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摘要 ：
Simultaneous partial nitrification, biological phosphorous removal and sludge fermentation in continuous-flow system faced many challenges in wastewater treatment plants (WWTPs). In this study, a novel process was developed to achieve partial nitrification, enhanced biological phosphorus removal and in-situ fermentation (PNPRF) in continuous-flow system dominated by Tetrasphaera treating low carbon/nitrogen ratio (COD/N) real domestic wastewater. After 80 days of operation, no external carbon was added into the influent. Nitrite accumulation ratio (NAR) reached 99.4% and removal efficiency of PO43- -P was 100%. The effluent concentration of total inorganic nitrogen (TIN) was lower than 2 mg/L. Compared with traditional biological nitrogen and phosphorus removal processes, the daily sludge discharge in continuous-flow PNPRF decreased by 61.9%. DNA concentration of the sludge supernatant after anaerobic zone was 2.26-fold of that before anaerobic zone, and percentages of intact cells decreased by 6.9% and necrotic cells increased by 8.3%, indicating that cell lysis caused the reduction of sludge discharge. The negative effect of prolonged anaerobic phase on transcriptional response of nxrB gene was more significant than that of amoA and hao gene, which resulted in stable partial nitrification. The activities of ammonium-oxidizing bacteria (AOB) were higher than that of nitrite-oxidizing bacteria (NOB), and reverse transcriptional PCR (RT-PCR) showed that RNA expression of AOB was higher than that of NOB. Achieving partial nitrification, enhanced biological phosphorus removal and in-situ fermentation in continuous-flow system dominated by Tetrasphaera solved the problems of carbon source deficiency and large amount of sludge discharge in treating real domestic wastewater process.
关键词 ：
Continuous flow Continuous flow Enhanced biological phosphorus removal Enhanced biological phosphorus removal Partial nitrification Partial nitrification Real domestic wastewater Real domestic wastewater Transcriptional level Transcriptional level
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| GB/T 7714 | Fan, Zhiwei , Zeng, Wei , Meng, Qingan et al. Achieving partial nitrification, enhanced biological phosphorus removal and in-situ fermentation (PNPRF) in continuous-flow system and mechanism analysis at transcriptional level [J]. | CHEMICAL ENGINEERING JOURNAL , 2022 , 428 . |
| MLA | Fan, Zhiwei et al. "Achieving partial nitrification, enhanced biological phosphorus removal and in-situ fermentation (PNPRF) in continuous-flow system and mechanism analysis at transcriptional level" . | CHEMICAL ENGINEERING JOURNAL 428 (2022) . |
| APA | Fan, Zhiwei , Zeng, Wei , Meng, Qingan , Liu, Hong , Ma, Chenyang , Peng, Yongzhen . Achieving partial nitrification, enhanced biological phosphorus removal and in-situ fermentation (PNPRF) in continuous-flow system and mechanism analysis at transcriptional level . | CHEMICAL ENGINEERING JOURNAL , 2022 , 428 . |
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摘要 ：
Autotrophic denitrification has become the main contributor to the nitrogen removal from wastewater due to its high efficiency, safety and economy. Effect of Fe on sulfur autotrophic denitrification coupled to heterotrophic denitrification was investigated to enhance the nitrogen removal. Under the substrate ratios of S2O32-:Fe (II):CH3COO– of 1:1:3, 1:3:1 and 3:1:1, the microorganisms were wrapped by Fe minerals, and the normal metabolic pathways were blocked. By adjusting the substrate ratios of S2O32-:CH3COO– of 1:3, 2:2 and 3:1 without Fe (II), the denitrification recovered with the removal efficiency of NO3–-N to 99%. Insufficient addition of S2O32- and CH3COO– promoted the production of NO2–-N and N2O with high percentage of N2O of 5.70%. When S2O32- and CH3COO– were sufficient, the nitrogen removal was effective and N2O production was low (1.35%). Modified Blotzman model and Logistic model were suitable to describe the removal of NO3–-N, modified Logistic model was suitable to reveal the generation of SO42-. Dechloromonas acted as denitrifying bacteria in substrate ratios of S2O32-:CH3COO– of 1:3 and 3:1 up to 58% and 56% at the genus level. Autotrophic Thiobacillus bacteria decreased from 19% (inoculated sludge) to 1% (1:3), 16% (2:2) and 17% (3:1), respectively. Thauera was corresponded to the heterotrophic denitrification which was successfully enriched from 0 (inoculated sludge) to 13% (1:3), 49% (2:2) and 2% (3:1). The different substrate ratios promoted the coexistence of autotrophic and heterotrophic bacteria and cooperated with Fe minerals to improve nitrogen removal from wastewater. © 2021 Elsevier B.V.
