Melnik O. Utilization of sewages of galvanic production and their neutralization

The dissertation is devoted to the problem of decrease of chrome containing sewages technogenic influence of galvanic productions. The analysis of the present situation is conducted in the field of biosphere contamination by chrome containing connections. The home and foreign technologies of galvanic flows cleaning are studied. An electrocoagulator is worked out for rendering harmless of chrome containing sewages. During experimental researches optimal structural and regime parameters of electrocoagulator's work which allow to conduct cleaning of chrome containing flows with efficiency of 99,96% are determined. On the basis of the studied macro kinetic features of electro-coagulation mechanism the physically mathematics model of the process for determination of influence of electrocoagulator technological operation regime on each of the stages of flow cleaning is made. The analysis of formation and neutralization of chrome containing flows is conducted in the OJSE "Sumy M.V. Frunze MSPA". Taking into account the technological regimes of the enterprise the criterion of ecological danger is worked out and calculated. Recommendations concerning decreasing of the technogenic loading of the enterprise to the region, in particular due to introduction of local electrocoagulative options are given. The methodology of engineering calculation of electrocoagulator which has allowed to project and test the electrocoagulative option on the base of EJST "Hlukhiv plant "Electropanel" is elaborated. The experimental researches of industrial model showed its high efficiency and reliability in exploitation. The complex scheme of sewages cleaning is elaborated with the use of electro-coagulative vehicles for enterprises with the reserved cycle of water rotation.