The "Bio Impact" anaerobic treatment system installed for another company (source: Sumitomo Heavy Industries Environment)
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Sumitomo Heavy Industries Environment Co Ltd announced Jan 18, 2018, that it has received an order for a biogas-power-generation-type anaerobic wastewater treatment system from Nakatafoods Co Ltd (Tanabe City, Wakayama Prefecture), which deals with products made from Japanese apricots.

Sumitomo Heavy Industries Environment (Shinagawa-ku, Tokyo), which is a wholly-owned subsidiary of Sumitomo Heavy Industries Ltd, will set up the "Bio Impact" anaerobic treatment system at Nakatafoods Bio Gas Power Plant to be built in Kamitonda-cho (town), Wakayama Prefecture. The system will purify waste liquid that Nakatafoods and other local companies used for seasoning Japanese apricots. And the system generates electricity by using the bio gas generated in the treatment process.

Waste liquid used for seasoning Japanese apricots contains a large amount of sugar and is reportedly not suited for anaerobic treatment. But this problem was solved by using Sumitomo Heavy Industries Environment's own technologies, the company said.

There are many small and medium-sized businesses in the Japanese apricot processing industry. And the high cost of treating seasoning liquid has been a major problem.

The bio gas power generation system has a high efficiency because of its centralized processing and a lower cost, compared with activated sludge. Also, it generates methane gas, which enables to sell generated electricity based on the feed-in tariff (FIT) scheme, increasing economic advantage. So, it is expected to drastically reduce the cost of treating seasoning liquid.

Sumitomo Heavy Industries Environment is responsible for the engineering, construction and trial operation of the system while Miyaso Chemical (Tanabe City, Wakayama Prefecture) will be responsible for management and operation after the installation of the system. The project was actively supported by Wakayama Prefecture and Kamitonda-cho.

So far, Sumitomo Heavy Industries Environment has delivered many anaerobic treatment systems for treating wastewater from food, chemical and pulp and paper factories and to public facilities. It plans to promote private-public initiatives for industries and regions that are concerned about similar problems related to, for example, local products.