High-synergistic non-co-soluble composite phosphorus removal flocculating agent and application method thereof

Abstract

The invention belongs to sewage treatment technology and belongs to an improvement of flocculating agent compositions, and in particular relates to a high-synergistic non-co-soluble composite phosphorus removal flocculating agent and an application method thereof. The high-synergistic non-co-soluble composite phosphorus removal flocculating agent is prepared from 10 to 30 units of mass of polyaluminum sulfate, 20 to 40 units of mass of iron salt, 5 to 10 units of mass of copper sulfate, 5 to 10 units of mass of magnesium thiosulfate, and 2 to 10 units of mass of polyquaternium. A preparation method of the flocculating agent comprises the following steps: Step 1, adding water into a reaction kettle; Step 2, adding the iron salt into the water and stirring until the iron salt is completely dissolved; Step 3, adding aluminum sulfate, copper sulfate and magnesium thiosulfate into the aqueous solution in which the iron salt is dissolved and stirring until the three are completely dissolved;and Step 4, adding polyquaternium into the aqueous solution in which the iron salt, aluminum sulfate, copper sulfate and magnesium thiosulfate are dissolved, and stirring uniformly. By adding the high-synergistic non-co-soluble composite phosphorus removal flocculating agent, the total phosphorus content of sewage can be reduced to 0.5mg / L or below to reach the first-class A standard requirementfor sewage discharge, and the treatment effect is obviously better.

Description

technical field [0001] The invention belongs to sewage treatment technology, and belongs to the improvement of flocculant components, in particular to a high-synergia non-co-dissolution composite phosphorus removal flocculant and an application method thereof. Background technique [0002] With the development of industry and agriculture and population growth, the acceleration of urbanization and industrialization in China, the production and consumption of domestic chemical fertilizers, pesticides, and phosphorus-containing detergents have increased rapidly, resulting in the continuous increase of phosphorus content in sewage and water pollution. The eutrophication of water body is becoming more and more serious. The eutrophication of water body is endangering agriculture, fishery, tourism and many other industries. Important indicators, with strict emission standards. Phosphorus is a kind of eutrophication substance, which is an important factor causing eutrophication of ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a highly synergistic non-co-solvent composite phosphorus removal flocculant and its application method, which mixes organic high molecular polymers and inorganic flocculants. Solving the problem of solubility, screen out water-soluble polymers with special functions, combine organic polymers and various inorganic salt flocculants to obtain stable composite flocculants, play a synergistic role, have better preparation performance and lower cost, It is a more widely used phosphorus removal flocculant product. It is a new type of water treatment agent for the treatment of high-phosphorus sewage. By adding it, the total phosphorus content of the treated sewage can be reduced to below 0.5mg / L, reaching the level A of sewage discharge. Standard requirements, the treatment effect is obviously better, and the market promotion and application prospects are good