关键词 ：
Bacteria Bacteria Denitrification Denitrification Efficiency Efficiency Iron compounds Iron compounds Nitrogen removal Nitrogen removal Sulfur Sulfur
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| GB/T 7714 | Liu, Hong , Zeng, Wei , Fan, Zhiwei et al. Effect of iron on enhanced nitrogen removal from wastewater by sulfur autotrophic denitrification coupled to heterotrophic denitrification under different substrate ratios [J]. | Chemical Engineering Journal , 2021 , 421 . |
| MLA | Liu, Hong et al. "Effect of iron on enhanced nitrogen removal from wastewater by sulfur autotrophic denitrification coupled to heterotrophic denitrification under different substrate ratios" . | Chemical Engineering Journal 421 (2021) . |
| APA | Liu, Hong , Zeng, Wei , Fan, Zhiwei , Li, Jianmin , Zhan, Mengjia , Peng, Yongzhen . Effect of iron on enhanced nitrogen removal from wastewater by sulfur autotrophic denitrification coupled to heterotrophic denitrification under different substrate ratios . | Chemical Engineering Journal , 2021 , 421 . |
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摘要 ：
本研究通过共浸渍-热解法开发了一种铈改性水葫芦生物炭吸附剂(Ce-BC),用以去除实际废水中的磷酸盐,考察了Ce-BC投加量、废水pH值、反应时间及共存的竞争性离子对吸附过程的影响.结果表明,当Ce-BC投加量为0.4 g·L-1,初始磷酸盐溶液pH值介于3～10时,Ce-BC对磷酸盐的吸附性能最佳,最大吸附量达到35.00 mg·g-1. Ce-BC对磷酸盐的吸附过程符合准二级动力学模型,并能在1 h内达到98%的磷酸盐去除率,吸附速率快.此外,Ce-BC具有较高的抗阴离子干扰能力,且具有良好的再生性能,Ce-BC经过4次再生后仍能保持90%以上的初始吸附效率.场发射扫描电镜-能量色散光谱(...
关键词 ：
吸附再生 吸附再生 固定床 固定床 氧化铈 氧化铈 水葫芦生物炭 水葫芦生物炭 磷回收 磷回收
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| GB/T 7714 | 王光泽 , 曾薇 , 李帅帅 . 铈改性水葫芦生物炭对磷酸盐的吸附特性 [J]. | 环境科学 , 2021 , 42 (10) : 4815-4825 . |
| MLA | 王光泽 et al. "铈改性水葫芦生物炭对磷酸盐的吸附特性" . | 环境科学 42 . 10 (2021) : 4815-4825 . |
| APA | 王光泽 , 曾薇 , 李帅帅 . 铈改性水葫芦生物炭对磷酸盐的吸附特性 . | 环境科学 , 2021 , 42 (10) , 4815-4825 . |
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摘要 ：
As a novel phosphorus recovery product, vivianite (Fe-3(PO4)(2)center dot 8H(2)O) has attracted much attention due to its enormous recycling potential and foreseeable economic value. Taking sponge iron as seed material, the effect of different reaction conditions on the recovery of phosphorus in waste activated sludge by vivianite crystallization was studied. Through single factor tests, the optimal conditions for vivianite formation were in the pH range of 5.5-6.0 with Fe/P molar ratio of 1.5. Scanning electron microscopy (SEM), powder X-ray diffraction (XRD), and energy dispersive spectroscopy (EDS) were used to analyze the components of the crystals. The results showed that the vivianite produced by sponge iron as the seed crystal were larger and thicker (300-700 mu m) than other seed (200-300 mu m) and without seed (50-100 mu m). Moreover, vivianite, which was synthesized with sponge iron as seed, was obviously magnetic and could be separated from the sludge by rubidium magnet. The Box-Behnken design of the response surface methodology was used to optimize the phosphorus-recovery process with sponge iron (maximum phosphorus recovery rate was 83.17%), and the interaction effect of parameters was also examined, pH had a significant effect on the formation of vivianite. In summary, this research verifies the feasibility of using sponge iron as the seed crystal to recover phosphorus in the form of vivianite from waste activated sludge, which is conducive to the subsequent separation and utilization of vivianite.
