Method for treating heavy metal polluted water by multicomponent composite flocculating setting agent

A multi-component composite and sedimentation agent technology, applied in the direction of flocculation/sedimentation water/sewage treatment, water pollutants, chemical instruments and methods, etc., can solve the problems of heavy metal treatment and removal technology being difficult to be effective, lack of heavy metal removal technology, etc., to achieve easy Realization, the effect of simple preparation method and easy operation

Active Publication Date: 2009-08-12
清华苏州环境创新研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for large environmental water bodies such as polluted rivers and lakes, conventional heavy metal treatment and removal technologies are often difficult to be effective.
So far, there is still a lack of heavy metal removal technology suitable for rivers, lakes and other environments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Potassium permanganate and lime mixed solution preparation: add 20Kg potassium permanganate and 2000Kg lime to a volume of 10m 3 In the dissolving tank I equipped with water, fully stir to make potassium permanganate and lime dissolve completely.

[0046] Ferrous sulfate solution preparation: add 57.7Kg ferrous sulfate to a volume of 10m 3 In the dissolution tank II equipped with water, fully stir to dissolve the ferrous sulfate completely.

[0047] Preparation of multi-component composite flocculation and sedimentation agent: 1000Kg ferric chloride (calculated as iron), 1000Kg aluminum trichloride (calculated as aluminum), and 20Kg potassium permanganate are added to a volume of 10m 3 In a dissolving tank filled with water, fully stir to dissolve.

[0048] Applied to the purification of mercury-polluted lakes: the mercury concentration in mercury-polluted water is 0.20mg / L. First, evenly spray potassium permanganate and lime mixed solution and ferrous sulfate soluti...

Embodiment 2

[0050] Potassium permanganate and lime mixed solution preparation: add 2Kg potassium permanganate and 2000Kg lime to a volume of 10m 3 In the dissolving tank I equipped with water, fully stir to make potassium permanganate and lime dissolve completely.

[0051] Ferrous sulfate solution preparation: add 5.77Kg ferrous sulfate to a volume of 10m 3 In the dissolution tank II equipped with water, fully stir to dissolve the ferrous sulfate completely.

[0052] Multi-component composite flocculation-sedimentation agent preparation: 200Kg ferric chloride (calculated as iron), 500Kg aluminum trichloride (calculated as aluminum), 50Kg polyaluminum chloride (calculated as aluminum), 5Kg alum (calculated as aluminum), 7.55 Kg potassium permanganate is added to the volume of 10m at the same time 3 Fully stir and dissolve in a dissolving tank filled with water.

[0053] Applied to the purification of cadmium-polluted lakes: the concentration of cadmium in cadmium-polluted water is 1.0mg...

Embodiment 3

[0055] Potassium permanganate and lime mixed solution preparation: add 500Kg potassium permanganate and 1000Kg lime to a volume of 10m 3 In the dissolving tank I equipped with water, fully stir to make potassium permanganate and lime dissolve completely.

[0056] Preparation of ferrous sulfate solution: add 1443Kg ferrous sulfate to a volume of 10m 3 In the dissolution tank II equipped with water, fully stir to dissolve the ferrous sulfate completely.

[0057] Multi-component composite flocculation-settling agent preparation: 200Kg ferric chloride (calculated as iron), 500Kg aluminum trichloride (calculated as aluminum), 50Kg polyaluminum chloride (calculated as aluminum), 5Kg alum (calculated as aluminum), 75.5 Kg potassium permanganate and 10Kg polyacrylamide are added to a volume of 10m 3 Fully stir and dissolve in a dissolving tank filled with water.

[0058] Applied to the purification of copper-polluted lakes: the concentration of copper in copper-polluted water is 1....

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Abstract

The invention belongs to the river water pollution treatment technology field, and particularly relates to a method for controlling water bodies polluted by mercury, lead, cadmium, copper, chrome, arsenic and other heavy metals by utilizing a multi-compound flocculation settling agent. The multi-compound flocculation settling agent is formed by preparing iron salt, aluminum salt, potassium permanganate, polyacrylamide and other solutions. The method for controlling lakes, reservoirs, rivers and other water bodies polluted by the heavy metals by utilizing the multi-compound flocculation settling agent mainly comprises the following steps of controlling the dead or flowing water bodies polluted by the heavy metals; the water after being controlled can satisfy the regulation and the requirements on three types of water bodies for heavy metal pollutants in the surface water environmental quality standard of China. The method for controlling the polluted water bodies also can be used for removing the heavy metals, iron, manganese, phosphate and other pollutants in ground water, drinking water, industrial wastewater and other water bodies.

Description

technical field [0001] The invention belongs to the technical field of river water pollution treatment, in particular to a method for treating water polluted by heavy metals such as mercury, lead, cadmium, copper, chromium and arsenic by using a multi-component composite flocculation-sedimentation agent. Background technique [0002] Heavy metal wastewater produced in industrial production processes such as chemical industry, metallurgy and iron and steel, energy and mineral mining, and electroplating and electrolysis is an important source of water pollution. If it enters the environment without proper treatment, it may cause serious pollution to rivers, lakes, reservoirs and other water environments. And endanger the safety of drinking water sources and water quality along the coast, and cause major hidden dangers to drinking water supply. Especially for some environmental pollution incidents caused by sudden discharge of high-load heavy metal pollution into water bodies, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/52C02F101/20
Inventor 曲久辉王洪杰刘锐平刘会娟兰华春
Owner 清华苏州环境创新研究院
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