检索范围:
排序: 展示方式:
Advanced nitrogen and phosphorus removal in A
Jianhua WANG, Yongzhen PENG, Yongzhi CHEN
《环境科学与工程前沿(英文)》 2011年 第5卷 第3期 页码 474-480 doi: 10.1007/s11783-011-0360-0
关键词: Anoxic zone and biologic aerated filter (A2O-BAF) system domestic wastewater with low carbon-to-nitrogen ratio advanced nitrogen and phosphorus removal denitrifying phosphorus removal
Hongjing LI, Yinguang CHEN
《环境科学与工程前沿(英文)》 2011年 第5卷 第2期 页码 283-290 doi: 10.1007/s11783-010-0243-9
关键词: low dissolved oxygen (DO) biological nitrogen and phosphorus removal polyhydroxyalkanoates (PHA) glycogen
Modelling the thresholds of nitrogen/phosphorus concentration and hydraulic retention time for bloom
《环境科学与工程前沿(英文)》 2022年 第16卷 第10期 doi: 10.1007/s11783-022-1564-1
● A new model for bloom control in open land scape water was constructed.
关键词: Reclaimed water landscape Algal bloom Nitrogen and phosphorus Hydraulic retention time Threshold Control model
《环境科学与工程前沿(英文)》 2022年 第16卷 第3期 doi: 10.1007/s11783-021-1463-x
• Lanthanum modified bentonite (LMB) can effectively absorb phosphorus (P).
关键词: Sediment Eutrophication Thin-layer capping Phosphorus Nitrogen Aluminum-based P-inactivation agent
INTENSIFICATION OF GRASSLAND-BASED DAIRY PRODUCTION AND ITS IMPACTS ON LAND, NITROGEN AND PHOSPHORUS
Jouke OENEMA, Oene OENEMA
《农业科学与工程前沿(英文)》 2021年 第8卷 第1期 页码 130-147 doi: 10.15302/J-FASE-2020376
关键词: ammonia externalization feed forage maize front runners manure production milk yield nitrogen surplus
《环境科学与工程前沿(英文)》 2022年 第16卷 第2期 doi: 10.1007/s11783-021-1453-z
• ZnO-NP disrupted metabolic/catabolic balance of bacteria by affecting DHA activity.
关键词: Granular sludge Biotoxicity Reactive oxygen species Extracellular polymeric substances
INTENSIFICATION OF GRASSLAND-BASED DAIRY PRODUCTION AND ITS IMPACTS ON LAND, NITROGEN AND PHOSPHORUS
《农业科学与工程前沿(英文)》 2021年 第8卷 第1期
• Monitoring data of>5000 dairy farms collected and examined in uniform manner.
• Environmental performances of farms influenced by government regulations.
• N and P surpluses at farm level remained about constant with intensity level.
• N and P use efficiencies at farm, herd and soil increased with intensity level.
• Accounting for externalization of off-farm feed production affects NUE and PUE.
• Ammonia emissions per kg milk decreased with the level of intensification.
Many grassland-based dairy farms are intensifying production, i.e., produce more milk per ha of land in response to the increasing demand for milk (by about 2% per year) in a globalized market. However, intensive dairy farming has been implicated for its resources use, ammonia and greenhouse gas emissions, and eutrophication impacts. This paper addresses the question of how the intensity of dairy production relates to N and P surpluses and use efficiencies on farms subjected to agri-environmental regulations. Detailed monitoring data were analyzed from 2858 grassland-based dairy farms in The Netherlands for the year 2015. The farms produced on average 925 Mg·yr−1 milk. Milk production per ha ranged from<10 to>30 Mg·ha−1·yr−1. Purchased feed and manure export strongly increased with the level of intensification. Surpluses of N and P at farm level remained constant and ammonia emissions per kg milk decreased with the level of intensification. In conclusion, N and P surpluses did not differ much among dairy farms greatly differing in intensity due to legal N and P application limits and obligatory export of manure surpluses to other farms. Further, N and P use efficiencies also did not differ among dairy farms differing in intensity provided the externalization of feed production was accounted for. This paper provides lessons for proper monitoring and control of N and P cycling in dairy farming.
