CN104961293A - Coupling treatment method of AO novel printing and dyeing wastewater - Google Patents
Coupling treatment method of AO novel printing and dyeing wastewater Download PDFInfo
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- CN104961293A CN104961293A CN201510314220.6A CN201510314220A CN104961293A CN 104961293 A CN104961293 A CN 104961293A CN 201510314220 A CN201510314220 A CN 201510314220A CN 104961293 A CN104961293 A CN 104961293A
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Abstract
The invention relates to a coupling treatment method of AO novel printing and dyeing wastewater, and belongs to the technical field of printing and dyeing wastewater treatment. The method comprises the following steps: printing and dyeing wastewater enters a hydrolysis-acidification tank, averagely stays for 10-18h and are divided into two parts, and the two parts respectively enter a mid-sedimentation tank and an aeration tank; facultative sludge obtained through a reaction in the mid-sedimentation tank flows back to the hydrolysis-acidification tank, water from the hydrolysis-acidification tank directly reacts with water distributed by the hydrolysis-acidification tank in the aeration tank for 15-25h, and obtained water is sent to a sedimentation tank; and water obtained after a reaction in the sedimentation tank is directly discharged, obtained aerobic sludge is divided into two parts, and the two parts of the aerobic sludge respectively flow back to the aeration tank and the hydrolysis-acidification tank and participate in corresponding reactions. The method used for treatment of comprehensive printing and dyeing wastewater has the advantages of low cost, short treatment time and obvious treatment effect, improves the COD removal rate by above 10%, and allows the nitrogen content and the phosphorus content of finally discharged water to be respectively lower than standards.
Description
Technical field
The present invention relates to a kind of method of new A O coupling technique treatment of dyeing and printing, belong to dyeing waste water technical field.
Background technology
Many containing nitrogen phosphoric in waste water from dyestuff, in the treatment of waste water, A/O method is used widely, and as anaerobic technique, develops multiple anaerobic reactor, as EGSB, ABR, UASB, IC etc.; For acidication, derive multiple reactor for hydrolysis and acidification type; For denitrogenation dephosphorizing, develop the treatment process with denitrogenation dephosphorizing function; But along with the maturing of dyeing and printing process, the composition of dyeing waste water becomes increasingly complex, and the A/O method of routine adopts is the mode of one section of anaerobism, one section of oxygen enrichment, and anaerobism section is used for denitrogenation dephosphorizing; Aerobic section is for the organism in dewatering.Although this traditional mode reaches certain denitrogenation dephosphorizing function, effect is not remarkable, and especially for dyeing synthetic wastewater, its action effect is particularly not obvious, and traditional A/O method cannot meet the demand of water treatment.
Based on this, make subject application.
Summary of the invention
In order to overcome existing for existing A/O method denitrogenate that efficiency is low, the defect such as processing load is large, COD content is high, the invention provides a kind of method of new A O coupling technique treatment of dyeing and printing of Absorbable organic halogens high-efficient denitrification and dephosphorization.
For achieving the above object, the technical scheme taked of the present invention is as follows:
The method of new A O coupling technique treatment of dyeing and printing, the treatment unit that above-mentioned dyeing and printing sewage adopts is made up of hydrolysis acidification pool, medium sediment pool, aeration tank and settling tank, described hydrolysis acidification pool gallery is broken-line type structure, installs agitator and stir along its reaction tank diagonal lines in it; In described aeration tank, several aeration heads are installed, and hydrolysis acidification pool and aeration tank are pulling flow type reaction tank; Dyeing waste water enter hydrolysis acidification pool and averaged residence (HRT) wherein for after 10-18 hour, point two portions enter medium sediment pool and aeration tank respectively; React gained in medium sediment pool and hold concurrently oxygen sludge reflux in hydrolysis acidification pool, medium sediment pool water outlet directly enters together with the sewage that distributes with hydrolysis acidification pool reacts for after 15-25 hour in aeration tank, sends into settling tank; Settling tank reaction water outlet is directly discharged, and the aerobic sludge of reaction gained then divides two portions to be back to aeration tank and hydrolysis acidification pool respectively, participates in reacting accordingly.
Further, as preferably:
The allocation proportion of described hydrolysis acidification pool water outlet is: medium sediment pool accounts for 2/3 of total inflow, and aeration tank accounts for 1/3 of total inflow.
