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关键词

厌氧消化 3

Nd-Fe-B磨削油泥 1

一水硬铝石 1

互养菌（Syntrophus） 1

互营杆菌（Syntrophorhabdaceae） 1

养分消化与吸收 1

内部分子结构 1

再生烧结磁体 1

分子成像 1

分子营养 1

升流式厌氧污泥床（UASB）颗粒污泥 1

厌氧发酵 1

厌氧消化，生物固体，污染，甲基苯丙胺，吸附 1

可持续能源 1

同步辐射应用 1

含油污泥 1

吸附 1

四环素 1

地下水处理厂污泥 1

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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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High-solid anaerobic digestion of sewage sludge: achievements and perspectives

《环境科学与工程前沿（英文）》 2021年 第15卷 第4期 doi: 10.1007/s11783-020-1364-4

摘要：

• High-solid anaerobic digestion (HS-AD) of sewage sludge (SS) is overviewed.

关键词： High-solid effect     Anaerobic fermentation     Methane production     Biodegradability     Sludge treatment    

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Influencing mechanism of high solid concentration on anaerobic mono-digestion of sewage sludge without

Yuyao ZHANG,Huan LI,Can LIU,Yingchao CHENG

《环境科学与工程前沿（英文）》 2015年 第9卷 第6期   页码 1108-1116 doi: 10.1007/s11783-015-0806-x

摘要： High-solids anaerobic digestion of sewage sludge was a promising process, but high solid concentration negatively influenced methane production. The influencing mechanism was systematically analyzed in this study through a series of static anaerobic digestion experiments at total solids (TS) contents of 3%–15%. The results showed that TS 6% was the boundary between low-solids and high-solids anaerobic digestion, and the accumulative methane yield decreased exponentially when TS increased from 6% to 15%. The performance of anaerobic digestion was directly determined by the efficiency of mass transfer, and the relation between methane yield and sludge diffusive coefficients was well described by a power function. Thus, the increasing TS resulted in an exponential increase in sludge viscosity but an exponential decrease in diffusive coefficient. The blocked mass transfer led to the accumulation of volatile fatty acids (VFAs) and free ammonia. Acetic metabolism was the main process, whereas butyric and propionic metabolisms occurred at the initial stage of high-solids anaerobic digestion. The concentration of VFAs reached the maximum at the initial stage, which were still lower than the threshold influencing methanogens. The concentration of free ammonia increased gradually, and the methanogenesis was inhibited when free ammonia nitrogen exceeded 50 mg·L . Consequently, the deterioration of high-solids anaerobic digestion was related to the blocked mass transfer and the resulting ammonia accumulation.

关键词： anaerobic digestion     methane     sewage sludge     volatile fatty acids     free ammonia    

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Anaerobic digestion of sludge by different pretreatments: Changes of amino acids and microbial community

《环境科学与工程前沿（英文）》 2022年 第16卷 第2期 doi: 10.1007/s11783-021-1458-7

摘要：

•Tryptophan protein, and aromatic protein I/II were the key identified proteins.

关键词： Sludge pretreatments     Dissolved organic nitrogen     Proteins     Amino acids     Structural equation model     Metagenomic sequencing analysis.    

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Distribution and removal of antibiotic resistance genes during anaerobic sludge digestion with alkaline

Mengli Wang, Ruying Li, Qing Zhao

《环境科学与工程前沿（英文）》 2019年 第13卷 第3期 doi: 10.1007/s11783-019-1127-2

摘要：

Sludge digestion is critical to control the spread of ARGs from wastewater to soil.

Fate of ARGs in three pretreatment-AD processes was investigated.

UP was more efficient for ARGs removal than AP and THP in pretreatment-AD process.

The total ARGs concentration showed significant correlation with 16S rRNA gene.

The bacteria carrying ARGs could be mainly affiliated with Proteobacteria.

关键词： Tetracycline resistance genes     Sulfonamide resistance genes     16S rRNA gene     Sludge pretreatment     Anaerobic sludge digestion    

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Comparison of different valent iron on anaerobic sludge digestion: Focusing on oxidation reduction potential

《环境科学与工程前沿（英文）》 2022年 第16卷 第6期 doi: 10.1007/s11783-021-1514-3

摘要：

• ORP value from −278.71 to −379.80 mV showed indiscernible effects on methane yield.

