Performance of sequencing batch biofilm and sequencing batch reactors in simultaneousp‐nitrophenol and nitrogen removal

Abstract

The objective of this study is to evaluate the performance of sequencing batch biofilm reactors (SBBRs) and sequencing batch reactor (SBR) in the simultaneous removal of p-nitrophenol (PNP) and ammoniacal nitrogen. SBBRs involved the use of polyurethane sponge cubes and polyethylene rings, respectively, as carrier materials. The results demonstrate that complete removal of PNP was achievable for the SBR and SBBRs up to the PNP concentration of 350 mg/l (loading rate of 0.368 kg/m3 d). At this loading rate, the average ammoniacal nitrogen removal efficiency for the SBR and SBBR (with polyethylene rings) was reduced to 86% and 96%, respectively. However, the SBBR (with polyurethane sponge cubes) still managed to achieve an almost 100% ammoniacal nitrogen removal. Based on the results, the performance of the SBBRs was better than that of SBR in PNP and ammoniacal nitrogen removal. The results of the gas chromatography mass spectroscopy, high-performance liquid chromatography and ultraviolet-visible analyses indicate that complete mineralization of PNP was achieved in all of the reactors.

Simultaneous nitrification–denitrification and phosphorus removal in a fixed bed sequencing batch reactor (FBSBR)

“…A group of researchers [10] investigated the performance of MBSBR and SBR in simultaneous p-nitrophenol and nitrogen removal. Their results demonstrate that complete removal of PNP was achievable for the SBR and MBSBR up to loading rate of 0.368 kg/m 3 per day.…”

Treatment of landfill leachate in sequencing batch reactor supplemented with activated rice husk as adsorbent

“…This assures biofilms attachment on MRH and allows MRH to function like a carrier material in a sequencing batch biofilm reactor (SBBR). The better performance of SBBR is due to the bioactivity of attached-growth biomass being less inhibited by toxic constituents than the suspended-growth biomass [25]. In this study, the presence of attached biofilm on the surface of the MRH could not be confirmed experimentally due to interference caused by the overwhelming presence of the suspended biomass.…”

Effects of cycle time and fill time on the performance of an anaerobic–anoxic–aerobic-fed batch moving-bed reactor

“…Goh et al [32] reported that a sequencing batch biofilm reactor (SBBR) (with polyurethane sponge cubes) showed better performance than a SBR, as the SBBR achieved almost complete removal of ammonia-nitrogen, while the SBR achieved on average 86% when both were used in the simultaneous removal of p-nitrophenol and ammonianitrogen. Kim et al [33] achieved 87% NH + 4 -N removal efficiency at a loading of 0.17 g/l.day in an aerobic reactor in an anoxic-aerobic suspended growth system, which was comparable with the present findings.…”