CN1061949C - Comprehensive effluent disposal technology for wet spinning acrylic fibers industry - Google Patents
Comprehensive effluent disposal technology for wet spinning acrylic fibers industry Download PDFInfo
- Publication number
- CN1061949C CN1061949C CN 97107031 CN97107031A CN1061949C CN 1061949 C CN1061949 C CN 1061949C CN 97107031 CN97107031 CN 97107031 CN 97107031 A CN97107031 A CN 97107031A CN 1061949 C CN1061949 C CN 1061949C
- Authority
- CN
- China
- Prior art keywords
- waste water
- acrylic fibers
- water
- wet spinning
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Biological Treatment Of Waste Water (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The present invention discloses a comprehensive waste water treatment technology for acrylic fiber industry of wet spinning. In the technology, waste water is divided into three flows according to the characteristics of the quality of waste water in acrylic fiber industry; the polymerized waste water is treated by a coagulation air flotation method; after the waste water recovered from spinning is treated by a biological contact oxidation method, the two flows of treated waste water are mixed with waste water of acrylonitrile sodium cyanide so as to carry out A/O biochemical denitrogenation treatment; and consequently, the purpose of removing CODcr, NaSCN, NH3-N and other pollutants from the waste water is reached.
Description
The present invention relates to the treatment process of a kind of waste water or sewage, a kind of acrylic fibers industry integrated waste water treatment method of more specifically saying so.
Nitrilon waste water can be divided into vinyl cyanide Sodium Cyanide Production waste water and acrylic fiber factory effluent two parts.Vinyl cyanide sodium cyanide waste water comprises outside the production equipment waste water such as propionitrile, sodium cyanide, also comprises acetonitrile, tank field, tank car washing and life chemical examination and ground wash-down water etc.This waste water reclaims in factory, and after the pre-treatment such as High Temperature High Pressure decomposing oxidation, burning, prussiate and vinyl cyanide hexyl are originally removed in the water, but CODcr concentration is still higher in the sewage, except that containing a small amount of AN, CN, also contains a large amount of NaCl, (NH in the waste water
4)
2SO
4, Na
2SO
4, NaHCO
3Deng.The wet spinning acrylic fibers factory effluent that with NaSCN is solvent mainly comes auto-polymerization deaeration vacuum jet pump discharge water, waste water at the bottom of the solvent recuperation extraction tower, and evaporation condensed water and other wash-down water are reclaimed in precipitation bath.According to drainage features, acrylic fiber production wastewater can be divided into polymerization waste water and spinning again and reclaim waste water, the feature of polymerization waste water is that CODcr concentration is higher, contain a large amount of AN, B-sodium allylsulfonate, oligopolymer etc., the feature that waste water is reclaimed in spinning is that CODcr concentration is relatively low, but contains a large amount of NaSCN.
The main acrylic fiber production process producer sewage water treatment method of domestic a few family is as follows:
1, Acrylic Fibers Plant A: produce 50000 tons of wet spinning acrylic fibers per year
The sewage disposal main flow is the tower biological filter, and 4 meters of tower diameters are high 23 meters, totally 6.Honeycomb hole filter plate number layer is housed in the tower, and tower has the settling tank that catchments.Acrylon sewage sprays through lift pump to cat head, per hour handles water yield 400m
3This device builds up the back and cooperates with Beijing institute of microbiology, has inoculated through experimental study for many years, and the mixed bacterium SAT-13 of artificial culture seed selection and No. 11 bacterial classifications are to implement the industrial treatment to Nitrilon waste water.This treatment unit moves for many years continuously, after this handles, treat effluent CODcr concentration can be reduced to about 400mg/L by 900mg/L, but NaSCN does not have removal effect, water outlet hydrogen nitrogen raises, treat effluent must through the head factory sewage-farm further with other trade effluent mixing biochemical treatment after can qualified discharge.In this device, the SAT-13 bacterial classification does not play its due NaSCN of removing effect.The characteristics of this technology are that technology is simple, and operation is convenient, vinyl cyanide clearance height.Shortcoming is that the NaSCN biological degradation lags behind owing to organic content in the composite waste is higher, and the SAT-13 bacterial classification runs off, and the processing residence time is too short, and NaSCN and NH3-N do not obtain removing.
