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UDC 628.33:551.577.21
Gandurina L. V., Andriyash E. N., Lovlin V. M.
The efficiency of flotofloculation treatment of industrial storm oil effluents
Summary
The results of industrial-scale operation of flotoflocculation plant for industrial storm oil effluents treatment in КWI (Austria) dissolved-air flotation unit with the addition of Praestol 853 cationic flocculant are presented. It was shown that the efficiency of wastewater treatment in the terms of residual oil concentration can be ensured at the initial oily waste concentration as high as 1300 mg/l and flocculant dosage of 5.5 mg/l.
Key words
oil products , wastewater , pressure flotation , cationic flocculant
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UDC 628.349.08
FESENKO L. N., Ignatenko S. I., Tcherkesov A. Yu., Kostyukov V. P.
Improving the technology of strong sulfide wastewater treatment
Summary
The theoretically justified ways of improving the technology of deactivation of sulfide-alkaline wastewater generated in the tannery process cycle, during gas production, oil refining etc. are suggested. The development of ferro-catalytic sulfide oxidation with atmospheric oxygen regeneration of iron hydroxide that is circulating in the wastewater treatment process is a perspective direction in the management of recycled technology potential that ensures complete elimination of industrial emissions of hydrogen sulfide to the environment.
Key words
utilization , sulfide-alkaline wastewater , sulfides , pilot plant , sulfide-alkaline wastewater , regeneration
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UDC 628.16.081:661(24+48+63)
Gandurina L. V., Potapova L. V.
Precipitating capacity of AQUA-AURAT™30 coagulant in water treatment in the presence of calcium hydroxide
Summary
The results of experimental studies of simultaneous elimination of sulphates, phosphates and fluorides from water with AQUA-AURAT™30 aluminium polyoxychloride in the presence of calcium hydroxide are presented. It was shown that the standard concentration of sulphates and phosphates is ensured with the chemical dosage ratio 4.5 (as active СаО/Аl2О3) and рН 11. Fluoride concentration under the circumstances is decreasing from 11 to 2 mg/l. The standard fluoride concentration in treated water is ensured at рН 7.
Key words
coagulant , water treatment , phosphates , aluminium polyoxychloride , calcium hydroxide , sulphates , fluorides
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