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Elution wastewater treatment device for organo-chlorine pesticide contaminated soil after synergistic elution remediation

A technology for the treatment of pesticide-contaminated soil and wastewater, which is applied in the restoration of contaminated soil, water/sewage treatment, and multi-stage water/sewage treatment. Save placement space, improve filtering effect, easy to operate

Active Publication Date: 2021-06-18
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the treatment effect is relatively stable and single, and the treatment effect is not high for the eluted wastewater containing many impurities that are difficult to decompose.

Method used

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  • Elution wastewater treatment device for organo-chlorine pesticide contaminated soil after synergistic elution remediation
  • Elution wastewater treatment device for organo-chlorine pesticide contaminated soil after synergistic elution remediation
  • Elution wastewater treatment device for organo-chlorine pesticide contaminated soil after synergistic elution remediation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, an elution wastewater treatment device after synergistic elution and restoration of organochlorine pesticide-contaminated soil includes: a desilting tank 1 and a purification tank 2 placed side by side, and a connecting pipe is connected between the desilting tank 1 and the purification tank 2 5 are connected to each other, and the connecting pipe 5 is provided with a water pump;

[0037] Such as Figure 2-4 As shown, the two ends of the water channel 14 are respectively provided with a water inlet and a water outlet. On a partition 11, the desilting module includes three sets of horizontally arranged rotating shafts 12 and a toothed rake grille 13 that rotates around the outside of the three sets of rotating shafts 12. The toothed rake grille 13 is a commercially available GHP140cm toothed rake grille. Structural adjustment, by changing the direction of its two sides so that the horizontal section gradually becomes a vertical section to ada...

Embodiment 2

[0052] This embodiment is basically the same as Embodiment 1, except that the number of filter hole groups 44 is different.

[0053] Wherein, the inner turntable 42 is provided with 12 sets of filter hole groups 44 at equal intervals in the circumferential direction.

Embodiment 3

[0055] This embodiment is basically the same as Embodiment 1, except that the number of filter hole groups 44 is different.

[0056] Wherein, the inner turntable 42 is provided with 4 sets of filter hole groups 44 at equal intervals in the circumferential direction.

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Abstract

The invention discloses an elution wastewater treatment device for organo-chlorine pesticide contaminated soil after synergistic elution remediation. The elution wastewater treatment device comprises a desilting tank and a purifying tank which are arranged side by side, a desilting module is arranged in the desilting tank, and the desilting module comprises three groups of horizontally arranged rotating shafts and tooth rake grids rotating around the outer sides of the three groups of rotating shafts; the tooth rake grid located between the second rotating shaft and the third rotating shaft is clamped by rolling brushes vertically located on the two sides of the tooth rake grid, the tooth rake grid moving to the position gradually changes to be perpendicular to a first partition plate, a purification module is arranged in the purifying tank and comprises a plurality of sections of inflection type liquid conveying pipes and a filtering mechanism, and the filtering mechanism penetrates through the middles of the liquid conveying pipes and fixedly sleeves the liquid conveying pipes. By removing sludge and solid wastes and purifying and filtering medicines, the treated wastewater can reach the standard of direct discharge, and the device is reasonable in structure, convenient to operate, high in automation degree and beneficial to further popularization.

Description

technical field [0001] The invention relates to the technical field of organochlorine pesticide-contaminated soil treatment, in particular to an elution wastewater treatment device for synergistic elution and restoration of organochlorine pesticide-contaminated soil. Background technique [0002] Organochlorine pesticides have a stable structure, high toxicity, and are difficult to decompose in the soil. Their natural degradation time is as long as several years to decades. and high ecological risk; at present, there are high requirements and difficulties for the remediation technology and process of organochlorine pesticide-contaminated sites. soil environmental problems. Synergistic chemical elution has obvious technical and economic advantages in realizing rapid and efficient remediation of soil remediation in high-concentration and highly toxic organochlorine-contaminated sites. However, the treatment and discharge of elution wastewater after elution restoration has be...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F11/121B09C1/02C02F101/30C02F101/36
CPCC02F9/00C02F11/121B09C1/02C02F1/001C02F1/00C02F2201/002C02F2101/306C02F2101/36
Inventor 邓绍坡周艳姜登登李旭伟赵远超王祥靳德成
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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