2, Acrylic Fibers Plant B: produce 50000 tons of vinyl cyanide per year
The sewage disposal main flow is a soft-filler biomembrance process A/O system.Sewage promptly enters the A/O biochemistry pool and handles after simple even matter is regulated, waste water COD cr can reduce to 500～1000mg/L by 1000～2000mg/L after treatment.The characteristics of this technology are that technology is simple, can remove quantity of organic, but because vinyl cyanide sodium cyanide waste water individual curing biochemical degradation is difficult, and contain ammonia nitrogen in high density, so treat effluent is not up to standard.
3, Acrylic Fibers Plant C1 produces 50000 tons of wet spinning acrylic fibers, 50,000 tons of vinyl cyanide per year
The sewage disposal main flow is the pure oxygen aeration biochemical treatment apparatus.Sewage enters the pure oxygen aeration pond and handles after even matter pond is regulated, discharge through post precipitation then.This treatment unit moves the several years continuously, because the factory effluent variation water quality is too big, treat effluent is defective always.Therefore this device treat effluent is to be discharged to earlier near the big small lake, stores some months, relies on the ecology degraded or the dilution in rainy season of the Nature, is discharged to Song Hua River then.For solving treat effluent problem up to standard, this factory once tackled problems year March in February, 90 to 91, and employing adds TD1 (removal CN
-), DT2 (removes SCN
-) special bacterial classification, carry out the continuous production pure oxygen aeration and handled experiment, the result thinks, under the best situation, the also inaccessible emission standard less than 100mg/L of treat effluent CODcr, and only short-term is effective to take to add special bacterial classification is cultivated when wanting to keep treatment effect and taking and is added bacterial classification, management expectancy strictness, and CN
-, SCN
-Impact treatment unit is still influenced very big.The characteristics of this technology are pure oxygen processing efficiency height, but because the processing hydraulic detention time is too short, and technology itself also can't be carried out denitrogenation processing, so be difficult to realize that treat effluent is up to standard, this factory is carrying out the transformation of water technology at present.
4, Acrylic Fibers Plant D: produce 2.3 ten thousand tons of acrylic fibre with wet-process per year, sewage disposal is the industrial production testing apparatus, only handles acrylic fiber production equipment waste water.Main flow is the A/O biomembrance process, adopts soft cellulose filler, hydraulic detention time 24 hours, but equal qualified discharges such as treat effluent CODcr, NH3-N, AN.But its water inlet average N aSCN is 18.6mg/L only.
5, Acrylic Fibers Plant E: produce 0.75 ten thousand ton of acrylic fibre with wet-process per year
The sewage disposal main flow adopts the activated sludge process table to expose to the sun-the embrane method catalytic oxidation, only handles acrylic fiber production equipment waste water.Waste water COD cr by recirculation water dilution 800-1000mg/L, enters biochemical treatment system earlier again, handles back water outlet CODcr concentration at 150-200mg/L, the about 150mg/L of ammonia nitrogen concentration.Employing TD1 in service and the special bacterial classification of TD2, but treatment effect is unsatisfactory, and treat effluent fails to reach international emission standard, and the characteristics of this technology are to have adopted the Two-Stage Biochemical processing, and adopting special bacterial classification at NaSCN, shortcoming is not high for combined sewage NaSCN processing efficiency.
Therefore, in sum, can think:
(1), the processing of Nitrilon waste water is at present still based on biological treatment, realize but directly handle up to standard failing;
(2), the reason of throwing bacterium method industrial treatment Nitrilon waste water poor effect is that water quality environment is to the NaSCN degradation bacteria of autotrophic type and the organism of heterotroph (as AN etc.) degradation bacteria flora quantity and active influence;
(3) if, at present acrylon sewage industrial treatment device reckons without the removal problem of the ammonia nitrogen that is produced by biological process;
(4), CODcr, NaSCN, NH3-N are acrylon sewage biochemical treatment keys up to standard.The purpose of this invention is to provide a kind of comprehensive effluent disposal technology for wet spinning acrylic fibers industry,, reach the purpose of pollutents such as removing CODcr, NH3-N by waste water segmentation classification is handled.
