Maximizing energy recovery from wastewater via bioflocculation-enhanced primary treatment: a pilot scale study

Dolejš, Petr; Varga, Zdenek; Luza, Benjamin; Pícha, Aleš; Jenı́ček, P.; Jeison, David; Bartáček, Jan

doi:10.1080/09593330.2019.1697377

Cited by 9 publications

(4 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Meerburg et al [94] showed that HiCS, as a primary wastewater treatment technology, was able to recover up to 55% of incoming organic matter as sludge. Based on a pilot-scale study, Dolejs et al [18] reported a COD removal of 76.6% using bioflocculation. Dolejs et al [18] argue that bioflocculation-enhanced primary treatment has several benefits over CEPT or conventional primary treatment.…”

Section: Comparison Of Cept With Other Alternative Methodsmentioning

confidence: 99%

“…Based on a pilot-scale study, Dolejs et al [18] reported a COD removal of 76.6% using bioflocculation. Dolejs et al [18] argue that bioflocculation-enhanced primary treatment has several benefits over CEPT or conventional primary treatment. In summary, a holistic assessment considering the advantages and disadvantages of these alternatives in comparison to CEPT should be made to decide the best method for the up-concentration of organic matter.…”

Section: Comparison Of Cept With Other Alternative Methodsmentioning

confidence: 99%

“…Therefore, CEPT is often combined with other processes (such as shortcut nitrification-denitrification, ion exchange) if removal of nitrogen is required [12,[15][16][17]. Dolejs et al [18] considered two process schemes to achieve energy neutrality or reduce energy consumption using CEPT in wastewater treatment facilities. First, a two-stage biological process, i.e., a high-rate primary treatment for COD capture (generally named A-stage) and biological nutrient removal systems as secondary treatment (B-stage).…”

Section: Application and Efficiencies Of Cept Processesmentioning

confidence: 99%

See 2 more Smart Citations

Revisiting Chemically Enhanced Primary Treatment of Wastewater: A Review

Shewa

Dagnew

2020

Sustainability

View full text Add to dashboard Cite

Chemically enhanced primary treatment (CEPT) is a process that uses coagulant and/or flocculant chemicals to remove suspended solids, organic carbon, and nutrients from wastewater. Although it is not a new technology, it has received much attention in recent years due to its increased treatment capacity and related benefits compared to the conventional primary treatment process. CEPT involves both physical and chemical processes. Alum and iron salts are the commonly used coagulants in CEPT. Several types of anionic, cationic, and uncharged polymers are used as flocculants, where poly aluminum chloride (PACL) and polyacrylamide (PAM) are the widely used ones. Some of the coagulants and flocculants used may have inhibitory and/or toxicity effects on downstream treatment and recovery processes. There has been an increasing amount of work on the treatment of wastewaters from various sources using CEPT. These wastewaters can range from municipal/domestic wastewater, combined sewer overflow, landfill leachate, cattle manure digestate to wastewaters from textile industry, pulp and paper mill, slaughterhouse, milk processing plant, tannery and others. In recent cases, CEPT is employed to enhance carbon redirection for recovery and substantially reduce the organic load to secondary treatment processes. CEPTs can remove between 43.1–95.6% of COD, 70.0–99.5% suspended solids, and 40.0–99.3% of phosphate depending on the characteristics of wastewater treated and type of coagulants and/or flocculants used. This article reviews the application, chemicals used so far, removal efficiencies, challenges, and environmental impacts of CEPT.

show abstract

Section: Comparison Of Cept With Other Alternative Methodsmentioning

confidence: 99%

Section: Comparison Of Cept With Other Alternative Methodsmentioning

confidence: 99%

Section: Application and Efficiencies Of Cept Processesmentioning

confidence: 99%

See 1 more Smart Citation

Revisiting Chemically Enhanced Primary Treatment of Wastewater: A Review

Shewa

Dagnew

2020

Sustainability

View full text Add to dashboard Cite

show abstract

“…In advanced primary treatment, organic carbon can be captured upfront, hence reducing the load on secondary treatment and recovering organic carbon to potentially produce energy. There are various alternatives to conventional primary treatment, such as high-rated activated sludge (HRAS), chemically enhanced primary treatment (CEPT) or membrane bioreactors (MBR) to concentrate the organic matter present in the wastewater [22][23][24][25][26][27]. HRAS systems have been extensively studied as an alternative to primary treatment, as has CEPT.…”

Section: Introductionmentioning

confidence: 99%

Chemical-Free Biologically Enhanced Primary Treatment of Raw Wastewater for Improved Capture Carbon

Azhar

Nolan

Cadee

et al. 2022

Water

View full text Add to dashboard Cite

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.

show abstract

Near Future Energy Self-sufficient Wastewater Treatment Schemes

Sarpong

Gude

2020

Int J Environ Res

View full text Add to dashboard Cite

Maximizing energy recovery from wastewater via bioflocculation-enhanced primary treatment: a pilot scale study

Cited by 9 publications

References 39 publications

Revisiting Chemically Enhanced Primary Treatment of Wastewater: A Review

Revisiting Chemically Enhanced Primary Treatment of Wastewater: A Review

Chemical-Free Biologically Enhanced Primary Treatment of Raw Wastewater for Improved Capture Carbon

Near Future Energy Self-sufficient Wastewater Treatment Schemes

Contact Info

Product

Resources

About