Assessing of channel roughness and temperature variations on wastewater quality parameters using numerical modeling

Journal of Applied Sciences and Environmental Management

ALAMATIAN, EBRAHIM¹  FOERSTNER, NISHA¹  GHOLIPOUR, AMIR¹ 

关键词: channel roughness;    wastewater;    temperature;    QUAL2K;    BOD;    DO;   

DOI  :  

学科分类：环境科学（综合）

来源: University of Port Harcourt * Department of Pure and Industrial Chemistry

【 摘 要 】

Nowadays, problems and barriers to supply adequate water and addressenvironmental issues have caused wastewater treatment (WWT) to be considered a highpriority. In light of high costs of WWT, using natural capacities to reduce pollution could bepotentially economically significant. In this paper, the impact of varying temperature andchannel roughness has been investigated on the wastewater quality parameters using theQUAL2K (Q2K) Numerical Model. The results show, as temperature increases, the reductionrate of Biochemical Oxygen Demand (BOD) is more than the Chemical Oxygen Demand(COD). Also, organic nitrogen (ON), organic phosphorus (P), coliforms, total organic carbon(C), total suspended solids (TSS) and total nitrogen (TN) decrease; but nitrate concentration(NO3) increases. This numerical assessment indicates that the purification rate is greater astemperature rises above 30°C. The results show that by increasing channel roughness, BOD,COD, Particle Organic Matter (POM), organic nitrogen, phosphorus and coliforms havedescending trends while inorganic phosphorus and ammonium concentrations have ascendingtrends. According to the obtained results, nitrate (NO3) has a decreasing trend when theManning Roughness Coefficient (N) is higher than 0.04 along the channel, but is reducedwhen “N” is less than 0.04.

【 授权许可】

Unknown