Аtamanyuk A. Reduction of anthropogenic impact on the environment by treating the sludge flooded steel electric shock

The thesis is devoted to the research and development of new technology of processing sludge direct current in gravitational dewatering, without classifying particle size distributions, thus avoiding the significant costs to their mechanical dewatering on vacuum filters and filter presses, and get a slurry with the required humidity. We obtain the following results: under the influence of a constant electric current to the gas cleaning sludge from blast furnace and sinter plant their degree of compaction increases, there is a reduction of the radii hydrated cations Ca2+, which is confirmed to estimates of hydration shells made of calcium by the method of M.I.Bakeeva. The mixing ratio of sludge gas treatment furnaces and sinter plant, as (2,5-3,0): 1 and sewage 7,5:1, at T = 60 ? C, and U = 200 V can improve the degree of compaction to 28,6 % and moisture content to 35,4 %. As a result, the cost of electricity, the gravitational dewatering sludge mixture at a current density of 73,7 A/m2 until the moisture content 24 - 25 % of the 14,18 kW·h/ t. Obtained in the research data used to develop the hardware and technological scheme sump, which allows by design features improve drainage to the extent necessary. To develop a design patented. The methods of sludge dewatering iron metallurgy. Developed a way to get to the two patents. Тhe calculations of economic efficiency of the new iron sludge dewatering technologies for applications in the steel mill "Zaporizhstal" show that the economic impact of the introduction will be 7 996 920 U / year. Ecological efficiency of the worked out technologies provided possibility of their use as bases at development of the created industrial options and increase of ecological safety in the district of placing of places of accumulation of wastes of metallurgical.