Zhe LI , Jinsong GUO , Man LONG , Fang FANG , Jinping SHENG , Hong ZHOU ,
《环境科学与工程前沿(英文)》 2009年 第3卷 第3期 页码 334-340 doi: 10.1007/s11783-009-0039-y
关键词: Three Gorges Reservoir eutrophication nitrogen phosphorus seasonal variation chlorophyll
Removing nitrogen and phosphorus from simulated wastewater using algal biofilm technique
WEI Qun, HU Zhiquan, LI Genbao, XIAO Bo, SUN Hao, TAO Meiping
《环境科学与工程前沿(英文)》 2008年 第2卷 第4期 页码 446-451 doi: 10.1007/s11783-008-0064-2
LI Jun, NI Yongjiong, WEI Su, CHENG Guobiao, OU Changjin, PENG Yongzhen, GU Guowei, LU Jingen
《环境科学与工程前沿(英文)》 2008年 第2卷 第1期 页码 99-102 doi: 10.1007/s11783-008-0017-9
AGRICULTURAL GREEN DEVELOPMENT IN THE ERHAI LAKE BASIN—THE WAY FORWARD
《农业科学与工程前沿(英文)》 2023年 第10卷 第4期 页码 510-517 doi: 10.15302/J-FASE-2023524
Pollution of high-altitude lake basins by agriculture and rural activities, and the control of this pollution, have received increasing attention from academic research and government policy in China. Series of restrictions and regulations have been implemented to protect the surface water quality. These restrictions and regulations have greatly impacted and transformed the agricultural systems and rural livelihoods surrounding these lake basins. Using Erhai Lake basin in Yunnan Province as a case study, three main challenges were identified for concurrently decreasing pollution in the lake and increasing farmer income. It is contended that scientifically-sound environmental protection policies and agricultural green development practices are key to reversing the current situation. This will help to protect the lake from pollution while smallholder farmers will be able to produce healthy food in an environmentally sustainable manner, and with a fair remuneration for all the services farmers provide to the society.
关键词: agriculture farmer income nitrogen phosphorus water pollution
A Novel Electrochemical Reactor for Nitrogen and Phosphorus Recovery from Domestic Wastewater
Shiting Ren, Mengchen Li, Jianyu Sun, Yanhong Bian, Kuichang Zuo, Xiaoyuan Zhang, Peng Liang, Xia Huang
《环境科学与工程前沿(英文)》 2017年 第11卷 第4期 doi: 10.1007/s11783-017-0983-x
关键词: Nutrients recovery Electrochemical reactor Electrolyte cyclic flowing Concentration ratio Struvite
Wei Xiong, Susu Zhou, Zeyong Zhao, Fang Hao, Zhihui Cai, Pingle Liu, Hailiang Zhang, Hean Luo
《化学科学与工程前沿(英文)》 2021年 第15卷 第4期 页码 998-1007 doi: 10.1007/s11705-020-1994-x
关键词: nitrogen and phosphorus doping non-noble nickel catalyst aromatic compounds hydrogenation
A low-density polyethylene composite with phosphorus-nitrogen based flame retardant and multi-walled
Yong Luo, Yuhui Xie, Renjie Chen, Ruizhi Zheng, Hua Wu, Xinxin Sheng, Delong Xie, Yi Mei
《化学科学与工程前沿(英文)》 2021年 第15卷 第5期 页码 1332-1345 doi: 10.1007/s11705-021-2035-0
关键词: MWCNTs PEPA electrical conductivity flame retardant low density polyethylene
《农业科学与工程前沿(英文)》 2023年 第10卷 第4期 页码 607-626 doi: 10.15302/J-FASE-2023517
As the common features of agroecosystems, ditches and ponds benefit the irrigation and drainage, as well as intercepting non-point source pollutants. However, most ditch-pond studies have been conducted in lowland areas. To test this source-sink assumption in upland areas, this study made observations on the ecological function of the ditch and pond system in a typical catchment in China. First, the changes in ponds in the catchment were analyzed using high-resolution remote sensing data. Then, the migration of agricultural pollutants in ditches and ponds were analyzed by field sampling and laboratory detection. The results showed that over the past 15 years the length of ditches in the catchment and the number of small ponds (< 500 m2) have increased by 32% and 75%, respectively. The rate of change in nutrient concentrations in the ditches and ponds were mostly from −20% to 20%, indicating ditches and ponds can be both sources and sinks for agricultural pollutants. Lastly, the contributing factors were explored and it was found that ditches and ponds are important sinks in dry season. However, during the rainy season, ditches and ponds become sources of pollutants, with the rapid drainage of ditches and the overflow of ponds in upland areas. The results of this study revealed that the ditches and ponds could be used for ecological engineering in upland catchments to balance drainage and intercept pollutants.
