The high cost of treated water makes most people in the rural communities resort to readily available water sources which are normally of low quality exposing them waterborne diseases. Water treatment facilities are designed to speed up the natural process of purifying water. With billons of people and even more wastewater, the natural process is overloaded. Without wastewater treatment, the amount of wastewater would cause devastation, as it still does today in developing countries. Globally, over 80 percent of all wastewater is discharged without in the countries that do have water treatment facilities, they use various methods to treat water with one common goal. During this study, sewage water sample were collected for treatment of moringa oleifera seed in powdered form. Moringa oleifera seed can be used as a natural coagulant. It is natural clarification agent for highly turbid and untreated pathogenic water. Various doses of moringa seed powder such as 50mg/ml, 100mg/ml, and 150 mg/ml were taken to check the efficiency doses of sewage water. After treatment with seed powder the sewage water were analyzed with various physical parameter like PH, turbidity, TDS, TSS, TS. PH was decreased at 50 and 100 dose, but it was increased at 150 dose.( 7-7.5). Turbidity decreased with increased dose 50, 100, and 150. The TDS, TSS and TS are after treatment were reduced. After that three methods are carried out for comparison with natural coagulant Moringa oleifera. In physical method, the colony count was measured by colony forming unit. After this treatment, the number of bacterial colonies were reduced with increased dose of Moringa seed powder. In chemical method, the natural coagulant are compared with chemical coagulant like alum, charcoal and sodium chloride. After this comparison result show that chemical coagulant are more effective but the excess use of chemical coagulant are harmful to health. In biological method, the natural coagulant are compared with nonpathogenic miocrobes like E.coli, S.aureous, and Pseudomonas. After that BOD and COD were measured with respect to water samples. The calculated BOD value was greater than that of standard disposal value of sample require further treatment. And the COD is highly effective. COD removal efficiency was linearly increased up to the maximum dosage of Moringa oleifera seed powder used in various forms such as, 50mg/ml, 100mg/ml, and 150mg/ml. Application of this low cost Moringa oleifera is recommended for eco-friendly, nontoxic, simplified water treatment where rural and peri-urban people living in extreme poverty are presently drinking highly and microbiologically contaminated water.
Pawar et al. (Wed,) studied this question.