Wastewater Treatment in Brewery Industry

The effluents of brewery requires treatment so that they can be used for the purpose of irrigation. The amount of wastewater produced by the brewery depends lot on the consumption of water during the process. There are various organic components present in the brewery effluent. The popular organic components present in the brewery effluents are sugars, soluble starch, volatile fatty acids, ethanol etc. These biodegradable organic materials also consist of various solids like spent grains, waste yeasts, hot trub etc. The types of chemicals used determine the pH level of the effluent.

 

For choosing wastewater treatment plant or equipment, different factors like socio-economic factors, environment factors should be considered. The process selected should be flexible enough to deal with large fluctuations in organic load and the nature of wastewater.

 

The organic effluent in the brewery industry is high hence for aeration high input energy is required also sludge disposal also needs proper handling. Due to this anaerobic processes are preferred for wastewater treatment in brewery industry as this not only saves energy but also minimizes sludge disposal costs. Also in such cases effluent treatment plant is used.

 

Brewery WasteWater Treatment Processes
The Brewery waste water treatment process two significant steps- Biomethanation and Aeration. The two methods uses low energy requirement, generates less sludge and have advantage of easy start up and operation.

 

Brewery wastewater poses a problem of fluctuating loads hence the treatment process should be designed to address such fluctuations without affecting the output parameters of the wastewater treatment system.

 

In biomethanation process reactor, called Biodigester is usually used for converting organic matter into useful energy in the form of Biogas. The whole biological process of conversion takes place in a controlled atmosphere and temperature which results in effective conversion and generates good amount of biogas.

 

Aeration system receives the wastewater from the biomethanated wastewater from the biomethanation plant. The plant also receives the brewery wastewater from other sources like condensate water and floor washings. The brewery wastewater in aeration system undergoes two types of treatment-Conventional Activated Sludge System followed by Extended Aeration System. The discharged wastewater can be further treated and recycled by employing activated charcoal and chlorination techniques. Reverse osmosis methods can also be employed for recovering and recycling water.

Tags:- Brewery Wastewater Treatment Process, Water Treatment Plant For Brewery Industry

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