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Purification of Oil-Contaminated Wastewater with a Modified Natural Adsorbent

Chukaeva Mariia, Zaytseva Tatyana, Matveeva Vera, Sverchkov Ivan

Ecological Engineering & Environmental Technology

2021

Vol. 22, iss. 2

46--50

Water purification from oil and oil products is the final stage of its preparation before injection into the oil reservoir. Natural sorbents are preferred over synthetic ones for use on drilling platforms. They have minimal negative impact on the environment as well as constitute renewable and biodegradable resources. Several adsorbents, based on various natural materials, which could be potentially used for wastewater treatment systems on drilling platforms, were selected. Comprehensive studies of natural sorbents were conducted to determine the possibility of their use as a filtration material for wastewater treatment from oil and oil products on the drilling platforms. As a result of laboratory studies, it was found that the most promising solution is the use of several types of nut shells, which showed the best ratio of abrasion resistance and adsorption characteristics. Among the studied shell samples, pecan shells showed the highest oil product adsorption. As a result of the temperature treatment of the sorbent, it was possible to increase the value of oil products adsorption twice and the value of adsorption activity by almost 13 times without reducing the strength characteristics. It was found that it is advisable to carry out carbonization at a temperature of 400°C.