CN101891334A - Low energy consumption integrated hydrolysis-denitrifying ammoxidation process for treating low C/N ratio wastewater - Google Patents
Low energy consumption integrated hydrolysis-denitrifying ammoxidation process for treating low C/N ratio wastewater Download PDFInfo
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- CN101891334A CN101891334A CN 201010217069 CN201010217069A CN101891334A CN 101891334 A CN101891334 A CN 101891334A CN 201010217069 CN201010217069 CN 201010217069 CN 201010217069 A CN201010217069 A CN 201010217069A CN 101891334 A CN101891334 A CN 101891334A
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Abstract
The invention provides a low energy consumption integrated hydrolysis-denitrifying ammoxidation process for treating low C/N ratio wastewater, and belongs to the technical field of wastewater treatment in environment engineering. The process is characterized in that: a second hydrolysis region and an aerobic denitrification region are connected in series to provided a nitrate nitrogen electron acceptor for the denitrifying ammoxidation process; the second hydrolysis region is connected in parallel to provide volatile fatty acid and ammonia nitrogen; and autotrophic nitrogen removal without an additional carbon source can be realized in the denitrifying ammoxidation reacting region finally. The process has the advantages of improving the nitrogen pollutant removal effect without the additional carbon source, reducing aeration energy consumption and sludge yield, and reducing greenhouse gas emission compared with the traditional denitrification process; and the design of a modular reactor guided by an integrated baffle and the flow design without sludge return can effectively reduce floor area, and greatly reduce operation complexity.
Description
Technical field
The invention belongs to field of environment engineering technology, relate to the low ratio of carbon to ammonium wastewater processing technology, particularly at the implementation method of the less energy-consumption autotrophic denitrification function of low ratio of carbon to ammonium waste water.
Background technology
Low ratio of carbon to ammonium waste water mainly comprises high-concentration ammonia nitrogenous wastewater (as chemical fertilizer, coking, petrochemical industry, pharmacy, food wastewater etc.) and improves the city domestic sewage cause carbon-nitrogen ratio to descend day by day because of quality of residents'life.The tradition denitrification process need be converted into nitrate with ammonia nitrogen through nitration processes, then via the denitrification process denitrogenation.But nitration processes oxygen requirement height, energy consumption is big; Denitrification process needs organic carbon source as electron donor, and for low ratio of carbon to ammonium waste water, sewage work adds methyl alcohol usually as additional carbon at present, causes running cost to improve.
Late 1980s anaerobic ammonia oxidizing bacteria discovery, for the exploitation of one-step autotrophic biological denitrification process provides foundation.Anammox is meant under anaerobic condition or anoxia condition, anaerobic ammonia oxidizing bacteria directly with ammonia nitrogen as electron donor, as electron acceptor(EA), ammonia nitrogen, nitrite are converted into the biological oxidation process of nitrogen with nitrite.Anammox is present known most economical biological denitrificaion approach, compares with traditional nitration denitrification technology to have that oxygen requirement is low, working cost is low and do not need advantage such as additional carbon, and owing to do not produce greenhouse gases, is called as sustainable denitride technology.But when containing organism in the water inlet, anaerobic ammonia oxidizing bacteria is active can be suppressed by organic components in the waste water; And anaerobic ammonia oxidation process water inlet has the proportion requirement of comparison strictness for ammonia nitrogen and nitrite, causes its pre-treatment half nitrated stage control difficulty; In addition, waste water can produce a certain amount of nitrate nitrogen after handling via anaerobic ammonia oxidation process, can not make water outlet satisfy the urban sewage discharge standard of increasingly stringent.
2006, people such as Kalyuzhnyi proposed denitrifying ammoxidation (DEnitrifying AMmoniumOxidation, DEAMOX) technology.The denitrifying ammoxidation technology is the short-cut denitrification process that nitrate nitrogen generates nitrous acid nitrogen to be combined as electron acceptor(EA) anaerobic ammonium oxidation process with voltaile fatty acid in the anaerobe film, no longer need to control the half nitrated stage of difficulty, and the water outlet total nitrogen concentration can reduce effectively.In the research, be the sewage treatment technology process complexity of core with the denitrifying ammoxidation technology at present, need a plurality of reactors and mud to reflux, it is bigger to control difficulty, the handiness deficiency.
