METHOD AND EQUIPMENT FOR TREATING WASTEWATER FROM FOOD PROCESSING FACTORY USING TWO-STAGE AERATION PROCESS

摘要

The present invention is about a treatment method of waste water generated in food processing plant by two position aeration process which solve environmental reformation and environmental pollution. The present invention comprises a process of filtering process material with screen, inflowing filterate in first settling tank and sending residual to thickener; a process of mixing process material inflowed in first settling tank with sludge recycled from second settling tank also the last settling tank; a process of sending sludge to thickener by solid-liquid separation with gravity in first thickener, diluting supernatant with dilution water and inflowing ore position aeration bath by controlling pH; a process of transfering process material accumulating in one position aeration tank at a long time and removing organic matter and pollution matter and like this in second settling tank; a process of recycling sludge first settling tank and transfering supernatant to one position aeration tank by solid-liquid separation process material with gravity in second settling tank; a process of absorbed decomposition fine floc formed by residual and first aeration using aerobic microorganism adhesive to porous plate filter medium having flexibility in second aeration tank; a process of effluxing supernatnat and internal recycling a part and the rest to first settling tank by solid-liquid separation with gravity transfering process material said process to last settling tank; a process of dehydrating in thickening sludge in thickener desiccator.