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Pandian A.,VA Technology WABAG Ltd
International Journal of Pharma and Bio Sciences | Year: 2015

This study is considered for enhancing the production of biogas and bioelectricity produced from sludge in Sewage water treatment plant -Chennai. The sewage water collected from 44areas in Chennai under the pipe lines of pump. Then the treatment of pretreatment, primary and secondary treatments are taking place for purifying the contaminated water. This treatment are used to reduce the organic loading, total suspended solids and grease, in secondary treatment the sludge thickened is formed. The sludge thickened are pumped to the digester by the way of top, middle and bottom of the pipe lines, continuously the sludge mixed well, Alternatively the digester maintains at ideal condition and flow of mixing conditions .In this stage we are adding the enzyme in the digester.Our Bio-Enzyme is having Trehalose it is specialized carbohydrate for developing growth factor Arechea bacteria which is sole responsible in the formation of Methane gas. Three processes are involved in this gas formation - Hydrolysis, acidogenesis and methanogenesis.,DDuring the process of methanongesis the methane gas (CH4)is formed. During that process the enzyme react with methanongesis process and enhancing the methane gas production. All the biogases collected and passed through the pipe line to the Gasholder. After that the gases passed through the scrubbing system for removal of H2S (Hydrogen sulphide gas). The volume of H2S measured it should be less 10%, and then the gas passed to the gas engine, the gas engine convert the gas energy to electrical energy.


Lahnsteiner J.,VA Technology WABAG GmbH | Andrade P.,VA Technology WABAG Ltd | Mittal R.D.,VA Technology WABAG Ltd
Water Practice and Technology | Year: 2012

The Indian Oil Corporation Ltd. Panipat had to build two water reclamation plants as a response to the demands of the environmental authorities. The plants, which treat secondary refinery and various refinery/petrochemical process effluents, were commissioned in 2006 and 2010 respectively. Advanced multi-barrier systems (including ultrafiltration and reverse osmosis) have been employed in order to meet the stringent quality requirements for the recycling of boiler make-up water. Excellent results with regard to the removal of the major parameters such as total dissolved solids (TDS) and silica have been accomplished, e.g. silica is mainly removed by RO (from 11.6 mg/L in the UF outlet to 0.09 mg/L in the RO permeate (99.2% removal)) and is then reduced further to 0.007 mg/L (7 μg/L; total removal 99.94%) in the mixed bed ion exchanger (20 μg/L is the specified limit for boiler make-up water in various power plant guidelines). Both UF process units have shown relatively good performance. The older UF has been in operation for more than five years with still acceptable permeability values and a relatively low number of fibre breakages. © IWA Publishing 2012.


Lahnsteiner J.,VA Technology WABAG GmbH | Andrade P.,VA Technology WABAG Ltd. | Mittal R.,VA Technology WABAG Ltd.
Water Practice and Technology | Year: 2015

In response to environmental stipulations and limited fresh water resources, the Indian Oil Corporation Ltd. Panipat and Essar Oil Ltd. Vadinar had to build water reclamation plants. The plants, which mainly treat refinery effluents, were commissioned in 2006 and 2012, respectively. Advanced multi-barrier systems (including Ultrafiltraion (UF) and Reverse Osmosis (RO)) were employed in order to meet the stringent quality requirements for the recycling of boiler make-up and good results with regard to all the requested standards have been achieved. The Panipat UF membranes have a lifetime of 6 years and rather than integrity, which remains quite good (fibre breakages ,0.1‰/year), the main reason for replacement is relatively low permeability (50-60 L/m2*h*bar). The operating cost (including membrane replacement) has been calculated as 0.37 EUR/m3 of recycled boiler make-up. © IWA Publishing 2015.

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