Summary of the invention
The purpose of this invention is to provide a kind of less energy-consumption and handle the integral process of low ratio of carbon to ammonium waste water, the autotrophic microorganism denitrogenation under the carbon-containing condition that can realize intaking of this technology, can fully effectively remove the nitrate pollution material, cut down the consumption of energy simultaneously, save cost, simple to operate, be easy to realize.
The technical scheme that realizes the integral process of less energy-consumption processing low ratio of carbon to ammonium waste water of the present invention is:
The operation less energy-consumption is handled the reactor of low ratio of carbon to ammonium waste water integral process and is made up of the 1st hydrolysis area, the 2nd hydrolysis area, aerobic nitrification district and denitrifying ammoxidation reaction zone.Anaerobic hydrolysis district and denitrifying ammoxidation district top seal, top cover is provided with venting port; The aerobic nitrification district is provided with aeration head, provides nitrifying process required oxygen by aerator.The denitrifying ammoxidation reaction zone is provided with the non-woven fabrics filler and adheres to anaerobic ammonia oxidizing bacteria and denitrifying bacteria mixing microorganisms group in order to absorption, and other each district is provided with semi soft packing to form microbial film, to increase biomass.Reactor also is provided with temperature control unit.
The reactor water inlet enters the 1st hydrolysis area and the 2nd hydrolysis area of parallel running respectively in proportion by under meter control, and hydrolysis of organic matter produces voltaile fatty acid (VFA) in the waste water.The 1st hydrolysis area is connected with the aerobic nitrification district, with the traverse baffle water conservancy diversion, make the waste water that reduces organic loading through hydrolysis finish nitrifying process, ammonia nitrogen is oxidized to nitrate or nitrite, enter the denitrifying ammoxidation reaction zone with the 2nd hydrolysis area water outlet of parallel running in the aerobic nitrification district.The mixing microorganisms group of inoculation anaerobic ammonia oxidizing bacteria and denitrifying bacteria on the denitrifying ammoxidation reaction zone non-woven fabrics filler, utilize that nitrate is electron acceptor(EA) in the 1st hydrolysis area+aerobic nitrification district water outlet, with voltaile fatty acid in the 2nd hydrolysis area is after electron donor generation short-cut denitrification generates nitrite, to finish the Anammox autotrophic denitrification with ammonia nitrogen in the 2nd hydrolysis area water outlet.Wherein, the volume of the 1st hydrolysis area and aerobic nitrification zone can be regulated by the partition position conversion.
Effect of the present invention and benefit are: anaerobic hydrolysis combines with up-to-date wastewater processing technology denitrifying ammoxidation, realization is handled for the autotrophic denitrification of low ratio of carbon to ammonium waste water, improve nitrate pollution thing removal effect, need not additional carbon, reduce aeration energy consumption and sludge yield, and more traditional nitration denitrification technology reduces greenhouse gas emission; The box reactor design of integral baffle plate water conservancy diversion and need not the flow scheme design that mud refluxes and can effectively reduce floor space reduces significantly and controls complexity.
Description of drawings
Fig. 1 is the integrated hydrolysis-denitrifying ammoxidation process plot plan.
Among the figure: 1 the 2nd hydrolysis area, 2 the 1st hydrolysis areas, 3 aerobic nitrification districts, 4 denitrifying ammoxidation reaction zones, 5 volume adjustment dividing plates, 6 semi soft packings, 7 non-woven fabrics fillers, 8 peristaltic pumps, 9 inlet chests, 10 liquid meters, 11 temperature control units (electrical thermometer, thermopair, heating zone), 17 thief holes, 18 effluent weirs.
Fig. 2 is integrated hydrolysis-denitrifying ammoxidation process facade layout drawing (A-A ' section).
Among the figure: 2 the 1st hydrolysis areas, 3 aerobic nitrification districts, 4 denitrifying ammoxidation reaction zones, 6 semi soft packings, 7 non-woven fabrics fillers, 8 peristaltic pumps, 9 inlet chests, 10 liquid meters, 12 aeration pumps, 13 venting ports, 14 aeration heads, 15 mud return passages, 16 gas meters, 18 effluent weirs.
Embodiment
Most preferred embodiment below in conjunction with technical scheme and accompanying drawing detailed description apparatus of the present invention.
