CN102690012A - Organism remediation method of underground water nitrate pollution for solving nitrite accumulation problem - Google Patents
Organism remediation method of underground water nitrate pollution for solving nitrite accumulation problem Download PDFInfo
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- CN102690012A CN102690012A CN2011100675554A CN201110067555A CN102690012A CN 102690012 A CN102690012 A CN 102690012A CN 2011100675554 A CN2011100675554 A CN 2011100675554A CN 201110067555 A CN201110067555 A CN 201110067555A CN 102690012 A CN102690012 A CN 102690012A
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Abstract
The invention relates to a method for remediating nitrate pollution in underground water, and the advantage of the method lies in that nitrite accumulation problem caused by conventional microorganism remediation methods is solved. According to the method, a biological reaction wall portion and an aerobic well portion are comprised. The biological reaction wall consists of a solid-phase carrier medium serving as an organic carbon source that can slowly release organic carbon and oxygen capturing agent. The aerobic well is filled with solid filler that can slowly release oxygen, or a suspension of a medium that slowly release oxygen is poured into the aerobic well. The oxygen is released into underground environment by using the aerobic well, so that dissolved oxygen in the environment is improved. Nitration is carried out under an aerobic condition, so that accumulated nitrite is converted into a small mount of nitrate again. The method effectively solves the problem of excessive nitrite in effluent, nitrate content in the final effluent is small, and the concentration of the nitrate in the final effluent is lower than the III classification standard in Quality standard for ground water GB/T 14848-1993, so that no secondary pollution on the underground water will happen.
Description
Technical field
The present invention relates to polluted underground water recovery technique field, particularly the phreatic mikrobe of pollution of nitrate nitrogen is repaired back nitrite accumulation way to solve the problem.
Background technology
Along with the fast development of modernization industry, nitrate in groundwater is polluted and is on the rise.Nitrate salt has serious harm to HUMAN HEALTH; If after having drunk the underground water that contains the high density nitrate nitrogen; A large amount of nitrate salt is nitrite by microbial transformation in gi tract and saliva in the water, and nitrite can make that the ferrous iron in haemoglobin molecule oxidation, the haemoglobin molecule becomes ferric iron in the blood, thereby oxyphorase has been lost the ability of carrying oxygen; Make humans and animals suffer from methemoglobinemia because of anoxic, serious causing death died.Nitrate salt in the underground water makes human carcinogen's danger in addition in addition.
Therefore, the removal to azotate pollution in the underground water has both at home and abroad launched big quantity research, and its removal method mainly contains methods such as materialization (IX, electrodialysis, r-o-etc.), biological denitrification, chemical denitrification.These methods respectively have relative merits, all can remove the nitrate salt in the underground water to some extent.Because biological treatment has efficient characteristics, and obtained using widely.But the traditional biological repairing method also exists problems when removing the nitrate in groundwater pollution.Have treat effluent secondary pollution, the water-bearing media that earn widespread respect in the research at home and abroad at present are prone to obstruction, N
2Problems such as O gas contamination environment.Meanwhile, also less relatively at present to the research of nitrite accumulation problem in the denitrification process, how to control its generation in groundwater environment and remain further to be solved.
Summary of the invention
The object of the invention is to overcome the shortcoming of nitrite accumulation in the existing phreatic mikrobe recovery technique of azotate pollution, and a kind of new efficient, economically viable groundwater azotate recovery technique is provided.This technology is made up of biological respinse wall and aerobic well two portions; Receive the underground water of azotate pollution at first to get into the biological respinse wall, under anoxia condition within the walls, remove the nitrate salt in the underground water through denitrification along water (flow) direction; In the water outlet of biological respinse wall, still contain simultaneously a spot of nitrite; The water outlet that will contain nitrite again gets into aerobic well area, and nitrite is oxidized to nitrate salt through nitrification under aerobic condition, after this handles, contains a spot of nitrate salt in the water outlet; Its concentration is lower than three class standards among " groundwater quality standard " GB/T 14848-1993, can not cause secondary pollution to underground water.
