Optimization Study On Treatment Of Landfill Leachate By Dtro+Roll Ro Process

Along with the development of the city, municipal waste disposal has become a difficult problem with the development of the city. The landfill technology has become a main method of dealing with waste. The landfill will produce landfill leachate, landfill leachate as a kind of pollutants concentration high, complicated composition of sewage, if it direct emission, it will pollute the surrounding environment and people’s safe. Until now landfill leachate treatment becomes a difficult problem in the field of waste water treatment. Landfill leachate treatment cost high, the process is complex, compared with the municipal sewage, the emission standard is difficult.Based on the analysis of the landfill leachate site, ChuZhou in this article, the technological process using DTRO (dis-tube reverse osmosis)+volume type reverse osmosis, and as the main processing equipment of the process (DTRO) made a detailed description, it include the composition of reverse osmosis membrane, the principle and characteristics of reverse osmosis membrane, and it’s important equipment.In the project operation stage due to the landfill leachate directly into the disc tube reverse osmosis system without pretreatment, so the dis-tube reverse osmosis membrane is more vulnerable to various pollutants in wastewater. This article was introduced the pollution in the principle of reverse osmosis membrane, the kinds of pollutants, and all kinds of cleaning methods of membrane and the order in working, to ensure the efficiency of the membrane.We are check some important indicators for monitoring such as CODcr, SS, conductivity, NH4+-N,analysis the ability of the dis-tube reverse osmosis system to remove contaminants, volume type RO system’s ability to remove contaminants and combination system’s ability to remove contaminants and the contribution rate, contaminant removal rely mainly on dis-tube reverse osmosis system. The DTRO system remove the CODcr in landfill leachate on the contribution rate is96.97%, the removal of the SS on the contribution rate of95.58%, the removal of the conductivity on contribution rate was95.62%, the removal of the NH4+-N on contribution rate was89.76%. Most of time the out of water up to standard, but there are a few time the NH4+-N was slightly overweight. It need to adding the ammonia nitrogen removal agent to make the water up to standard. Based on the relevant material, I think like this kind of high concentration organic wastewater, although the efficiency of the DTRO technology is very high, but only use primary DTRO technology as the main pollutants removal technology is not very reliable. On the basis of access to relevant information, the technological process use the MBR process as DTRO pretreatment process, and in the aspect of theory, the economic operation carries on the analysis of its feasibility. To ensure the out of the water up to emission and it’s cost low. For after landfill leachate projects adopt DTRO technology has a certain reference significance.