The present invention relates to a domestic washing waste water recovery and reutilization system equipment. Said system equipment is composed of water treatment device, filter and sensing electric control system. Said water treatment device includes a container and a chemicals-adding bottle, and said container includes the following several portions: water inlet, water outlet, electromagnetic valve, exhaust outlet, ozonator, water level sensor, aeration head group and air pump, etc. The sensing control circuit is a main circuit formed from chip microprocessor system, A/D converter and I/O expander. Besides, said invention also provides its working principle, and its concrete method and steps. |