Review
Engineering, Environmental
Peng Wu, Junjiang Chen, Vijay Kumar Garlapati, Xingxing Zhang, Francis Wani Victor Jenario, Xiang Li, Wenru Liu, Chongjun Chen, Tejraj M. Aminabhavi, Xiaonong Zhang
Summary: This study presents a comprehensive review of the anammox process, the advancements in nitritation and denitratation processes, and proposes a novel wastewater treatment method for efficient nitrogen removal.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Yuanyuan Miao, Liang Zhang, Deshuang Yu, Jianhua Zhang, Wenke Zhang, Guocheng Ma, Xinchao Zhao, Yongzhen Peng
Summary: Intermittent aeration is an effective strategy for biological wastewater treatment, allowing for advanced nitrogen removal and reduced energy consumption. It is suitable for partial nitrification and denitrification processes.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Engineering, Environmental
Deepti Negi, Shelly Verma, Swati Singh, Achlesh Daverey, Jih-Gaw Lin
Summary: Constructed wetland is a sustainable eco-technology for remediation of contaminants, but its nitrogen removal efficiency is unsatisfactory. Anammox, an eco-friendly technology, can be integrated into constructed wetlands to overcome the shortcomings.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Qianxia Li, Cuina Bu, Hafz Adeel Ahmad, Christophe Guimbaud, Baoyu Gao, Zhuangming Qiao, Shaowu Ding, Shou-Qing Ni
Summary: The study found that the abundance of DNRA bacteria in multistage constructed wetlands is negatively correlated with environmental factors and positively correlated with the efficiency of nitrate removal.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Manping Zhang, Jung-Chen Huang, Shanshan Sun, Muhammad Muneeb Ur Rehman, Shengbing He, Weili Zhou
Summary: Constructed wetlands are effective in removing nitrogen from water, with potential activities of DNRA, anammox, denitrification, and nitrification contributing to nitrogen removal. Planted mesocosms showed better performance in nitrogen removal compared to unplanted mesocosms, with higher values of potential activities of nitrogen-cycling pathways observed in the planted mesocosms.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Yeqi Du, Deshuang Yu, Xiaoxia Wang, Jianyuan Zhen, Chunxue Bi, Xiuzhen Gong, Ji Zhao
Summary: In this study, simultaneous nitritation, anammox and denitrification (SNAD) was quickly established in an integrated fixed-biofilm activated sludge (IFAS) reactor to treat high-ammonia municipal wastewater. The results showed high removal efficiencies of total nitrogen and chemical oxygen demand, and high-throughput sequencing analysis revealed the presence of anammox bacteria and ammonia oxidizing bacteria in the system.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
A. Pascual, J. A. Alvarez, D. de la Varga, C. A. Arias, D. Van Oirschot, R. Kilian, M. Soto
Summary: The influence of bed depth on the performance of aerated horizontal constructed wetlands was investigated at the pilot plant scale. The results showed that a larger bed depth and artificial aeration can improve the loading rate and the removal efficiency of organic matter and nitrogen in the horizontal constructed wetlands.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Shuiping Cheng, Jing Huai, Fei Zhong, Juan Wu, Shaole Yu
Summary: The study found that adding algae to constructed wetlands can strengthen the anoxic environment, increase volatile fatty acid concentrations, and improve the ratios of various nitrite reductase and nitrate reductase genes, thus expanding the active space for denitrification. Therefore, algae addition could potentially enhance denitrification in wastewater treatment with low COD/N ratios.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Danielle J. Allen, Mark Farrell, Jianyin Huang, Simon Plush, Luke M. Mosley
Summary: High organic loadings can lead to water quality problems in constructed wetlands, but artificial aeration can help mitigate these issues. This study compared the effects of baseline, continuous, and intermittent aeration on water quality in a free water surface constructed wetland. The results showed that aeration increased dissolved oxygen levels, but had no significant effect on other parameters such as nutrient concentrations.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Agricultural Engineering
Shenhua Yang, Yongzhen Peng, Shujun Zhang, Xiaoyu Han, Jialin Li, Liang Zhang
Summary: This study analyzed and compared the biofilm structure, performance, and nitrogen removal pathways of microporous and macroporous carriers from a full-scale partial nitritation/anammox reactor. Microporous carriers had thicker biofilms, higher biomass, and nitrogen removal efficiency due to the integration of denitrifying and anammox bacteria, while macroporous carriers had thinner biofilms, lower microbial richness, but strong network correlation among genera.
