Chemical-Free Biologically Enhanced Primary Treatment of Raw Wastewater for Improved Capture Carbon
Open Access
- 24 November 2022
- Vol. 14 (23), 3825
- https://doi.org/10.3390/w14233825
Abstract
Conventional wastewater treatment processes require extensive energy inputs for their operations. Biologically enhanced primary treatment (BEPT) is a promising technology to capture incoming organics that may be utilized to produce biogas and potentially hydrogen with further downstream processing. This study involved a biologically enhanced primary treatment (BEPT) of raw wastewater at bench and pilot-scale using activated sludge (AS) addition and dissolved air flotation (DAF) using raw wastewater at a municipal wastewater facility in Western Australia with average chemical oxygen demand of ~800 mg/L. The results of pilot-scale testing showed an improved removal performance for total chemical oxygen demand (COD-T), soluble chemical oxygen demand (COD-S), and total suspended solids (TSS) compared to conventional primary treatment (PT). Specifically, average COD-T, COD-S and TSS removals for BEPT were 33.3%, 13.5% and 45%, respectively which was 10%, 100% and 6% higher than PT. Moreover, the sludge produced from BEPT had a high solids content of 4.8 g/L, which might not need further thickening prior to anaerobic digestion. It is important to note that no chemicals were used during BEPT testing, which makes the process very cost-effective.Funding Information
- Water Corporation
This publication has 32 references indexed in Scilit:
- Energy and nutrient recovery for municipal wastewater treatment: How to design a feasible plant layout?Environmental Modelling & Software, 2015
- Energy and water autarky of wastewater treatment and power generation systemsRenewable and Sustainable Energy Reviews, 2015
- Innovative use of dissolved air flotation with biosorption as primary treatment to approach energy neutrality in WWTPsWater Practice & Technology, 2015
- Recovery of Freshwater from Wastewater: Upgrading Process Configurations To Maximize Energy Recovery and Minimize ResidualsEnvironmental Science & Technology, 2014
- Investigation on micro-bubble flotation and coagulation for the treatment of anaerobically treated palm oil mill effluent (POME)Journal of Environmental Chemical Engineering, 2014
- Principle and applications of microbubble and nanobubble technology for water treatmentChemosphere, 2011
- Domestic Wastewater Treatment as a Net Energy Producer–Can This be Achieved?Environmental Science & Technology, 2011
- Determination of the Internal Chemical Energy of WastewaterEnvironmental Science & Technology, 2010
- Cost comparison of wastewater treatment in Danubian countriesWater Science & Technology, 2010
- Maximum use of resources present in domestic “used water”Bioresource Technology, 2009