Abstract

Champa Devi site of Ramgarh Lake is being polluted day by day due to heavy sewage discharge of colonies situated at the catchment of this lake. Its water used in drinking purpuses by the cattles and in ground water recharging. Therefore, an attempt has been made to treat sewage water with a low cost biotreatment method and assess the bioremediation by determining the WQI of biotreated sewage water. The WQI is helpful in quick assessment of bioremediation and biomonitoring of biotreated sewage water. The sewage water after biotreatment undergo bioremediation process so the WQI gradually tending towards its betterment with the increase in biotreatment period. This is due to the uptake of pollutants by the flora (Eichorrnia sp.). Toxicants present in the sewage water hits the AChE activity in the nervous tissues of L. acuminata due to which the enzyme activity reduces upto 8.28%. After biotreatment of sewage water there was gradual down in pollution load hence gradual

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