Structure capable of being used for treating heavy metals in bottom mud dredging tail water and construction method thereof

A technology for structures and heavy metals, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the surrounding breeding and river pollution, increase the cost of building grids, and cannot continue normal construction, etc. problems, to achieve the effect of guaranteeing heavy metal pollution, reducing operating costs of wastewater treatment, and easy implementation of operating conditions

Inactive Publication Date: 2014-01-29
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tailwater of the storage yard contains nitrogen, phosphorus, organic pollutants and heavy metal pollutants. Most of these pollutants adhere to the suspended particles and are discharged into the receiving water body with the remaining water, which will cause secondary pollution of the receiving water body. The specific gravity of suspended particles is small, it is difficult to settle and remove in a short time, and the unit output of dredging projects is large, and the storage yard space is limited. Tail water treatment has become a restrictive factor for the normal operation of env

Method used

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  • Structure capable of being used for treating heavy metals in bottom mud dredging tail water and construction method thereof
  • Structure capable of being used for treating heavy metals in bottom mud dredging tail water and construction method thereof
  • Structure capable of being used for treating heavy metals in bottom mud dredging tail water and construction method thereof

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Experimental program
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Effect test

Embodiment 1

[0030] A heavy metal lead-contaminated site of dredging tail water, according to the pollution range and degree investigation and simulation prediction results of dredging tail water on site, according to the construction method of the present invention, a structure that can be used to process heavy metal pollutants in dredging tail water is made and installed ,Specific steps are as follows:

[0031] (1) Build a sedimentation tank and a reaction tank at the proposed location;

[0032] (2) Excavate two trenches at the planned position of the reaction pool, leaving gaps between the trenches;

[0033] (3) Make grid cages according to the width, depth and thickness of each groove. The circumferential sides of the grid cages are equipped with mesh, and the prepared grid cages are placed on the corresponding In the trench, and make the front and rear sides of the grid cage as vertical as possible to the direction of water flow;

[0034] (4) Fill the groove located at the most upst...

Embodiment 2

[0043] A heavy metal lead-contaminated site of dredging tail water, according to the pollution range and degree investigation and simulation prediction results of dredging tail water on site, according to the construction method of the present invention, a structure that can be used to process heavy metal pollutants in dredging tail water is made and installed ,Specific steps are as follows:

[0044] (1) Build a sedimentation tank and a reaction tank at the proposed location;

[0045] (2) Excavate three trenches at the planned position of the reaction pool, leaving gaps between the trenches;

[0046] (3) Make grid cages according to the width, depth and thickness of each groove. The circumferential sides of the grid cages are equipped with mesh, and the prepared grid cages are placed on the corresponding In the trench, and make the front and rear sides of the grid cage as vertical as possible to the direction of water flow;

[0047] (4) Fill the groove located at the most up...

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Abstract

The invention discloses a structure capable of being used for treating heavy metals in bottom mud dredging tail water. The structure comprises a settling pond and a reaction pool, wherein the reaction pool comprises an adjusting column and at least one absorption column. The adjusting column and the absorption columns use a grating cylinder mould as a frame, the adjusting column is filled with a solid particle filler and the absorption columns are filled with compounds consisting of Fe3O4-calcium alginate-phanerochaete chrysosporium microspheres. The adjusting column and the absorption columns are sequentially arranged along a water flow direction. A construction method of the structure comprises the following steps: constructing the settling pond and the reaction pool; digging more than two grooves in the reaction pool; placing the grating cylinder mould in a direction vertical to the water follow; filling the solid particle filler to the most upstream groove, filling compound biological absorption materials in the balance of grooves, and ensuring that the filler is higher than the water line of the reaction pool. The method disclosed by the invention has the advantages of low cost, simple preparation process, high absorption efficiency and the like, and can be used for treating heavy metal pollutants in the bottom mud dredging tail water.

Description

technical field [0001] The invention belongs to the field of water body purification and water pollution prevention and control, and in particular relates to a structure which can be used for treating heavy metals in tail water of sediment dredging and a construction method thereof. Background technique [0002] With the rapid development of industry and the sharp increase of human activities, industrial sewage and industrial waste, urban and rural domestic sewage, and residues of chemical fertilizers and pesticides in agricultural production are directly discharged into lakes and rivers with little or no treatment, resulting in serious water pollution. `. In the urban water system closely connected with people's life, the content of heavy metals, eutrophication and other harmful chemical substances far exceeds the allowable value, which poses a great threat to the urban environment and people's life and health. The experience of treating polluted water systems at home and ...

Claims

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Application Information

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IPC IPC(8): C02F3/34
Inventor 黄丹莲罗湘颖许飘曾光明赖萃汤琳黄超李芳玲王聪徐娟娟
Owner HUNAN UNIV
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