Abstract: In this article, treatment of dairy wastewater using PVA Hydro-Gel as a Moving Bed Bio-Mass Carrier has been discussed. Dairy industries have shown tremendous growth in size and number in most countries of the world. These industries discharge wastewater which is characterized by high C.O.D, B.O.D, nutrients, and organic and inorganic contents. Such wastewaters, if discharged without proper treatment, it will affect Environment as well as Human-Health[2]. The objective of the research was to evaluate the performance of a laboratory-scale biological treatment unit for dairy-industry Wastewater by using PVA-Gel. Pre-treatment was the first phase of PVA-Gel Treatment Unit. The aim of pre-treatment process was to let the biomass present in wastewater get attached on gel and grow inside gel. Pre-treatment was given to gel for 30 days. Second Phase of Treatment unit was Bio-Reactor. A Bio-Reactor was fabricated using Fiber glass with height 25cm, width 15cm and length 30cm & capacity 11 liters. One Liter Pre-treated Gel and 10 liter wastewater from primary clarifier was introduced in the Bio-Reactor. They were properly mixed and aerated using diffuser. Batch Process was adopted for treatment and the Batch samples taken for analysis had retention time of 8, 10, 12 hrs. The BOD & COD Level Reduction of samples having Retention Time 8, 10, & 12 hrs, a decline was observed for BOD from 1200mg/lit to 325, 150, & 75 mg/lit & for COD from 1700mg/lit to 500, 326, & 78 mg/lit. Reduction in biological treatment time with low Sludge volume production was observed.
Keywords: Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), Moveing Bed Bio-Film Reactor (MBBR), Poly-Vinyl Alcohol (PVA).
Title: Treatment of Dairy Wastewater using PVA Hydro-Gel
Author: Pawan G. Ramteke, Omkar P. Gurav, Karan N. Khirade
International Journal of Engineering Research and Reviews
ISSN 2348-697X (Online)
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