Water Journal : Water Journal November 2015
WATER NOVEMBER 2015 88 Water Business On an annual basis when the plant reaches full capacity, the reclaimed water capacity is equivalent to more than 250 Olympic swimming pools lled with high-quality water for reuse. This resource reduces the drain on community water supplies and provides an immediately accessible, predictable and reliable resource for the company involved, says Ian Page, Vice President of Global Water and Energy (GW&E), GWE's technology supplier in the US and Canada. Harnessing both anaerobic and aerobic treatment technologies, the California plant transforms the wastewater into water clean enough for a variety of potential non-potable uses. "The result, which has been successfully achieved in numerous applications of GWE technology, is equivalent to an improvement of more than 99 per cent in the quality of water produced for recycling," says Mr Page. In the process of breaking down and transforming wastewater nutrients, the plant can produce up to 8330 Nm3 of biogas (methane), equivalent to 5800kg a day of fuel oil. This represents a production capacity of more than 2000 tons of fuel oil a year, worth tens of millions of dollars over the life of the plant. "Such savings go straight to the bottom line in pro t in perpetuity," says Mr Page. "Not only can wineries produce such savings, but so also can any food, beverage or other business with a biological waste stream. This represents a huge diversity of industry globally, with the technology being particularly effective for industries such as red meat, poultry, sh, dairy, brewery, canning, paper and packaging, food processing and agribusiness processing including many of the world's most important crops, including fruit, cane, grain, maize, yams, sorghum, potatoes, beans and cassava." GWE Process technology involved in the California winery project included SUPERSEPTM solids removal, heating and heat recovery, in-line pH control, ANUBIXTM-T (EGSB) anaerobic treatment, a high temperature biogas are, odor control, aerobic MBR (membrane bioreactor), BIOSULFURIXTM biogas scrubber, GASODRIXTM biogas drying and activated carbon lters. Nearly 400 wastewater treatment and waste-to-energy plants using Global Water Engineering technology are in service throughout the world. The latest GWE technologies, including GWE's RAPTORTM treatment system for organic residues, won GWE a major international chemical engineering award from the Institute of Chemical Engineers (IChemE), which represents more than 40,000 chemical engineers worldwide. This latest 2014 Energy Award involved a world rst with Chok Chai Starch in Thailand, where a GWE RAPTORTM system is used to convert wet pulp waste product from the processing of cassava roots into biogas. Scores of plants using GWE technology also produce green energy to power boilers and electricity generators. Further treatment steps for recycling of water after anaerobic processing can also result in up to 75 per cent of the treated water being available for re-use. Depending on the scale of the anaerobic plant employed, the green energy generated can repay the cost of the anaerobic plant within as little as two years -- and go on generating pro t virtually in perpetuity. GWE Chairman and CEO Mr Jean Pierre Ombregt says advanced anaerobic technology is strongly applicable to any factory or process with one or more digestible solid waste streams. "Green energy alternatives such as wind power and solar power get most of the headlines for their achievements, but anaerobic processes are even more suited to industry in many instances, given that it provides reliable base load power and simultaneously treats wastewater to high discharge standards. "Biogas from wastewater is an outstanding source of base load power. As part of a renewable energy mix -- complementing wind and solar generation, for example -- electricity generated with biogas is highly reliable and consistent. As the major component of natural gas, methane is an environmentally attractive alternative to fossil fuels." For further information please go to: www.cstwastewater.com DELIVERING PUMPING SOLUTIONS Call us today to discuss your applications requirements. www.brownbros.com.au Ph: 1300 4 BBENG HYDROVAR®, the modern variable speed pump drive is taking pumping to a new level of flexibility and efficiency.
Water Journal September 2015
Current Feb 2016