Method for preparing modified poly-ferric chloride coagulant
The invention relates to a method for preparing modified poly-ferric chloride coagulant, which comprises the following steps of: adding sufficient waste iron scraps and carbon powder into the hydrochloric acid steel acid-washing waste liquid of a mechanical processing industry; after reaction is fin...
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creator | ZHOU QINGFANG GUO CHANGZI OUYANG YANYING SUN GENHANG LIAN PEICONG |
description | The invention relates to a method for preparing modified poly-ferric chloride coagulant, which comprises the following steps of: adding sufficient waste iron scraps and carbon powder into the hydrochloric acid steel acid-washing waste liquid of a mechanical processing industry; after reaction is finished, filtering, wherein the filter liquid is the purified hydrochloric acid steel acid-washing waste liquid; adding the purified hydrochloric acid steel acid-washing waste liquid into a reactor, starting a stirrer, slowly adding the mixed liquid of industrial sodium silicate and sodium chlorate at constant speed and ageing at room temperature to obtain the modified poly-ferric chloride coagulant. The industrial sodium silicate and the sodium chlorate are mixed into the mixed liquid, the mixed liquid is added into the purified hydrochloric acid steel acid-washing waste liquid under the condition of stirring, the ferric iron generated after ferrous oxidation and silicon carry out interpenetrating network type polym |
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subjects | CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F INORGANIC CHEMISTRY METALLURGY |
title | Method for preparing modified poly-ferric chloride coagulant |
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