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DITCHES AND PONDS CAN BE THE SOURCES OR SINKS OF NON-POINT SOURCE POLLUTION: OBSERVATIONS IN AN UPLAND

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 607-626 doi: 10.15302/J-FASE-2023517

Abstract: features of agroecosystems, ditches and ponds benefit the irrigation and drainage, as well as intercepting non-point

Keywords: ditches     ponds     non-point source pollution     mountainous areas     nitrogen     phosphorus    

Removal of non-point pollutants from bridge runoff by a hydrocyclone using natural water head

Jianghua YU, Yeonseok KIM, Youngchul KIM

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 6,   Pages 886-895 doi: 10.1007/s11783-012-0449-0

Abstract: A hydrocyclone using natural water head provided by bridge was operated for the treatment of stormwater runoff. The hydrocyclone was automatically controlled using electronic valve which is connected to a pressure meter. Normally the hydrocyclone was open during dry days, but it was closed after the capture of the first flush. The results indicated that the average pressure and the flow rate were directly affected by the rainfall intensity. The pressure head was more than 2 m when the rainfall intensity was above 5 mm·h . The percentage volume of underflow with high solids concentration decreased as the pressure and flow rate increased, but the percentage volume of overflow with almost no solids showed the opposite behavior. The total suspended solids (TSS) concentration ratio between the overflow and inflow (TSS /TSS ) decreased as a function of the operational pressure, while the corresponding ratio of underflow to inflow (TSS /TSS ) increased. The TSS separation efficiency was evaluated based on a mass balance. It ranged from 25% to 99% with the pressure head ranging from 1.4 to 9.7 m, and it was proportional to pressure and flow rate. Normally, the efficiency was more than 50% when the pressure was higher than 2 m. The analysis of the water budget indicated that around 13% of the total runoff was captured by the hydrocyclone as a first flush, and this runoff was separated as underflow and overflow with the respective percentage volumes of 29% and 71%. The pollutants budget was also examined based on a mass balance. The results showed that the percentage of TSS, chemical oxygen demand (COD), total nitrogen (TN), and total phosphorus (TP) in underflow were 73%, 59%, 7.6%, and 49%, respectively. Thus, it can be concluded that the hydrocyclone worked well. It separated the first flush as solids-concentrated underflow and solids-absent overflow, and effectively reduced the runoff volume needing further treatment. Finally, four types of optional post treatment design are presented and compared.

Keywords: first flush     hydrocyclone     non-point pollution     removal efficiency     stormwater runoff    

FULL TIME-SPACE GOVERNANCE STRATEGY AND TECHNOLOGY FOR CROPLAND NON-POINT POLLUTION CONTROL IN CHINA

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 593-606 doi: 10.15302/J-FASE-2023522

Abstract:

Ensuring food safety while reducing agricultural non-point source pollution is quite challenging,Effective systematic strategies and comprehensive technologies need to be developed for agricultural non-pointthe scale of an administrative village and proved to be a feasible solution for reducing agricultural non-pointgovernance standards and supportive policies need to be set to enhance the efficacy of agricultural non-point

Keywords: 4R chain technology system     agricultural non-point source pollution     case study     full time-space governance    

STRENGTHENING NON-POINT SOURCE POLLUTION CONTROL TO PROMOTE AGRICULTURAL GREEN DEVELOPMENT

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 503-509 doi: 10.15302/J-FASE-2023528

Abstract:

STRENGTHENING NON-POINT SOURCE POLLUTION CONTROL TO PROMOTE AGRICULTURAL GREEN DEVELOPMENT

Keywords: GREEN     AGRICULTURAL     PROMOTE     POLLUTION     SOURCE     DEVELOPMENT     POINT     STRENGTHENING     CONTROL    

Loss coefficient of nitrogenous non-point source pollution under various precipitation conditions

CHENG Hongguang, HAO Fanghua, REN Xiyan, YANG Shengtian, XIONG Wen, LEI Shaoping

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 2,   Pages 230-235 doi: 10.1007/s11783-008-0043-7

Abstract: In this study, calibrations of non-point source (NPS) pollution models are performed based on Black River

