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March 5, 2020 JS Registers Three New Technologies on its Innovation Program Two new aeration control technologies and a downsized belt press dehydrator

Japan Sewage Works Agency (JS) has been running JS Innovation Program* since 2011. The program aims to encourage the development of new technologies that meet various needs of municipal wastewater business and facilitate the adoptions of the innovative technologies to our entrusted projects.
JS newly registers the following three technologies on its Innovation Program.

Feedforward Aeration Control by Ammonia Meter

Developer: JS, Nissin Electric Co.,Ltd., Nissin Systems Co.,Ltd.
Summary and Features: In the feedforward supply air control technology, a reactor has two ammonia meters inside, which automatically control the aeration depending on the inflow nitrogen load and nitrification status. The new technology targeting to activated sludge process that accelerates nitrification aims energy-saving by the reduction of aeration. At the same time, it also aims to stabilize the quality of treated water such as NH4-N concentration.

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Aeration Control Device Consisting of Ammonia Meter and Control Panel

Developer: JS, Kobelco eco-solutions Co.,Ltd.
Summary and Features: In this system, an ammonia meter and a DO meter inside a reactor automatically adjust target DO concentration depending on the nitrification status for aeration control. The system aims to reconcile energy-saving and stabilization of the treated water quality such as NH4-N for various kinds of activated sludge process accelerating nitrification.

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Downsized Belt-press Dehydrator

Developer: JS, Tsukishima Kikai Co.,Ltd.
Summary and Features: The new belt-press dehydrator is a combination of a thickening part and a dewatering part including a high concentration-adaptive feeding device. This unique mechanism to maintain dewaterability not only improves the filtration rate by 1.5 times but has achieved downsizing while it has the equivalent treatment performance to the conventional highly efficient belt-press dehydrator.
Besides, the new dehydrator is adaptable to a poly ferric sulfate injection system. This option enables the reduction of the water content rate of sludge and LCC reduction.

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* Note that JS Innovation Program verifies registered technologies for their applicability only at JSf entrusted projects.

* The validity of the JS Innovation Program is five years from the date of registration. If the registration is modified, validity starts on the date of the modification. Validity can be extended until a maximum of ten years if developers apply.