关键词： Enhanced anaerobic sludge digestion     Different iron valence     Oxidation reduction potential     Dissolved organic nitrogen     Microbial community    

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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

《环境科学与工程前沿（英文）》 2018年 第12卷 第6期 doi: 10.1007/s11783-018-1050-y

摘要：

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%.

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

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Increasing the performance of anaerobic digestion: Pilot scale experimental study for thermal hydrolysisof mixed sludge

S.I. PEREZ-ELVIRA, M. FDZ-POLANCO, F. FDZ-POLANCO,

《环境科学与工程前沿（英文）》 2010年 第4卷 第2期   页码 135-141 doi: 10.1007/s11783-010-0024-5

摘要： The performance of a pilot plant operation combining thermal hydrolysis (170°C, 30 min) and anaerobic digestion (AD) was studied, determining the main properties for samples of fresh mixed sludge, hydrolyzed sludge, and digested sludge, in order to quantify the thermal pretreatment performance (disintegration, solubilisation, and dewaterability) and its impact on the anaerobic digestion performance (biodegradability, volatile solids reduction, and digester rheology) and end product characteristics (dewaterability, sanitation, organic and nitrogen content). The disintegration achieved during the thermal treatment enhances the sludge centrifugation, allowing a 70% higher total solids concentration in the feed to anaerobic digestion. The digestion of this sludge generates 40% more biogas in half the time, due to the higher solids removal compared to a conventional digester. The waste generated can be dewatered by centrifugation to 7% dry solids without polymer addition, and is pathogen free.

关键词： anaerobic digestion (AD)     biogas     performance     sludge     thermal hydrolysis    

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市政污泥热水解—真菌发酵产菌丝纤维回收有机质资源的研究 Article

梁嘉晋, 李炳, 温磊, 李若泓, 李晓岩

《工程（英文）》 2021年 第7卷 第2期   页码 203-211 doi: 10.1016/j.eng.2020.09.002

摘要：

市政污泥的处理已成为许多大城市的环境治理难题。本研究提出了基于热水解—真菌发酵—厌氧消化的三阶段精炼策略，旨在实现市政污泥的减量化和资源化。在市政污泥热水解处理中，当热水解温度由140 ℃升至180 ℃时，可以显著地提升市政污泥的减量效果和有机物的释放效率（p < 0.05）。市政污泥经过140 ℃、160 ℃和180 ℃两级热水解处理后，总挥发性固体（TVS）的去除率分别为36.6%、47.7%和58.5%，总有机碳（TOC）的溶解释放效率分别达到28.0%、38.0%和45.1%。在160 ℃下，污泥热水解上清液中的多糖和蛋白质的含量最为丰富，而在180 ℃时，由于在热水解过程中发生了美拉德反应，污泥热水解上清液的腐殖酸类物质的含量显著增加（p < 0.05）。采用黑曲霉（Aspergillus niger）进行真菌发酵，可以将市政污泥热水解上清液中的有机物转化为高附加值的菌丝纤维。在140 ℃和160 ℃下，污泥热水解上清液经过真菌发酵后，菌丝纤维的生物量分别达到1.30 g·L–1和1.27 g·L–1，对应的有机物转化率为24.6%和24.0%。从污泥热水解上清液真菌中回收的菌丝纤维可以用于生产纸基材料等高附加值产品。菌丝纤维纸结构致密，具有较好的力学性能，抗张强度可以达到10.75 N·m·g–1。在160 ℃下，污泥热水解上清液经真菌发酵耦合厌氧消化两级生物处理，能将热水解上清液超过75%的有机物进行综合利用以回收菌丝纤维和沼气。

关键词： 市政污泥     热水解     真菌发酵     菌丝纤维     厌氧消化     污泥处理    

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Sulfate digestion process for high purity TiO