The reflux ratio of described double oxygen mud is 60-80%.
The total reflux ratio of described aerobic sludge is 60-80%, and wherein 2/3 enter hydrolysis acidification pool, 1/3 enters aeration tank.
The present invention is directed to dyeing synthetic wastewater, develop above-mentioned new A O coupling technique, by the backflow of different steps water outlet and the backflow of dissimilar mud, in sewage disposal simultaneously, the quality of sewage is carried out homogenize repeatedly, and utilize oxygen mud of holding concurrently, the character of characteristic to sewage of aerobic sludge self is improved in advance, from water quality, multiple angle such as water balance carries out comprehensive treating process to sewage, both the effect of acidication technique had been played, well reach wastewater treatment usefulness, be better than the treatment efficiency that common oxidation ditch underload treatment process can reach, not only save a large amount of oxidation ditch capital costs, also total wastewater treatment time is substantially reduced, there is again denitrogenation dephosphorizing function simultaneously, the double oxygen (and acidication bacterium) of above-mentioned technique coupling is aerobic, the microorganism synergies such as nitrated denitrogenation dephosphorizing, therefore treatment effect is obvious, be applicable to the wastewater treatment of printing and dyeing class.
With traditional AO technics comparing, COD clearance can promote more than 10%; Bio-chemical effluent ammonia nitrogen is within 3mg/L, and clearance is greater than 95%; Within bio-chemical effluent total nitrogen is stabilized in 9mg/L, clearance 80%; Bio-chemical effluent total phosphorus is within 0.5mg/L, and clearance is greater than 70%, is better than the treatment effect of oxidation ditch underload technique.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Number in the figure: 1. hydrolysis acidification pool; 2. medium sediment pool; 3. aeration tank; 4. settling tank.
Embodiment
Embodiment 1
The method of the present embodiment new A O coupling technique treatment of dyeing and printing, composition graphs 1, the equipment that this technique adopts is made up of hydrolysis acidification pool 1, medium sediment pool 2, aeration tank 3 and settling tank 4, the gallery of described hydrolysis acidification pool 1 is broken-line type structure, install agitator in it, this agitator stirs along the diagonal lines of hydrolysis acidification pool 1; In aeration tank 3, several aeration heads are installed, and hydrolysis acidification pool 1 and aeration tank 3 are pulling flow type reaction tank.
Aforesaid device is adopted to process integrated printing and dyeing waste water: dyeing waste water enters hydrolysis acidification pool 1, sewage averaged residence wherein (HRT) is after 13 hours, hydrolysis acidification pool 1 goes out moisture two portions: 2/3 enters medium sediment pool 2, and remaining 1/3 directly enters aeration tank 3; After sewage reacts in medium sediment pool 2, at the bottom of medium sediment pool 2 pond, the double oxygen sludge reflux of precipitation is in hydrolysis acidification pool 1, and according to Production requirement, the reflux ratio of oxygen mud of holding concurrently is 60-80%; The sewage that medium sediment pool 2 water outlet then converges hydrolysis acidification pool 1 directly enters aeration tank 3 together, and the mean residence time of this part of contaminated water in aeration tank 3 is 19 hours, and settling tank 4 is sent in aeration tank 3 water outlet; Settling tank 4 reacts water outlet and directly discharges, and the aerobic sludge of settling tank 4 bottom settlings refluxes, its control of reflux ratio, at 60-80%, wherein 1/3 is back to aeration tank 3, remaining 2/3 is directly back to hydrolysis acidification pool 1, carries out combined reaction together with the sewage of corresponding position.Wherein the load of medium sediment pool 2 and settling tank 4 is determined according to actual production and existing engineering of water treatment design specifications.
The present embodiment is for dyeing synthetic wastewater, develop above-mentioned new A O coupling technique, by the backflow of different steps water outlet and the backflow of dissimilar mud, in sewage disposal simultaneously, the quality of sewage is carried out homogenize repeatedly, and utilize oxygen mud of holding concurrently, the character of characteristic to sewage of aerobic sludge self is improved in advance, from water quality, multiple angle such as water balance carries out comprehensive treating process to sewage, both the effect of acidication technique had been played, well reach wastewater treatment usefulness, be better than the treatment efficiency that common oxidation ditch underload treatment process can reach, not only save a large amount of oxidation ditch capital costs, also total wastewater treatment time is substantially reduced, there is again denitrogenation dephosphorizing function simultaneously, the double oxygen (and acidication bacterium) of above-mentioned technique coupling is aerobic, the microorganism synergies such as nitrated denitrogenation dephosphorizing, therefore treatment effect is obvious, be applicable to the wastewater treatment of printing and dyeing class.
