Transcription of Water Soluble Polymers - SNF
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Water Soluble Polymers - SNF
Water Soluble Polymers Introduction 1. Water Soluble Polymers cover a wide range of highly varied families of products of natural or synthetic origin, and have numerous uses. Among these families, synthetic Polymers , and more particularly coagulants and flocculants, are used mainly for facilitating the separation of materials in suspension in aqueous media . They also help to dewater sludge from various separa- tion processes. The separation of solids in a liquid medium takes place rapidly when the density of the particles is markedly different from that of the liquid medium. Either the particles settle out or they float on top of the liquid . Difficulties occur when the particle size allows it to remain in suspension in the liquid medium. In this case, the use of coagulants and flocculants allows separation to be carried out. 2 Table of contents 1I INTRODUCTION 1. II TABLE OF CONTENTS 2. III BASIC PRINCIPLES OF COLLOID SCIENCE 6. III-1 Colloidal suspensions 6. III-1-1 Hydrophobic colloids 6.
In liquid media and more particularly aqueous media,organic or inorganic materials are present in dissolved or solid form. These two forms are distinguished by the size of the particles. Dissolved compounds are: - Inorganic compounds, ions and/or organic com-pounds of low molecular weight with a particle size of at most 10-3 µm;
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