CN104961293B - The coupled method treatment of AO dyeing waste waters - Google Patents

The coupled method treatment of AO dyeing waste waters Download PDF

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Publication number
CN104961293B
CN104961293B CN201510314220.6A CN201510314220A CN104961293B CN 104961293 B CN104961293 B CN 104961293B CN 201510314220 A CN201510314220 A CN 201510314220A CN 104961293 B CN104961293 B CN 104961293B
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China
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hydrolysis acidification
pool
aeration tank
acidification pool
medium sediment
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CN201510314220.6A
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CN104961293A (en
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虞伟权
宋华龙
奚晓东
钱建华
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SHAOXING WATER TREATMENT DEVELOPMENT Co Ltd
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SHAOXING WATER TREATMENT DEVELOPMENT Co Ltd
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Abstract

The present invention relates to a kind of coupled method treatment of the new dyeing waste waters of AO, belong to techniques of Dyeing Wastewater Treatment field.Dyeing waste water enters hydrolysis acidification pool and average stop wherein(HRT)After for 10 18 hours, a point two parts respectively enter medium sediment pool and aeration tank;Reacted in medium sediment pool in gained and oxygen sludge reflux to hydrolysis acidification pool, medium sediment pool water outlet is directly entered reacts after 15 25 hours, to send into sedimentation basin together with the sewage of hydrolysis acidification pool distribution in aeration tank;Sedimentation basin reaction water outlet is expelled directly out, and the aerobic sludge obtained by reaction then divides two parts to be back to aeration tank and hydrolysis acidification pool respectively, participates in corresponding reaction.Above-mentioned technique of the invention is applied to the treatment of integrated printing and dyeing waste water, has the advantages that low cost, process time be short, treatment effect is obvious, COD clearances can improve more than 10%, water outlet is nitrogenous phosphorous to be below standard.