The biological respinse wall is filled with the solid phase carrier medium that can slowly discharge organic carbon source; And add volume ratio be 1-3% catch the oxygen agent; Thereby create an anaerobic environment that denitrification process is carried out more completely and remove nitrate nitrogen, reduce the accumulation of nitrite simultaneously to a certain extent.The solid phase carrier medium that wherein can slowly discharge organic carbon source can be one or more compositions such as coal, micelle, nut-shell, organic synthesis material, biological ceramic particle.
The suspension-s of the medium of slow release of oxygen filled or in aerobic well, poured into by aerobic well by the solid packing of slow release of oxygen.
Slowly the solid packing composition of release of oxygen is MgO
2, CaO
2, coarse sand and KH
2PO
4MgO
2Account for the 15%-20% of gross weight, its effect is release of oxygen and suitable oxygen release cycle of improving total body medium; CaO
2Account for the 10%-15% of gross weight, its effect is release of oxygen and the cost that suitably reduces total body medium; Coarse sand accounts for the 60%-64% of gross weight, and its effect is the simulate formation water surrounding, improves the perviousness of medium, and its concrete particle diameter can be according to the local actual geological condition decision of engineering, and principle is to make medium farthest approach local geologic condition; KH
2PO
4Account for about the 1%-5% of total mass, its effect is to regulate because the pH that the oxygen release material causes changes, and the microorganism growth factor is provided to a certain extent.
Slowly the suspension-s composition of the medium of release of oxygen is MgO
2, CaO
2, KH
2PO
4Be respectively after 40%-55%, 30%-45%, 1%-5% mix according to the ratio of shared gross weight, stir into suspension-s according to 1: 1 mixed with the uncontaminated underground water in locality.
Beneficial effect of the present invention:
(1) biological respinse wall of the present invention is filled in the medium, except carrier and carbon source, has also added and has caught the oxygen agent, makes the denitrification in this stage carry out more thoroughly.
(2) fill medium MgO in the aerobic well of the present invention
2, CaO
2All adopt the material of cheap technical grade quality purity, the particle diameter of sand grains then decides according to geologic media local in the case history, so that aerobic well reduces the upset to local flow dynamic etc. to greatest extent.
Description of drawings
A kind of method System planes synoptic diagram of repairing the nitrate in groundwater pollution of Fig. 1
A kind of method system diagrammatic cross-section of repairing the nitrate in groundwater pollution of Fig. 2
Label declaration among the figure: the underground water of 1-azotate pollution, 2-biological respinse wall, the aerobic well of 3-
Embodiment
Underground water (1) current vertical direction along azotate pollution is provided with biological respinse wall (2); Be filled with the solid phase carrier medium that can slowly discharge organic carbon source within the walls; And add volume ratio be 1-3% catch the oxygen agent; Make to form anoxia condition within the walls, remove the nitrate salt in the underground water through denitrification; Still contain a spot of nitrite in the water outlet after biological respinse wall (2) is repaired; Adopt the mode of mechanical drilling well on the groundwater flow vertical direction of biological respinse wall (2) back, to dig a well again; In well, fill the solid packing or the direct suspension-s that in well, pours into the medium of slow release of oxygen of slow release of oxygen, form aerobic well (3).Under aerobic condition
A spot of nitrite is oxidized to nitrate salt through nitrification, contained a small amount of nitrate salt in the water outlet after this handles, and its concentration is lower than three class standards among " groundwater quality standard " GB/T 14848-1993, can not cause secondary pollution to underground water.
