Purification of waters and elimination of organochloric insecticides by means of active coal

摘要

Pollution of water and the determination of the degree of its pollution with numerous physical, chemical and biological polluters have become general, ever increasing social and health related problems. Within this study, the concentrations of some most frequently used organochloric insecticides (OCI): α-hexachlorocyclohexane (α-HCH), γ-hexachlorocyclohexane (lindane), hepta-chlor, aldrin, dieldrin, endrin, dichlorodiphenyl trichlorethane (DDT) were investigated. OCI are highly toxic substances for the human population and their effective elimination from the environment is of paramount interest. To determine the OCI concentration in water samples, the EPA-608 method and the liquid-liquid extraction principle were applied. A procedure for OCI elimination was realized by passing the water over four columns filled with various active coals: KRF, K-81/B, NORIT ROW-0.8 and AQUA SORB CS. These active coals are carbonized coconut shells activated by different procedures. The obtained results indicated that best purification of potable and waste water achieved using a column with Norit Row-0.8 filling. Research proved that small quantities of OCI can also be effectively removed using a Norit Row-0.8 active coal filled column, without altering the organoleptic properties of the water, which meets the requirements of water purification processes.%Истражива?а у овом раду односила су се на налаже?е задоволаваjуhих поступака пречишhава?а вода контаминираних органохлорним инсектицидима, а да се, при томе, не промене органолептичка своjства воде. У том циу, за анализу су коришhени узорци пиjа-hих и отпадних вода. За одреhива?е концентрациjе OHI у узорцима воде коришhена jе EPA--608 метода и принцип течно-течне екстракциjе. Поступак одстра?ива?а органохлорних инсектицида ураhен jе пропушта?ем воде преко четири колоне, напу?ене различитим актив-ним углевима: KRF, K-81/G, Norit Row-0.8 и Aqua Sorb CS. Ови активни углеви су карбони-зоване луске кокосовог ораха активиране различитим поступцима. Добиjени резултати ука-зуjу на то да се наjболи ефекат пречишhава?а пиjаhих и отпадних вода постиже кориш-hе?ем колоне са Norit Row-0.8 пу?е?ем. Истражива?а показуjу да се коришhе?ем колоне напу?ене активним углем Norit Row-0.8 могу ефикасно уклонити и мале количине органохлорних инсектицида, а да се при том не промене органолептичка своjства воде, што задово-лава захтеве процеса пречишhава?а вода.