Dirty water of service area through precipitate,filter,open into the air,consume nutrient in animal,plant and microorganism.The water of health grow to wait the step,and make purify the green fertilizer of water to can directly used for to irrigate and spray that park and farm crop,garden pond to keep the fish etc.Thoroughly resolve the dirty water row to put the problem,and again make the dirty water change to discard into treasure,greening environment.