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An Innovative Expert System for the Maintenance of On-site Wastewater Treatment Process for Small-scale Residential and Commercial Sites  

Kim, Seung-jun (Water Environment and Remediation Research Center, Korea Institute of Science and Technology)
Choi, Yong-su (Water Environment and Remediation Research Center, Korea Institute of Science and Technology)
Hong, Seok-won (Water Environment and Remediation Research Center, Korea Institute of Science and Technology)
Kwon, Gi-han (Water Environment and Remediation Research Center, Korea Institute of Science and Technology)
Chung, Ik-jae (Water Environment and Remediation Research Center, Korea Institute of Science and Technology)
Publication Information
Journal of Korean Society on Water Environment / v.21, no.2, 2005 , pp. 132-140 More about this Journal
Abstract
The pilot test of a new alternative for small wastewater treatment system has been conducted for two years. It consists of a hybrid bioreactor and the expert system including the process control logic, PLC system, and HMI for the process automation. In order to monitor and remote control its status, the real-time data was transferred from the on-site control center to the central station via a wireless local area network. More efficient and stable performances were observed at automatic operating mode compared with the manual. On an average, COD, SS, T-N and T-P concentrations in the effluent from the hybrid bioreactor were less than 14, 7, 12 and 0.9 mg/L, respectively. According to the result from pilot tests, the quality of treated wastewater with sand filtration was enough to be utilized again.
Keywords
Hybrid bioreactor; Expert system; Process control logic; PLC system; HMI system; Small wastewater treatment system;
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