CN-120483309-B - Zero discharge treatment device and method for leachate of household garbage landfill

Abstract

The invention discloses a zero discharge treatment device and method for leachate in a household refuse landfill, which relate to the technical field of leachate treatment and comprise a base, wherein a supporting frame is fixedly arranged at the top of the base, the inner wall of the support frame, which is close to the top, is fixedly provided with a support sleeve seat, the inner wall of the support sleeve seat is fixedly provided with an evaporation tank, and the top of the base is provided with a liquid heating mechanism. According to the invention, through the integral design of the liquid heating mechanism, when the circulating pump works, heat conduction oil can circulate from the inner cavities of the heat conduction oil tank, the conveying pipe, the heating sleeve and the return pipe, and meanwhile, the heating wire is controlled to work, so that the heat conduction oil can be heated, namely, the function of heating concentrated liquid in the evaporation tank is realized, the temperature of the heat conduction oil flowing back into the inner cavity of the heat conduction oil tank can be detected through the design of the temperature sensor, and when the temperature is higher than a preset value, the heating wire is controlled to stop working, and the problem that the continuous working can cause larger electric energy consumption is avoided.

Inventors

• XU PING
• WU SHIJUN
• CHEN YANGYANG

Assignees

• 杭州齐创环境工程有限公司

Dates

Publication Date

20260512

Application Date

20250506

Claims (4)

1. 1. The leachate zero-emission treatment device for the household garbage landfill is characterized by comprising a base, wherein a supporting frame is fixedly arranged at the top of the base, a supporting sleeve seat is fixedly arranged on the inner wall, close to the top, of the supporting frame, an evaporation tank is fixedly arranged on the inner wall of the supporting sleeve seat, a liquid heating mechanism is arranged at the top of the base, a liquid stirring mechanism is arranged at the top of the supporting frame, and a condensing mechanism is arranged at the top of the base; The liquid heating mechanism comprises supporting legs and a heat conduction oil tank, wherein the supporting legs are fixedly arranged at the top of a base, a heating sleeve is fixedly arranged at the top of the supporting legs, a vacuum cavity is arranged in the heating sleeve, a copper extension tank is fixedly arranged on the inner wall of the heating sleeve, the copper extension tank is fixedly connected to the bottom of an evaporation tank, a return pipe is fixedly connected to the top of the heating sleeve, the heat conduction oil tank is fixedly arranged at the top of the base, one end, far away from the heating sleeve, of the return pipe is fixedly connected to the top of the heat conduction oil tank, a circulating pump is fixedly arranged at the bottom of the heat conduction oil tank, the input end of the circulating pump is fixedly connected to the bottom of the heat conduction oil tank, and a conveying pipe is fixedly connected to the output end of the circulating pump, and one end, far away from the circulating pump, of the conveying pipe is fixedly connected to the bottom of the heating sleeve; The liquid stirring mechanism comprises a supporting frame and a heightening seat, the supporting frame is fixedly arranged at the top of the supporting frame, the heightening seat is fixedly arranged at the top of the supporting frame, a vertical rod is fixedly arranged at the top of the heightening seat, a screw rod is rotationally connected to the top of the heightening seat, the top of the vertical rod is fixedly connected with the bottom of the supporting frame, the top of the screw rod is rotationally connected with the bottom of the supporting frame, a servo motor is fixedly arranged at the top of the supporting frame, and an output shaft of the servo motor is fixedly connected with the top of the screw rod; The vertical rod and the outer wall of the screw rod are connected with a sliding seat in a sliding manner, a top cover is fixedly arranged on the right side of the sliding seat, the top cover is movably inserted into the top of the evaporation tank, a branch pipe is detachably connected to the top of the top cover, one end, far away from the top cover, of the branch pipe is fixedly connected with a centralized pipe fitting, and the back surface of the centralized pipe fitting is fixedly connected with a transfer pipe; The top of the top cover is fixedly provided with a driving motor, the bottom of the top cover is rotationally connected with a rotating seat, an output shaft of the driving motor is fixedly connected with the top of the rotating seat, the bottom of the rotating seat is detachably connected with a rotating shaft, and the outer wall of the rotating shaft is fixedly provided with a stirring paddle; The condensing mechanism comprises a condensing treatment bin, the condensing treatment bin is fixedly arranged at the top of the base, an electromagnetic valve is fixedly connected to the top of the condensing treatment bin, one end, far away from the centralized pipe fitting, of the transfer pipe is fixedly connected to the top of the electromagnetic valve, a water inlet valve pipe and a water outlet valve pipe are fixedly connected to the right side of the condensing treatment bin, and a centralized guiding-out cover is fixedly connected to the bottom of the condensing treatment bin; The inner wall of the condensation treatment bin is fixedly provided with a first square baffle, the inner wall of the condensation treatment bin is fixedly provided with a second square baffle, the bottom of the first square baffle is fixedly connected with a connecting pipe, the bottom of the connecting pipe is fixedly connected with a heat exchange copper pipe, and the heat exchange copper pipe is fixedly connected to the top of the second square baffle; The inner wall of the connecting pipe is fixedly provided with an inner supporting ring, the inner wall of the inner supporting ring is fixedly connected with a connecting rod, one end of the connecting rod, which is far away from the inner wall of the inner supporting ring, is fixedly connected with an inner rotating block, the inner wall of the inner rotating block is rotationally connected with an upper shaft part, the outer wall of the upper shaft part is fixedly provided with a driving blade, the bottom of the inner rotating block is fixedly connected with a lower shaft part, the outer wall of the lower shaft part is fixedly connected with a diagonal rod, one end of the diagonal rod, which is far away from the lower shaft part, is fixedly connected with a scraping strip, and the side surface of the scraping strip is movably connected with the inner wall of the heat exchange copper pipe.
2. 2. The device for zero discharge treatment of leachate in a household garbage landfill is characterized in that an inner partition plate is fixedly arranged on the inner wall of the heat conduction oil tank, a controller is fixedly arranged at the top of the heat conduction oil tank, a screen plate is fixedly arranged on the inner wall of the inner partition plate, and a temperature sensor is fixedly arranged at the top of the screen plate.
3. 3. The device for zero discharge treatment of leachate in a household garbage landfill is characterized in that a through groove is formed in the top of the inner partition plate, a copper sleeve is fixedly arranged on the inner wall of the through groove, an electric heating wire positioned in an inner cavity of the copper sleeve is fixedly arranged on the inner wall of the through groove, and heat exchange fins are fixedly connected to the outer wall of the copper sleeve.
4. 4. The method for using the leachate zero-discharge treatment device of the household garbage landfill according to any one of claims 1 to 3, which is characterized by comprising the following steps: s1, controlling a servo motor to work firstly, driving a sliding seat to move upwards, enabling a top cover to move upwards from the top of an evaporation tank, adding concentrated solution to be treated into an inner cavity of the evaporation tank, controlling the servo motor to work again, driving the top cover to move downwards and reset, and completing the adding work of the concentrated solution; S2, controlling the circulating pump to work, so that heat conduction oil circulates from the inner cavities of the heat conduction oil tank, the conveying pipe, the heating sleeve and the return pipe, and simultaneously controlling the heating wire to work, and heating the heat conduction oil, namely, realizing the function of heating the concentrated solution in the evaporation tank, thereby promoting the evaporation of the concentrated solution; and S3, after evaporation is finished, controlling the servo motor to work to drive the top cover to move upwards integrally, and then extracting solid products reserved in the inner cavity of the evaporation tank, and then carrying out subsequent treatment.