关键词 ：
Anaerobic fermentation Anaerobic fermentation Batch tests Batch tests Box-Behnken design Box-Behnken design Crystal characterization Crystal characterization Phosphate recovery Phosphate recovery Seed crystal Seed crystal
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| GB/T 7714 | Wu, Guoding , Zeng, Wei , Li, Shuaishuai et al. Phosphorus recovery from waste activated sludge by sponge iron seeded crystallization of vivianite and process optimization with response surface methodology [J]. | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH , 2021 , 28 (41) : 58375-58386 . |
| MLA | Wu, Guoding et al. "Phosphorus recovery from waste activated sludge by sponge iron seeded crystallization of vivianite and process optimization with response surface methodology" . | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 28 . 41 (2021) : 58375-58386 . |
| APA | Wu, Guoding , Zeng, Wei , Li, Shuaishuai , Jia, Ziyue , Peng, Yongzhen . Phosphorus recovery from waste activated sludge by sponge iron seeded crystallization of vivianite and process optimization with response surface methodology . | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH , 2021 , 28 (41) , 58375-58386 . |
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摘要 ：
Achieving enhanced biological phosphorus removal dominated by Tetrasphaera utilizing waste activated sludge (WAS) as carbon source could solve the problems of insufficient carbon source and excessive discharge of WAS in biological phosphorus removal. Up to now, the sludge reduction ability of Tetrasphaera remained largely unknown. Furthermore, the difference between traditional sludge fermentation and sludge fermentation dominated by Tetrasphaera was still unclear. In this study, two different sequencing batch reactors (SBRs) were operated. WAS fromSBR-parent was utilized as sole carbon source to enrich Tetrasphaera with the relative abundance of 91.9% in SBR-Tetrasphaera. PO43--P removal and sludge reduction could simultaneously be achieved. The effluent concentration of PO43 --P was 0, and the sludge reduction efficiency reached about 44.14% without pretreatment of sludge. Cell integrity detected by flow cytometry, the increase of DNA concentration in the sludge supernatant and decrease of particle size of activated sludge indicated that cell death and lysis occurred in sludge reduction dominated by Tetrasphaera. Stable structure of activated sludge was also damaged in this process, which led to the sludge reduction. By analyzing the excitation-emission matrix spectra of extracellular polymeric substances and the changes of carbohydrate and protein concentration, this study proved that slowly biodegradable organics (e.g., soluble microbial byproduct, tyrosine and tryptophan aromatic protein) could be better hydrolyzed and acidized to volatile fatty acids (VFAs) in sludge fermentation dominated by Tetrasphaera than traditional sludge fermentation, which provided carbon source for biological nutrients removal and saved operation cost in wastewater treatment. (C) 2021 Elsevier B.V. All rights reserved.
