| Title |
An Innovative Expert System for the Maintenance of On-site Wastewater Treatment Process for Small-scale Residential and Commercial Sites |
| Authors |
김승준 ( Seung Jun Kim ) ; 최용수 ( Yong Su Choi ) ; 홍석원 ( Seok Won Hong ) ; 권기한 ( Gi Han Kwon ) ; 정익재 ( Ik Jae Chung ) |
| Keywords |
Hybrid bioreactor; Expert system; Process control Logic; PLC system; HMI system; Small wastewater treatment system |
| 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 ㎎/L, respectively. According to the result from pilot tests, the quality of treated wastewater with sand filtration was enough to be utilized again. |