生物接触氧化-滴滤工艺处理水产养殖废水的效能研究
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摘要
为了高效处理水产养殖废水,采用了生物接触氧化-滴滤(以陶粒为滤料)组合工艺,并对该组合工艺的处理效果进行考察。以生物接触氧化池中组合填料的密度、停留时间以及滴滤的水力负荷作为研究对象,通过对CODMn、氨氮、TN等参数的分析,得到了该组合工艺的处理效果。研究表明:当工艺中组合填料密度(组合填料与废水的体积比)为9.24%,生物接触氧化水力停留时间为0.85 h,滴滤的水力负荷为27.2 m3/(m2·d)时,CODMn、氨氮、TN、TP的去除率可分别高达55.31%、34.31%、57.64%和20.25%。证明采用该组合工艺净化水产养殖废水具有可行性。
In order to realize effective treatment of aquaculture wastewater,a combined process of biological contact oxidation and ordinary biofilter( filled with haydite) was constructed,and the decontamination efficiency was investigated. With constant influent concentration,research on the density and the hydraulic retention time of combined filler in biological contact oxidation,and hydraulic loading of trickling filter was carried out. Through analyzing CODMn,ammonia,total nitrogen,the treatment effect of the combined process were obtained. The results showed that when volume ratio of combined filler and wastewater was 9. 24%,hydraulic retention time was 0. 85 h,hydraulic loading was 27. 2 m3/( m2·d),the removal rate of CODMn,ammonia,total nitrogen and total phosphorus could be as high as 55. 31%,34. 31%,57. 64% and 20. 25%,respectively. This novel combined process proved to be practical in treating aquaculture wastewater.
In order to realize effective treatment of aquaculture wastewater,a combined process of biological contact oxidation and ordinary biofilter( filled with haydite) was constructed,and the decontamination efficiency was investigated. With constant influent concentration,research on the density and the hydraulic retention time of combined filler in biological contact oxidation,and hydraulic loading of trickling filter was carried out. Through analyzing CODMn,ammonia,total nitrogen,the treatment effect of the combined process were obtained. The results showed that when volume ratio of combined filler and wastewater was 9. 24%,hydraulic retention time was 0. 85 h,hydraulic loading was 27. 2 m3/( m2·d),the removal rate of CODMn,ammonia,total nitrogen and total phosphorus could be as high as 55. 31%,34. 31%,57. 64% and 20. 25%,respectively. This novel combined process proved to be practical in treating aquaculture wastewater.
引文
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[13]邱立平,马军,张立昕.水力停留时间对曝气生物滤池处理效能及运行特性的影响[J].环境污染与防治,2004,26(6):433-436.
[14]王业勤,李勤生.人造生物膜的脱氮作用[J].污染防治技术,2009,22(6):17-20.
[2]France S J,Nowak B F,Allan G L.The effects of nitrite on the short term growth of silver perch[J].Aquaculture,2000,183:9-103.
[3]Turcios Ariel,Papenbrock E.Sustainable treatment of aquaculture effluents-what can we learn from the past for the future[J].Sustainability,2014,2(6):836-856.
[4]Castine Sarah A,Mckinnon A.Wastewater treatment for landbased aquaculture:Improvements and value-adding alternatives in model systems from Austrilia[J].Aquaculture Environment Interaction,2013,3(4):285-300.
[5]Guerdat Todd C,Losordo Thomas M,Delong Dennis P.An evaluation of solid waste capture from recirculating aquaculture systems using a geotextile bag system with a flocculant-aid[J].Aquaculture Engineering,2013,54:1-8.
[6]Afonso M D,Borquez R.Nanofiltration of wastewaters from the fish meal industry[J].Desalination,2002,151:131-138.
[7]Afonso M D,Borquez R.Review of the treatment of seafood processing wastewaters and recovery of proteins therein by membrane separation processes:Prospects of the ultrafiltration of wastewaters from the fishmeal industry[J].Desalination,2002,142(1):29-45.
[8]Chao A C,Tzou L,Young C T.Proc.35th Industrial Waste Conf[R].Lafayette:Purdue Univ,1983:829-837.
[9]王凤祥,龙腾锐,郭劲松.活性污泥膨胀的影响因素及调控措施研究[J].重庆建筑大学学报,2007,29(1):118-121.
[10]刘军,王斌,潘登,等.好氧脱氮过程中脱氮途径的初探[J].工业水处理,2003,23(11):53-55.
[11]Kulkarni P.Effect of shock and mixed loading on the performance of SND based sequencing batch reactors(SBR)degrading nitrophenols[J].Water Research,2012,46(7):2405-2414.
[12]Pujol R,Lemmel H,Gousailles M.A key point of nitrification in an up flow biofiltration reactor[J].Wat Sci Tech,1998,38(3):43-49.
[13]邱立平,马军,张立昕.水力停留时间对曝气生物滤池处理效能及运行特性的影响[J].环境污染与防治,2004,26(6):433-436.
[14]王业勤,李勤生.人造生物膜的脱氮作用[J].污染防治技术,2009,22(6):17-20.
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