固定化污泥与固定化小球藻共培养去除污水氮磷研究
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摘要
为减少污水处理装置排出水中氮元素(N)、磷元素(P)的含量,减轻收纳土地和水体的污染,降低水华暴发的频率,本研究采用海藻酸钠分别固定小球藻和活性污泥,并以不同比例组合成共培养体系,处理经Up-flow Anaerobic Sludge Bed/Blanket(USAB)工艺处理后的真实畜禽养殖废水,同时对比传统悬浮细胞方法对N、P的去除效果。结果表明,在72 h内,较低固定化污泥/固定化小球藻初始比例(R=1/3)下的共培养体系对N、P有较好的去除效率;48 h时NH_~+4-N去除率为83.2%,PO_4~(3-)-P去除率为95.1%;3个半连续批次处理中,NH_~+4-N和PO_4~(3-)-P的去除率保持相对稳定。以上结果说明藻类能促进N、P元素的去除,固定化工艺可提升去除效率,具有应用于畜禽养殖废水处理的潜力。
In order to reduce the content of nitrogen( N) and phosphorus( P) in the discharge water of sewage treatment plant,reduce the pollution of the storage land and water body,and reduce the frequency of water blooms,this study used sodium alginate to fix Chlorella and active pollution and the mud was combined into a co-culture system in different proportions to treat the real livestock and poultry aquaculture wastewater treated by the Up-flow Anaerobic Sludge Bed/Blanket( USAB) process,and the removal effect of N and P by the traditional suspension cell method was compared. The results showed that the co-culture system with lower initial immobilized sludge/immobilized Chlorella( R = 1/3) had better removal efficiency for N and P within 72 h. Within 48 h,the removal rate of NH_~+4-N was83.2%,and the removal rate of PO_4~(3-)-P was 95. 1%. The removal rates of NH_~+4-N and PO_4~(3-)-P remained relatively stable in three semi-continuous batch treatments. The above results indicate that algae can promote the removal of N and P elements,and the immobilization process can improve the removal efficiency and has the potential to be applied to the treatment of livestock and poultry aquaculture wastewater.
In order to reduce the content of nitrogen( N) and phosphorus( P) in the discharge water of sewage treatment plant,reduce the pollution of the storage land and water body,and reduce the frequency of water blooms,this study used sodium alginate to fix Chlorella and active pollution and the mud was combined into a co-culture system in different proportions to treat the real livestock and poultry aquaculture wastewater treated by the Up-flow Anaerobic Sludge Bed/Blanket( USAB) process,and the removal effect of N and P by the traditional suspension cell method was compared. The results showed that the co-culture system with lower initial immobilized sludge/immobilized Chlorella( R = 1/3) had better removal efficiency for N and P within 72 h. Within 48 h,the removal rate of NH_~+4-N was83.2%,and the removal rate of PO_4~(3-)-P was 95. 1%. The removal rates of NH_~+4-N and PO_4~(3-)-P remained relatively stable in three semi-continuous batch treatments. The above results indicate that algae can promote the removal of N and P elements,and the immobilization process can improve the removal efficiency and has the potential to be applied to the treatment of livestock and poultry aquaculture wastewater.
引文
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[15]ZHU L,WANG Z,SHU Q,et al.Nutrient removal and biodiesel production by integration of freshwater algae cultivation with piggery wastewater treatment[J].Water Research,2013,47(13):4294-4302.
[16]MUJTABA G,LEE K.Advanced treatment of wastewater using symbiotic co-culture of microalgae and bacteria[J].Journal of the Korean Industrial and Engineering Chemistry,2016,27(1):1-9.
[17]牟帅,梁大伟,姜海波.气提脱氨处理工艺在高氨氮污水处理中的应用[J].地下水,2018,40(5):77-78.
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[19]RUIZ-MARTINEZ A,GARCIA N M,ROMERO I,et al.Microalgae cultivation in wastewater:Nutrient removal from anaerobic membrane bioreactor effluent[J].Bioresource Technology,2012,126:247-253.
[20]王旭阳,赵乐军.水解酸化在城市综合废水处理应用中的小试研究[J].山西建筑,2018,44(29):136-137.
[21]贾丹,李卓然,钟志国.pH对新型后置反硝化系统生物脱氮除磷的影响[J].水处理技术,2018,44(5):79-83.
