CN110563128A - MBBR (moving bed biofilm reactor) sewage treatment filler and using method thereof - Google Patents
MBBR (moving bed biofilm reactor) sewage treatment filler and using method thereof Download PDFInfo
- Publication number
- CN110563128A CN110563128A CN201910829291.8A CN201910829291A CN110563128A CN 110563128 A CN110563128 A CN 110563128A CN 201910829291 A CN201910829291 A CN 201910829291A CN 110563128 A CN110563128 A CN 110563128A
- Authority
- CN
- China
- Prior art keywords
- filler
- reactor
- parts
- polyethylene
- sewage treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000945 filler Substances 0.000 title claims abstract description 135
- 239000010865 sewage Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims description 28
- -1 polyethylene Polymers 0.000 claims abstract description 97
- 238000005273 aeration Methods 0.000 claims abstract description 79
- 239000004698 Polyethylene Substances 0.000 claims abstract description 74
- 229920000573 polyethylene Polymers 0.000 claims abstract description 54
- 239000004743 Polypropylene Substances 0.000 claims abstract description 48
- 229920001155 polypropylene Polymers 0.000 claims abstract description 43
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 18
- 108010010803 Gelatin Proteins 0.000 claims abstract description 15
- 229920002472 Starch Polymers 0.000 claims abstract description 15
- 229920000159 gelatin Polymers 0.000 claims abstract description 15
- 239000008273 gelatin Substances 0.000 claims abstract description 15
- 235000019322 gelatine Nutrition 0.000 claims abstract description 15
- 235000011852 gelatine desserts Nutrition 0.000 claims abstract description 15
- 239000008107 starch Substances 0.000 claims abstract description 15
- 235000019698 starch Nutrition 0.000 claims abstract description 15
- 229920005830 Polyurethane Foam Polymers 0.000 claims abstract description 11
- 239000011496 polyurethane foam Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000009826 distribution Methods 0.000 claims abstract description 9
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 claims abstract 15
- 238000002156 mixing Methods 0.000 claims description 53
- 238000004132 cross linking Methods 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000004709 Chlorinated polyethylene Substances 0.000 claims description 15
- 239000012752 auxiliary agent Substances 0.000 claims description 15
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 15
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 15
- 229920002681 hypalon Polymers 0.000 claims description 15
- 239000003607 modifier Substances 0.000 claims description 15
- 239000000049 pigment Substances 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 12
- 229920001971 elastomer Polymers 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 9
- 239000000969 carrier Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 5
- 238000013019 agitation Methods 0.000 claims description 5
- 229910010293 ceramic material Inorganic materials 0.000 claims description 5
- 239000000460 chlorine Substances 0.000 claims description 5
- 229910052801 chlorine Inorganic materials 0.000 claims description 5
- 239000000806 elastomer Substances 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000005243 fluidization Methods 0.000 claims description 5
- 229920001903 high density polyethylene Polymers 0.000 claims description 5
- 239000004700 high-density polyethylene Substances 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 5
- 229920001684 low density polyethylene Polymers 0.000 claims description 5
- 239000004702 low-density polyethylene Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 5
- 150000002978 peroxides Chemical class 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 5
- 229910000077 silane Inorganic materials 0.000 claims description 5
- 239000011800 void material Substances 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 238000004065 wastewater treatment Methods 0.000 claims 1
- 239000010802 sludge Substances 0.000 abstract description 11
- 230000008901 benefit Effects 0.000 abstract description 7
- 244000005700 microbiome Species 0.000 abstract description 5
- 239000000654 additive Substances 0.000 abstract description 4
- 230000000975 bioactive effect Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000009827 uniform distribution Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/10—Packings; Fillings; Grids
- C02F3/105—Characterized by the chemical composition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
the invention discloses a filler for MBBR sewage treatment, which comprises the following raw materials in parts by weight: 50-70 parts of polyethylene, 30-50 parts of polypropylene, 10-20 parts of polyurethane foam, 20-30 parts of modified polyethylene, 5-10 parts of modified polypropylene, 5-10 parts of activated carbon, 7-8 parts of starch and 3-5 parts of gelatin. According to the invention, the prepared filler can promote the growth and propagation of microorganisms by adding activated carbon, starch and gelatin materials as bioactive additives in the filler raw materials, the filler grid plate is made of a material with low smooth adsorbability, the blockage of the filler on the grid can be effectively reduced, the adhesion rate of sludge is reduced, the normal operation of the filler and the sludge on the whole domestic sewage treatment system is effectively prevented, the arrangement of an air inlet pipeline is improved and the distribution of aeration heads in the tank is optimized by calculating the hydraulic characteristics of the tank type, so that the air inlet distribution at four sides and four corners of the tank is uniform, the energy consumption is reduced, and the economic benefit of MBBR sewage treatment is improved.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a filler for MBBR sewage treatment, and also relates to a using method of the filler for MBBR sewage treatment.
