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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,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 3,   Pages 272-279 doi: 10.1007/s11783-010-0234-x

Abstract: A hybrid membrane process for simultaneous sludge thickening and digestion (MSTD) was studied.

Keywords： membrane filtration     sludge digestion     sludge thickening     waste activated sludge    

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Co-fermentation of waste activated sludge with food waste for short-chain fatty acids production: effect

Leiyu FENG, Yuanyuan YAN, Yinguang CHEN

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 4,   Pages 623-632 doi: 10.1007/s11783-011-0334-2

Abstract: Effect of pH ranging from 4.0 to 11.0 on co-fermentation of waste activated sludge (WAS) with food wasteExperimental results showed that the addition of food waste significantly improved the performance ofand 7911.7 mg COD·L , whereas in the blank tests (no pH adjustment, pH 8.0 (blank test 1), no food wastepH 8.0 a higher volatile suspended solids (VSS) reduction of 16.6% for the mixture of WAS and food wastethan the sole WAS indicated a synergistic effect existing in fermentation system with WAS and food waste

Keywords： waste activated sludge (WAS)     food waste     co-fermentation     short-chain fatty acids (SCFAs)     pH     synergistic    

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Upgrading VFAs bioproduction from waste activated sludge via co-fermentation with soy sauce residue

Yanqing Duan, Aijuan Zhou, Kaili Wen, Zhihong Liu, Wenzong Liu, Aijie Wang, Xiuping Yue

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 1, doi: 10.1007/s11783-019-1086-7

Abstract:

SSR addition upgraded VFAs production from WAS.

Structure modification by pretreatments led to performance distinctions.

Distinctions in microbial community was observed by pretreatments selection.

Up to 0.49‒0.65 billion €/year of market value potential was preliminary estimated.

Keywords： Waste activated sludge (WAS)     Soy sauce residue (SSR)     Sludge conditioning     Volatile fatty acids (VFAs)    

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Fate of proteins of waste activated sludge during thermal alkali pretreatment in terms of sludge protein

Xiaoli Song, Zhenghua Shi, Xiufen Li, Xinhua Wang, Yueping Ren

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 2, doi: 10.1007/s11783-019-1114-7

Abstract: itemcontent>

Over 90 min of TAH at the optimal condition, 67.59% sludge

Keywords： Sludge flocs     Microbial cells     Hydrolysate     Protein breakdown     Melanoidin    

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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,

Engineering doi: 10.1016/j.eng.2023.03.005

Abstract: The sustainable recovery and utilization of sludge bioenergy within a circular economy context has drawninnovative biotechnology based on free nitrous acid (FNA) to realize sustainable organics recovery from wasteactivated sludge (WAS) in-situ, driving efficient nitrogen removal from ammonia rich matureAn ultra-fast sludge reduction rate of 4.89 kg·m−3·d−1 and nitrogen removal rateoxygen demand organics were recovered per operational cycle, with 95.2% nitrogen removal and 53.4% sludge

Keywords： Waste activated sludge     Bioresource recovery     Simultaneous treatment of wastewater and sludge     Mature landfill    

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Evaluating the impact of sulfamethoxazole on hydrogen production during dark anaerobic sludge fermentation

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 1, doi: 10.1007/s11783-023-1607-2

Abstract:

● SMX promotes hydrogen production from dark anaerobic sludge fermentation

Keywords： Sulfamethoxazole     Hydrogen production     Dark anaerobic fermentation     Waste activated sludge    

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Enhanced dewatering characteristics of waste activated sludge with Fenton pretreatment: effectiveness

Guangyin ZHEN, Xueqin LU, Baoying WANG, Youcai ZHAO, Xiaoli CHAI, Dongjie NIU, Tiantao ZHAO

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 2,   Pages 267-276 doi: 10.1007/s11783-013-0530-3

Abstract: In this work, the enhanced dewaterabing characteristics of waste activated sludge using Fenton pretreatmentThe results indicate that Fenton pretreatment is an effective technique for advanced waste activatedsludge dewatering.The enhancement of sludge dewaterability by Fenton’s reagent lies in the migration of sludge bound waterdue to the disintegration of sludge flocs and microbial cells lysis.

Keywords： Fenton pretreatment     response surface methodology (RSM)     capillary suction time (CST)     dewaterabilty     molecular weight distribution    

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Roles of acid-producing bacteria in anaerobic digestion of waste activated sludge

Sijia Ai, Hongyu Liu, Mengjie Wu, Guangming Zeng, Chunping Yang

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 6, doi: 10.1007/s11783-018-1050-y

Abstract:

Three acid-producing strains were isolated and identified.

The isolated bacteria accelerated the anaerobic digestion processes.

Bacillus coagulans improved TCOD removal, VS removal and biogas production.

The optimal inoculum concentration of Bacillus coagulans AFB-1 was 30%.

Keywords： Anaerobic digestion     Waste activated sludge     Acid-producing bacteria     Bacillus coagulans    

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New insights into different surfactants’ impacts on sludge fermentation: Focusing on the particular metabolic

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 8, doi: 10.1007/s11783-022-1527-6

Abstract:

• The promoting effects for VFA generation follow the order of APG>SDBS>HTAB.

Keywords： Waste activated sludge (WAS)     Volatile fatty acids (VFA)     Surfactant types     Functional microorganisms    

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Machine learning enabled prediction and process optimization of VFA production from riboflavin-mediated sludge

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 11, doi: 10.1007/s11783-023-1735-8

Abstract:

● Data-driven approach was used to simulate VFA production from WAS fermentation.