Claims (5)
1. groundwater azotate pollution biological renovation method that solves nitrite accumulation; It is characterized in that: receive the underground water (1) of azotate pollution at first to get into biological respinse wall (2) along water (flow) direction; Under anoxia condition within the walls; Remove the nitrate salt in the underground water through denitrification, in the water outlet of biological respinse wall, still contain a spot of nitrite simultaneously, the water outlet that will contain nitrite again gets into aerobic well (3) zone; Nitrite is oxidized to nitrate salt through nitrification under aerobic condition; After this handles, contain a spot of nitrate salt in the water outlet, its concentration is lower than three class standards among " groundwater quality standard " GB/T 14848-1993, can not cause secondary pollution to underground water.
2. a kind of groundwater azotate pollution biological renovation method that solves nitrite accumulation according to claim 1; It is characterized in that: said biological respinse wall is filled with the solid phase carrier medium that can slowly discharge organic carbon source, and add volume ratio be 1-3% catch the oxygen agent; The solid phase carrier medium that wherein can slowly discharge organic carbon source can be one or more compositions such as coal, micelle, nut-shell, organic synthesis material, biological ceramic particle.
3. a kind of groundwater azotate pollution biological renovation method that solves nitrite accumulation according to claim 1 is characterized in that: the suspension-s of the medium of slow release of oxygen filled or in aerobic well, poured into by said aerobic well by the solid packing of slow release of oxygen.
4. the solid packing of slow release of oxygen according to claim 3, it is characterized in that: composition is MgO
2, CaO
2, coarse sand and KH
2PO
4, the ratio of the shared gross weight of its each component is respectively about 15%-20%, 10%-15%, 60%-64%, 1%-5%.
5. the suspension-s of the medium of slow release of oxygen according to claim 3, it is characterized in that: composition is MgO
2, CaO
2, KH
2PO
4Be respectively after 40%-55%, 30%-45%, 1%-5% mix according to the ratio of shared gross weight, stir into suspension-s according to 1: 1 mixed with the uncontaminated underground water in locality.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100675554A CN102690012A (en) | 2011-03-21 | 2011-03-21 | Organism remediation method of underground water nitrate pollution for solving nitrite accumulation problem |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100675554A CN102690012A (en) | 2011-03-21 | 2011-03-21 | Organism remediation method of underground water nitrate pollution for solving nitrite accumulation problem |
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| CN102690012A true CN102690012A (en) | 2012-09-26 |
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ID=46855771
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| CN2011100675554A Pending CN102690012A (en) | 2011-03-21 | 2011-03-21 | Organism remediation method of underground water nitrate pollution for solving nitrite accumulation problem |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923798A (en) * | 2012-11-08 | 2013-02-13 | 中国环境科学研究院 | Device and method for repairing underground water ammonia nitrogen pollution in normal position and abnormal position combined mode |
| CN103214086A (en) * | 2013-05-13 | 2013-07-24 | 中国地质大学（北京） | Oxygen release filler used for aerobic biological repairing of groundwater pollution |
| CN103224286A (en) * | 2013-04-09 | 2013-07-31 | 清华大学 | Ecological barrier column and method for removing underground subsurface flow pollution |
| CN105347515A (en) * | 2015-12-09 | 2016-02-24 | 安徽师范大学 | Packing medium for permeable reactive barrier and application of packing medium to aspect of in-situ treatment on underground water nitrate pollution and method thereof |
| CN105800797A (en) * | 2016-05-11 | 2016-07-27 | 环境保护部南京环境科学研究所 | Modified cellulose controlled-release carbon material and permeable reactive barrier structure using same |
