Ali Reza Taheri Fard - Peter the Great St. Petersburg Polytechnic University, ۲۹ Politechnicheskaya St., St. Petersburg, ۱۹۵۲۵۱, Russia

This paper presents the study of synthetic perlite sodium silicate to reduce suspended solid and remove turbidity of mud water. Laboratory procedure were designed to quantify the suspended solids removal efficiency and variation in height of modified Secchi disk. 4 samples have been exposed to experiments containing sand, perlite sieved by mesh no. 8, SC (sodium silicate) perlite and micronized perlite. The tests manifest the use of SC perlite can exceedingly enhance the turbidity removal efficiency from muddy water. The modified Secchi disk has been devised by author to facilitate the experiments, in addition the quality index has been created by author to equilibrate quality and price. After much struggling, SC perlite has been introduced for having optimum performance

Sodium silicate, perlite, expanded perlite, filtration, Secchi disc