CN103172228A - In-situ repair method of bottom mud in city watercourse - Google Patents
In-situ repair method of bottom mud in city watercourse Download PDFInfo
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- CN103172228A CN103172228A CN2013100651578A CN201310065157A CN103172228A CN 103172228 A CN103172228 A CN 103172228A CN 2013100651578 A CN2013100651578 A CN 2013100651578A CN 201310065157 A CN201310065157 A CN 201310065157A CN 103172228 A CN103172228 A CN 103172228A
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Abstract
The invention relates to an in-situ repair method of bottom mud in a city watercourse. The method specially comprises the steps of: vertically placing straight tubular cellular filler in bottom mud in a watercourse for in-situ fixing the bottom mud; then, casting a bottom mud repairer to a water body paved with the cellular filler, wherein the repairer sinks into the water body and falls into a filler tube of the cellular filler; under protection of the cellular filler, performing in-situ repair of bottom mud pollution through adsorbing and biological degrading effects of the bottom mud repairer. The method provided by the invention can establish good conditions for a healthy biological system of the watercourse, so that the water body is purified fundamentally. The method has the characteristics of good repairing effect, low cost, simpleness in operation, convenience in construction and maintenance and management, no influence on shipping function of the watercourse, no secondary pollution risk and the like.
Description
Technical field
The invention belongs to city river Pollution abatement technical field, particularly a kind of method of city river sediment in-situ reparation.
Background technology
Deposition due to long-term external source import and hydrobiont residue, the enrichment of city river bed mud a large amount of pollutents, as the nutrition such as heavy metal, N, P and hardly degraded organic substance etc., become the important secondary pollution source (presence of pollution sources) of water pollution, to human health and the serious threat of environment structure.
At present, according to the difference of control method principle, the release control technology of pollution of river bed mud can be divided into physics, chemistry and biological process.The physical control technology mainly comprises dredging and cladding process, this method instant effect, but quantities is large, the reason somewhat expensive, and system has destructiveness to Benthic ecology, and application is subject to the hydraulics restriction.The chemical repair method principle is the reactions such as chemicals and pollutent generation oxidation, reduction, precipitation, polymerization, pollutent is separated from bed mud, Degradation and Transformation becomes low toxicity or the control measures of nontoxic chemical form, this restorative procedure very easily causes secondary pollution, and cost is higher.Biological process is to utilize biological life Metabolic activity to reduce to be present in the concentration of hazardous and noxious substances in environment or to make it fully innoxious, thereby makes contaminate environment can partly or completely return to the process of virgin state.Compare with the physics and chemistry restorative procedure, biological renovation method has cost saving, does not destroy original ecology and detersive efficiency advantages of higher, therefore is rapidly developed.Yet existing river sediment in-situ bioremediation technology owing to being subjected to water impact and diluting effect, makes the microbial biomass minimizing on river bottom mud surface mainly by adding microbial strains to bed mud, often is difficult to reach the repairing effect of expectation.
Summary of the invention
The object of the invention is to overcome the deficiency that existing bed mud bioremediation technology exists a kind of method that provides simple, efficient, lasting city river sediment in-situ to repair.
For achieving the above object, technical scheme of the present invention is: in river bottom mud, honeycomb padding vertically is placed in river bottom mud, is used for the original position of river bottom mud is fixed, honeycomb filler upper end exceeds river bottom mud plane 5-10cm; Then sediment repairing agent is added in the water body that is equipped with honeycomb padding, sediment repairing agent falls in the filling tube of honeycomb padding after sinking to water body, sediment repairing agent by absorption and biological degradation, is realized the original position of sediment pollution is purified under the protection of honeycomb padding; Wherein: described sediment repairing agent be load denitrifying bacteria is arranged is main sorbing material, the sediment repairing agent dosage is that the dosage of every square metre of waters 1 ~ 5L evenly adds.
In the present invention, the cellar area of described honeycomb filler is 1 ~ 3m
2, be square or circle, optional commercially available straight tube honeycomb filler, or tied up by natural mao bamboon thick bamboo tube and make.Select the ring of thick bamboo tube to get through, thick bamboo tube diameter 3-10cm.
In the present invention, when the honeycomb filler is laid, depth of penetration is suitably adjusted according to shale and the mud layer thickness situation of bed mud, and is general, and honeycomb filler upper end exceeds river bottom mud plane 5-10cm.
