CN102619237A - Method for preventing nitrate from polluting underground water - Google Patents
Method for preventing nitrate from polluting underground water Download PDFInfo
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- CN102619237A CN102619237A CN2012100963804A CN201210096380A CN102619237A CN 102619237 A CN102619237 A CN 102619237A CN 2012100963804 A CN2012100963804 A CN 2012100963804A CN 201210096380 A CN201210096380 A CN 201210096380A CN 102619237 A CN102619237 A CN 102619237A
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Abstract
The invention relates to a method for preventing nitrate from polluting underground water. The method includes laying a layer of waterproof and breathable materials on the lower portion of a cultivation soil layer or a livestock and poultry excrement yard; preventing infiltration of nitrogenous rainwater or irrigation water by the aid of the special breathable and waterproof performances of the waterproof and breathable materials; and collecting and guiding the nitrogenous rainwater or irrigation water into a nearby reservoir to realize recycle of nitrogenous fertilizer and the water. The method has the advantages that due to the stopping effect of the layer of waterproof and breathable materials, nitrate pollution of the underground water is prevented, the collected nitrogenous rainwater and irrigation water can be recycled, the application quantity of nitrogenous fertilizer and consumption of irrigation water for crops are greatly reduced, and the method is particularly applicable to intensive crop farming and the intensive breeding industry.
Description
Technical field
The present invention relates to a kind of method that prevents groundwater azotate pollution, belong to the resource environment field.
Background technology
In recent years and since chemical fertilizer use the air storage with feces of livestock and poultry in a large number, cause China's groundwater azotate pollution to be on the rise, China nearly 3,500 ten thousand people is at present drinking the water that contains high nitrate.The people has drunk by the underground water of azotate pollution serious harm is healthy; Nitrate is converted to nitrite nitrogen through behind the digestive system in human body; The latter can combine with hemoglobin to form ferrihemoglobin, makes blood lose oxygen carrying capacity, causes patient respiratory difficulty even dead; Nitrite can also synthesize the strong carcinogen nitrosamine in human body, can bring out disease of digestive system.The reason that causes groundwater azotate pollution mainly is a pollution of area source, and existing research shows that the excessive nitrogenous fertilizer of using only has 30～40% by the crop absorption utilization, and most of nitrogenous fertilizer gets into underground water through leaching.In addition; Because developing rapidly of animal husbandry, aquaculture; A large amount of feces of livestock and poultry air storages, the effect of under leaching, oozing of contained nitrogen gets in the underground water and is converted into nitrate in these soiled litters, causes the nitrate in groundwater content around farm or the plant obviously to exceed standard.
Underground water is in case by azotate pollution, then be difficult to administer.The removal method of groundwater azotate is divided into physical-chemical process, chemical method and bioanalysis substantially at present.Physical-chemical process mainly contains distillation, electrodialysis, counter-infiltration, ion-exchange etc., and disposal cost is high, the pre-treatment requirement is high, be prone to produce secondary pollution problems owing to exist, and on using, receives certain restriction; Chemical method is to utilize reducing agent that nitrate reduction in the water is nitrogen, because relatively stricter to the requirement of reaction condition, accessory substance is prone to cause secondary pollution etc., and it is used and also receives certain restriction; Bioanalysis is to utilize denitrifying bacterium that nitrate is degraded to the bioprocess of nitrogen, and is still under test at present.
Present various treatment technologies all are that the nitrate in the water is handled as a kind of pollutant, and in fact nitrate is one of important source of the necessary nitrogenous fertilizer of plant growing.Therefore, those are not got into underground water by the nitrate of plant absorbing in the soil if can stop through appropriate method, and it is collected, and then not only can prevent phreatic azotate pollution, and can realize not being absorbed the cycling and reutilization of nitrate.
Summary of the invention
The objective of the invention is the ventilative and fluid-tight property of utilizing waterproof ventilative material to have; One deck waterproof ventilative material is laid in bottom in anthropogenic soil layer or feces of livestock and poultry yard; Stop the following of nitrogenous rainwater or irrigation water to ooze; Near reservoir is collected and imported to nitrogenous rainwater or irrigation water, realize nitrogenous fertilizer and water reuse.
For achieving the above object; The present invention takes following technical scheme: the anthropogenic soil of at first removing selection area; The bottom of exposing the anthropogenic soil layer; Waterproof ventilative material evenly is tiled in the bottom of anthropogenic soil layer, and the aqueduct of will boring a hole simultaneously is arranged on the waterproof ventilative material layer, again anthropogenic soil is filled out go back to original zone again.Near selection area, excavate the antiseepage reservoir, utilize aqueduct that the rainwater or the irrigation water of the interception of waterproof ventilative material layer are introduced reservoir, cycling and reutilization.
The invention has the advantages that: the interception function through the waterproof ventilative material layer not only prevented phreatic azotate pollution, and the nitrogenous rainwater of collecting can be greatly reduced amount of application of nitrogen fertilizer and the irrigation water capacity of crops by utilization again with irrigation water.The present invention is suitable for the use of intensive cropping industry and aquaculture especially.
