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11
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Title |
Evaluation of Self-Cleaning pH Electrodes in Factories |
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üâÌ£Âó±Ê1)¡¤À¾Èøͧ»Ö1)¡¤¼¼²ì¼ù¶½1)¡¤¶¶ËÜÃéÈÏ2)¡¤Àи¶ ÆÆ2) |
Authors |
Takuhisa Komi 1), Yuji Nishio 1), Tatsuoki Muroga 1), Tadanori Hashimoto 2), Atsushi Ishihara 2) |
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1) HORIBA Advanced Techno, Co., Ltd. 2) Division of Chemistry for Materials, Graduate School of Engineering, Mie University |
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Key Words |
water quality measurement, pH electrode, wastewater treatment, reduced maintenance, photocatalyst |
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Abstract |
We developed a self-cleaning pH electrode with a durable antifouling protection by photocatalytic effect. Our goal with this project was to solve common problems in electrode maintenance such as personnel shortages, electrode cleaning costs, periodic calibrations, on-site movements, and risk on worker safety. The self-cleaning pH electrode was evaluated over several months at sites heavily polluted by various organic and inorganic species. We have extended the maintenance cycles of wastewater treatment tanks in machine factories and returned sludge tanks in chemical factories by about 120 times and 60 times, respectively. This paper highlights the structure, features of the newly developed electrode. We also discuss results of measurements from wastewater treatment tanks using inorganic flocculants and wastewater influent tanks containing a lot of protein. |