The objective of the invention is to be achieved through the following technical solutions.
A kind of wet spinning acrylic fibers industry integrated waste water treatment method, it is characterized in that earlier polymerization workshop section waste water in the acrylic fiber production process device being carried out mixed condensed gas flotation process handles, spinning recycle section waste water carries out bio-contact oxidation to be handled, with above-mentioned two strands of treated waste water and vinyl cyanide, sodium cyanide, ammonium sulfate production equipment waste water, plant area's sanitary sewage, the ground wash-down water mixes, and carries out the A/O biological denitrificaion and handles, and discharges supernatant liquor at last.
Vinyl cyanide, sodium cyanide, ammonium sulfate production equipment waste water, plant area's sanitary sewage, before ground wash-down water and other two strands of waste water mix, solid matters such as floating matter in the employing grid settling pit removal waste water and sand.
The mixed condensed gas flotation process treating processes is: poly-platform workshop section waste water is regulated PH=6～8 through even matter equalizing tank, adds flocculation agent again, handles part suspended matter and the oligopolymer of removing in the waste water through the sewage air-flotation treatment unit then.
Bio-contact oxidation is handled and is meant that spinning recycle section waste water is through even matter equalizing tank, regulate PH=6～9, again in waste water CoDcr: P=100: 0.4～0.8 ratio adds microcosmic salt, handle through the biological contact oxidation pond aeration biochemical then, make the NaSCN in the waste water change into NH3-N, biological contact oxidation pond adopts soft cellulose filler.
The A/O biological denitrificaion is handled the activated sludge process A/O biochemical treatment that is meant Prepositive denitrification.
Described flocculation agent is meant poly-iron or polymeric aluminum molysite, dosage 20～100mg/L waste water.
Bio-contact oxidation treating processes control condition is:
Influent load: 0.74～1.36Kg NaSCN/m
3My god
Water temperature＜40 ℃
Water inlet PH=6～7
Contact-oxidation pool dissolved oxygen DO 3～4mg/L
The activated sludge process A/O biochemical treatment of Prepositive denitrification is meant that three strands of waste water mix through even matter equalizing tank, add molysite by every liter of waste water 3.5～7mgFe then, in CODcr: P=100: 0.4～0.6 ratio adds microcosmic salt, by 250～300mg CaCO in every liter of waste water
3The amount of meter basicity adds NaHCO
3Or NaOH, waste water enters anoxic biochemistry pool, aerobic biochemical pond successively then, secondary sedimentation basins,
Its control condition is:
Anoxic/aerobic biochemical pool volume was than 1: 3
Influent load: the CODcr 0.6～0.8Kg/m that loads
3My god
NH3-N 0.04～the 0.05Kg/m that loads
3My god
TN 0.08～the 0.09Kg/m that loads
3My god
20～30 ℃ of water temperatures
Water inlet PH=7～8
Reaction tank dissolved oxygen anoxic lacks＜0.2mg/L
Aerobic Pond＞2mg/L
Sludge concentration 3～5g/L
Reflux ratio: mixed solution 2.5～3.5
Secondary sedimentation basins 0.5～1
Through the acrylic fibers industry comprehensive wastewater of art breading of the present invention, CODcr, BOD
5, NaSCN, AN, NH3-N, TN can remove 95%, 99%, 99%, 100%, 85%, 70% respectively, the whole indexs of treat effluent can reach national composite wastewater discharging GB8978-88 first discharge standard.
