Composite water quality agglutination purifying agent and preparation method thereof

Abstract

The invention relates to the field of sewage treatment, and particularly discloses a composite water quality agglutination purifying agent and a preparation method thereof. The composite water quality agglutination purifying agent is prepared from the following components in parts by weight: 550 to 600 parts of calcined silica, 30 to 70 parts of rare earth porcelain sand, 20 to 65 parts of white mica, 90 to 120 parts of polyaluminum chloride, 15 to 50 parts of serpentine and 15 to 45 parts of polyacrylamide. The preparation method comprises the following steps: respectively crushing the muscovite, the serpentine and the rare earth porcelain sand, mixing, adding water accounting for 10-15% of the total weight of the muscovite, the serpentine and the rare earth porcelain sand, carrying out ball milling, drying and sieving, adding the calcined silica, the polyacrylamide and the polyaluminum chloride, and uniformly mixing. The composite water quality agglutination purifying agent has the advantages of being not affected by water temperature, suitable for both hot areas and severe cold areas, wide in applicable water quality range, high in removal rate of COD, TN, TP and the like, and capable of achieving the immediate and long-acting removal effect on algae.

Description

technical field [0001] The application relates to the technical field of sewage treatment, more specifically, it relates to a composite water coagulation purifying agent and a preparation method thereof. Background technique [0002] In recent years, with the continuous increase of my country's population and the rapid development of industrial and agricultural production, water demand has increased rapidly, and water pollution has become more and more serious. Water pollution is one of the most serious and harmful pollutions in the world today. In the sewage treatment process, coagulation and flocculation processes are indispensable and important units. There are many types of flocculants for water treatment. At present, the flocculation of industrial wastewater in my country Agents are mainly divided into three categories: organic polymer flocculants, inorganic flocculants and microbial flocculants. [0003] The most widely used is the inorganic flocculant, the inorganic f...

AI Technical Summary

Problems solved by technology

Aluminum salt flocculants include polyaluminum chloride (PAC), polyaluminum sulfate (PAS), polyaluminum phosphate (PAP), etc., and iron salt flocculants include polyferric phosphate (PFP), PFC (polyferric chloride), polysulfuric acid Iron (PFS), etc., but the aluminum salt and iron salt flocculants have certain restrictions on water temperature, pH value, high oil, high salt, high emulsification, high chroma, etc. For example, when the water temperature is low, the flocculant The hydrolysis speed is slow and incomplete. Even if the input amount of flocculant is increased and good reaction conditions are created, the influence of water temperature drop on the coagulation effect cannot be compensated; the influence of pH value is because the hydrolysis of aluminum salt produces amphoteric hydrogen. Aluminum oxide, under acidic and alkaline conditions, aluminum hydroxide is easily soluble in water. At this time, aluminum salts exist in the form of a large number of aluminum ions in water. Since aluminum ions have no adsorption and bridging effect, impurities in water cannot be bonded together, so the coagulation effect is not good

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