Low-temperature evaporation treatment system for wastewater and landfill leachate

Abstract

The invention discloses a low-temperature evaporation treatment system for wastewater and landfill leachate. The system comprises a feed liquid collecting tank, a pretreated material heating tank, a low-temperature evaporation treatment unit, a steam compression system, a concentrated solution treatment system, a heat exchange steam treatment system and a steam scrubber tower system, wherein the feed liquid collecting tank is communicated with the pretreated material heating tank; the pretreatment material heating pool is connected with a feeding hole of the low-temperature evaporation treatment unit, the steam compression system is connected with a compressed steam inlet of the low-temperature evaporation treatment unit, the concentrated solution treatment system is connected with a concentrated solution outlet of the low-temperature evaporation treatment unit, and the concentrated solution treatment system is connected with the pretreatment material heating pool; the heat exchange steam treatment system is connected with a heat exchange steam outlet of the low-temperature evaporation treatment unit, the heat exchange steam treatment system is further connected with the pretreatedmaterial heating pool, and the steam scrubber tower system is connected with the low-temperature evaporation treatment unit and the steam compression system. The invention has the advantages of reasonable conception, low operating cost, good treatment effect, small occupied area and simple operation and control.

Description

technical field [0001] The invention relates to the technical field of waste water and sewage treatment, in particular to a low-temperature evaporation treatment system for waste water and landfill leachate. Background technique [0002] With the development of my country's economy and the improvement of people's living standards, a large amount of domestic waste is produced every day. Landfill leachate refers to the thick odorous liquid rich in organic and inorganic components formed due to biochemical degradation or compaction during the process of stacking and landfilling garbage in transfer stations. It has high organic matter and ammonia nitrogen content, high salt and high Oil and water quality changes greatly, and the smell is foul. At present, many garbage transfer stations lack supporting treatment facilities. When the landfill leachate is directly discharged into the rainwater pipe network into the river or into the municipal sewage pipe, the wastewater has become...

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Problems solved by technology

[0003] However, with the deepening of industrialization of traditional treatment technologies and the continuous increase of environmental protection supervision, the demand for the treatment of various industrial wastewater is increasing, the treatment standards are becoming stricter, and the treatment difficulty is becoming more and more difficult. The improvement of processing technology puts forward higher requirements

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