Description

The coupled method treatment of AO dyeing waste waters
Technical field
The present invention relates to a kind of method that new A O coupling techniques process dyeing waste water, belong to dyeing waste water technical field.
Background technology
In waste water from dyestuff to contain nitrogen P elements, in the treatment of waste water, A/O methods are used widely more, are such as directed to anaerobism work Skill, develops various anaerobic reactors, such as EGSB, ABR, UASB, IC;For hydrolysis acidification, various hydrolysis acidifications are derived Type of reactor;For denitrogenation dephosphorizing, the handling process with denitrogenation dephosphorizing function is developed;However as dyeing and printing process into Curing, the composition of dyeing waste water becomes increasingly complex, and the A/O methods of routine use one section of anaerobism, one section of oxygen-enriched mode, Anaerobism section is used for denitrogenation dephosphorizing;The organic matter that aerobic section is used in removing water.Although this traditional mode has reached certain taking off Nitrogen phosphorus removal functional, but effect is not notable, and for dyeing synthetic wastewater, its action effect is not particularly obvious, tradition A/O methods cannot meet the demand of water process.
Based on this, present application is made.
The content of the invention
In order to overcome denitrogenating existing for existing A/O methods, efficiency is low, process the defects such as load is big, COD contents are high, the present invention There is provided it is a kind of can stability and high efficiency denitrogenation dephosphorizing new A O coupling techniques process dyeing waste water method.
To achieve the above object, the technical scheme that the present invention takes is as follows:
The method that new A O coupling techniques process dyeing waste water, the processing unit that above-mentioned dyeing and printing sewage is used is by hydrolysis acid Change pond, medium sediment pool, aeration tank and sedimentation basin to constitute, described hydrolysis acidification pool gallery is broken-line type structure, and stirring is installed in it Device is simultaneously stirred along its reaction tank diagonal;Several aeration heads, and hydrolysis acidification pool and aeration tank are installed in described aeration tank It is pulling flow type reaction tank;Dyeing waste water enters hydrolysis acidification pool and average stop wherein(HRT)After for 10-18 hours, Two parts are divided to respectively enter medium sediment pool and aeration tank;Obtained by being reacted in medium sediment pool and in oxygen sludge reflux to hydrolysis acidification pool, in Sinking pool effluent is directly entered and is reacted for after 15-25 hours, feeding is heavy in aeration tank together with the sewage of hydrolysis acidification pool distribution Shallow lake pond;Sedimentation basin reaction water outlet is expelled directly out, and the aerobic sludge obtained by reaction then divides two parts to be back to aeration tank and water respectively Solution acidification pool, participates in corresponding reaction.
Further, as preferred:
The allocation proportion of described hydrolysis acidification pool water outlet is:Medium sediment pool accounts for the 2/3 of total inflow, and aeration tank accounts for total water inlet The 1/3 of amount.
The reflux ratio of described simultaneous oxygen sludge is 60-80%.
The total reflux ratio of described aerobic sludge is 60-80%, wherein 2/3 enters hydrolysis acidification pool, 1/3 enters aeration tank.
The present invention is directed to dyeing synthetic wastewater, develops above-mentioned new A O coupling techniques, by returning for different phase water outlet Stream and different type sludge backflow, in sewage disposal simultaneously, by the quality of sewage carry out it is multiple homogenize, and using and oxygen Sludge, the aerobic sludge characteristic of itself carry out pre- improvement to the property of sewage, and sewage is entered from the multiple angle such as water quality, water balance Row integrated treatment, had both played the effect of hydrolysis acidification technique, and wastewater treatment efficiency is reached well, low better than common oxidation ditch The treatment efficiency that load handling process can reach, not only saves substantial amounts of oxidation ditch capital cost, also substantially reduces total giving up Treatment time of water, while there is denitrogenation dephosphorizing function again, the above-mentioned simultaneous oxygen of technique coupling(And hydrolysis acidification bacterium)Aerobic, nitrification is de- The microorganisms such as nitrogen dephosphorization act synergistically, therefore treatment effect is substantially, are adapted to printing and dyeing class wastewater treatment.
With traditional AO technics comparings, COD clearances can lift more than 10%;Bio-chemical effluent ammonia nitrogen is removed within 3mg/L Rate is more than 95%;Bio-chemical effluent total nitrogen is stable within 9mg/L, clearance 80%;Bio-chemical effluent total phosphorus goes within 0.5mg/L Except rate is more than 70%, better than the treatment effect of oxidation ditch underload technique.
Brief description of the drawings
Fig. 1 is process chart of the invention.
Label in figure:1. hydrolysis acidification pool;2. medium sediment pool;3. aeration tank;4. sedimentation basin.
Specific embodiment
Embodiment 1
The method that the present embodiment new A O coupling techniques process dyeing waste water, with reference to Fig. 1, the equipment that the technique is used by Hydrolysis acidification pool 1, medium sediment pool 2, aeration tank 3 and sedimentation basin 4 are constituted, and the gallery of described hydrolysis acidification pool 1 is broken-line type structure, Agitator is installed, the agitator is stirred along the diagonal of hydrolysis acidification pool 1 in it;Several aeration heads are installed in aeration tank 3, and Hydrolysis acidification pool 1 and aeration tank 3 are pulling flow type reaction tank.
Integrated printing and dyeing waste water is processed using the said equipment:Dyeing waste water enters hydrolysis acidification pool 1, and sewage is wherein Average stop(HRT)After 13 hours, hydrolysis acidification pool 1 goes out moisture two parts:2/3 enters medium sediment pool 2, and remaining 1/3 is straight Tap into aeration tank 3;After sewage reacts in medium sediment pool 2, the simultaneous oxygen sludge reflux that the bottom of pond of medium sediment pool 2 is precipitated to hydrolysis acidification pool In 1, the reflux ratio according to Production requirement, and oxygen sludge is 60-80%;And the water outlet of medium sediment pool 2 then converges the dirt of hydrolysis acidification pool 1 Water is directly entered aeration tank 3 together, and mean residence time of the part of contaminated water in aeration tank 3 is 19 hours, the water outlet of aeration tank 3 Feeding sedimentation basin 4;The reaction water outlet of sedimentation basin 4 is expelled directly out, and the aerobic sludge of the bottom precipitation of sedimentation basin 4 is flowed back, its time Than control in 60-80%, wherein 1/3 is back to aeration tank 3, remaining 2/3 is directly back to hydrolysis acidification pool 1 to stream, and corresponding The sewage of position carries out combined reaction together.Wherein the load of medium sediment pool 2 and sedimentation basin 4 according to actual production and existing water at Depending on reason engineering design code.
