低碳源条件下BSBR工艺磷酸盐强化吸收影响因素分析

陈越; 潘杨; 倪敏; 黄勇; 李大鹏; 毕贞; 张星宇; 温林霄

doi:10.13205/j.hjgc.202209009

低碳源条件下BSBR工艺磷酸盐强化吸收影响因素分析

doi: 10.13205/j.hjgc.202209009

陈越¹,
潘杨^1,2, ,,
倪敏¹,
黄勇^1,2,
李大鹏^1,2,
毕贞^1,2,
张星宇¹,
温林霄¹

1. 苏州科技大学环境科学与工程学院, 江苏苏州 215009;
2. 城市生活污水资源化利用技术国家地方联合工程实验室, 江苏苏州 215009

基金项目:

江苏省研究生科研创新计划(KYCX20_2777)

国家自然科学基金项目(51778390,51938010)

详细信息

作者简介:
陈越(1996-),女,硕士研究生,主要研究方向为水污染控制与理论。2662867515@qq.com

通讯作者:
潘杨(1972-),男,教授,主要研究方向环境工程(水污染控制)。panyang863@sina.com

计量
- 文章访问数: 292
- HTML全文浏览量: 40
- PDF下载量: 23
- 被引次数: 0
出版历程
- 收稿日期: 2021-08-26
- 网络出版日期: 2022-11-09

ANALYSIS OF INFLUENCING FACTORS OF PHOSPHATE ENHANCED ABSORPTION IN BSBR PROCESS UNDER LOW CARBON SOURCE CONDITIONS

CHEN Yue¹,
PAN Yang^{1,2
, ,},
NI Min¹,
HUANG Yong^1,2,
LI Da-peng^1,2,
BI Zhen^1,2,
ZHANG Xing-yu¹,
WEN Lin-xiao¹

1. School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China;
2. National & Local Joint Engineering Laboratory for Municipal Sewage Resource Utilization Technology, Suzhou 215009, China

摘要

摘要: 相较于传统强化生物除磷工艺通过测流实现污泥磷酸盐的富集和回收,生物膜法可对废水中的磷酸盐进行高效同步去除和富集,具有应用潜力。针对生物膜法厌氧释磷需要高碳源刺激的问题,通过优化工艺条件强化生物膜好氧吸磷能力提高生物膜蓄磷量,进而减少厌氧释磷时的碳源消耗。采用生物膜法序批式反应器(BSBR),考察了在低碳源投加下,蓄磷量与磷富集罐磷浓度的响应关系,采用正交试验探究溶解氧、搅拌速度以及好氧时间对磷酸盐强化吸收的影响。结果表明:当温度为(25±2)℃、厌氧外加碳源为(180±20) mg/L时,富集罐磷浓度随着生物膜蓄磷量的增加而增加,最高可达到90.62 mg/L。相同蓄磷量下,溶解氧浓度从2 mg/L增加至8 mg/L,磷酸盐最大吸收速率可从2.60 mg/(L·h)上升到8.70 mg/(L·h)。正交实验结果表明:各因素对磷酸盐强化吸收的影响顺序为溶解氧>好氧时间>搅拌速度。当溶解氧浓度为6 mg/L,搅拌速度为200 r/min,好氧时间为5 h时,除磷效率最高可达99.98%。
- 生物膜法 /
- 磷强化吸收 /
- 影响因素 /
- 低碳源
Abstract: Compared with the traditional enhanced biological phosphorus removal(EBPR) process which achieves the enrichment and recovery of sludge phosphate through the flow process, the biofilm process can efficiently and synchronically remove and enrich phosphate in wastewater, thus has the potential to be applied to the mainstream process. Given the problem of high carbon source stimulation required for anaerobic phosphorus release by the biofilm process, the phosphorus storage of biofilm can be enhanced by optimizing the process conditions to strengthen the biofilm aerobic phosphorus uptake capacity, thus reducing the consumption of carbon source during anaerobic phosphorus release. In this paper, a biofilm sequencing batch reactor(BSBR) was used to investigate the response relationship between phosphorus storage and phosphorus concentration in the recovery tank under the addition of a low carbon source. The effects of dissolved oxygen, mixing strength and aerobic time on phosphate enhanced absorption were studied by orthogonal test. The results showed that when the temperature was(25±2) ℃ and the anaerobic external carbon source was(180±20) mg/L, the phosphorus concentration in the enrichment solution increased with the increase of phosphorus storage in the biofilm, up to 90.62 mg/L. Under the same phosphorus storage, the dissolved oxygen concentration increased from 2 mg/L to 8 mg/L, and the maximum phosphate absorption rate increased from 2.60 mg/(L·h) to 8.70 mg/(L·h). Orthogonal experiments showed that the order of influencing factors on phosphate enhanced absorption was dissolved oxygen>aerobic time>mixing intensity. When the dissolved oxygen concentration was 6 mg/L, the stirring speed was 200 r/min, and the aerobic time was 5 h, the phosphorus removal efficiency was up to 99.98%.
- biofilm process /
- enhanced phosphorus absorption /
- influencing factors /
- low carbon source

