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Application filed by Biofil LtdfiledCriticalBiofil Ltd
Priority to MYPI89001313ApriorityCriticalpatent/MY104221A/en
Publication of MY104221ApublicationCriticalpatent/MY104221A/en
A FILTER DEVICE FOR USE IN THE TREATMENT OF WATER TO RENDER IT POTABLE, WHICH IS OF PARTICULAR VALUE IN EMERGENCY SITUATIONS, COMPRISES EXO-POLYSACCHARIDE PRODUCING, GRAM-NEGITIVE BACTERIA SUPPORTED UPON A WATER-PERMEABLE MATERIAL WHICH IS NON-TOXIC TO MICROORGANISMS AND TO HUMAN BEINGS, IS RESISTANT TO TEMPERATURES WITHIN THE RANGE FROM-150?C TO + 65?C, AND IS NOT READILY BIODEGRADABLE. THE DEVICE BE FREEZE-DRIED TO ENABLE IT TO BE STORED UNTIL IT IS REQUIRED FOR USE AND MAY THEN BE REACTIVATED BY THE ADDITION OF WATER. IT MAY BE USED AS THE SURFACE LAYER IN A SLOW-SAND FILTER.
Soil-like material prodn. from sewage sludge - by adding acidic ferrous salt soln., alkaline earth base, silicic cpd., dry alkaline earth base, removing water and ageing