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A heterotrophic nitrification-aerobic denitrification bacterium TJPU05 suitable for nitrogen removal

《环境科学与工程前沿（英文）》 2022年 第16卷 第6期 doi: 10.1007/s11783-021-1503-6

摘要：

• H. venusta TJPU05 showed excellent HN-AD ability at high salinity.

关键词： Salt-tolerant bacteria     H. venusta TJPU05     Heterotrophic nitrification and aerobic denitrification     High-salinity wastewater    

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Achievement of high rate nitritation with aerobic granular sludge reactors enhanced by sludge recirculation

Zulkifly JEMAAT,Josep Anton TORA,Albert BARTROLI,Julián CARRERA,Julio PEREZ

《环境科学与工程前沿（英文）》 2015年 第9卷 第3期   页码 528-533 doi: 10.1007/s11783-014-0641-5

摘要： A ratio control strategy has been used to demonstrate the feasibility of this automatic control procedure for the achievement of stable full and partial nitritation. The control strategy assured constant ratio between the dissolved oxygen (DO) and the total ammonia nitrogen (TAN) concentrations in the bulk liquid of aerobic granular sludge reactors operating in continuous mode. Three different set-ups with different reactor capacities were used (3, 110, and 150 L). High strength synthetic wastewaters and reject water were tested with similar performance. Achieved nitrogen loading rates ranged between 0.4 and 6.1 kgN·m ·d , at temperatures between 20°C and 30°C. Granular sludge and nitritation were stable in the long term continuous operation of the reactors. Suitable stable effluent for Anammox has been obtained using the desired TAN setpoint (i.e. 50% of influent ammonium oxidation). An existing biofilm model developed incorporating the implemented control loops and validated in a previous publication was used to investigate the effects of the ammonium concentration of the influent and the biofilm density on the achievement of full nitritation. The model demonstrated how sludge recirculation events led to a stable and significant increase of the biomass concentration in the reactor, which in turn resulted in the achievement of high nitrogen loading rates, due to the action of the control strategy. The model predicted an enhancement of stable full nitritation at higher ammonium concentrations in the influent. Poor influence of the biofilm density in the achievement of full nitritation was predicted with the model.

关键词： partial nitrification     reject water     high strength ammonium wastewater     closed-loop control    

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Removal of sulfamethoxazole and trimethoprim from reclaimed water and the biodegradation mechanism

Qinqin Liu, Miao Li, Xiang Liu, Quan Zhang, Rui Liu, Zhenglu Wang, Xueting Shi, Jin Quan, Xuhui Shen, Fawang Zhang

《环境科学与工程前沿（英文）》 2018年 第12卷 第6期 doi: 10.1007/s11783-018-1048-5

摘要：

The artificial composite soil treatment system could efficiently remove SMX and TMP by biodegradation mechanism.

Bacillus subtilis from column reactors degraded SMX and TMP efficiently.

Bacillus subtilis biodegrades TMP to NH4+, and then converts NH4+ to NO3–.

关键词： Trimethoprim     Sulfamethoxazole     Biodegradation     Aerobic nitrification    

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Advanced nitrogen removal using pilot-scale SBR with intelligent control system built on three layer network

YANG Qing, WANG Shuying, YANG Anming, GUO Jianhua, BO Fengyang

《环境科学与工程前沿（英文）》 2007年 第1卷 第1期   页码 33-38 doi: 10.1007/s11783-007-0006-4

摘要： Since eutrophication has become increasingly severe in China, nitrogen and phosphorous have been the concern of wastewater treatment, especially nitrogen removal. The stabilization of the intelligent control system and nitrogen removal efficiency were investigated in a pilot-scale aerobic-anoxic sequencing batch reactor (SBR) with a treatment capacity of 60 m/d. Characteristic points on the profiles of dissolved oxygen (DO), pH, and oxidation reduction potential (ORP) could exactly reflect the process of nitrification and denitrification. Using the intelligent control system not only could save energy, but also could achieve advanced nitrogen removal. Applying the control strategy water quality of the effluent could stably meet the national first discharge standard during experiment of 10 months. Even at low temperature ( = 13vH), chemical oxygen demand (COD) and total nitrogen (TN) in the effluent were under 50 and 5 mg/L, respectively.

关键词： eutrophication     pilot-scale aerobic-anoxic     stabilization     oxidation reduction     nitrification    

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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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Removal of trimethoprim and sulfamethoxazole in artificial composite soil treatment systems and diversity of microbial communities

Qinqin Liu, Miao Li, Rui Liu, Quan Zhang, Di Wu, Danni Zhu, Xuhui Shen, Chuanping Feng, Fawang Zhang, Xiang Liu

《环境科学与工程前沿（英文）》 2019年 第13卷 第2期 doi: 10.1007/s11783-019-1112-9

摘要：

• Novel ACST allowed biodegradation to effectively remove adsorbed SMX and TMP.

