基于藻菌共生体系的SBR处理模拟生活污水研究
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摘要
在序批式活性污泥反应器(SBR)中接种入微藻培养形成藻菌共生体系,通过控制光照、曝气强度2个关键参数,对不同条件下藻菌共生SBR形成过程中的生物量变化、营养物质的去除效率、混合污泥性能及组分进行了研究。结果表明,在低光照强度(光量子通量密度92.27μmol/(m~2·s))和低曝气强度(0.2 L/min)下形成的藻菌共生体系的综合性能最好,达到稳定状态后反应器对COD、TP、NH_4~+-N、TN的去除率分别达到98.23%、98.00%、99.95%、94.47%。同时,藻菌共生反应器中的混合污泥具有良好的沉降性能,反应器污泥产率降低10.56%,剩余污泥含氮量提高,并伴随有微藻的产出,是一种新型的、具有营养物质回收能力的污水处理技术。
The chlorella was inoculated into the sequencing batch reactor(SBR) to form the algae-bacteria symbiotic system. By controlling the two key parameters of illumination and aeration intensity, the biomass change, the removal efficiency of nutrients, the performance and composition of mixed sludge during the formation of the algae-bacteria symbiotic SBR under different conditions were studied. The results showed that, it was determined that the algae-bacteria symbiotic system which formed under the low light intensity(photosynthetic photon flux density 92.27 μmol/(m~2·s)) and the low aeration intensity of 0.2 L/min had the best comprehensive performance. After reaching a stable state, the removal rate of COD, TP, NH_4~+-N and TN was 98.23%,98.00%, 99.95% and 94.47%, respectively. Meanwhile, the mixed sludge in the reactor had the good sedimentation performance, the sludge yield of the reactor was reduced by 10.56%, the nitrogen content in excess sludge was increased with the production of microalgae, it is a new sewage treatment technology with nutrient recovery capability.
The chlorella was inoculated into the sequencing batch reactor(SBR) to form the algae-bacteria symbiotic system. By controlling the two key parameters of illumination and aeration intensity, the biomass change, the removal efficiency of nutrients, the performance and composition of mixed sludge during the formation of the algae-bacteria symbiotic SBR under different conditions were studied. The results showed that, it was determined that the algae-bacteria symbiotic system which formed under the low light intensity(photosynthetic photon flux density 92.27 μmol/(m~2·s)) and the low aeration intensity of 0.2 L/min had the best comprehensive performance. After reaching a stable state, the removal rate of COD, TP, NH_4~+-N and TN was 98.23%,98.00%, 99.95% and 94.47%, respectively. Meanwhile, the mixed sludge in the reactor had the good sedimentation performance, the sludge yield of the reactor was reduced by 10.56%, the nitrogen content in excess sludge was increased with the production of microalgae, it is a new sewage treatment technology with nutrient recovery capability.
引文
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[3]NAJM Y,JEONG S,LEIKNES T.Nutrient utilization and oxygen production by Chlorella vulgaris in a hybrid membrane bioreactor and algal membrane photobioreactor system[J].Bioresource Technology,2017,237:64-71.
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[9]王荣昌,程霞,曾旭.污水处理中菌藻共生系统去除污染物机理及其应用进展[J].环境科学学报,2018,38(1):13-22.
[10]张正红,何文辉,向天勇,等.菌藻共生序批式生物膜反应器处理猪场沼液[J].水处理技术,2018,44(1):118-122.
[11]吕娟,陈银广,顾国维.间歇曝气SBR工艺脱氮除磷试验研究[J].环境污染与防治,2007,29(8):608-611.
[12]WANG L,LIU J,ZHAO Q,et al.Comparative study of wastewater treatment and nutrient recycle via activated sludge,microalgae and combination systems[J].Bioresour Technol,2016,211:1-5.
[13]APHA.Standard methods for the examination of water and waste water[M].Washington:American Public Health Association,2005.
[14]张展,刘建国.微藻高密度培养中的生长指标和适应机制[J].渔业科学进展,2003,24(4):36-43.
[15]TANG C C,ZUO W,TIAN Y,et al.Effect of aeration rate on performance and stability of algal-bacterial symbiosis system to treat domestic wastewater in sequencing batch reactors[J].Bioresource Technology,2016,222:156-164.
[16]TANG T,FADAEI H,HU Z.Rapid evaluation of algal and cyanobacterial activities through specific oxygen production rate measurement[J].Ecological Engineering,2014,73:439-445.
[17]贺雪濛,丁丽丽,张璐璐,等.氮磷失衡下膨胀污泥性能及膨胀菌群落结构变化[J].环境科学,2018,39(4):1782-1793.
