The The Effect of Velocity Gradient and Camp Number on Solids Removal using Bio-Coagulant from Corbula faba Hinds Shells

Abstract

The TSS and TDS values of water are required to meet the standard. Like coagulation, the pretreatment process in water helps reduce solid content in water. The coagulant destabilizes water pollutants and helps flocs formation with the coagulation process. This paper studies the performance of chitosan bio-coagulant produced from Corbula faba Hinds shells. The velocity gradient and the Camp number of solids removal were also evaluated. The velocity and period of rapid mixing varied from 110 to 150 rpm, and the velocity gradient (G) was 181.2 to 288.5 s-1. The mixing period also ranged from 1 to 5 minutes. The highest TSS and TDS removal resulted in 140 rpm or 260.2 s-1 and 4 minutes of mixing. The residual TSS and TDS decreased with the increase of Camp Number until reaching a point and increased again afterward.

Effects of solid additives and inorganic ligands on the efficiency of metallic iron- based water treatment system

“…This is because experiments investigating the impacts of the mixing speed on the efficiecy of MB discoloration in Fe 0 /H2O systems have not considered any accompanying quiescent batch experiments (mixing speed: 0 rpm). The considered mixing intensities were all larger than 100 rpm which corresponds to the optimal mixing intensities for flocculation , Polasek 2011, Nurmawati et al 2022. More so, the experiments were not designed to establish any reaction mechanism, but rather to optimize the operational conditions in treatability tests (Zawaideh and Zhang 1998, Choe et al 2000, Sun et al 2006, Hwang et al 2011, Stieber et al 2011.…”