• Ammonia and nitrite were efficiently removed in ACSTs and water quality was improved.

关键词： Trimethoprim     Sulfamethoxazole     Reclaimed water     Biodegradation     Aerobic nitrification     Microbial community    

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Toxic effect of sodium perfluorononyloxy-benzenesulfonate on in aerobic denitrification, cell structure

《环境科学与工程前沿（英文）》 2021年 第15卷 第5期 doi: 10.1007/s11783-021-1391-9

摘要：

• OBS inhibited the growth of P. stutzeri and destroyed its structure.

关键词： Sodium perfluorononyloxy-benzenesulfonate     Aerobic denitrification     Pseudomonas stutzeri     Ecotoxicity     ROS     Persist organic pollutants     Toxicity     Denitrification     Microbiology    

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Optimization of thermophilic anaerobic-aerobic treatment system for Palm Oil Mill Effluent (POME)

Yijing CHAN,Meifong CHONG,Chunglim LAW

《环境科学与工程前沿（英文）》 2015年 第9卷 第2期   页码 334-351 doi: 10.1007/s11783-014-0626-4

摘要： Optimization of an integrated anaerobic-aerobic bioreactor (IAAB) treatment system for the reduction of organic matter (Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD) and Total Suspended Solids (TSS) concentrations) in Palm Oil Mill Effluent (POME) to legal standards with high methane yield was performed for the first time under thermophilic condition (50°C–55°C) by using response surface methodology (RSM). The experiments were conducted based on a central composite rotatable design (CCRD) with three independent operating variables, organic loading rates in anaerobic compartment (OLR ) and mixed liquor volatile suspended solids (MLVSS) concentration in anaerobic (MLVSS ) and aerobic compartments (MLVSS ). The optimum conditions for the POME treatment were determined as OLR of 15.6 g COD·L ·d , MLVSS of 43100 mg·L , and MLVSS of 18600 mg·L , where high aerobic COD, BOD and TSS removal efficiencies of 96.3%, 97.9%, and 98.5% were achieved with treated BOD of 56 mg·L and TSS of 28 mg·L meeting the discharge standard. This optimization study successfully achieved a reduction of 42% in the BOD concentrations of the final treated effluent at a 48% higher OLR as compared to the previous works. Besides, thermophilic IAAB system scores better feasibility and higher effectiveness as compared to the optimized mesophilic system. This is due to its higher ability to handle high OLR with higher overall treatment efficiencies (more than 99.6%), methane yield (0.31 L CH ·g COD ) and purity of methane (67.5%). Hence, these advantages ascertain the applicability of thermophilic IAAB in the POME treatment or even in other high-strength wastewaters treatment.

关键词： palm oil mill effluent (POME)     anaerobic     aerobic     thermophilic     biogas     optimization    

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Characteristics of night soil and leaf co-composting using aerobic static method

Xiaojie SUN, Dunqiu WANG, Wenjing LU, Hongtao WANG

《环境科学与工程前沿（英文）》 2012年 第6卷 第3期   页码 421-427 doi: 10.1007/s11783-011-0380-9

摘要： The main purpose of this work is to investigate the characteristics of night soil and leaf co-composting using aerobic static composting method. Three influencing factors, including proportion of night soil and leaf, aeration rate and aeration pattern, were investigated through the evolution of the principal physicochemical properties, i.e., temperature, oxygen consumption rate, organic matters, moisture content, carbon, nitrogen, carbon-to-nitrogen ratio and Germination index (GI). It was found that the 3∶1 (w∶w) mixture of night soil and leaf was capable of achieving the highest composting temperature, longest retention time of high temperature (55°C), and fastest organic matter degradation. The 0.14 m ·min ·m aeration rate was most beneficial to composting, and the mixture of night soil and leaf maintained the highest temperature for the longest duration and achieved the highest CO content and GI. The continuous aeration pattern during composting was superior to an intermittent aeration pattern, since the latter delayed the composting process.

关键词： night soil     leaf     aerobic compost     aeration rate     aeration pattern    

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Methanation and chemolitrophic nitrogen removal by an anaerobic membrane bioreactor coupled partial nitrification

《环境科学与工程前沿（英文）》 2023年 第17卷 第6期 doi: 10.1007/s11783-023-1668-2

摘要：

● Efficient carbon methanation and nitrogen removal was achieved in AnMBR-PN/A system.

