Combining simultaneous nitrification-endogenous denitrification and phosphorus removal with post-denitrification for low carbon/nitrogen wastewater treatment

Wang, Xiaoxia; Wang, Shuying; Zhao, Ji; Dai, Xian

doi:10.1016/j.biortech.2016.06.132

Cited by 92 publications

(20 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is estimated that the SND process utilizes 22%-40% less carbon and reduces sludge yield by 30% compared with conventional nitrification and denitrification systems [8]. Through the SND process, oxygen and NO 3 --N can fully be utilized as the alternate electron acceptors, which results in low DO [9,10]. Additionally, SND can be accomplished at neutral pH because it is self-buffering, with alkalinity produced during denitrification consumed during nitrification.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous nitrification and denitrification using a novel up-flow bio-electrochemical reactor

Tang¹,

Meng²,

Sheng³

et al. 2019

Desalination and Water Treatment

View full text Add to dashboard Cite

Nitrogen removal is a problem in the field of water treatment, especially in the presence of sulfate. Conventional nitrification and denitrification are usually carried out in two separate reactors. In addition, the effect of sulfate on hydrogenotrophic denitrification is not clear. In this study, simultaneous nitrification and denitrification (SND) for nitrogen removal from water was conducted using a single novel up-flow bio-electrochemical reactor (UBER). The influence of dissolved oxygen (DO) on nitrogen removal was investigated. When influent DO was 7.0-8.0 mg L-1 , a heterotrophic nitrification zone (with DO 3.2-5.5 mg L-1) and a hydrogenotrophic denitrification zone (with DO 1.6-4.2 mg L-1) were obtained within the reactor, and the removal rates of NH 4 +-N and TN reached more than 90%. The distribution of DO inside developing biofilms was measured using microelectrodes. When DO in the hydrogenotrophic denitrification zone was 2.9 mg L-1 , DO inside the biofilm was just 0.5 mg L-1. The effect of sulfate on hydrogenotrophic denitrification was studied by regulating the S/N ratio of influent water. Simultaneous removal of nitrate and sulfate can be achieved at low S/N, and the removal rates of nitrate and sulfate were ~80%. With increasing S/N ratio, sulfide produced by sulfate reduction inhibited both denitrification and further sulfate reduction.

show abstract

Section: Introductionmentioning

confidence: 99%

Simultaneous nitrification and denitrification using a novel up-flow bio-electrochemical reactor

Tang¹,

Meng²,

Sheng³

et al. 2019

Desalination and Water Treatment

View full text Add to dashboard Cite

show abstract

“…Intensive livestock breeding has caused a sharp increase of the yield of livestock and poultry manure both in China and many other countries worldwide ( Buelna et al., 2008 ; Maccari et al., 2016 ; Quan et al., 2016 ; Tigini et al., 2016 ). Pig manure is an organic nutrient sources, which has been widely utilized as organic fertilizer in agriculture.…”

Section: Introductionmentioning

confidence: 99%

“…Generally, compost and anaerobic digestion methods have been implemented for treating the pig manure containing heavy metals ( Marcato et al., 2008 ; Lu et al., 2015 ; Quan et al., 2016 ; Tigini et al., 2016 ). However, they show some limitations such as the heavy metals can just be fixed and the total amount of heavy metals is not reduced ( Lv et al., 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Bioleaching of heavy metals from pig manure with indigenous sulfur-oxidizing bacteria: effects of sulfur concentration

Wei

Liu

Liao

et al. 2018

Heliyon

View full text Add to dashboard Cite

The purpose of this work was to study the sulfur concentration on bioleaching of heavy metals from pig manure employing indigenous sulfur-oxidizing bacteria. Also, the variations in physicochemical properties of pig manure before and after bioleaching were investigated. The results showed that sulfur concentration significantly affected the rate of acidification, sulfate production and metal solubilization during pig manure bioleaching process. A Michaelis–Menten type equation was utilized to interpret the relationships between sulfur concentration, sulfate production and metal solubilization in the bioleaching process. The rates of metal solubilization during pig manure bioleaching were well described by a first order kinetic equation related to time. After 12 days of bioleaching, 93%–97% of Zn, 96%–98% of Mn and 48%–94% of Cu were leached out from pig manure, respectively. The metals remaining in the pig manure residual were mainly existed in stable forms. In addition, elemental analysis showed that bioleaching process could significantly modify the dewaterbility and organic composition of pig manure. However, fertility analysis found that 9.0%–19.1% of nitrogen, 68.5%–71.0% of phosphorus, 76.5%–78.8% of potassium and 47.5%–49.4% of the total organic carbon (TOC) were lost from pig manure in the bioleaching process. Therefore, bioleaching process used in this study could be applied to remove heavy metals effectively from the pig manure, but more detailed studies need to be done to decrease the nutrients loss from pig manure.

show abstract

“…Contudo, considerando-se a margem de erro, todas as remoções de DQO se encontram com valores próximos, evidenciando, assim, que todas as fases operacionais são satisfatórias para a remoção de matéria orgânica. Wang et al (2016), ao operarem um RSB, obtiveram eficiência de remoção média de 86,9% para a DQO, tendo a concentração efluente média equivalente a 41,5 mg.L -1 . Tais valores estão próximos aos obtidos nessa pesquisa.…”

Section: Remoção De Compostos Nitrogenadosunclassified

“…,He et al (2016) eWang et al (2016) descreveram sistemas operados em bateladas sequenciais eficientes na remoção biológica de nutrientes.Contudo, os RSB são mais vantajosos por apresentar a facilidade de equalização das vazões e cargas afluentes, principalmente em sistemas onde as flutuações horárias do esgoto bruto são conhecidas, visto que esses reatores absorvem essas variações quando se preenchem(IRVINE E RICHTER, 1976). De acordo com Irvine e Richter (1976), o RSB se destaca também, por apresentar um sistema que não tem interferências na etapa de sedimentação por problemas de curtoscircuitos existentes em sistemas de alimentação contínua, devido à entrada e saída de líquidos.…”

unclassified

Desempenho de reator de leito estruturado submetido à aeração intermitente, na remoção de nitrogênio e fósforo de esgoto sanitário utilizando glicerol fermentado como fonte de carbono

Lopes¹

View full text Add to dashboard Cite

Desempenho de reator de leito estruturado submetido à aeração intermitente, na remoção de nitrogênio e fósforo de esgoto sanitário utilizando glicerol fermentado como fonte de carbono VERSÃO CORRIGIDA São Carlos-SP 2017 ii iii JÉSSICA COSTA LOPES Desempenho de reator de leito estruturado submetido à aeração intermitente, na remoção de nitrogênio e fósforo de esgoto sanitário utilizando glicerol fermentado como fonte de carbono

show abstract

Combining simultaneous nitrification-endogenous denitrification and phosphorus removal with post-denitrification for low carbon/nitrogen wastewater treatment

Cited by 92 publications

References 33 publications

Simultaneous nitrification and denitrification using a novel up-flow bio-electrochemical reactor

Simultaneous nitrification and denitrification using a novel up-flow bio-electrochemical reactor

Bioleaching of heavy metals from pig manure with indigenous sulfur-oxidizing bacteria: effects of sulfur concentration

Desempenho de reator de leito estruturado submetido à aeração intermitente, na remoção de nitrogênio e fósforo de esgoto sanitário utilizando glicerol fermentado como fonte de carbono

Contact Info

Product

Resources

About