关键词 ：
Biological phosphorus removal Biological phosphorus removal Enriched culture Enriched culture Fermentation Fermentation Polyphosphate accumulating organisms Polyphosphate accumulating organisms
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| GB/T 7714 | Fan, Zhiwei , Zeng, Wei , Meng, Qingan et al. Achieving enhanced biological phosphorus removal utilizing waste activated sludge as sole carbon source and simultaneous sludge reduction in sequencing batch reactor [J]. | SCIENCE OF THE TOTAL ENVIRONMENT , 2021 , 799 . |
| MLA | Fan, Zhiwei et al. "Achieving enhanced biological phosphorus removal utilizing waste activated sludge as sole carbon source and simultaneous sludge reduction in sequencing batch reactor" . | SCIENCE OF THE TOTAL ENVIRONMENT 799 (2021) . |
| APA | Fan, Zhiwei , Zeng, Wei , Meng, Qingan , Liu, Hong , Liu, Hongjun , Peng, Yongzhen . Achieving enhanced biological phosphorus removal utilizing waste activated sludge as sole carbon source and simultaneous sludge reduction in sequencing batch reactor . | SCIENCE OF THE TOTAL ENVIRONMENT , 2021 , 799 . |
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摘要 ：
Preparing adsorbents with hydrated phosphorophilic metal oxide modified porous materials is a promising method for recovering phosphorus from wastewater. In this study, three kinds of adsorbents were developed by loading iron (), zirconium () and lanthanum () on diatomite under the same preparation conditions (referred to as D-HFO, D-HZO, D-HLO, respectively). The property differences and phosphorus adsorption behavior differences of three adsorbents in actual wastewater were explored. Characterization results indicated that three metals were mainly supported on diatomite in the form of hydrated oxides with nanostructures. In batch experiment, the adsorption capacity of D-HFO, D-HZO was high under acidic conditions, while D-HLO tended to adsorb phosphorus in neutral or slightly alkaline environment. The maximum adsorption capacities of D-HFO, D-HZO, D-HLO to adsorb phosphorus from wastewater were 13.22, 20.25, 148.31 mg/g, respectively. Yet in fixed-bed column experiment, D-HLO particles agglomerated due to its high chemical energy, and the maximum treatment bed-volume (BV) of D-HFO, D-HZO, D-HLO were 120, 315, 210 BV, respectively. Langmuir-Langmuir fitting results showed that the chemical precipitation contribution rate of phosphorus adsorbed on D-HFO, D-HZO, D-HLO was 83.5%, 63.8%, 86.2%, respectively. Ligand exchange and surface complexation were the main recovery mechanisms in phosphorus adsorption process from the actual wastewater by three adsorbents. © 2021 Elsevier B.V.
关键词 ：
Adsorption Adsorption Alkalinity Alkalinity Chemicals removal (water treatment) Chemicals removal (water treatment) Hydration Hydration Metal recovery Metal recovery Metals Metals Phosphorus Phosphorus Porous materials Porous materials Precipitation (chemical) Precipitation (chemical) Secondary recovery Secondary recovery
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| GB/T 7714 | Li, Shuaishuai , Zeng, Wei , Ren, Ziyan et al. Performance difference of hydrated phosphorophilic metal oxides in modifying diatomite and recovering phosphorus from wastewater [J]. | Colloids and Surfaces A: Physicochemical and Engineering Aspects , 2021 , 623 . |
| MLA | Li, Shuaishuai et al. "Performance difference of hydrated phosphorophilic metal oxides in modifying diatomite and recovering phosphorus from wastewater" . | Colloids and Surfaces A: Physicochemical and Engineering Aspects 623 (2021) . |
| APA | Li, Shuaishuai , Zeng, Wei , Ren, Ziyan , Jia, Ziyue , Wu, Guoding , Peng, Yongzhen . Performance difference of hydrated phosphorophilic metal oxides in modifying diatomite and recovering phosphorus from wastewater . | Colloids and Surfaces A: Physicochemical and Engineering Aspects , 2021 , 623 . |
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摘要 ：
Sponge iron is a potential material for nitrogen and phosphate removal. To explore the performances and mechanisms of nitrogen and phosphate removal by sponge iron, a sponge iron biofilter was established. The results showed that nitrate was completely removed at HRT of 48 h without external carbon source and at HRT of 3 h with C/N ratio of 5. Furthermore, it was easy to achieve partial denitrification at HRT of 1 h with C/N ratio of 3. The mechanisms of nitrate removal were chemical reduction and nitrate dependent ferrous oxidation without external carbon source and heterotrophic denitrification with external carbon source. XPS result indicated that phosphate was removed by the formation of ferric phosphate precipitation. High throughput sequencing showed that iron-oxidizing bacteria Gallionellaceae was highly enriched in biofilter, accounting for 17.83%, which indicated that it was feasible to achieve autotrophic nitrate removal by sponge iron biofilter.
