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Soil leaching remediation reduction system and construction method thereof

A technology of soil leaching and high-pressure jet, which is applied in the field of soil remediation, can solve the problems of large remediation amount, complex equipment structure, and low cost performance, and achieve the effect of reducing the number of stages and improving energy utilization

Active Publication Date: 2020-05-19
BCEG ENVIRONMENTAL REMEDIATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to provide a soil leaching repair reduction system and its construction method to solve the problem that soil remediation in the prior art is only applied to in-situ leaching treatment of medium and large-scale polluted sites. There are many stages, complex equipment structure, and low cost-effective technical problems in some small-scale contaminated site treatment projects; the use of three-stage elution devices improves the leaching efficiency and saves the amount of leaching chemicals, but does not involve the reduction of sandy soil. In actual application, there will be technical problems such as large amount of repair and high repair cost

Method used

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  • Soil leaching remediation reduction system and construction method thereof
  • Soil leaching remediation reduction system and construction method thereof
  • Soil leaching remediation reduction system and construction method thereof

Examples

Experimental program
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Embodiment 1

[0053] Such as figure 1 with 2 As shown, a soil washing repair reduction system includes a primary feed classification unit, a high-pressure jet separation unit, a secondary classification unit, a mud settlement concentration unit, a filter press unit, a sewage treatment unit, a dust tail gas treatment unit and Instrument electrical control unit.

[0054] The feed primary classification unit includes a silo 1, a mud tank 2 arranged at the bottom of the silo 1 and a mud mixer 3 arranged in the mud tank 2, and the upper part of the side wall of the mud tank 2 is provided with an upper discharge port of the mud tank 6. The high-pressure jet separation unit includes a high-pressure jet separation device 4, the high-pressure jet separation feed port 5 of the high-pressure jet separation device 4 communicates with the upper discharge port 6 of the mud tank, and the sewage treatment unit includes sewage treatment reaction equipment 18. Sludge dehydration equipment 19 and circulatin...

Embodiment 2

[0084] The difference from Example 1 is that the soil washing repair and reduction system in this embodiment is a container-type soil washing repair reduction system, and the soil washing repair reduction system is installed in one or more containers 31, which is convenient Fast moving and processing, in general, the hourly processing capacity ranges from 0.5t / h soil to 2t / h soil. This equipment is designed to run and operate 24 / 7. In this embodiment, the electric control cabinet 30 is installed on one side of the soil washing restoration and weight reduction system, and the electric control cabinet 30 is separated from the soil washing restoration weight reduction system with a baffle.

Embodiment 3

[0086] The difference from Example 1 is that the soil washing restoration reduction system in this embodiment is a skid-mounted soil washing restoration reduction system, and the soil washing restoration reduction system is installed on one or more skid-mounted steel foundations 34, which is convenient for fast movement and processing. Under normal circumstances, the hourly processing capacity ranges from 0.5t to 2t of soil. In this embodiment, the electric control cabinet 30 is installed on one side of the soil washing restoration reduction system, and a steel canopy 32 is installed on the top of the soil washing restoration reduction system and the electric control cabinet 30 .

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Abstract

The invention discloses a soil leaching remediation reduction system and a construction method thereof, and belongs to the technical field of soil remediation. The soil leaching remediation reductionsystem comprises a feeding primary grading unit, a high-pressure jet separation unit, a secondary grading unit, a slurry settling concentration unit, a filter pressing unit, a sewage treatment unit, adust tail gas treatment unit and an instrument electrical control unit which are connected in sequence. According to the system, the grading quantity and the equipment quantity are greatly reduced, and for soil treatment of small-sized polluted sites, the whole system can adopt modularized container equipment or skid-mounted equipment which is convenient to move, so that the on-site constructioncost can be greatly reduced, the construction period can be greatly shortened, and the remediation efficiency is improved. The system is simple and ingenious in structure, easy and convenient to operate, low in equipment investment cost, small in occupied area, particularly suitable for remediation projects of small contaminated sites, capable of achieving multi-equipment parallel operation, suitable for treatment of medium and large sites, wide in application range, good in effect and wider in application prospect.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a soil rinsing repair reduction system and a construction method thereof. Background technique [0002] Soil washing technology is an important restoration technology in soil restoration. Soil washing removes pollutants adsorbed on and within soil particles. [0003] In the field of soil remediation, the soil particle size is usually classified, and the specific classification is as follows: boulder particle size > 256mm; medium gravel particle size: 64-256mm; fine gravel particle size: 2-64mm; sand: 1 / 16-2mm ; Silt particle size: 1 / 516 ~ 1 / 16mm; Clay particle size: less than 1 / 512mm. [0004] Soil washing is an in situ and ex situ remediation technique that uses clean water (usually with some chemicals added) or solvents to remove pollutants from excavated soil. Clean water mainly plays two roles in the leaching process: 1. Separating coarse particles from fine pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/02B09C1/00B01D36/04
CPCB01D36/04B09C1/00B09C1/02
Inventor 李书鹏卜凡阳刘鹏赵朋顾群田齐东韩进
Owner BCEG ENVIRONMENTAL REMEDIATION CO LTD
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