Pretreatment Method of Water Reuse System using Air Flotation and Continuous Microfilter

摘要

The present invention relates to a recycling system pretreatment method for treating effluent from sewage and wastewater treatment plants with pure water, and more specifically, organic matter, bacteria, and extracellular wastewater from sewage and effluents by using a pressurized floatation tank and a continuous precision filter. Pretreatment of sewage and wastewater recycling system using pressurized flotation and continuous precision filter to improve stability of reverse osmosis membrane facility, which is the main process by effectively treating Extracelluar Polymeric Substance, turbidity and color causing substances and floating substances. It is about a method.;The pretreatment method of the sewage / wastewater reuse system using the pressure flotation tank and the continuous precision filter according to the present invention is a pretreatment method of the system that reuses the sewage / wastewater, and after the discharged water is discharged from the sewage / wastewater treatment plant into the discharge tank, (A) aggregating contaminating particles by adding aluminum sulfate or polyaluminum chloride as a flocculant; Removing the extracellular polymer material formed by various organic substances, microorganisms or microorganisms which cause contamination of the membrane by introducing into the pressure flotation tank after the formation of the aggregate in step (a); And (c) removing the fine material from the treated water by supplying the treated water of step (b) to a continuous precision filter through an intermediate tank.