To achieve the above and other purposes, the invention provides a reversible washing floating bed reverse sewage treatment system for filtering sewage into purified water, which preferably comprises: a sewage filter tank, which is a closed container with a sewage filter chamber inside, a sewage inlet pipe connected to the sewage treatment chamber is arranged near the bottom, and a sewage inlet pipe connected to the sewage treatment chamber is arranged near the top The water purification and drainage pipe of the water treatment room; most of the light filter sand is filled in the sewage filter room, and is gathered on the top of the sewage filter room through the buoyancy of water; one end of the filter sand cleaning tank is connected with the top of the sewage filter room of the sewage filter tank through a sand inlet pipe, and the other end is connected with the sewage filter room of the sewage filter tank through a sand outlet pipe The utility model is used for circulating cleaning the light filter sand, a back washing nozzle, which extends into the sewage filter chamber of the sewage filter tank and is located above the water purification drainage pipe, which is used for inputting a clear water to wash the light filter sand, and a sludge discharge device, which is arranged at the bottom of the sewage filter tank and connected with the sewage filter chamber for discharging the bottom deposited sludge.<br>
正在翻譯中..
