With the backflow of the treated concentrate, the concentration of the raw water of the landfill leachate is continuously increasing. Part of the concentrated liquid has exceeded the inflow limit of the secondary reverse osmosis treatment device, resulting in the treated CODcr and ammonia nitrogen and other indicators higher than the CODcr ≤ 100mg stipulated in the "Landfill Pollution Control Standard for Domestic Waste" (GB16889-2008) /L, ammonia nitrogen≤25mg/L emission standard.

In response to the market demand for this type of concentrated liquid, EboomYa has developed a three-stage RO reverse osmosis device through process improvement and system integration to achieve discharge standards. This process improvement investment is small, and the integrated system has a strong self-balancing adjustment ability, which provides facilities for the subsequent leachate treatment to meet the discharge standard.

After the use of the Qiganshi municipal solid waste landfill in Jiangmen City, Guangdong Province, the on-site inspection data is verified: the water quality data discharged by the secondary reverse osmosis treatment device is CODcr≤157.9mg/L, ammonia nitrogen≤84.2mg/L; installation of tertiary RO After the reverse osmosis device is processed, the quality of the produced water is lower than the national standard after repeated detections, and the on-site online monitoring device detects that the discharge meets the standard. The user's response is good.