Formula and preparation method of heavy metal sewage treatment agent

Abstract

The invention discloses a formula and a preparation method of a heavy metal sewage treatment agent. The heavy metal sewage treatment agent comprises the following raw materials of, by weight, 20-30 parts of corn straws, 10-20 parts of polymeric aluminum sulfate-silicate, 15-20 parts of polyacrylamide, 10-20 parts of activated carbon, 2-8 parts of diatomaceous earth, 5-10 parts of fly ash, 6-15 parts of sodium bicarbonate, 5-10 parts of sodium silicate, 0.1-1 part of cobalt oxide, 10-15 parts of anhydrous magnesium sulfate, 5-8 parts of chitosan, 1-8 parts of magnetic fluid, 5-8 parts of ferrocene, 5-10 parts of lecithin, 1-10 parts of cobalt phthalocyanine, 5-15 parts of bastose and 8-15 parts of sodium monofluorophosphate. The heavy metal sewage treatment agent achieves a synergistic effect through raw material compounding, and has the advantages that the heavy metal sewage treatment agent is environmentally friendly, high in purity, free of toxicity, simple in preparation method, lower in cost, and free of influence on operation workers, energy is saved, the raw materials are easy to obtain, and treated water has no secondary pollution.

Description

technical field [0001] The invention relates to a heavy metal sewage treatment agent, in particular to a heavy metal sewage treatment agent formula and a preparation method thereof. Background technique [0002] Heavy metal wastewater refers to wastewater containing heavy metals discharged from industrial production processes such as mining and metallurgy, machinery manufacturing, chemical industry, electronics, and instrumentation. Heavy metal wastewater mainly comes from wastewater discharged from mining, smelting, electrolysis, electroplating, pesticides, medicines, paints, pigments and other enterprises. The type, content and existing form of heavy metals in wastewater vary with different production enterprises. Heavy metal wastewater is one of the most serious environmental pollution and one of the most harmful industrial wastewater to humans, and its water quality and quantity are related to the production process. Heavy metals in wastewater generally cannot be decom...

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Problems solved by technology

[0003] At present, there are three main types of heavy metal wastewater treatment methods in various countries in the world: the first type is the method of removing heavy metal ions in wastewater through chemical reactions, including neutralization precipitation method, sulfide precipitation method, ferrite co-precipitation method, chemical reduction method, Electrochemical reduction method and polymer heavy metal trapping agent method, etc., but this method has a long reaction time and low treatment efficiency; the second type is to adsorb and concentrate heavy metals in wastewater without changing their chemical form , Separation methods, including adsorption, solvent extraction, evaporation and coagulation, ion exchange and membrane separation, etc., the treatment process is complex and the treatment cost is high; the third category is flocculation, absorption, accumulation, enrichment, etc. by means of microorganisms or plants The method of removing heavy metals in wastewater by action, including biological flocculation, biochemical method and plant ecological restoration, etc., this method has the disadvantages of high cost, immature technology, and easy to cause biological pollution

With the progress of society, the existing heavy metal sewage treatment agents tend to develop in the direction of environmental protection and energy saving, but there are still shortcomings such as low production efficiency, complicated preparation methods, and high raw material costs, and the therapeutic effect of the products also needs to be improved. The sewage water quality is poor and cannot meet the discharge standards

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