CN117003440A - Sewage treatment process and integrated sludge treatment equipment - Google Patents
Sewage treatment process and integrated sludge treatment equipment Download PDFInfo
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- CN117003440A CN117003440A CN202311192215.3A CN202311192215A CN117003440A CN 117003440 A CN117003440 A CN 117003440A CN 202311192215 A CN202311192215 A CN 202311192215A CN 117003440 A CN117003440 A CN 117003440A
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- 239000010865 sewage Substances 0.000 title claims abstract description 136
- 239000010802 sludge Substances 0.000 title claims abstract description 115
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000004062 sedimentation Methods 0.000 claims abstract description 126
- 230000003750 conditioning effect Effects 0.000 claims abstract description 33
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 13
- 238000005516 engineering process Methods 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 95
- 238000004891 communication Methods 0.000 claims description 34
- 238000005192 partition Methods 0.000 claims description 25
- 230000001112 coagulating effect Effects 0.000 claims description 20
- 238000005189 flocculation Methods 0.000 claims description 17
- 230000016615 flocculation Effects 0.000 claims description 17
- 239000000945 filler Substances 0.000 claims description 16
- 238000003860 storage Methods 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 10
- 239000006228 supernatant Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 abstract description 17
- 238000012423 maintenance Methods 0.000 abstract description 10
- 238000004140 cleaning Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 description 10
- 230000005484 gravity Effects 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000003311 flocculating effect Effects 0.000 description 4
- 238000002513 implantation Methods 0.000 description 4
- 238000007726 management method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 239000011796 hollow space material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003466 welding Methods 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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- 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
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Treatment Of Biological Wastes In General (AREA)
Abstract
The invention discloses a sewage treatment process and integrated sludge treatment equipment, which comprise the following steps: s1: delivering domestic sewage into an anaerobic tank; s2: conveying the sewage subjected to anaerobic treatment into an anoxic tank; s3: delivering the sewage subjected to the anoxic treatment into an aerobic tank; s4: delivering the sewage after the aerobic treatment into a secondary sedimentation tank; s5: delivering the primarily precipitated sewage into a conditioning tank; s6: delivering sewage in the conditioning pond into an inclined tube sedimentation pond; s7: delivering the precipitated sewage into a disinfection metering canal for disinfection treatment, and then discharging the treated sewage up to the standard. According to the invention, the existing MBR technology is replaced by the technology of the integrated sludge treatment equipment, so that the sewage treatment station can continuously and stably run up to the standard, the operation cost is low, the problems of frequent cleaning and maintenance and high cost caused by the fact that the MBR membrane treatment system is lowered after running for a long time are avoided, and the integrated sludge treatment equipment is particularly suitable for sewage treatment stations with weak operation, maintenance and management capability.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to sewage treatment applied to concrete buildings, and specifically relates to a sewage treatment process and integrated sludge treatment equipment.
Background
Sewage treatment (wastewater treatment): the sewage is purified to meet the water quality requirement of being discharged into a certain water body or reused. The sewage treatment is widely applied to various fields of buildings, agriculture, traffic, energy sources, petrifaction, environmental protection, urban landscapes, medical treatment, catering and the like, and the sewage treatment is increasingly carried into the daily life of common people. The content of filterable residues in sewage is high, and if the residues are directly fed into a biochemical treatment system without treatment, the residues can accumulate in the biochemical treatment system to occupy a large amount of pool capacity, so that the pool capacity is continuously reduced, and finally the system is completely disabled. Meanwhile, substances with inhibition effect on the biological treatment process are removed, the load of biological reaction is reduced, the condition of the biological reaction is improved, and the method is an essential step for normal operation of a treatment system and reduction of operation cost.