Keywords： Machine learning     Volatile fatty acids     Riboflavin     Waste activated sludge     eXtreme Gradient Boosting    

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Responses of microbial interactions to elevated salinity in activated sludge microbial community

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 5, doi: 10.1007/s11783-023-1660-x

Abstract:

● Salinity led to the elevation of NAR over 99.72%.

Keywords： Elevated salinity     Activated sludge system     Pollution removal     Microbial interactions     Competitive relationship    

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Comparison between inhibitor and uncoupler for minimizing excess sludge production of an activated sludge

CHEN Guowei, XI Pengge, XU Deqian, YU Hanqing

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 63-66 doi: 10.1007/s11783-007-0012-6

Abstract: In order to study the minimization of excess sludge production, the reduction in the excess sludge productionThe experimental results show that such an addition could effectively reduce the production of excess sludgeestablished in this work, energy uncoupling coefficient () was used to evaluate the reduction in excess sludgethe presence of dNP, and that dNP was an effective uncoupler for reducing the production of excess activatedsludge without affecting the microbial respiration activity.

Keywords： uncoupling coefficient     Cu     minimization     presence     uncoupling    

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Modification of the activated sludge model for chemical dosage

Shuai MA,Siyu ZENG,Xin DONG,Jining CHEN,Gustaf OLSSON

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 4,   Pages 694-701 doi: 10.1007/s11783-014-0732-3

Abstract: Full-scale experiments have been carried out to adapt the activated sludge model ASM2d to include thePhosphorus removal rates, nitrification rates, as well as pH and sludge settling performance, were evaluatedhigh mole concentrations, Fe addition results in a higher phosphorus removal rate than Al ; 2) the sludgesettling velocity will increase due to the metal addition; 3) the respiration rate of the activatedsludge is decreased more by the dosage of Al than Fe ; 4) the inhibition of Al on the nitrification

Keywords： chemical precipitation     benchmark simulation model     phosphorus removal     respiratory rate     sludge settling     activated sludge model    

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Tank-dependence of the functionality and network differentiation of activated sludge community in a full-scale

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 3, doi: 10.1007/s11783-023-1636-x

Abstract:

● Environmental parameters affected functional bacteria and network associations.

Keywords： Activated sludge     Bacterial community     Tank-dependence     Network association     Functional bacteria    

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Cultivation of aerobic granular sludge in a conventional, continuous flow, completely mixed activatedsludge system

Xi CHEN,Linjiang YUAN,Wenjuan LU,Yuyou LI,Pei LIU,Kun NIE

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 2,   Pages 324-333 doi: 10.1007/s11783-014-0627-3

Abstract: Aerobic granules were formed in a conventional, continuous flow, completely mixed activated sludge systemThe reactor was inoculated with seed sludge containing few filaments and fed with synthetic municipalThe settling time of the sludge and the average dissolved oxygen (DO) of the reactor were 2 h and 4.2The reactor was agitated by a stirrer, with a speed of 250 r·min , to ensure good mixing．The granular sludgehad good settleability, and the sludge volume index (SVI) was between 50 and 90 mL·g .

Keywords： aerobic granular sludge     completely mixed activated sludge system (CMAS)     continuous flow     shear force     filamentous    

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Title Author Date Type Operation

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

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

Journal Article

Co-fermentation of waste activated sludge with food waste for short-chain fatty acids production: effect

Leiyu FENG, Yuanyuan YAN, Yinguang CHEN

Journal Article

Upgrading VFAs bioproduction from waste activated sludge via co-fermentation with soy sauce residue

Yanqing Duan, Aijuan Zhou, Kaili Wen, Zhihong Liu, Wenzong Liu, Aijie Wang, Xiuping Yue

Journal Article

Fate of proteins of waste activated sludge during thermal alkali pretreatment in terms of sludge protein

Xiaoli Song, Zhenghua Shi, Xiufen Li, Xinhua Wang, Yueping Ren

Journal Article

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,

Journal Article

Evaluating the impact of sulfamethoxazole on hydrogen production during dark anaerobic sludge fermentation

Journal Article

Enhanced dewatering characteristics of waste activated sludge with Fenton pretreatment: effectiveness

Guangyin ZHEN, Xueqin LU, Baoying WANG, Youcai ZHAO, Xiaoli CHAI, Dongjie NIU, Tiantao ZHAO

Journal Article

Roles of acid-producing bacteria in anaerobic digestion of waste activated sludge

Sijia Ai, Hongyu Liu, Mengjie Wu, Guangming Zeng, Chunping Yang

Journal Article

New insights into different surfactants’ impacts on sludge fermentation: Focusing on the particular metabolic

Journal Article

Machine learning enabled prediction and process optimization of VFA production from riboflavin-mediated sludge

Journal Article

Responses of microbial interactions to elevated salinity in activated sludge microbial community

Journal Article

Comparison between inhibitor and uncoupler for minimizing excess sludge production of an activated sludge

CHEN Guowei, XI Pengge, XU Deqian, YU Hanqing

Journal Article

Modification of the activated sludge model for chemical dosage

Shuai MA,Siyu ZENG,Xin DONG,Jining CHEN,Gustaf OLSSON

Journal Article

Tank-dependence of the functionality and network differentiation of activated sludge community in a full-scale

Journal Article

Cultivation of aerobic granular sludge in a conventional, continuous flow, completely mixed activatedsludge system

Xi CHEN,Linjiang YUAN,Wenjuan LU,Yuyou LI,Pei LIU,Kun NIE

Journal Article