T. A. LASHEEN

《化学科学与工程前沿（英文）》 2009年 第3卷 第2期   页码 155-160 doi: 10.1007/s11705-009-0005-z

摘要： A titania slag product of Rosetta ilmenite assaying 72% TiO is treated by the sulfate process option of the pigmentary TiO manufacture. The relevant factors of acid concentration, particle size, slag/acid ratio besides the reaction temperature, and time have been studied. After dissolving the cured mass in dilute acid and clarification, the obtained solution was subjected to hydrolysis of its titanium content. The final product was bleached under reducing conditions to redissolve the residual coloring impurities before being dewatered and calcinated. The obtained results indicated that a leaching efficiency of about 92% was realized due to the presence of some refractory components in the working slag material, namely, rutile and magnesium iron titanate. The obtained white pigment assay attained up to 99.85% TiO , while the analyzed impurities involve 77 ppm Mn and only 14 and 7 ppm of total iron and V, respectively.

关键词： titania     slag     sulfate process     pigment    

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Impact of roxarsone on the UASB reactor performance and its degradation

Mengchuan Shui, Feng Ji, Rui Tang, Shoujun Yuan, Xinmin Zhan, Wei Wang, Zhenhu Hu

《环境科学与工程前沿（英文）》 2016年 第10卷 第6期 doi: 10.1007/s11783-016-0871-9

摘要： Impact of continuous ROX addition on performance of UASB reactor was investigated With continuous ROX addition, severe inhibition to methanogenic activity occurred ROX addition caused the changes in the morphology and bacterial diversity of AGS A possible biotransformation pathway of ROX in the UASB reactor was proposed 60%–70% of the arsenic was discharged to the effluent, and 30%–40% was precipitated Roxarsone (3-nitro-4-hydroxyphenylarsonic acid, ROX) has been widely used for decades as an organoarsenic feed additive to control intestinal parasites and improve feed efficiency in animal production. However, most of the ROX is excreted into the manure, causing arsenic contamination in wastewater. The arsenic compounds are toxic to microorganisms, but the influence of continuous ROX loading on upflow anaerobic sludge blanket (UASB) reactor is still unknown. In this study, the impact of ROX and its degradation products on the performance of the UASB reactor and the degradation and speciation of ROX in the reactor were investigated. The UASB reactor (hydraulic retention time: 1.75 d) was operated using synthetic wastewater supplemented with ROX for a period of 260 days. With continuous ROX addition at 25.0 mg?L , severe inhibition to methanogenic activity occurred after 87 days operation accompanied with an accumulation of volatile fatty acids (VFAs) and a decline in pH. The decrease of added ROX concentration to 13.2 mg?L did not mediate the inhibition. As(III), As(V), MMA(V), DMA(V), HAPA and an unknown arsenic compound were detected in the reactor, and a possible biotransformation pathway of ROX was proposed. Mass balance analysis of arsenic indicated that 60%–70% of the arsenic was discharged into the effluent, and 30%–40% was precipitated in the reactor. The results from this study suggest that we need to pay attention to the stability in the UASB reactors treating organoarsenic-contaminated manure and wastewater, and the effluent and sludge from the reactor to avoid diffusion of arsenic contamination.

关键词： Anaerobic digestion     Anaerobic granular sludge (AGS)     Arsenic species     Impact     Roxarsone (ROX)     UASB reactor    

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Mesophilic and thermophilic anaerobic digestion of swine manure with sulfamethoxazole and norfloxacin

《环境科学与工程前沿（英文）》 2021年 第15卷 第5期 doi: 10.1007/s11783-020-1342-x

摘要：

• SMX addition had negative effect on acetoclastic methanogens in mesophilic AD.

关键词： Pig manure     Antibiotics     Anaerobic digestion     Resistance genes     Microbial community    

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Degradation of polyacrylamide (PAM) and methane production by mesophilic and thermophilic anaerobic digestion