As shown in FIG. 8, in the conventional sewage treatment system, A is often applied 2 O technology and MBR technology are combined to treat sewage, A 2 O (anaerobic-anoxic-aerobic) is a common secondary sewage treatment process, has the function of synchronous denitrification and dephosphorization, and can be used for secondary sewage treatment or tertiary sewageWater treatment; after the advanced treatment is added, the wastewater can be reused as reclaimed water, and has good denitrification and dephosphorization effects; the MBR is also called a membrane bioreactor, is a novel water treatment technology which combines an activated sludge method and a membrane separation technology, and is characterized in that the sewage is kept at a high activated sludge concentration in the MBR, and the organic load of biological treatment is improved, so that the occupied area of sewage treatment facilities is reduced, the residual sludge amount is reduced by keeping a low sludge load, and the MBR can keep microorganisms with longer generation period due to the effective interception effect of the MBR, so that the sewage can be deeply purified;
however, in using A 2 When the O process and the MBR process are combined to treat sewage, the applicant finds that after the MBR membrane treatment system is operated for a long time, the operation condition is reduced, so that the cleaning maintenance is frequent, the cost is higher, and for the sewage treatment station with weaker operation maintenance management capability, the overall operation cost of the sewage treatment is higher, the operation management difficulty is higher, and the continuous stable standard-reaching operation of the sewage treatment station is not facilitated, so that the applicant ensures that the effluent quality of the sewage treatment station reaches the standard (namely, A is not removed) 2 O process), a sewage treatment process and integrated sludge treatment equipment are provided to replace the existing MBR membrane treatment system.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a sewage treatment process and integrated sludge treatment equipment.
The invention adopts the following technical scheme to realize the aim:
a sewage treatment process, comprising the steps of:
s1: conveying domestic sewage collected in the water collecting well into an anaerobic tank for anaerobic treatment;
s2: delivering the sewage subjected to anaerobic treatment into an anoxic tank for anoxic treatment;
s3: conveying the sewage subjected to the anoxic treatment to an aerobic tank for aerobic treatment;
s4: delivering the sewage after the aerobic treatment to a secondary sedimentation tank for preliminary sedimentation, and returning the sedimented sludge to the aerobic tank in the step S3 for secondary treatment or delivering the sedimented sludge to a sludge concentration tank for storage;
s5: delivering the primarily precipitated sewage into a conditioning tank, further precipitating suspended matters in the sewage, and delivering the precipitated sludge into a sludge concentration tank for storage;
s6: delivering the sewage in the conditioning tank into an inclined tube sedimentation tank, continuously precipitating suspended matters in the sewage, and delivering the precipitated sludge into a sludge concentration tank for storage;
s7: delivering the precipitated sewage into a disinfection metering canal for final disinfection treatment, and then discharging the treated sewage up to the standard.
Further, in S4, S5 and S6, the sludge after concentration in the sludge concentration tank is dehydrated through the spiral-pile type sludge dehydrator, solid-liquid separation is achieved, supernatant produced in the sludge concentration tank and the spiral-pile type sludge dehydrator is returned to the water collecting well, and the separated sludge is transported outwards for treatment.
The utility model provides an integration sludge treatment equipment, includes the box, be equipped with two heavy ponds, the conditioning pond, intercommunication district and the inclined tube sedimentation tank of intercommunication in proper order in the box, be equipped with first baffle between two heavy ponds and the conditioning pond, first communication hole has been seted up on first baffle upper portion, be equipped with the second baffle between conditioning pond and the intercommunication district, the second intercommunicating pore has been seted up on second baffle upper portion, be equipped with the third baffle between intercommunication district and the inclined tube sedimentation tank, third baffle below and inclined tube sedimentation tank intercommunication, be equipped with the inlet tube on the two heavy ponds, the delivery port has been seted up on one side upper portion that the third baffle was kept away from to the inclined tube sedimentation tank.
Further, a central cylinder is arranged in the secondary sedimentation tank, a water inlet pipe extending to the outside of the secondary sedimentation tank is arranged on the upper portion of the central cylinder, a plurality of first sludge discharge pipes are arranged on the lower portion of the secondary sedimentation tank, and a first water outlet weir is arranged on the upper portion in the secondary sedimentation tank.
Further, the conditioning tank comprises a coagulating sedimentation tank and a flocculating sedimentation tank, a fourth partition plate is arranged between the coagulating sedimentation tank and the flocculating sedimentation tank, the coagulating sedimentation tank is communicated with the flocculating sedimentation tank below the fourth partition plate, the first communication hole is used for communicating the secondary sedimentation tank with the coagulating sedimentation tank, the second communication hole is used for communicating the flocculating sedimentation tank with the communication area, and a second sludge discharge pipe is arranged at the lower part of the conditioning tank.
Further, an inclined tube supporting net for placing inclined tube fillers is arranged in the inclined tube sedimentation tank, a plurality of third sludge discharge pipes are arranged at the lower part of the inclined tube sedimentation tank, and a second water outlet weir is arranged at the upper part in the inclined tube sedimentation tank.