[18]尹军,王雪峰,王建辉,等.SBR工艺活性污泥比耗氧速率与控制参数的关系[J].环境污染与防治,2007,29(7):481-483.
[19]何秋来,王弘宇,杨小俊,等.SBR不同进水中反硝化除磷颗粒污泥的培养[J].环境科学学报,2016,36(1):134-141.
[20]TONTTI T,POUTIAINEN H,HEINONEN-TANSKI H.Efficiently treated sewage sludge supplemented with nitrogen and potassium is a good fertilizer for cereals[J].Land Degradation&Development,2017,28(2):742-751.
[21]丘锦荣,郭晓方,卫泽斌,等.城市污泥农用资源化研究进展[J].农业环境科学学报,2010,29(S1):108-109.
[22]王新,周启星,陈涛,等.污泥土地利用对草坪草及土壤的影响[J].环境科学,2003,24(2):50-53.
[2]RAMANAN R,KIM B H,CHO D H,et al.Algae-bacteria interactions:Evolution,ecology and emerging applications[J].Biotechnology Advances,2016,34(1):14-29.
[3]NAJM Y,JEONG S,LEIKNES T.Nutrient utilization and oxygen production by Chlorella vulgaris in a hybrid membrane bioreactor and algal membrane photobioreactor system[J].Bioresource Technology,2017,237:64-71.
[4]YE J,LIANG J,WANG L,et al.Operation optimization of a photosequencing batch reactor for wastewater treatment:Study on influencing factors and impact on symbiotic microbial ecology[J].Bioresource Technology,2017,252:7-13.
[5]王爱丽,宋志慧,王福明.藻菌混合固定化及其对污水的净化[J].环境污染与防治,2005,27(9):654-657.
[6]孙霓,左薇,张军,等.污泥停留时间对菌藻共生系统水处理效能的影响研究[J].水处理技术,2017,43(1):52-56.
[7]CHISTI Y.Biodiesel from microalgae[J].Biotechnology Advances,2007,25(3):294-306.
[8]巫小丹,阮榕生,王辉,等.菌藻共生系统处理废水研究现状及发展前景[J].环境工程,2014,32(3):34-37.
[9]王荣昌,程霞,曾旭.污水处理中菌藻共生系统去除污染物机理及其应用进展[J].环境科学学报,2018,38(1):13-22.
[10]张正红,何文辉,向天勇,等.菌藻共生序批式生物膜反应器处理猪场沼液[J].水处理技术,2018,44(1):118-122.
[11]吕娟,陈银广,顾国维.间歇曝气SBR工艺脱氮除磷试验研究[J].环境污染与防治,2007,29(8):608-611.
[12]WANG L,LIU J,ZHAO Q,et al.Comparative study of wastewater treatment and nutrient recycle via activated sludge,microalgae and combination systems[J].Bioresour Technol,2016,211:1-5.
[13]APHA.Standard methods for the examination of water and waste water[M].Washington:American Public Health Association,2005.
[14]张展,刘建国.微藻高密度培养中的生长指标和适应机制[J].渔业科学进展,2003,24(4):36-43.
[15]TANG C C,ZUO W,TIAN Y,et al.Effect of aeration rate on performance and stability of algal-bacterial symbiosis system to treat domestic wastewater in sequencing batch reactors[J].Bioresource Technology,2016,222:156-164.
[16]TANG T,FADAEI H,HU Z.Rapid evaluation of algal and cyanobacterial activities through specific oxygen production rate measurement[J].Ecological Engineering,2014,73:439-445.
[17]贺雪濛,丁丽丽,张璐璐,等.氮磷失衡下膨胀污泥性能及膨胀菌群落结构变化[J].环境科学,2018,39(4):1782-1793.
[18]尹军,王雪峰,王建辉,等.SBR工艺活性污泥比耗氧速率与控制参数的关系[J].环境污染与防治,2007,29(7):481-483.
[19]何秋来,王弘宇,杨小俊,等.SBR不同进水中反硝化除磷颗粒污泥的培养[J].环境科学学报,2016,36(1):134-141.
[20]TONTTI T,POUTIAINEN H,HEINONEN-TANSKI H.Efficiently treated sewage sludge supplemented with nitrogen and potassium is a good fertilizer for cereals[J].Land Degradation&Development,2017,28(2):742-751.
[21]丘锦荣,郭晓方,卫泽斌,等.城市污泥农用资源化研究进展[J].农业环境科学学报,2010,29(S1):108-109.
[22]王新,周启星,陈涛,等.污泥土地利用对草坪草及土壤的影响[J].环境科学,2003,24(2):50-53.