关键词: ditches ponds non-point source pollution mountainous areas nitrogen phosphorus
标题 作者 时间 类型 操作
Research on polyhydroxyalkanoates and glycogen transformations: Key aspects to biologic nitrogen andphosphorus removal in low dissolved oxygen systems
Hongjing LI, Yinguang CHEN
期刊论文
Modelling the thresholds of nitrogen/phosphorus concentration and hydraulic retention time for bloom
期刊论文
Four kinds of capping materials for controlling phosphorus and nitrogen release from contaminated sediment
期刊论文
INTENSIFICATION OF GRASSLAND-BASED DAIRY PRODUCTION AND ITS IMPACTS ON LAND, NITROGEN AND PHOSPHORUS
Jouke OENEMA, Oene OENEMA
期刊论文
Biotoxicity evaluation of zinc oxide nanoparticles on bacterial performance of activated sludge at COD, nitrogen, and phosphorus reduction
期刊论文
INTENSIFICATION OF GRASSLAND-BASED DAIRY PRODUCTION AND ITS IMPACTS ON LAND, NITROGEN AND PHOSPHORUS
期刊论文
Seasonal variation of nitrogen and phosphorus in Xiaojiang River—A tributary of the Three Gorges Reservoir
Zhe LI , Jinsong GUO , Man LONG , Fang FANG , Jinping SHENG , Hong ZHOU ,
期刊论文
Removing nitrogen and phosphorus from simulated wastewater using algal biofilm technique
WEI Qun, HU Zhiquan, LI Genbao, XIAO Bo, SUN Hao, TAO Meiping
期刊论文
On-line controlling system for nitrogen and phosphorus removal of municipal wastewater in a sequencing
LI Jun, NI Yongjiong, WEI Su, CHENG Guobiao, OU Changjin, PENG Yongzhen, GU Guowei, LU Jingen
期刊论文
A Novel Electrochemical Reactor for Nitrogen and Phosphorus Recovery from Domestic Wastewater
Shiting Ren, Mengchen Li, Jianyu Sun, Yanhong Bian, Kuichang Zuo, Xiaoyuan Zhang, Peng Liang, Xia Huang
期刊论文
Highly uniform Ni particles with phosphorus and adjacent defects catalyze 1,5-dinitronaphthalene hydrogenation
Wei Xiong, Susu Zhou, Zeyong Zhao, Fang Hao, Zhihui Cai, Pingle Liu, Hailiang Zhang, Hean Luo
期刊论文
A low-density polyethylene composite with phosphorus-nitrogen based flame retardant and multi-walled
Yong Luo, Yuhui Xie, Renjie Chen, Ruizhi Zheng, Hua Wu, Xinxin Sheng, Delong Xie, Yi Mei
期刊论文