| 摘要 |
The invention relates to the processes for the preparation of reagents with coagulating, flocculating and decontaminating properties and can be used for the purification of natural and waste water, and also for the conditioning of the sludge of different origin. The process for the preparation of coagulant by the modification method of solutions of silicic acid of aluminium by sulphate is achieved by the way that as base a high-performance coagulant-flocculant is taken, obtained by mixing at determined conditions of solutions of aluminium sulphate and silicic acid, and decontaminating component in a form of molecular chlorine, sodium hypochlorite or chlorine dioxide is added either to the finished product, or in one of the stages of its preparation. The process provides decontaminating properties of coagulant and effective purification of water. |
