Differences in thickness variations of activated carbon in decreasing oil and grease levels using modified grease trap on the canteen wastewater

Abstract

Wastewater is residual water from either or both industrial activities and non-industrial activities. Non-industrial wastewater such as domestic wastewater is derived from human daily life activities related to water use according to the Indonesian Regulation of the Minister of Environment and Forestry No 68 of 2016 concerning domestic wastewater quality standards (Peraturan Menteri Lingkungan Hidup tentang baku mutu air limbah, BNRI No 1323, 2016). Domestic wastewater (greywater) is wastewater originating from kitchen activities, toilets, sinks, and more, which will cause water pollution and impact on the aquatic life when directly discharged into the environment without any prior treatment. The characteristics of domestic wastewater are generally grouped into physical, chemical, and biological characteristics. The physical characteristics of domestic wastewater include TSS (suspended residue), chemical characteristics include pH, ammonium, COD, and BOD, while organic chemistry includes oil and grease, and biological characteristics such as total coliform according to the aforementioned regulation. Wastewaters with those parameters are prohibited from being discharged into water bodies if they do not meet the predetermined quality standards. Wastewater quality standards are a tolerable limit or level of pollution in the wastewater that will be disposed or released into the water bodies as a result of either Scientific Review – Engineering and Environmental Sciences (2021), 30 (1), 106–116 Sci. Rev. Eng. Env. Sci. (2021), 30 (1) Przegląd Naukowy – Inżynieria i Kształtowanie Środowiska (2021), 30 (1), 106–116 Prz. Nauk. Inż. Kszt. Środ. (2021), 30 (1) http://iks.pn.sggw.pl DOI 10.22630/PNIKS.2021.30.1.10