Treatment Of Greywater By Using Low Cost And Easily Available Materials Like Soil, Crop Waste And Coal In Constructed Wetland

摘要

In the present investigation, various combinations of materials as the bed in constructed wetland were studied by treatment of synthetic greywater. Materials studied in constructed wetland were, like soil (red, black, sandy), fibre waste (carpentering waste, crop waste, herb), adsorbent materials (low-grade coal, flyash). Combinations of various materials as bed gave results for COD removal (60-90%), BOD removal (60-84%), PO_4~3 removal (40-67%) and biodegradability index which was shown to be raised (0.50-0.90). Better results were obtained by taking the combination of red soil, coarse low-grade coal, carpentering waste as it gives maximum removal of COD (95%), BOD_5(92%), PO_4~3 (66%) and increases in biodegradability index (0.96). The present study can help to design low-cost portable constructed wetland by using easily available material to treat real greywater.