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Sucrose was used in the demonstrative project as the pollutant material. At 9:00–9:05 on March 22, 2014, 1,000 kg of sucrose was released into the channel at the Baiyunzhuangbei Bridge, which is 2.148 km upstream of the Puyang check gate. Three monitoring points were set upstream of the Puyang check gate and the basic information for each monitoring point is shown in Table 2.

Table 2

Information on the research monitoring points

No.Distance to Baiyunzhuangbei Bridge (m)Flow velocity (m/s)Arrival time of the peak concentration (h)The peak concentration at monitoring points (mg/L)
429 0.08 1.33 20.17 
1,508 0.07 6.08 13.89 
1,698 0.06 9.08 12.31 
No.Distance to Baiyunzhuangbei Bridge (m)Flow velocity (m/s)Arrival time of the peak concentration (h)The peak concentration at monitoring points (mg/L)
429 0.08 1.33 20.17 
1,508 0.07 6.08 13.89 
1,698 0.06 9.08 12.31 

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