Solar heating evaporation treatment process and apparatus for garbage

Abstract

The invention relates to a process and a device for treating a landfill leachate by solar energy heating and evaporation. The process comprises the following steps that: a landfill leachate in a thermal heating tank is collected by utilizing a solar thermal collector, heated, evaporated and condensed in a condenser; and a condensate is reclaimed by a condensate recoverer and enters an active carbon adsorption posttreatment tank for carrying out posttreatment. The evaporation treatment device consists of the solar thermal collector, a hot water storage tank, a water replenishing pipe of the hot water storage tank, a circular coil tube type heat exchanger, a water replenishing tank, a leachate evaporation tank, a parallel calandria type heat exchanger, a condenser, the condensate recoverer, the active carbon adsorption posttreatment tank, an effluent water discharge pipe, etc. The process and the device for treating the landfill leachate by solar energy heating and evaporation use solar energy as main energy and have the advantages of low energy consumption and low operating cost.

Description

technical field [0001] The invention relates to a process and device for treating landfill leachate by solar energy heating and evaporation, which is a novel process and device for treating landfill leachate by using solar energy heating and evaporation, and belongs to the technical field of environmental pollution control. Background technique [0002] With the promotion of urban waste sanitary landfills, a large amount of landfill leachate needs to be treated as necessary. Compared with general wastewater, the concentration of ammonia nitrogen in landfill leachate is high, the values ​​of COD and BOD are large, and it contains a certain amount of heavy metal ions. Therefore, the treatment of landfill leachate has always been a technical problem in the field of environmental protection. At present, the problems existing in the landfill leachate treatment process mainly include: ①The technically feasible processes are all poor in economy, such as the investment and operatio...

AI Technical Summary

Problems solved by technology

At present, the problems existing in the landfill leachate treatment process mainly include: ①The technically feasible processes are all poor in economy, such as the investment and operation costs of the membrane treatment process are high, and there are many concentrates that need to be further processed. treatment; while the operating cost of the chemical oxidation process is basically unaffordable

② It is difficult to meet the discharge standard in terms of treatment effect of a process with good economic efficiency. For example, the investment and operation cost of biological treatment process are low, but usually the effluent cannot meet the discharge standard

[0004] The existing landfill leachate evaporation treatment at home and abroad uses burners, heat pumps, etc. to provide the heat required for landfill leachate evaporation, which consumes a lot of conventional energy, so the energy utilization rate is low

Moreover, the landfill leachate evaporation treatment process that uses commercial fuel as the heat source still has the defect that the tail gas is difficult to deal with.

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