Further, the first water outlet weir has the same structure as the second water outlet weir, and comprises a hollow water outlet weir bottom plate, wherein the water outlet weir bottom plate is provided with a water outlet weir body, a water outlet weir baffle is arranged in the hollow water outlet weir bottom plate, and the water outlet weir baffle is connected with the water outlet weir bottom plate through a connecting rod.
Further, a central cylinder support is arranged in the secondary sedimentation tank, the central cylinder is arranged on the central cylinder support, and the bottom of the central cylinder is communicated with the interior of the secondary sedimentation tank.
Further, the upper parts of the coagulating sedimentation tank and the flocculation sedimentation tank are respectively provided with a stirrer bracket for installing a stirrer.
Further, a plurality of supporting legs are arranged at the bottom of the box body.
Compared with the prior art, the invention provides a sewage treatment process and integrated sludge treatment equipment, which have the following beneficial effects:
1. according to the invention, the existing MBR technology is replaced by the technology of the integrated sludge treatment equipment, so that the sewage treatment station can continuously and stably run up to the standard, the operation cost is low, the operation management difficulty is low, the problems of frequent cleaning and maintenance and high cost caused by the decrease of the operation condition of an MBR membrane treatment system after long-time operation are avoided, and the integrated sludge treatment equipment is particularly suitable for sewage treatment stations with weak operation and maintenance management capability;
2. according to the invention, sewage sequentially passes through an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a conditioning tank and an inclined tube sedimentation tank, phosphorus substances in the sewage are removed through the anaerobic tank, nitrogen substances in the sewage are removed through the anoxic tank, organic substances such as BOD (biochemical oxygen demand), ammonia nitrogen and the like in the sewage are removed through the aerobic tank, mud-water separation is realized on the sewage in the secondary sedimentation tank under the action of gravity, so that large-particle suspended matters in the sewage are primarily sedimentated, then the sludge at the bottom is discharged through a first sludge discharge pipe, the sewage enters the conditioning tank through a first communication hole on a first partition board, PAC (PAC) and PAM (PAM) are added into the conditioning tank, the concentration of suspended matters in the sewage is further reduced, then the sewage enters the communication area through a second communication hole on a second partition board, more implantation is provided for suspended matters in the sewage through an inclined tube sedimentation tank by an inclined tube filler, the separated sludge slides down to the bottom of the inclined tube sedimentation tank along the filler under the action of gravity, the sedimentation efficiency and the treatment capacity are improved, then the sewage is conveyed to the sewage is subjected to final disinfection and metering treatment, and the sewage is discharged after reaching the standard;
3. the invention can be regarded as being compared with the traditional A when the original MBR membrane treatment system is not operated 2 The O process is combined, so that the effluent quality of the sewage treatment station can be ensured to reach the standard when the sewage treatment capacity is smaller, the problem of higher maintenance cost caused by long-time operation of the MBR membrane treatment system is avoided, and continuous and stable standard-reaching operation of the sewage treatment station is facilitated; when the sewage treatment capacity is large, the MBR membrane treatment system can be started to treat A 2 The O process, the MBR membrane treatment system and the integrated sludge treatment equipment are combined, so that the effluent quality of the sewage treatment station reaches the standard, the arrangement of the original station process equipment is not influenced, and the problem of high maintenance cost caused by long-time operation of the MBR membrane treatment system is avoided.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a process flow diagram of another embodiment of the present invention;
FIG. 3 is a schematic view of an exploded construction of the case of the present invention;
FIG. 4 is a schematic view of the structure of the case of the present invention;
FIG. 5 is a schematic cross-sectional view of the case of the present invention;
FIG. 6 is a schematic view of the structure of the first weir of the present invention;
FIG. 7 is a schematic view of the structure of the central cylinder and the water inlet pipe of the present invention;
fig. 8 is a conventional process flow diagram.
The mark in the figure is 1, the box body; 2. support legs; 11. a secondary sedimentation tank; 111. a central cylinder bracket; 112. a central cylinder; 113. a water inlet pipe; 114. a first sludge discharge pipe; 115. a first water outlet weir; 1151. a water outlet weir bottom plate; 1152. a water outlet weir body; 1153. a water outlet weir baffle; 1154. a connecting rod; 12. a conditioning pool; 121. a coagulating sedimentation tank; 122. a flocculation sedimentation tank; 123. a fourth separator; 124. a second sludge discharge pipe; 125. a blender support; 13. a pipe chute sedimentation tank; 131. a pipe chute support net; 132. a third sludge discharge pipe; 133. a second water outlet weir; 134. a water outlet; 14. a first separator; 141. a first communication hole; 15. a second separator; 151. a second communication hole; 16. a third separator; 17. and a communication area.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
standard parts used in the invention can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of all parts adopt conventional means such as mature bolts, rivets and welding in the prior art, the machinery, the parts and the equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that the details are not described.
