Urban domestic sewage and garbage integrated and circular type centralized treatment system

Abstract

The invention relates to an urban domestic sewage and garbage integrated and circular type centralized treatment system which comprises an organic garbage collection tank, a grinding device, a water collection tank, a pretreatment tank, an adjusting heating tank, an IC anaerobic reactor, an anaerobic tank, an I-level aerobic reaction tank, an II-level aerobic reaction tank, a sedimentation tank and a membrane treatment apparatus, wherein the IC anaerobic reactor comprises a tank body; the tank body internally consists of a first reaction chamber and a second reaction chamber sequentially connected from bottom to top; a jet-flow aeration stirrer is arranged between the first reaction chamber and the second reaction chamber; a bottom mud discharge pipe is arranged at the bottom of the IC anaerobic reactor; a feed pipe and a stirring turbine are arranged at the bottom in the first reaction chamber; the stirring turbine is arranged above the feed pipe; and an internal circulation backflow pipe and an internal circulation riser pipe are arranged in parallel in the second reaction chamber. The system provided by the invention is suitable for rural areas and small towns and is economical, efficient, energy-saving and simple and easy to implement.

Description

technical field [0001] The invention relates to the technical field of sewage and garbage treatment, in particular to an integrated and circular centralized treatment system for urban domestic sewage and garbage. Background technique [0002] At present, there are nearly 50,000 small towns of various sizes and natures in my country, and the urbanization rate in China has exceeded 50% in 2011. Some experts predict that 150-200 million rural population will transfer to cities in the next 10 years. The urbanization rate will reach 63-65%. my country's urbanization process has entered a period of high-speed growth in the law of economic development. [0003] According to statistics: At present, the annual sewage discharge in the country is about 35 billion cubic meters, but the centralized treatment rate of urban sewage has reached more than 80%, and more than 95% of the sewage in small towns and villages in counties across the country is directly discharged into the country with...

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Problems solved by technology

However, this will impose a certain burden on the governments and people of small towns with weak economic strength, limited resources, and constraints of various natural conditions.

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