Process for producing composite coagulant polymeric aluminium chloride ferrum

Abstract

The aluminum iron chloride polymer as composite coagulant is produced with aluminum-containing material and iron-containing material and through acid dissolution, oxidation with chlorate, neutralization with calcium aluminate powder and polymerization. Compared with available technology, the present invention has the advantages of low production cost, capability of being used as drinking water purifying agent, simple usage, and wide application range.

Description

(1) Technical field

[0001] The invention relates to a production method of a water purifier, especially a production method of a composite coagulant polyaluminum ferric chloride. The water purifier is mainly used for the purification of domestic water and non-domestic water, especially for the treatment of low turbidity water. deal with. (2) Background technology

[0002] The water purifying agents commonly used at present mainly contain two major classes of inorganic coagulants and organic flocculants, wherein the polyaluminum ferric chloride water purifying agent (abbreviated as PAFC in English) closer to the present invention, the used method of its disclosed production method The raw materials are relatively single, there is no oxidation reaction in the production process, and the Fe in the product 2+ The content is higher. A Chinese patent once disclosed a "Highly Polymerized Aluminum Ferric Chloride Composite Coagulant and Production Method" (Patent No. 95119000.8), ...