It should be noted that the positional or positional relationship indicated by the terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying positive importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The embodiment of the invention provides a sewage treatment process, referring to fig. 1, comprising the following steps:
s1: conveying domestic sewage collected in the water collecting well into an anaerobic tank for anaerobic treatment to remove phosphorus substances in the sewage;
s2: delivering the sewage subjected to anaerobic treatment into an anoxic tank for anoxic treatment, and removing nitrogen substances in the sewage;
s3: delivering the sewage subjected to the anoxic treatment into an aerobic tank for aerobic treatment, removing organic substances such as BOD, ammonia nitrogen and the like in the sewage, specifically, performing blast aeration to the aerobic tank by a blower, and providing oxygen;
s4: the sewage after the aerobic treatment is conveyed into a secondary sedimentation tank 11 for preliminary sedimentation, the sewage is subjected to mud-water separation under the action of gravity, so that large-particle suspended matters in the sewage are subjected to preliminary sedimentation, and the sedimented sludge can flow back into the aerobic tank in the step S3 for treatment again, or the sedimented sludge is conveyed into a sludge concentration tank for storage;
s5: conveying the sewage subjected to preliminary precipitation into a conditioning tank 12, adding PAC and PAM into the conditioning tank 12, further precipitating suspended matters in the sewage, and conveying the precipitated sludge into a sludge concentration tank for storage;
s6: the sewage in the conditioning tank 12 is conveyed to the inclined tube sedimentation tank 13, suspended matters in the sewage are continuously sedimentated, more implantation is provided for the suspended matters in the sewage through the inclined tube filler, the separated sludge slides down to the bottom of the inclined tube sedimentation tank along the inclined plate filler under the action of gravity, the sedimentation efficiency and the treatment capacity are improved, and the sedimentated sludge is conveyed to the sludge concentration tank for storage;
s7: delivering the precipitated sewage into a disinfection metering canal for final disinfection treatment, and then discharging the treated sewage up to the standard.
Referring to fig. 1, in the present embodiment, in S4, S5 and S6, the sludge concentrated in the sludge concentration tank is dehydrated by the spiral-fold type sludge dehydrator, so as to realize solid-liquid separation, and the supernatant produced in the sludge concentration tank and the spiral-fold type sludge dehydrator is returned to the water collection well, and the supernatant is recycled again, so that the sewage can reach the discharge standard, and the separated sludge is transported to the outside for treatment, and can be incinerated.
Preferably, the sludge concentration tank is designed to concentrate for 20 hours.
Referring to fig. 3 to 5, an integrated sludge treatment device comprises a box body 1, a secondary sedimentation tank 11, a conditioning tank 12, a communication area 17 and an inclined tube sedimentation tank 13 which are sequentially communicated are arranged in the box body 1, a first partition plate 14 is arranged between the secondary sedimentation tank 11 and the conditioning tank 12, a first communication hole 141 is formed in the upper portion of the first partition plate 14, sewage in the secondary sedimentation tank 11 conveniently enters the conditioning tank 12, a second partition plate 15 is arranged between the conditioning tank 12 and the communication area 17, a second communication hole 151 is formed in the upper portion of the second partition plate 15, a third partition plate 16 is arranged between the communication area 17 and the inclined tube sedimentation tank 13, a water inlet pipe 113 is arranged on the secondary sedimentation tank 11, and a water outlet 134 is formed in the upper portion of one side, far away from the third partition plate 16, of the inclined tube sedimentation tank 13.
Specifically, sewage is subjected to mud-water separation under the action of gravity by arranging a secondary sedimentation tank 11, so that large-particle suspended matters in the sewage are subjected to primary sedimentation; further reducing the concentration of suspended matters in the sewage by arranging the conditioning tank 12; the sewage in the conditioning tank 12 conveniently enters the lower part of the inclined tube sedimentation tank 13 through the second communication hole 151 on the second partition plate 15 by arranging the communication area 17; the water outlet 134 is connected with the disinfection metering channel, and the water quality reaching the discharge standard is discharged outside through the disinfection metering channel; the first separator 14, the second separator 15, and the third separator 16 are disposed in parallel.
