Zeolite porous biological filter (ZPBF) was prepared using mixed cement, raw zeolite, and aluminum powder through optimization experiment and used as a novel filter medium in biological aerated filter (BAF). The properties of the ZPBF were analyzed by scanning electron microscopy (SEM), and porosimetry. The results show that ZPBF has a large BET-N2 (59.54m2/g) and average pore diameter (11.92nm) as well as a high porosity (29.55%). In addition, the uniform and interconnected pores in ZPBF made it suitable for the microbial growth. In order to prove the feasibility of the use of ZPBF in BAF, ZPBF used in the BAF were investigated for city wastewater treatment. Thus, intermittent dynamic experiments were conducted, the intermittent operation cycle included adsorption, biological regeneration, and drip washing ZPBF. Until concentration of NH4+-N was more than 1.5mg/L of effluent standards, water in ZPBF-BAF was firstly emptied. The results show that NH4+-N average removal was 87% and TN average removal was 60% at the blast for 24h and 5d of continuous operation period. The results show that the effluent water could comply with the first grade B in "Discharge Standard of Water Pollutants for Bei Jing city".
Zhang M, Liu G, Song K, et al. Biological treatment of 2, 4, 6-trinitrotoluene (TNT) red water by immobilized anaerobic-aerobic microbial filters[J]. Chemical Engineering Journal, 2015, 259:876-884.
[8]
Hasan H A, Abdullah S R S, Kamarudin S K, et al. Effective curves of completing simultaneous ammonium and manganese removal in polluted water using a biological aerated filter[J]. Journal of Industrial and Engineering Chemistry, 2015,30:153-159.
Tao C, Peng T, Feng C, et al. The feasibility of an up-flow partially aerated biological filter (U-PABF) for nitrogen and COD removal from domestic wastewater[J]. Bioresource Technology, 2016,218:307-317.
Chen Y, Wang L, Ma F, et al. Tracking composition of microbial communities for simultaneous nitrification and denitrification in polyurethane foam[J]. Water Science and Technology, 2014,69(9):1788-1797.
[19]
Bao T, Chen T, Wille M L, et al. Synthesis, application and evaluation of non-sintered zeolite porous filter (ZPF) as novel filter media in biological aerated filters (BAFs)[J]. Journal of Environmental Chemical Engineering, 2016,4(3):3374-3384.
[20]
Karakurt C, Kurama H, Topcu I B. Utilization of natural zeolite in aerated concrete production[J]. Cement and Concrete Composites, 2010,32(1):1-8.
[21]
Mazloomi F, Jalali M. Ammonium removal from aqueous solutions by natural Iranian zeolite in the presence of organic acids, cations and anions[J]. Journal of Environmental Chemical Engineering, 2016,4(1):240-249.
[22]
De Kock T, Boone M A, De Schryver T, et al. A pore-scale study of fracture dynamics in rock using X-ray micro-CT under ambient freeze-thaw cycling[J]. Environmental science & technology, 2015,49(5):2867-2874.
[23]
Bao T, Chen T, Wille M L, et al. Performance and characterization of a non-sintered zeolite porous filter for the simultaneous removal of nitrogen and phosphorus in a biological aerated filter (BAF)[J]. RSC Advances, 2016,6(55):50217-50227.
[24]
Feng Y, Yu Y, Qiu L, et al. Impact of sorption functional media (SFM) from zeolite tailings on the removal of ammonia nitrogen in a biological aerated filter[J]. Journal of industrial and engineering chemistry, 2015,21:704-710.
[25]
Feng Y, Wang X, Qi J, et al. Production of Red Mud Particle Electrodes (RMPEs) and Its Performance Investigation in a Biological Aerated Filter Coupled with a Three-Dimensional Particle Electrode Reactor (BAF-TDE)[J]. Industrial & Engineering Chemistry Research, 2015,54(26):6641-6648.
[26]
Fu Z, Zhang Y, Wang X. Textiles wastewater treatment using anoxic filter bed and biological wriggle bed-ozone biological aerated filter[J]. Bioresource technology, 2011,102(4):3748-3753.
[27]
Zou J, Xu G, Pan K, et al. Nitrogen removal and biofilm structure affected by COD/NH4+-N in a biofilter with porous sludge-ceramsite[J]. Separation & Purification Technology, 2012, 94(24):9-15.
[28]
Han M, Zhao Z, Cui F, et al. Pretreatment of contaminated raw water by a novel double-layer biological aerated filter for drinking water treatment[J]. Desalination and Water Treatment, 2012,37(1-3):308-314.
[29]
Hu H, Han H, Wang W, et al. Effect of coal gangue-fly ash ceramic (CFC) media on municipal wastewater treatment in a pre-denitrification biological aerated filter[J]. Desalination and Water Treatment, 2011,31(1-3):372-378.
[30]
Li W, Zeng L, Kang Y, et al. A solid waste, crashed autoclaved aerated concrete, as a crystalline nucleus for the removal of low concentration of phosphate[J]. Desalination and Water Treatment, 2016,57(30):14169-14177.
[31]
Feng Y, Yu Y, Qiu L, et al. The characteristics and effect of grain-slag media for the treatment of phosphorus in a biological aerated filter (BAF)[J]. Desalination and Water Treatment, 2012, 47(1-3):258-265.
