High-efficiency and stable wastewater treatment plant using bio-dopp process

Abstract

An improved wastewater treatment plant using the Bio-dopp process is provided, which is characterized in that the aeration aerobic area is designed as a ring ditch. The ring ditch has water propulsion units inside, and an admitting and mixing reaction area, a water elevating area, and a deposition area are disposed in the inner side thereof, and is communicated with the deposition area and the admitting and mixing reaction area respectively. Such a structure o f tanks solves the contradiction between the low DO and high sludge content which are required by the Biodopp process and ensures low DO and high sludge content, thus and ensuring the actual effect and exertion of competitive advantages of the Bio-dopp process. In the treatment, two or more circulations are formed, which not only facilitates the equipment maintenance without shutting down the whole system, but also providing high and adjustable reflux ratio. The adjustability of the practical operating is further improved by the controllable gates or valves added between the water elevating area and the ring ditch, which can be flexibly added or start or stop the aeration units according to the quality of water to be treated during or after construction, the gates and valves, so the system has good application scalability and adaptability.