CN1220243A - Method for integral treatment of domestic and chemical industrial sewage - Google Patents
Method for integral treatment of domestic and chemical industrial sewage Download PDFInfo
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- CN1220243A CN1220243A CN 98121487 CN98121487A CN1220243A CN 1220243 A CN1220243 A CN 1220243A CN 98121487 CN98121487 CN 98121487 CN 98121487 A CN98121487 A CN 98121487A CN 1220243 A CN1220243 A CN 1220243A
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Abstract
The present invention relates to an effective technological process (AOAO-membrane addition process) for treating domestic and chemical integrated sewage, strengthening endogenous denitrification action. It is characterized by that in te course of treatment of sewage its front-stage treatment provides stable and good environment for bacterial growth for subsequent nitration, and finally, said invented technological process makes the complex chemical and domestic sewage attain the following indexes: when the CODCR of inlet water is 500-900 mg/L and amino-nitrogen of inlet water is less than 150 mg/L, the 90% of CODCR of outlet water is les sthan 130 mg/L, 40-50% of data is less than 100 mg/L and amino-nitrogen content is less than 15 mg/L.
Description
The present invention relates to live and the biochemical processing method of chemical industry composite wastewater, especially adopt the method for life of two-stage denitrification one oxidation coating method art breading and chemical industry composite wastewater.
At present, the sewage biochemical processing process mainly contains single-stage AO technology, secondary AOO technology and secondary OAO technology, and wherein A represents anaerobism or anoxic condition, and O represents the aeration state.As Fig. 1, Fig. 2, shown in Figure 3.These several technologies all have removal NH
3N and COD
CREffect, but different for its treatment effect of sewage of different quality.Especially at the sewage that contains complicated organic component and higher concentration ammonia nitrogen, its treatment effect is not satisfactory.The common issue with that they exist: 1. all need nitrated mixed-liquor return, be generally 2～5 times of flooding quantity, purpose is to strengthen the denitrification of A section in the reactor, has so just strengthened power consumption; 2. as water inlet COD
CR/ N increased reflux ratio and can not improve denitrification speed less than 4 o'clock, and is opposite because quantity of reflux is big, and the dissolved oxygen of bringing the denitrification section into is many, and denitrification is had restraining effect, reduces denitrification rate; 3. in the simple denitrification process based on rear-mounted denitrification (as OAO technology), because its denitrification rate is low, thereby needs long hydraulic detention time, it is big to cause equipment volume, and investment is high.4. the cultivation difficulty of nitrifier, the nitrification instability is to such an extent as to the nitration reaction of system is undesirable.
The object of the present invention is to provide a kind of new processing life and the method for chemical industry composite wastewater, overcome shortcomings such as the traditional technology reflux ratio is big, nitrifier cultivation difficulty, wastewater treatment efficiency difference.
Sewage water treatment method of the present invention mainly divides following a few step: the 1. first denitrification section (A1 section): main effect is anoxic absorption, intensified anti-nitrated effect; 2. first oxidation panel (O1 section): remove organism and a spot of ammonia nitrogen; 3. the second denitrification section (A2 section): utilize the organic carbon source of anoxic absorption, intensified anti-nitrated effect; 4. second oxidation panel (O2 section): remove organism and a spot of ammonia nitrogen; 5. film section: create to nitrobacteria and stablize good growing environment, strengthen nitrification, mainly remove ammonia nitrogen.
Fig. 1 is a single-stage AO process flow sheet.
Fig. 2 is a single-stage AOO process flow sheet.
Fig. 3 is a single-stage OAO process flow sheet.
Fig. 4 is life of the present invention and chemical industry composite wastewater processing technological flow figure.
Elaborate below in conjunction with 4 pairs of lives of the present invention of accompanying drawing and chemical industry composite wastewater processing method.
