Towards the new era of wastewater treatment of China: Development history, current status, and future directions

Xu, Ao; Wu, Yin-Hu; Chen, Zhuo; Wu, Guangxue; Wu, Qian-Yuan; Ling, Fangqiong; Huang, Wei E.; Hu, Hong-Ying

doi:10.1016/j.watcyc.2020.06.004

Cited by 84 publications

(29 citation statements)

References 8 publications

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“…Thus, the purification of mercury ions was evaluated using simulated desulfurization wastewater discharged from power plants (the simulated desulfurization wastewater in Table S5 †). 65 In this process Fig. 5(a), MWS was employed for desulfurization wastewater treatment, and was subsequently used for evaporative purification after wrapping with PVA.…”

Section: Exhausted Pva-mws Adsorbents Upcycled For Solar Steam Genera...mentioning

confidence: 99%

An upcycled wood sponge adsorbent for drinking water purification by solar steam generation

Shi

et al. 2022

Environ. Sci.: Nano

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Section: Exhausted Pva-mws Adsorbents Upcycled For Solar Steam Genera...mentioning

confidence: 99%

An upcycled wood sponge adsorbent for drinking water purification by solar steam generation

Shi

et al. 2022

Environ. Sci.: Nano

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“…The accelerated carbon neutrality process worsens water shortages 2,3 . Meanwhile, countries and regions continue to face water contamination 4 . Water reclamation is a win-win strategy for increasing freshwater supply and shortening the water footprint of human beings 5,6 .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of biofouling characteristics on reverse osmosis membranes of disinfection-residual-bacteria (DRB) after seven kinds of disinfection

Wang²,

Wang

et al. 2022

Preprint

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Biofouling is a critical defect of the reverse osmosis (RO) system. It has been reported that disinfection processes tend to select certain undesirable disinfection-residual bacteria (DRB), leading to severe long-term biofouling potential. To provide constructive guidance on biofouling prevention in RO systems, this study evaluated the biofouling characteristics of RO membranes of DRB after the application of five mature disinfection methods (NaClO, NH2Cl, ClO2, UV, and O3) and two novel disinfection methods (K2FeO4 and flow-through electrode system (FES)). After a 32-day biofilm cultivation on the RO membranes, the DRB biofilm of K2FeO4 and O3 caused a slight normalised flux drop (22.4 ± 2.4% and 23.9 ± 1.7%, respectively) of RO membrane compared with the control group (non-disinfected, ~ 27% normalised flux drop). Moreover, the biofouling degree of the NH2Cl-DRB biofilm was similar to that of the control group. The remaining disinfection types aggravated membrane biofouling. The biofouling behaviour of DRB showed no relationship with bacterial concentration or activity. The thickness and density of the biofilms as well as the organics/bacterial number ratio in the DRB biofilm, helped explain the difference in the fouling degree between each group. Moreover, microbial community analysis showed that the relative abundance of typical highly secretory and biofouling-related genera, such as Pseudomonas, Sphingomonas, Acinetobacter, Methylobacterium, Sphingobium, and Ralstonia, were the main reasons for the difference in biofouling degree. All types of disinfection effectively prevented pathogen reproduction in the DRB biofilm. However, the relative abundance of (opportunistic) pathogens increased significantly after NaClO and ClO2 disinfection.

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“…Meantime, the discharge of wastewater in the world exceeds 2.2 trillion m 3 /year [2]. In China, as a rapid developing economy of the world, the total wastewater discharge volume was ~70 billion m 3 /year in 2017 [3]. If wastewater was properly treated, it can be used for agricultural landscape irrigation, industrial applications, car washing, toilet flushing, lawn watering, firefighting, and many other purposes [4].…”

Section: Introductionmentioning

confidence: 99%

Removal and Fouling Influence of Microplastics in Fertilizer Driven Forward Osmosis for Wastewater Reclamation

et al. 2021

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Insufficient removal of microplastics (MPs) and nanoplastics (NPs) may exert negative effects on the environment and human health during wastewater reclamation. The fertilizer-driven forward osmosis (FDFO) is an emerging potential technology to generate high-quality water for irrigation of hydroponic systems. In this study, the removal of MPs/NPs by the FDFO process together with their impact on FDFO membrane fouling was investigated, due to FDFO’s low molecular weight cut-off and energy requirement by using fertilizer as draw solution. Plastic particles with two different sizes (100 nm and 1 μm) and extracellular polymers released by real wastewater bacteria were utilized as model compounds for FDFO performance comparison. Results show that FDFO membrane system could generate high-quality irrigation water with only fertilizer, completely removing extracellular polymers, MPs and NPs from wastewater. It was found that the MPs and NPs themselves do not cause a significant membrane fouling. Moreover, it could help to reduce the membrane fouling caused by extracellular substances. That is probably because MPs and NPs helped to form a loose and porous fouling layer. Therefore, the FDFO process could be a long-term stable (low fouling) process for the reclamation of wastewater with high-quality requirements.

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Towards the new era of wastewater treatment of China: Development history, current status, and future directions

Cited by 84 publications

References 8 publications

An upcycled wood sponge adsorbent for drinking water purification by solar steam generation

An upcycled wood sponge adsorbent for drinking water purification by solar steam generation

Evaluation of biofouling characteristics on reverse osmosis membranes of disinfection-residual-bacteria (DRB) after seven kinds of disinfection

Removal and Fouling Influence of Microplastics in Fertilizer Driven Forward Osmosis for Wastewater Reclamation

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