A CHEMICAL METHOD TO PREVENT BIOLOGICAL FOULING ON THE FILTER GRAINS OF THE MEDIA FILTRATION EQUIPMENT IN WASTEWATER TREATMENT FACILITY AND DEVICE THEREOF

摘要

The present invention relates to a method and apparatus for preventing clogging of a filter in a sewage treatment plant. The method of the present invention provides a chlorine solution by dissolving solid chlorine in water, and injecting the mixed solution by injecting the chlorine solution into washing water. It characterized in that the spray to the filter to prevent filter clogging, the apparatus of the present invention is a chemical dissolution tank (10) for dissolving the drug; Admixture 12 to mix the drug well in the drug dissolution tank; A fixed-quantity pump 14 for pumping a chemical solution from the chemical solution tank in a predetermined amount; Chemical dissolution water supply pipe 16 for supplying the discharge water filtered through the filter (2) to the chemical dissolution tank (10) for dissolution of the chemical; A chemical solution injecting pipe 18 for injecting the chemical solution pumped from the metering pump 14 into the washing water supply pipe 28 so as to be mixed with the washing water; And an injection device 20 for spraying the washing water pressurized by the washing water pump 22 to the filter 2.;The method and apparatus for preventing the blockage of the filter of the sewage treatment plant of the present invention is to prevent the clogging of the filter medium by chemically dispersing the colloid in a method of administering a chemical agent of the same (-) charge as the colloid, destroying the electrodynamic balance, and pressure spraying. I can solve it.;Sewage Treatment Facilities, Filters, Filtration Materials (Media), Microorganisms, Colloids, Injectors