Technology point of the present invention:
1, the ammonification of NaSCN processing is one of gordian technique in this technology, the domestic precedent of still not having independent industrial treatment NaSCN waste water.Find in this technical study, when the microorganism in the Nitrilon waste water biochemical treatment system contains large amount of organic in waste water, the degraded of NaSCN is had " hysteresis " effect, and when containing a small amount of organism in the waste water, the degraded of NaSCN can high-level efficiency be carried out.Therefore, this technology reclaims waste water with spinning and lists separately to handle and remove NaSCN.After spinning recovery waste water was listed separately, its NaSCN content accounted for more than 95% of NaSCN content in total mixing water, and the CODcr that is made of organism in the waste water accounts for 30%, carried out the NaSCN ammonification separately and handled more satisfactory.After handling, this has played keying action to shortening the follow-up biochemical treatment time.
2, in this technology, it also is one of gordian technique that the ammonia nitrogen removal of total mixing water is handled, the domestic precedent of still not having employing mud method A/O biochemical treatment system processing acrylic fibers industry comprehensive wastewater.Proposing to add in the A/O pond molysite in this technical study moves under the state of higher concentration, reduces and that suspension content has great role in the flowing water guaranteeing the biochemical system active sludge.Comparison test is the result show: add the iron biochemical process and can make treatment system that CODcr and NH3-N clearance are improved about 10%.
The characteristics of technology of the present invention and advantage:
1, adopt the biochemical flow processing vinyl cyanide of biochemical pre-treatment-mud method A/O, sodium cyanide, Nitrilon waste water to have the simple and direct practicality of flow process, reliable, the high characteristics of removal efficient of treatment effect, to CODcr, NaSCN, AN, NH3-N etc., can realize that treat effluent all reaches first discharge standard among the GB8978-88.
2, the acrylic spinning recovery waste water that height is contained NaSCN carries out biochemical pre-treatment separately, except that oxidation " inhibition " effect that can avoid organism such as other sewage middle and high concentration AN to NaSCN, also can keep enabling environment because of the relatively stable autotrophic type NaSCN oxidation bacterium dominant growth that forms of water-quality constituents, do not need special cultivation, add special bacterial classification, also can avoid throwing the bacterium method when handling acrylic fibers and mixing platform sewage because hydraulic detention time is too short, relatively variation water quality is too big, and the NaSCN biochemical degradation causes bacterial classification to run off than factors such as other organic matter degradation hysteresis such as AN and need often add the contradiction of the special bacterial classification of NaSCN oxidation.
3, acrylic spinning reclaims waste water NaSCN after pre-treatment ammonification of degrading substantially, therefore, have a negative impact to the biological nitration of follow-up A/O system is unlikely, poly-platform waste water also will produce long-pending level effect to follow-up biochemical treatment after a large amount of oligomer particles are removed in the air supporting pre-treatment again.
4, acrylic spinning reclaims waste water after biochemical pre-treatment, again with vinyl cyanide, and sodium cyanide, the poly-platform waste water of acrylic fibers mixes, and its mixing water CODcr/N ratio still is 6.3-7.8, and Prepositive denitrification A/O flow process is adopted in test, do not need additionally to add again carbon source, just can carry out biological denitrificaion and handle, more satisfactory.
5, acrylic spinning reclaims waste water after biochemical pre-treatment, with respect to without pre-treatment, owing to significantly reduced CODcr (particularly NaSCN) load of subsequent disposal, therefore can make the hydraulic detention time of mud method A/O biochemical treatment system reduce 10 hours at least, also reduce by 19% reaction tank cubic capacity even be equivalent to add the required reaction tank volume of biochemical pre-treatment; As seen, the concentrated concentration of NaSCN in the waste water is handled, can be saved overall treatment time, improve biochemical treatment efficient and slow down or avoid the shock effect of high density NaSCN the biochemical treatment of A/O pond.
6, acrylic spinning reclaims the wastewater biochemical pre-treatment and has adopted the embrane method mode, test-results shows: adopt embrane method to handle and can make NaSCN oxidation bacterium stably be grown on the filler in a large number, keep higher concentration, thereby make treatment system have higher NaSCN degradation capability, and bookkeeping is easy.As building in nearby near the production equipment discharge of wastewater mouth, can reduce the quantity discharged of waste water NaSCN effectively, also can avoid because of the higher corrosive nature that constitutes of this waste water NaSCN content water discharge line.