Referring to fig. 3 to 5, in the present embodiment, a central cylinder 112 is disposed in the secondary sedimentation tank 11, a water inlet pipe 113 extending to the outside of the secondary sedimentation tank 11 is disposed at the upper portion of the central cylinder 112, a plurality of first sludge discharge pipes 114 are disposed at the lower portion of the secondary sedimentation tank 11, and a first water outlet weir 115 is installed at the upper portion in the secondary sedimentation tank 11.
In this embodiment, a central cylinder support 111 is disposed in the secondary sedimentation tank 11, the central cylinder 112 is mounted on the central cylinder support 111, and the bottom of the central cylinder 112 is communicated with the interior of the secondary sedimentation tank 11, so that sewage can conveniently enter the lower portion of the secondary sedimentation tank 11 through the central cylinder 112, and mud-water separation of the sewage can be conveniently realized under the action of gravity.
Referring to fig. 7, specifically, a central cylinder 112 is longitudinally provided, the inside of the central cylinder 112 is hollow, the top and the bottom are opened, the lower part is in a horn shape with gradually increasing diameter from top to bottom, and the top of the central cylinder 112 is flush with the top of the secondary sedimentation tank 11; by providing a plurality of first sludge discharge pipes 114, the sludge at the bottom of the secondary sedimentation tank 11 can be discharged to the apparatus, and the sludge can be returned to the front end A 2 In an aerobic tank in the O process, the sludge concentration of the treatment system can be effectively controlled by adjusting the reflux quantity of the sludge, and the treatment capacity of the treatment system is further adjusted according to the actual load, so that the continuous and stable operation of the treatment system is ensured; by arranging the first water outlet weir 115 to control the water level in the secondary sedimentation tank 11, the water flow distribution of the discharged water is ensured to be uniform, and the problems of drift, short flow and the like of the discharged water are avoided.
Referring to fig. 3 to 5, in the present embodiment, the conditioning tank 12 includes a coagulating sedimentation tank 121 and a flocculation sedimentation tank 122, a fourth partition 123 is disposed between the coagulating sedimentation tank 121 and the flocculation sedimentation tank 122, the coagulating sedimentation tank 121 is communicated with the flocculation sedimentation tank 122 below the fourth partition 123, the first communication hole 141 communicates the secondary sedimentation tank 11 with the coagulating sedimentation tank 121, the second communication hole 151 communicates the flocculation sedimentation tank 122 with the communication area 17, and a second sludge discharge pipe 124 is disposed at the lower portion of the conditioning tank 12.
Specifically, the fourth separator 123 is disposed perpendicular to the first separator 14 and the second separator 15; PAC is added to the coagulation sedimentation tank 121, PAM is added to the flocculation sedimentation tank 122 to further reduce the concentration of suspended matters in the sewage, and the coagulating sedimentation (i.e., sludge) at the bottom of the conditioning tank 12 is discharged out of the apparatus through the second sludge discharge pipe 124.
Referring to fig. 3 to 5, in the present embodiment, a stirrer support 125 for installing a stirrer is provided at the upper parts of the coagulation sedimentation tank 121 and the flocculation sedimentation tank 122.
Install the mixer on mixer support 125 support, add PAC, PAM back, mix the stirring through the mixer for sewage mixes with PAC, PAM better, can be faster formation precipitate.
Referring to fig. 3 to 5, in the present embodiment, a chute support net 131 for placing chute fillers is provided in the chute precipitation tank 13, a plurality of third sludge discharge pipes 132 are provided at the lower portion of the chute precipitation tank 13, and a second water outlet weir 133 is installed at the upper portion of the chute precipitation tank 13.
Specifically, the inclined tube supporting net 131 is connected with the bottom of the third partition plate 16, so that the sewage enters the lower part of the inclined tube sedimentation tank 13 through the communication area 17 conveniently, flocculation reaction of sewage continuously occurs, the inclined tube filler is placed on the inclined tube supporting net 131, more implantation is provided for suspended matters in the sewage through the inclined tube filler, the separated sludge slides down to the bottom of the inclined tube sedimentation tank 13 along the inclined plate filler under the action of gravity, sedimentation efficiency and treatment capacity are improved, and preferably, the inclined tube filler is honeycomb inclined plate filler and adopts PP (polypropylene) materials; the inclined tube supporting net 131 is provided with a plurality of through holes, so that sludge is conveniently sunk into the bottom of the inclined tube sedimentation tank 13; discharging sludge from the apparatus through a plurality of third sludge discharge pipes 132; by arranging the second water outlet weir 133 to control the water level height in the inclined tube sedimentation tank 13, the uniform distribution of the water flow of the water outlet is ensured, and the problems of drift, short flow and the like of the water outlet are avoided.
