Water Supply, Construction Systems for Water
Article: received12.02.2020; reviewed: 30.03.2020; accepted: 03.06.2020. The study was carried out with the financial support of the Russian Foundation for Basic Research within the framework of the scientific project N 20-38-90004.
DOI: http://www.dx.doi.org/10.24866/2227-6858/2020-4-9
Volkova V., Kundenok S., Volkov D.
VLADISLAVA VOLKOVA., Postgraduate student, ORCID: 0000-0001-9078-9858, vladavibi@bk.ru
SVETLANA KUNDENOK, Postgraduate student, Senior lecturer, 14sveta65@mail.ru (corresponding author)
Politechnical Institute, Far Eastern Federal University
Vladivostok, Russia
DMITRY VOLKOV, Foreman on operation of module sewage stations, volkov_dima01@mail.ru
Primorsky Vodokanal Company
Vladivostok, Russia
Methods for coprecipitation of heavy metals in waste waters of galvanic production
with magnesium and calcium ions of seawater
Abstract: Experimental methods of reagent purification of galvanic impurities based on the precipitation of magnesium and calcium ions from seawater in the presence of sodium hydroxide and aluminum salt are considered. The influence of various reagents on the process of coagulation of impurities and sedimentation rate of flakes is considered. Based on the experimental data obtained by the authors, a waste water treatment method has been developed for a shipbuilding company allowing to reduce the sedimentation time of waste water and the cost of reagents.
A seria of lab experiments was carried out on the deposition of heavy metals in waste water of galvanic production by various methods, which reduces the cost of reagents. The methods of probability theory and mathematical statistics are applied to optimize the number of experiments. The regression equation was obtained on a dimensionless scale relatively to time with the approximation parameters of the results of computer simulation. The model shows the formation of flocs in time.
Keywords: galvanic drains, reagent treatment with sea water, modeling of the coagulation process.
Contribution of the authors: the authors contributed equally to this article.
The authors declare no conflicts of interests
See the reference in English at the end of the article