A Comparative Study on Treatment of Domestic Kitchen Wastewater by Using Vermiculture Technology

A Comparative Study on Treatment of Domestic Kitchen Wastewater by Using Vermiculture Technology

S.Ponnumani^1*, D.Krishna^2*

¹PG Scholar, Erode Sengunthar Engineering College, Perundurai, Tamilnadu, India

²Assistant Professor, Department of Civil Engineering, Erode Sengunthar Engineering College, Perundurai, Tamilnadu, India

Abstract

The vermifiltration is a low-cost, sustainable technology has been applied to treat Domestic Kitchen wastewater using earthworms (Eisenia Foetida). The earthworm with microorganisms is responsible for the treatment of Domestic Kitchen wastewater as it passes through the gut and intestine of earthworms. A vermifilter (VF) was set up using Gravel, Sand and Garden soil as filter media.VF was inoculated with Earthworm Eisenia foetida at 5,000 worms. The Average  percentage removal of Physical and Chemical Parameters (pH ,Turbidity ,Biochemical Oxygen Demand (BOD) , Chemical Oxygen Demand (COD), Total Solids (TS),Total Dissolved Solids (TDS) ,Total Suspended Solids (TSS),Alkalinity,Hardness,Chlorides) of Untreated and Treated  Domestic Kitchen waste water is given in Table 4.1 & 4.2 and Shown in Fig.4.9. The total cost for this project is Rs.3050 %.The Treated Nutrient Valued water is discharged to Gardening and Agricultural purpose and collected vermicompost used as fertilizer. Vermifiltration is an economically feasible, sustainable to environment and socially acceptable technology giving monstrous benefits.

Keywords - Earthworms; Domestic wastewater treatment; pH; Turbidity; Total Solids;BOD; COD; Alkalinity; Hardness; Chlorides ; Vermifilter.