Performance Evaluation of a Field-Scale Anaerobic Baffled Reactor as an Economic and Sustainable Solution for Domestic Wastewater Treatment

Abstract

The present study explored the efficiency of a four-chambered anaerobic baffled reactor (ABR) as a cost-effective and sustainable method of organic pollutant and pathogen removal from domestic wastewater, under a range of environmental conditions. An ABR with a circular additional filter at the outlet pipe was constructed to treat wastewater from a residential colony of 108 households with an average inflow of 110 m3/day and a nominal hydraulic retention time (HRT) of 20 h. Analysis of the chemical oxygen demand (COD), total nitrogen, sulfate and phosphate load, and total coliform removal for 2 years of operation, 2015 and 2017, showed a COD of 46%, sulfate load of 28%, phosphate load of 51% and total nitrogen of 28% for 2015, compared to a COD of 48%, sulfate load of 44%, phosphate load of 58% and total nitrogen of 31% for 2017. The lack of a significant effect of sludge removal suggested a stable process. The overall efficiency of the ABR increased in the summer, including for pathogen removal, which was significantly higher during the summer months of both years. Overall, the ABR was found to be able to consistently treat primary wastewater, although tertiary effluent treatment was still required before water reuse or final discharge.

Small-Scale Operation of an Integrated Anaerobic Baffled Reactor and Biofilter: Factors Affecting Its Performance

“…Our results were compared with those of Ayaz et al (2015), Hahn and Figueroa (2015), Schalk et al (2019), Saif et al (2021), andPfluger et al (2018) who reported the efficiency of pilot-scale or full-scale ABR under moderate-low temperatures and dynamic operating conditions. These references were included in Table 3.…”

“…In the study area, atmospheric temperatures were highly variable, ranging from 3 to 31°C during the monitoring period of October 2018 to July 2019 based on stations operated by a From full and pilot scale studies reported by Ayaz et al (2015), Hahn and Figueroa (2015), Schalk et al (2019), Pfluger et al (2018), andSaif et al (2021). SENAMHI (2018).…”

Performance Evaluation of Mobile Integrated On-site Greywater Treatment System

“…This sequential flow from influent to effluent enhances the treatment process. Prior studies have demonstrated the efficacy of ABR in remediating greywater (Yasmin Saif et al, 2021 [1]; Shirish Singha, Raimund Haberl et al, 2008 [2]). Bio-rack CW, on the other hand, has primarily been utilized for the biological treatment of greywater.…”

Comparative Evaluation of Membrane Filtration on the Tertiary Treatment of Synthetic Secondary Effluent

“…It can justify the additional cost of replacing the existing sand filtration units with the membrane filtration units. Among the different technologies investigated for reuse, there are coagulation [25], anaerobic baffled reactor [26], chitosan modified membrane [27], adsorption [28][29][30][31][32], and activated sludge [33]. Other than treatment technologies, the integration of energy and water systems are also explored for suitable reuse options [34].…”