| Title |
A Case Study on the Efficiency Improvement of Municipal Sewage Plant Treating a Low Concentration Influent |
| Authors |
안익성 ( An Ig Seong ) ; 정팔진 ( Jeong Pal Jin ) ; 원찬희 ( Won Chan Hui ) ; 조선영 ( Jo Seon Yeong ) |
| Keywords |
optimizing procedure; SVI; F/M ratio; dewatered sludge; BOD SS equivalent regression |
| Abstract |
This research is carried out in full scale sewage plant in order to induce the most suitable condition of biological treatment which fits operation system of low concentration influent municipal sewage. However the research on extreme operating condition over the standard of discharged water(BOD:20㎎/ℓ) could not be done.(because this research was carried on real running plant) The experimental result of proper dewatered sludge will stabilize circular system of sewage plant(cake product:about 3.0ton/day) and it will contribute to the stabilization of aeration tank, the main treating process. The treatment plant have shown the tendency in lower concentration of influent about 55㎎/L(as BOD) with comparison to the originally designed Influent(150㎎/L as BOD). When the plant was run with MLSS as 1,000-3,500㎎/L for 5 months, F/M ratio over 0.1 was available for more effective management with all of SVI, SDI. and effluent BOD considered for the plant. The result of BOD-SS equivalent regression of effluence indicated that suitable operation of F/M ratio improve removal about 50% soluble effluent BOD. |