in this study, modeling and optimization of coagulation and flocculation processes in cod removal of galvanized wastewater treatment plant of mobarakeh steel complex (msc) were studied. experiments of this study were designed using response surface method which is one of the most efficient methods in experimental design. the variables assessed in this study, are four factors including ph, input...

The aim of this work was the study of the combination of an inorganic pre-polymerized coagulant (PACl) with ferric species and polysilicic acid in various mixing order, Al/Fe/Si and OH/Al molar ratios, and two polymerization techniques for the production of a unique reagent representing a coagulant, more efficient than commercial PACl-18 and laboratory prepared PACllab for water or wastewater t...

In this study of coagulation operation, a comparison was made between the optimum jar test values for pH, coagulant and coagulant aid obtained from traditional methods (an adjusted one-factor-at-a-time (OFAT) method) and with central composite design (the standard design of response surface methodology (RSM)). Alum (coagulant) and polymer (coagulant aid) were used to treat a water source with v...

The polysaccharides and proteins of various seeds have bioflocculant properties. The performance of naturally occurring Strychnos potatorum was evaluated against the chemical coagulant alum. The study involved extensive jar test experiments using Strychnos potatorum suspension and alum solution either independently or in combination with spiked turbid water prepared in the laboratory. It was ob...

the textile industry has long been one of the largest of water users and nolluters and there has been little success in developing low cost treatment methods , which the industry urgently needs to lessen the pollution loads it discharges to streams. the obiective of this preparatory study was to determinen the effects o f coagulants and aid coagulant s as alum, ferrous sulfate , ferric sulfate ...

textile industry is the major source of water consumption and wastewater pollution.there are various treatment techniques to remove textile wastewater pollution. coagulationflocculation is a widely used process to remove pollution due to suspended particles. in this research, different coagulants like alum, lime, fecl3, feso4 and mgcl2 were applied to select the suitable ones with optimum remov...

An increase in factor VII coagulant activity is known to be an important risk factor for ischaemic heart disease. Four hundred and eight healthy male Post Office workers were screened in an occupational survey. Sixty eight (16.5%) of these had values of factor VII coagulant activity greater than 1.0 SD above the age related mean. A randomised double-blind crossover study was undertaken to inves...

THIS book is a report of the symposium on thrombosis and related problems arranged by Prof. P. A. Owren, Prof. R. B. Hunter, and Dr. W. Walker in the University of St. Andrews, Dundee, Scotland. A team of international experts were gathered together for this symposium and the proceedings were conducted in English. The book contains all the papers which were given together with the discussions w...

Household waste is originating from kitchens, bathrooms, laundry, former household industrial and human waste. generated every day the amount too much to match population has potential pollute poison environment. Management of in order reduce impact on environment public health. The method used this study a batch system through coagulation-flocculation process. first step by adding chlorine lim...