Enhancement of Drinking Water Treatment by Combined Filtration-ICPS: Integrated, Based on EEMS, DOC, UV260 and Removal of Pathogenic Bacteria

Abstract

The impact of natural organic matter (NOM) and pathogenic bacteria in water are of great concern in water treatment due to their effect on human health. In this study, the ability to combine filtration with an inductively coupled plasma system (ICPS) to remove natural organic matter and pathogenic bacteria from water was investigated. UV260 adsorption, dissolved organic carbon (DOC) and excitation-emission matrices (EEMs) were used to evaluate the removal of NOM by the filtration-ICPS combination. The system was operated at two different flow rates, 100 and 150 ml/minute. Decreasing trend revealed for UV260 and DOC with the higher flow rate. Tryptophan-like substances generally found in water were taken as a measure of microbial activity. This preliminary research shows that the average removal efficiencies for fecal coliforms, total coliforms and salmonella were highest at a flow rate of 100 ml/minute. It can be concluded that the combined filtration-ICPS method is capable of removing NOM and pathogenic bacteria from water.

Tofu Industrial Wastewater Treatment with Ozonation and the Adsorption Method using Natural Zeolite

“…Ozonation is a well-known method that can degrade and reduce the toxicity of organic and inorganic compounds. Ozone can easily decompose to hydroxyl radicals, which can eliminate pollutants in wastewater (Derco et al, 2015;Desmiarti et al, 2019). The addition of adsorbent to this process can also increase hydroxyl radical production, resulting in more effective and faster oxidation of organic compounds (Fujita et al, 2004;Zhang et al, 2016;Ghuge & Saroha, 2018).…”

Effect of Radio-Frequency Treatment on the Changes of Dissolved Organic Matter in Rainwater

“…RF currents in conductors can radiate into space as radio waves and induce heat to provide physical and chemical effects in solution that are capable of degrading high molecular weight organic pollutants [27,28]. RF can generate oxidant species such as hydroxyl radicals (•OH), hydrogen peroxide (H 2 O 2 ), and ozone (O 3 ), and these oxidizing species have a high potential to decompose organic compounds in water [29][30][31].…”