Background
the MBBR process principle is to apply the basic principle of the biofilm method, fully utilize the advantages of the activated sludge method and overcome the defects of the traditional activated sludge method and the fixed biofilm method. According to the method, a certain amount of suspension carriers are added into the reactor, so that the biomass and the biological species in the reactor are improved, and the treatment efficiency of the reactor is improved. As the density of the filler is close to that of water, the filler is completely mixed with the water during aeration, and the environment for the growth of microorganisms is three phases of gas, liquid and solid. The collision and shearing action of the carrier in water makes air bubbles finer, and the utilization rate of oxygen is increased. In addition, each carrier has different biological species inside and outside, anaerobic bacteria or facultative bacteria grow inside, aerobic bacteria grow outside, each carrier is a micro-reactor, and nitrification reaction and denitrification reaction exist at the same time, so that the treatment effect is improved.
the existing filler for MBBR sewage treatment generally adopts polyethylene, polypropylene or a modified structure, so that the prepared filler has no promotion effect on the growth and reproduction of organisms, the biological characteristics of a carrier are reduced, the filler and sludge in the MBBR sewage treatment easily block a grid plate, and the economic benefit of the MBBR sewage treatment is reduced due to factors such as unreasonable installation of an aeration head and the like.
disclosure of Invention
the invention aims to provide a filler for MBBR sewage treatment and a using method thereof, wherein activated carbon, starch and gelatin materials are added in the raw materials of the filler as bioactive additives, so that the prepared filler can promote the growth and reproduction of microorganisms, a filler grid plate is made of a material with small smoothness and adsorbability, the blockage of the filler on a grid can be effectively reduced, the attachment rate of sludge is reduced, the normal operation of the filler and the sludge on the whole domestic sewage treatment system is effectively prevented, the energy consumption is reduced, the economic benefit of the MBBR sewage treatment is improved, and the problems in the background art are solved.
in order to achieve the purpose, the invention provides the following technical scheme: the filler for MBBR sewage treatment comprises the following raw materials in parts by mass: 50-70 parts of polyethylene, 30-50 parts of polypropylene, 10-20 parts of polyurethane foam, 20-30 parts of modified polyethylene, 5-10 parts of modified polypropylene, 5-10 parts of activated carbon, 7-8 parts of starch and 3-5 parts of gelatin.
Preferably, the modified polyethylene comprises chlorinated polyethylene, chlorosulfonated polyethylene, crosslinked polyethylene and blended modified polyethylene, and the mixing ratio of the chlorinated polyethylene, the chlorosulfonated polyethylene, the crosslinked polyethylene and the blended modified polyethylene is 2: 1: 2: 1.
preferably, the chlorinated polyethylene contains chlorine content higher than 40%; the chlorosulfonated polyethylene is prepared by chlorinating and chlorosulfonating polyethylene by a phase suspension method; the crosslinked polyethylene is a high molecular polymer prepared by any one of silane crosslinking, high-energy radiation crosslinking, peroxide crosslinking and ultraviolet irradiation crosslinking; the blending modified polyethylene is any one of a HDPE/LDPE blending system, a PE/EVA blending system, a PE/elastomer blending system, a PE/PP/POE blending system and a PE/PS/SBS blending system.
preferably, the modified polyethylene is a modified polypropylene material obtained by mixing polypropylene resin, a modifier, an auxiliary agent, a filler and a pigment component and extruding and granulating the mixture in a screw extruder.
Preferably, the polypropylene resin, the modifier, the auxiliary agent, the filler and the pigment are mixed by the following mass percentages: 50-60% of polypropylene resin, 10-20% of modifier, 5-10% of auxiliary agent, 10-20% of filler and 1-3% of pigment.
Preferably, the polyethylene, the polypropylene, the polyurethane foam, the modified polyethylene, the modified polypropylene, the activated carbon, the starch and the gelatin are uniformly mixed according to parts by weight, extruded by a screw extruder and subjected to injection molding to prepare the MBBR sewage treatment filler.
preferably, the filler for MBBR sewage treatment is cylindrical granular substance, and the carrier size of the filler for MBBR sewage treatment is 12 x 8 mm.
The invention also provides a using method of the filler for MBBR sewage treatment, which comprises the following steps:
S1: manufacturing a filler grid plate, connecting and splicing grid bars into grid blocks in groups, and then installing the grid blocks on a supporting surface in a block mode, wherein the width of each block is smaller than the diameter of a manhole so that the grid blocks can be fed into a tower from the manhole, and the grid bars need to be designed in a segmented mode when the diameter of the tower is larger;
S2: selecting a material with small smooth adsorbability, and enlarging the gap on the premise of ensuring that the filler can be trapped, so that the filler is not easily attached by suspended substances;
s3: growing the biological film in a filler carrier, wherein the carrier freely moves along with water flow in a reactor;
s4: in an aerobic reactor, the carriers are pushed to move by aeration; moving the carrier in the anaerobic reactor by mechanical agitation;
s5: the filler grating plate is arranged at the outlet of the reactor and used for filtering the filler to prevent the loss of the filler in the reactor;
s6: the reactor in cuboid shape is divided into 2-4 grids along the length direction of the pool by partition boards, the water flow is in plug flow state in the reactor, and the water flow is in complete mixing state in each grid under the action of aeration fluidization;
S7: perforating one side of the reactor, aerating the perforated aeration pipe at one side to make the filler circularly flow in the tank, and arranging a microporous aeration head at the bottom of the reactor with a cylindrical structure;
S8: the bottom of the reactor is additionally provided with a stirring device, so that the reactor is conveniently and flexibly applied to an anoxic state for use;
S9: in order to prevent the air stripping effect and the volatilization effect brought by aeration, a cover is added above the reactor for use.
preferably, the filler grid plate manufactured in step S1 is composed of two or sixteen grid-type support plates, and the void ratio is 90-95%.
