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Dairies’ production activities result to significant quantities of wastewater and waste by-products with high organic content that requires reduction before discharge.
The waste (water) streams from the production of (bio) ethanol or ethanol spirits are generally very suitable for anaerobic treatment, due to their organic compounds.
The effluent streams produced by the different production processes are influences by a great number of parameters such as, process design, milling process, type of raw material, etc. This requires special attention in the design of the treatment plant for this type of industry.
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The pulp and paper industry generates large volumes of highly heterogeneous waste waters containing compounds from wood or other raw materials, process chemicals and compounds formed during processing.
In addition to the food industry, biological anaerobic and aerobic technologies can be applied in the chemical and pharmaceutical industry as well.
A wide variety of sludge, including municipal sewage sludge, are treated in anaerobic digesters.
The brewing process generally generates unique, high-strength waste water as a by-product. The waste water typically has a high concentration of Biological Oxygen Demand (BOD) form the carbohydrates and protein used in brewing beer. Brewery waste water usually has a temperature of > 25 °C.
Due to the diversity of products in the beverage industry, there is also a great variation in waste water composition (flow and load) from this type of industry. This requires special attention and tailor made solutions for the design of a waste water plant for this industry.
The first UASB pilot plant was installed in the 1970’s at a beet sugar company in The Netherlands (CSM suiker). Thereafter, a large number of full scale plants were installed throughout The Netherlands at sugar refineries, potato starch processing plants, and other food industries, as well as paper recycling plants.