SHIZhi-hao,ZHUHai-tao,OUYANG Zhuo-ming,et al.Relationship between Suspended Solid and Turbidity in Raw Water from Han River in Wuhan[J].China Water & Wastewater,2022,38(21):51-56.
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Relationship between Suspended Solid and Turbidity in Raw Water from Han River in Wuhan

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第38卷 Number: 第21期 Page: 51-56 Column: Date of publication: 2022-11-01
Author(s):
SHI　Zhi-hao1; 2;  ZHU　Hai-tao3;  OUYANG Zhuo-ming1;  LUO　Fan1;  SHEN　Zhong-ming3;  ZHOU　Yan-chun3
（1. School of Environmental Science and Engineering， Huazhong University of Science and Technology， Wuhan 430074， China； 2. Shenzhen Energy Environment Co. Ltd.， Shenzhen 518000， China； 3. Wuhan Water ＆ Wastewater Engineering Design Institute Co. Ltd.， Wuhan 430012， China）
Keywords:
water supply plant;  suspended solid;  turbidity;  linear regression
Abstract:
To determine the conversion relationship between SS and turbidity in raw water from A and B water supply plants in Wuhan, SS and turbidity in raw water were tested twice a week for one and a half years, and the linear regression coefficients of SS and turbidity in raw water from the two plants were obtained by linear fitting (1.698 1 and 1.722 5, respectively). According to the turbidity data of raw water for many years, lognormal distribution curve was used to calculate the design turbidity of A and B plants at guarantee rate of 75%, which were 32.61 NTU and 35.38 NTU, respectively. The values were close to those calculated by the turbidity coefficient of raw water recommended by Standard for Design of Outdoor Water Supply Engineering (GB 50013-2018). However, the design turbidities were 61.39 NTU and 77.00 NTU at guarantee rate of 95%, which were lower than the calculated values. When the guarantee rate was 75% and 95%, the 95% confidence intervals of SS of plant A were (55.37±20.50) mg/L and (104.24±20.94) mg/L, and those of plant B were (60.96±20.69) mg/L and (132.67±22.27) mg/L. Seasonal variation had a greater influence on SS design value of raw water. SS was the highest in autumn calculated by the regression coefficients of different seasons and the historical turbidity, the predicted SS in raw water of plant A at guarantee rates of 75% and 95% in autumn were 15.48% and 21.11%, higher than those calculated by conventional methods. By contrast, the predicted values were 24.52% and 31.85% higher in plant B.
Last Update: 2022-11-01