Preferably, the step S1 selects a grid plate made of a ceramic material, and the spacing between the grid plates is in the range of 3-10 cm.
preferably, the DO concentration in the aerobic reactor in the step S4 is not lower than 2mg/L, the pH value is 6.5-7.5, and the liquid temperature in the aerobic reactor is 20-30 ℃.
preferably, the volume load of the anaerobic reactor in the step S4 reaches 10-18kgCODM3.d, the height-diameter ratio of the reactor is 4-8, and the height of the reactor is not lower than 20 m.
preferably, in the step S5, the number of the layers of the packing grid plates at the outlet position of the reactor is not less than two, and the connecting position of the adjacent packing grid plates is provided with a sealing structure for sealing the connecting position.
preferably, when the aeration heads are designed in step S7, the arrangement of the air inlet pipelines is improved and the distribution of the aeration heads in the tank is optimized by calculating the hydraulic characteristics of the tank model, and then the tightness of the nuts fastening the rubber pads on each aeration head is adjusted according to the actual aeration conditions, so as to adjust the aeration amount of each aeration head, and perforated aeration pipes can be used, so that the air inlets on four sides and four corners of the tank are uniformly distributed.
preferably, the stirring device used in step S8 is a CBY21 type paddle-to-side stirring device, and the horizontal deflection angle of the stirring device is 15 to 20 °, and the downward deflection angle is 1 to 5 °.
Compared with the prior art, the invention has the beneficial effects that: the invention strictly controls the filler for MBBR sewage treatment and the using method thereof, the formula and the preparation process parameters of the filler for MBBR sewage treatment are strictly controlled, active carbon, starch and gelatin materials are added in the raw materials of the filler as bioactive additives, so that the prepared filler can promote the growth and the reproduction of microorganisms, the filler grid plate adopts a material with small smooth adsorbability, the blockage of the filler on a grid can be effectively reduced, the attachment rate of sludge is reduced, the normal operation of the filler and the sludge on the whole domestic sewage treatment system is effectively prevented, the arrangement of an air inlet pipeline and the distribution of aeration heads in a pond are improved by the design of the aeration heads through the calculation of hydraulic characteristics of the pond shape, the degree of nuts of rubber pads fixed on each aeration head is adjusted according to the actual aeration condition, the aeration quantity of a single aeration head is adjusted, and perforated aeration pipes can be adopted, the four sides and four corners of the pool are convenient to be uniformly distributed, the energy consumption can be reduced, and the economic benefit of MBBR sewage treatment is improved.
Detailed Description
in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a filler for MBBR sewage treatment, which comprises the following specific examples in parts by weight:
example 1
the filler for MBBR sewage treatment comprises the following raw materials in parts by mass: 50 parts of polyethylene, 30 parts of polypropylene, 10 parts of polyurethane foam, 20 parts of modified polyethylene, 5 parts of modified polypropylene, 5 parts of activated carbon, 7 parts of starch and 3 parts of gelatin, wherein the modified polyethylene comprises chlorinated polyethylene, chlorosulfonated polyethylene, crosslinked polyethylene and blending modified polyethylene, and the mixing ratio of the chlorinated polyethylene, the chlorosulfonated polyethylene, the crosslinked polyethylene and the blending modified polyethylene is 2: 1: 2: 1, the chlorine content of the chlorinated polyethylene is higher than 40%; the chlorosulfonated polyethylene is prepared by chlorinating and chlorosulfonating polyethylene by a phase suspension method; the crosslinked polyethylene is a high molecular polymer prepared by any one of silane crosslinking, high-energy radiation crosslinking, peroxide crosslinking and ultraviolet irradiation crosslinking; the blending modified polyethylene is any one of a HDPE/LDPE blending system, a PE/EVA blending system, a PE/elastomer blending system, a PE/PP/POE blending system and a PE/PS/SBS blending system, the modified polyethylene is a modified polypropylene material obtained by mixing polypropylene resin, a modifier, an auxiliary agent, a filler and a pigment and extruding and granulating in a screw extruder, and the mixing mass percentages of the polypropylene resin, the modifier, the auxiliary agent, the filler and the pigment are respectively as follows: 60% of polypropylene resin, 15% of a modifier, 9% of an auxiliary agent, 15% of a filler and 1% of a pigment, wherein the polyethylene, the polypropylene, the polyurethane foam, the modified polyethylene, the modified polypropylene, the activated carbon, the starch and the gelatin are uniformly mixed in parts by mass, extruded by a screw extruder and subjected to injection molding to prepare the MBBR sewage treatment filler, the MBBR sewage treatment filler is cylindrical granular matter, and the size of a carrier of the MBBR sewage treatment filler is 12 x 8 mm.
in the filler for MBBR sewage treatment provided by the invention, the data of the modified polyethylene according to the specific embodiment in percentage by mass are shown in the following table 2:
The invention also provides a using method of the filler for MBBR sewage treatment, which comprises the following steps:
S1: manufacturing a filler grid plate, connecting and splicing grid bars into grid blocks in groups, and then installing the grid blocks on a supporting surface in a block mode, wherein the width of each block is smaller than the diameter of a manhole so that the grid blocks can be fed into a tower from the manhole, and the grid bars need to be designed in a segmented mode when the diameter of the tower is larger;
s2: selecting a material with small smooth adsorbability, and enlarging the gap on the premise of ensuring that the filler can be trapped, so that the filler is not easily attached by suspended substances;
s3: growing the biological film in a filler carrier, wherein the carrier freely moves along with water flow in a reactor;
S4: in an aerobic reactor, the carriers are pushed to move by aeration; moving the carrier in the anaerobic reactor by mechanical agitation;
s5: the filler grating plate is arranged at the outlet of the reactor and used for filtering the filler to prevent the loss of the filler in the reactor;
S6: the reactor in a cuboid shape is evenly divided into 2 grids along the length direction of the pool by using partition plates, the water flow is in a plug flow state in the reactor, and the water flow is in a complete mixing state in each grid under the action of aeration fluidization;
S7: perforating one side of the reactor, aerating the perforated aeration pipe at one side to make the filler circularly flow in the tank, and arranging a microporous aeration head at the bottom of the reactor with a cylindrical structure;
S8: the bottom of the reactor is additionally provided with a stirring device, so that the reactor is conveniently and flexibly applied to an anoxic state for use;
s9: in order to prevent the air stripping effect and the volatilization effect brought by aeration, a cover is added above the reactor for use.