Keywords: information     concept     non-point     historical real-time     sedimentation    

Modeling agricultural non-point source pollution in a high-precipitation coastal area of China

Zhiyi LI,Pengfei DU,Haiwei HUANG,Yong Ge,Xu LI

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 6,   Pages 922-928 doi: 10.1007/s11783-014-0720-7

Abstract: Non-point source (NPS) pollution simulation in the high-precipitation coastal areas of China is difficultAn IMPULSE (Integrated Model of Non-point Sources Pollution Processes) based NPS model of the Changtanwhich is a typical high-precipitation coastal area in China, was established based on the analysis of point

Keywords: Changtan Reservoir watershed     non-point source pollution modeling     pre-rainfall soil moisture     model calibration    

Role of rural solid waste management in non-point source pollution control of Dianchi Lake catchments

LU Wenjing, WANG Hongtao

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 1,   Pages 15-23 doi: 10.1007/s11783-008-0006-z

Abstract: In recent years, with control of the main municipal and industrial point pollution sources and implementationof cleaning for some inner pollution sources in the water body, the discharge of point source pollutiondecreased gradually, while non-point source pollution has become increasingly distressing in DianchiAs one of the major targets in non-point source pollution control, an integrated solid waste controlling

REDUCTION OF NON-POINT SOURCE POLLUTION IN THE YONG’AN RIVER BY CONSTRUCTED WETLAND BASED ON 9 YEARS

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 627-638 doi: 10.15302/J-FASE-2023516

Abstract: The agricultural and livestock activities surrounding the rivers flowing into the lakes have caused non-point

Keywords: inflowing rivers     surface-flow constructed wetland     nutrients     long-term monitoring    

Control division of agricultural non-point source pollution at medium-sized watershed scale in Southeast

HUANG Jinliang, HONG Huasheng, ZHANG Luoping

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 3,   Pages 333-339 doi: 10.1007/s11783-008-0035-7

Abstract: This paper presents the study carried out for controlling agricultural non-point source pollution (NSP

INTERACTIVE KNOWLEDGE LEARNING BY ARTIFICIAL INTELLIGENCE FOR SMALLHOLDERS

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 648-653 doi: 10.15302/J-FASE-2023505

Abstract: contribution to prevention of the overuse of nitrogen and phosphorus fertilizers, and mitigating agricultural non-point

Keywords: artificial intelligence     extension system     non-point source pollution control     smallholders     fertilization    

Statistics and countermeasures of non point source pollution in plain river network of Taihu Basin

Qin Zhong,Geng Qingwei,Zang Guimin

Strategic Study of CAE 2010, Volume 12, Issue 6,   Pages 113-116

Abstract: sources in total kept reducing year by year, and the non-point sources increased significantly, especiallytotal phosphorus (TP) whose amount of pollution from non-point sources have already exceeded that fromThe total amount of pollution from non-point sources was almost equal, but its composition changed.Based on the analysis of causes of non-point sources pollution, this essay gives some suggestion on thecontrol of non-point sources pollution in plain river network of Taihu Basin.

Keywords: Taihu Basin     plain river network     non-point sources pollution     contro    

ENHANCING RAINFALL-RUNOFF POLLUTION MODELING BY INCORPORATION OF NEGLECTED PHYSICAL PROCESSES

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 4,   Pages 553-565 doi: 10.15302/J-FASE-2023519

Abstract: The enhanced model can provide deeper insights into non-point pollution mitigation.

Keywords: Erhai Lake     field experiment     non-point source     pollution load     rainfall runoff     wash-off model    

Ecosystem health assessment of urban rivers and lakes

ZHANG Fengling, LIU Jingling, YANG Zhifeng, LI Yongli

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 2,   Pages 209-217 doi: 10.1007/s11783-008-0007-y

Abstract: suggestions on scientific management and ecological restoration of the six lakes were proposed: $`To control non-point

Keywords: unhealthy     management     ecological restoration     Zhonghai     non-point pollution    

Review of Current Situation of Agricultural Non-Point Source Pollution and Its Prevention and Control