With traditional AO technics comparing, the integrated printing and dyeing waste water after the present embodiment process, its COD clearance can promote more than 10%; Bio-chemical effluent ammonia nitrogen is within 3mg/L, and clearance is greater than 95%; Within bio-chemical effluent total nitrogen is stabilized in 9mg/L, clearance 80%; Bio-chemical effluent total phosphorus is within 0.5mg/L, and clearance is greater than 70%, is better than the treatment effect of oxidation ditch underload technique.
Embodiment 2
The method of the present embodiment new A O coupling technique treatment of dyeing and printing, composition graphs 1, the equipment that this technique adopts is identical with embodiment 1, difference is: dyeing waste water enters hydrolysis acidification pool 1, sewage averaged residence wherein (HRT) is after 15 hours, hydrolysis acidification pool 1 goes out moisture two portions: 2/3 enters medium sediment pool 2, and remaining 1/3 directly enters aeration tank 3; After sewage reacts in medium sediment pool 2, at the bottom of medium sediment pool 2 pond, the double oxygen sludge reflux of precipitation is in hydrolysis acidification pool 1, and according to Production requirement, the reflux ratio of oxygen mud of holding concurrently is 65-70%; The sewage that medium sediment pool 2 water outlet then converges hydrolysis acidification pool 1 directly enters aeration tank 3 together, and the mean residence time of this part of contaminated water in aeration tank 3 is 25 hours, and settling tank 4 is sent in aeration tank 3 water outlet; Settling tank 4 reacts water outlet and directly discharges, and the aerobic sludge of settling tank 4 bottom settlings refluxes, its control of reflux ratio, at 60-65%, wherein 1/3 is back to aeration tank 3, remaining 2/3 is directly back to hydrolysis acidification pool 1, carries out combined reaction together with the sewage of corresponding position.Wherein the load of medium sediment pool 2 and settling tank 4 is determined according to actual production and existing engineering of water treatment design specifications.
Integrated printing and dyeing waste water after the present embodiment process, its COD clearance can promote more than 10%; Bio-chemical effluent ammonia nitrogen is within 3mg/L, and clearance is greater than 95%; Within bio-chemical effluent total nitrogen is stabilized in 9mg/L, clearance 80%; Bio-chemical effluent total phosphorus is within 0.5mg/L, and clearance is greater than 70%, is better than the treatment effect of oxidation ditch underload technique.
Embodiment 3
The method of the present embodiment new A O coupling technique treatment of dyeing and printing, composition graphs 1, the equipment that this technique adopts is identical with embodiment 1, difference is: dyeing waste water enters hydrolysis acidification pool 1, sewage averaged residence wherein (HRT) is after 11 hours, hydrolysis acidification pool 1 goes out moisture two portions: 2/3 enters medium sediment pool 2, and remaining 1/3 directly enters aeration tank 3; After sewage reacts in medium sediment pool 2, at the bottom of medium sediment pool 2 pond, the double oxygen sludge reflux of precipitation is in hydrolysis acidification pool 1, and according to Production requirement, the reflux ratio of oxygen mud of holding concurrently is 75-80%; The sewage that medium sediment pool 2 water outlet then converges hydrolysis acidification pool 1 directly enters aeration tank 3 together, and the mean residence time of this part of contaminated water in aeration tank 3 is 15 hours, and settling tank 4 is sent in aeration tank 3 water outlet; Settling tank 4 reacts water outlet and directly discharges, and the aerobic sludge of settling tank 4 bottom settlings refluxes, its control of reflux ratio, at 75-80%, wherein 1/3 is back to aeration tank 3, remaining 2/3 is directly back to hydrolysis acidification pool 1, carries out combined reaction together with the sewage of corresponding position.Wherein the load of medium sediment pool 2 and settling tank 4 is determined according to actual production and existing engineering of water treatment design specifications.