Description of drawings
Fig. 1 is a structural representation elevation of the present invention.
Fig. 2 is a structural representation vertical view of the present invention.
Fig. 3 is an A-A sectional drawing of the present invention.
Among the figure: (1) anthropogenic soil layer, (2) waterproof ventilative material layer, (3) aqueduct, (4) reservoir.
The specific embodiment
Below in conjunction with Fig. 1, Fig. 2 and Fig. 3 the present invention is further specified.
At first remove the anthropogenic soil layer (1) of selection area; The bottom of exposing anthropogenic soil layer (1); Waterproof ventilative material evenly is tiled in the bottom of anthropogenic soil layer (1), and the aqueduct (3) of will boring a hole simultaneously is arranged on the waterproof ventilative material layer (2), again anthropogenic soil is filled out go back to original zone again.Near selection area, excavate antiseepage reservoir (4), utilize aqueduct (3) that the rainwater or the irrigation water of waterproof ventilative material layer (2) interception are introduced reservoir (4), cycling and reutilization.
Farming soil horizon (1) thickness is confirmed according to the crops needs of being planted among the present invention; Waterproof ventilative material layer (2) thickness is confirmed according to anthropogenic soil layer (1) thickness and the crops of being planted; Waterproof ventilative material layer (2) can be a level; Also the gradient can be arranged slightly as required, aqueduct (3) also can be designed to diversion canal according to local water conservancy condition.
Claims (3)
1. method that prevents groundwater azotate pollution; Be to lay one deck waterproof ventilative material in the bottom of anthropogenic soil layer or feces of livestock and poultry yard; Ventilative and the fluid-tight property of utilizing waterproof ventilative material to have stops the following of nitrogenous rainwater or irrigation water to ooze, and near reservoir is collected and imported to nitrogenous rainwater or irrigation water; Both prevent phreatic azotate pollution, realized nitrogenous fertilizer and water reuse again.
2. a kind of method that prevents groundwater azotate pollution according to claim 1; It is characterized in that: the waterproof ventilative material layer thickness is confirmed according to anthropogenic soil layer thickness and the crops of being planted; The waterproof ventilative material layer can be a level, also the gradient can be arranged slightly as required.
3. a kind of method that prevents groundwater azotate pollution according to claim 1 is characterized in that: aqueduct also can be designed to diversion canal according to local water conservancy condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100963804A CN102619237A (en) | 2012-03-29 | 2012-03-29 | Method for preventing nitrate from polluting underground water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100963804A CN102619237A (en) | 2012-03-29 | 2012-03-29 | Method for preventing nitrate from polluting underground water |
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| Publication Number | Publication Date |
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| CN102619237A true CN102619237A (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100963804A Pending CN102619237A (en) | 2012-03-29 | 2012-03-29 | Method for preventing nitrate from polluting underground water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045074A (en) * | 2019-03-19 | 2019-07-23 | 广东筑奥生态环境股份有限公司 | The pollution source discrimination of emerging pollutant and application in a kind of ground water regime |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040228689A1 (en) * | 2003-05-15 | 2004-11-18 | Stegemeier George L. | Soil remediation with heated soil |
| CN101138294A (en) * | 2006-09-08 | 2008-03-12 | 沧州市农林科学院 | High-water level halomorphic soil region selective controlling and greening technique |
| CN101283656A (en) * | 2008-06-11 | 2008-10-15 | 沧州市农林科学院 | Shallow water level double salt-affected soil raw soil planting and greening method |
| CN101836527A (en) * | 2010-04-13 | 2010-09-22 | 启东建筑集团山水园林建设有限公司 | Facility for improving landscaping water and soil in saline land |
| CN202046934U (en) * | 2011-03-08 | 2011-11-23 | 北京仁创科技集团有限公司 | Artificial wetland water body treatment system |
-
2012
- 2012-03-29 CN CN2012100963804A patent/CN102619237A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040228689A1 (en) * | 2003-05-15 | 2004-11-18 | Stegemeier George L. | Soil remediation with heated soil |
| CN101138294A (en) * | 2006-09-08 | 2008-03-12 | 沧州市农林科学院 | High-water level halomorphic soil region selective controlling and greening technique |
| CN101283656A (en) * | 2008-06-11 | 2008-10-15 | 沧州市农林科学院 | Shallow water level double salt-affected soil raw soil planting and greening method |
| CN101836527A (en) * | 2010-04-13 | 2010-09-22 | 启东建筑集团山水园林建设有限公司 | Facility for improving landscaping water and soil in saline land |
| CN202046934U (en) * | 2011-03-08 | 2011-11-23 | 北京仁创科技集团有限公司 | Artificial wetland water body treatment system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045074A (en) * | 2019-03-19 | 2019-07-23 | 广东筑奥生态环境股份有限公司 | The pollution source discrimination of emerging pollutant and application in a kind of ground water regime |
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Application publication date: 20120801 |