CN100363274C - High nitrogen high concentration organic wastewater disposal process - Google Patents
High nitrogen high concentration organic wastewater disposal process Download PDFInfo
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- CN100363274C CN100363274C CNB2004100408553A CN200410040855A CN100363274C CN 100363274 C CN100363274 C CN 100363274C CN B2004100408553 A CNB2004100408553 A CN B2004100408553A CN 200410040855 A CN200410040855 A CN 200410040855A CN 100363274 C CN100363274 C CN 100363274C
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- denitrification
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Abstract
The present invention relates to technology for treating organic wastewater with high nitrogen and a high concentration, which solves the problem of high technology difficulty for treating the organic waste water with high nitrogen and a high concentration, high energy consumption, high operating cost, and comprises the following steps: 60% to 90% of waste water with high nitrogen and a high concentration is treated in an anaerobic mode in an anaerobic nitrification system, 10% to 40% of organic waste water with high nitrogen and a high concentration without anaerobic nitrification directly enters a water distribution reservoir to be mixed with anaerobic outflow water, and aerobic post-treatment is implemented to the mixed water. Necessary carbon sources for denitrification are obtained by adding the organic waste water (distributed water) with high nitrogen and a high concentration without anaerobic nitrification to the anaerobic outflow water. The aerobicpost-treatment adopts sequence batch reactor technology (SBR) with intermittent aeration, and ensures the denitrification effect of the denitrification of the system because of the low loads and high reflux ratio of the SBR. Water distribution and the SBR technology are combined so as to promote the denitrification of the denitrification, complement the alkalinity consumed by the nitrification, keep the pH value of the system stable, and improve the degradation efficiency of the organic pollutants and NH4. The present invention has the advantages of reducing the organic loads of aerobic treatment, oxygen demand in the aerobic stage, and the production capacity of sludge, adding no extraneous source, namely organic carbon, to keep the denitrification, and adding no alkali to keep the alkalinity of the system.
Description
Technical field the invention belongs to the environmental engineering field of waste water treatment, is mainly used in the processing of livestock breeding wastewater, fermentation waste water, the contour nitrogen high concentrated organic wastewater of wastewater from chemical industry.
Background technology is for high nitrogen high concentrated organic wastewater, and the general anaerobic digestion process that adopts is earlier handled, and removes most organic pollutants, alleviates the burden of follow-up aerobic treatment, reclaims the energy-methane simultaneously.But, for high NH
4 +The organic waste water of-N, high COD as plant's waste water, sends out waste water and wastewater from chemical industry pure etc. through after the anaerobic digestions, and most COD are degraded, but NH
4 +-N does not have to remove substantially.Anaerobic effluent becomes a kind of waste water of high nitrogen low-carbon (LC) as a result.If again the anaerobic effluent of this high nitrogen low-carbon (LC) is carried out aerobic aftertreatment, effect is all poor, COD clearance only 10%～40%, TKN clearance 47.2%～64.6% (Jung-jeng-Su 1999), NH
4 +-N clearance 68.7% (Ng Wun Jern 1987), emission standard can not be satisfied in 55%～57.3% (Yang Hong 2000).The key issue of its aerobic aftertreatment weak effect is because its low BOD
5High NH
4 +-N can not satisfy the required carbon source of denitrification, so a little less than the denitrification, the basicity of nitrification consumption can not obtain covering, causes treatment system " acidifying ", and the microbial performance deterioration (Ng Wun Jern 1987, Yang Hong 2000, Deng Liang big 2002).Adding alkali (Yang Hong etc., 2000) or adding exogenous organic matter matter (Obaja etc. 2003) is people's improving one's methods of employing usually, has increased treatment facility, working cost and manipulation strength greatly but add alkali or add exogenous organic matter matter, is difficult to carry out on engineering.Based on this, for the high nitrogen high concentrated organic wastewater of this class, some investigators abandon the anaerobism pre-treatment, (Liao etc. 1991, and Fernandes etc. 1991, and Bortone etc. 1992 directly to carry out aerobic treatment, Su Jung-Jeng etc. 1997, Edgerton 2000, Kou Jianchao etc. 2004).Can obtain organic pollutant and NH preferably although directly carry out aerobic treatment
4 +-N removal effect, but because the Pollutant levels of this class waste water are very high when adopting aerobic process directly to handle, generally need be diluted or adopts the hydraulic detention time (HRT) of length waste water, and the both can strengthen reactor volume and oxygen supply energy consumption.Raw wastewater is diluted, also can increase because of the cost due to the dilution water.
