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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Hauptverfasser: ZHOU QINGFANG, GUO CHANGZI, OUYANG YANYING, SUN GENHANG, LIAN PEICONG
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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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