In-situ sediment remediation equipment and remediation method

Abstract

The invention discloses in-situ sediment remediation equipment which comprises a heating device; a stirring device is fixedly installed on one side of the heating device; a pressurization system is arranged on one side of the stirring device; a control system is arranged on one side of the pressurization system; a pipeline system is fixedly installed below the heating device; an emptying device isfixedly installed below the pipeline system; an injection device is fixedly installed on one side of the emptying device; an anchoring device is fixedly installed below the injection device; and a lifting device is fixedly installed on one side of the anchoring device. The in-situ sediment remediation equipment provided by the invention can realize layering and zonal remediation of bottom mud, realizes combined remediation of the bottom mud and overlying water, can realize simultaneous remediation of various pollutants with one-time implementation, improves the bottom mud in-situ remediationefficient, is convenient for people to use and brings a better use prospect.

Description

technical field [0001] The invention relates to the field of mechanical equipment, in particular to an in-situ sediment restoration equipment and restoration method. Background technique [0002] At present, sediment remediation technology can be divided into two categories: ex-situ remediation technology and in-situ remediation technology. [0003] The most typical representative of ex-situ restoration technology is dredging. Although ex-situ restoration has quick results, the ex-situ restoration technology disturbs the overlying water greatly, the project is huge, the investment cost is high, and the treatment effect of dredged sludge is difficult to meet the standard. [0004] In-situ remediation treatment usually involves adding enzyme preparations or chemical agents to the contaminated sediment to stimulate the reproduction of microorganisms and enhance the biodegradation of pollutants. The dosing agent will have a biochemical reaction with the pollutants, change the p...

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Problems solved by technology

[0006] (1) At present, most of the chemical dosing is artificially added to the water, and the chemical is settled on the surface of the sediment by the gravity of the chemical. When the water flow is large, the chemical may be washed away by the water. Due to the limited contact between the chemical and the sediment, it is greatly The efficiency of the agent is reduced; the existing rake injection process has a large disturbance to the sediment, and there is a situation where the restoration agent overflows. At the same time, the rake injection method is very limited in both the injection depth and the injection material in a single working process , therefore, its existing actual case effects show that the efficiency is low

[0007] (2) Existing research data show that the pollutants are unevenly distributed in the sediment both horizontally and vertically, and there is a lack of targeted equipment in the current in-situ remediation technology;

[0008] (3) Due to the lack of practical dosing equipment, it is impossible to effectively control the degradation environment of sediment pollutants, and the degradation reaction of pollutants in sediment is in an "out of control state", which directly reduces the efficiency of sediment restoration

[0009] To sum up, for the differences in the horizontal and vertical distribution of pollutants in the sediment, the traditional in-situ remediation technology for sediment lacks targeted methods and equipment. In situ repair is less efficient

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