This technology can be used for handling C/N than the high ammonia nitrogen city domestic sewage of low COD about 2-4.If influent quality changes, the C/N ratio is higher than at 4 o'clock, suitably improves the hydraulic detention time of hydrolysis section according to the COD value; When C/N is relatively lower, the hydraulic detention time of proper extension denitrifying ammoxidation conversion zone.Reactor is by peristaltic pump 8 water inlets, control the sewage volume that enters the 2nd hydrolysis area 1 and the 1st hydrolysis area 2 by liquid meter 10 (registration of setting two under meters is than about 1), anaerobic hydrolysis reaction removal most COD takes place at the 2nd hydrolysis area 1 and produces an amount of voltaile fatty acid in sewage; Sewage enters aerobic nitrification district 3 through the 1st hydrolysis area 2 backs by overflow weir; In aerobic nitrification district 3, aeration pump 12 is often opened, and by the suitable aeration rate of gas meter control, half nitrated and nitration reaction takes place the sewage after the hydrolysis; The sewage of the 2nd hydrolysis area 1 and aerobic nitrification zone 3 is 15 realization mud-water separation in the mud recirculating zone, and sewage has entered denitrifying ammoxidation reaction zone 4 by overflow weir; Contain a spot of voltaile fatty acid, ammonia nitrogen, nitrate nitrogen and nitrous acid nitrogen in the sewage this moment, utilize voltaile fatty acid that the part nitrate nitrogen is become nitrous acid nitrogen or nitrogen eliminating on denitrifying ammoxidation reaction zone 4 heterotrophic denitrification bacteriums, anaerobic ammonia oxidizing bacteria becomes nitrogen by venting port 13 eliminatings by the Anammox reaction with nitrous acid nitrogen and ammonia nitrogen, keeps pressing in the reactor outer strongly consistent; Sewage is after treatment got rid of through effluent weir 18.
Claims (4)
1. the integrated hydrolysis-denitrifying ammoxidation process of low ratio of carbon to ammonium waste water is handled in a less energy-consumption, it is characterized in that:
A) reactor is made up of the 1st hydrolysis area (2), the 2nd hydrolysis area (1), aerobic nitrification district (3), denitrifying ammoxidation reaction zone (4);
B) the 1st hydrolysis area (2) and aerobic nitrification district (3) series operation are for the denitrifying ammoxidation reaction of denitrifying ammoxidation reaction zone (4) provides electron acceptor(EA);
C) the 1st hydrolysis area (2) and the 2nd hydrolysis area (1) parallel running are by liquid meter (10) control water inlet ratio;
D) the 2nd hydrolysis area (1) water outlet enters denitrifying ammoxidation reaction zone (4), is denitrifying ammoxidation reaction voltaile fatty acid and ammonia nitrogen.
2. the integrated hydrolysis-denitrifying ammoxidation process of low ratio of carbon to ammonium waste water is handled in a kind of less energy-consumption according to claim 1, it is characterized by: the 1st hydrolysis area (2), the 2nd hydrolysis area (1) and denitrifying ammoxidation reaction zone (4) top seal, top cover is provided with venting port (13).
3. the integrated hydrolysis-denitrifying ammoxidation process of low ratio of carbon to ammonium waste water is handled in a kind of less energy-consumption according to claim 1, it is characterized by: denitrifying ammoxidation reaction zone (4) is provided with non-woven fabrics filler (7), and the 1st hydrolysis area (2), the 2nd hydrolysis area (1) and aerobic nitrification zone (3) are provided with semi soft packing (6).
