Cooling system of aerobic sewage treatment tank

Abstract

The invention discloses a cooling system of an aerobic sewage treatment tank, wherein the system comprises a tank body; a first hollow rotating shaft and a second hollow rotating shaft are symmetrically, hermetically and rotatably connected to the inner wall of the tank body, and a plurality of stirring rods are fixedly connected to the side walls of the first hollow rotating shaft and the second hollow rotating shaft; and air inlet cavities communicating with the inner walls of the first hollow rotating shaft and the second hollow rotating shaft are formed in the plurality of stirring rods, and a plurality of air outlet holes are formed in the inner walls of the air inlet cavities. A motor rotates to drive a reciprocating lead screw to rotate, and then a sliding plug is driven to slide back and forth on the inner wall of a sliding plug cavity, so that the internal space of a first air pumping cavity is periodically increased and decreased, the first air pumping cavity intermittently pumps air through a one-way air outlet pipe, and under the action of a cooling cavity, the temperature of air flowing out of the one-way air outlet pipe is low; and when gas enters the first hollow rotating shaft and the second hollow rotating shaft through rotating joints and flows out of the air outlet holes, the temperature in the tank body can be reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an aerobic sewage treatment tank cooling system. Background technique [0002] With the increasing urban population and the continuous development of industry and agriculture, water pollution accidents occur frequently, seriously endangering the health and even life of people and animals. Many lakes and reservoirs are eutrophic due to the discharge of nitrogen and phosphorus, which seriously Threatening human production and life and ecological balance, the existing sewage process is that the raw sewage that first passes through the coarse grid is lifted by the sewage lift pump, then passes through the grid or sand filter, and then enters the grit chamber, and the sewage separated from sand and water Enter the primary sedimentation tank, and the sewage in the primary sedimentation tank enters the biological aeration treatment tank for purification treatment. [0003] The...

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Problems solved by technology

[0003] In the aeration tank, the harmful parts of the sewage are mainly purified by aerobic bacteria. However, in the high temperature weather at noon in summer, the aeration tank Under strong sunlight, its internal temperature is high, which makes the living environment of aerobic bacteria harsh, which can easily lead to the death of aerobic bacteria, and in high temperature weather, the oxygen content in the pool decreases, which is not conducive to the survival of aerobic bacteria. affect the efficiency of wastewater treatment

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