Bio‐augmented submerged membrane bioreactor as an effective application for treatment of biologically pretreated coal gasification wastewater

BACKGROUND Coal gasification wastewater (CGW) is the most important wastewater of the coal chemical industry and if disposed of without adequate treatment can cause serious environmental pollution. Membrane bioreactors (MBRs) have been widely used for high strength wastewater treatment; however, conventional MBRs potentially fail when the BOD/COD of the biologically pretreated CGW (BPCGW) is low. In the present study, strategies were employed to enhance MBR performance. RESULTS A long-term bio-augmented submerged membrane bioreactor (BSMBR) has been developed for treatment of BPCGW. With the optimal methanol dosage of 30%, hydraulic retention time (HRT) of 24 h, granular activated carbon (GAC) dosage of 5 g L−1 and NaHCO3 dosage ratio of 3:1 (amount NaHCO3 to NH4+-N ratio, mol:mol), the concentrations of COD, total phenols and NH4+-N reached 39, 23 and 11 mg L−1 with removal efficiencies of 74%, 40% and 46%, respectively. HRT of 24 h and GAC dosage of 5 g L−1 facilitated membrane fouling mitigation while the co-metabolism process with methanol speeded up membrane fouling. High NaHCO3 dosage ratio (≥2:1) promoted nitritation-type nitrification. CONCLUSION This study suggests that it is technically feasible to treat BPCGW by BSMBR, which can provide an environmentally acceptable way to further engineering application in coal chemical industries. © 2015 Society of Chemical Industry

[1]  Dong-Jin Kim,et al.  Effect of temperature and free ammonia on nitrification and nitrite accumulation in landfill leachate and analysis of its nitrifying bacterial community by FISH. , 2006, Bioresource technology.

[2]  Viatcheslav Freger,et al.  Chemical cleaning of UF membranes fouled by BSA , 2005 .

[3]  Fenglin Yang,et al.  Research on characteristics of aerobic granules treating petrochemical wastewater by acclimation and co-metabolism methods , 2011 .

[4]  Werner Fuchs,et al.  Treatment of textile waste water by membrane bioreactor and reuse , 2005 .

[5]  S. Soda,et al.  A novel control method for nitritation: The domination of ammonia-oxidizing bacteria by high concentrations of inorganic carbon in an airlift-fluidized bed reactor. , 2010, Water research.

[6]  Wei Wang,et al.  Enhanced anaerobic biodegradability of real coal gasification wastewater with methanol addition. , 2010, Journal of environmental sciences.

[7]  F. Meng,et al.  Effect of hydraulic retention time on membrane fouling and biomass characteristics in submerged membrane bioreactors , 2007, Bioprocess and biosystems engineering.

[8]  J. Gómez,et al.  Biological removal of p-cresol, phenol, p-hydroxybenzoate and ammonium using a nitrifying continuous-flow reactor. , 2012, Bioresource technology.

[9]  H. Ng,et al.  Submerged anaerobic membrane bioreactor for low-strength wastewater treatment: effect of HRT and SRT on treatment performance and membrane fouling. , 2011, Water research.

[10]  M. F. Md. Din,et al.  Characteristics and performance of aerobic granular sludge treating rubber wastewater at different hydraulic retention time. , 2014, Bioresource technology.

[11]  A. Camper,et al.  Combined effects of EPS and HRT enhanced biofouling on a submerged and hybrid PAC-MF membrane bioreactor. , 2013, Water research.

[12]  S. Okabe,et al.  Development and characterization of the partial nitrification aerobic granules in a sequencing batch airlift reactor. , 2013, Bioresource technology.

[13]  L. Young,et al.  Biodegradation of Phenol: Mechanisms and Applications , 2000 .

[14]  R. Nomen,et al.  Winery wastewater treatment for water reuse purpose: Conventional activated sludge versus membrane bioreactor (MBR): A comparative case study , 2012 .

[15]  H. Harms,et al.  Effect of organic matter on growth and cell yield of ammonia-oxidizing bacteria , 1982, Archives of Microbiology.

[16]  Hong-jun Han,et al.  Advanced treatment of biologically pretreated coal gasification wastewater using a novel anoxic moving bed biofilm reactor (ANMBBR)-biological aerated filter (BAF) system. , 2014, Bioresource technology.

[17]  Wei Wang,et al.  Removal of phenols, thiocyanate and ammonium from coal gasification wastewater using moving bed biofilm reactor. , 2011, Bioresource technology.

[18]  Alain Grasmick,et al.  Influence of supporting media in suspension on membrane fouling reduction in submerged membrane bior , 2011 .

[19]  H. H. Fang,et al.  Acidification of lactose in wastewater , 2001 .

[20]  J. Tay,et al.  Biodegradation of p-nitrophenol by aerobic granules in a sequencing batch reactor. , 2006, Environmental science & technology.

[21]  S Vigneswaran,et al.  Performance of submerged membrane bioreactor (SMBR) with and without the addition of the different particle sizes of GAC as suspended medium. , 2013, Bioresource technology.

[22]  Aline F Viero,et al.  Is hydraulic retention time an essential parameter for MBR performance? , 2008, Journal of hazardous materials.

[23]  A. Drews,et al.  Recent advances in membrane bioreactors (MBRs): membrane fouling and membrane material. , 2009, Water research.

[24]  Chunyan Xu,et al.  Advanced treatment of biologically pretreated coal gasification wastewater by a novel integration of heterogeneous Fenton oxidation and biological process. , 2015, Bioresource technology.

[25]  G. L. Sant'anna,et al.  The use of polyetherimide hollow fibres in a submerged membrane bioreactor operating with air backwashing , 2007 .

[26]  Yong Cheol Hong,et al.  Syngas production from gasification of brown coal in a microwave torch plasma , 2011 .

[27]  G. De Gioannis,et al.  Acetate-fed aerobic granular sludge for the degradation of 4-chlorophenol. , 2009, Journal of hazardous materials.

[28]  Xiao-yan Li,et al.  Membrane bioreactor for the drinking water treatment of polluted surface water supplies. , 2003, Water research.

[29]  Qian Zhao,et al.  Effect of alkalinity on nitrite accumulation in treatment of coal chemical industry wastewater using moving bed biofilm reactor. , 2014, Journal of environmental sciences.

[30]  Javier Lafuente,et al.  Inorganic carbon limitations on nitrification: experimental assessment and modelling. , 2007, Water research.

[31]  Hong-jun Han,et al.  Heterogeneous catalytic ozonation of biologically pretreated Lurgi coal gasification wastewater using sewage sludge based activated carbon supported manganese and ferric oxides as catalysts. , 2014, Bioresource technology.

[32]  H. Zhan,et al.  The microorganism community of pentachlorophenol (PCP)-degrading coupled granules. , 2009, Water science and technology : a journal of the International Association on Water Pollution Research.

[33]  Xin-Hua Wang,et al.  Aerobic granulation for nitrogen removal via nitrite in a sequencing batch reactor and the emission of nitrous oxide. , 2011, Bioresource technology.

[34]  Herbert H. P. Fang,et al.  Effect of HRT on mesophilic acidogenesis of dairy wastewater , 2000 .

[35]  M. Balakrishnan,et al.  Performance enhancement with powdered activated carbon (PAC) addition in a membrane bioreactor (MBR) treating distillery effluent. , 2009, Journal of hazardous materials.

[36]  Hong-jun Han,et al.  Treatment of coal gasification wastewater by membrane bioreactor hybrid powdered activated carbon (MBR–PAC) system. , 2014, Chemosphere.

[37]  Wenying Chen,et al.  Clean coal technology development in China , 2010 .