7, Prepositive denitrification mud method A/O biochemical system can except that having the high characteristics of biological denitrificaion efficient, also can compensate the basicity of a part because of nitrated loss by the adjusting of reflux ratio being controlled the decreasing ratio of TN; And adopt ChiA/OChi to hold than being 1: 3, at the ammonia nitrogen that produces gradually in the acrylic fibers industry wastewater biochemical treating processes good adaptability is arranged.
8, the vinyl cyanide sodium cyanide waste water of more difficult biochemical treatment and contained ammonia nitrogen thereof can mix with Nitrilon waste water after the pre-treatment through the A/O system handles and qualified discharge.
Present technique also is applicable to the processing up to standard of acrylic fibers vinyl cyanide, oil refining composite waste, and the improvement of domestic waste water of the same type is had directive significance.
Accompanying drawing is a technological process block-diagram of the present invention.
Below in conjunction with accompanying drawing,, the present invention is further described by embodiment.Embodiment: referring to accompanying drawing.1, certain acrylic fiber production process device discharging water quantity and quality table:
| The waste water project | Vinyl cyanide sodium cyanide waste water | Nitrilon waste water | |
| Polymerization waste water | Waste water is reclaimed in spinning | ||
| The water yield | 111(m 3/h) | 230(m 3/h) | 270(m 3/h) |
| PH | 6-9 | 6-9 | 6-9 |
| CODcr | 863(mg/L) | 1614(mg/L) | 477(mg/L) |
| BOD5 | 362(mg/L) | 646(mg/L) | 191(mg/L) |
| (NH4)2SO4 | 312(mg/L) | ||
| NaCl | 152(mg/L) | ||
| Na2SO4 | 374(mg/L) | ||
| NaHCO3 | 1550(mg/L) | ||
| AN | 8.5(mg/L) | 118(mg/L) | |
| NaSCN | 10(mg/L) | 455(mg/L) | |
| CN - | 1(mg/L) | 5.5(mg/L) | |
| Oligopolymer | 145(mg/L) | 29(mg/L) | |
| β-sodium allylsulfonate | 305(mg/L) | 8(mg/L) | |
According to China's composite wastewater emission standard (GB8978-88), institute's sewer should reach following standard:
PH CODcr BOD5 CN
-The NH3-N petroleum-type
6～9 ＜100 ＜30 ＜0.5 ＜15 ＜10
2, polymerization sewage disposal
230 tons/hour of the designing treatment water yields.Sewage is at even matter pond (the volume 1800m of primary treatment station elder generation warp
3) regulate (as very poor advanced equalizing tank (the volume 1800m that also wants of water quality
3) store, slowly carry out fusion and handle, to carry out air supporting again and handle (three air supporting machines, every processing power is 80 tons/hour), design estimates that the oligopolymer clearance is 50%.Sewage is discharged into the second-stage treatment station after the air supporting, and scum silica frost is transported between sludge dewatering by tank car and handles.
Polymerization waste water air supporting pre-treatment
Add medicament: poly-iron;
Dosage: 50-60mg/L
Continuous 8 months average operation treatment effect is:
The oligopolymer mean concns has mean value fluctuation range water inlet 282.25mg/L 159.2-449.5mg/L air supporting treat effluent 155.95mg/L 105.5-224.2mg/L clearance (%) 44.75% 32.8-56.4%
Therefore the air supporting pre-treatment has reached intended purposes substantially, can effectively subdue the oligoacrylonitrile content in the polymerization waste water, for follow-up biochemical treatment provides favourable condition.
3, imitative silk reclaims Wastewater Pretreatment
The designing treatment water yield is 270 tons/hour.The volume of contact-oxidation pool is 4000m
3, hydraulic detention time 14.8 hours, spinning is reclaimed waste water and is at first advanced to spare matter pond (1800m
3), equalizing tank (1800m
3) spare matter and regulate, flowing into contact-oxidation pool again handles, the contact-oxidation pool filler adopts hydroformylation polyvinyl filler, the mode that aeration adopts pressurized air to carry out through the turbulent flow type aeration head, handle back sewage and be discharged into second-stage treatment station combination treatment, design estimate this strand waste water after pre-treatment NaSCN concentration degradable to 85mg/L.
