Wastewater and garbage integrated treatment method and device for cold areas

Abstract

The invention relates to the technical field of environment pollutant treatment and particularly discloses a wastewater and garbage integrated treatment method and device for cold areas. Organic garbage is subjected to composting treatment, wastewater is subjected to biochemical treatment, and heat generated by composting is transmitted to a wastewater biochemical treatment system to maintain the temperature needed by micro-biological pollutant degradation; the bad smell generated by composting is introduced into the wastewater biochemical treatment system to achieve the purposes of bad smell removing and oxygen supply at the same time; residual sludge generated by settling of wastewater is properly treated and then serves as a raw aerobic composting material; leachate generated by aerobic composting is treated through a wastewater treatment system on site. By means of the wastewater and garbage integrated treatment method and device for cold areas, discharge of the bad smell, the leachate and the residual sludge can be completely eradicated, no secondary pollutants are generated, the comprehensive treatment cost is low, energy conservation and environment protection are achieved, and the wastewater and garbage integrated treatment method and device for cold areas are especially suitable for rural cold areas.

Description

technical field [0001] The invention relates to the technical field of environmental pollutant treatment, in particular to the technical field of pollutant treatment in cold rural areas. Background technique [0002] Because of the dense population and concentration of living areas, cities can provide garbage collection, garbage classification and centralized garbage treatment services, and there are sewage pipe networks all over the city and centralized sewage treatment facilities to purify sewage. However, rural areas are limited by the regional environment. If garbage and sewage are classified and collected and treated in a centralized manner, huge investment will be required, which is difficult to implement. This has also caused the increasingly serious problem of rural sewage and domestic garbage pollution. [0003] More than 50% of rural domestic waste is organic waste, and this part of waste is generally used for composting for resource utilization. Composting is a p...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide an integrated treatment method for sewage and garbage in cold regions, which can solve the problems of secondary pollution and high total treatment cost caused by separate treatment of domestic sewage and organic waste in the prior art, and can simultaneously treat domestic sewage and organic waste. Organic waste, low processing cost, no secondary pollutants, can realize resource treatment, especially suitable for application in cold rural areas

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