Life and chemical industry composite wastewater (1) enter one section reaction tank (4) by tank (2). It is first anti-that this reaction tank (4) is divided into Nitrated section (A1), first oxidation panel (O1), the second denitrification section (A2) and second oxidation panel (O2). Composite wastewater (1) at first enters The first denitrification section (A1), in this section in the microorganism adsorption water large amount of organic as storing carbon source, simultaneously organic in water in this section Thing is that carbon source is carried out anti-nitration reaction to remove the nitrate nitrogen in the water, enters afterwards first oxidation panel (O1) oxidation of organic compounds also a small amount of Ammonia nitrogen is oxidized to nitrate nitrogen: enter then the second denitrification section (A2), utilize the organic carbon source of first denitrification section anoxic absorption, strengthen Denitrification, to reach high nitric efficiency, sewage enters second oxidation panel (O2) afterwards, removes organic matter and a small amount of ammonia nitrogen; Sewage And mud comes out to enter a heavy pond (5) from one section reaction tank (4) and carries out mud-water separation, and sludge reflux (3) is to the first denitrification section (A1), Reflux ratio is 0.7-1.0, and sewage enters film section reaction tank (6) afterwards, and the film section is created one to nitrobacteria and stablized good growing environment, Strengthen nitrification, mainly remove ammonia nitrogen. With regard to overall process, remove most of organic matter and created also for film section nitration reaction for one section A stable sound response condition. Sewage enters second pond (8) after coming out from film section reaction tank (6), and second pond (8) just exists When film section biofilm is cultivated, in order to the mud (7) that refluxes and take out of from the film section, after finishing, biofilm stops to reflux. The sewage of processing through the film section is Water outlet (9). This technology total hrt is about 40-50 hour.
The present invention is owing to adopt two-stage denitrification one oxidation coating method technology, strengthened the endogenous denitrification effect, need not nitrification liquid and reflux, and the processing of one section reaction tank has been created for film section nitrification to stablize good bacterial growth environment, make nitrogen removal rate reach 70～80%, as water inlet COD
CRBe 500～900mg/L (B/C=0.2～0.3), influent ammonia nitrogen is during less than 150 mg/L, water outlet COD
CR90% data are less than 130mg/L, and 40～50% data are less than 100mg/L, and ammonia-nitrogen content is less than 15mg/L.
Embodiment:
The life of COD550mg/L ammonia nitrogen 100mg/L and chemical industry composite wastewater enter film section reaction tank after one section reaction tank is handled 25 hours, record COD110mg/L in the water, ammonia nitrogen 60mg/L this moment, and organic removal reaches 80%; Water outlet after the film reaction pond is handled 25 hours, COD is less than 100mg/L, and the water outlet ammonia-nitrogen content is less than 15mg/L.
Claims (3)
1. live and chemical industry composite wastewater treatment process for one kind, form by two-stage denitrification-oxidation panel and film reaction section, it is characterized in that sewage at first enters the first denitrification section by tank, adsorb organic compound is also removed nitric nitrogen in the water, enter the first oxidation panel oxidation of organic compounds afterwards and a spot of ammonia nitrogen is oxidized to nitric nitrogen, enter the second denitrification section then, utilize the intensified anti-nitrated effect of organic carbon source of first denitrification section absorption, enter second oxidation panel afterwards and remove organism and a small amount of ammonia nitrogen, enter a heavy pond through the sewage of two-stage denitrification-oxide treatment and carry out mud-water separation, mud is back to the first denitrification section, sewage enters the film reaction section and removes ammonia nitrogen then, at last by the second pond water outlet.
2. sewage water treatment method according to claim 1 is characterized in that described second pond is when film reaction section biofilm is cultivated, and in order to the mud that refluxes and take out of from the film reaction section, stops after biofilm is finished refluxing.
3. sewage water treatment method according to claim 1 is characterized in that total hrt is 40～50 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98121487 CN1076325C (en) | 1998-09-30 | 1998-09-30 | Method for integral treatment of domestic and chemical industrial sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98121487 CN1076325C (en) | 1998-09-30 | 1998-09-30 | Method for integral treatment of domestic and chemical industrial sewage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1220243A true CN1220243A (en) | 1999-06-23 |
| CN1076325C CN1076325C (en) | 2001-12-19 |
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ID=5227115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98121487 Expired - Fee Related CN1076325C (en) | 1998-09-30 | 1998-09-30 | Method for integral treatment of domestic and chemical industrial sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1076325C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105565582A (en) * | 2014-10-09 | 2016-05-11 | 中国石油化工股份有限公司 | Method for treatment on sewage produced through preparation of hydrogen from coal |
-
1998
- 1998-09-30 CN CN 98121487 patent/CN1076325C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105565582A (en) * | 2014-10-09 | 2016-05-11 | 中国石油化工股份有限公司 | Method for treatment on sewage produced through preparation of hydrogen from coal |
| CN105565582B (en) * | 2014-10-09 | 2018-07-03 | 中国石油化工股份有限公司 | Coal hydrogen manufacturing sewage water treatment method |
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| Publication number | Publication date |
|---|---|
| CN1076325C (en) | 2001-12-19 |
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