Referring to fig. 3 and 6, in this embodiment, the first water outlet weir 115 and the second water outlet weir 133 have the same structure and each include a hollow water outlet weir bottom plate 1151, the water outlet weir bottom plate 1151 is provided with a water outlet weir body 1152, a water outlet weir baffle 1153 is disposed in the hollow space of the water outlet weir bottom plate 1151, and the water outlet weir baffle 1153 is connected with the water outlet weir bottom plate 1151 by a connecting rod 1154.
Specifically, in the secondary sedimentation tank 11, the weir bottom plate 1151 is flush with the bottom of the first communicating hole 141 of the first partition plate 14, the center tube 112 penetrates the weir bottom plate 1151, and in the inclined tube sedimentation tank 13, the weir bottom plate 1151 is flush with the bottom of the water outlet 134; the effluent flow is evenly distributed by the effluent weir body 1152, preferably the effluent weir body 1152 is wavy; the weir baffle 1153 is flush with the top of the weir body 1152 and controls the level of water in the pool; the water outlet weir baffle 1153 is located inside the water outlet weir body 1152, a hollow space is formed between the water outlet weir baffle 1153 and the water outlet weir body 1152, the bottom of the water outlet weir baffle 1153 extends out of the bottom of the water outlet weir bottom plate 1151, and the periphery of the bottom of the water outlet weir baffle 1153 is connected with the bottom of the water outlet weir bottom plate 1151 through a connecting rod 1154.
Referring to fig. 3 to 5, in the present embodiment, a plurality of support legs 2 are installed at the bottom of the case 1 to support the case 1.
In another embodiment, referring to fig. 2, the MBR membrane treatment system is still present in the process, and when the MBR membrane treatment system is not in operation, it can be regarded as the process of the integrated sludge treatment apparatus and the conventional a 2 The O process is combined, so that the effluent quality of the sewage treatment station can be ensured to reach the standard when the sewage treatment capacity is smaller, the problem of higher maintenance cost caused by long-time operation of the MBR membrane treatment system is avoided, and continuous and stable standard-reaching operation of the sewage treatment station is facilitated; when the sewage treatment capacity is large, the MBR membrane treatment system can be started to treat A 2 The O process, the MBR membrane treatment system and the integrated sludge treatment equipment are combined, so that the effluent quality of the sewage treatment station reaches the standard, the arrangement of the original station process equipment is not influenced, and the problem of high maintenance cost caused by long-time operation of the MBR membrane treatment system is avoided.
Working principle: the domestic sewage collected in the water collecting well is conveyed to an anaerobic tank for anaerobic treatment to remove phosphorus substances in the sewage, the sewage after anaerobic treatment is conveyed to an anoxic tank for anoxic treatment to remove nitrogen substances in the sewage, the sewage after anoxic treatment is conveyed to an aerobic tank for aerobic treatment to remove organic substances such as BOD, ammonia nitrogen and the like in the sewage, the sewage after aerobic treatment is conveyed to a central cylinder 112 through a water inlet pipe 113, the sewage enters the bottom of a secondary sedimentation tank 11 from the bottom of the central cylinder 112, mud-water separation is realized under the action of gravity, large-particle suspended matters in the sewage are primarily precipitated, then the sludge at the bottom is discharged out of the device through a first sludge discharge pipe 114, the precipitated sludge can be returned to the aerobic tank for further treatment, or the precipitated sludge is conveyed to a sludge concentration tank for storage, the sewage in the upper part of the secondary sedimentation tank 11 uniformly flows out to the water outlet weir bottom plate 1151 through the water outlet weir body 1152 of the first water outlet weir 115, then the sewage enters the coagulating sedimentation tank 121 through the first communication hole 141 on the first partition plate 14, the sewage enters the flocculation sedimentation tank 122 through the lower part of the coagulating sedimentation tank 121, PAC is added into the coagulating sedimentation tank 121, PAM is added into the flocculation sedimentation tank 122, and the mixing and stirring are carried out through a stirrer, so that the sewage is better mixed with PAC and PAM, sediment can be formed faster, the coagulating sedimentation (namely, sludge) at the bottom of the conditioning tank 12 is discharged out through the second sludge discharge pipe 124, the settled sludge is conveyed into the sludge concentration tank for storage, then the sewage enters the communication area 17 through the second communication hole 151 on the second partition plate 15, enters the lower part of the inclined tube sedimentation tank 13 