Corpus ID: 55018985

Effect of COD/N ratio on simultaneous removal of nutrients and COD from synthetic high strength waste water under anoxic conditions

  title={Effect of COD/N ratio on simultaneous removal of nutrients and COD from synthetic high strength waste water under anoxic conditions},
  author={Jyotsnarani Jena and Sanak Ray and Sony Pandey and Trupti Das},
under anoxic conditions has been attempted in the current study. Maximum removal of nitrate (98%), PO 4 (96%) and COD (93%) was achieved at a COD/N ratio of 1.62. PO 4 removal rate ranged between 77.6, 88.7, 90.5, 95.9, 93.1 and 93.2% at a COD/N ratio of 0.36, 0.97, 1.36, 1.62, 4.06 and 6.37 respectively. Thus PO 4 removal rate was more or less impervious to varying concentration of nitrate and carbon load in the system. pH measurements during the course of reaction, gave new insights into the… Expand

Figures and Tables from this paper

Evaluation of Simultaneous Nutrient and COD Removal with Polyhydroxybutyrate (PHB) Accumulation Using Mixed Microbial Consortia under Anoxic Condition and Their Bioinformatics Analysis
It was apparent that in spite of a high carbon load, maximum COD and nutrient removal can be maintained, with adequate nitrate-N availability. Expand
Anoxic–aerobic SBR system for nitrate, phosphate and COD removal from high-strength wastewater and diversity study of microbial communities
Low specific denitrification rate values in comparison to other heterotrophs, also supported enrichment of denitrifying phosphate accumulating organisms (DNPAOs) in the anoxic–aerobic sequencing batch reactor. Expand
Treatment of reverse osmosis concentrate by biological aerated filter
AbstractThe aim of this study is to employ the biological aerated filter (BAF) in the treatment of reverse osmosis (RO) concentrate received from reuse of wastewater treatment plant. BAF is known asExpand
Treatment of industrial effluents and assessment of their impact on the structure and function of microbial diversity in a unique Anoxic-Aerobic sequential batch reactor (AnASBR).
The new AnASBR was proved to be an efficient alternative system that is energy efficient with higher ease of operation for the treatment of different industrial effluents without fail. Expand
Nitrogen and phosphorus are essential to the growth of microorganism, plants, and animals, so that, they are known as major nutrients. The removal of nutrient before discharging treated wastewater isExpand
Determination of Kinetics Parameters in a Bench Scale BNR Treating Municipal Wastewater from Mosul City
In Iraq, due to the shortage in water supplies, needed for irrigation purposes at some areas, the existing wastewater treatment plants must be upgraded in order to achieve the nutrient removal forExpand


Control of COD/N ratio for nutrient removal in a modified membrane bioreactor (MBR) treating high strength wastewater.
Results showed that above 95.0% removal efficiencies of organic matter were achieved; indicating COD removal was irrespective of COD/N ratio. Expand
Anoxic biological phosphorus uptake and the effect of excessive aeration on biological phosphorus removal in the A2O process
Abstract The occurrence of denitrifying phosphate accumulating organisms (DNPAOs) and the contribution of DNPAOs to biological nutrient removal performance were investigated in a bench-scale A2OExpand
Effect of influent COD/N ratio on biological nitrogen removal (BNR) from high-strength ammonium industrial wastewater
The effect of influent COD/N ratio on biological nitrogen removal (BNR) from high-strength ammonium industrial wastewater was investigated. Experiments were conducted in a modified Ludzack–EttingerExpand
Characteristics of anoxic phosphorus removal in sequence batch reactor.
It could be concluded that increasing MLSS of the DEPHANOX system might shorten the reaction time of phosphorus release and anoxic phosphorus uptake, however, excessive MLSS might reduce the specific denitrifying rate. Expand
Simultaneous COD and nitrogen removal in a micro-aerobic granular sludge reactor for domestic wastewater treatment
Abstract The study on the integrated COD and nitrogen removal from domestic wastewater was carried out in a micro-aerobic granular sludge reactor. The influences of oxygen flux, hydraulic retentionExpand
Development of denitrifying and methanogenic activities in USB reactors for the treatment of wastewater : Effect of COD/N ratio
Abstract Nitrification–denitrification is the traditional biological process for nitrogen removal from wastewaters. During its second step, denitrification, nitrate formed during nitrification isExpand
Denitrification of high nitrate concentration wastewater using alternative carbon sources.
The use of different organic carbon sources in the denitrification of wastewater containing 2500 mg nitrates/L in a SBR was studied and the lowest value was obtained using the lactic acid-rich residue. Expand
Assessing the feasibility of achieving biological nutrient removal from wastewater at an Irish food processing factory.
This work showed that biological nutrient removal could be successfully applied to treatment of food industry wastewaters. Expand
Interaction of denitrification and P removal in anoxic P removal systems
Abstract This paper compares municipal wastewater (MWW) as a carbon source with other volatile fatty acids (VFAs) such as acetic acid, propionic acid and butyric acid in biological nutrient removalExpand
Denitrification behaviour in biological excess phosphorus removal activated sludge systems
Abstract A literature review of denitrification behaviour in biological excess phosphorus removal (BEPR) activated sludge systems was performed. Wentzel et al. (1989a,b) ( Wat. S.A. , 15, 71–88; Wat.Expand