The filler grid plate manufactured in the step S1 is composed of two sections and sixteen grid type support plates, the void ratio is 90%, the grid plate made of ceramic materials is selected in the step S1, the distance between the grid plates is 3cm, the DO concentration in the aerobic reactor in the step S4 is not lower than 2mg/L, the pH value is 6.5, the temperature of liquid in the aerobic reactor is 20 ℃, the volume load of the anaerobic reactor in the step S4 reaches 10kgCODM3.d, the height-diameter ratio of the reactor is 4, the height of the reactor is not lower than 20m, the number of layers of the filler grid plate at the outlet position of the reactor in the step S5 is not lower than two layers, a sealing structure is arranged at the connecting position of the adjacent filler grid plates for packaging the connecting position, when the aeration head in the step S7 is designed, the arrangement of an air inlet pipeline is improved and the distribution of the aeration heads in the pool is optimized through the calculation of the pool type as hydraulic characteristic, and adjusting the tightness degree of nuts for fastening rubber pads on the aeration heads according to actual aeration conditions, adjusting the aeration amount of a single aeration head, and adopting perforated aeration pipes to facilitate uniform distribution of air intake at four sides and four corners of the tank, wherein the stirring device adopted in the step S8 is a CBY21 type paddle opposite-side-extending stirring device, and the horizontal deflection angle of the stirring device is 15 degrees and the downward deflection angle is 1 degree.
Example 2
The filler for MBBR sewage treatment comprises the following raw materials in parts by mass: 60 parts of polyethylene, 40 parts of polypropylene, 15 parts of polyurethane foam, 25 parts of modified polyethylene, 7.5 parts of modified polypropylene, 7.5 parts of activated carbon, 7.5 parts of starch and 4 parts of gelatin, wherein the modified polyethylene comprises chlorinated polyethylene, chlorosulfonated polyethylene, crosslinked polyethylene and blending modified polyethylene, and the mixing ratio of the chlorinated polyethylene, the chlorosulfonated polyethylene, the crosslinked polyethylene and the blending modified polyethylene is 2: 1: 2: 1, the chlorine content of the chlorinated polyethylene is higher than 40%; the chlorosulfonated polyethylene is prepared by chlorinating and chlorosulfonating polyethylene by a phase suspension method; the crosslinked polyethylene is a high molecular polymer prepared by any one of silane crosslinking, high-energy radiation crosslinking, peroxide crosslinking and ultraviolet irradiation crosslinking; the blending modified polyethylene is any one of a HDPE/LDPE blending system, a PE/EVA blending system, a PE/elastomer blending system, a PE/PP/POE blending system and a PE/PS/SBS blending system, the modified polyethylene is a modified polypropylene material obtained by mixing polypropylene resin, a modifier, an auxiliary agent, a filler and a pigment and extruding and granulating in a screw extruder, and the mixing mass percentages of the polypropylene resin, the modifier, the auxiliary agent, the filler and the pigment are respectively as follows: 50% of polypropylene resin, 20% of a modifier, 7% of an auxiliary agent, 20% of a filler and 3% of a pigment, wherein the polyethylene, the polypropylene, the polyurethane foam, the modified polyethylene, the modified polypropylene, the activated carbon, the starch and the gelatin are uniformly mixed in parts by mass, extruded by a screw extruder and subjected to injection molding to prepare the MBBR sewage treatment filler, the MBBR sewage treatment filler is cylindrical granular substance, and the size of a carrier of the MBBR sewage treatment filler is 12 x 8 mm.
The invention also provides a using method of the filler for MBBR sewage treatment, which comprises the following steps:
S1: manufacturing a filler grid plate, connecting and splicing grid bars into grid blocks in groups, and then installing the grid blocks on a supporting surface in a block mode, wherein the width of each block is smaller than the diameter of a manhole so that the grid blocks can be fed into a tower from the manhole, and the grid bars need to be designed in a segmented mode when the diameter of the tower is larger;
S2: selecting a material with small smooth adsorbability, and enlarging the gap on the premise of ensuring that the filler can be trapped, so that the filler is not easily attached by suspended substances;
S3: growing the biological film in a filler carrier, wherein the carrier freely moves along with water flow in a reactor;
s4: in an aerobic reactor, the carriers are pushed to move by aeration; moving the carrier in the anaerobic reactor by mechanical agitation;
s5: the filler grating plate is arranged at the outlet of the reactor and used for filtering the filler to prevent the loss of the filler in the reactor;
S6: the reactor in cuboid shape is divided into 3 grids along the length direction of the pool by partition boards, the water flow is in plug flow state in the reactor, and in each grid, the water flow is in complete mixing state under the action of aeration fluidization;
s7: perforating one side of the reactor, aerating the perforated aeration pipe at one side to make the filler circularly flow in the tank, and arranging a microporous aeration head at the bottom of the reactor with a cylindrical structure;
S8: the bottom of the reactor is additionally provided with a stirring device, so that the reactor is conveniently and flexibly applied to an anoxic state for use;
s9: in order to prevent the air stripping effect and the volatilization effect brought by aeration, a cover is added above the reactor for use.
