Method of estimating pollutant-holding capacity of small rivers under random multipoint generalization of planned sewage outlets and degradation coefficient uncertainty

• Main Authors: JIANG XIAOHONG, GONG YI, CHENG JILIN, ZHANG LIHUA, YUAN CHENGBIN, CHEN XING, WANG LIANG, CHENG HAOMIAO
• Format: Patent
• Language: Chinese; English
• Published: 22.06.2018
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention relates to a method of estimating pollutant-holding capacity of small rivers under random multipoint generalization of planned sewage outlets and degradation coefficient uncertainty. Themethod comprises the steps of (1) investigating and determining start sectional position x of a pollutant-holding section of a small river and the number n and positions of sewage outlet planned on the section, determining the number n' and positions xi (i=1, 2... n') of the generalized sewage outlets; (2) measuring and determining standard control sectional position x' of the pollutant-holding section of the small river, as well as start sectional pollutant concentration C0, average flow velocity u and river flow Q; (3) determining pollutant degradation coefficient k of the section of the small river and its uncertainty alpha according to the measuring results of step (2); (4) calculating mathematical expectation E (W) of pollutant-holding capacity of the section to serve as pollutant-holding capacity of the sec