Leachate Treatment with M.B.R. followed by R.O.

Description:

The state-of-the-art method of treating leachate from landfills is a combination of the most innovative representatives of biological and physicochemical treatment:

The leachate is hydraulically equalized and homogenized in a equalization tank of sufficient volume, and then is fed to the biological stage. The mixed liquid is separated with the use of ultrafiltration membranes producing a clarified liquid and a concentrated biomass, part of which is recirculated to the bioreactor and the another (smaller) part is removed as waste sludge. The above separation is usually performed by UF membranes, which are installed in a pressure vessel, outside the biological tank.

The whole ultrafiltration membrane equipment of the MBR system is installed in a container near the bioreactors. The filtrate of ultrafiltration membranes (outflow MBR) feeds the reverse osmosis through a small intermediate tank and a feed pump. Similarly, the entire reverse osmosis equipment is installed in a second container.