The wastewater biochemical pre-treatment is reclaimed in spinning
Hydraulic detention time: even matter pond 8h;
Equalizing tank 8h;
Contact-oxidation pool 14.8h;
Settling tank 2h; Filler: soft cellulose filler; Influent load: 0.74-1.36Kg NaSCN/m
3.d; Control condition: water temperature＜40 ℃
Water inlet PH 6-7
Add nutritive salt by CODcr: P=100: 0.5 adds microcosmic salt;
Reaction tank DO 3～4mg/L;
The pre-treatment result who measures is:
NaSCN fluctuation of concentration scope water inlet 251mg/L 104-475mg/L pre-treatment water outlet 2.81mg/L 1.23-6.69mg/L clearance 0.8%
Therefore the catalytic oxidation pretreating effect is very good, exceeds the expected design value.
4, A/O biochemical treatment
Composite waste after handle at the primary treatment station has reached the design requirements that enters the second-stage treatment station substantially.The designing treatment ability of B-grade sewage treatment station is 700m
3/ h.From three strands of waste water at primary treatment station, by the even matter pond (5000m of pipe-line transportation to the second-stage treatment station
3) and equalizing tank (5000m
3), through even matter once more, regulate after, in CODcr: P=100: 0.6 ratio is added microcosmic salt (Na
2HPO
4), and add the molysite (FeSO of 3.5-7.0mg Fe/L
4) and replenish a certain amount of basicity (NaOH or NaHCO
3) after, promptly enter the A/O biochemical treatment tank and handle.Organism in Aerobic Pond oxidation removal waste water also makes NH3-N be oxidized to nitric nitrogen, be back to anoxic pond then, microorganism partial organic substances in the oxidized waste water and make nitrate-nitrogen reduction become nitrogen and from water, deviate under anoxic condition, thus reach the purpose of removing water pollutant.
The A/O biochemical denitrification is handled
Hydraulic detention time: even matter pond 8h;
Equalizing tank 8h;
A/O biochemistry pool 30h;
Settling tank 2h;
A/O pool volume ratio: 1: 3
Influent load: the CODcr 0.6-0.8Kg/m that loads
3.d;
NH3-N load 0.04-0.05 Kg/m
3.d;
TN load 0.08-0.09 Kg/m
3.d;
Control condition: water temperature 20-30 ℃
Water inlet PH 7-8;
Add nutritive salt by CODcr: P=100: 0.6 adds microcosmic salt;
Reaction tank DO A pond＜0.2mg/L (liquid stirs down);
Sludge concentration 3～5g/L (MLSS); Dosing 5mg Fe/L waste water (, adding ferrous sulfate) in iron
Adding NaOH to improve waste water basicity (lime carbonate) is
250-300mg/L; Reflux ratio 400% (wherein, the terminal return current ratio of the mixed liquid in O pond is 300%,
The second pond return sludge ratio is 100%, all is back in the A pond); Acrylon sewage draining water quality after treatment is as follows: PH CODcr BOD5 AN CN
-6.89 88.3 39.9＜0.003＜0.007 (6.54-7.35) are (28.5-51.4) (0.002-0.012) NH3-N SCN (64.2-102)
-Acetonitrile petroleum-type 14.0 0.449＜0.003 2.14 (10.8-19.0) is (1.39-2.41) (0.282-0.897)
Therefore, the sewage-farm is reliable, and is respond well, water outlet PH, CODcr, acetonitrile, AN, NH3-N, CN
-, petroleum-type, SCN
-All up to standard; Mud is fully utilized after press filtration; The NaSCN clearance occupies domestic top standard of the same trade in the waste water.
