Discussion on the remediation plan of urban stock garbage landfill

At this stage, China's urbanization process is accelerating. With the increase of population and economic volume, many urban development problems will arise immediately. Urban domestic waste treatment and transportation is one of them. The main performance is: the annual increase of garbage production The accumulation of urban stocks of waste is becoming more and more polluting; the garbage disposal is not in place to cause secondary pollution; the amount of urban domestic waste continues to grow, and new waste treatment facilities will invade more land; waste disposal will increase construction investment and operating costs. At present, the treatment methods for municipal solid waste mainly use landfill, incineration and high-temperature composting. Compared with incineration and composting, landfill has the advantages of simple technology, low investment, fast processing and disposal of various types of garbage. After the closure of the field, the advantages of using land can be restored. In a certain period of time, new landfills in various places have played an active role in curbing environmental pollution. As a developing country, landfill will continue to be the main technology for urban waste disposal in China for a long period of time.

Landfill Problems and Analysis Landfills have established barriers to prevent garbage from polluting the environment, but it is not foolproof. Many people lack the right understanding and often mistakenly believe that as long as the garbage enters the landfill, it will be done once and for all. After combing, there are mainly the following problems in landfills in China:

1 There are a large number of informal landfills that do not meet the environmental protection measures. There are bound to be garbage dumps in every city in China. Among them, the landfills are freely landfilled, and the informal landfills without any measures take a certain proportion. In the late 1990s, landfills began to be widely promoted and put into operation in China, and the industry construction and management norms were becoming more and more complete. Before this period, the landfills built in China were basically all informal without environmental protection norms. Fill Buried.

2 Part of the landfill site is located in the urban area or near-effect area, occupying land resources. Landfills occupy urban land and affect the development of land resources. Failure to timely and effectively deal with them will not only waste a lot of land resources, but also pollute the urban landscape and restrict the development and construction of surrounding land parcels.

3 Unconstructed closure of landfills will cause difficult pollution in the environment. After the landfill is closed or stopped, due to lack of necessary maintenance, it is impossible to standardize the closure, the garbage is directly exposed to the air, or just the simple cover, the continuously generated landfill gas and leachate on the soil, water, The air continues to produce pollution.

4 The garbage is not effectively covered. In the external process, the organic matter is decomposed under anaerobic conditions, causing harmful gases that are highly polluted by the environment, such as methane, carbon dioxide, hydrogen sulfide, etc., when the concentration of methane gas is 5% to 15%. When it is very easy to explode.

With the increasing emphasis on environmental protection issues in China, and the filling of garbage is obviously unable to adapt to the development of the times, how do we deal with domestic garbage in the city? The China Transport Group's Sanitary Garbage Truck is a good choice. It is able to regularly transport the domestic garbage generated in the city to the garbage collection station for centralized sorting. Degrading them into a secondary energy source that can be reused is environmentally friendly and can achieve considerable economic benefits. At present, this is the most scientific and effective way to deal with urban stock waste! !