CN100471798C - Highly effective waste water treatment technique - Google Patents
Highly effective waste water treatment technique Download PDFInfo
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- CN100471798C CN100471798C CNB2004100349733A CN200410034973A CN100471798C CN 100471798 C CN100471798 C CN 100471798C CN B2004100349733 A CNB2004100349733 A CN B2004100349733A CN 200410034973 A CN200410034973 A CN 200410034973A CN 100471798 C CN100471798 C CN 100471798C
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- 238000000034 method Methods 0.000 title claims abstract description 105
- 238000004065 wastewater treatment Methods 0.000 title claims description 28
- 239000002351 wastewater Substances 0.000 claims abstract description 75
- 239000010802 sludge Substances 0.000 claims abstract description 46
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 42
- 239000001301 oxygen Substances 0.000 claims abstract description 42
- 238000011282 treatment Methods 0.000 claims abstract description 35
- 239000010842 industrial wastewater Substances 0.000 claims abstract description 9
- 238000010992 reflux Methods 0.000 claims description 26
- 230000000694 effects Effects 0.000 claims description 22
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 14
- 238000005273 aeration Methods 0.000 claims description 12
- 238000001556 precipitation Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims 1
- 230000000813 microbial effect Effects 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 5
- 235000015097 nutrients Nutrition 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 150000002505 iron Chemical class 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 239000000945 filler Substances 0.000 description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 230000009189 diving Effects 0.000 description 8
- 244000005700 microbiome Species 0.000 description 7
- 238000013019 agitation Methods 0.000 description 6
- 238000005188 flotation Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 239000000975 dye Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002957 persistent organic pollutant Substances 0.000 description 4
- 231100000331 toxic Toxicity 0.000 description 4
- 230000002588 toxic effect Effects 0.000 description 4
- 239000002028 Biomass Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 229920004934 Dacron® Polymers 0.000 description 1
- 239000012028 Fenton's reagent Substances 0.000 description 1
- 241001268407 Loweria Species 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000031709 bromination Effects 0.000 description 1
- 238000005893 bromination reaction Methods 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002828 nitro derivatives Chemical class 0.000 description 1
- 230000000050 nutritive effect Effects 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000000247 postprecipitation Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- 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
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Activated Sludge Processes (AREA)
Abstract
The high efficiency waste water treating process has raised biochemical treatment and decolorizing and reduced sludge producing amount, and can provides microbe in waste water with nutrients. The treating apparatus includes waste water regulating pond, biochemical treating pond and physical and chemical treating pond. The biochemical treatment includes two or three sections and each section includes facultative treatment, aerobic treatment and active sludge treatment separately in corresponding ponds. The waste water regulating pond and the biochemical treating pond have small amount of iron salt thrown, the biochemical treating pond may have microbial stuffing, and the facultative pond is provided with stirrer and oxygen supplier. The first section of biochemical treatment has high volume load and great microbe amount, and the second and third sections have low volume load. The present invention may be used in treating various kinds of industrial waste water.
Description
Technical field:
The present invention relates to field of environment protection, further be meant a kind of technique for treating industrial wastewater.
Background technology:
The design objective of waste water treatment process is to take into account treatment effect, processing efficiency and operation processing costs.Biochemical treatment process for wastewater has that simple and convenient management, working cost are cheap, the advantage of non-secondary pollution, is widely used in the sewage disposal occasion.But many trade effluents are low owing to the BOD/COD value, thereby can't carry out biochemical treatment.Also have many waste water to contain very high colourity, biochemical treatment can not be decoloured it.In order to improve biodegradability and decolouring, in wastewater treatments such as those printing and dyeing, dyestuff, chemical industry, medicine, papermaking, the environment-friendly engineering teacher adopts the dosing pretreatment process more, at the feed-water end of sewage treatment technology process the dosing settling tank is set.This method has also produced a large amount of materialized muds when improving biodegradability and decolouring, bring secondary pollution.
Summary of the invention:
The technical problem to be solved in the present invention provides a kind of new technique for treating industrial wastewater, under the prerequisite of generation that reduces materialized mud and investment, improves biodegradability and decolouring.