Claims (7)
1, a kind of wet spinning acrylic fibers industry integrated waste water treatment method, it is characterized in that earlier polymerization workshop section waste water in the acrylic fiber production process device being carried out mixed condensed gas flotation process handles, spinning recycle section waste water carries out bio-contact oxidation to be handled, part by weight by waste water COPcr: P=100: 0.4-0.8 in biological contact oxidation pond adds microcosmic salt, with above-mentioned two strands of treated waste water and vinyl cyanide, sodium cyanide, ammonium sulfate production equipment waste water, plant area's sanitary sewage, the ground wash-down water mixes, carrying out the A/O biological denitrificaion handles, it is the activated sludge process A/O biochemical treatment of Prepositive denitrification that the A/O biological denitrificaion is handled, waste water before denitrogenation processing by COPcr: the part by weight of P=100: 0.4-0.6 adds microcosmic salt, add molysite by every liter of waste water 3.5-7mgFe, by every liter of waste water 250-300mg CaCO
3The amount of meter basicity adds NaHCO
3Or NaOH, discharge supernatant liquor at last.
2, a kind of wet spinning acrylic fibers industry integrated waste water treatment method according to claim 1, it is characterized in that vinyl cyanide, sodium cyanide, ammonium sulfate production equipment waste water, plant area's sanitary sewage, before ground wash-down water and other two strands of waste water mix, solid matters such as floating matter in the employing grid settling pit removal waste water and sand.
3, a kind of wet spinning acrylic fibers industry integrated waste water treatment method according to claim 1, it is characterized in that the mixed condensed gas flotation process treating processes is: polymerization workshop section waste water is through even matter equalizing tank, regulate PH=6-8, add flocculation agent again, handle part suspended matter and the oligopolymer of removing in the waste water through the sewage air-flotation treatment unit then.
4, a kind of wet spinning acrylic fibers industry integrated waste water treatment method according to claim 1, it is characterized in that the bio-contact oxidation processing is meant that spinning recycle section waste water is through even matter equalizing tank, regulate PH=6-9, after the biological contact oxidation pond aeration biochemical was handled, the NaSCN in the waste water changed into NH
3-N, biological contact oxidation pond adopts soft cellulose filler.
5, a kind of wet spinning acrylic fibers industry integrated waste water treatment method according to claim 4 is characterized in that bio-contact oxidation treating processes control condition is: influent load: 0.74～1.36Kg NaSCN/m
3My god
Water temperature＜40 ℃
Water inlet PH=6～7
Contact-oxidation pool dissolved oxygen DO 3～4mg/L
6, a kind of wet spinning acrylic fibers industry integrated waste water treatment method according to claim 1, it is characterized in that in the activated sludge process A/O biochemical treatment process of Prepositive denitrification, waste water mixes through even matter equalizing tank earlier, waste water behind the delivering medicament enters anoxic biochemistry pool, aerobic biochemical pond successively, secondary sedimentation basins
Its control condition is:
Anoxic/aerobic seriation pool volume was than 1: 3
Influent load: the CODcr 0.6～0.8Kg/m that loads
3My god
NH3-N 0.04～the 0.05Kg/m that loads
3My god
TN 0.08～the 0.09Kg/m that loads
3My god
20～30 ℃ of water temperatures
Water inlet PH=7～8
Reaction tank dissolved oxygen anoxic pond＜0.2mg/L
Aerobic Pond＞2mg/L
Sludge concentration 3～5g/L
Reflux ratio: mixed solution 2.5～3.5
Secondary sedimentation basins 0.5～1
7, a kind of wet spinning acrylic fibers industry integrated waste water treatment method according to claim 3 is characterized in that described flocculation agent is meant poly-iron or polymeric aluminum molysite, dosage 20～100mg/L waste water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97107031 CN1061949C (en) | 1997-07-04 | 1997-07-04 | Comprehensive effluent disposal technology for wet spinning acrylic fibers industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97107031 CN1061949C (en) | 1997-07-04 | 1997-07-04 | Comprehensive effluent disposal technology for wet spinning acrylic fibers industry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1188743A CN1188743A (en) | 1998-07-29 |
