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Impacts of backwashing on micropollutant removal and associated microbial assembly processes in sand

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 3, doi: 10.1007/s11783-023-1634-z

Abstract:

● Backwashing in sand filters with 2-h and 4-h EBCTs was simulated.

Keywords： Sand filter     Backwashing     Recovery     Micropollutants     Community composition    

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polymerization on the performance of nanofiltration membranes for desalination, organic, and micropollutants removal

Frontiers of Chemical Science and Engineering   Pages 2025-2036 doi: 10.1007/s11705-023-2356-2

Abstract: Chemistry of the polyamide active layer of a desalination membrane is critical in determining both its physical and chemical properties. In this study, we designed and fabricated three novel membranes with different active layers using the crosslinkers: terephthaloyl chloride, isophthaloyl chloride, and trimesoyl chloride. The crosslinkers were reacted with an aqueous solution of an aliphatic tetra-amine. Because these crosslinkers differ in their structures and crosslinking mechanisms during interfacial polymerization, the resultant membranes also possess different structural properties. The water contact angle of the fabricated membranes also varies; the water contact angles of 4A-3P-TPC@PSF/PET, 4A-3P-TMC@PSF/PET, and 4A-3P-IPC@PSF/PET, are 68.9°, 65.6°, and 53.9°, respectively. Similarly, the desalination performance of resultant membranes also showed variations, with 4A-3P-TPC@PSF/PET, 4A-3P-IPC@PSF/PET, and 4A-3P-TMC@PSF/PET having a permeate flux of 17.14, 25.70, and 30.90 L·m−2·h−1, respectively, at 2.5 MPa. The 4A-3P-TPC@PSF/PET membrane exhibited extensive crosslinking with aliphatic linear amine, and cationic dye rhodamine B, MgCl2, and amitriptyline rejection rates of 98.6%, 92.7% and 80.9%, respectively. The 4A-3P-TMC@PSF/PET membrane showed mediocre performance, while 4A-3P-IPC@PSF/PET membrane showed even lower performance, with a 35% rejection of methyl orange dye.

Keywords： acid chlorides     covalent crosslinking     desalination     linear aliphatic amine     micropollutant removal    

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Combined process of biofiltration and ozone oxidation as an advanced treatment process for wastewater reuse

Xinwei LI,Hanchang SHI,Kuixiao LI,Liang ZHANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 1076-1083 doi: 10.1007/s11783-015-0770-5

Abstract: The combined process demonstrated good removal performance of conventional pollutants, including concentrationsOzonation exhibited high antibiotic removal efficiencies, especially for tetracycline (94%).However, micropollutant removal efficiency was negatively affected by the nitrite produced by DNBF.

Keywords： wastewater treatment     micropollutant removal     ozonation     biofiltration     toxicity    

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Occurrence and Roles of Comammox Bacteria in Water and Wastewater Treatment Systems: A Critical Review Review

Naga Raju Maddela, Zhihao Gan, Yabing Meng, Fuqiang Fan, Fangang Meng

Engineering 2022, Volume 17, Issue 10,   Pages 196-206 doi: 10.1016/j.eng.2021.07.024

Abstract:

Nitrogen removal is a critical process in water treatment plants (WTPs) and wastewater treatment plantsand wastewater treatment, this review is intended to discuss the roles and applications of CMX in the removal

Keywords： Comammox bacteria     Wastewater treatment     Nitrogen removal     Micropollutant degradation     Reactor operation    

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Research progress in removal of trace carbon dioxide from closed spaces

ZHANG Yatao, FAN Lihai, ZHANG Lin, CHEN Huanlin

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3,   Pages 310-316 doi: 10.1007/s11705-007-0057-x

Abstract: In this paper, the removal of trace carbon dioxide from closed spaces through membrane process and biotransformationIt is found that higher CO removal efficiency can be obtained in biotransformation and membrane process

Keywords： removal efficiency     consumption     removal     CO removal     membrane microalgae    

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Removal of SO

Xiaolei LI, Chunying ZHU, Youguang MA

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2,   Pages 185-191 doi: 10.1007/s11705-013-1326-5

Abstract: In this work, the removal of SO from gas mixture with air and SO by ammonium bicarbonate aqueous solutionconcentration of ammonium bicarbonate, the SO inlet concentration of gas phase and the gas flow rate on the removalshorter the lasting time of SO completely removed in gas outlet, and then the faster the decrease in the removalsolution pH was less than the critical pH, it would sharply fall, resulting in a rapid decrease of the SO removalA theoretical model for predicting the SO removal rate has been developed by taking the chemical enhancement

Keywords： SO2 removal     bubble column reactor     removal rate     ammonium bicarbonate     absorbent    

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Scrap Iron Filings assisted nitrate and phosphate removal in low C/N waters using mixed microbial culture

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1358-2

Abstract:

• Microbes enhance denitrification under varying DO concentrations and SIF dosages.

Keywords： Scrap iron filing     Nitrate removal     Phosphate removal     Mixed culture denitrification     Zero valent iron    

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Analysis of Flue Gas Pollutants Deep-removal Technology in Coal-fired Power Plants

Xiao-lu Zhang

Frontiers of Engineering Management 2014, Volume 1, Issue 4,   Pages 336-340 doi: 10.15302/J-FEM-2014061

Abstract: Developing Flue Gas Pollutant Deep-removal Technology (DRT) for coal-fired power plants for deep-removingthe necessity and existing problems of developing DRT suitable for China, this study focused on PM removalFinally, the flue gas pollutant removal system at a 2×660MW supercritical power plant was introduced,

Keywords： Coal-fired power plant     flue gas pollutants     deep-removal     PM2.5 removal    

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Mercury removal from flue gas using nitrate as an electron acceptor in a membrane biofilm reactor

