Rainwater and pollutant split-flow processing method and system for refuse landfill

Abstract

The invention discloses a rainwater and pollutant split-flow processing method and system for a refuse landfill. The processing system comprises an underground water guiding and drainage system and a landfill leachate guiding and discharging system. A field region is divided into a plurality of landfill work zones according to elevations. The underground water guiding and drainage system and the landfill leachate guiding and discharging system are completely paved on the landfill operation regions which have been operating, temporary embankments are arranged on the junctions of the landfill operation regions which have been operating and the landfill operation regions which have not operated yet, and vertical water guiding facilities are arranged on the sides, close to the landfill operation regions which have not operated yet, of the temporary embankments. The processing method includes the steps that landfill work is carried out from landfill work zones with smaller elevations to the landfill work zones with larger elevations in sequence; the underground water guiding and drainage system is paved according to the landfill work sequence, and then the landfill leachate guiding and discharging system is constructed according to the landfill work sequence; the temporary embankments and the vertical water guiding facilities are arranged so that rainwater collected in the landfill operation regions which have not operated yet can be directly guided to the underground water guiding and drainage system. The rainwater and pollutant split-flow processing system is simple in structure, convenient to construct, controllable in cost and capable of effectively achieving rainwater and pollutant split-flow in the refuse landfill.

Description

technical field [0001] The invention belongs to the technical field of urban domestic waste landfill treatment and disposal, and in particular relates to a treatment method and a treatment system for diverting rain and sewage to a waste landfill. Background technique [0002] With the rapid development of society and economy and the continuous improvement of people's living standards, the output of domestic waste is increasing. According to incomplete statistics, due to the lack of timely and proper disposal, the stockpile of urban domestic waste in my country has reached more than 6 billion tons over the years. , occupying more than 500 million square meters of land, causing more than 200 cities across the country to be surrounded by garbage. Within three years from 2009, more than 1,000 domestic waste disposal landfills have been built nationwide. [0003] During the use of the landfill, the rainwater infiltrated into the garbage heap and the liquid produced by the decompo...

AI Technical Summary

Problems solved by technology

The "Standards for Pollution Control of Domestic Waste Landfill Sites" (GB16889-2008) implemented on July 1, 2008 put forward higher requirements for leachate treatment, and at the same time, the operating costs of domestic waste landfill sites also increased

Although these methods can collect and drain part of the rainwater and the water flow from the surrounding mountains into the landfill area, they cannot effectively control the leachate from the source, and more water still directly enters the landfill, increasing the amount of leachate. Processing capacity and operating costs; and the coverage method is not easy to operate, and the cost is high

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