Description

Zero discharge treatment device and method for leachate of household garbage landfill Technical Field The invention relates to the technical field of leachate treatment, in particular to a zero discharge treatment device and method for leachate in a household garbage landfill site. Background The leachate of the household garbage landfill refers to a pollutant enrichment liquid formed by mixing precipitation, groundwater and liquid generated by self biodegradation of garbage in the landfill process. The organic fertilizer contains high-concentration organic matters, heavy metals, ammonia nitrogen, salt, pathogenic microorganisms and other harmful components, and has the characteristics of complex components, strong toxicity and high treatment difficulty. If the water is discharged directly without proper treatment, the soil, the underground water and the surrounding ecological environment are seriously polluted, and the human health is threatened, so that strict control is required by the combined processes of pretreatment, biological treatment, advanced treatment and the like. The leachate zero emission refers to the full-flow innocent treatment of leachate generated by landfill sites, incineration plants and the like through an integrated treatment technology, water is recycled, residual pollutants are converted into solid products (such as crystalline salt, sludge and the like) and are safely disposed, and finally, the zero emission of liquid pollutants to the external environment is realized. The technology aims to thoroughly block the pollution risk of the percolate to the ecological systems such as soil, underground water and the like, and meets the requirements of the circular economy concept and environmental regulations. The leachate can produce concentrate after carrying out reverse osmosis treatment, needs to carry out evaporation crystallization to concentrate this moment and handles safely, and residual pollutant turns into solid product to realize zero release's function, current evaporation crystallization device adopts steam to heat concentrate more and makes its evaporation, and steam heat supply is unstable, can not carry out accurate control to the temperature of heating, and then leads to the efficiency of energy utilization lower, and unstable temperature still influences the life of equipment easily. Disclosure of Invention The invention aims to provide a device and a method for zero discharge treatment of leachate in a household refuse landfill, so as to solve the problems in the background technology. In order to solve the technical problems, the invention adopts the following technical scheme: the leachate zero-emission treatment device for the household garbage landfill comprises a base, wherein a supporting frame is fixedly arranged at the top of the base, a supporting sleeve seat is fixedly arranged on the inner wall, close to the top, of the supporting frame, an evaporation tank is fixedly arranged on the inner wall of the supporting sleeve seat, a liquid heating mechanism is arranged at the top of the base, a liquid stirring mechanism is arranged at the top of the supporting frame, and a condensing mechanism is arranged at the top of the base; The liquid heating mechanism comprises supporting legs and a heat conduction oil tank, wherein the supporting legs are fixedly arranged at the top of a base, a heating sleeve is fixedly arranged at the top of the supporting legs, a vacuum cavity is arranged in the heating sleeve, a copper extension tank is fixedly arranged on the inner wall of the heating sleeve, the copper extension tank is fixedly connected to the bottom of an evaporation tank, a return pipe is fixedly connected to the top of the heating sleeve, the heat conduction oil tank is fixedly arranged at the top of the base, one end of the return pipe, far away from the heating sleeve, is fixedly connected to the top of the heat conduction oil tank, a circulating pump is fixedly arranged at the bottom of the heat conduction oil tank, the input end of the circulating pump is fixedly connected to a conveying pipe, and one end of the conveying pipe, far away from the circulating pump, is fixedly connected to the bottom of the heating sleeve. Preferably, an inner partition plate is fixedly arranged on the inner wall of the heat conduction oil tank, a controller is fixedly arranged at the top of the heat conduction oil tank, a screen plate is fixedly arranged on the inner wall of the inner partition plate, and a temperature sensor is fixedly arranged at the top of the screen plate. Preferably, the top of interior baffle has seted up logical groove, fixed mounting has the copper cover on the inner wall of logical groove, fixed mounting has the heating wire that is arranged in the copper cover inner chamber on the inner wall of logical groove, fixedly connected with heat transfer wing on the outer wall of copper cover. Preferably, the liquid stirring mechanism comprises a supporting f