Shuxia Wu, Hongbin Liu, Shen Liu, Yaosheng Wang, Baojing Gu, Shuqin Jin, Qiuliang Lei, Limei Zhai, Hongyuan Wang

Strategic Study of CAE 2018, Volume 20, Issue 5,   Pages 23-30 doi: 10.15302/J-SSCAE-2018.05.004

Abstract:

Agricultural non-point source pollution is one of the main factors causingMaking clear of the current situation of non-point agricultural pollution and its prevention and controltechnologies is the premise of non-point pollution control.This paper summarizes the causes and present situation of agricultural non-point source pollution, andThe current mature non-point source pollution prevention and control techniques in planting and livestock

Keywords: agricultural non-point source pollution     farmland nutrient runoff     pollutant discharge from livestock    

SOIL NITROGEN CYCLING AND ENVIRONMENTAL IMPACTS IN THE SUBTROPICAL HILLY REGION OF CHINA: EVIDENCE FROM MEASUREMENTS AND MODELING

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3,   Pages 407-424 doi: 10.15302/J-FASE-2022448

Abstract:

● Soil nitrogen fluxes and influencing factors were reviewed in the subtropical hilly regions.

Keywords: nitrogen cycling     soil nitrogen     nitrogen deposition     greenhouse gases emission     non-point source pollution    

Title Author Date Type Operation

DITCHES AND PONDS CAN BE THE SOURCES OR SINKS OF NON-POINT SOURCE POLLUTION: OBSERVATIONS IN AN UPLAND

Journal Article

Removal of non-point pollutants from bridge runoff by a hydrocyclone using natural water head

Jianghua YU, Yeonseok KIM, Youngchul KIM

Journal Article

FULL TIME-SPACE GOVERNANCE STRATEGY AND TECHNOLOGY FOR CROPLAND NON-POINT POLLUTION CONTROL IN CHINA

Journal Article

STRENGTHENING NON-POINT SOURCE POLLUTION CONTROL TO PROMOTE AGRICULTURAL GREEN DEVELOPMENT

Journal Article

Loss coefficient of nitrogenous non-point source pollution under various precipitation conditions

CHENG Hongguang, HAO Fanghua, REN Xiyan, YANG Shengtian, XIONG Wen, LEI Shaoping

Journal Article

Modeling agricultural non-point source pollution in a high-precipitation coastal area of China

Zhiyi LI,Pengfei DU,Haiwei HUANG,Yong Ge,Xu LI

Journal Article

Role of rural solid waste management in non-point source pollution control of Dianchi Lake catchments

LU Wenjing, WANG Hongtao

Journal Article

REDUCTION OF NON-POINT SOURCE POLLUTION IN THE YONG’AN RIVER BY CONSTRUCTED WETLAND BASED ON 9 YEARS

Journal Article

Control division of agricultural non-point source pollution at medium-sized watershed scale in Southeast

HUANG Jinliang, HONG Huasheng, ZHANG Luoping

Journal Article

INTERACTIVE KNOWLEDGE LEARNING BY ARTIFICIAL INTELLIGENCE FOR SMALLHOLDERS

Journal Article

Statistics and countermeasures of non point source pollution in plain river network of Taihu Basin

Qin Zhong,Geng Qingwei,Zang Guimin

Journal Article

ENHANCING RAINFALL-RUNOFF POLLUTION MODELING BY INCORPORATION OF NEGLECTED PHYSICAL PROCESSES

Journal Article

Ecosystem health assessment of urban rivers and lakes

ZHANG Fengling, LIU Jingling, YANG Zhifeng, LI Yongli

Journal Article

Review of Current Situation of Agricultural Non-Point Source Pollution and Its Prevention and Control

Shuxia Wu, Hongbin Liu, Shen Liu, Yaosheng Wang, Baojing Gu, Shuqin Jin, Qiuliang Lei, Limei Zhai, Hongyuan Wang

Journal Article

SOIL NITROGEN CYCLING AND ENVIRONMENTAL IMPACTS IN THE SUBTROPICAL HILLY REGION OF CHINA: EVIDENCE FROM MEASUREMENTS AND MODELING

Journal Article