The paper presents the importance and the necessity the efficiency of cleaning process of the domestic waste water. Attached biofilm reactors provide the means for implementing energy efficient anaerobic waste water treatment at full scale. Progress has been made in the development for fixed expanded and fluidized bed anaerobic process by addressing fundamental reactor design issues. The performance of aerobic submerged packed bed reactor was studied for the treatment of domestic waste water using different kinds of packing material with specific area. A reactor in which the filled inert packing material for the growth of biomass is kept packed is called as PBR. The flow of wastewater through the reactor may be upward or downward. The packing material commonly used as slag, rock or ceramic. In the present study, the treatment of domestic wastewater by using packed bed reactor with packing material of PVC flexible pipe is analysed. Keywords: Alkalinity, Hardness, BOD, COD, Packed bed reactor, PVC flexible pipes. I. INTRODUCTIONWaste water is any type of water that has been affected by human use. Waste water is used water from any combination of domestic, industrial, commercial or agriculture activities, surface run off or storm water and any sewer inflow or sewer infiltration. Waste water is discharged to the environment without suitable treatment cause water pollution. The composition of wastewater varies widely that are Chemical or physical pollutant, Biological pollutants and Quality indicators. The aerobic submerged packed bed reactor is made with a specific area of 760-1,200 m2/m3. When operated down flow in a continuous regime, have high degradation rates and allow obtaining of reclaimed water for reuse in public services. The determined specific COD removal rates were very similar in all reactors when they were operated at low organic load [1]. Packed bed is very widely studied contact equipment for wastewater treatment. The studies are reported on effect of parameter like flow rate, contact time, bed height, initial concentration and PH on the break through curve with initial concentration and flow rate, the break through time decreases and it increase with bed height [2]. Microorganism immobilize on a support media is the principle of anaerobic fixed film fixed bed reactors. Its increased capacity of microorganism retention on the support media can cause the hydraulic retention time reduced considerably. There for these types of reactor are widely and easily applied for the various wastewater treatments. The experiments were performed at hydraulic retention times of 1, 2 and 3 d based on empty reactor volume and the performance of the reactor was evaluated based on the removal of organic matter COD, SS, PH Changes and biogas production. The average COD and SS removal efficiencies for Domestic wastewater were 63. 87, 70.85, 75.92 % and 75.24, 84.55, 94.25 % respectively. PH changes from 7.2 to 4.2. Biogas was produced 0.50 to 0.59 l/d. on same HRT. The relationship between the organic removal ra...
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