CN104847009A - Underground industrial sewage cleaning method - Google Patents
Underground industrial sewage cleaning method Download PDFInfo
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- CN104847009A CN104847009A CN201410052123.XA CN201410052123A CN104847009A CN 104847009 A CN104847009 A CN 104847009A CN 201410052123 A CN201410052123 A CN 201410052123A CN 104847009 A CN104847009 A CN 104847009A
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Abstract
The invention provides an underground industrial sewage cleaning method comprising drilling a sewage extraction well and a clean water recharge well with certain density in a polluted area according to pollution degrees, enabling the depth of the sewage extraction well to be as deep as an underground sewage layer and the depth of the clean water recharge well to be as deep as a water-containing sand layer, pumping sewage water from the sewage extracting well, purifying the pumped polluted water via water treatment to reach a standard, pressing and recharging the clean water into the extraction well, and continuing the above processes until water pumped from the sewage extraction well reach a cleanness standard. An underground sewage processing and cleaning method with simple operation and less investment is provided.
Description
Technical field
The present invention relates to the green technology of water pollutions process, especially relate to the sweep-out method to underground sewage layer.
Background technology
The underground water more than half rounds severe contaminations in Chinese city or rural area, according to statistics, 1/3 of water resources in china total amount is underground water, and the underground water in the whole nation 90% is subject to pollution in various degree, and wherein 60% is seriously polluted.Tool relevant department is to 118 continuous monitored data displays in city, and about have the urban groundwater of 64% to suffer severe contamination, the underground water of 33% is subject to slight pollution, and basic clean urban groundwater only has 3%.
Groundwater pollution is because human factor causes the phenomenon of ground water degradation.The reason of groundwater pollution mainly contains: industrial wastewater directly discharges to underground, and contaminated surface water invades in underground reservoir, human and animal excreta or contaminated water permeates the ground because of excessive use agricultural chemicals.The result polluted is the harmful components made in underground water, bacterium, organic matter etc. content increase.The underground water polluted has high risks to health and industrial and agricultural production.
Groundwater pollution and surface water pollution have some significantly different: because pollutant enters aquifer, and it is all relatively slower to move in aquifer, and pollution occurs often gradually, if do not carry out special monitoring, are difficult to realize in time; After finding groundwater pollution, determine that pollution sources are also so easy unlike surface water.The more important thing is that groundwater pollution is not easily eliminated.Decontaminate after source, surface water can reach purification within comparatively short-term; And underground water, even if eliminate pollution sources, the pollutant having entered aquifer will produce harmful effect for a long time.
The pollution modes of underground water can be divided into directly pollution and indirect pollution two kinds.The feature of direct pollution is that pollutant directly enters aquifer, and in pollution course, the character of pollutant is constant.This is the major way to groundwater pollution.The feature of indirect pollution is, groundwater pollution is because pollutant acts on other materials, and some composition in these materials entered, and underground water causes.
The following complex formation in earth's surface, Groundwater Flow is extremely slow, and the pathway of groundwater pollution is diversified, and therefore, groundwater pollution has the advantages that process slowly, not easily finds and is difficult to improvement.Underground water, once be polluted, even if thoroughly eliminate its pollution sources, also obtains more than ten years groundwater pollution, water quality even just can be made decades to restore.
At present, underground water pollution control technology is summed up the process of main employing Physical, and described Physical is the method for administering Polluted Groundwater by the means of physics, sums up and can be divided into:
1. this method of screen method sets up various physical barriers in underground, polluted water body trap got up, and spreads further spread to prevent pollutant.Conventional mortar screen sinking uses pressure to underground grouting mortar, forms one curtain, thus polluted water body trap got up around polluted water body.Generally speaking, physical shielding method only just can be considered as a kind of permanent enclosure method when processing severe toxicity, Recalcitrant chemicals among a small circle, and in most cases, it, just at the initial stage of underground water pollution control, is used as a kind of provisional control method.
2. passive collecting method, this method digs an enough dark raceway groove, in ditch, arrange gathering system, the pollutant of floating on water such as oil pollutant etc. is collected, maybe all Polluted Groundwaters are collected so that a kind of method processed.Passive collecting method is generally relatively effective when processing light contaminants (as oils etc.), does not have effect to the pollution compared with deep layer.
Summary of the invention
The object of the invention is to adopt a kind of effective mode, the pollution of the water table that industrial waste water causes effectively is administered, by the sewage of back production pollution layer, recharges after treatment, recover the clean of water table.