Integrated printing and dyeing waste water after the present embodiment process, its COD clearance can promote more than 10%; Bio-chemical effluent ammonia nitrogen is within 3mg/L, and clearance is greater than 95%; Within bio-chemical effluent total nitrogen is stabilized in 9mg/L, clearance 80%; Bio-chemical effluent total phosphorus is within 0.5mg/L, and clearance is greater than 70%, is better than the treatment effect of oxidation ditch underload technique.
Above content is the further description done provided technical scheme in conjunction with the preferred embodiment of the present invention; can not assert that the present invention specifically implements to be confined to these explanations above-mentioned; for general technical staff of the technical field of the invention; without departing from the inventive concept of the premise; some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (4)
- The coupled method process of the novel dyeing waste water of 1.AO, it is characterized in that: the treatment unit that above-mentioned dyeing and printing sewage adopts is made up of hydrolysis acidification pool, medium sediment pool, aeration tank and settling tank, described hydrolysis acidification pool gallery is broken-line type structure, installs agitator and stir along its reaction tank diagonal lines in it; In described aeration tank, several aeration heads are installed, and hydrolysis acidification pool and aeration tank are pulling flow type reaction tank; Dyeing waste water enters hydrolysis acidification pool and averaged residence is wherein after 10-18 hour, and point two portions enter medium sediment pool and aeration tank respectively; React gained in medium sediment pool and hold concurrently oxygen sludge reflux in hydrolysis acidification pool, medium sediment pool water outlet directly enters together with the sewage that distributes with hydrolysis acidification pool reacts for after 15-25 hour in aeration tank, sends into settling tank; Settling tank reaction water outlet is directly discharged, and the aerobic sludge of reaction gained then divides two portions to be back to aeration tank and hydrolysis acidification pool respectively, participates in reacting accordingly.
- 2. the coupled method process of the novel dyeing waste water of AO as claimed in claim 1, it is characterized in that: in described hydrolysis acidification pool water outlet, the sewage quantity entering medium sediment pool accounts for 2/3 of total inflow, and the sewage quantity entering aeration tank accounts for 1/3 of total inflow.
- 3. the coupled method process of the novel dyeing waste water of AO as claimed in claim 1, is characterized in that: the reflux ratio of described double oxygen mud is 60-80%.
- 4. the coupled method process of the novel dyeing waste water of AO as claimed in claim 1, is characterized in that: the total reflux ratio of described aerobic sludge is 60-80%, and wherein 2/3 enter hydrolysis acidification pool, 1/3 enters aeration tank.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105384311A (en) * | 2015-12-09 | 2016-03-09 | 浦华环保股份有限公司 | Method for processing high concentration comprehensive municipal sewage and apparatus thereof |
| CN106045027A (en) * | 2016-05-31 | 2016-10-26 | 绍兴水处理发展有限公司 | Process of hydrolytic acidification of printing and dyeing wastewater through ABR reactor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102329043A (en) * | 2011-08-02 | 2012-01-25 | 浙江商达环保有限公司 | Method for treating and printing and dyeing wastewater by using hydrolysis tank |
| CN204111542U (en) * | 2014-10-20 | 2015-01-21 | 上海绿澄环保科技有限公司 | A kind of novel dyeing waste water biochemical treatment apparatus |
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2015
- 2015-06-10 CN CN201510314220.6A patent/CN104961293B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102329043A (en) * | 2011-08-02 | 2012-01-25 | 浙江商达环保有限公司 | Method for treating and printing and dyeing wastewater by using hydrolysis tank |
| CN204111542U (en) * | 2014-10-20 | 2015-01-21 | 上海绿澄环保科技有限公司 | A kind of novel dyeing waste water biochemical treatment apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105384311A (en) * | 2015-12-09 | 2016-03-09 | 浦华环保股份有限公司 | Method for processing high concentration comprehensive municipal sewage and apparatus thereof |
| CN105384311B (en) * | 2015-12-09 | 2018-01-16 | 浦华环保股份有限公司 | A kind of method and its device for handling high concentration conurbation sewage |
| CN106045027A (en) * | 2016-05-31 | 2016-10-26 | 绍兴水处理发展有限公司 | Process of hydrolytic acidification of printing and dyeing wastewater through ABR reactor |
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