The present embodiment is directed to dyeing synthetic wastewater, above-mentioned new A O coupling techniques is developed, by different phase water outlet Backflow and different type sludge backflow, in sewage disposal simultaneously, by the quality of sewage carry out it is multiple homogenize, and using and Oxygen sludge, the aerobic sludge characteristic of itself carry out pre- improvement to the property of sewage, from the multiple angle such as water quality, water balance to sewage Integrated treatment is carried out, the effect of hydrolysis acidification technique has both been played, wastewater treatment efficiency is reached well, better than common oxidation ditch The treatment efficiency that underload handling process can reach, not only saves substantial amounts of oxidation ditch capital cost, also substantially reduces total The wastewater treatment time, while there is denitrogenation dephosphorizing function again, the above-mentioned simultaneous oxygen of technique coupling(And hydrolysis acidification bacterium)It is aerobic, nitrification The microorganisms such as denitrogenation dephosphorizing act synergistically, therefore treatment effect is substantially, are adapted to printing and dyeing class wastewater treatment.
With traditional AO technics comparings, the present embodiment treatment after integrated printing and dyeing waste water, its COD clearance can be lifted 10% with On;Within 3mg/L, clearance is more than 95% to bio-chemical effluent ammonia nitrogen;Bio-chemical effluent total nitrogen is stable within 9mg/L, clearance 80%;Within 0.5mg/L, clearance is more than 70% to bio-chemical effluent total phosphorus, better than the treatment effect of oxidation ditch underload technique.
Embodiment 2
The method that the present embodiment new A O coupling techniques process dyeing waste water, with reference to Fig. 1, the equipment that the technique is used with Embodiment 1 it is identical, difference is:Dyeing waste water enters hydrolysis acidification pool 1, sewage average stop wherein(HRT)It is 15 After hour, hydrolysis acidification pool 1 goes out moisture two parts:2/3 enters medium sediment pool 2, and remaining 1/3 is directly entered aeration tank 3;Sewage exists After being reacted in medium sediment pool 2, in simultaneous oxygen sludge reflux to the hydrolysis acidification pool 1 of the bottom of pond of medium sediment pool 2 precipitation, according to Production requirement, and The reflux ratio of oxygen sludge is 65-70%;And the sewage that the water outlet of medium sediment pool 2 then converges hydrolysis acidification pool 1 is directly entered aeration tank together 3, mean residence time of the part of contaminated water in aeration tank 3 is 25 hours, the water outlet of aeration tank 3 feeding sedimentation basin 4;Sedimentation basin 4 Reaction water outlet is expelled directly out, and the aerobic sludge of the bottom precipitation of sedimentation basin 4 is flowed back, and its reflux ratio is controlled in 60-65%, its In 1/3 be back to aeration tank 3, remaining 2/3 is directly back to hydrolysis acidification pool 1, is carried out together with the sewage of relevant position Combined reaction.Wherein the load of medium sediment pool 2 and sedimentation basin 4 is according to actual production and existing engineering of water treatment design specification It is fixed.
Integrated printing and dyeing waste water after the present embodiment treatment, its COD clearance can lift more than 10%;Bio-chemical effluent ammonia nitrogen exists Within 3mg/L, clearance is more than 95%;Bio-chemical effluent total nitrogen is stable within 9mg/L, clearance 80%;Bio-chemical effluent total phosphorus exists Within 0.5mg/L, clearance is more than 70%, better than the treatment effect of oxidation ditch underload technique.
Embodiment 3
The method that the present embodiment new A O coupling techniques process dyeing waste water, with reference to Fig. 1, the equipment that the technique is used with Embodiment 1 it is identical, difference is:Dyeing waste water enters hydrolysis acidification pool 1, sewage average stop wherein(HRT)It is 11 After hour, hydrolysis acidification pool 1 goes out moisture two parts:2/3 enters medium sediment pool 2, and remaining 1/3 is directly entered aeration tank 3;Sewage exists After being reacted in medium sediment pool 2, in simultaneous oxygen sludge reflux to the hydrolysis acidification pool 1 of the bottom of pond of medium sediment pool 2 precipitation, according to Production requirement, and The reflux ratio of oxygen sludge is 75-80%;And the sewage that the water outlet of medium sediment pool 2 then converges hydrolysis acidification pool 1 is directly entered aeration tank together 3, mean residence time of the part of contaminated water in aeration tank 3 is 15 hours, the water outlet of aeration tank 3 feeding sedimentation basin 4;Sedimentation basin 4 Reaction water outlet is expelled directly out, and the aerobic sludge of the bottom precipitation of sedimentation basin 4 is flowed back, and its reflux ratio is controlled in 75-80%, its In 1/3 be back to aeration tank 3, remaining 2/3 is directly back to hydrolysis acidification pool 1, is carried out together with the sewage of relevant position Combined reaction.Wherein the load of medium sediment pool 2 and sedimentation basin 4 is according to actual production and existing engineering of water treatment design specification It is fixed.
Integrated printing and dyeing waste water after the present embodiment treatment, its COD clearance can lift more than 10%;Bio-chemical effluent ammonia nitrogen exists Within 3mg/L, clearance is more than 95%;Bio-chemical effluent total nitrogen is stable within 9mg/L, clearance 80%;Bio-chemical effluent total phosphorus exists Within 0.5mg/L, clearance is more than 70%, better than the treatment effect of oxidation ditch underload technique.
Above content be combine that the preferred embodiment of the present invention made to provided technical scheme further specifically It is bright, it is impossible to assert that present invention specific implementation is confined to above-mentioned these explanations, for the common skill of the technical field of the invention For art personnel, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, should be all considered as Belong to protection scope of the present invention.

