ADVANCED TREATMENT FLOTATION METHOD BY DISSOLVED NANO AIR BUBBLE WATER THAT DO NOT NEED REACTION, COAGULATION, NEUTRALIZATION TANK (NAF METHOD)

摘要

PURPOSE: An advanced treatment flotation method by dissolved a nano air bubble water that do not need reaction, coagulation, neutralization tank(NAF method) is provided to easily remove biologically recalcitrant substance, total nitrogen, total phosphorus. CONSTITUTION: A pressure pump(20) circulates processed water of a floating tank. A chemical injection pump discharges chemical from a chemical tank(52). A nano air bubble generator(100) expands and compress circulating water of an injector and supplies nano bubble to the inflowing water inlet of a division tank. A controller automatically control circulating water quantity, injected chemical quantity, and the level of the division tank and sludge rate.