For this reason, the present invention is by the following technical solutions:
The present invention includes wastewater equalization pond, biochemical treatment tank and materialization treating pond.The treating processes of waste water comprises waste water adjusting, biochemical treatment and subsequent disposal.The wastewater biochemical treating pond adopts the multistage biochemical processing process, and its wastewater treatment comprises following method steps successively:
(1) waste water is handled at an aerobic biochemical treating pond aeration biochemical of first section biochemical processing process, and its volumetric loading is greater than 5 kilograms of BOD/ cubic meter skies, and 30 minutes settling ratios of active sludge are greater than 30%, and adds 0.04-0.8 kilogram molysite by waste water per ton;
(2) waste water is at a heavy pond precipitation active sludge of first section biochemical processing process, and activity sludge reflux is to an aerobic biochemical treating pond;
(3) waste water is in two facultative anaerobic biochemical treating pond biochemical treatments of second section biochemical processing process, and its volumetric loading is less than 1 kilogram of BOD/ cubic meter sky;
(4) waste water is handled at two aerobic biochemical treating pond aeration biochemicals of second section biochemical processing process, and its volumetric loading is less than 1 kilogram of BOD/ cubic meter sky;
(5) waste water is at the second pond precipitation active sludge of second section biochemical processing process, and activity sludge reflux is to two facultative anaerobic biochemical treating ponds.
In the aforesaid multistage biochemical processing process, in some occasion, wastewater biodegradability is very low, and aerobic bacteria anti impulsion load ability is more weak, in order to prevent the impact of waste water, before the aerobic biochemical treating pond of first section biochemical processing process, also be provided with a facultative anaerobic biochemical treating pond to an aerobic biochemical treating pond, waste water is in an oxygen compatibility pool biochemical treatment, and its volumetric loading is greater than 2 kilograms of BOD/ cubic meter skies.Activity sludge reflux is to a facultative anaerobic biochemical treating pond.Molysite adds and a little can continue to be arranged on an aerobic biochemical treating pond, also can be arranged on a facultative anaerobic biochemical treating pond, and adds 0.04-0.8 kilogram molysite by waste water per ton.
In the aforesaid multistage biochemical processing process, when the special difficult degradation of waste water, behind second section biochemical processing process in the method for wastewater treatment step of multistage biochemical processing process, also have the 3rd section biochemical processing process, because the difference of microorganism phase makes the wastewater biochemical processing efficiency improve.Its wastewater treatment comprises following method steps successively:
(1) waste water is in three facultative anaerobic biochemical treating pond biochemical treatments of the 3rd section biochemical processing process, and its volumetric loading is less than 0.5 kilogram of BOD/ cubic meter sky;
(2) waste water is handled at three aerobic biochemical treating pond aeration biochemicals of the 3rd section biochemical processing process, and its volumetric loading is less than 0.5 kilogram of BOD/ cubic meter sky;
(6) waste water is at three heavy pond precipitation active sludge of the 3rd section biochemical processing process, activity sludge reflux.
In the aforesaid multistage biochemical processing process, in order to improve the oxygen efficiency of holding concurrently in the waste water treatment process, the bottom of the facultative anaerobic biochemical treating pond of multistage biochemical processing process is provided with whipping appts.In order to control dissolved oxygen value, sometimes need to install little aeration apparatus of oxygen supply, control DO 0-0.6mg/L.
In the aforesaid multistage biochemical processing process, Aerobic Pond and oxygen compatibility pool process procedure can be provided with microbe stuffing and form different microorganism phases to improve microorganism concn with making it, and utilize the synergy of suspension active sludge and attached type microbial film to handle waste water.Also can directly adopt Wastewater Treated by Activated Sludge Process waste water.The active sludge post precipitation refluxes.
In the aforesaid multistage biochemical processing process, in the second section biochemical processing process that adopts three sections biochemical processing process, after hanging microbe stuffing in aerobic biochemical treatment tank and the facultative anaerobic biochemical treating pond process procedure, and when the microbial biomass on the microbe stuffing enough reaches design requirements, perhaps aerobic biochemical treating pond or facultative anaerobic biochemical treating pond do not hang microbe stuffing and when active mud content is enough in the biochemical treatment of wastewater, activated sludge settling tank can be set.
In aforesaid three sections biochemical processing process, when activated sludge settling tank not being set in second section biochemical processing process, active sludge directly enters the 3rd section biochemical processing process.The activity sludge reflux in three heavy ponds of the 3rd section biochemical processing process replenishes active mud content in second section biochemical processing process to two oxygen compatibility pools.
In aforesaid three sections biochemical processing process, when microbial biomass is enough in the 3rd section biochemical processing process, can not establish three heavy ponds, active sludge does not reflux. and waste water discharges after by the materialization treatment process.