关键词： Anaerobic membrane bioreactor     Partial nitrification/Anammox     Carbon separation     Chemolitrophic nitrogen removal    

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ROOT EXUDATES FROM CANOLA EXHIBIT BIOLOGICAL NITRIFICATION INHIBITION AND ARE EFFECTIVE IN INHIBITING

《农业科学与工程前沿（英文）》 2022年 第9卷 第2期   页码 177-186 doi: 10.15302/J-FASE-2021421

摘要：

A range of plant species produce root exudates that inhibit ammonia-oxidizing microorganisms. This biological nitrification inhibition (BNI) capacity can decrease N loss and increase N uptake from the rhizosphere. This study sought evidence for the existence and magnitude of BNI capacity in canola ( Brassica napus). Seedlings of three canola cultivars, Brachiaria humidicola(BNI positive) and wheat ( Triticum aestivum) were grown in a hydroponic system. Root exudates were collected and their inhibition of the ammonia oxidizing bacterium, Nitrosospira multiformis, was tested. Subsequent pot experiments were used to test the inhibition of native nitrifying communities in soil. Root exudates from canola significantly reduced nitrification rates of both N. multiformis cultures and native soil microbial communities. The level of nitrification inhibition across the three cultivars was similar to the well-studied high-BNI species B. humidicola. BNI capacity of canola may have implications for the N dynamics in farming systems and the N uptake efficiency of crops in rotational farming systems. By reducing nitrification rates canola crops may decrease N losses, increase plant N uptake and encourage microbial N immobilization and subsequently increase the pool of organic N that is available for mineralization during the following cereal crops.

关键词： ammonia oxidizing microorganisms / biological nitrification inhibition / farming rotations / nitrogen cycling / nitrogen use efficiency    

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Improvement of nitrification efficiency by bioaugmentation in sequencing batch reactors at low temperature

Di CUI,Ang LI,Tian QIU,Rui CAI,Changlong PANG,Jihua WANG,Jixian YANG,Fang MA,Nanqi REN

《环境科学与工程前沿（英文）》 2014年 第8卷 第6期   页码 937-944 doi: 10.1007/s11783-014-0668-7

摘要： Bioaugmentation is an effective method of treating municipal wastewater with high ammonia concentration in sequencing batch reactors (SBRs) at low temperature (10°C). The cold-adapted ammonia- and nitrite- oxidizing bacteria were enriched and inoculated, respectively, in the bioaugmentation systems. In synthetic wastewater treatment systems, the average -N removal efficiency in the bioaugmented system (85%) was much higher than that in the unbioaugmented system. The effluent -N concentration of the bioaugmented system was stably below 8 mg·L after 20 d operation. In municipal wastewater systems with bioaugmentation, the effluent -N concentration was below 8 mg·L after 15 d operation. The average -N removal efficiency in unbioaugmentation system (about 82%) was lower compared with that in the bioaugmentation system. By inoculating the cold-adapted nitrite-oxidizing bacteria (NOB) into the SBRs after 10 d operation, the nitrite concentration decreased rapidly, reducing the -N accumulation effectively at low temperature. The functional microorganisms were identified by PCR-DGGE, including uncultured sp., uncultured sp., sp. and uncultured sp. The results suggested that the cold-adapted microbial agent of ammonia-oxidizing bacteria (AOB) and NOB could accelerate the start-up and promote achieving the stable operation of the low-temperature SBRs for nitrification.

关键词： nitrification     sequencing batch reactors (SBRs)     bioaugmentation     low temperature    

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Aerobic granulation of pure bacterial strain

ADAV Sunil S., LEE Duu-Jong

《环境科学与工程前沿（英文）》 2008年 第2卷 第4期   页码 461-467 doi: 10.1007/s11783-008-0066-0

摘要： The objective of this study is to cultivate aerobic granules by pure bacterial strain, , in a sequencing batch reactor. Stable granules sized 2.0–2.2 mm were formed in the reactor after a five-week cultivation. These granules exhibited excellent settling attributes, and degraded phenol at rates of 1.49 and 1.19 g phenol/(g VSS·d) at 250 and 1500 mg/L of phenol concentration, respectively. Confocal laser scanning microscopic test results show that was distributed over the initial small aggregates, and the outer edge of the granule was away from the core regime in the following stage.

关键词： following     excellent settling     phenol/     sequencing     microscopic    

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Environmental effects and risk control of antibiotic resistance genes in the organic solid waste aerobic

《环境科学与工程前沿（英文）》 2021年 第15卷 第6期 doi: 10.1007/s11783-021-1415-5

摘要：

• ARGs were detected in livestock manure, sludge, food waste and fermentation dregs.

