In-situ repair method and special water treatment device for chromium-contaminated site
A water treatment device and in-situ repair technology, which is applied in the field of chromium-contaminated site restoration, can solve problems such as unsatisfactory treatment effect, secondary pollution, and long treatment cycle, and achieve the effect of improving the utilization rate of chemicals, increasing the flow rate, and achieving good results
Inactive Publication Date: 2016-06-01
北京中科百旺环保科技有限公司
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Problems solved by technology
After the soil and groundwater are polluted by chromium, the polluted soil is usually excavated and transported to a different place for treatment, or treated by chemical leaching, solidification, etc.; the polluted groundwater is pumped out for treatment to meet the standard and discharged, or the artificial reflection wall is used to control the downstream water. Pollution, the existing problems are: large investment, high cost, unsatisfactory treatment effect, increased pollutants, easy to cause secondary pollution, long treatment cycle
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[0025] Below in conjunction with accompanying drawing, the present invention will be further described by examples.
[0026] A method for in-situ remediation of chromium-contaminated sites, comprising the following process steps:
[0027] ① Determine the pollution source of the chromium-contaminated site; build a water injection well 9 next to the pollution source;
[0028] ② Downstream of the pollution source 1, at the junction of pollution and non-pollution, drill multiple pumping wells 3 on a straight line perpendicular to the pollution plume 2;
[0029] ③All the polluted water pumped out from each pumping well enters the special water treatment device 6; the device includes a circulation concentration tank 11, a cross-flow filter device 12, a cross-flow filter device water supply pump 13, a dosing device and a solid waste filter press device; the cycle concentration The tank is provided with polluted water inlet 14, medicament inlet 15, circulating water inlet 16, solid w...
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The invention relates to an in-situ remediation method of a chromium pollution site and special water treatment equipment and belongs to the technology field of remediation of the chromium pollution site. According to the technical scheme, multiple pumping wells (3) are drilled on a straight line which is at the polluted and unpolluted junction at the downstream of a pollution source (1) and vertical to a pollution plume (2); polluted water pumped from each pumping well totally enters into special water treatment equipment (6); rinsing the pollution source and polluted soils with purified water, guiding waste water to the downstream of the pollution source, pumping the waste water with the pumping well, conveying the waste water into the special water treatment equipment to be treated, and rinsing the pollution source with the purified water again, and the steps are repeatedly executed, so that the in-situ remediation of the chromium pollution site is finished when detection indexes of the pollution source are qualified. The beneficial effect of the in-situ remediation method is that in-situ remediation is realized for the soil and no contaminant is added to water, thus no secondary pollution is caused, besides, the method is low in cost and excellent in effect.
Description
technical field [0001] The invention relates to an in-situ repair method for a chromium-contaminated site and a special water treatment device, belonging to the technical field of chromium-contaminated site repair. Background technique [0002] When the site is polluted by chromium, how to repair it is a technical problem to be solved urgently in this field. After the soil and groundwater are polluted by chromium, the polluted soil is usually excavated and transported to a different place for treatment, or treated by chemical leaching, solidification, etc.; the polluted groundwater is pumped out for treatment to meet the standard and discharged, or the artificial reflection wall is used to control the downstream water. Pollution, the existing problems are: large investment, high cost, unsatisfactory treatment effect, increased pollutants, easy to cause secondary pollution, and long treatment cycle. Contents of the invention [0003] The invention provides an in-situ resto...
Claims
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IPC IPC(8): B09C1/02B09C1/08C02F9/04
Inventor 闫绍才田西昭张志强李永定李淑辉单强张丽黎李淑民白振宇
Owner 北京中科百旺环保科技有限公司