Treatment efficiency of a combination of alternative technologies in removing pollutants from pesticide containing wastewater

Abstract

Pesticide containing wastewater is concerned due to their toxicity to human health and the environment, and therefore, is attracted much attention by public communities and scientists. This type of wastewater can be treated by conventional treatment methods including physical, chemical, biological methods and so on. Unfortunately, the efficiency of these methods are mostly undesired as expectation because they cannot completely remove toxic organic pollutants from wastewater. In this study, an experiment on laboratory scale model of cold plasma technology, a well-known water treatment method in recent decades, was performed to assess its efficiency on removing pesticide fenobucarb from the wastewater. Furthermore, another experiment on laboratory scale model of the cold plasma combined with coagulation/flocculation and ion exchange process was implemented to assess the efficiency of these combination and each process as well on treatment of pesticide containing wastewater. Experimental results demonstrated that the model of technologies combined was high effective in removing organic pollutants from wastewater. However, the specific efficiency of cold plasma technology in treating wastewater was low. Treatment time, energy supply and wastewater characteristics are the factors which are necessary to be further studied for cold plasma technology application.

Sustainable Proposal for Regulating Organophosphate Pesticides in Wastewater Treatment Plants in South Korea

“…The low average removal efficiency of diazinon was likely related to its 0% removal efficiency from W13, which is one of only two AWWTPs (W12 and W13) in which it was detected in the influent. Notably, the results indicate that diazinon was not removed because the AW was treated simply through FL (Table 2), a technique that has been previously reported to have low removal efficiency for diazinon (15.5%) [24]. Comparatively, an ASP was implemented as the main treatment technique in W12 (with FL as an auxiliary technique), and the complete removal (100%) of diazinon The characteristics of OP occurrence in AMFs and AWWTPs can be summarized based on two main points: first, large standard deviations were observed around the average concentrations (Figure 1); second, the OP concentrations observed in AWWTP influent were substantially higher than those in sewage treatment plant (STP) influent according to previous studies.…”

Improved hydrolysis of sewage sludge by air-assisted non-thermal plasma for enhanced biomethane recovery

“…Non-thermal plasma (NTP) technologies, promising advanced oxidation processes (AOPs), have received attention as an alternative due to their capacity and performance for pollutants removal from wastewater (Lee et al 2018;Pham et al 2021) and biogas catalytic partial oxidation (Ra q and Hustad 2011), as well as their effectiveness. NTP is usually applied using air or different inert carrier gases, electrical discharge under a controlled temperature (T), and pressure.…”

Assessment of Fenobucarb and Propoxur insecticides in environmental samples by spectrophotometric and spectrofluorimetric methods

“…Due to solubility of these insecticides in water, fenobucarb 420 mg/L at 20 o C and propoxur 1860 mg/ L at 30 o C (Pham et al 2021;Tabibi and Jafari 2006), they have the potential to enter the surface water through surface run off and also leach down into groundwater. This leads to their residues in different environmental segments and accumulation in humans and other non-target species, which causes potential hazard to human health and environment (Zheng 2017;Ma et al 2022;Lawrence et al 2009;Tada et al 2009).…”