Disinfection powder for sewage, and preparation method and application method thereof

Abstract

The invention provides a sewage disinfector, and a preparation method and application method thereof. The sewage disinfector comprises, by mass, 40 to 60% of potassium monopersulfate, 0 to 5% of calcium peroxide, 4 to 15% of magnesium sulfate, 6 to 12% of iron chloride, 5 to 15% of sodium bicarbonate, 0 to 7% of nanometer titanium dioxide, 0 to 10% of chitosan, 0 to 12% of starch xanthate, 3 to 8% of fatty acid monoglyceride, 4 to 20% of a weak acid component and 1 to 15% of a stabilizing agent. After dissolving of the sewage disinfector provided by the invention, a plurality of high-activity free radicals are continuously produced and exert combined disinfection effect, so the sewage disinfector has the advantages of a wide disinfection spectrum, good disinfection effect, high efficiency and safety; through combined usage of three flocculating agents consisting of iron chloride, chitosan and starch xanthate, the sewage disinfector can remove metal ions, radioactive substances and organic matters in water and effectively decrease CODs and BODs in a water body; and nanometer titanium dioxide can kill a plurality of bacteria and fungi in water in long duration and is free of toxicity and harm. When the sewage disinfector is applied to treatment of sewage, procedures like grating filtering, fermentation, precipitation and flotation are not necessarily needed, so the sewage disinfector is convenient to use.

Description

technical field [0001] The invention relates to the technical field of medical sewage and domestic sewage treatment, in particular to a sewage disinfection powder, a production method and a use method thereof. Background technique [0002] According to statistics, the per capita domestic sewage is 100-150L / day. The pollutants in domestic sewage mainly include detergent, garbage, and feces. Domestic sewage contains a large amount of organic matter, which provides convenience for the existence of pathogenic bacteria and viruses. Generally, domestic sewage contains 100,000-1 million bacilli / ml. Streptococcus 10-100,000 / ml, in addition to various pathogenic bacteria. Common pathogens in sewage are: pathogenic bacteria, enteroviruses, and worm eggs. The composition of medical sewage varies greatly depending on the area, scale, and nature of the hospital; hospital sewage often contains pathogens, organic matter, inorganic matter, radioactive metal ions, etc.; the content of untr...

AI Technical Summary

Problems solved by technology

Liquid chlorine disinfection method uses liquefied chlorine gas. Chlorine gas itself is toxic, and carcinogenic by-products are introduced during the disinfection process, and special storage devices are required, which cannot kill Cryptosporidium; chlorine dioxide disinfection method uses chlorine dioxide , Chlorine dioxide itself is unstable, prone to explosion, and the risk of transportation and storage is high. Like chlorine, carcinogens will be introduced in the disinfection process; sodium hypochlorite disinfection requires special sodium hypochlorite production equipment, and the disinfection effect is poor, and it will also produce Carcinogens; ultraviolet disinfection method, affected by the clarity of the water body, studies have shown that ultraviolet light only makes some pathogenic bacteria enter a dormant state, and does not completely kill all pathogenic bacteria; ozone disinfection method, ozone reacts with organic matter in sewage, It has strong disinfection ability, but ozone is unstable and has no continuous disinfection ability, and ozone will introduce some toxic and harmful substances during the disinfection process

The traditional disinfection method of domestic sewage and medical sewage only has disinfection effect, cannot effectively reduce COD and BOD in water, and is powerless to suspended solids, heavy metal ions, and radioactive substances in water. Sewage treatment needs to go through grid filtration, fermentation, and precipitation , It can be used only after flotation, which is inconvenient to use