In the present invention, described sediment repairing agent is that denitrifying bacteria is arranged is main sorbing material in load, its preparation method is: sorbing material is put in the anaerobic reactor that is added with river bottom mud, take city domestic sewage as matrix, carry out the sorbing material biofilm by anaerobically fermenting, stand-by through filtering after the biofilm maturation.
In the present invention, described sorbing material is one or more mixtures of zeolite, haydite and gac, granularity 5-10mm.
Compared with prior art, the present invention has following beneficial effect:
1, the use of honeycomb filler can realize sediment in-situ is fixed, and for sediment repairing agent provides the satisfactory stability environment, has also created favourable condition for the foundation of the river channel natural ecosystem simultaneously, thereby has fundamentally eliminated water pollution.
2, the bed mud remediation microbial inoculum is the indigenous microorganism microbial inoculum, and adaptive capacity to environment is strong, and its fixed growth is on sorbing material, effectively improved microorganism concn, also prevent the loss of thalline, can give full play to absorption and biological degradation function in application, improved the bed mud repairing effect.
3, the blocking setting of honeycomb filler, the management in constructability and later stage and maintenance.
4, this restorative procedure is simple to operate, and speed of application is fast, and cost is low, and repairing effect is good, does not affect the river course navigation function, and the non-secondary pollution risk.
Embodiment
Further illustrate the present invention below by embodiment.
Embodiment 1
Get some diameter 5cm, the thick bamboo tube of length 15cm is all got through the ring of thick bamboo tube, and to be bundled into area be 1.5m
2Circular honeycomb filler unit, then directly render in the bed mud that the degree of depth is about 10cm, thick bamboo tube exceeds approximately 5cm of bed mud.
With load have the granularity of bed mud indigenous microorganism be the gac sediment repairing agent of 5mm by the dosage of every square metre of 2L, be added in the thick bamboo tube of honeycomb filler unit, carry out the original position repairing test of bed mud.
After administering through 7 days, the CODcr of bed mud, NH
4 +-N and TP concentration descend respectively 37.2%, 41.6% and 33.3%.
Embodiment 2
Getting some pipe diameters is the commercially available polyvinyl chloride material straight tube honeycomb filler of 4cm, is cut into length 20cm, and being bundled into area is 2m
2Square honeycomb filler unit, then directly render in the bed mud that the degree of depth is about 10cm, filler exceeds approximately 10cm of bed mud.
It is that the zeolite sediment repairing agent of 4mm is added in the thick bamboo tube of honeycomb filler unit by the dosage of every square metre of 2L that load is had the granularity of bed mud indigenous microorganism, carries out the original position repairing test of bed mud.
After administering through 7 days, the CODcr of bed mud, NH
4 +-N and TP concentration descend respectively 35.4%, 44.1% and 37.6%.
By above-described embodiment data as can be known, city river sediment in-situ remediation method of the present invention has good effect.
Claims (4)
1. the city river sediment in-situ method of repairing, its feature in concrete steps is: in river bottom mud, honeycomb padding vertically is placed in river bottom mud, is used for the original position of river bottom mud is fixed, honeycomb filler upper end exceeds river bottom mud plane 5-10cm; Then sediment repairing agent is added in the water body that is equipped with honeycomb padding, sediment repairing agent sinks to the filling tube that falls into honeycomb padding after water body, sediment repairing agent by absorption and biological degradation, is realized the original position of sediment pollution is purified under the protection of honeycomb padding; Wherein: described sediment repairing agent be load denitrifying bacteria is arranged is main sorbing material, the sediment repairing agent dosage is that the dosage of every square metre of waters 1 ~ 5L evenly adds.
2. the city river sediment in-situ according to claim 1 method of repairing, the cellar area that it is characterized in that described honeycomb filler is 1 ~ 3m
2, be square or circle, optional commercially available straight tube honeycomb filler, or tied up by natural mao bamboon thick bamboo tube and make; Select the ring of thick bamboo tube to get through, thick bamboo tube diameter 3-10cm.
3. the city river sediment in-situ according to claim 1 method of repairing, it is characterized in that described sediment repairing agent is that denitrifying bacteria is arranged is main sorbing material in load, its preparation method is: sorbing material is put in the anaerobic reactor that is added with river bottom mud, take city domestic sewage as matrix, carry out the sorbing material biofilm by anaerobically fermenting, stand-by through filtering after the biofilm maturation.