关键词 ：
Microorganism community Microorganism community Nitrate removal Nitrate removal Phosphate removal Phosphate removal Sponge iron Sponge iron
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| GB/T 7714 | Li, Jianmin , Zeng, Wei , Liu, Hong et al. Performances and mechanisms of simultaneous nitrate and phosphate removal in sponge iron biofilter [J]. | BIORESOURCE TECHNOLOGY , 2021 , 337 . |
| MLA | Li, Jianmin et al. "Performances and mechanisms of simultaneous nitrate and phosphate removal in sponge iron biofilter" . | BIORESOURCE TECHNOLOGY 337 (2021) . |
| APA | Li, Jianmin , Zeng, Wei , Liu, Hong , Wu, Yuexi , Miao, HaoHao . Performances and mechanisms of simultaneous nitrate and phosphate removal in sponge iron biofilter . | BIORESOURCE TECHNOLOGY , 2021 , 337 . |
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摘要 ：
As a promising phosphorus source, phosphorus recovery from sewage sludge ash is necessary to ensure sustainable phosphorus cycle and management. To achieve these targets, a novel strategy including phosphorus capture by acid-resistant adsorbent from acid-extract of sewage sludge ash and repeated enrichment in eluent was first proposed in this study. Over 93% of phosphorus was extracted by H2SO4 acidification at pH of 2.0, and a tailored acid-resistant adsorbent recovered almost all the extracted phosphorus in acid-extract of sewage sludge ash. The fitting results of multiple models showed that the rate-limiting step for phosphorus recovery was chemical reaction, and the maximum recovery capacity of acid-resistant adsorbent was 41.7-44.0 mg/g. Characterization results of X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and Zeta potential suggested that the recovery mechanism of acid-resistant adsorbent for phosphorus included ligand exchange, inner-sphere complexation and electrostatic attraction. After 8 cycles of recovery-repeated enrichment, the phosphorus in eluent was enriched about 6.7 times. Over 99% of phosphorus in eluent was recovered as struvite by adding external magnesium and ammonium at pH of 8.5. The content of heavy metals in recovered struvite were far below the utilization standard of plant fertilizer, indicating that the phosphorus in sewage sludge ash could be recovered in the form of high-quality phosphorus fertilizer.
关键词 ：
Acid-resistant adsorbent Acid-resistant adsorbent Phosphorus recovery Phosphorus recovery Repeated enrichment Repeated enrichment Sewage sludge ash Sewage sludge ash Struvite Struvite
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| GB/T 7714 | Li, Shuaishuai , Zeng, Wei , Ren, Ziyan et al. A novel strategy to capture phosphate as high-quality struvite from the sewage sludge ash: Process, mechanism and application [J]. | JOURNAL OF CLEANER PRODUCTION , 2021 , 322 . |
| MLA | Li, Shuaishuai et al. "A novel strategy to capture phosphate as high-quality struvite from the sewage sludge ash: Process, mechanism and application" . | JOURNAL OF CLEANER PRODUCTION 322 (2021) . |
| APA | Li, Shuaishuai , Zeng, Wei , Ren, Ziyan , Jia, Ziyue , Peng, Xiaojing , Peng, Yongzhen . A novel strategy to capture phosphate as high-quality struvite from the sewage sludge ash: Process, mechanism and application . | JOURNAL OF CLEANER PRODUCTION , 2021 , 322 . |
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摘要 ：
Phosphorus is an indispensable element, while the existing phosphate rock resources are not enough to maintain the long-term demand of modern agricultural development. To ensure the sustainability of economic and social, it is necessary and urgent to seek the alternative phosphorus source of phosphate rock. In this study, calcined clam shell powder (CSP) was firstly used as a modifier and mixed with sewage sludge (SS) for co-pyrolysis to obtain sludge-derived pyrochars containing a large amount of bioavailable phosphorus. The effect of different temperatures (500, 600, 700, 800 degrees C) and dosages (0%, 10%, 20%, 30%) on the change in the form of phosphorus during the pyrolysis process were investigated. With the increase of temperature and the addition of CSP, the orthophosphate (Ortho-P) increased from 63.69% in the original SS to nearly 100%. Furthermore, the main phase of inorganic phosphorus (IP) changed, mainly in the form of apatite phosphorus (hydroxyapatite increased from 8.88% to 35.97%), and the concentration of easy-to-lose phosphorus reduced to 0.11 mg/g. After co-pyrolysis of SS with CSP, the passivation situation of heavy metals (HMs), such as Zn, Mn, Cr, Cu, Cd and Pb was significantly improved, thus reducing the potential environmental risk. The planting experiment proved that the sludge-derived pyrochars obtained by adding 20% CSP at 800 degrees C promoted the germination of seeds and the growth of seedlings. Consequently, the product of SS co-pyrolysis with CSP could be used as an excellently bioavailable and environmentally friendly phosphate fertilizer for agricultural production. (C) 2021 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
