During landfill site operation, a liquid known as leachate is produce. It is a mixture of organic degradation products, liquid waste and rain water. It has a high organic carbon content, high concentrations of nitrogen and usually slightly acidic.
The unscientific discharge of landfill leachate can lead to serious environmental problems, since the leachate contains a large amount of organic matter(both biodegradable and non-biodegradable carbon), ammonia-nitrogen, heavy metals, chlorinated organic and inorganic salts.
The leachate should be treated before it is discharged due to the risk posed by its high organic contaminant concentrations, high concentration of ammonia as well as pathogenic microorganisms that might be present in it.
As per Municipal Solid Wastes (Management & Handling) Rules, 2000 of The Environment (Protection) Act, 1986:
The purification of landfill leachate with membrane technology helps to avoid further contamination of resources such as groundwater and surface water.
Beside the ecological aspect of minimizing the burden on the environment, the economical feasibility also has to be taken into consideration. In this regard membrane filtration has proven to be a justifiable and economical solution in most cases as compared to the overall costs incurred by other processes of landfill leachate treatment.
|Parameters||Unit||Input To RO
|Chemical Oxygen Demand||PPM||30800||160|
|Biochemical Oxygen Demand||PPM||12434||28|
|Total Dissolved Solids||PPM||19829||343|
|Iron As Fe||PPM||75||< 0.05|
|Lead As Pb||PPM||0.053||< 0.05|
|Chromium As Cr||PPM||0.27||< 0.04|
|Nitrate As No3||PPM||< 2||< 2|
|Phosphorous As P||PPM||< 2||< 2|
|1||Place||--||Tier 1 City in Maharashtra|
|3||Clean water generated||m3||28600|
|4||Total years of project||---||4 YEARS|
|5||Scope of Work||100m3/Day||Execution & Operation|