4. the integrated hydrolysis-denitrifying ammoxidation process of low ratio of carbon to ammonium waste water is handled in a kind of less energy-consumption according to claim 1, it is characterized by: the volume of the 1st hydrolysis area (2) and aerobic nitrification zone (3) can pass through dividing plate (5) evolution to be regulated.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249495A (en) * | 2011-06-24 | 2011-11-23 | 浙江大学 | Device for carrying out ecological treatment on sewage with low carbon nitrogen ratio |
| CN102690013A (en) * | 2011-03-21 | 2012-09-26 | 王鹤立 | Vertical ecological greenhouse technology for decentralized domestic wastewater treatment and resource recovery |
| CN103288211A (en) * | 2013-05-12 | 2013-09-11 | 北京工业大学 | Device and method for treating low-C/N (carbon/nitrogen) ratio urban sewage by an anoxic/aerobic SBR-DEAMOX (denitrifying ammonium oxidation) denitrification process |
| CN104291443A (en) * | 2014-10-12 | 2015-01-21 | 北京工业大学 | Device and method for treating low-carbon-nitrogen-ratio urban sewage by virtue of half nitrification/partial denitrification/anaerobic ammonium oxidation |
| CN104326631A (en) * | 2014-11-05 | 2015-02-04 | 东北电力大学 | Gas wastewater treatment method characterized by returning aerobiotic effluent to anaerobic reactor to be diluted and subjected to anaerobic ammonia oxidation |
| CN106348440A (en) * | 2016-09-21 | 2017-01-25 | 武汉理工大学 | Method for measuring flora denitrification contribution rate and activity of full-autotrophic denitrification process |
| CN111392865A (en) * | 2020-04-09 | 2020-07-10 | 浙江德慧环保科技有限公司 | Method for treating organic amine wastewater |
| CN112678952A (en) * | 2020-11-09 | 2021-04-20 | 北京建筑大学 | Treatment method of petrochemical industrial refining wastewater |
| CN112939338A (en) * | 2021-01-27 | 2021-06-11 | 辽宁工业大学 | Low carbon nitrogen ratio sewage denitrification device |
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| JP2005334809A (en) * | 2004-05-28 | 2005-12-08 | Chugoku Electric Power Co Inc:The | Method and system for treating petroleum burned ash |
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| JP2005334809A (en) * | 2004-05-28 | 2005-12-08 | Chugoku Electric Power Co Inc:The | Method and system for treating petroleum burned ash |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102690013A (en) * | 2011-03-21 | 2012-09-26 | 王鹤立 | Vertical ecological greenhouse technology for decentralized domestic wastewater treatment and resource recovery |
| CN102249495B (en) * | 2011-06-24 | 2012-07-18 | 浙江大学 | Device for carrying out ecological treatment on sewage with low carbon nitrogen ratio |
| CN102249495A (en) * | 2011-06-24 | 2011-11-23 | 浙江大学 | Device for carrying out ecological treatment on sewage with low carbon nitrogen ratio |
| CN103288211A (en) * | 2013-05-12 | 2013-09-11 | 北京工业大学 | Device and method for treating low-C/N (carbon/nitrogen) ratio urban sewage by an anoxic/aerobic SBR-DEAMOX (denitrifying ammonium oxidation) denitrification process |
| CN103288211B (en) * | 2013-05-12 | 2014-09-24 | 北京工业大学 | Device and method for treating low-C/N (carbon/nitrogen) ratio urban sewage by an anoxic/aerobic SBR-DEAMOX (denitrifying ammonium oxidation) denitrification process |
| CN104291443B (en) * | 2014-10-12 | 2015-12-30 | 北京工业大学 | The apparatus and method of half nitrated/part denitrification/Anammox process low ratio of carbon to ammonium municipal effluent |
| CN104291443A (en) * | 2014-10-12 | 2015-01-21 | 北京工业大学 | Device and method for treating low-carbon-nitrogen-ratio urban sewage by virtue of half nitrification/partial denitrification/anaerobic ammonium oxidation |
| CN104326631A (en) * | 2014-11-05 | 2015-02-04 | 东北电力大学 | Gas wastewater treatment method characterized by returning aerobiotic effluent to anaerobic reactor to be diluted and subjected to anaerobic ammonia oxidation |
| CN104326631B (en) * | 2014-11-05 | 2016-04-27 | 东北电力大学 | A kind of outputted aerobic water is back to anaerobic reactor dilution and the method for Anammox gas treatment waste water |
| CN106348440A (en) * | 2016-09-21 | 2017-01-25 | 武汉理工大学 | Method for measuring flora denitrification contribution rate and activity of full-autotrophic denitrification process |
| CN111392865A (en) * | 2020-04-09 | 2020-07-10 | 浙江德慧环保科技有限公司 | Method for treating organic amine wastewater |
| CN112678952A (en) * | 2020-11-09 | 2021-04-20 | 北京建筑大学 | Treatment method of petrochemical industrial refining wastewater |
| CN112678952B (en) * | 2020-11-09 | 2022-04-12 | 北京建筑大学 | Treatment method of petrochemical industrial refining wastewater |
| CN112939338A (en) * | 2021-01-27 | 2021-06-11 | 辽宁工业大学 | Low carbon nitrogen ratio sewage denitrification device |
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