Integral treatment process for rural garbage seeping liquid

Abstract

The invention discloses an integral treatment process for rural garbage seeping liquid; aiming at the characteristics of rural garbage seeping liquid and based on the long-term engineering practice, the following treatment process is provided: the process comprises a high-level physical-chemical technology, a denitrification / nitration technology, an external MBR (meane biological reactor) membrane technology, biozeolite and a nanofiltration / reverse osmosis system, has higher impact resistance load and can adapt to characteristics of rural garbage infiltration of different areas and different landfill ages. The integral treatment process has stable treatment effect; treated water can reach the standard of emission limits specified in Standard for Pollution Control on the Landfill Site of Municipal Solid Waste (GB16889-2008). The integral treatment process reduces the usage of chemical agents, has low investment and operating cost and high treatment efficiency and is easily popularized and used in rural areas.

Description

Technical field [0001] The invention relates to a treatment process for rural landfill leachate, in particular to an integrated treatment process for landfill leachate suitable for rural areas. Background technique [0002] With the improvement of people’s living standards, material civilization in both cities and rural areas is greatly enriched, and garbage pollution is becoming more and more serious. Most cities in China have established landfills, and rural areas occupy about 64% of the country’s population. The environmental problems caused by garbage pollution cannot be ignored. As the country attaches importance to the rural environment, centralized or scattered landfills will also be located in rural areas, and the resulting landfill leachate is landfill. The main secondary pollutants inevitably produced during the burial process have complex water quality components, many influencing factors, strong variability, and difficult treatment. Moreover, due to the lack of rural...

AI Technical Summary

Problems solved by technology

[0011] 2) It is highly toxic and contains a large amount of antibiotics. If this water is directly subjected to biological treatment, it can kill the active microbial bacteria in the water, making the biochemical reaction impossible to complete;

[0012] 3) The concentration of nitrogen and phosphorus in the infiltration of waste in the rural landfill at the initial stage of landfill is higher than that in the city, and it also changes continuously with the extension of the landfill's service life. The biodegradability is getting worse and the ammonia nitrogen content is getting worse. High trend, difficult to deal with;

[0013] 4) High metal content and high salt content

[0014] 5) Affected by precipitation and surface runoff, the water quantity and quality change greatly;

[0016] 7) The amount of landfill leachate produced by village-level landfills is small, which aggravates the imbalance of nutrient ratio in the process of biochemical treatment;

[0017] 8) Leachate will produce a lot of foam during biochemical treatment, which is not conducive to the normal operation of the system

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