UTILIZING ROOF RAINWATER ENERGY TO DRIVE MICROFILTRATION MEMBRANE COUPLED WITH ELECTRO-OXIDATION DISINFECTION TO TREAT RAINWATER

LIU Li-fang; WANG Zhen; ZHAO Wen-tao; HONG Liu; LIN Mao-hong; XU Jiong-ji; WANG Zhi-hong; DU Xing

doi:10.13205/j.hjgc.202103003

Volume 39 Issue 3

Jul. 2021

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LIU Li-fang, WANG Zhen, ZHAO Wen-tao, HONG Liu, LIN Mao-hong, XU Jiong-ji, WANG Zhi-hong, DU Xing. UTILIZING ROOF RAINWATER ENERGY TO DRIVE MICROFILTRATION MEMBRANE COUPLED WITH ELECTRO-OXIDATION DISINFECTION TO TREAT RAINWATER[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(3): 14-21,28. doi: 10.13205/j.hjgc.202103003

Citation:

LIU Li-fang, WANG Zhen, ZHAO Wen-tao, HONG Liu, LIN Mao-hong, XU Jiong-ji, WANG Zhi-hong, DU Xing. UTILIZING ROOF RAINWATER ENERGY TO DRIVE MICROFILTRATION MEMBRANE COUPLED WITH ELECTRO-OXIDATION DISINFECTION TO TREAT RAINWATER[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(3): 14-21,28. doi: 10.13205/j.hjgc.202103003

Citation:

LIU Li-fang, WANG Zhen, ZHAO Wen-tao, HONG Liu, LIN Mao-hong, XU Jiong-ji, WANG Zhi-hong, DU Xing. UTILIZING ROOF RAINWATER ENERGY TO DRIVE MICROFILTRATION MEMBRANE COUPLED WITH ELECTRO-OXIDATION DISINFECTION TO TREAT RAINWATER[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(3): 14-21,28. doi: 10.13205/j.hjgc.202103003

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UTILIZING ROOF RAINWATER ENERGY TO DRIVE MICROFILTRATION MEMBRANE COUPLED WITH ELECTRO-OXIDATION DISINFECTION TO TREAT RAINWATER

doi: 10.13205/j.hjgc.202103003

1. School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China;
2. Foshan Municipal Technical Service Center for Soil and Solid Waste Pollution Prevention and Control, Foshan 528000, China;
3. Foshan Environmental Protection Investment Co., Ltd, Foshan 528000, China

Received Date: 2020-03-11
Available Online: 2021-07-19

Abstract

Abstract

Inorder to develope suitable treatment technologies for roof rainwater reclamation, a system utilizing roof rainwater energy to drive a microfiltration membrane pool coupled with electro-oxidation disinfection to treat roof rainwater was proposed. Firstly, the gravity-driven membrane bioreactor performance in treatment of simulated roof rainwater was investigated. The membrane permeate flux stabilized at 7 L/(m²·h) under a set water head (ΔH=0.6 m) over 280 hours of operation, and the turbidity of membrane effluent was lower than 0.34 NTU. However, the removal rate of organic matter was limited, while the removal rate of NH₃-N reached 80% above. Then, scanning electron microscopy(SEM) and energy dispersive spectrometry (EDS) analysis confirmed that diverse elements constituting organic compounds existed in the filter cake layer on the vicinity of membrane, and the filter cake layer exhibited good performance in trace metals removal. Finally, the disinfection results of the electro-oxidation process showed that Ti/IrO₂-Ta₂O₅ electrode had excellent sterilization effect. When the current density was 10 mA/cm² and the electro-oxidation time was not shorter than 15 min, the total number of bacteria in the effluent was less than 100 CFU/mL. The research provided a reference for the treatment and disinfection of roof rainwater.
- roof rainwater energy,
- rainwater purification,
- gravity-driven microfiltration membrane,
- electro-oxidation,
- disinfection

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References(23)

