Efficient phosphorus removal agent for sewage phosphorus removal and preparation method of efficient phosphorus removal agent

Abstract

The invention provides an efficient phosphorus removal agent for sewage phosphorus removal and a preparation method thereof, and relates to the technical field of sewage phosphorus removal. The efficient phosphorus removal agent for sewage phosphorus removal comprises the following raw materials in parts by weight: 20-30 parts of polyaluminum chloride, 4-6 parts of potassium permanganate, 4-5 parts of ferrous sulfate, 10-20 parts of polyacrylamide, 8-10 parts of calcium nitrate, 8-12 parts of modified diatomite, 6-8 parts of attapulgite, 4-6 parts of bamboo fibers, 1-2 parts of an antioxidant, 1-2 parts of a stabilizer and 1-2 parts of a coagulant aid. The diatomite is a natural adsorbent and is large in specific surface area, the diatomite has surface activity and adsorption capacity under the combined action of a large number of silicon hydroxyl and hydrogen bonds, the specific surface area of the diatomite is increased by modifying the diatomite, and the diatomite has higher adsorption capacity.

Description

Technical field [0001] The present invention relates to the field of sewage phosphorus removal technology, specifically an efficient phosphorus remover for sewage phosphorus removal and a preparation method thereof. Background [0002] According to the quality of water pollution, there are two types of water pollution: one is natural pollution; the other is man-made pollution, the current greater harm to water is man-made pollution, water pollution can be divided into chemical pollution, physical pollution and biological pollution according to the different pollution impurities. The main pollutants are: 1) industrial wastewater discharged without treatment; 2) domestic sewage discharged without treatment; 3) farmland sewage that uses a large number of fertilizers, pesticides and herbicides; 4) industrial waste and domestic garbage piled up by the river; 5) soil erosion; 6) mine sewage. [0003] In recent years, the widespread use of detergents, resulting in high phosphorus conten...

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Problems solved by technology

[0003] The widespread use of detergents in recent years has caused the phosphorus content in domestic sewage to remain high. High phosphorus content in wastewater will cause serious pollution. Therefore, it needs to be treated before discharge to reduce the phosphorus content in wastewater. Patent Publication No. CN106430504B, the name is a kind of dephosphorization agent for domestic sewage, including dephosphorization agent A and dephosphorization agent B, and the dephosphorization agent A is made of the following components by weight: 6.25 parts of polyaluminum chloride, 5.42 parts of attapulgite , 2.15 parts of aluminum sulfate, 2.36 parts of ferrous sulfate; the dephosphorization agent B is made of the following raw materials by weight: 1.85 parts of polyaluminum chloride, 6.4 parts of polyvinyl alcohol, 2.15 parts of ferrous sulfate, the patent provides Phosphorus removal agent for domestic sewage Phosphorus removal agent A and phosphorus removal agent B, although the raw materials are common water treatment agents, but after compounding, under appropriate pH conditions, their dephosphorization effect is greatly improved, high phosphorus The phosphorus content of domestic sewage can be reduced to 0.25mg / L after being treated by the method of this application, reaching or lower than the national standard. However, the phosphorus removal agent prepared by this patent contains more chemical substances, and its production cost is higher, which is harmful to the environment. The impact of secondary pollution caused is relatively large, and the phosphorus removal agent in the above-mentioned prior art basically uses chemical reaction to remove phosphorus ions in sewage. Although the specificity is strong, the treatment effect is single and cannot meet the actual needs.

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