关键词： Antibiotic resistance genes     Organic solid waste     Aerobic composting     Livestock manure     Sludge    

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Nitrogen-retaining property of compost in an aerobic thermophilic composting reactor for the sanitary

Fan BAI, Xiaochang WANG,

《环境科学与工程前沿（英文）》 2010年 第4卷 第2期   页码 228-234 doi: 10.1007/s11783-010-0022-7

摘要： Aerobic composting is a method for the sanitary disposal of human feces as is used in bio-toilet systems. As the products of composting can be utilized as a fertilizer, it would be beneficial if the composting conditions could be more precisely controlled for the retention of fecal nitrogen as long as possible in the compost. In this study, batch experiments were conducted using a closed aerobic thermophilic composting reactor with sawdust as the bulk matrix to simulate the condition of a bio-toilet for the sanitary disposal of human feces. Attention was paid to the characteristics of nitrogen transformation. Under the controlled conditions of temperature at 60°C, moisture content at 60%, and a continuous air supply, more than 70% fecal organic removal was obtained, while merely 17% fecal nitrogen loss was observed over a two-week composting period. The nitrogen loss was found to occur mainly in the first 24 h with the rapid depletion of inorganic nitrogen but with an almost unchanged organic nitrogen content. The fecal NH–N which was the main component of the inorganic nitrogen (>90%) decreased rapidly in the first day, decreased at a slower rate over the following days, and finally disappeared entirely. The depletion of NH–N was accompanied by the accumulation of NH gas in the ammonia absorber connected to the reactor. A mass balance between the exhausted NH gas and the fecal NH–N content in the first 24 hours indicated that the conversion of ammonium into gaseous ammonia was the main reason for nitrogen loss. Thermophilic composting could be considered as a way to keep a high organic nitrogen content in the compost for better utilization as a fertilizer.

关键词： nitrogen retention     composting reactor     human feces     aerobic     thermophilic     fertilizer    

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标题 作者 时间 类型 操作

A heterotrophic nitrification-aerobic denitrification bacterium TJPU05 suitable for nitrogen removal

期刊论文

Achievement of high rate nitritation with aerobic granular sludge reactors enhanced by sludge recirculation

Zulkifly JEMAAT,Josep Anton TORA,Albert BARTROLI,Julián CARRERA,Julio PEREZ

期刊论文

Removal of sulfamethoxazole and trimethoprim from reclaimed water and the biodegradation mechanism

Qinqin Liu, Miao Li, Xiang Liu, Quan Zhang, Rui Liu, Zhenglu Wang, Xueting Shi, Jin Quan, Xuhui Shen, Fawang Zhang

期刊论文

Advanced nitrogen removal using pilot-scale SBR with intelligent control system built on three layer network

YANG Qing, WANG Shuying, YANG Anming, GUO Jianhua, BO Fengyang

期刊论文

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

ZHANG Peng, ZHOU Qi

期刊论文

Removal of trimethoprim and sulfamethoxazole in artificial composite soil treatment systems and diversity of microbial communities

Qinqin Liu, Miao Li, Rui Liu, Quan Zhang, Di Wu, Danni Zhu, Xuhui Shen, Chuanping Feng, Fawang Zhang, Xiang Liu

期刊论文

Toxic effect of sodium perfluorononyloxy-benzenesulfonate on in aerobic denitrification, cell structure

期刊论文

Optimization of thermophilic anaerobic-aerobic treatment system for Palm Oil Mill Effluent (POME)

Yijing CHAN,Meifong CHONG,Chunglim LAW

期刊论文

Characteristics of night soil and leaf co-composting using aerobic static method

Xiaojie SUN, Dunqiu WANG, Wenjing LU, Hongtao WANG

期刊论文

Methanation and chemolitrophic nitrogen removal by an anaerobic membrane bioreactor coupled partial nitrification

期刊论文

ROOT EXUDATES FROM CANOLA EXHIBIT BIOLOGICAL NITRIFICATION INHIBITION AND ARE EFFECTIVE IN INHIBITING

期刊论文

Improvement of nitrification efficiency by bioaugmentation in sequencing batch reactors at low temperature

Di CUI,Ang LI,Tian QIU,Rui CAI,Changlong PANG,Jihua WANG,Jixian YANG,Fang MA,Nanqi REN

期刊论文

Aerobic granulation of pure bacterial strain

ADAV Sunil S., LEE Duu-Jong

期刊论文

Environmental effects and risk control of antibiotic resistance genes in the organic solid waste aerobic

期刊论文

Nitrogen-retaining property of compost in an aerobic thermophilic composting reactor for the sanitary

Fan BAI, Xiaochang WANG,

期刊论文