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1454-y

Abstract:

Membrane bioreactor achieved mercury removal using nitrate as an electron

Keywords： Mercury removal     Oxygen     Ferrous sulfide     Transformation of mercury     Microbial community    

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Preparation and selection of Fe-Cu sorbent for COS removal in syngas

Bowu CHENG, Zhaofei CAO, Yong BAI, Dexiang ZHANG

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4,   Pages 441-444 doi: 10.1007/s11705-010-0507-8

Abstract: with iron trioxide hydrate, cupric oxide by a novel method was studied in a fixed-bed reactor for COS removalAt 700 K and space velocity of 1000 h , the efficiency of sulfur removal and breakthrough sulfur capacity

Keywords： sorbent     desulfurization     COS removal     syngas    

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of magnetic multi-template molecularly imprinted polymer composite for the selective and efficient removal

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-021-1395-5

Abstract:

• Magnetic multi-template molecularly imprinted polymer composite was synthesized.

Keywords： Tetracyclines     Removal     Adsorption     Molecularly imprinted polymer     Magnetic graphene oxide    

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Phosphorous removal from wastewater by lanthanum modified Y zeolites

Weikang ZHANG, Ye TIAN

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 2,   Pages 209-215 doi: 10.1007/s11705-014-1448-4

Abstract: zeolite to remove phosphate increased as the La/Y zeolite mass ratio increased and after 4 h, a phosphate removal

Keywords： phosphate removal     wastewater     lanthanum     impregnation     Y zeolites    

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Hongshiyan Landslide Dam Danger Removal and Coordinated Management

Ning Liu

Frontiers of Engineering Management 2014, Volume 1, Issue 3,   Pages 308-317 doi: 10.15302/J-FEM-2014041

Abstract: triggered by an earthquake near Ludian County in Zhaotong City, Yunnan Province, introduces how the danger removal

Keywords： the Zhaotong Ludian earthquake     danger removal of the landslide dam     coordinated management    

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Enhanced nitrogen removal reliability and efficiency in integrated constructed wetland microcosms using

Yue WEN, Chao XU, Gang LIU, Yi CHEN, Qi ZHOU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 1,   Pages 140-147 doi: 10.1007/s11783-011-0286-6

Abstract: purpose of this study is to reduce the seasonal fluctuation and enhance the efficiency of nitrogen removal, but also enhanced the nitrogen removal efficiency by 50%.The average apparent rate of nitrogen removal in VF2-HSF2 reached to 2.52 gN·m ·d , which doubled thePlant uptake and organic nitrogen sediment accounted for 12% and 6% of the total nitrogen removal inremoval in VF1-HSF1 and VF2-HSF2, respectively.

Keywords： constructed wetland     zeolite     bioregeneration     nitrogen removal    

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Enhanced nutrients removal from municipal wastewater through biological phosphorus removal followed by

Yandong Yang,Liang Zhang,Hedong Shao,Shujun Zhang,Pengchao Gu,Yongzhen Peng

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 2, doi: 10.1007/s11783-017-0911-0

Abstract: EBPR and PN/A were combined to enhance nutrients removal from municipal wastewater.Phosphorus and nitrogen removal was achieved in two separated units.A proper post-anoxic phase improved the nitrogen removal performance of PN/A unit.In this study, a new alternative consisting of enhanced biological phosphorus removal (EBPR) followedA maximum of nitrogen removal rate of 0.12 kg N?m ?d was finally achieved.

Keywords： Phosphorus removal     Partial nitrification     Anammox     Municipal wastewater    

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Title Author Date Type Operation

Impacts of backwashing on micropollutant removal and associated microbial assembly processes in sand

Journal Article

polymerization on the performance of nanofiltration membranes for desalination, organic, and micropollutants removal

Journal Article

Combined process of biofiltration and ozone oxidation as an advanced treatment process for wastewater reuse

Xinwei LI,Hanchang SHI,Kuixiao LI,Liang ZHANG

Journal Article

Occurrence and Roles of Comammox Bacteria in Water and Wastewater Treatment Systems: A Critical Review

Naga Raju Maddela, Zhihao Gan, Yabing Meng, Fuqiang Fan, Fangang Meng

Journal Article

Research progress in removal of trace carbon dioxide from closed spaces

ZHANG Yatao, FAN Lihai, ZHANG Lin, CHEN Huanlin

Journal Article

Removal of SO

Xiaolei LI, Chunying ZHU, Youguang MA

Journal Article

Scrap Iron Filings assisted nitrate and phosphate removal in low C/N waters using mixed microbial culture

Journal Article

Analysis of Flue Gas Pollutants Deep-removal Technology in Coal-fired Power Plants

Xiao-lu Zhang

Journal Article

Mercury removal from flue gas using nitrate as an electron acceptor in a membrane biofilm reactor

Journal Article

Preparation and selection of Fe-Cu sorbent for COS removal in syngas

Bowu CHENG, Zhaofei CAO, Yong BAI, Dexiang ZHANG

Journal Article

of magnetic multi-template molecularly imprinted polymer composite for the selective and efficient removal

Journal Article

Phosphorous removal from wastewater by lanthanum modified Y zeolites

Weikang ZHANG, Ye TIAN

Journal Article

Hongshiyan Landslide Dam Danger Removal and Coordinated Management

Ning Liu

Journal Article

Enhanced nitrogen removal reliability and efficiency in integrated constructed wetland microcosms using

Yue WEN, Chao XU, Gang LIU, Yi CHEN, Qi ZHOU

Journal Article

Enhanced nutrients removal from municipal wastewater through biological phosphorus removal followed by

Yandong Yang,Liang Zhang,Hedong Shao,Shujun Zhang,Pengchao Gu,Yongzhen Peng

Journal Article