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Occurrence and migration of microplastics and plasticizers in different wastewater and sludge treatmentunits in municipal wastewater treatment plant

《环境科学与工程前沿（英文）》 2022年 第16卷 第11期 doi: 10.1007/s11783-022-1577-9

摘要：

● Reduce the quantifying MPs time by using Nile red staining.

关键词： Microplastics     Municipal wastewater treatment plant     Phthalate esters     Thermal hydrolysis    

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Simultaneous nitrification and denitrification in activated sludge system under low oxygen concentration

ZHANG Peng, ZHOU Qi

《环境科学与工程前沿（英文）》 2007年 第1卷 第1期   页码 49-52 doi: 10.1007/s11783-007-0009-1

摘要： Simultaneous nitrification and denitrification (SND), which is more economical compared with the traditional method for nitrogen removal, is studied in this paper. In order to find the suitable conditions of this process, a mixed flow activated sludge system under low oxygen concentration is investigated, and some key control parameters are examined for nitrogen removal from synthetic wastewater. The results show that SND is accessible when oxygen concentration is 0.3 0.8 mg/L. The nitrogen removal rate can be obtained up to 66.7% with solids retention time (SRT) of 45 d, C/N value of 10, and F/M ratio of 0.1 g COD/(g MLSS·d). Theoretical analysis indicates that SND is a physical phenomenon and governed by oxygen diffusion in flocs.

关键词： synthetic wastewater     accessible     Simultaneous nitrification     MLSS·d     diffusion    

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A review on sustainable reuse applications of Fenton sludge during wastewater treatment

《环境科学与工程前沿（英文）》 2022年 第16卷 第6期 doi: 10.1007/s11783-021-1511-6

摘要：

• The sustainable approaches related to Fenton sludge reuse systems are summarized.

关键词： Fenton sludge     Heavy metals     Coagulant     Iron source     Heterogeneous catalyst    

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Flocculation behaviors of a novel papermaking sludge-based flocculant in practical printing and dyeingwastewater treatment

《环境科学与工程前沿（英文）》 2021年 第15卷 第5期 doi: 10.1007/s11783-021-1390-x

摘要：

•PSBF performed better than PAC and PAM in CODCr removals.

关键词： Practical wastewater treatment     Commercial coagulant/flocculant     Secondary coagulation-flocculation process     Chemical oxygen demand     Coagulation-flocculation mechanism    

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Acidogenic sludge fermentation to recover soluble organics as the carbon source for denitrification inwastewater treatment: Comparison of sludge types

Lin Lin, Ying-yu Li, Xiao-yan Li

《环境科学与工程前沿（英文）》 2018年 第12卷 第4期 doi: 10.1007/s11783-018-1043-x

摘要：

CEPS sludge was compared with conventional primary and secondary sludge for the VFAs yield.

Fe-based CEPS sludge exhibited the highest efficiency of organic recovery.

Fermented CEPS sludge liquor provided a sufficient carbon source for denitrification.

99% of nitrate removal was achieved based on the Fe-CEPS and sludge fermentation.

关键词： Sewage sludge     Chemically enhanced primary sedimentation (CEPS)     Acidogenic fermentation     Organic carbon recovery     Nitrogen removal    

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Techno-economic characteristics of wastewater treatment plants retrofitted from the conventional activatedsludge process to the membrane bioreactor process

《环境科学与工程前沿（英文）》 doi: 10.1007/s11783-021-1483-6

摘要：

While a growing number of wastewater treatment plants (WWTPs) are being retrofitted from the conventional activated sludge (CAS) process to the membrane bioreactor (MBR) process, the debate on the techno-economy of MBR vs. CAS has continued and calls for a thorough assessment based on techno-economic valuation.

关键词： Membrane bioreactor (MBR)     Conventional activated sludge (CAS)     Cost-benefit analysis     Data envelopment analysis     Net profit    

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Anaerobic treatment of wastewater containing methanol in up-flow anaerobic sludge bed (UASB) reactor

LIN Yishan, HE Yanling, MENG Zhuo, YANG Shucheng

《环境科学与工程前沿（英文）》 2008年 第2卷 第2期   页码 241-246 doi: 10.1007/s11783-008-0040-x

摘要： The direct conversion of methanol into methane is the main process in anaerobic treatment of methanol containing wastewater. However, acetic acid can also be produced from methanol theoretically, which may probably result in an abrupt pH drop and deteriorate the anaerobic process. Therefore, it is interesting to know what would really happen in an anaerobic reactor treating methanol wastewater. In this study, an up-flow anaerobic sludge bed (UASB) reactor treating methanol wastewater was operated. The chemical oxygen demand (COD), acetic acid and pH of the effluent were monitored at different loadings and influent alkalinity. The results showed that the anaerobic reactor could be operated steadily at as low as 119 mg/L of influent alkalinity and high organic loading rate with no obvious pH drops. Volatile fatty acids accumulation was not observed even at strong shock loadings. The microorganisms in the sludge at the end of the test became homogeneous in morphology, which were mainly spherical or spheroidal in shape.