BIORESOURCE TECHNOLOGY
(2021)
Review
Agricultural Engineering
Yujie Chen, Guangze Guo, Yu -You Li
Summary: This review introduces the application of anaerobic ammonia oxidation (anammox) process in nitrogen removal and summarizes methods to improve nitrogen removal rate. Recently developed integrated systems aim to enhance nitrogen removal rate and efficiency, providing new insights for achieving efficient nitrogen removal.
BIORESOURCE TECHNOLOGY
(2022)
Article
Environmental Sciences
Zhouying Xu, Chen Wu, Yihui Ban, Shiyang Zhang
Summary: In this study, a hybrid constructed wetland system was used to treat synthetic domestic wastewater, with the optimal shunt rate identified as 40%. Denitrifying bacteria were found to be the dominant microorganisms, with nitrification and denitrification being the main nitrogen removal pathways, and anammox was also discovered in the HFCW.
WATER AIR AND SOIL POLLUTION
(2021)
Article
Engineering, Environmental
Naveen Chand, Kapil Kumar, Surindra Suthar
Summary: The study demonstrated that intermittent aeration in VFCWs significantly improved the removal efficiency of COD, NH4+-N, NO3-N, and TP compared to non-aerated setups, while setups with biochar (BC) addition and plantation were more advantageous in nutrient removal than those without BC. Moreover, the COD/N ratio of wastewater did not have a significant impact on VFCWs with BC and intermittent aeration, indicating the effectiveness of slow adsorption and fast aerobic degradation processes.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Environmental Sciences
Wen Jia, Yicheng Yang, Liuyan Yang, Yan Gao
Summary: This study successfully improved the nitrogen removal efficiency in wastewater using a horizontal subsurface-flow constructed wetland (FeB-HSCW) by combining plant fermentation liquid and Fe-modified biochar. With the addition of a large amount of plant fermentation liquid, the abundance of denitrification and anammox bacterial genes in FeB-HSCW significantly increased, while the abundance of nitrifying bacterial genes decreased.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Liya Li, Jingwei Feng, Liu Zhang, Hao Yin, Chunli Fan, Zechun Wang, Menglei Zhao, Chengchang Ge, Hao Song
Summary: The study revealed significant differences in nitrogen and phosphorus removal efficiency of subsurface flow constructed wetlands (SFCWs) filled with different substrates. Intermittent aeration improved nitrogen and phosphorus removal efficiencies of SFCWs, with the front section being the main pollutant removal area. Precipitation and adsorption on substrates were identified as the main mechanisms for phosphorus removal.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Lijun Wang, Wenjuan Zhang, Wendong Tao, Li Wang, Xingmin Shi, Xinwei Lu
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2017)
Article
Environmental Sciences
Lijun Wang, Li Wang, Wendong Tao, Richard C. Smardon, Xingmin Shi, Xinwei Lu
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2016)
Review
Environmental Sciences
Wendong Tao, Kazi P. Fattah, Matthew P. Huchzermeier
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2016)
Review
Biotechnology & Applied Microbiology
Wendong Tao, Keshav Sauba, Kazi P. Fattah, John R. Smith
REVIEWS IN ENVIRONMENTAL SCIENCE AND BIO-TECHNOLOGY
(2017)
Article
Geosciences, Multidisciplinary
Lijun Wang, Wendong Tao, Richard C. Smardon, Xue Xu, Xinwei Lu
FRONTIERS OF EARTH SCIENCE
(2018)
Review
Biotechnology & Applied Microbiology
Wendong Tao, Keshav Sauba, Kazi P. Fattah, John R. Smith
REVIEWS IN ENVIRONMENTAL SCIENCE AND BIO-TECHNOLOGY
(2017)
Article
Environmental Sciences
Lijun Wang, Mengmei Liu, Wendong Tao, Wenjuan Zhang, Li Wang, Xingmin Shi, Xinwei Lu, Xiaoping Li
Article
Environmental Sciences
Jonathan Masih-Das, Wendong Tao
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2018)
Article
Environmental Sciences
Wendong Tao
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2018)
Article
Environmental Sciences
Wendong Tao, Alper Bayrakdar, Yanru Wang, Fred Agyeman
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2019)
Article
Environmental Sciences
Bianbian Ma, Lijun Wang, Wendong Tao, Mengmei Liu, Panqing Zhang, Shengwei Zhang, Xiaoping Li, Xinwei Lu
Article
Biodiversity Conservation
Kang Hou, Wendong Tao, Liming Wang, Xuxiang Li
ECOLOGICAL INDICATORS
(2020)
Article
Energy & Fuels
Swati Dahiya, Raja Chowdhury, Wendong Tao, Pradeep Kumar
Summary: Hydrolysate from water hyacinth biomass contains high amounts of carbohydrates and nutrients, which was used as a medium for cultivating Chlorella sorokiniana. Different light intensities and carbon sources affected the microalgal growth and lipid, carbohydrate accumulation.