In the aforesaid multistage biochemical processing process, Aerobic Pond can have different designs with the oxygen compatibility pool process procedure: hang microbe stuffing or do not hang microbe stuffing. at second section biochemical processing process and the 3rd section biochemical processing process, according to Aerobic Pond and oxygen compatibility pool hanging filler whether with the design of microbial biomass, the activated sludge settling tank returnedactivatedsludge can be set, activated sludge settling tank perhaps is not set, and active sludge does not reflux.Thereby in a sewage treatment technology process, form the various combination in microbial film biochemistry pool and activated sludge biochemical pond.First section biochemical processing process section must have activated sludge settling tank, and second section biochemical processing process and the 3rd section biochemical processing process can be with activated sludge settling tank.
In the aforesaid waste water treatment process, in some wastewater treatment occasion, wastewater equalization pond is arranged on underground, offers medicine and manages more conveniently, and molysite adds and a little is arranged on wastewater equalization pond, requires to be provided with in the equalizing tank whipping appts simultaneously.
In the aforesaid waste water treatment process, in waste water, contain in some special toxic organic pollutant, can realize that by add molysite or iron powder at wastewater equalization pond reduction handles, reduzate can be in follow-up settling region of equalizing tank or precipitation bucket precipitate and separate.In engineering construction, molysite adds an operated by rotary motion one place.Also many places can be set.
In the aforesaid waste water treatment process, in the time of after waste water multistage biochemical processing process is handled, emission standard can being reached, the subsequent disposal facility can be set.
When aforesaid waste water treatment process is used in common waste water treatment process, it is follow-up to be treated to materialization and to handle, as air flotation pool, settling tank, filter tank, also can adopt biological filter etc. to have both the process form of materialization processing and biochemical treatment function, or the array configuration of materialization processing and biochemical treatment function.
The not high trade effluent of biodegradability for not having colourity, can adopt the present invention as the processing technological flow that improves biodegradability. for example for the trade effluent that has toxic organic pollutant such as nitro-compound, can adopt the present invention to reduce organism, improve the biodegradability of waste water, realize effective biochemical treatment of waste water.For the trade effluent that lacks nutritive element in the waste water,, improve the microorganism adaptive faculty by adding the molysite element that can supplement the nutrients.Trade effluent for having toxic organic pollutant such as halogenated organic matters can adopt technology of the present invention, changes molysite into Zero-valent Iron (iron powder) and reduces organism, improves the biodegradability of waste water, realizes effective biochemical treatment of waste water.
For the waste water that contains a large amount of suspended substances,, after in first section biochemical processing process pond, handling, can discharge the low mixing sludge of water ratio from a heavy pond by adding molysite coagulation, absorption.
For the wastewater from chemical industry that contains the high toxic organic pollutant of high density, the only forward waste water treatment process of stating can not reach emission standard, after its subsequent disposal can adopt strong oxide treatment means, carrying out biochemistry-materialization again and handle. its subsequent treatment process comprises the following steps: the strong oxide treatment of (1) waste water; (2) the waste water oxygen of holding concurrently is handled: (3) waste water aerobic is handled: (4) active sludge precipitation also refluxes; (5) waste water physicochemical is handled.By the combination of its processing step, realize the wastewater to reach standard processing.
In engineering construction, equalizing tank is generally underground type, and biochemical treatment tank and materialization treating pond are ground type.The materialization treating pond adopts air flotation pool or settling tank. and each of biochemical treatment tank section biochemical processing process can be combined in the structures, also can segmentation, the division technique pond is provided with.Biochemical treatment tank and materialization pond also can be combined in the structures.When air flotation pool adopted device structure, air flotation pool was provided with separately. and when the anxiety of planimetric position, equalizing tank, biochemical treatment tank and materialization treating pond can conjunctedly be provided with.
The present invention and existing waste water treatment process relatively have obvious advantage: (1) is adopted and is offerd medicine in biochemical processing process, reduces dosage, running expense and big dosage management link, and the dispensing point is provided with flexible, is convenient to engineering construction; (2) reduce the mud generation, reduce the secondary pollution chance; (3), obtain CO absorption D ability by the molysite coagulation; (4) first sections biochemical processing process have strong surge capability, and pH keeps 7-7.5 automatically, reduce pH regulator link and expense, are convenient to follow-up biochemical processing process running; (5) first sections biochemical processing process are in high microorganism concentration, and microorganism is abundant mutually, BOD clearance height; (6) the multistage biochemical processing process forms the different microorganisms phase, is convenient to used water difficult to degradate and effectively handles; (7) the underload biochemical processing process of second and third section biochemical processing process guarantees the complete bio-oxidation processing of waste water; (8) the materialization treating pond is set and checks on, guarantee that wastewater treatment reaches emission standard; (9) waste water treatment process covers face width; (10) reduce investment outlay.