Mona Akbar, Muhammad Farooq Saleem Khan, Ling Qian, Hui Wang

《环境科学与工程前沿（英文）》 2020年 第14卷 第6期 doi: 10.1007/s11783-020-1277-2

摘要： Abstract • PAM degradation in thermophilic AD in comparison with mesophilic AD. • PAM degradation and its impact on thermophilic and mesophilic AD. • Enhanced methane yield in presence of PAM during thermophilic and mesophilic AD. • PAM degradation and microbial community analysis in thermophilic and mesophilic AD. Polyacrylamide (PAM) is generally employed in wastewater treatment processes such as sludge dewatering and therefore exists in the sludge. Furthermore, it degrades slowly and can deteriorate methane yield during anaerobic digestion (AD). The impact or fate of PAM in AD under thermophilic conditions is still unclear. This study mainly focuses on PAM degradation and enhanced methane production from PAM-added sludge during 15 days of thermophilic (55°C) AD compared to mesophilic (35°C) AD. Sludge and PAM dose from 10 to 50 g/kg TSS were used. The results showed that PAM degraded by 76% to 78% with acrylamide (AM) content of 0.2 to 3.3 mg/L in thermophilic AD. However, it degraded only 27% to 30% with AM content of 0.5 to 7.2 mg/L in mesophilic AD. The methane yield was almost 230 to 238.4 mL/g VSS on the 8th day in thermophilic AD but was 115.2 to 128.6 mL/g VSS in mesophilic AD. Mechanism investigation revealed that thermophilic AD with continuous stirring not only enhanced PAM degradation but also boosted the organics release from the sludge with added PAM and gave higher methane yield than mesophilic AD.

关键词： Polyacrylamide (PAM) degradation     Acrylamide (AM)     Mesophilic anaerobic digestion     Thermophilic anaerobic digestion     Methane production    

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ALKALINE PRETREATMENT AND AIR MIXING FOR IMPROVEMENT OF METHANE PRODUCTION FROM ANAEROBIC CO-DIGESTION

《农业科学与工程前沿（英文）》 2023年 第10卷 第3期   页码 424-436 doi: 10.15302/J-FASE-2023506

摘要：

● Integration of alkaline pretreatment and air mixing for co-digestion was validated.

关键词： sodium hydroxide     air injection     cumulative methane yield     kinetic modeling analysis     digestate    

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Distribution of PCDD/Fs in a food waste anaerobic digestion process with biogas utilization

《环境科学与工程前沿（英文）》 2023年 第17卷 第11期 doi: 10.1007/s11783-023-1736-7

摘要：

● The PCDD/F distribution patterns of the FW-AD process were investigated.

关键词： Biological treatment     MSW classification     Mass balance     Solid digestate    

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标题 作者 时间 类型 操作

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

High-solid anaerobic digestion of sewage sludge: achievements and perspectives

期刊论文

Influencing mechanism of high solid concentration on anaerobic mono-digestion of sewage sludge without

Yuyao ZHANG,Huan LI,Can LIU,Yingchao CHENG

期刊论文

Anaerobic digestion of sludge by different pretreatments: Changes of amino acids and microbial community

期刊论文

Distribution and removal of antibiotic resistance genes during anaerobic sludge digestion with alkaline

Mengli Wang, Ruying Li, Qing Zhao

期刊论文

Comparison of different valent iron on anaerobic sludge digestion: Focusing on oxidation reduction potential

期刊论文

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

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

期刊论文

Increasing the performance of anaerobic digestion: Pilot scale experimental study for thermal hydrolysisof mixed sludge

S.I. PEREZ-ELVIRA, M. FDZ-POLANCO, F. FDZ-POLANCO,

期刊论文

市政污泥热水解—真菌发酵产菌丝纤维回收有机质资源的研究

梁嘉晋, 李炳, 温磊, 李若泓, 李晓岩

期刊论文

Sulfate digestion process for high purity TiO

T. A. LASHEEN

期刊论文

Impact of roxarsone on the UASB reactor performance and its degradation

Mengchuan Shui, Feng Ji, Rui Tang, Shoujun Yuan, Xinmin Zhan, Wei Wang, Zhenhu Hu

期刊论文

Mesophilic and thermophilic anaerobic digestion of swine manure with sulfamethoxazole and norfloxacin

期刊论文

Degradation of polyacrylamide (PAM) and methane production by mesophilic and thermophilic anaerobic digestion

Mona Akbar, Muhammad Farooq Saleem Khan, Ling Qian, Hui Wang

期刊论文

ALKALINE PRETREATMENT AND AIR MIXING FOR IMPROVEMENT OF METHANE PRODUCTION FROM ANAEROBIC CO-DIGESTION

期刊论文

Distribution of PCDD/Fs in a food waste anaerobic digestion process with biogas utilization

期刊论文