ADVANCED WASTEWATER TREATMENT SYSTEM FOR LIVESTOCK WASTEWATER

摘要

PURPOSE: Provided is an advanced wastewater treatment system for livestock wastewater which contains the organic matter of high concentration, suspended solids, nitrogen, phosphorus and colors. CONSTITUTION: The advanced wastewater treatment system comprises a pre-treatment tank(2) to remove selectively ammonium and phosphorus in livestock wastewater; an anaerobic reactor(3) for denitrification of the wastewater passed from the former part by oxidative fermentation in the upper denitrification zone; a nitrification reactor(4); a post-treatment tank(6) to remove the residual nitrate of the anaerobic reactor and the nitrification reactor; and a fenton-oxidation reactor(8) to eliminate phosphorus, organic matters and colors in the wastewater treated from the former post-treatment tank and disinfect. The pre-treatment tank comprises a mixing tank and a settling tank, which enhance the denitrification efficiency by maintaining the ratio of organic matters : nitrogen of 6 : 1 by the MAP(magnesium ammonium phosphate) settling method.