REVERSE OSMOSIS METHOD FOR WATER PURIFICATION AND PREPARATION OF BUILDING MATHERIAL FROM SILICIC ACID GEL BINDING COMPONENT

摘要

In many cases it is unnecessary to regard concentrates derived from reverse-osmosis water treatment as waste or even hazardous waste. Frequently water to be treated contains alkali hydrogen carbonates and it becomes worthwhile in such cases, to convert concentrates into a gel. This is achieved by addition. of water glass. Such gels lose water easily and are capable of forming solid structures with a large number of (building) materials. A mixture of gel and slag forms a hard structure, perhaps even a harder structure than the basalt it resembles.