In order to realize object of the present invention, following technical scheme is proposed:
A kind of underground industrial waste water sweep-out method, described sweep-out method comprises step:
1) in contaminated area and according to pollute degree, beat sewage back production well and clean water leaching well with certain density;
2) degree of depth of sewage back production well reaches underground pollution water layer, and the degree of depth of clean water leaching well reaches moisture sandstone layer;
3) by water pump, in sewage back production well, contaminant water is extracted;
4) by extract out contaminant water through water treatment purification up to standard after, pressurization re-injection enter clean water leaching well;
5) said process is until the water extracted in sewage back production well reaches cleanliness standard.
Described method clears Water Spreading well in the upstream arrangement one of polluted water body, by in clean water leaching well to aquifer injected clear water, form a ground water divide, thus stop the contaminated water body of the downward supply of upstream cleaning water body, change the hydraulic gradient of underground water, polluted water body and clean water body are separated.
Described method clears the water filling of Water Spreading well in polluted water body arranged downstream one, forms a dividing ridge spread to downstream to stop contaminated water flow in downstream.
The degree of depth of described sewage back production well is the mode advanced by substep, and the mode of Stratified Sampling, progressively reaches underground pollution water layer.
Tens meters are interposed between in the scope of hundreds of rice between described sewage back production well and clean water leaching well; The mode adopting described clean water leaching well to arrange around several described sewage back production well, makes the clear water of described clean water leaching well re-injection form certain pressure to sewage layer, is convenient to sewage back production.
Accompanying drawing explanation
Fig. 1 is underground of the present invention industrial waste water sweep-out method schematic diagram.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly understand, below in conjunction with the drawings and specific embodiments, the present invention is described in more detail.
Fig. 1 is underground of the present invention industrial waste water sweep-out method schematic diagram.As shown in the figure, underground of the present invention industrial waste water sweep-out method, roughly comprises several step:
1) in contaminated area and according to pollute degree, beat sewage back production well and clean water leaching well with certain density; Larger, the contaminated degree of contaminated area is more serious, and the density of well-digging is closeer.Interval between sewage back production well and clean water leaching well is generally in tens meters of scopes to hundreds of rice.Generally can adopt the mode that clean water leaching well is arranged around several sewage back production well, the clear water of clean water leaching well re-injection forms certain pressure to sewage layer, is convenient to sewage back production.
2) degree of depth of sewage back production well reaches underground pollution water layer, and the degree of depth of clean water leaching well reaches moisture sandstone layer, and the clear water recharged is convenient to infiltration at sandstone layer;
3) by water pump, in sewage back production well, contaminant water is extracted;
4) by extract out contaminant water through water treatment purification up to standard after, pressurization re-injection enter clean water leaching well; The method of sewerage treatment is polluted character according to this area and is adopted different treatment technologies.
5) said process is until the water extracted in sewage back production well reaches cleanliness standard.
According to the features of terrain of locality, such as, when pollution water layer is in lower reaches, can adopt and clear Water Spreading well in the upstream arrangement one of polluted water body, clean water leaching well reaches aquifer, clear water up to standard for process is passed through in clean water leaching well to aquifer injected clear water, form a ground water divide, thus stop the contaminated water body of the downward supply of upstream cleaning water body, change the hydraulic gradient of underground water, polluted water body and clean water body are separated, can sewage be drained only than speed faster.
When pollution water layer is in upstream, basin, the water filling of Water Spreading well can be cleared in polluted water body arranged downstream one, form a dividing ridge in downstream and spread to downstream to stop contaminated water flow, control contaminated area.
Sewage back production well and the design of clean water leaching well well head are except considering the basin distribution of described polluted-water, by the spaced design between sewage back production well and clean water leaching well in tens meters of scopes to hundreds of rice, the enforcement of sewage back production and clean water leaching operation can also be convenient to; The mode that clean water leaching well also can be adopted to arrange around several sewage back production well, makes the clear water of described clean water leaching well re-injection form certain pressure to sewage layer, is convenient to sewage back production.
When beating sewage back production well, the degree of depth of sewage back production well is the mode advanced by substep, often reaches certain depth, takes water sample, inspection degree of contamination, and the mode of this Stratified Sampling makes sewage back production well progressively accurately arrive underground pollution water layer.
Above-described specific embodiment; further detailed description has been carried out to object of the present invention, technical scheme and beneficial effect; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a underground industrial waste water sweep-out method, is characterized in that, described sweep-out method comprises step:
1) in contaminated area and according to pollute scope and degree, beat sewage back production well and clean water leaching well with certain density;
2) degree of depth of sewage back production well reaches underground pollution water layer, and the degree of depth of clean water leaching well reaches moisture sandstone layer;
3) by water pump, in sewage back production well, contaminant water is extracted;
4) by extract out contaminant water through water treatment purification up to standard after, pressurization re-injection enter clean water leaching well;
5) said process is until the water extracted in sewage back production well reaches cleanliness standard.