关键词 ：
Calcined clam shells Calcined clam shells Co-pyrolysis Co-pyrolysis Heavy metals Heavy metals Phosphorus bioavailability Phosphorus bioavailability Sewage sludge Sewage sludge
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| GB/T 7714 | Ren, Ziyan , Zeng, Wei , Liu, Hongjun et al. Enhanced bioavailability of phosphorus in sewage sludge through pyrolysis aided by calcined clam shell powder [J]. | PROCESS SAFETY AND ENVIRONMENTAL PROTECTION , 2021 , 156 . |
| MLA | Ren, Ziyan et al. "Enhanced bioavailability of phosphorus in sewage sludge through pyrolysis aided by calcined clam shell powder" . | PROCESS SAFETY AND ENVIRONMENTAL PROTECTION 156 (2021) . |
| APA | Ren, Ziyan , Zeng, Wei , Liu, Hongjun , Jia, Yuan , Peng, Xiaojing , Peng, Yongzhen . Enhanced bioavailability of phosphorus in sewage sludge through pyrolysis aided by calcined clam shell powder . | PROCESS SAFETY AND ENVIRONMENTAL PROTECTION , 2021 , 156 . |
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摘要 ：
The dual isotope fractionation of nitrogen (N) and oxygen (O) is an effective way to track the transformation of NO3--N in biological denitrification process. The Sulfur autotrophic denitrification combined with the different concentrations of S2O32- was investigated using the dual isotope fractionation of nitrogen (N) and oxygen (O) to reveal the nitrogen removal mechanism of the activated sludge. Based on successful autotrophic denitrification incubation, the modified Logistic model responded to the short-term effects of S2O32- addition on NO3--N removal and SO42- generation. Under the S2O32- addition of 0.5, 1, 2 and 4 times of the incubation stage (49.29 mg/L-394.32 mg/L), the fractionation effect of N in NO3--N ((15)epsilon(NO3)) decreased from 8.74 +/- 1.81 parts per thousand to 2.08 +/- 0.06 parts per thousand, and the fractionation effect of O in NO3--N ((18)epsilon(NO3)) declined from 11.34 +/- 0.46 parts per thousand to 5.48 +/- 0.46 parts per thousand. The (15)epsilon(NO3)/(18)epsilon(NO3) was maintained at 0.46-0.94, indicating a negative correlation between addition amount and isotope effect, and the addition of high concentrations of S2O32- was not suitable for system stabilization. Moreover, the O-18-labeled H2O (delta O-18(H2O)) tests significantly proved the presence of O exchange between NO2--N/NO3--N and H2O (67%/97%) during the nitrogen removal process, while the reoxidation of NO2--N was explored in the autotrophic denitrification. The kinetic models coupled with isotope fractionation effectively revealed the nitrogen removal characteristics in the autotrophic denitrification systems, and verified the difference between the activated sludge-based wastewater treatment process and the natural ecosystem. (C) 2021 Elsevier B.V. All rights reserved.
关键词 ：
Dual isotopes fractionation Dual isotopes fractionation Reoxidation Reoxidation Short-term effects Short-term effects Sulfur autotrophic denitrification Sulfur autotrophic denitrification The modified Logistic model The modified Logistic model
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| GB/T 7714 | Liu, Hong , Zeng, Wei , Zhan, Mengjia et al. Nitrogen removal performance of sulfur autotrophic denitrification under different S2O32- additions using isotopic fractionation of nitrogen and oxygen [J]. | SCIENCE OF THE TOTAL ENVIRONMENT , 2021 , 794 . |
| MLA | Liu, Hong et al. "Nitrogen removal performance of sulfur autotrophic denitrification under different S2O32- additions using isotopic fractionation of nitrogen and oxygen" . | SCIENCE OF THE TOTAL ENVIRONMENT 794 (2021) . |
| APA | Liu, Hong , Zeng, Wei , Zhan, Mengjia , Fan, Zhiwei , Li, Jianmin , Peng, Yongzhen . Nitrogen removal performance of sulfur autotrophic denitrification under different S2O32- additions using isotopic fractionation of nitrogen and oxygen . | SCIENCE OF THE TOTAL ENVIRONMENT , 2021 , 794 . |
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