[22]陈文玲,王如意,李咏梅.富磷污泥厌氧发酵过程中乙酸浓度对磷释放的影响[J].中国环境科学,2015,35(6):1763-1770.
[2]李大荣,叶姜瑜,杨平,等.畜禽养殖废水处理现状研究---以渝北区某养猪场为例[J].环境影响评价,2018,40(4):80-84.
[3]张郁婷.水生植物对养殖废水处理效果比较研究[D].长沙:中南林业科技大学,2018.
[4]吴晓莉.人工湿地植物筛选及其对畜禽养殖废水的净化研究[D].雅安:四川农业大学,2010.
[5]宋瑞雪.能源微藻的应用[J].生物化工,2018,4(4):132-133,136.
[6]刘艺琳,陈弘培,龚世禹,等.微藻油的提取与功能研究进展[J].食品工业科技,2019,40(5):333-337,342.
[7]吕锡武,李峰,稻森悠平,等.氨氮废水处理过程中的好氧反硝化研究[J].给水排水,2000,26(4):17-20.
[8]韩云婷,王拯,方晓航,等.改性给水污泥对高磷酸盐废水的吸附研究[J].环境工程学报,2011,5(4):772-776.
[9]JI X,JING M,ZHANG J,et al.The interactions of algae-bacteria symbiotic system and its effects on nutrients removal from synthetic wastewater[J].Bioresource Technology,2018,247:44-50.
[10]SHEN Y,GAO J,LI L.Municipal wastewater treatment via co-immobilized microalgal-bacterial symbiosis:Microorganism growth and nutrients removal[J].Bioresource Technology,2017,243:905-913.
[11]MUJTABA G,LEE K.Treatment of real wastewater using co-culture of immobilized Chlorella vulgaris and suspended activated sludge[J].Water Research,2017,120:174-184.
[12]DE-BASHAN L E,HERNANDEZ J P,MOREY T,et al.Microalgae growth promoting bacteria as"helpers"for microalgae:A novel approach for removing ammonium and phosphorus from municipal wastewater[J].Water Research,2004,38(2):466-474.
[13]何淑雯,于菲,刘玉,等.广州市谷河黑臭评价及其与裸藻丰度和生物量相关性分析[J].环境科学学报,2019,39(3):696-705.
[14]MUJTABA G,RIZWAN M,KIM G,et al.Removal of nutrients and COD through co-culturing activated sludge and immobilized Chlorella vulgaris[J].Chemical Engineering Journal,2018,343:155-162.
[15]ZHU L,WANG Z,SHU Q,et al.Nutrient removal and biodiesel production by integration of freshwater algae cultivation with piggery wastewater treatment[J].Water Research,2013,47(13):4294-4302.
[16]MUJTABA G,LEE K.Advanced treatment of wastewater using symbiotic co-culture of microalgae and bacteria[J].Journal of the Korean Industrial and Engineering Chemistry,2016,27(1):1-9.
[17]牟帅,梁大伟,姜海波.气提脱氨处理工艺在高氨氮污水处理中的应用[J].地下水,2018,40(5):77-78.
[18]DE-BASHAN L E,MORENO M,HERNANDEZ J P,et al.Removal of ammonium and phosphorus ions from synthetic wastewater by the microalgae Chlorella vulgaris coimmobilized in alginate beads with the microalgae growthpromoting bacterium Azospirillum brasilense[J].Water Research,2002,36(12):2941-2948.
[19]RUIZ-MARTINEZ A,GARCIA N M,ROMERO I,et al.Microalgae cultivation in wastewater:Nutrient removal from anaerobic membrane bioreactor effluent[J].Bioresource Technology,2012,126:247-253.
[20]王旭阳,赵乐军.水解酸化在城市综合废水处理应用中的小试研究[J].山西建筑,2018,44(29):136-137.
[21]贾丹,李卓然,钟志国.pH对新型后置反硝化系统生物脱氮除磷的影响[J].水处理技术,2018,44(5):79-83.
[22]陈文玲,王如意,李咏梅.富磷污泥厌氧发酵过程中乙酸浓度对磷释放的影响[J].中国环境科学,2015,35(6):1763-1770.