Inorganic oxidability high molecular ferro-silicon coagulant, preparation process thereof and applications

An oxidizing and polymer technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problem that the inorganic polymer ferrosilicon coagulant and its oxidative modifier have not formed a market scale, and the pollution removal performance has not been improved. Break through the problems of progress and poor product stability, and achieve the effects of low price, short production cycle and short stirring time
CN101333023BInactive Publication Date: 2011-11-02UNIV OF JINAN +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
UNIV OF JINAN
Publication Date
2011-11-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention provides an inorganic oxidizing macromolecular silicon iron coagulating agent, a preparation technique thereof and the application to water treatment. The coagulating agent is yellowish green or yellowish brown liquid or solid product, has low cost, good stability and oxidizing property and increases composite function and improves efficiency for eliminating turbidity, color, heavy metals, algae, organic matter, etc. The UV254 removal rate of the water of the Yellow River can reach 55%-80%, and the COD Mn removal rate can reach 75%-95%. For slaughtering wastewater, COD can drop below 100mg / L, and chroma is lowered below 5 and phosphorus removal rate can reach 80%-98%. The preparation method of the coagulating agent adopts an oxidation and copolymerization method, has simple technique and equipment, short period and no secondary pollution and can be carried out at normal pressure and low temperature. The inorganic oxidizing macromolecular silicon iron coagulating agent of the present invention is suitable for the treatment fields of municipal water supply and sewage as well as industrial water supply and wastewater and is especially suitable for low-temperature and low-turbidity water, the water of a micro-polluted water source or the industrial wastewater having high chroma and high organic content or containing refractory organic substances.
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Description

technical field

[0001] The invention relates to an inorganic oxidizing polymer ferrosilicon coagulant, its preparation process and its application as a coagulant in water treatment. Background technique

[0002] Aluminum salts and iron salts are special inorganic coagulants in the field of water treatment. The residual aluminum in aluminum salt treatment water has cumulative biological toxicity, and its sludge cannot be reused and it is difficult to treat harmlessly. Therefore, non-toxic iron coagulants have been widely used and developed rapidly in the field of water treatment at home and abroad. It goes through three stages: traditional iron salt, inorganic polymer iron salt, and inorganic composite polymer iron salt. Inorganic polymer ferrosilicon coagulant is the latest variety among iron salts, which is a complex of silicon and iron. It was developed in Japan in the early 1990s, but it was reported in the form of patents. The coagulant has a good water purification eff...

Claims

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