Claims (2)

  1. The coupled method processing method of 1.AO dyeing waste waters, it is characterised in that:The processing unit that dyeing and printing sewage is used is by hydrolysis acid Change pond, medium sediment pool, aeration tank and sedimentation basin to constitute, described hydrolysis acidification pool gallery is broken-line type structure, and stirring is installed in it Device is simultaneously stirred along its reaction tank diagonal;Several aeration heads, and hydrolysis acidification pool and aeration tank are installed in described aeration tank It is pulling flow type reaction tank;Dyeing waste water enters hydrolysis acidification pool and average stop wherein is after 10-18 hours, to be divided to two Respectively enter medium sediment pool and aeration tank;Reacted in medium sediment pool in gained and oxygen sludge reflux to hydrolysis acidification pool, medium sediment pool goes out Water is directly entered and is reacted after 15-25 hours, to send into sedimentation basin in aeration tank together with the sewage of hydrolysis acidification pool distribution;It is heavy The reaction water outlet of shallow lake pond is expelled directly out, and the aerobic sludge obtained by reaction then divides two parts to be back to aeration tank and hydrolysis acidification respectively Pond, participates in corresponding reaction;In described hydrolysis acidification pool water outlet, the sewage quantity into medium sediment pool accounts for the 2/3 of total inflow, enters The sewage quantity for entering aeration tank accounts for the 1/3 of total inflow;The reflux ratio of described simultaneous oxygen sludge is 60-80%.
  2. 2. the coupled method processing method of AO dyeing waste waters as claimed in claim 1, it is characterised in that:Described aerobic sludge is total Reflux ratio be 60-80%, wherein 2/3 enters hydrolysis acidification pool, 1/3 enters aeration tank.
CN201510314220.6A 2015-06-10 2015-06-10 The coupled method treatment of AO dyeing waste waters Expired - Fee Related CN104961293B (en)

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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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CN102329043B (en) * 2011-08-02 2013-03-27 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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