The filler grid plate manufactured in the step S1 is composed of two sections and sixteen grid type support plates, the void ratio is 92.5%, the grid plate made of a ceramic material is selected in the step S1, the spacing range of the grid plates is 6.5cm, the DO concentration in the aerobic reactor in the step S4 is not lower than 2mg/L, the pH value is 7.0, the liquid temperature in the aerobic reactor is 25 ℃, the volume load of the anaerobic reactor in the step S4 reaches 14 kgcoc 3 dm3 d, the height-diameter ratio of the reactor is 6, the height of the reactor is not lower than 20m, the number of layers of the filler grid plates at the outlet position of the reactor in the step S5 is not lower than two, a sealing structure is arranged at the connecting position of the adjacent filler grid plates for packaging the connecting position, when the aeration head in the step S7 is designed, the arrangement of aeration heads in the pool is improved and the distribution of the aeration heads in the pool is optimized by using the pool type as a hydraulic characteristic calculation, and adjusting the tightness degree of nuts for fastening rubber pads on the aeration heads according to actual aeration conditions, adjusting the aeration amount of a single aeration head, and adopting perforated aeration pipes to facilitate uniform distribution of air intake at four sides and four corners of the tank, wherein the stirring device adopted in the step S8 is a CBY21 type paddle opposite-side-extending stirring device, and the horizontal deflection angle of the stirring device is 17.5 degrees and the downward deflection angle is 3 degrees.
example 3
the filler for MBBR sewage treatment comprises the following raw materials in parts by mass: 70 parts of polyethylene, 50 parts of polypropylene, 20 parts of polyurethane foam, 30 parts of modified polyethylene, 10 parts of modified polypropylene, 10 parts of activated carbon, 8 parts of starch and 5 parts of gelatin, wherein the modified polyethylene comprises chlorinated polyethylene, chlorosulfonated polyethylene, crosslinked polyethylene and blending modified polyethylene, and the mixing ratio of the chlorinated polyethylene, the chlorosulfonated polyethylene, the crosslinked polyethylene and the blending modified polyethylene is 2: 1: 2: 1, the chlorine content of the chlorinated polyethylene is higher than 40%; the chlorosulfonated polyethylene is prepared by chlorinating and chlorosulfonating polyethylene by a phase suspension method; the crosslinked polyethylene is a high molecular polymer prepared by any one of silane crosslinking, high-energy radiation crosslinking, peroxide crosslinking and ultraviolet irradiation crosslinking; the blending modified polyethylene is any one of a HDPE/LDPE blending system, a PE/EVA blending system, a PE/elastomer blending system, a PE/PP/POE blending system and a PE/PS/SBS blending system, the modified polyethylene is a modified polypropylene material obtained by mixing polypropylene resin, a modifier, an auxiliary agent, a filler and a pigment and extruding and granulating in a screw extruder, and the mixing mass percentages of the polypropylene resin, the modifier, the auxiliary agent, the filler and the pigment are respectively as follows: 55% of polypropylene resin, 15% of a modifier, 10% of an auxiliary agent, 19% of a filler and 1% of a pigment, wherein the polyethylene, the polypropylene, the polyurethane foam, the modified polyethylene, the modified polypropylene, the activated carbon, the starch and the gelatin are uniformly mixed in parts by mass, extruded by a screw extruder and subjected to injection molding to prepare the MBBR sewage treatment filler, the MBBR sewage treatment filler is cylindrical granular substance, and the size of a carrier of the MBBR sewage treatment filler is 12 x 8 mm.
The invention also provides a using method of the filler for MBBR sewage treatment, which comprises the following steps:
S1: manufacturing a filler grid plate, connecting and splicing grid bars into grid blocks in groups, and then installing the grid blocks on a supporting surface in a block mode, wherein the width of each block is smaller than the diameter of a manhole so that the grid blocks can be fed into a tower from the manhole, and the grid bars need to be designed in a segmented mode when the diameter of the tower is larger;
S2: selecting a material with small smooth adsorbability, and enlarging the gap on the premise of ensuring that the filler can be trapped, so that the filler is not easily attached by suspended substances;
S3: growing the biological film in a filler carrier, wherein the carrier freely moves along with water flow in a reactor;
S4: in an aerobic reactor, the carriers are pushed to move by aeration; moving the carrier in the anaerobic reactor by mechanical agitation;
s5: the filler grating plate is arranged at the outlet of the reactor and used for filtering the filler to prevent the loss of the filler in the reactor;
S6: the cuboid reactor is evenly divided into 4 grids along the length direction of the tank by using partition plates, the water flow is in a plug flow state in the reactor, and the water flow is in a completely mixed state in each grid under the action of aeration fluidization;
s7: perforating one side of the reactor, aerating the perforated aeration pipe at one side to make the filler circularly flow in the tank, and arranging a microporous aeration head at the bottom of the reactor with a cylindrical structure;
s8: the bottom of the reactor is additionally provided with a stirring device, so that the reactor is conveniently and flexibly applied to an anoxic state for use;
s9: in order to prevent the air stripping effect and the volatilization effect brought by aeration, a cover is added above the reactor for use.
