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Water coagulation processing method

A treatment method and coagulation technology, which is applied in the field of water treatment, can solve the problems of residual manganese, excessive manganese water chroma, and low oxidation efficiency of potassium permanganate, and achieve fast reaction speed, increased floc generation, and fast precipitation Effect

Inactive Publication Date: 2009-07-08
SUN YAT SEN UNIV
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  • Summary
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Potassium permanganate cannot completely oxidize inorganic and organic pollutants in water, and the oxidation efficiency of potassium permanganate alone is low
In addition, if the manganese dioxide produced after the reduction of potassium permanganate cannot be completely precipitated, the remaining manganese is prone to exceed the standard, resulting in residual chromaticity of the effluent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Before the coagulation reaction process, add 1~10mg / L hydrogen peroxide to the water, and then add the catalyst. The catalyst is a compound of manganese dioxide and β-ferric oxide at a weight ratio of 2:1, and the dosage is 5~ 20mg / L. Then add inorganic coagulant to the water for coagulation treatment.

Embodiment 2

[0025] Add 0.1-5mg / L ozone to the water before the coagulation reaction process, and then add the catalyst, the catalyst is manganese dioxide and β-ferric oxide compounded at a weight ratio of 1:1, and the dosage is 5-20mg / L L. Then add inorganic coagulant to the water for treatment.

Embodiment 3

[0027] Add 0.1~5mg / L potassium permanganate to the water before the coagulation reaction process, and then add the catalyst. The catalyst is manganese dioxide, β-ferric oxide and water-soluble starch in a weight ratio of 1:1:1. Mixed, dosage 5 ~ 20mg / L. Then add inorganic coagulant to the water for coagulation treatment.

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PUM

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Abstract

The invention discloses a water coagulation treatment method. The method comprises that: a coagulating agent is adopted to carry out coagulation treatment on water; and in the process of water coagulation treatment, a catalyst and an oxidant are thrown into the water. Through the addition of the catalyst and the oxidant in the process of the water coagulation treatment, the catalyst forms a solid-liquid reaction interface in the water; and the oxidant undergoes rapid oxidation reaction on the interface and oxides organisms to destroy the protective function of the organisms on suspended particles. The adsorptive action of the catalyst can combine with colloid particles in the water to form a microfloc nucleus so as to increase the concentration of particles in the water and be favorable for the formation and growth of floc in the coagulation reaction.

Description

technical field [0001] The invention belongs to water treatment technology. Background technique [0002] Due to the serious pollution of surface water sources in recent years, organic matter, algae and other pollutants in surface water lead to poor treatment effect of aluminum salt and iron salt flocculant. Many surface waters have problems with difficult coagulation, mainly manifested in the fact that suspended particles in the water are not easy to destabilize. For example, when aluminum sulfate, polyaluminum, etc. are used to treat, the floc formation speed is slow, the flocs produced are small, the sinking speed is low, and the water is turbid after sinking. High degree. In addition, conventional coagulants are not effective in removing pollutants such as organic matter, algae, and chroma, and it is difficult to ensure that the water quality after treatment reaches the standard. Coagulation is an important process of physical and chemical treatment of water, and most ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/72
Inventor 刘伟
Owner SUN YAT SEN UNIV
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