Topic
Wastewater
About: Wastewater is a research topic. Over the lifetime, 92512 publications have been published within this topic receiving 1256590 citations. The topic is also known as: waste water.
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TL;DR: The use of electro-coagulation as post-treatment technology completely detoxified the anaerobic effluent and removed its toxic compounds.
226 citations
TL;DR: In this article, the qualities of the treated final effluents of a wastewater treatment plant located in a rural community of the Eastern Cape Province of South Africa were assessed over the duration of 12 months.
Abstract: The qualities of the treated final effluents of a wastewater treatment plant located in a rural community of the Eastern Cape Province of South Africa were assessed over the duration of 12 months. Parameters measured include pH, temperature, electrical conductivity, salinity, turbidity, total dissolved solid, dissolved oxygen, chemical oxygen demand, nitrate, nitrite and orthophosphate levels and these were simultaneously monitored in the treated final effluents and the receiving watersheds using standard methods. Unacceptably, high levels of the assayed parameters were observed in many cases for chemical oxygen demand (7.5–248.5 mg/L), nitrate (1.82–13.14 mg/L), nitrite (0.09–1.3 mg/L), orthophosphate (0.07–4.81 mg/L), dissolved oxygen (4.15–11.22 mg/L) and turbidity (3.68–159.06 NTU) during the study period and are severally outside the compliance levels of the South African Guidelines and World Health Organization tolerance limits for effluents intended for discharge through public sewers into receiving watersheds. The study has revealed that there was an adverse impact on the physico-chemical characteristics of the receiving watershed as a result of the discharge of inadequately treated effluents from the wastewater treatment facility. This poses a health risk to several rural communities which rely on the receiving water bodies primarily as their sources of domestic water. There is need for the intervention of appropriate regulatory agencies to ensure production of high quality treated final effluents by wastewater treatment facilities in rural communities of South Africa.
225 citations
TL;DR: For high strength domestic wastewater treatment, AnMBR recovered 15% more net energy than HRAS+AD, and the environmental emissions gap between the two systems was reduced, and future developments of An MBR technology in low energy fouling control, increased flux, and management of effluent methane emissions would make AnMBr competitive with HRAS-AD.
Abstract: The objective of this study was to evaluate emerging anaerobic membrane bioreactor (AnMBR) technology in comparison with conventional wastewater energy recovery technologies. Wastewater treatment process modeling and systems analyses were combined to evaluate the conditions under which AnMBR may produce more net energy and have lower life cycle environmental emissions than high rate activated sludge with anaerobic digestion (HRAS+AD), conventional activated sludge with anaerobic digestion (CAS+AD), and an aerobic membrane bioreactor with anaerobic digestion (AeMBR+AD). For medium strength domestic wastewater treatment under baseline assumptions at 15 °C, AnMBR recovered 49% more energy as biogas than HRAS+AD, the most energy positive conventional technology considered, but had significantly higher energy demands and environmental emissions. Global warming impacts associated with AnMBR were largely due to emissions of effluent dissolved methane. For high strength domestic wastewater treatment, AnMBR recove...
225 citations
TL;DR: In this article, the efficiency and reliability of these processes are evaluated for different reuse applications, and the critical analysis of the literature data and experimental results highlights UV irradiation as an effective and competitive advanced disinfection process.
225 citations
TL;DR: In this paper, the effects of acetate and different salts present in the feeding of a SHARON reactor have been evaluated, and it was shown that concentrations up to 0.2 g TOC/L did not exert significant effect on the ammonia oxidation to nitrite.
224 citations