General nature of soluble and particulate organics in sewage and secondary effluent

Rickert, David A.; Hunter, Joseph V.

doi:10.1016/0043-1354(71)90005-4

Cited by 54 publications

(19 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…During feed with filtered wastewater in R2 (period 2) the PHA comprised 78% of the required COD for denitrification and the remaining 22% of COD were supplied by particulate organic matter which passed the filters −10% of the original wastewater suspended solids in addition to the colloidal particulate organic matter found in the filtered fraction of wastewater. [33] These results confirm that while PBD under realistic operational conditions may be limited by its ability to provide sufficient reducing power in the form of PHA for complete denitrification of the nitrogen content in wastewater, the entrapped wastewater suspended solids during the storage step can provide an important source of additional reducing power for denitrification, thus increasing the denitrification capacity by about 50%.…”

Section: Denitrification Stage Resultssupporting

confidence: 77%

The contribution of suspended solids to municipal wastewater PHA-based denitrification

Krasnits

Beliavski

Tarre

et al. 2013

Environmental Technology

View full text Add to dashboard Cite

The role of wastewater suspended solids in denitrification based on intracellular carbon storage was investigated in a biofilm sequencing batch reactor performing alternately anaerobic carbon storage and denitrification. Municipal wastewater as the feeding was compared with filtered wastewater and with acetate. The results show that the amount of PHA (polyhydroxyalkanoates) stored during a cycle was quite similar, irrespective of the substrate type used as feeding (acetate, real wastewater and real wastewater after filtration). PHA storage was limited even under excess chemical oxygen demand (COD) conditions, with a reducing power capacity enough for denitrification of only 25-26 mg/L N. However, when non-filtered wastewater was used, the denitrification capacity was about 50% higher (38 mg/L N) due to the contribution of entrapped suspended solids as the electron donor. In addition, the involvement of the hydrolyzed wastewater suspended solids resulted in a different PHA composition containing a much higher poly-3-hydroxyvalerate content.

show abstract

Section: Denitrification Stage Resultssupporting

confidence: 77%

The contribution of suspended solids to municipal wastewater PHA-based denitrification

Krasnits

Beliavski

Tarre

et al. 2013

Environmental Technology

View full text Add to dashboard Cite

show abstract

“…The COD/TOC ratio of the source material was thus 2.67 6 0.04 indicating an average oxidation number of the carbon atoms in the organic compounds of around zero. The average oxidation number was estimated using COD/TOC ratio, based on the correlation suggested by Rickert and Hunter (1971).…”

Section: Resultsmentioning

confidence: 99%

Pretreatment of Wastewater from Licorice Processing—A Preliminary Evaluation

Ramaswami¹,

Behrendt²,

Gulyas³

et al. 2016

Water Environment Research

View full text Add to dashboard Cite

This study was performed as a preliminary investigation of anaerobic digestion and the activated sludge process as pretreatment options for highly loaded wastewater from licorice processing (approximately 8000 mg COD/L). Only 15% reduction of initial chemical oxygen demand (COD) was achieved by anaerobic digestion, whereas up to 80% reduction was attained with activated sludge process. Adsorption using powdered activated carbon (PAC) was studied for the removal of color and residual organics from the effluent of aerobic treatment. The combination of aerobic biological treatment with activated carbon adsorption offers a high-quality effluent, however only at very high carbon dosage (>2 kg PAC/m3).

show abstract

“…Wastewater is a term used to describe a complex mixture of wastes comprising all water discharged directly from domestic homes, industrial and agricultural business, road run-off, and any materials that may leak through damaged sewerage systems [1].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Some Microbiological and Physico-chemical Composition of Domestic Wastewater in Rivers and Bayelsa States

Azeez¹,

Olufemi²

2017

CSIJ

View full text Add to dashboard Cite

Aims: This research study aims at ascertaining the inhibitive contributions of these domestic effluents even as they flow from drains into the rivers. Study Design: The microbiological and physico-chemical composition of domestic wastewater in Rivers and Bayelsa States was achieved experimentally. Place and Duration of Study: The study was carried out in Rivers and Bayelsa states, Nigeria, between August 20016 and January 2017. Methodology: The waste water samples were aseptically collected from domestic points using 1 litre sterile polyethylene bottles filled with ice and was immediately taken to the laboratory for analysis to improve reliability of data and they were stored at 4°C for further analysis. Results: The physicochemical analysis of wastewater collected from 20 stations were investigated. These parameters were analyzed by standard methods. The color of the collected sewage water was pale yellow to black and was turbid in some selected stations. Unpleasant odor was observed

show abstract

General nature of soluble and particulate organics in sewage and secondary effluent

Cited by 54 publications

References 3 publications

The contribution of suspended solids to municipal wastewater PHA-based denitrification

The contribution of suspended solids to municipal wastewater PHA-based denitrification

Pretreatment of Wastewater from Licorice Processing—A Preliminary Evaluation

Evaluation of Some Microbiological and Physico-chemical Composition of Domestic Wastewater in Rivers and Bayelsa States

Contact Info

Product

Resources

About