V-type air lift backflow two-stage sedimentation integrated sewage treatment tank

Abstract

The present invention provides a V-shaped gas stripping reflux two-stage precipitation integrated sewage treatment tank, wherein the rectangular tank body contains an anaerobic zone, an anoxic zone, an aeration zone, a V-shaped clarifying reflux zone and an inclined pipe / plate precipitation zone, wherein the water surface on the upper portion of a vertical separation wall arranged between the anoxic zone and the aeration zone is provided with a reflux hole, is matchedly provided with an umbrella-shaped stirrer and an auxiliary flow maker, and is further provided with an inclined hole-type gas-water separator, a surface type gas stripping micro power reflux device, an L-shaped hydropower hybrid spiral flow generator and other equipment so as to achieve gas stripping reflux of a nitrification liquid and sludge, and achieve a two-stage precipitation treatment on a mixed solution after a biochemical reaction. The V-shaped gas stripping reflux two-stage precipitation integrated sewage treatment tank has a simple and compact structure, and has the following advantages that: denitrogenation, phosphorus removing and precipitation separation are completed in the same tank; and compared with the conventional biochemical reaction tank, the secondary precipitation tank, the coagulation reaction tank and the inclined pipe precipitation tank, the V-shaped gas stripping reflux two-stage precipitation integrated sewage treatment tank of the present invention has advantages of low investment, small occupation area, less agent consumption, less sludge discharge, low energy consumption, low cost, stable and controllable water quality, easy operation and management, and the like.

Description

technical field [0001] The present invention relates to an integrated sewage treatment pool, especially utilizing the principle of air lift and the principle of two-stage sedimentation at the same time, and utilizing the ingenious structure of complementary spaces on the upper and lower sides of the V-shaped partition wall to achieve high-efficiency denitrification and phosphorus removal functions and Sewage treatment tank with integrated compact design. Background technique [0002] Conventional sewage treatment methods are mainly biochemical methods, namely activated sludge method and biofilm method. Among them, activated sludge method is the most widely used secondary biological treatment process in various countries in the world. The earlier activated sludge process was mainly to remove organic pollutants, and now it has fully entered the process stage of not only removing organic pollutants, but also removing nitrogen and phosphorus. The principles of activated sludge ...

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