The high chromaticity industrial waste water of bio-refractories such as the present invention can be applicable to print and dye, dyestuff, chemical industry, medicine, agricultural chemicals, light industry is handled.
Embodiment:
Embodiment 1: be applied to the woven dacron treatment of dyeing wastewater. comprise following process procedure successively: equalizing tank (HRT10h); One Aerobic Pond (4.8kgBOD/m
3D); One heavy pond (1.2m
3/ m
2H); Two oxygen compatibility pool (0.6kgBOD/m
3D); Two Aerobic Pond (0.4kgBOD/m
3D); Second pond (0.8m
3/ m
2H); Dosing settling tank (0.6m
3/ m
2H).Biochemistry pool hangs plane filler 80%. one Aerobic Ponds and adds 0.06kgFeCl
3/ ton waste water.Oxygen compatibility pool is provided with stirrer at the bottom of the pond. and a heavy pond activity sludge reflux is to an Aerobic Pond. and the second pond activity sludge reflux is to two oxygen compatibility pools.One Aerobic Pond SV30 control 50%.The former water pH8-9 of waste water, colourity 600-1200 times, COD800-950mg/L, BOD165-360mg/L. Waste Water Treatment water outlet pH6.5-7.5, colourity 32-64 times, COD40-80mg/L.
Embodiment 2: be applied to the reactive dyestuffs production wastewater treatment, comprise following process procedure successively: equalizing tank (HRT16h); One oxygen compatibility pool (2.6kgBOD/m
3D); One Aerobic Pond (2.8kgBOD/m
3D); One heavy pond (1.4m
3/ m
2H); Two oxygen compatibility pool (0.8kgBOD/m
3D); Two Aerobic Pond (0.6kgBOD/m
3D); Second pond (0.8m
3/ m
2H); Three oxygen compatibility pool (0.2kgBOD/m
3D); Two Aerobic Pond (0.4kgBOD/m
3D); Three heavy pond (0.6m
3/ m
2H). 5 meters of biochemistry pool virtual heights, hang 4 meters of elastic fillers.Oxygen compatibility pool is provided with diving mixer and aerating apparatus, and control DO0.1-0.4mg/L. one heavy pond activity sludge reflux is to an oxygen compatibility pool. and the second pond activity sludge reflux is to two oxygen compatibility pools. and three heavy pond activity sludge reflux are to three oxygen compatibility pools.One Aerobic Pond SV30 control adds 0.15kgFeSO greater than 35%. equalizing tanks
4/ ton waste water is provided with aeration agitation, and add liquid caustic soda and regulate the former water pH4-6 of pH7-8. waste water, colourity 400-800 times, COD 1200-1600mg/L, BOD 220-365mg/L.Wastewater treatment biochemical system water outlet pH7-7.5, colourity 64-128 times, COD82-116mg/L.
Embodiment 3: be applied to pesticide wastewater and handle, comprise following process procedure successively: equalizing tank (HRT8h) adds 0.1kgFeSO
4/ ton waste water is provided with aeration agitation, adds liquid caustic soda and regulates pH7-8; One oxygen compatibility pool (2.2kgBOD/m
3D), 5 meters of virtual heights hang 3.5 meters of soft-fillers, and diving mixer and aerating apparatus are set; One Aerobic Pond (4kgBOD/m
3D), 5 meters of virtual heights, no filler, SV30 are controlled greater than 35%; One heavy pond (1.2m
3/ m
2H), activity sludge reflux one oxygen compatibility pool; Two oxygen compatibility pool (0.6kgBOD/m
3D), 5 meters of virtual heights hang 3.5 meters of soft-fillers, and diving mixer is set; Two Aerobic Ponds (O.6kgBOD/m
3D), 5 meters of virtual heights hang 4.5 meters of soft-fillers, no second pond; Three oxygen compatibility pool (0.3kgBOD/m
3D), no filler is provided with diving mixer; Two Aerobic Pond (0.2kgBOD/m
3D), 4.5 meters of virtual heights hang 4 meters of soft-fillers; Three heavy pond (0.6m
3/ m
2H), activity sludge reflux two oxygen compatibility pools; Biological filter (4.2m/h) adds PAC, PAM.The former water pH5-6 of waste water, colourity 400-640 times, COD 850-1100mg/L, BOD 92-310mg/L.Waste Water Treatment water outlet pH6.5-7.5, colourity 64-120 times, COD35-110mg/L.
