Micro-aeration filler biological membrane type wastewater treatment device

Abstract

The invention relates to a wastewater treatment device, in particular relates to a micro-aeration filler biological membrane type wastewater treatment device, and belongs to the technical field of wastewater treatment. The micro-aeration filler biological membrane type wastewater treatment device comprises an air compressor, a gas storage tank, a water body pond and a plurality of micro-aeration biological membrane fillers, wherein the air compressor is connected with the gas storage tank through a gas pipe; the plurality of micro-aeration biological membrane fillers are arranged in the water body pond and comprise a plurality of hollow fiber membranes parallel to each other; the gas inlet ends of the plurality of hollow fiber membranes are connected with a gas inlet end seal head; the gas outlet ends of the plurality of hollow fiber membranes are connected with a gas outlet end seal head. According to the micro-aeration filler biological membrane type wastewater treatment device, the fillers are subjected to non-foaming gas feeding, the sludge cannot be generated, a blower and a sludge treatment device do not need to be mounted, the wastewater treatment cost is effectively reduced, the working noise is lowered, and the energy resources are saved; a filler biological membrane has huge specific surface area and can be used for effectively reducing the volume of the water pond.

Description

technical field [0001] The invention relates to a sewage treatment device, in particular to a micro-aeration filler biofilm sewage treatment device, which belongs to the technical field of sewage treatment. Background technique [0002] Biofilm sewage treatment is a technology that makes microorganisms such as nitrifying bacteria and denitrifying bacteria fix on the surface of the filler and grow in the form of a film to achieve sewage treatment. In the water treatment project in the environmental protection industry, especially the aerobic part involved in the biological treatment of activated sludge, the diaphragm aerator installed in the aerobic tank is currently used for treatment. Diaphragm aerator uses Roots blower for oxygen supply, and PP, PE and other fillers are generally installed in the aerobic tank as the carrier for microbial attachment. Show through a large amount of practice, there is following technical defect in above-mentioned treatment process: [0003]...

AI Technical Summary

Problems solved by technology

[0003] 1. The oxygen utilization efficiency is low, the oxygen utilization rate of perforated aeration is less than 7%, and the oxygen utilization rate of microporous aeration is only about 20%;

[0004] 2. The air volume is uncontrollable. Once the corresponding blower is selected, the air supply in the water can only be adjusted by emptying, but this also means a lot of waste of energy consumption of the blower;

[0005] 3. Secondary pollution, bubbling oxygen supply will bring out volatile pollutants in the water body, some even have an unpleasant smell;

[0006] 4. The energy consumption is high, and aerobic treatment must use a high-power blower to continuously supply oxygen to the water body. Due to the low utilization rate of oxygen, the power consumption of the blower is large;

[0007] 5. The noise is high. Since the blower is used to supply oxygen to the water body, the noise of the blower is generally 70~80DB, which brings noise pollution to the environment;

[0008] 6. The sludge output is high, and a large amount of excess sludge produced in the aerobic tank needs to be disposed of separately. At present, the disposal of sludge has become an urgent problem to be solved;

[0009] 7. It occupies a large area. In order to improve the treatment effect, especially the removal of total nitrogen, it is necessary to build anaerobic pools and aerobic pools. In addition, additional sedimentation tanks, secondary sedimentation tanks, and third sedimentation tanks are required for the effluent, and the infrastructure costs are large. Even if MBR technology is currently used to avoid secondary sedimentation tanks, there are still problems such as membrane pollution;

[0010] 8. The installation cost is high. In addition to the infrastructure, the installation cost of filler and aeration device is generally required

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