through the lower part of the communication area 17, the flocculation reaction of the sewage continuously occurs, the inclined tube filler is placed on the inclined tube supporting net 131, more implantation is provided for suspended matters in sewage through the inclined tube filler, separated sludge slides down to the bottom of the inclined tube sedimentation tank 13 along the inclined tube filler under the action of gravity, sedimentation efficiency and treatment capacity are improved, sludge is discharged through a plurality of third sludge discharging pipes 132, the precipitated sludge is conveyed into a sludge concentration tank to be stored, sewage uniformly flows out onto a water outlet weir bottom plate 1151 through a water outlet weir body 1152 of the second water outlet weir 133 after passing through the inclined tube filler, then the sewage flows out through a water outlet 134, the sewage is conveyed into a disinfection metering canal to be subjected to final disinfection treatment, and then the treated sewage is discharged after reaching standards.
The sludge after concentration in the sludge concentration tank is dehydrated through the spiral-fold type sludge dehydrator, so that solid-liquid separation is realized, supernatant produced in the sludge concentration tank and the spiral-fold type sludge dehydrator is returned to the water collecting well, and the supernatant is subjected to circulation treatment again, so that sewage can reach the discharge standard, the separated sludge is transported outwards for treatment, and incineration treatment can be carried out.
What is not described in detail in this specification is prior art known to those skilled in the art.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention. It will be apparent that the described embodiments are merely some, but not all, embodiments of the invention. Based on these embodiments, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may still combine, add or delete features of the embodiments of the present invention or make other adjustments according to circumstances without any conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present invention, which also falls within the scope of the present invention.
Claims (10)
1. The sewage treatment process is characterized by comprising the following steps of:
s1: conveying domestic sewage collected in the water collecting well into an anaerobic tank for anaerobic treatment;
s2: delivering the sewage subjected to anaerobic treatment into an anoxic tank for anoxic treatment;
s3: conveying the sewage subjected to the anoxic treatment to an aerobic tank for aerobic treatment;
s4: delivering the sewage after the aerobic treatment to a secondary sedimentation tank (11) for preliminary sedimentation, and refluxing the sedimented sludge to the aerobic tank in the step S3 for treatment again, or delivering the sedimented sludge to a sludge concentration tank for storage;
s5: the sewage subjected to preliminary sedimentation is conveyed into a conditioning tank (12), suspended matters in the sewage are further precipitated, and the precipitated sludge is conveyed into a sludge concentration tank for storage;
s6: delivering sewage in the conditioning tank (12) into an inclined tube sedimentation tank (13) to enable suspended matters in the sewage to be continuously sedimentated, and delivering the sedimentated sludge into a sludge concentration tank for storage;
s7: delivering the precipitated sewage into a disinfection metering canal for final disinfection treatment, and then discharging the treated sewage up to the standard.
2. The sewage treatment process according to claim 1, wherein in S4, S5 and S6, the sludge concentrated in the sludge concentration tank is dehydrated by a spiral-pile type sludge dehydrator to achieve solid-liquid separation, and the supernatant produced in the sludge concentration tank and the spiral-pile type sludge dehydrator is returned to the water collection well to carry out the treatment of the separated sludge.
3. An integrated sludge treatment device is based on the sewage treatment technology according to any one of claims 1-2, and is characterized by comprising a box body (1), a secondary sedimentation tank (11), a conditioning tank (12), a communication area (17) and an inclined tube sedimentation tank (13) which are sequentially communicated are arranged in the box body (1), a first partition plate (14) is arranged between the secondary sedimentation tank (11) and the conditioning tank (12), a first communication hole (141) is formed in the upper portion of the first partition plate (14), a second partition plate (15) is arranged between the conditioning tank (12) and the communication area (17), a second communication hole (151) is formed in the upper portion of the second partition plate (15), a third partition plate (16) is arranged between the communication area (17) and the inclined tube sedimentation tank (13), a water inlet pipe (113) is arranged on the secondary sedimentation tank (11), and a water outlet (134) is formed in the upper portion of one side, far away from the third partition plate (16).