References

[1]	TORRES M N, FONTECHA J E, ZHU Z, et al. A participatory approach based on stochastic optimization for the spatial allocation of sustainable urban drainage systems for rainwater harvesting[J]. Environmental Modelling & Software, 2020,123:104532.
[2]	ALIM M A, RAHMAN A, TAO Z, et al. Suitability of roof harvested rainwater for potential potable water production:a scoping review[J]. Journal of Cleaner Production, 2020,248:119226.
[3]	PETER-VARBANETS M, ZURBRUGG C, SWARTZ C, et al. Decentralized systems for potable water and the potential of membrane technology[J]. Water Research, 2009,43(2):245-265.
[4]	DING A, WANG J L, LIN D C, et al. Effects of GAC layer on the performance of gravity-driven membrane filtration (GDM) system for rainwater recycling[J]. Chemosphere, 2018,191:253-261.
[5]	DU X, XU J J, MO Z Y, et al. The performance of gravity-driven membrane (GDM) filtration for roofing rainwater reuse:implications of roofing rainwater energy and rainwater purification[J]. Science of the Total Environment, 2019,697:134187.
[6]	CHO K, QU Y, KWON D, et al. Effects of anodic potential and chloride ion on overall reactivity in electrochemical reactors designed for solar-powered wastewater treatment[J]. Environmental Science & Technology, 2014,48(4):2377-2384.
[7]	SCHAEFER C E, ANDAYA C, URTIAGA A. Assessment of disinfection and by-product formation during electrochemical treatment of surface water using a Ti/IrO₂ anode[J]. Chemical Engineering Journal, 2015,264:411-416.
[8]	FENG W J, DELETIC A, WANG Z Y, et al. Electrochemical oxidation disinfects urban stormwater:major disinfection mechanisms and longevity tests[J]. Science of the Total Environment, 2019,646:1440-1447.
[9]	JIANG N, WANG Y C, ZHAO Q L, et al. Application of Ti/IrO₂ electrode in the electrochemical oxidation of the TNT red water[J]. Environmental Pollution, 2020,259:113801.
[10]	GOLDSTEIN S, ASCHENGRAU D, DIAMANT Y, et al. Photolysis of aqueous H₂O₂:quantum yield and applications for polychromatic UV actinometry in photoreactors[J]. Environmental Science and Technology, 2007,41(21):7486-7490.
[11]	TANG X B, DING A, QU F S, et al. Effect of operation parameters on the flux stabilization of gravity-driven membrane (GDM) filtration system for decentralized water supply[J]. Environmental Science and Pollution Research, 2016,23(16):16771-16780.
[12]	PETER-VARBANETS M, HAMMES F, VITAL M, et al. Stabilization of flux during dead-end ultra-low pressure ultrafiltration[J]. Water Research, 2010,44(12):3607-3616.
[13]	PETER-VARBANETS M, MARGOT J, TRABER J, et al. Mechanisms of membrane fouling during ultra-low pressure ultrafiltration[J]. Journal of Membrane Science, 2011,377(1/2):42-53.
[14]	PRONK W, DING A, MORGENROTH E, et al. Gravity-driven membrane filtration for water and wastewater treatment:a review[J]. Water Research, 2019,149:553-565.
[15]	CARROLL T, BOOKER N A, MEIER-Haack J. Polyelectrolyte-grafted microfiltration membranes to control fouling by natural organic matter in drinking water[J]. Journal of Membrane Science, 2002,203(1/2):3-13.
[16]	SCHLICHTER B, MAVROV V, CHMIEL H. Study of a hybrid process combining zonation and microfiltration/ultrafiltration for drinking water production from surface water[J]. Desalination, 2004,168:307-317.
[17]	唐小斌, 梁恒, 瞿芳术, 等. 低压无清洗浸没式直接超滤工艺中试研究[J]. 中国给水排水, 2016,32(17):29-33 ,38.
[18]	ABU HASAN H, SHEIKH ABDULLAH S R, KAMARUDIN S K, et al. Simultaneous NH₄⁺-N and Mn²⁺ removal from drinking water using a biological aerated filter system:effects of different aeration rates[J]. Separation and Purification Technology, 2013,118:547-556.
[19]	MARTINEZ-HUITLE C A, BRILLAS E. Decontamination of wastewaters containing synthetic organic dyes by electrochemical methods:a general review[J]. Applied Catalysis B-Environmental, 2009,87(3/4):105-145.
[20]	HUANG X, QU Y, CID C A, et al. Electrochemical disinfection of toilet wastewater using wastewater electrolysis cell[J]. Water Research, 2016,92:164-172.
[21]	ARELLANO M, OTURAN N, PAZOS M, et al. Coupling electro-Fenton process to a biological treatment, a new methodology for the removal of ionic liquids?[J]. Separation and Purification Technology, 2020,233:115990.
[22]	MENG X, KHOSO S A, JIANG F, et al. Removal of chemical oxygen demand and ammonia nitrogen from lead smelting wastewater with high salts content using electrochemical oxidation combined with coagulation-flocculation treatment[J]. Separation and Purification Technology, 2020,235:116233.
[23]	KIM K W, KIM Y J, KIM I T, et al. The electrolytic decomposition mechanism of ammonia to nitrogen at an IrO₂ anode[J]. Electrochimica Acta, 2005,50(22):4356-4364.