TPi January 2012

Teijin donates wastewater system for disaster-hit NE Japan Teijin Limited has donated a compact, efficient and energy- saving municipal sewage processing system, based on the company’s multi-stage activated biological process (MSABP) technology, to the city of Kesennuma, Miyagi Prefecture, as a temporary replacement for the sewage treatment system devastated by the March 2011 earthquake and tsunami. This is the first time that Teijin’s MSABP wastewater treatment technology has been adopted for sewage treatment. In the course of on-going efforts by the Japan Sewage Works Agency (JS), a special public organisation funded by local governments, to support the recovery of sewage-treatment facilities in the earthquake-hit areas, Teijin’s MSABP-based system was selected because of several advantages: the entire system fits within a 40ft container for easy transportation; start-up simply requires that tubing and wiring be connected on-site; efficient processing capacity handles up to 75 tons of sewage per day; and remaining sludge is limited, resulting in low maintenance and energy savings. In February 2011, Teijin and JS completed a pilot project to verify the effectiveness of the system at JS’s Research & Technology Development Experimental Center in Mooka, Tochigi Prefecture. Teijin now looks forward to the system proving its effectiveness on a practical basis, in support of the disaster-struck area’s overall recovery. The MSABP system uses special biological carriers packed with high concentrations of microorganisms in multistage aeration tanks. The microorganisms vary from tank to tank to form a food chain that decomposes even highly concentrated and persistent effluent. The system suppresses the generation of excess sludge, eliminating the need for sludge disposal and resulting in a low-maintenance solution that reduces energy consumption. The system currently is being used for wastewater treatment in chemical, dyeing and food manufacturing plants in Indonesia and China. It has also been selected for wastewater treatment by a textile factory in Angola.

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Japan is slowly rebuilding after the earthquake

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January 2012 Tube Products International