大腸菌群数計測装置を用いた高効率オゾン消毒システムの開発 [in Japanese] Development of Highly Efficient Wastewater Disinfection System of Using Quick Monitoring System for Coliforms [in Japanese]
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A highly efficient ozone disinfection system was developed to decreasing the influence of the overflow of untreated wastewater during rainy weather at pump stations and wastewater treatment plants in a combined sewer system. The ozone disinfection system is a feed forward system that controls the amount of ozone with the result of measuring the number of coliforms using the quick monitoring system within 10 minutes. Simulations for calculating the effect of saving disinfectant on the ozone disinfection model were executed using the already obtained dates. The result of the calculation showed that the amount of ozone is expected to be reduced by 21-41% using this new quick disinfection system compared with the former flow proportional control system. Two minutes of disinfection time was sufficient for the quick disinfection of coliforms, when the quick monitoring system detected the number of coliforms within ten minutes. These results lead the conclusion that this system is good for the environment and saves cost by decreasing the amount of money spent on disinfectants for coliforms.
- Japan journal of water pollution research
Japan journal of water pollution research 30(3), 139-144, 2007-03-10
Japan Society on Water Environment