Summary of the invention is set up a kind of high nitrogen high concentrated organic wastewater and is handled novel process: anaerobism-Jia Yuanshui-intermittent aeration (anaerobic--adding raw wastewater-intermittent aeration) technology (being called for short Anarwia technology).Just: before anaerobic treatment, waste water is shunted, most of high nitrogen high concentrated organic wastewater enters anaerobic digester system and carries out anaerobic treatment, small portion directly enters distribution reservoir without the high nitrogen high concentrated organic wastewater (hereinafter to be referred as former water) of anaerobic digestion to be mixed with the anaerobism water outlet, and mixing water carries out aerobic aftertreatment again.
By adding certain former water, and adopt the sequencing batch reactor technology (SBR) of intermittent aeration to carry out aerobic aftertreatment, the denitrification of accelerating system replenishes basicity, keeps the pH of system value stabilization, guarantees system's degradation property.By the processing of this technology, water outlet can reach NH
4 +-less than 15mg/L, TN is less than 80mg/L, and COD is less than 300mg/L, BOD
5Less than 30mg/L.
And the anaerobic digester system of whole waste water treatment process and ordinary method are basic identical.Novelty of the present invention shows following several respects:
(1) the rich nitrogen of the high COD organic waste water of high nitrogen anaerobic effluent lacks carbon, can improve the biodegradability (BOD of anaerobism water outlet by water distribution
5/ COD) and carbon-nitrogen ratio (BOD
5/ N), the carbon-nitrogen ratio of microorganism growth is more become rationally, help the microorganism growth breeding;
(2) can increase readily degradable organism in the anaerobism water outlet by water distribution, help denitrification, thereby can increase basicity, keep the normal pH value of treatment system.Denitrification simultaneously strengthens, and has reduced nitrate nitrogen (NO in the system
3 --N) accumulation and to nitrated restraining effect, help nitrification, thereby promoted NH
4 +The final removal of the conversion of-N and nitrogen;
(3) directly handle high nitrogen high concentrated organic wastewater with aerobic process and compare, the investment of Anarwia technology, energy consumption and working cost reduce greatly;
(4) compare with the high nitrogen high concentrated organic wastewater of conventional anaerobic-aerobic art breading, Anarwia art breading effect is significantly improved, and to the clearance raising of pollutent, the water outlet Pollutant levels reduce;
(5) do not need to add the external source organic carbon;
(7) need not add alkali and keep system's basicity.
Embodiment Anarwia technology comprises anaerobic digester system, distribution reservoir and aerobic after-treatment system.According to the high nitrogen high concentrated organic wastewater of difference characteristics separately, looking particular case outside this technology increases preprocessing system (equalizing tank, solid-liquid separation, water collecting basin etc.) and sludge dewatering system etc.Anaerobic digester system comprises anaerobic digestion reaction vessel, biogas storage, purifies and utilize.Anaerobic digestion reaction vessel can adopt anaerobism contact reactor (AC), anaerobic filter (AF), up-flow anaerobic sludge blanket (UASB) etc. according to wastewater characteristics.The present invention requires to establish the anaerobic digester fresh feed pump and the distribution reservoir fresh feed pump is respectively applied for anaerobic digester charging and water distribution at water collecting basin.Implementation step of the present invention is as follows:
(1) 60%～90% high nitrogen high concentrated organic wastewater enters anaerobic digester system and carries out anaerobic treatment, and the anaerobism water outlet enters distribution reservoir through post precipitation.
(2) 10%～40% high nitrogen high concentrated organic wastewater directly enters distribution reservoir to be mixed with anaerobic effluent.
(3) mixing water adopts the SBR technology with good denitrification effect to carry out aerobic aftertreatment, sludge loading 0.05～0.15kg-BOD of SBR
5/ kg-MLSS.d.
(4) make treatment system steady running by pH value before idle stage SBR stirring and the adjusting mixing water proportioning control aeration greater than 7.5.
Claims (3)
1. be used for anaerobism-Jia Yuanshui-intermittent aeration method that high nitrogen high concentrated organic wastewater is handled, comprise anaerobic digester system, distribution reservoir and aerobic after-treatment system, water carries out water distribution to anaerobic effluent in distribution reservoir Central Plains, be characterised in that: shunting waste water, 60%～90% high nitrogen high concentrated organic wastewater enters anaerobic digester system and carries out anaerobic treatment, 10%～40% the high nitrogen high concentrated organic wastewater without anaerobic digestion directly enters distribution reservoir to be mixed with the anaerobism water outlet, and mixing water carries out aerobic aftertreatment again.