Embodiment 4: be applied to the fine chemistry industry production wastewater treatment, comprise following process procedure successively: equalizing tank (HRT6.5h); One oxygen compatibility pool (4.2kgBOD/m
3D), 5 meters of virtual heights hang 3.5 meters of combined stuffings, and diving mixer and aerating apparatus are set, and add 0.16kgFeSO
4/ ton waste water adds liquid caustic soda and regulates pH7-8, control DO0.1-0.4mg/L; One Aerobic Pond (4kgBOD/m
3D), 5 meters of virtual heights, no filler, SV30 are controlled greater than 45%; One heavy pond (1.05m
3/ m
2H), activity sludge reflux one oxygen compatibility pool; Two oxygen compatibility pool (0.6kgBOD/m
3D), 5 meters of virtual heights hang 3.5 meters of combined stuffings, and diving mixer and little aerating apparatus are set; Two Aerobic Pond (0.6kgBOD/m
3D), 5 meters of virtual heights hang 4.5 meters of combined stuffings, and SV30 controls greater than 25%; No second pond; Three oxygen compatibility pool (0.36kgBOD/m
3D), 4.5 meters of virtual heights hang 3 meters of combined stuffings, and diving mixer and aerating apparatus are set; Three Aerobic Pond (0.2kgBOD/m
3D), 4.5 meters of virtual heights hang 4 meters of combined stuffings; Three heavy pond (0.6m
3/ m
2H), activity sludge reflux two oxygen compatibility pools; Subsequent technique: strong oxidation trough, oxygen compatibility pool, Aerobic Pond, activated sludge settling tank, air flotation pool.The former water pH5-8 of waste water, colourity 200-800 times, COD1460-1680mg/L, BOD160-460mg/L.Waste Water Treatment water outlet pH6.2-7.4, colourity 32-64 times, COD65-88mg/L.
Embodiment 5: be applied to the paper wastewater treatment, comprise following process procedure successively: equalizing tank (HRT8h); One Aerobic Pond (12kgBOD/m
3D), 5 meters of virtual heights, no filler adds 0.08kgFeSO
4/ ton waste water is provided with aeration agitation, and SV30 controls greater than 70-80%; One heavy pond (0.85m
3/ m
2D), activity sludge reflux one Aerobic Pond; Two oxygen compatibility pool (0.5kgBOD/m
3D), no filler is provided with little aeration agitation device, control DO0.2-0.5mg/L; Two Aerobic Pond (0.7kgBOD/m
3D), 5 meters of virtual heights hang 4.5 meters of combined stuffings, and SV30 controls greater than 20%; Second pond (0.86m
3/ m
2H), activity sludge reflux two oxygen compatibility pools; Three oxygen compatibility pool (0.4kgBOD/m
3D), 4.5 meters of virtual heights hang 3 meters of combined stuffings, and little aeration agitation device is set, control DO0.2-0.4mg/L; Three Aerobic Pond (0.2kgBOD/m
3D), 4.5 meters of virtual heights hang 4 meters of combined stuffings, and SV30 controls greater than 15%, do not have three heavy ponds; Dosing settling tank (0.6m
3/ m
2H), add PAC, PAM.The former water pH7-9 of waste water, colourity 600-1200 times, COD940-1150mg/L, BOD260-310mg/L. Waste Water Treatment water outlet pH6.1-8.2,50 times of colourities, COD84-150mg/L.
Embodiment 6: be applied to contain the dispersed dye production wastewater treatment of bromination waste water, comprise following process procedure successively: equalizing tank (HRT8h) back segment band settling region and bucket (HRT6h); One oxygen compatibility pool (4kgBOD/m
3D), control DO0-0.4mg/L; One Aerobic Pond (2kgBOD/m
3D); One heavy pond (1.4m
3/ m
2H); Two oxygen compatibility pool (0.6kgBOD/m
3D), control DO0.2-0.6mg/L; Two Aerobic Pond (0.4kgBOD/m
3D); Second pond (0.8m
3/ m
2H); Subsequent disposal facility: FENTON reagent oxidation groove, oxygen compatibility pool, Aerobic Pond, settling tank (band mud refluxes).Equalizing tank adds 0.1kg120 order iron powder/ton waste water+add 0.1kgFeSO
4/ ton waste water is provided with aeration agitation, adds milk of lime and regulates pH7-8, at back segment settling region and bucket precipitation reducing agents.5 meters of biochemistry pool virtual heights hang 4 meters of elastic fillers.Oxygen compatibility pool is provided with diving mixer and little aerating apparatus, control DO0.1-0.3mg/L.One heavy pond activity sludge reflux is to an oxygen compatibility pool.The second pond activity sludge reflux is to two oxygen compatibility pools.One Aerobic Pond SV30 control is greater than 35%.Air flotation pool adds PAC, PAM, discoloring agent.The former water pH2-3 of waste water, colourity 600-1200 times, COD600-1400mg/L, BOD130-165mg/L.Waste Water Treatment water outlet pH6-7.5, colourity 32-64 times, COD58-86mg/L.