The filler grid plate manufactured in the step S1 is composed of two sections and sixteen grid type support plates, the void ratio is 95%, the grid plate made of ceramic materials is selected in the step S1, the spacing range of the grid plates is 10cm, the DO concentration in the aerobic reactor in the step S4 is not lower than 2mg/L, the pH value is 7.5, the temperature of liquid in the aerobic reactor is 30 ℃, the volume load of the anaerobic reactor in the step S4 reaches 18kgCODM3.d, the height-diameter ratio of the reactor is 8, the height of the reactor is not lower than 20m, the number of layers of the filler grid plates at the outlet position of the reactor in the step S5 is not lower than two, a sealing structure is arranged at the connecting position of the adjacent filler grid plates for packaging the connecting position, when the aeration head is designed in the step S7, the arrangement of an air inlet pipeline is improved and the distribution of the aeration head in the aeration tank is optimized through the calculation of the hydraulic characteristic of the tank type, and adjusting the tightness degree of nuts for fastening rubber pads on the aeration heads according to actual aeration conditions, adjusting the aeration amount of a single aeration head, and adopting perforated aeration pipes to facilitate uniform distribution of air intake at four sides and four corners of the tank, wherein the stirring device adopted in the step S8 is a CBY21 type paddle opposite-side-extending stirring device, and the horizontal deflection angle of the stirring device is 20 degrees and the downward deflection angle is 5 degrees.
In summary, the following steps: the invention strictly controls the filler for MBBR sewage treatment and the using method thereof, the formula and the preparation process parameters of the filler for MBBR sewage treatment are strictly controlled, active carbon, starch and gelatin materials are added in the raw materials of the filler as bioactive additives, so that the prepared filler can promote the growth and the reproduction of microorganisms, the filler grid plate adopts a material with small smooth adsorbability, the blockage of the filler on a grid can be effectively reduced, the attachment rate of sludge is reduced, the normal operation of the filler and the sludge on the whole domestic sewage treatment system is effectively prevented, the arrangement of an air inlet pipeline and the distribution of aeration heads in a pond are improved by the design of the aeration heads through the calculation of hydraulic characteristics of the pond shape, the degree of nuts of rubber pads fixed on each aeration head is adjusted according to the actual aeration condition, the aeration quantity of a single aeration head is adjusted, and perforated aeration pipes can be adopted, the four sides and four corners of the pool are convenient to be uniformly distributed, the energy consumption can be reduced, and the economic benefit of MBBR sewage treatment is improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. the utility model provides a filler for MBBR sewage treatment which characterized in that: the raw materials are as follows according to the mass portion: 50-70 parts of polyethylene, 30-50 parts of polypropylene, 10-20 parts of polyurethane foam, 20-30 parts of modified polyethylene, 5-10 parts of modified polypropylene, 5-10 parts of activated carbon, 7-8 parts of starch and 3-5 parts of gelatin.
2. The filler for MBBR sewage treatment according to claim 1, wherein: the modified polyethylene comprises chlorinated polyethylene, chlorosulfonated polyethylene, cross-linked polyethylene and blended modified polyethylene, wherein the mixing ratio of the chlorinated polyethylene, the chlorosulfonated polyethylene, the cross-linked polyethylene and the blended modified polyethylene is 2: 1: 2: 1;
the chlorinated polyethylene has a chlorine content higher than 40%; the chlorosulfonated polyethylene is prepared by chlorinating and chlorosulfonating polyethylene by a phase suspension method; the crosslinked polyethylene is a high molecular polymer prepared by any one of silane crosslinking, high-energy radiation crosslinking, peroxide crosslinking and ultraviolet irradiation crosslinking; the blending modified polyethylene is any one of a HDPE/LDPE blending system, a PE/EVA blending system, a PE/elastomer blending system, a PE/PP/POE blending system and a PE/PS/SBS blending system.
3. The filler for MBBR sewage treatment according to claim 1, wherein: the modified polyethylene is a modified polypropylene material obtained by mixing polypropylene resin, a modifier, an auxiliary agent, a filler and a pigment component and extruding and granulating in a screw extruder;
The polypropylene resin, the modifier, the auxiliary agent, the filler and the pigment are mixed according to the following mass percentage: 50-60% of polypropylene resin, 10-20% of modifier, 5-10% of auxiliary agent, 10-20% of filler and 1-3% of pigment.
4. the filler for MBBR sewage treatment according to claim 1, wherein: the polyethylene, the polypropylene, the polyurethane foam, the modified polyethylene, the modified polypropylene, the activated carbon, the starch and the gelatin are uniformly mixed according to parts by mass, extruded by a screw extruder and subjected to injection molding to prepare the MBBR sewage treatment filler;
the filler for MBBR sewage treatment is cylindrical granular substance, and the size of the carrier of the filler for MBBR sewage treatment is 12 x 8 mm.
5. A method of using the MBBR wastewater treatment packing of claim 1, characterized in that: the method comprises the following steps:
s1: manufacturing a filler grid plate, connecting and splicing grid bars into grid blocks in groups, and then installing the grid blocks on a supporting surface in a block mode, wherein the width of each block is smaller than the diameter of a manhole so that the grid blocks can be fed into a tower from the manhole, and the grid bars need to be designed in a segmented mode when the diameter of the tower is larger;
s2: selecting a material with small smooth adsorbability, and enlarging the gap on the premise of ensuring that the filler can be trapped, so that the filler is not easily attached by suspended substances;
S3: growing the biological film in a filler carrier, wherein the carrier freely moves along with water flow in a reactor;
S4: in an aerobic reactor, the carriers are pushed to move by aeration; moving the carrier in the anaerobic reactor by mechanical agitation;
S5: the filler grating plate is arranged at the outlet of the reactor and used for filtering the filler to prevent the loss of the filler in the reactor;
S6: the reactor in cuboid shape is divided into 2-4 grids along the length direction of the pool by partition boards, the water flow is in plug flow state in the reactor, and the water flow is in complete mixing state in each grid under the action of aeration fluidization;
S7: perforating one side of the reactor, aerating the perforated aeration pipe at one side to make the filler circularly flow in the tank, and arranging a microporous aeration head at the bottom of the reactor with a cylindrical structure;
S8: the bottom of the reactor is additionally provided with a stirring device, so that the reactor is conveniently and flexibly applied to an anoxic state for use;
S9: in order to prevent the air stripping effect and the volatilization effect brought by aeration, a cover is added above the reactor for use.
