Distributed and structured town sewage pelletization treatment process and pelletization reactor

A sewage treatment and reactor technology, applied in the field of village sewage treatment and environmental protection, can solve the problems of large volume, secondary pollution, high moisture content of excess activated sludge, and achieve the effect of low sludge output and small organic matter concentration gradient.

CN106007178AInactive Publication Date: 2016-10-12阿斯旺(北京)环保科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-10-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a distributed and structured town sewage treatment pelletization reactor which comprises a reactor body, a BDR gas stripping backflow device, a titanium alloy aerator, an ultraviolet disinfection device, an ultrasonic solid-liquid separation device, an ORP oxidoreduction potentiostat, a biological enzyme adding device, an oilless silent air compressor and the like. The reactor body forms an anaerobic granular sludge-aerobic granular sludge-biological enzyme ternary coupling recycling water purification pelletization treatment process. The pelletization reactor is a biological compositing tank, and after anaerobic-aerobic-biological enzyme ternary coupling composting, discharged sludge contains rich enzymes, nitrogen, phosphorus, potassium and other nutrients and can be directly used as high-quality green organic fertilizer. Large-proportion BDR gas stripping backflow is adopted, the very small organic matter concentration gradient in the pelletization reactor is guaranteed, the unevenness of inflow water is eliminated, the problems about town sewage quality and water yield load impacts are solved, and the investment cost per ton of water is greatly reduced. The invention further discloses the distributed and structured town sewage pelletization treatment process.
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Description

technical field

[0001] The invention relates to the field of environmental protection and to the technical field of village and town sewage treatment, in particular to a distributed and structured village and town sewage pelletization treatment process and pellet reactor technology. Background technique

[0002] my country is a large agricultural country, and nearly 90% of the country's total area is rural areas. According to estimates, the annual sewage discharge of villages and towns is as high as 30 million m 3 , BOD discharged into the environment is about 5.3 million tons / day, COD is about 8.6 million tons / day, total nitrogen is about 960,000 tons / day, and total phosphorus is about 140,000 tons / day, which is one of the main reasons for the deterioration of the water environment .

[0003] The long-term urban-rural dual structure has led to an extreme imbalance between urban and rural areas in terms of sewage treatment. Statistics show that 96% of the villages have no...

Examples

Embodiment Construction

[0036] The present invention is further described in conjunction with the following examples.

[0037] The first purpose of the present invention is to provide a distributed, structured pelletizing reactor for sewage treatment in villages and towns, which is realized by the following technical solutions:

[0038] like figure 1 The distributed and structured village and town sewage treatment pelletization reactor shown includes the main body of the reactor and supporting equipment. The main body of the reactor includes ABR anaerobic pellet reaction zone 2, BDR air stripping reflux device 4, AGS aerobic pellet reaction zone 6, CST adsorption and precipitation module 7 placed inside AGS aerobic pellet reaction zone 6 and A biological enzyme dosing device 10 for adding biological enzymes to the AGS aerobic pellet reaction zone 6 , and the biological enzyme dosing device 10 is arranged on the top of the AGS aerobic pellet reaction zone 6 . The supporting equipment includes water ...