Investigation of natural flocculants for use in wastewater purification processes
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Дата
2022
Науковий керівник
Назва журналу
Номер ISSN
Назва тому
Видавець
КПІ ім. Ігоря Сікорського; ТОВ «Українська водна спілка»
Анотація
Contaminated industrial wastewater significantly reduces the volume of drinking water. A wide
range of composition and insufficient treatment of wastewater from enterprises such as the textile,
chemical or metalworking industries, which often fall into water bodies, negatively affect the state
of aquatic ecosystems, and that is why it is necessary to carefully select the optimal treatment
method. Among the types of wastewater treatment, the coagulation-flocculation process has gained
considerable popularity, which occurs due to the adhesive and adsorption properties of coagulants
and flocculants, which is widely used in the purification technologies of both natural and industrial
wastewater from colloidal particles, radionuclides, phosphates, dyes and suspended particles.
Coagulants are able to hydrolyze in water with the formation of various coagulation structures with
high adsorption and adhesion properties, flocculants, in turn, contribute to the formation of flakes,
sedimentation and filtration, stabilize the cleaning process, improve quality and increase the
efficiency of equipment.
During the experimental work, the employees of the Department of Chemical Technology and
Water Treatment established the advantages of using natural flocculants in the process of
wastewater treatment using colored model solutions as an example. A study was made of the
influence on the degree of purification of such characteristics as the type of flocculant (for example,
chitosan and sodium alginate) and coagulant (Al2(SO4)3-18H2O, ALS, PIX-318), the optimal dose of
reagents, the type of dye (direct, active, dispersed) , settling time and content of residual ions.
During the research, the Jar-test method was used, the essence of which is to simulate the process
of floc formation, which is typical for industrial wastewater treatment plants. The study of the
composition of model water samples was carried out using the spectrophotometric analysis method.
Опис
Ключові слова
coagulants, dyes, flocculants, wastewater, wastewater treatment, барвники, коагулянти, очищення стічних вод, стічні води, флокулянти
Бібліографічний опис
Solodovnik, T. V. Investigation of natural flocculants for use in wastewater purification processes / T. V. Solodovnik, I. K. Yakymenko // Вода і водоочисні технології. Науково-технічні вісті. – 2022. – № 2(33). – С. 9-14.