6. The use method of the filler for MBBR sewage treatment according to claim 5, which is characterized in that: the filler grid plate manufactured in the step S1 consists of two sections and sixteen grid type support plates, and the void ratio is 90-95%;
in the step S1, grid plates made of ceramic material are selected, and the spacing between the grid plates is in the range of 3-10 cm.
7. the use method of the filler for MBBR sewage treatment according to claim 5, which is characterized in that: in the step S4, the DO concentration in the aerobic reactor is not lower than 2mg/L, the pH value is 6.5-7.5, and the liquid temperature in the aerobic reactor is 20-30 ℃;
in the step S4, the volume load of the anaerobic reactor reaches 10-18kgCODm3.d, the height-diameter ratio of the reactor is 4-8, and the height of the reactor is not lower than 20 m.
8. the use method of the filler for MBBR sewage treatment according to claim 5, which is characterized in that: the number of layers of the packing grid plates at the outlet position of the reactor in the step S5 is not less than two, and a sealing structure is arranged at the connecting position of the adjacent packing grid plates for packaging the connecting position.
9. the use method of the filler for MBBR sewage treatment according to claim 5, which is characterized in that: when the aeration heads are designed in the step S7, the arrangement of air inlet pipelines is improved and the distribution of the aeration heads in the tank is optimized by calculating the hydraulic characteristics of the tank type, the tightness degree of nuts for fastening rubber pads on each aeration head is adjusted according to the actual aeration condition, the aeration amount of a single aeration head is adjusted, and perforated aeration pipes can be adopted, so that the air inlets on the four sides and the four corners of the tank are uniformly distributed.
10. the use method of the filler for MBBR sewage treatment according to claim 5, which is characterized in that: the stirring device adopted in the step S8 is a CBY21 type paddle opposite side stretching type stirring device, the horizontal deflection angle of the stirring device is 15-20 degrees, and the downward deflection angle is 1-5 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910829291.8A CN110563128A (en) | 2019-09-03 | 2019-09-03 | MBBR (moving bed biofilm reactor) sewage treatment filler and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910829291.8A CN110563128A (en) | 2019-09-03 | 2019-09-03 | MBBR (moving bed biofilm reactor) sewage treatment filler and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110563128A true CN110563128A (en) | 2019-12-13 |
Family
ID=68777641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910829291.8A Pending CN110563128A (en) | 2019-09-03 | 2019-09-03 | MBBR (moving bed biofilm reactor) sewage treatment filler and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110563128A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114536584A (en) * | 2022-01-28 | 2022-05-27 | 青岛思普润水处理股份有限公司 | Moving bed biofilm suspension carrier for sewage treatment and preparation method thereof |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000319457A (en) * | 1999-05-13 | 2000-11-21 | Sanwa Kako Co Ltd | Starch-filled crosslinked polyolefin open-cell foam and its production |
| CN1522972A (en) * | 2003-09-03 | 2004-08-25 | 华南理工大学 | Preparation method of bio-affinity hydrophilic active magnetic seed filler for water treatment |
| CN2647848Y (en) * | 2003-10-23 | 2004-10-13 | 武汉安全环保研究院 | Pillar shap suspension filler |
| CN100999361A (en) * | 2007-01-05 | 2007-07-18 | 华南理工大学 | Nutrition slow-release type biofiller for water treatment and its preparation method |
| CN101113052A (en) * | 2007-07-13 | 2008-01-30 | 哈尔滨工业大学 | Modified suspension filler |
| KR100800550B1 (en) * | 2007-02-23 | 2008-02-04 | 주식회사 포스코건설 | Effluent treatment method of sewage treatment process using fluidized media |
| KR100820581B1 (en) * | 2007-02-28 | 2008-04-08 | (주)이엔바이오21 | Floating media with improved microbial adhesion and filtration |
| US20110210066A1 (en) * | 2009-02-27 | 2011-09-01 | Keisuke Takenouchi | Waste fluid treatment using filamentous fungus or actinomycete |
| CN103058362A (en) * | 2013-01-08 | 2013-04-24 | 中国环境科学研究院 | Suspension filler for water treatment |
| CN105461083A (en) * | 2016-01-27 | 2016-04-06 | 苏州科环环保科技有限公司 | Suspended filler for quick biofilm culturing of microorganisms |
| CN105621594A (en) * | 2016-01-27 | 2016-06-01 | 苏州科环环保科技有限公司 | Modified MBBR (moving bed biofilm reactor) suspended biological filler and preparation method thereof |
| CN107758847A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | High biofilm amount MBBR suspended biological fillers and preparation method thereof |
| CN109019843A (en) * | 2018-08-14 | 2018-12-18 | 江苏裕隆环保有限公司 | A kind of floating stuffing and preparation method thereof for biological wastewater treatment |
