膜过滤耦合电化学强化废水中磷回收效能

许军; 魏海娟; 王志伟

doi:10.13205/j.hjgc.202203002

膜过滤耦合电化学强化废水中磷回收效能

doi: 10.13205/j.hjgc.202203002

1. 同济大学环境科学与工程学院, 上海 200092;
2. 上海城投污水处理有限公司白龙港污水处理厂, 上海 201201

基金项目:

上海城投污水处理有限公司科研项目

详细信息

作者简介:
许军(1994-),男,硕士,主要研究方向为膜法污水处理技术。1280691813@qq.com

通讯作者:
王志伟(1980-),男,博士,教授,主要研究方向为膜法污水处理技术。zwwang@tongji.edu.cn

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- 文章访问数: 331
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- 被引次数: 0
出版历程
- 收稿日期: 2021-06-21
- 网络出版日期: 2022-07-07

ENHANCED PHOSPHORUS RECOVERY FROM WASTEWATER BY MEMBRANE FILTRATION COUPLED WITH ELECTROCHEMICAL TECHNOLOGY

1. School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;
2. Bailonggang WWTP, Shanghai Chengtou Wastewater Treatment Co., Ltd, Shanghai 201201, China

摘要

摘要: 提出了一种膜过滤耦合电化学非均相沉淀的新型磷回收工艺对含磷废水进行处理,探究不同膜通量、电流密度、磷初始浓度及极性反转时间对磷去除和回收的影响。结果表明:在磷初始浓度为5 mmol/L、膜通量为22.1 L/(m²·h)和电流密度为20 A/m²的条件下,磷平均去除率为92.0%,产物的主要成分为鸟粪石。在flow-through操作模式下,不同磷初始浓度对磷去除效果无明显影响。当系统连续流运行时,每隔4 h极性反转6 min可使反应器磷去除与回收性能处于相对较优水平,磷去除率维持在90%左右。
- 磷回收 /
- 鸟粪石 /
- 电化学 /
- 膜过滤 /
- 废水处理
Abstract: A novel phosphorus recovery process combining membrane filtration and electrochemical struvite precipitation was proposed to treat phosphorus-containing wastewater. The effects of membrane flux, current density, initial phosphorus concentration and polarity reversal time on phosphorus removal and recovery were investigated. The results showed that the average phosphorus removal efficiency was 92.0% at an initial phosphorus concentration of 5 mmol/L, a membrane flux of 22.1 L/(m²·h) and a current density of 20 A/m², and struvite was the dominant composition of the recovered products. In the flow-through operation mode, different initial phosphorus concentrations had no significant effect on phosphorus removal. When the system was operated in continuous flow mode, the phosphones removal rate was maintained at 90% by 6 min polarity reversal every 4 h operation.
- phosphorus recovery /
- struvite /
- electrochemical technology /
- membrane filtration /
- wastewater treatment

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参考文献(21)

[1]	YE Y Y, NGO H H, GUO W S, et al. Insight into chemical phosphate recovery from municipal wastewater[J]. Science of the Total Environment, 2017, 576:159-171.
[2]	KUMAR R, PAL P. Assessing the feasibility of N and P recovery by struvite precipitation from nutrient-rich wastewater:a review[J]. Environmental Science and Pollution Research, 2015, 22(22):17453-17464.
[3]	张棋,高娜,赵首萍,等.鸟粪石结晶法回收废水中氮磷的研究进展[J].四川环境, 2013, 32(1):105-109.
[4]	王涛,罗璟,李伟民,等.基于污泥减量的鸟粪石回收低浓度氮磷影响因素研究[J].环境工程, 2010, 28(5):47-50.
[5]	PASTOR L, MANGIN D, BARAT R, et al. A pilot-scale study of struvite precipitation in a stirred tank reactor:conditions influencing the process[J]. Bioresource Technology, 2008, 99(14):6285-6291.
[6]	STRATUL I, SCRIMSHAW M D, LESTER J N. Conditions influencing the precipitation of magnesium ammonium phosphate[J]. Water Research, 2001, 35(17):4191-4199.
[7]	LEI Y, SONG B N, van DER WEIJ R D, et al. Electrochemical induced calcium phosphate precipitation:importance of local pH[J]. Environmental Science&Technology, 2017, 51(19):11156-11164.
[8]	BEN MOUSSA S, MAURIN G, GABRIELLI C, et al. Electrochemical precipitation of struvite[J]. Electrochemical and Solid State Letters, 2006, 9(6):C97-C101.
[9]	LIU Y, DENG Y Y, ZHANG Q, et al. Overview of recent developments of resource recovery from wastewater via electrochemistry-based technologies[J]. Science of the Total Environment, 2021, 757:143901.
[10]	KELLY P T, HE Z. Nutrients removal and recovery in bioelectrochemical systems:a review[J]. Bioresource Technology, 2014, 153:351-360.
[11]	RADJENOVIC J, SEDLAK D L. Challenges and opportunities for electrochemical processes as next-generation technologies for the treatment of contaminated water[J]. Environmental Science&Technology, 2015, 49(19):11292-11302.
[12]	SUN M, WANG X X, WINTER L R, et al. Electrified membranes for water treatment applications[J]. ACS ES&T Engineering, 2021, 1(4):725-752.
[13]	GAYEN P, SPATARO J, AVASARALA S, et al. Electrocatalytic reduction of nitrate using magneli phase TiO₂ reactive electrochemical membranes doped with Pd-based catalysts[J]. Environmental Science&Technology, 2018, 52(16):9370-9379.
[14]	WANG C C, HAO X D, GUO G S, et al. Formation of pure struvite at neutral pH by electrochemical deposition[J]. Chemical Engineering Journal, 2010, 159(1):280-283.
[15]	陈龙,赵剑强,张渝,等.电化学沉淀法从废水中回收鸟粪石[J].环境工程学报, 2014, 8(12):5264-5270.
[16]	YANG J, WANG J, JIA J P. Improvement of electrochemical wastewater treatment through mass transfer in a seepage carbon nanotube electrode reactor[J]. Environmental Science&Technology, 2009, 43(10):3796-3802.
[17]	TAKABE Y, OTA N, FUJIYAMA M, et al. Utilisation of polarity inversion for phosphorus recovery in electrochemical precipitation with anaerobic digestion effluent[J]. Science of the Total Environment, 2020, 706:136090.
[18]	TANSEL B, LUNN G, MONJE O. Struvite formation and decomposition characteristics for ammonia and phosphorus recovery:a review of magnesium-ammonia-phosphate interactions[J]. Chemosphere, 2018, 194:504-514.
[19]	LEI Y, REMMERS J C, SAAKES M, et al. Influence of cell configuration and long-term operation on electrochemical phosphorus recovery from domestic wastewater[J]. ACS Sustainable Chemistry&Engineering, 2019, 7(7):7362-7368.
[20]	CUSICK R D, ULLERY M L, DEMPSEY B A, et al. Electrochemical struvite precipitation from digestate with a fluidized bed cathode microbial electrolysis cell[J]. Water Research, 2014, 54(5):297-306.
[21]	LEI Y, REMMERS J C, SAAKES M, et al. Is there a precipitation sequence in municipal wastewater induced by electrolysis?[J]. Environmental Science&Technology, 2018, 52(15):8399-8407.