4. the method for city river sediment in-situ reparation according to claim 3, is characterized in that described sorbing material is one or more mixtures of zeolite, haydite and gac, granularity 5-10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310065157.8A CN103172228B (en) | 2013-03-01 | 2013-03-01 | In-situ repair method of bottom mud in city watercourse |
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| CN201310065157.8A CN103172228B (en) | 2013-03-01 | 2013-03-01 | In-situ repair method of bottom mud in city watercourse |
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| CN103172228A true CN103172228A (en) | 2013-06-26 |
| CN103172228B CN103172228B (en) | 2014-04-02 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103359886A (en) * | 2013-07-29 | 2013-10-23 | 南京大学 | Comprehensive technology for ecological restoration of low-pollution river water |
| CN104129894A (en) * | 2014-07-02 | 2014-11-05 | 西安建筑科技大学 | Method for in-situ continuous restoration of serious contamination sediment by covering single layer modified membrane-forming zeolite |
| CN105060498A (en) * | 2015-07-20 | 2015-11-18 | 成都市昊麟科技发展有限责任公司 | Biological strain embedding device for pre-processing biological reaction tank and processing technology |
| CN108218171A (en) * | 2018-02-06 | 2018-06-29 | 河海大学 | The in-situ remediation method of huge reservoir polluted bed mud under a kind of anaerobic in low temperature environment |
| CN108751570A (en) * | 2018-05-08 | 2018-11-06 | 扬州市海诚生物技术有限公司 | A kind of chemical remediation combines biological prosthetic river regulation method |
| CN109133519A (en) * | 2018-09-20 | 2019-01-04 | 河南省科学院地理研究所 | A kind of river bottom mud ecological treatment method |
| CN109607940A (en) * | 2018-12-12 | 2019-04-12 | 广州市水电建设工程有限公司 | A kind of river restorative procedure |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103359886A (en) * | 2013-07-29 | 2013-10-23 | 南京大学 | Comprehensive technology for ecological restoration of low-pollution river water |
| CN103359886B (en) * | 2013-07-29 | 2014-08-06 | 南京大学 | Comprehensive technology for ecological restoration of low-pollution river water |
| CN104129894A (en) * | 2014-07-02 | 2014-11-05 | 西安建筑科技大学 | Method for in-situ continuous restoration of serious contamination sediment by covering single layer modified membrane-forming zeolite |
| CN104129894B (en) * | 2014-07-02 | 2016-03-30 | 西安建筑科技大学 | Cover the method that monolayer-modified biofilm zeolite in-situ continues to repair serious pollution bed mud |
| CN105060498A (en) * | 2015-07-20 | 2015-11-18 | 成都市昊麟科技发展有限责任公司 | Biological strain embedding device for pre-processing biological reaction tank and processing technology |
| CN108218171A (en) * | 2018-02-06 | 2018-06-29 | 河海大学 | The in-situ remediation method of huge reservoir polluted bed mud under a kind of anaerobic in low temperature environment |
| CN108218171B (en) * | 2018-02-06 | 2021-04-13 | 河海大学 | In-situ remediation method for polluted bottom mud of deep water reservoir in low-temperature anaerobic environment |
| CN108751570A (en) * | 2018-05-08 | 2018-11-06 | 扬州市海诚生物技术有限公司 | A kind of chemical remediation combines biological prosthetic river regulation method |
| CN109133519A (en) * | 2018-09-20 | 2019-01-04 | 河南省科学院地理研究所 | A kind of river bottom mud ecological treatment method |
| CN109607940A (en) * | 2018-12-12 | 2019-04-12 | 广州市水电建设工程有限公司 | A kind of river restorative procedure |
| CN109607940B (en) * | 2018-12-12 | 2021-08-24 | 广州市水电建设工程有限公司 | Riverway restoration method |
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| CN103172228B (en) | 2014-04-02 |
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Inventor after: Jin Jian Inventor after: Zhao Jinling Inventor after: Zhou Guangfu Inventor after: Jin Xin Inventor after: Wang Baoju Inventor before: Wang Xuejiang Inventor before: Bo Yunjie Inventor before: Yang Lianzhen Inventor before: Yan Xiangbo Inventor before: Zhao Jianfu Inventor before: Yin Daqiang Inventor before: Cheng Shuiping Inventor before: Xia Siqing |
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Effective date of registration: 20150915 Address after: 100031 Xicheng District City, the revitalization of the door in the street in the street, 26, 28, 7, floor, block 30, F6 Patentee after: ELIONER ECOLOGICAL REMEDIATION CO., LTD. Address before: 200092 Shanghai City, Yangpu District Siping Road No. 1239 Patentee before: Tongji University |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20210301 |
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| CF01 | Termination of patent right due to non-payment of annual fee |