Article
Green & Sustainable Science & Technology
Swati Rani, Raja Chowdhury, Wendong Tao, Linda Nedbalova
Summary: The study found that the microalgal reactor had the best nutrient (N and P) removal efficiency in treating wastewater, while the addition of sludge improved chemical oxygen demand (COD) removal. Nitrifiers were predominant in the microalga + sludge reactor, and an increase in light regime enhanced biomass productivity in the algal reactor.
Article
Engineering, Environmental
Hanyan Li, Wendong Tao
CHEMICAL ENGINEERING JOURNAL
(2017)
Article
Ecology
Alexander M. Cancelli, Frank A. P. C. Gobas
Summary: A mechanistic model was developed to assess the removal efficiency of pollutants in a wetland system, particularly in oil sands process-affected water (OSPW). The model simulated wetland mechanisms of chemical removal and showed that sustained wetland treatment is feasible. It is a helpful tool to evaluate the feasibility of treatment systems and to assess trade-offs in wetland design and operation.
ECOLOGICAL ENGINEERING
(2024)
Article
Ecology
Prakash Singh Thapa, Hiromu Daimaru, Seiji Yanai
Summary: This study assessed the vegetation recovery and erosion condition in a landslide area in central Japan. The results show that the upper slope, where reforestation activities were implemented, has seen significant vegetation recovery and no significant erosion, while the lower slope lacks vegetation and has experienced continued erosion.
ECOLOGICAL ENGINEERING
(2024)
Article
Ecology
Mike Jerauld, Forrest Dierberg, Thomas DeBusk, Scott Jackson, Kevin Grace, John Juston
Summary: The Everglades Stormwater Treatment Areas (STAs) are constructed wetlands built to remove phosphorus (P) from agricultural and urban runoff in support of Everglades restoration. Research shows that the levels of calcium (Ca) and alkalinity (Alk) have an impact on phosphorus removal in these wetlands.
ECOLOGICAL ENGINEERING
(2024)
Article
Ecology
Kalindhi Larios, Stefan Gerber, Rafael Munoz-Carpena, Patrick Inglett, K. Ramesh Reddy, Michael Chimney
Summary: This study modeled the phosphorus biogeochemical dynamics in one of the best performing Everglades treatment wetlands and found that the complexity of the hydrological system significantly affected the simulated water column P concentration. The modeling tool developed in this study can guide future data collection and optimization efforts for treatment wetlands in the Everglades.
ECOLOGICAL ENGINEERING
(2024)
Article
Ecology
Jing Hu, Benjamin Baiser, R. Thomas James, K. Ramesh Reddy
Summary: This study examined the long-term phosphorus retention in Stormwater Treatment Areas (STAs) and identified the factors influencing their performance. The results showed that the operational performance of STAs improved over time. There were notable differences among individual STAs, with the co-precipitation of phosphorus with calcium playing a critical role in one of the STAs. This highlights the complexity of phosphorus removal in STAs and the need for site-specific management strategies.
ECOLOGICAL ENGINEERING
(2024)
Article
Ecology
Odi Villapando, K. R. Reddy, J. King
Summary: The biogeochemical response to different flow conditions within two parallel flow-ways in Everglades Stormwater Treatment Area (STA)-2 was studied. It was found that there was a gradual decrease in the total phosphorus (TP) concentration from inflow to outflow for both emergent aquatic vegetation (EAV) and submerged aquatic vegetation (SAV) dominated systems, with EAV showing a higher reduction rate. Significant increase in TP concentration was observed in the SAV system under no flow condition, possibly due to the production of particulate phosphorus (PP) through various mechanisms.
ECOLOGICAL ENGINEERING
(2024)