| CN109704457A (en) * | 2019-02-25 | 2019-05-03 | 常功法 | A kind of fluidisation bed fillers and preparation method thereof with strengthened denitrification function |
-
2019
- 2019-09-03 CN CN201910829291.8A patent/CN110563128A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000319457A (en) * | 1999-05-13 | 2000-11-21 | Sanwa Kako Co Ltd | Starch-filled crosslinked polyolefin open-cell foam and its production |
| CN1522972A (en) * | 2003-09-03 | 2004-08-25 | 华南理工大学 | Preparation method of bio-affinity hydrophilic active magnetic seed filler for water treatment |
| CN2647848Y (en) * | 2003-10-23 | 2004-10-13 | 武汉安全环保研究院 | Pillar shap suspension filler |
| CN100999361A (en) * | 2007-01-05 | 2007-07-18 | 华南理工大学 | Nutrition slow-release type biofiller for water treatment and its preparation method |
| KR100800550B1 (en) * | 2007-02-23 | 2008-02-04 | 주식회사 포스코건설 | Effluent treatment method of sewage treatment process using fluidized media |
| KR100820581B1 (en) * | 2007-02-28 | 2008-04-08 | (주)이엔바이오21 | Floating media with improved microbial adhesion and filtration |
| CN101113052A (en) * | 2007-07-13 | 2008-01-30 | 哈尔滨工业大学 | Modified suspension filler |
| US20110210066A1 (en) * | 2009-02-27 | 2011-09-01 | Keisuke Takenouchi | Waste fluid treatment using filamentous fungus or actinomycete |
| CN103058362A (en) * | 2013-01-08 | 2013-04-24 | 中国环境科学研究院 | Suspension filler for water treatment |
| CN105461083A (en) * | 2016-01-27 | 2016-04-06 | 苏州科环环保科技有限公司 | Suspended filler for quick biofilm culturing of microorganisms |
| CN105621594A (en) * | 2016-01-27 | 2016-06-01 | 苏州科环环保科技有限公司 | Modified MBBR (moving bed biofilm reactor) suspended biological filler and preparation method thereof |
| CN107758847A (en) * | 2016-08-17 | 2018-03-06 | 苏州科环环保科技有限公司 | High biofilm amount MBBR suspended biological fillers and preparation method thereof |
| CN109019843A (en) * | 2018-08-14 | 2018-12-18 | 江苏裕隆环保有限公司 | A kind of floating stuffing and preparation method thereof for biological wastewater treatment |
| CN109704457A (en) * | 2019-02-25 | 2019-05-03 | 常功法 | A kind of fluidisation bed fillers and preparation method thereof with strengthened denitrification function |
Non-Patent Citations (2)
| Title |
|---|
| 万田英等: "MBBR工艺及其运行中易出现问题的探讨", 《电力环境保护》 * |
| 赵江冰等: "移动床生物膜反应器技术研究现状与进展", 《环境科学与技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114536584A (en) * | 2022-01-28 | 2022-05-27 | 青岛思普润水处理股份有限公司 | Moving bed biofilm suspension carrier for sewage treatment and preparation method thereof |
| CN114536584B (en) * | 2022-01-28 | 2023-08-22 | 青岛思普润水处理股份有限公司 | Moving bed biomembrane suspension carrier for sewage treatment and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110776099B (en) | Self-circulation efficient biological denitrification device and working method thereof | |
| CN212450817U (en) | Moving bed biofilm reaction system and application thereof | |
| CN102452768A (en) | Denitrifying phosphorus removal-anammox-shortcut nitrification integrated baffled reaction equipment | |
| CN103172172B (en) | Up-flow solid carbon source biofilm carrier denitrification bioreactor | |
| CN103588349B (en) | A kind for the treatment of process of terephthalic acid wastewater | |
| CN104512960B (en) | Integrated device and wastewater treatment method for wastewater biological treatment | |
| CN102659282A (en) | A Simultaneous Denitrification and Phosphorus Sewage Treatment Device Using Immobilized Microbial CASS | |
| Ibrahim et al. | Improvements in biofilm processes for wastewater treatment | |
| CN106115926A (en) | A kind of wavy subsurface-flow constructed wetland of multi-medium-layer | |
| CN102424472A (en) | Anaerobic biological filter | |
| CN104787975A (en) | Compound ecologic water treatment system operating in low-temperature season | |
| CN110563128A (en) | MBBR (moving bed biofilm reactor) sewage treatment filler and using method thereof | |
| CN102225322A (en) | Reactor with interval filling bed | |
| CN109020045A (en) | A kind of integration distributing rural domestic sewage treating device | |
| CN104176879A (en) | Sewage treatment method used in glutinous rice flour processing | |
| CN105884152A (en) | IFBR-UASB-A/OBR chemical wastewater treatment combined process | |
| CN113912178A (en) | Baffling type MBBR biochemical system of flexible suspension filler | |
| CN210505759U (en) | Self-circulation efficient biological denitrification device | |
| CN105884151B (en) | Method for treating industrial wastewater by combined process | |
| CN202265458U (en) | Anaerobic biological filter | |
| CN105948411A (en) | Novel industrial wastewater treatment process | |
| CN114031181B (en) | Floating water treatment system | |
| CN217535571U (en) | UAD biological fluidized bed denitrification device based on sulfur autotrophy | |
| CN212356982U (en) | Sludge reduction treatment equipment | |
| CN213623484U (en) | Membrane type anaerobic and MBBR membrane type aerobic integrated sewage treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191213 |