Author:
Lantin Jahziel,Abenoja Jeremy Ynnos,Ly Jason,Castillones Cheenee Marie,Beltran Arnel,Orbecido Aileen
Abstract
Assessment and upgrade of existing sewage treatment plants (STPs) are necessary due to the revision of the existing effluent regulations which now monitors nutrients including ammonia, nitrate and phosphates. The aim of this study is the performance evaluation of four sequencing batch reactor (SBR) type of STP based on the following parameters: biological oxygen demand (BOD), chemical oxygen demand (COD), total suspended solids (TSS), nitrates, ammonia, phosphates and pH; and their potential upgrade based on the revised regulations stated in DAO 2016-08. Four sequencing batch reactor (SBR) type of STP were assessed for 12 weeks for this study. Results showed noncompliance with nutrient levels, thus upgrade is necessary. Analytical Hierarchy Process (AHP), a Multi-Criteria-Analysis (MCA) tool, was used to select the best option for upgrade among options that include (1) additional SBR tank, (2) diverting wastewater to another treatment facility, and (3) converting the SBR into membrane bioreactor (MBR). Considering the criterion for upgrade, option 2 was the most preferred decision followed by option 1 then option 3.
Reference13 articles.
1. Mara D. (2013). What is Domestic Wastewater and Why Treat It? In Domestic Wastewater Treatment in Developing Countries (pp. 1–7). Sterling, VA: Routledge.
2. DENR Administrative Order No. 08 Series of 2016 (DAO 2016-08). Water Quality Guidelines and General Effluent Standards of 2016. https://server2.denr.gov.ph/uploads/rmdd/dao-2016-08.pdf. Accessed November 2014.
3. DENR Administrative Order No. 35 Series of 1990 (DAO 1990-35). Revised Effluent Regulations of 1990, Revising and Amending the Effluent Regulations of 1982. http://policy.denr.gov.ph/1990/ENV_DAO_1990-35.pdf. Accessed November 2014.
4. Gianguzza A., Pelizzetti E., & Sammartano S.(Eds.). (2002). Chemistry of marine water and sediments. Springer Science & Business Media.
5. Goel R., Mino T., Satoh H., & Matsuo T. (1998). Enzyme activities under anaerobic and aerobic conditions in activated sludge sequencing batch reactor. Water Research, 2081–2088. http://0-www.sciencedirect.com.lib1000.dlsu.edu.ph/scien ce/article/pii/S0043135497004259. Accessed 29 November 2014.