Deodorization of water at water treatment plants in the lower Volga with activated anthracite

Abstract

The need for deodorization of the Volga water during the development of blue-green and diatom algae is shown. Most often there is a smell that is characterized as moldy, earthy, sometimes fishy, these odors are caused by geosmin and 2-methylisoborneol, which are products of the metabolism of microorganisms, mainly cyanobacteria and actinomycetes, as well as many microalgae species. Presented are the results of laboratory and pilot studies of water carbonation using Donbas activated anthracite and wood powder sorbent of SPDK brand in the experimental setup. Prospectivity of water deodorization in the lower Volga flow is determined by the sorption method using powdered activated carbon (PAC) obtained by activating the anthracites of the coal deposit Obukhovskiy, Rostov Region. Pilot tests of water purification on the experimental setup showed the effectiveness of PAC application on the basis of the activated anthracite of the Gukovsky deposit, with the optimal dose of PAC being 15-25 mg / l with a dose of 20-30 mg / l coagulant aluminum oxychloride.