| CN105967374A (en) * | 2016-06-27 | 2016-09-28 | 安徽金联地矿科技有限公司 | Mine underground water treatment method |
| CN109650539A (en) * | 2019-02-21 | 2019-04-19 | 天津友爱环保科技有限公司 | Biologic packing material and its preparation method and application for removing groundwater azotate |
| CN109734197A (en) * | 2019-01-24 | 2019-05-10 | 天津友爱环保科技有限公司 | A kind of processing material of nitrogenous acid waste water and its application |
| WO2023165388A1 (en) * | 2022-03-01 | 2023-09-07 | 南京大学 | Deep biological denitrification strengthening and endocrine disrupting toxicity reducing method |
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| WO2003106351A1 (en) * | 2002-06-18 | 2003-12-24 | Sasol Technology (Pty) Ltd | Method of purifying fischer-tropsch derived water |
| CN101066809A (en) * | 2007-04-17 | 2007-11-07 | 天津大学 | Organism fixing and permeating reaction wall system and stuffing for repairing polluted underground water |
| CN101428906A (en) * | 2008-12-12 | 2009-05-13 | 天津大学 | System and method for restoring triclene polluted groundwater |
| KR20100107752A (en) * | 2009-03-26 | 2010-10-06 | 현대제철 주식회사 | Method for removing of perchlorate ion and nitrate ion in underground water |
| CN101880082A (en) * | 2010-01-18 | 2010-11-10 | 王鹤立 | Groundwater nitrate pollution remediation technology based on semi-inert solid-phase carbon source carrier |
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2011
- 2011-03-21 CN CN2011100675554A patent/CN102690012A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2003106351A1 (en) * | 2002-06-18 | 2003-12-24 | Sasol Technology (Pty) Ltd | Method of purifying fischer-tropsch derived water |
| CN101066809A (en) * | 2007-04-17 | 2007-11-07 | 天津大学 | Organism fixing and permeating reaction wall system and stuffing for repairing polluted underground water |
| CN101428906A (en) * | 2008-12-12 | 2009-05-13 | 天津大学 | System and method for restoring triclene polluted groundwater |
| KR20100107752A (en) * | 2009-03-26 | 2010-10-06 | 현대제철 주식회사 | Method for removing of perchlorate ion and nitrate ion in underground water |
| CN101880082A (en) * | 2010-01-18 | 2010-11-10 | 王鹤立 | Groundwater nitrate pollution remediation technology based on semi-inert solid-phase carbon source carrier |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923798A (en) * | 2012-11-08 | 2013-02-13 | 中国环境科学研究院 | Device and method for repairing underground water ammonia nitrogen pollution in normal position and abnormal position combined mode |
| CN102923798B (en) * | 2012-11-08 | 2014-05-14 | 中国环境科学研究院 | Device and method for repairing underground water ammonia nitrogen pollution in normal position and abnormal position combined mode |
| CN103224286A (en) * | 2013-04-09 | 2013-07-31 | 清华大学 | Ecological barrier column and method for removing underground subsurface flow pollution |
| CN103214086A (en) * | 2013-05-13 | 2013-07-24 | 中国地质大学（北京） | Oxygen release filler used for aerobic biological repairing of groundwater pollution |
| CN105347515A (en) * | 2015-12-09 | 2016-02-24 | 安徽师范大学 | Packing medium for permeable reactive barrier and application of packing medium to aspect of in-situ treatment on underground water nitrate pollution and method thereof |
| CN105800797A (en) * | 2016-05-11 | 2016-07-27 | 环境保护部南京环境科学研究所 | Modified cellulose controlled-release carbon material and permeable reactive barrier structure using same |
| CN105967374A (en) * | 2016-06-27 | 2016-09-28 | 安徽金联地矿科技有限公司 | Mine underground water treatment method |
| CN109734197A (en) * | 2019-01-24 | 2019-05-10 | 天津友爱环保科技有限公司 | A kind of processing material of nitrogenous acid waste water and its application |
| CN109650539A (en) * | 2019-02-21 | 2019-04-19 | 天津友爱环保科技有限公司 | Biologic packing material and its preparation method and application for removing groundwater azotate |
| WO2023165388A1 (en) * | 2022-03-01 | 2023-09-07 | 南京大学 | Deep biological denitrification strengthening and endocrine disrupting toxicity reducing method |
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Application publication date: 20120926 |