An innovative membrane bioreactor and packed-bed biofilm reactor combined system for shortcut nitrification-denitrification

Zhang, Yunxia; Jin-song, Zhang; Yuan, Shouzhi

doi:10.1016/s1001-0742(08)62309-8

Cited by 31 publications

(11 citation statements)

References 24 publications

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“…We have observed that the membrane permeability decreases with increasing SMP concentration, which is in agreement with previous literature [2,[33][34][35], yet, there was a weak correlation between the EPS content in the sludge and the membrane permeability, which has also been documented [31,[36][37][38].…”

Section: Effects Of Aeration Rate On Membrane Foulingsupporting

confidence: 92%

Optimizing aeration rates for minimizing membrane fouling and its effect on sludge characteristics in a moving bed membrane bioreactor

Rahimi

Torabian

Mehrdadi

et al. 2011

Journal of Hazardous Materials

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Section: Effects Of Aeration Rate On Membrane Foulingsupporting

confidence: 92%

Optimizing aeration rates for minimizing membrane fouling and its effect on sludge characteristics in a moving bed membrane bioreactor

Rahimi

Torabian

Mehrdadi

et al. 2011

Journal of Hazardous Materials

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“…[6,7] The traditional biological technologies for nitrogen removal require a long hydraulic retention time (HRT) because of the low removal rate. [8] In the past few years, many novel and efficient biological technologies for nitrogen removal have been developed, including anaerobic ammonium oxidation (Anammox), [9][10][11] the signalreactor for high activity ammonia removal over nitrite (SHARON), [12,13] shortcut nitrification-denitrification [14,15] and completely autotrophic nitrogen removal over nitrite (Canon). [16] However, operational cost and low removal rate remain the main problems.…”

Section: Introductionmentioning

confidence: 99%

Effective and characteristics of anthraquinone-2,6-disulfonate (AQDS) on denitrification byParacoccus versutussp.GW1

Guo

Lian

et al. 2013

Environmental Technology

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The effects of anthraquinone-2,6-disulfonate (AQDS) on microbial populations and the biocatalysing characteristics of AQDS on denitrifying strain GW1 are discussed. The results showed that microbial population abundances were 30, 6, 12 and 18% during the different periods (1st, 5th, 10th and 20th days). Strain GW1 utilized AQDS as an electron acceptor in the respiration chain and reduced AQDS to hydroquinone (QH2). The nitrate removal efficiency of strain GW1 was increased 1.14-1.63 fold with 0.04-0.32 mmol/L AQDS. A linear correlation was found between the nitrate removal reaction constant k[gNO3(-)- N/(gVSS x d)] (where VSS is volatile suspended solids) and AQDS concentration (CAQDS), which was k = 19.332 C(AQDS) + 11.115 (R2 = 0.9749). The stabilized oxidation-reduction potential (ORP) values with AQDS were lower 22-92 mv than the control during the denitrification process. The concentration of nitrite sequentially accumulated up to around 250 mg/L when nitrate have removed completely. The results suggested that AQDS as redox mediator was capable of biocatalysing the nitrate and nitrite removal rate.

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“…During this time, was accumulated in NH2O•HCl medium, while N2 was detected about 32-35 % of the concentration of total nitrogen. Based on the nitrogen balance 23 , other nitrogen was utilized as intracellular nitrogen. These indicated that A60 could utilize four nitrogen sources and converted them to N2, performed powerful simultaneous nitrification-denitrification ability.…”

Section: Study On Nitrification Characteristics Of A60 Under Differenmentioning

confidence: 99%

Isolation of Nitrification-Denitrification Fungus for Removal of Ammonium-Nitrogen

Lv¹,

Niu²,

Liu³

et al. 2014

Asian J. Chem.

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Coking wastewater contains high concentration of nitrogen compounds and carbon materials 1. Especially, with increasing of ammonium-nitrogen concentration in cokes wastewater, numerous environmental and health problems will be serious if not treated effectively 2. Nitrogen removal is an important aspect of present wastewater treatment system. The most common, efficient and cost effective methods involve heterotrophic nitrifiers and aerobic denitrifiers to remove ammoniumnitrogen 3. Recently, studies have highlighted the existence of some bacteria such as Paracoccus denitrificans 4 , Pseudomonas denitrificans 5 , Bacterium 6 and Alcaligenes faecalis 7. However, studies on these bacteria have focused on a low ammonium concentration while research on the treatment of high-strength ammonium wastewater is rare 8. Compared with bacteria, filamentous fungi are adsorbed with each other, easy to be got and immobilized after cultivating 9. Fungi, such as Phanerochaete chrysosporium 10 and Penicillium, have made contribution to remove metalion, organic compound and pigments in wastewater. But available fungi used to remove high-strength ammonium-nitrogen are few 11. Based on above, further research is focused on screening for fungi with high-strength ammonium removal efficiency. In this study, a Fusarium sp was isolated from cokes wastewater

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An innovative membrane bioreactor and packed-bed biofilm reactor combined system for shortcut nitrification-denitrification

Cited by 31 publications

References 24 publications

Optimizing aeration rates for minimizing membrane fouling and its effect on sludge characteristics in a moving bed membrane bioreactor

Optimizing aeration rates for minimizing membrane fouling and its effect on sludge characteristics in a moving bed membrane bioreactor

Effective and characteristics of anthraquinone-2,6-disulfonate (AQDS) on denitrification byParacoccus versutussp.GW1

Isolation of Nitrification-Denitrification Fungus for Removal of Ammonium-Nitrogen

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