Claims (3)
- A kind of technique for treating industrial wastewater1. technique for treating industrial wastewater, the treating processes of waste water comprises waste water adjusting, biochemical treatment and subsequent disposal, it is characterized in that the biochemical treatment process adopts the multistage biochemical processing process, its wastewater treatment comprises following method steps successively:(1) trade effluent enters wastewater equalization pond, at wastewater equalization pond molysite is set and adds a little, and the stirring homogeneous device is set in the equalizing tank, and the molysite dosage is a waste water 0.04-0.1 kilogram per ton;(2) make aeration biochemical through step (1) waste water at an aerobic biochemical treating pond of first section biochemical processing process and handle, its volumetric loading is greater than 2 kilograms of BOD/ cubic meter skies, and 30 minutes settling ratios of active sludge are greater than 30%;(3) through the heavy pond precipitation active sludge of step (2) waste water at first section biochemical processing process, activity sludge reflux is to an aerobic biochemical treating pond;(4) through the two facultative anaerobic biochemical treating pond biochemical treatments of step (3) waste water at second section biochemical processing process, its volumetric loading is less than 1 kilogram of BOD/ cubic meter sky;(5) handle at two aerobic biochemical treating pond aeration biochemicals of second section biochemical processing process through step (4) waste water, its volumetric loading is less than 1 kilogram of BOD/ cubic meter sky;(6) through the second pond precipitation active sludge of step (5) waste water at second section biochemical processing process, activity sludge reflux is to two facultative anaerobic biochemical treating ponds.
- 2. according to the described a kind of technique for treating industrial wastewater of claim 1, the molysite that it is characterized in that it adds and a little changes in the Aerobic Pond that is located at step (2), and the molysite dosage is a waste water 0.04-0.1 kilogram per ton.
- 3. according to the described a kind of technique for treating industrial wastewater of claim 1, it is characterized in that it step (1) and step (2) between be provided with an oxygen compatibility pool, the activity sludge reflux of step (3) is to an oxygen compatibility pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100349733A CN100471798C (en) | 2004-05-01 | 2004-05-01 | Highly effective waste water treatment technique |
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|---|---|---|---|
| CNB2004100349733A CN100471798C (en) | 2004-05-01 | 2004-05-01 | Highly effective waste water treatment technique |
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| CN1689993A CN1689993A (en) | 2005-11-02 |
| CN100471798C true CN100471798C (en) | 2009-03-25 |
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| CNB2004100349733A Expired - Fee Related CN100471798C (en) | 2004-05-01 | 2004-05-01 | Highly effective waste water treatment technique |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844843B (en) * | 2010-06-03 | 2011-12-21 | 友达光电股份有限公司 | Multi-stage wastewater treatment and recovery device |
| CN103648988B (en) * | 2011-03-16 | 2016-01-20 | 索尔维投资有限公司 | For the method for biological sewage treatment |
| CN102295384B (en) * | 2011-06-16 | 2013-04-03 | 博瑞德（南京）净化技术有限公司 | 1,4-butanediol chemical waste water treatment technology |
| CN102863078B (en) * | 2012-10-16 | 2013-10-02 | 山东省环境保护科学研究设计院 | Method for treating chemical industrial wastewater |
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2004
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Non-Patent Citations (2)
| Title |
|---|
| 上海城市污水化学生物絮凝处理的试验. 夏四清，吴志平，杨殿海，高廷耀.同济大学学报，第31卷第9期. 2003 |
| 上海城市污水化学生物絮凝处理的试验. 夏四清，吴志平，杨殿海，高廷耀.同济大学学报，第31卷第9期. 2003 * |
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| CN1689993A (en) | 2005-11-02 |
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