2. underground according to claim 1 industrial waste water sweep-out method, is characterized in that, is interposed between tens meters in the scope of hundreds of rice between described sewage back production well and clean water leaching well; The mode adopting described clean water leaching well to arrange around several described sewage back production well, makes the clear water of described clean water leaching well re-injection form certain pressure to sewage layer, is convenient to sewage back production.
3. underground according to claim 1 industrial waste water sweep-out method, it is characterized in that, described method clears Water Spreading also in the upstream arrangement one of polluted water body, by in clean water leaching well to aquifer injected clear water, form a ground water divide, thus stop the contaminated water body of the downward supply of upstream cleaning water body, change the hydraulic gradient of underground water, polluted water body and clean water body are separated.
4. underground according to claim 1 industrial waste water sweep-out method, is characterized in that, described method clears Water Spreading well in polluted water body arranged downstream one and notes clear water, forms a dividing ridge spread to downstream to stop contaminated water flow in downstream.
5. according to the underground industrial waste water sweep-out method of claim 1-4 described in one of them, it is characterized in that, the degree of depth of described sewage back production well is advanced by substep and the mode of Stratified Sampling, progressively reaches underground pollution water layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410052123.XA CN104847009A (en) | 2014-02-17 | 2014-02-17 | Underground industrial sewage cleaning method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410052123.XA CN104847009A (en) | 2014-02-17 | 2014-02-17 | Underground industrial sewage cleaning method |
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| CN104847009A true CN104847009A (en) | 2015-08-19 |
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Citations (8)
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|---|---|---|---|---|
| DE4100804A1 (en) * | 1990-01-24 | 1991-07-25 | Messer Griesheim Gmbh | Rapid removal of cyanide from ground-water - by aeration, enrichment with nutrients, filtration then return to the soil |
| US5553974A (en) * | 1994-12-02 | 1996-09-10 | Nazarian; Djahangir | Enhanced vapor extraction system and method of in-situ remediation of a contaminated soil zone |
| US6210078B1 (en) * | 1999-06-02 | 2001-04-03 | Southern Company Services | Methods for the in situ removal of a contaminant from soil |
| CN102228900A (en) * | 2011-05-18 | 2011-11-02 | 华北电力大学 | In situ integrated restoring system and method of petroleum polluted soil |
| CN102923822A (en) * | 2012-11-08 | 2013-02-13 | 中国环境科学研究院 | Restoring device and restoring method for treating fluorine pollution of groundwater |
| CN203061547U (en) * | 2013-01-25 | 2013-07-17 | 北京中地泓科环境科技有限公司 | Comprehensive repair system for groundwater chromium pollution fields |
| CN103303986A (en) * | 2013-07-05 | 2013-09-18 | 华北电力大学 | Device and method for periodic in-situ pumping based integrated repairing of groundwater pollution |
| CN203419800U (en) * | 2013-08-28 | 2014-02-05 | 江苏上田环境修复有限公司 | Photocatalytic oxidation underground water repair system |
-
2014
- 2014-02-17 CN CN201410052123.XA patent/CN104847009A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4100804A1 (en) * | 1990-01-24 | 1991-07-25 | Messer Griesheim Gmbh | Rapid removal of cyanide from ground-water - by aeration, enrichment with nutrients, filtration then return to the soil |
| US5553974A (en) * | 1994-12-02 | 1996-09-10 | Nazarian; Djahangir | Enhanced vapor extraction system and method of in-situ remediation of a contaminated soil zone |
| US6210078B1 (en) * | 1999-06-02 | 2001-04-03 | Southern Company Services | Methods for the in situ removal of a contaminant from soil |
| CN102228900A (en) * | 2011-05-18 | 2011-11-02 | 华北电力大学 | In situ integrated restoring system and method of petroleum polluted soil |
| CN102923822A (en) * | 2012-11-08 | 2013-02-13 | 中国环境科学研究院 | Restoring device and restoring method for treating fluorine pollution of groundwater |
| CN203061547U (en) * | 2013-01-25 | 2013-07-17 | 北京中地泓科环境科技有限公司 | Comprehensive repair system for groundwater chromium pollution fields |
| CN103303986A (en) * | 2013-07-05 | 2013-09-18 | 华北电力大学 | Device and method for periodic in-situ pumping based integrated repairing of groundwater pollution |
| CN203419800U (en) * | 2013-08-28 | 2014-02-05 | 江苏上田环境修复有限公司 | Photocatalytic oxidation underground water repair system |
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