2. anaerobism-Jia Yuanshui-intermittent aeration the method that is used for high nitrogen high concentrated organic wastewater processing according to claim 1, it is characterized in that: adopt the sequencing batch reactor of intermittent aeration to carry out aerobic aftertreatment, the sludge loading 0.05～0.15kg-BOD of sequencing batch reactor
5/ kg-MLSS.d.
3. anaerobism-Jia Yuanshui-intermittent aeration the method that is used for high nitrogen high concentrated organic wastewater processing according to claim 2, it is characterized in that:, keep the preceding pH value of sequencing batch reactor aeration greater than 7.5 by the stirring and the adjusting mixing water proportioning in idle stage of sequencing batch reactor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100408553A CN100363274C (en) | 2004-10-18 | 2004-10-18 | High nitrogen high concentration organic wastewater disposal process |
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| CNB2004100408553A CN100363274C (en) | 2004-10-18 | 2004-10-18 | High nitrogen high concentration organic wastewater disposal process |
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| CN1762852A CN1762852A (en) | 2006-04-26 |
| CN100363274C true CN100363274C (en) | 2008-01-23 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638286B (en) * | 2009-09-10 | 2011-05-25 | 浦华控股有限公司 | Treatment method of sewage containing dyeing wastewater |
| CN106745744B (en) * | 2016-12-31 | 2020-07-03 | 四川美富特生态科技有限责任公司 | Sewage treatment method and sewage treatment system |
| CN110092469A (en) * | 2019-05-14 | 2019-08-06 | 清华大学 | A kind of organic liquid waste/high concentration nitrate waste liquid collaboration denitrogenation removes the diphasic anaerobic processing method and processing device of organic carbon |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065645A (en) * | 1992-05-22 | 1992-10-28 | 中国纺织大学 | Aerobic-the hold concurrently oxygen-anaerobic purifing method and the device of high concentrated organic wastewater |
| JP2000279991A (en) * | 1999-01-27 | 2000-10-10 | Masao Yano | Denitrification/reduction type water cleaning treatment system using facultative anaerobic bacteria |
| CN1308028A (en) * | 2001-01-16 | 2001-08-15 | 兰州英格环境工程技术有限公司 | Secondary underground sewage-percolating purificatino technology |
| CN1382647A (en) * | 2002-05-10 | 2002-12-04 | 清华大学 | Equipment for denitrifying and dephosphating sewage in integrated aerobic/anaerobic biologic fiter pool |
| US20040055951A1 (en) * | 2002-06-24 | 2004-03-25 | Kuraray Co., Ltd. | Apparatus and method for treating wastewater containing nitrogen-containing dyes |
| CN2617762Y (en) * | 2003-05-21 | 2004-05-26 | 何睦盈 | Double running mode biological dephosphorizing and denitrifying sewage treater |
| CN1509995A (en) * | 2002-12-25 | 2004-07-07 | 宜兴鹏鹞阳光环保有限公司 | Improved sewage secondary biochemical treating process and reactor |
-
2004
- 2004-10-18 CN CNB2004100408553A patent/CN100363274C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1065645A (en) * | 1992-05-22 | 1992-10-28 | 中国纺织大学 | Aerobic-the hold concurrently oxygen-anaerobic purifing method and the device of high concentrated organic wastewater |
| JP2000279991A (en) * | 1999-01-27 | 2000-10-10 | Masao Yano | Denitrification/reduction type water cleaning treatment system using facultative anaerobic bacteria |
| CN1308028A (en) * | 2001-01-16 | 2001-08-15 | 兰州英格环境工程技术有限公司 | Secondary underground sewage-percolating purificatino technology |
| CN1382647A (en) * | 2002-05-10 | 2002-12-04 | 清华大学 | Equipment for denitrifying and dephosphating sewage in integrated aerobic/anaerobic biologic fiter pool |
| US20040055951A1 (en) * | 2002-06-24 | 2004-03-25 | Kuraray Co., Ltd. | Apparatus and method for treating wastewater containing nitrogen-containing dyes |
| CN1509995A (en) * | 2002-12-25 | 2004-07-07 | 宜兴鹏鹞阳光环保有限公司 | Improved sewage secondary biochemical treating process and reactor |
| CN2617762Y (en) * | 2003-05-21 | 2004-05-26 | 何睦盈 | Double running mode biological dephosphorizing and denitrifying sewage treater |
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