Apparatus and method for treating high-concentration nitrogen-containing dirty waste water such as waste water from livestock farmer and excreta

Abstract

The invention relates to an apparatus and a method for treating high-concentration nitrogen-containing dirty waste water such as waste water from a livestock farmer and excreta. The apparatus is composed of a screen tank 10 with original water inlet 12 and screen meshwork 11, a flow rate adjustment tank 20 arranged in back of the screen tank 10, an aeration tank 70 and an anaerobic treatment tank 50 formed adjacent to the aeration tank 70 by arranging a partition wall 52 in one side of the aeration tank 70, a concentrate tank 90 and a dehydrate device. The apparatus is characterized in that: the upper section of the partition wall 52 is integrated configured to be higher than the water surface; an agitator 80 which is rotated at a low speed and has multistage impellers 81 is arranged in the anaerobic treatment tank 50; the lower section of the anaerobic treatment tank 50 is connected with the inner of the aeration tank 70, and an outlet for the treated water is arranged at the upper section of the anaerobic treatment tank 50; a plurality of air intakes 110 are arranged in the lower part of the aeration tank 70, and the upper side of the air intake 110 is provided with a sphericity container 120 by a supporting table 121; metallic meshwork 122 and 123 are respectively installed on the underside outer edge and the upside outer edge of the sphericity container 120.

Description

technical field [0001] The present invention relates to the treatment device and method of sewage with high nitrogen concentration such as animal husbandry waste water and excrement and urine, that is, an anaerobic pool with a sludge (sludge) layer formed therein is integrally arranged in an aeration tank, and in an aerobic state Oxidize and decompose pollutants, and then remove organic matter and nitrogen in facultative anaerobic and anaerobic states; and achieve the effect of phosphorus removal by removing sludge containing excess phosphorus, according to animal husbandry wastewater and manure The pollutants contained in sewage with high nitrogen concentration and the required water quality, the above-mentioned technological process is set as single-stage or multi-stage, so as to improve the treatment efficiency, and by making the mesh of the agitator installed in the anaerobic tank Or the strip (bar) blade (Impeller) rotates at a low speed to uniformly stir the inside of th...

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Problems solved by technology

[0009] However, when the sludge with a certain weight in the above-mentioned anaerobic tank is slowly filtered by the facultative anaerobic and anaerobic sludge layer, and is recycled to the bottom of the aeration tank 70, a partial reaction occurs inside the anaerobic tank, and microorganisms cause The nitrification reaction speed is slow, so that the nitrogen cannot be released smoothly, and it also causes anaerobic sludge to float out, so that the above sludge cannot be treated

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