| CN1061949C true CN1061949C (en) | 2001-02-14 |
Family
ID=5169223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97107031 Expired - Fee Related CN1061949C (en) | 1997-07-04 | 1997-07-04 | Comprehensive effluent disposal technology for wet spinning acrylic fibers industry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1061949C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101423312B (en) * | 2007-10-31 | 2012-05-30 | 中国石油化工股份有限公司 | Acrylon production waste water treatment method |
| CN101428947B (en) * | 2008-12-18 | 2012-12-26 | 南京中电环保股份有限公司 | Advanced treatment method for acrylic fibre wet-process industrial wastewater with two-step method |
| CN102557328B (en) * | 2010-12-10 | 2015-03-18 | 新奥科技发展有限公司 | Coal gasification wastewater processing method |
| CN102642986A (en) * | 2012-04-20 | 2012-08-22 | 上海化学工业区中法水务发展有限公司 | Method and device for treating organic cyanide wastewater |
| CN102795740B (en) * | 2012-04-24 | 2013-12-04 | 华东理工大学 | High-efficiency denitrification method of acrylonitrile production wastewater |
| CN103663840B (en) * | 2012-09-04 | 2016-05-11 | 中国石油天然气股份有限公司 | The processing method of a kind of acrylonitrile and polymerization waste water thereof |
| CN105271605B (en) * | 2014-07-11 | 2017-08-29 | 中国石油化工股份有限公司 | The processing method of acrylic nitrile waste water |
| CN105060462B (en) * | 2015-07-24 | 2018-11-27 | 张振慧 | A kind of tower biological filter |
| CN105712585A (en) * | 2016-04-15 | 2016-06-29 | 中国环境科学研究院 | Method for treating waste water and recycling resources in acrylic fiber production |
-
1997
- 1997-07-04 CN CN 97107031 patent/CN1061949C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1188743A (en) | 1998-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102276107B (en) | Acrylic fiber sewage treatment technology through PHAOB method | |
| CN106746175A (en) | A kind of kitchen garbage, waste-water processing method | |
| CN101525207A (en) | Integrated pre-denitrification and denitrogenation biological filter sewerage treatment process | |
| CN201952322U (en) | Anaerobic micropore aeration oxidation ditch reactor | |
| CN104773930B (en) | Semi-coke waste water treatment system and technology | |
| CN106430845A (en) | Kitchen garbage wastewater treatment apparatus | |
| CN102001787A (en) | Anaerobic microporous aerator oxidation ditch reactor and sewage treatment method | |
| CN1539762A (en) | Sewage treatment appts. using self-granulating active sludge and sewage treatment process | |
| CN102153239A (en) | Process and system for carrying out high-efficiency denitrification and dephosphorization treatment on urban sewage | |
| CN106396258A (en) | Technological method for treating coking wastewater | |
| CN106396282A (en) | Kitchen waste paste anaerobic fermentation wastewater treatment device | |
| CN1948184A (en) | Control method and device of A2/O oxidation trench technology synchronous nitration and denitrification | |
| CN108328871A (en) | Landfill leachate efficient denitrification system and its denitrification process | |
| CN1164513C (en) | Method for treating acrylonitrile and acrylic waste water | |
| CN1300015C (en) | Denitrogenation technique for waste water containing high concentration ammonia nitrogen | |
| CN103449684A (en) | High-toxicity coking phenol-cyanogen waste water recycling system and method | |
| CN104973688A (en) | Anaerobic-aerobic bio-filter coupled sewage processing device and sewage processing method | |
| CN1061949C (en) | Comprehensive effluent disposal technology for wet spinning acrylic fibers industry | |
| CN1277942A (en) | System for treatment of water or wastewater, and method using such system | |
| KR101678202B1 (en) | Leachate treatment system for waste landfill | |
| CN109020051A (en) | Landfill leachate wastewater treatment system and method | |
| CN218810847U (en) | AAO sewage treatment system of improvement | |
| CN1170784C (en) | Dry nitrilon waste water treating process | |
| CN111252994A (en) | Domestic fungus wastewater treatment method | |
| KR20010045253A (en) | Advanced method for treating wastewater and apparatus therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |