Method for preparing and using polymeric flocculant polyferric silicate sulfate

A polysilicate ferric sulfate and polymer flocculant technology, applied in the field of environmental engineering, can solve the problems of reducing product performance and increasing costs, and achieve the effects of low cost, simple production equipment, and excellent water purification effect
CN101974566AActive Publication Date: 2011-02-16CENT SOUTH UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2011-02-16

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Abstract

The invention discloses a method for preparing inorganic polymeric flocculant polyferric silicate sulfate and a wastewater treatment method. Ferrous sulfate is oxidized into polyferric sulfate through the acclimated thiobacillus ferrooxidans; polymerization reaction is conducted between the polyferric sulfate and the active polysilicic acid solution; and then the polymerization reaction product is left to stand and ageing to obtain the brownish red liquid polyferric silicate sulfate. The product brownish red liquid polyferric silicate sulfate is applicable to the purification of domestic sewage, printing and dyeing wastewater and heavy metal wastewater and COD removal rate, decoloring rate and heavy metal removal rate can reach more than 90%.
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Description

technical field

[0001] The invention belongs to the field of environmental engineering, and in particular relates to a preparation method of a polymer flocculant polysilicate ferric sulfate and its application in wastewater treatment. Background technique

[0002] Flocculants play an important role in water treatment. High-efficiency and low-cost flocculants are the key to the realization of chemical flocculation-enhanced primary treatment technology, and high-efficiency and low-cost flocculants have been included in my country's "Tenth Five-Year Plan" water treatment agent development plan. It can be used to reduce sensory indicators such as turbidity and chromaticity of water, and remove various high molecular organic substances, certain heavy metals and radioactive substances. According to chemical properties, flocculants can be divided into inorganic flocculants and organic flocculants. According to the molecular weight, it can be divided into polymer flocculant and tr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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