A non-contact and efficient low-temperature evaporation system for landfill leachate

Abstract

The invention relates to a non-contact surface and highly efficient low-temperature evaporation system for landfill leachate, which includes an evaporator, a raw liquid tank, an electric hot air generator and a heat pump mechanism, wherein: the evaporator has a steam outlet and a concentrated liquid outlet, and there is a gas outlet inside the evaporator. The hot gas release mechanism and the atomizing nozzle mechanism in liquid horizontal convection contact; the raw liquid tank is connected with the atomizing nozzle mechanism and has a water inlet; the electric hot air generator is connected with the hot gas releasing mechanism; the heat pump mechanism is equipped with a cold air inlet, a hot air outlet, The inlet is connected to the condensed water outlet, and the steam inlet is connected to the steam outlet, and the hot air outlet is connected to the electric hot air generator through the fan. Compared with the prior art, the present invention can realize heat recycling through the heat pump, recover steam heat, and reduce energy consumption; the leachate can be reduced, and the condensed water discharged can meet the sewer discharge standard; the gas-liquid horizontal convection contact can improve seepage The evaporation efficiency of the filtrate solves the problems of scaling, clogging and corrosion.

Description

Technical field [0001] The present invention belongs to the field of environmental protection technology, relates to landfill leachate treatment, in particular to a contactless and efficient landfill leachate low temperature evaporation system. Background [0002] Landfill leachate is the secondary pollution generated after the sanitary landfill of municipal solid waste. Leachate not only varies greatly in water quantity, but also does not change periodically, which causes a large change in water quality. Contaminants are diverse, highly concentrated, and have a wide range of concentration variations. At the same time, the water quality of leachate will also be different from the age of the landfill, each with its own characteristics, and the proportion of biodegradable organic matter will show a straight upward trend. Under the action of the atmosphere, precipitation and self-degradation of garbage, it directly or indirectly pollutes water bodies, which greatly affects people's ...

AI Technical Summary

Problems solved by technology

The most common treatment process for landfill leachate is "biological method + membrane treatment", but it has problems such as a large area of ​​the treatment project and a large amount of concentrated liquid, which makes it difficult to adapt to small-scale leachate treatment, especially in transfer stations. Leachate Treatment

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