4. An integrated sludge treatment apparatus as claimed in claim 3, wherein a central cylinder (112) is provided in the secondary sedimentation tank (11), a water inlet pipe (113) extending to the outside of the secondary sedimentation tank (11) is provided at the upper part of the central cylinder (112), a plurality of first sludge discharge pipes (114) are provided at the lower part of the secondary sedimentation tank (11), and a first water outlet weir (115) is provided at the upper part in the secondary sedimentation tank (11).
5. The integrated sludge treatment equipment according to claim 4, wherein the conditioning tank (12) comprises a coagulating sedimentation tank (121) and a flocculation sedimentation tank (122), a fourth partition plate (123) is arranged between the coagulating sedimentation tank (121) and the flocculation sedimentation tank (122), the coagulating sedimentation tank (121) and the flocculation sedimentation tank (122) are communicated under the fourth partition plate (123), the first communication hole (141) communicates the secondary sedimentation tank (11) with the coagulating sedimentation tank (121), the second communication hole (151) communicates the flocculation sedimentation tank (122) with the communication area (17), and a second sludge discharge pipe (124) is arranged at the lower part of the conditioning tank (12).
6. The integrated sludge treatment equipment according to claim 5, wherein a pipe chute supporting net (131) for placing pipe chute fillers is arranged in the pipe chute sedimentation tank (13), a plurality of third sludge discharge pipes (132) are arranged at the lower part of the pipe chute sedimentation tank (13), and a second water outlet weir (133) is arranged at the upper part in the pipe chute sedimentation tank (13).
7. The integrated sludge treatment equipment according to claim 6, wherein the first water outlet weir (115) and the second water outlet weir (133) have the same structure and comprise hollow water outlet weir bottom plates (1151), water outlet weir bodies (1152) are installed on the water outlet weir bottom plates (1151), water outlet weir baffle plates (1153) are arranged in the hollow of the water outlet weir bottom plates (1151), and the water outlet weir baffle plates (1153) are connected with the water outlet weir bottom plates (1151) through connecting rods (1154).
8. The integrated sludge treatment equipment according to claim 4, wherein a central cylinder support (111) is arranged in the secondary sedimentation tank (11), the central cylinder (112) is arranged on the central cylinder support (111), and the bottom of the central cylinder (112) is communicated with the interior of the secondary sedimentation tank (11).
9. The integrated sludge treatment equipment according to claim 5, wherein the upper parts of the coagulating sedimentation tank (121) and the flocculation sedimentation tank (122) are respectively provided with a stirrer bracket (125) for installing a stirrer.
10. An integrated sludge treatment plant as claimed in claim 3, characterised in that the bottom of the tank (1) is fitted with a plurality of support legs (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202311192215.3A CN117003440A (en) | 2023-09-15 | 2023-09-15 | Sewage treatment process and integrated sludge treatment equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311192215.3A CN117003440A (en) | 2023-09-15 | 2023-09-15 | Sewage treatment process and integrated sludge treatment equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118667639A (en) * | 2024-08-23 | 2024-09-20 | 四川省冶勘设计集团生态环境工程有限公司 | Residual body fermentation integrated treatment device for agricultural land with heavy metal pollution after phytoremediation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113264645A (en) * | 2021-06-09 | 2021-08-17 | 中铁环境科技工程有限公司 | Domestic sewage treatment system and treatment method |
| CN220834283U (en) * | 2023-09-15 | 2024-04-26 | 四川省冶勘设计集团生态环境工程有限公司 | Integrated sludge treatment equipment |
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- 2023-09-15 CN CN202311192215.3A patent/CN117003440A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113264645A (en) * | 2021-06-09 | 2021-08-17 | 中铁环境科技工程有限公司 | Domestic sewage treatment system and treatment method |
| CN220834283U (en) * | 2023-09-15 | 2024-04-26 | 四川省冶勘设计集团生态环境工程有限公司 | Integrated sludge treatment equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118667639A (en) * | 2024-08-23 | 2024-09-20 | 四川省冶勘设计集团生态环境工程有限公司 | Residual body fermentation integrated treatment device for agricultural land with heavy metal pollution after phytoremediation |
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