关键词： homogeneous     spherical     influent alkalinity     process     anaerobic treatment    

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Evaluation of activated sludge properties’ changes in industrial-wastewater pre-treatment: role of residual

《环境科学与工程前沿（英文）》 2023年 第17卷 第6期 doi: 10.1007/s11783-023-1675-3

摘要：

● Medium poly Al salts dominated the PAC residual salts with a rational dosage.

关键词： Coagulation/flocculation     Hydroxyl-aluminum     Hydrolysis reaction     Reactor performance     Activated sludge property     Surface properties    

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Organics Recovery from Waste Activated Sludge In-situ Driving Efficient Nitrogen Removal from Mature

Fangzhai Zhang,Shang Ren,Haoran Liang,Zhaozhi Wang,Ying Yan,Jiahui Wang,Yongzhen Peng,

《工程（英文）》 doi: 10.1016/j.eng.2023.03.005

摘要： The sustainable recovery and utilization of sludge bioenergy within a circular economy context has drawn increasing attention, but there is currently a shortage of reliable technology. This study presents an innovative biotechnology based on free nitrous acid (FNA) to realize sustainable organics recovery from waste activated sludge (WAS) in-situ, driving efficient nitrogen removal from ammonia rich mature landfill leachate by integrating partial nitrification, fermentation, and denitrification process (PN/DN–F/DN). First, ammonia ((1708.5 ± 142.9) mg·L−1) in mature landfill leachate is oxidized to nitrite in the aerobic stage of a partial nitrification coupling denitrification sequencing batch reactor (PN/DN-SBR), with nitrite accumulation ratio of 95.4% ± 2.5%. Then, intermediate effluent (NO2−–N = (1196.9 ± 184.2) mg·L−1) of the PN/DN-SBR, along with concentrated WAS (volatile solids (VSs) = (15119.8 ± 2484.2) mg·L−1), is fed into an anoxic reactor for fermentation coupling denitrification process (F/DN-SBR). FNA, the protonated form of nitrite, degrades organics in the WAS to the soluble fraction by the biocidal effect, and the released organics are utilized by denitrifiers to drive NOx− reduction. An ultra-fast sludge reduction rate of 4.89 kg·m−3·d−1 and nitrogen removal rate of 0.46 kg·m−3·d−1 were realized in the process. Finally, F/DN-SBR effluent containing organics is refluxed to PN/DN-SBR for secondary denitrification in the post anoxic stage. After 175 d operation, an average of 19350.6 mg chemical oxygen demand organics were recovered per operational cycle, with 95.2% nitrogen removal and 53.4% sludge reduction. PN/DN–F/DN is of great significance for promoting a paradigm transformation from energy consumption to energy neutral, specifically, the total benefit in equivalent terms of energy was 291.8 kW·h·t−1 total solid.

关键词： Waste activated sludge     Bioresource recovery     Simultaneous treatment of wastewater and sludge     Mature landfill leachate     Free nitrous acid    

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Innovative method of culturing bdelloid rotifers for the application of wastewater biological treatment

《环境科学与工程前沿（英文）》 2022年 第16卷 第4期 doi: 10.1007/s11783-021-1477-4

摘要：

• An innovative method of culturing bdelloid rotifer fed on flour was proposed.

关键词： Mass culture     Bdelloid rotifer     Habrotrocha     Wheat flour     Sludge settleability    

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Sludge reduction during brewery wastewater treatment by hydrolyzation-food chain reactor system

LI Lijie, YANG Shuo, WANG Qunhui, LI Xuesong

《环境科学与工程前沿（英文）》 2008年 第2卷 第1期   页码 32-35 doi: 10.1007/s11783-008-0025-9

摘要： During brewery wastewater treatment by a hydrolyzation-food chain reactor (FCR) system, sludge was recycled to the anaerobic segment. With the function of hydrolyzation acidification in the anaerobic segment and the processes of aerobic oxidation and antagonism, predation, interaction and symbiosis among microbes in multilevel oxidation segment, residual sludge could be reduced effectively. The 6-month dynamic experiments show that the average chemical oxygen demand (COD) removal ratio was 92.6% and average sludge production of the aerobic segment was 8.14%, with the COD of the influent at 960–1720 mg/L and hydraulic retention time (HRT) of 12 h. Since the produced sludge could be recycled and hydrolyzed in the anaerobic segment, no excess sludge was produced during the steady running for this system.

关键词： FCR     interaction     antagonism     oxidation     brewery wastewater    

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Promotive effect of pyridine on indole degradation by activated sludge under anoxic conditions

LI Yongmei, GU Guowei, LI Wenshu

《环境科学与工程前沿（英文）》 2007年 第1卷 第4期   页码 493-497 doi: 10.1007/s11783-007-0079-0

摘要： Batch experiments were carried out to investigate the promotive effect of pyridine on indole degradation under denitrifying conditions. The seed sludge was obtained from a local coal-coking wastewater treatment facility and was acc

关键词： wastewater treatment     coal-coking wastewater     promotive     degradation    

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Deciphering the effect of sodium dodecylbenzene sulfonate on up-flow anaerobic sludge blanket treatmentof synthetic sulfate-containing wastewater

《环境科学与工程前沿（英文）》 2021年 第15卷 第5期 doi: 10.1007/s11783-020-1385-z

摘要：

• UASB reactor can work efficiently with high COD/SO42- ratios when SDBS exists.

