scholarly journals Simulation of non-point source pollution of nitrogen and phosphorus in Lake Nansi watershed using SWAT model

2013 ◽  
Vol 25 (2) ◽  
pp. 236-242 ◽  
Author(s):  
LI Shuang ◽  
◽  
ZHANG Zulu ◽  
SUN Yuanyuan
Keyword(s):  
Point Source ◽  
Swat Model ◽  
Point Source Pollution ◽  
Nitrogen And Phosphorus ◽  
Non Point Source Pollution

scholarly journals Simulation of agricultural non-point source pollution in Xichuan by using SWAT model

2018 ◽  
Vol 113 ◽  
pp. 012167 ◽  
Author(s):  
Linan Xing ◽  
Jiane Zuo ◽  
Fenglin Liu ◽  
Xiaohui Zhang ◽  
Qiguang Cao
Keyword(s):  
Point Source ◽  
Swat Model ◽  
Point Source Pollution ◽  
Non Point Source Pollution

scholarly journals Comparative study on nutrient removal of agricultural non-point source pollution for three filter media filling schemes in eco-soil reactors

2016 ◽  
Vol 14 (4) ◽  
pp. 600-608
Author(s):  
Fuyi Du ◽  
Qingjie Xie ◽  
Longxiang Fang ◽  
Hang Su
Keyword(s):  
Point Source ◽  
Nutrient Removal ◽  
Oxygen Transfer ◽  
Biomass Accumulation ◽  
Filter Media ◽  
Point Source Pollution ◽  
Nitrogen And Phosphorus ◽  
Nps Pollution ◽  
Nutrient Removal Efficiency ◽  
Non Point Source Pollution

Nutrients (nitrogen and phosphorus) from agricultural non-point source (NPS) pollution have been increasingly recognized as a major contributor to the deterioration of water quality in recent years. The purpose of this article is to investigate the discrepancies in interception of nutrients in agricultural NPS pollution for eco-soil reactors using different filling schemes. Parallel eco-soil reactors of laboratory scale were created and filled with filter media, such as grit, zeolite, limestone, and gravel. Three filling schemes were adopted: increasing-sized filling (I-filling), decreasing-sized filling (D-filling), and blend-sized filling (B-filling). The systems were intermittent operations via simulated rainstorm runoff. The nutrient removal efficiency, biomass accumulation and vertical dissolved oxygen (DO) distribution were defined to assess the performance of eco-soil. The results showed that B-filling reactor presented an ideal DO for partial nitrification–denitrification across the eco-soil, and B-filling was the most stable in the change of bio-film accumulation trends with depth in the three fillings. Simultaneous and highest removals of NH4+-N (57.74–70.52%), total nitrogen (43.69–54.50%), and total phosphorus (42.50–55.00%) were obtained in the B-filling, demonstrating the efficiency of the blend filling schemes of eco-soil for oxygen transfer and biomass accumulation to cope with agricultural NPS pollution.

Agricultural Nonpoint Source Pollution Model Analysis and Application

2012 ◽  
Vol 178-181 ◽  
pp. 926-929
Author(s):  
Qing Yang ◽  
Sheng Nan Sun ◽  
Zheng Hai Jiang ◽  
Li Xian Ying ◽  
Zhe Jun Liu
Keyword(s):  
Point Source ◽  
Best Management Practices ◽  
Management Practices ◽  
Swat Model ◽  
Model Analysis ◽  
Point Source Pollution ◽  
Mechanism Model ◽  
3S Technology ◽  
Improved Model ◽  
Non Point Source Pollution

With the point source pollution was effectively treated, non-point source pollution, especially the agricultural non-point source pollution (ANPSP), is becoming the main problem in environment. The research is focused on the model analysis and application, which could be scientifically distinguish and effectually control ANPSP. Four kinds of models were introduced here with the development of non-point source pollution, as experience statistical model, mechanism model, function model, improved model by 3S technology and the uncertain analyze. Among these models, HSPF and SWAT model were successfully applied in best management practices (BMP) for ANPSP control. In the future, our country should base on the introduction of the foreign mature techniques, which combine the 3S technology and the uncertain improved model, then enhance the autonomous model research and build the basic database.

scholarly journals Non-point source pollution simulation in karst region based on modified SWAT Model-A case study in Henggang River Basin

2018 ◽  
Vol 30 (6) ◽  
pp. 1560-1575 ◽  
Author(s):  
LAI Geying ◽  
◽  
YI Shukun ◽  
LIU Wei ◽  
SHENG Yinyin ◽  
...  
Keyword(s):  
Point Source ◽  
River Basin ◽  
Swat Model ◽  
Karst Region ◽  
Point Source Pollution ◽  
Non Point Source Pollution
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