Coagulant-flocculant from secondary resources for treatment of industrial and municipal wastewater
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Дата
2021
Науковий керівник
Назва журналу
Номер ISSN
Назва тому
Видавець
КПІ ім. Ігоря Сікорського; ТОВ «Українська водна спілка»
Анотація
Coagulants and flocculants are used almost at all drinking water supply facilities, wastewater
treatment plants of municipal and industrial enterprises in Belarus and Ukraine to intensify and
increase the efficiency of the processes of purification, clarification and discoloration of water and
wastewater. Mainly as coagulants aluminum and iron salts are used, as flocculants - active silicic
acid, starch, cellulose derivatives, polyacryloamide, etc.
Sulfuric acid treatment of alumina-containing raw materials allows, in the course of one process, to
obtain a mixture of active substances - salts of aluminum, iron, active SiO2. In this case, there is no
need to separate the salt from suspended particles and colloidal silicic acid. The presence of
suspended dispersed particles in the active substance, as well as colloidal silicic acid and its salts,
enhances and accelerates coagulation. The resulting solution, along with aluminum sulfate,
contains silicic acid, which acts as a flocculant in the process of water purification. In addition, the
processed products also contain ferrous sulfate, in the presence of which a better coagulation result
is achieved.
Industrial tests of the coagulant-flocculant were carried out in order to purify wastewater from oil
products. The test results showed that the effectiveness of the coagulant-flocculant in reducing the
content of oil products in wastewater is comparable to the currently used aluminum sulfate.
The effectiveness of the developed coagulant-flocculant for the purification of drinking water was
evaluated in comparative tests with a coagulant “Polvak-68” in the mode of trial coagulation on a
laboratory flocculator. The research results are showed that the value of all parameters
characterizing the contamination of the source water are highty decreasing for experimental
coagulant-flocculant in compare with regular product.
Опис
Ключові слова
coagulant, flocculant, aluminum, wastewater, drinking water, коагулянт, флокулянт, алюміній, стічна вода, питна вода
Бібліографічний опис
Coagulant-flocculant from secondary resources for treatment of industrial and municipal wastewater / V. A. Shablovski, А. V. Tuchkoskaya, V. А. Rukhlya, О. G. Pap // Вода і водоочисні технології. Науково-технічні вісті. – 2021. – № 2(30). – С. 27-33.