关键词： Up-flow anaerobic sludge blanket     Organic sulfur     Sodium dodecylbenzene sulfonate     COD/SO42− ratio     Microbial community    

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A hybrid membrane process for simultaneous thickening and digestion of waste activated sludge

Zhiwei WANG, Qiaoying WANG, Zhichao WU, Xinhua WANG,

《环境科学与工程前沿（英文）》 2010年 第4卷 第3期   页码 272-279 doi: 10.1007/s11783-010-0234-x

摘要： A hybrid membrane process for simultaneous sludge thickening and digestion (MSTD) was studied. During one cycle (15 d) of operation under a hydraulic retention time of 1 d, the concentration of mixed liquor suspended solids (MLSS) continuously increased from about 4 g·L to 34 g·L, and the mixed liquor volatile suspended solids (MLVSS) increased from about 3 g·L to over 22 g·L. About 42% of the MLVSS and 39% of the MLSS reduction were achieved. The thickening and digestion effects in the MSTD were further analyzed based on a mass balance analysis. Test results showed that biopolymers and cations of biomass were gradually released to the bulk solution during the process. It was also found that the capillary suction time, colloidal chemical oxygen demand, soluble microbial products, viscosity, and MLSS had significant positive correlations with the membrane fouling rate, whereas extracellular polymeric substances, polysaccharides, and proteins extracted from biomass had negative impacts on membrane fouling.

关键词： membrane filtration     sludge digestion     sludge thickening     waste activated sludge    

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Feasibility assessment of up-flow anaerobic sludge blanket treatment of sulfamethoxazole pharmaceuticalwastewater

Yi Chen, Shilong He, Mengmeng Zhou, Tingting Pan, Yujia Xu, Yingxin Gao, Hengkang Wang

《环境科学与工程前沿（英文）》 2018年 第12卷 第5期 doi: 10.1007/s11783-018-1069-0

摘要：

The UASB system successfully treated sulfamethoxazole pharmaceutical wastewater.

High concentration sulfate of this wastewater was the main refractory factor.

UASB recovery performance after a few days of inflow arrest was studied.

The optimal UASB operating conditions for practical application were determined.

关键词： Up-flow anaerobic sludge blanket (UASB)     Methane production     Sulfate reduction     Sulfamethoxazole pharmaceutical wastewater     Electron flow     Recovery    

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标题 作者 时间 类型 操作

Occurrence and migration of microplastics and plasticizers in different wastewater and sludge treatmentunits in municipal wastewater treatment plant

期刊论文

Simultaneous nitrification and denitrification in activated sludge system under low oxygen concentration

ZHANG Peng, ZHOU Qi

期刊论文

A review on sustainable reuse applications of Fenton sludge during wastewater treatment

期刊论文

Flocculation behaviors of a novel papermaking sludge-based flocculant in practical printing and dyeingwastewater treatment

期刊论文

Acidogenic sludge fermentation to recover soluble organics as the carbon source for denitrification inwastewater treatment: Comparison of sludge types

Lin Lin, Ying-yu Li, Xiao-yan Li

期刊论文

Techno-economic characteristics of wastewater treatment plants retrofitted from the conventional activatedsludge process to the membrane bioreactor process

期刊论文

Anaerobic treatment of wastewater containing methanol in up-flow anaerobic sludge bed (UASB) reactor

LIN Yishan, HE Yanling, MENG Zhuo, YANG Shucheng

期刊论文

Evaluation of activated sludge properties’ changes in industrial-wastewater pre-treatment: role of residual

期刊论文

Organics Recovery from Waste Activated Sludge In-situ Driving Efficient Nitrogen Removal from Mature

Fangzhai Zhang,Shang Ren,Haoran Liang,Zhaozhi Wang,Ying Yan,Jiahui Wang,Yongzhen Peng,

期刊论文

Innovative method of culturing bdelloid rotifers for the application of wastewater biological treatment

期刊论文

Sludge reduction during brewery wastewater treatment by hydrolyzation-food chain reactor system

LI Lijie, YANG Shuo, WANG Qunhui, LI Xuesong

期刊论文

Promotive effect of pyridine on indole degradation by activated sludge under anoxic conditions

LI Yongmei, GU Guowei, LI Wenshu

期刊论文

Deciphering the effect of sodium dodecylbenzene sulfonate on up-flow anaerobic sludge blanket treatmentof synthetic sulfate-containing wastewater

期刊论文

A hybrid membrane process for simultaneous thickening and digestion of waste activated sludge

Zhiwei WANG, Qiaoying WANG, Zhichao WU, Xinhua WANG,

期刊论文

Feasibility assessment of up-flow anaerobic sludge blanket treatment of sulfamethoxazole pharmaceuticalwastewater

Yi Chen, Shilong He, Mengmeng Zhou, Tingting Pan, Yujia Xu, Yingxin Gao, Hengkang Wang

期刊论文