Water&Wastewater_TL_2.23.17

Landfill Leachate

Available from Dynatec Systems Inc

Dynatec successfully uses UF, MBR, and RO for landfill applications.
Dynatec can provide the MBR (membrane bio-reactor) option, which is an aerated biological mixed liquor process operating at very high solids concentrations. Some of the advantages are:

•Very long sludge age produces a well acclimated biomass, which because of the high concentration (typically 12,000 to 20,000 mg/l), provides very high rates of reaction.
•Excellent nitrification and de-nitrification.
•Smaller footprint then conventional aerated systems.
•Very high quality effluent due to the use of membranes for final clarification.
•Lower sludge production than conventional systems.

An alternative method, which will generally apply for smaller flows, is to treat using reverse osmosis, which removes organic and inorganic contaminants, as well as color. Various configurations of this type of membrane are available, which can accommodate various levels of suspended solids. Where high solids (>500 mg/l) are present, consideration may be given to the use of tubular RO membranes. Where solids are at more moderate concentrations (50mg/l – 250 mg/l), a narrow channel configuration can be considered. Finally, where solids levels are very low (<5 mg/l), conventional spiral-wound reverse osmosis membranes can be considered.




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