HTML全文

参考文献(22)

[1]	ISLAM M S,ZHANG Y Y,DONG S M,et al.Dynamics of microbial community structure and nutrient removal from an innovative side-stream enhanced biological phosphorus removal process[J].Journal of Environmental Management,2017,198:300-307.
[2]	MELIA P M,ANDREW B C,SOHI S P,et al.Trends in the recovery of phosphorus in bioavailable forms from wastewater[J].Chemosphere,2017,186:381-395.
[3]	吕景花,陈会杰,付奥,等.污水处理过程中的侧流磷回收工艺研究进展[J].应用化工,2018,47(8):1758-1761.
[4]	WONG P Y,CHENG K Y,KAKAONEN A H,et al.A novel post denitrification configuration for phosphorus recovery using polyphosphate accumulating organisms[J].Water Research,2013,47(17):6488-6495.
[5]	TIAN Q,ONG S K,XIE X,et al.Enhanced phosphorus recovery and biofilm microbial community changes in an alternating anaerobic/aerobic biofilter[J].Chemosphere,2016,144:1797-1806.
[6]	KODERA H,HATAMOTO M,ABE K,et al.Phosphate recovery as concentrated solution from treated wastewater by a PAO-enriched biofilm reactor[J].Water Research,2013,47(6):2025-2032.
[7]	单捷,潘杨,章豪,等.基于生物膜法磷回收工艺厌氧释磷研究[J].环境科学学报,2020,40(8):2749-2757.
[8]	LONG X Y,TANG R,WANG T,et al.Characteristics of enhanced biological phosphorus removal (EBPR) process under the combined actions of intracellular and extracellular polyphosphate[J].Chemosphere,2021,279:130912.
[9]	ZHANG H,BI Z,PAN Y,et al.Enhanced phosphorus storage in suspended biofilm by increasing dissolved oxygen[J].Science of the Total Environment,2020,722:137876.
[10]	孙健.新型连续交替式厌氧好氧生物滤池蓄磷及磷回收工艺的研究[D].上海:东华大学,2013.
[11]	陈杰云,余薇薇,杜邦昊,等.HRT对多级A/O+悬浮填料组合工艺脱氮除磷的影响[J].中国给水排水,2017,9(33):31-34.
[12]	张为堂,侯锋,刘青松,等.HRT和曝气量对AAO-BAF系统反硝化除磷性能的影响[J].化工学报,2014,65(4):1436-1442.
[13]	荣宏伟,彭永臻,张朝升,等.曝气量对SBBR生物除磷的影响研究[J].中国给水排水,2008,24(5):72-76.
[14]	WEN T L,NAKAMURA K,MATAUO T.Internal energy-based competition between polyphosphate- and glycogen-accumulating bacteria in biological phosphorus removal reactors-effect of ja:math feeding ratio[J].Water Research,2015,31(6):1430-1438.
[15]	国家环境保护总局《水和废水监测分析方法》编委会.水和废水监测分析方法[M].4版.北京:中国环境科学出版社,2002:200-284.
[16]	CORNEL P,SCHAUM C.Phosphorus recovery from wastewater:needs,technologies and costs[J].Water Science and Technology,2009,59(6):1069-1076.
[17]	UENO Y,FUJII M.Three years experience of operating and selling recovered struvite from full-scale plant[J].Environmental Technology,2001,22(11):1373-1381.
[18]	YANG W J,SHAN J,PAN Y,et al.A new strategy for obtaining highly concentrated phosphorus recovery solution in biofilm phosphorus recovery process[J].Journal of Environmental Sciences,2022,112:366-375.
[19]	吴海珍,韦聪,于哲,等.废水好氧生物处理工艺中氧的传质与强化的理论与实践[J].化工进展,2018,37(10):4033-4043.
[20]	方芳,鲍晓静,操家顺.溶解氧对活性污泥胞内贮存物和除磷性能的影响[J].环境工程,2012,30(6):8-11.
[21]	HU Z R,WENTZEL M C,EKAMA G A.Anoxic growth of phosphate-accumulating organisms (PAOs) in biological nutrient removal activated sludge systems[J].Water Research (Oxford),2002,36(19):4927-4937.
[22]	SUN L Q,WANG Z Y,WEI X,et al.Enhanced biological nitrogen and phosphorus removal using sequencing batch membrane-aerated biofilm reactor[J].Chemical Engineering Science,2015,135:559-565.