Tag:reeking substances

№7|2010

ENVIRONMENTAL PROTECTION

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UDC 628.52

Steglenko A. V.

Control over Reeking Emissions from Sewerage Facilities

Summary

The Yatagan plant used for treatment of air for gases generated at sewerage treatment facilities is described. This equipment has been developed by the Ecopromika Co. in cooperation with scientists of the M. V. Lomonosov Moscow State University and the D. I. Mendeleev Russian University of Chemistry and Technology.

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№10|2013

WASTEWATER TREATMENT

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UDC 628.31.504.3.054

Rublevskaya O. N.

Measures on preventing malodors release at the facilities
of SUE «Vodokanal of St. Petersburg»

Summary

SUE «Vodokanal of St. Petersburg» has been introducing and testing different equipment for gas purification with the aim of preventing malodors release at the wastewater facilities. The experience of applying gas purification technologies at these facilities is analyzed. It was determined that the specified features of STOPKR sorption-plasma-catalytic gas purification unit and OPVS biological air oxidizing unit are efficiently used at the sewage pumping stations. The economic inexpedience of using STOPKR method at input concentrations of toxic substances higher than 1 g/m3 is a disadvantage. Testing OPVS filter in sewers showed positive results. The disadvantages of OPVS filter are in clogging of filter elements during operation as well as difficulties in processing multicomponent gas mixtures and mixtures of variable composition because of the specificity of the resulting microbial strains. The results of pilot testing TSUF-2000-400-I gas purification system showed the absence of malodors around sewer wells and convenient operation of the unit. The use of different filters including GreenKomplekt carbon filter-based units did not give any meaningful results. To control odor at the wastewater sludge landfills fine spraying of deodorant solution along the periphery of the landfill was suggested. At the sludge incineration plants exhaust gases pass three-stage purification with the use of electrostatic precipitation. At the wastewater treatment facilities the construction of either entire process flow or partially closed system was suggested. The prospects if introducing various technical and technological methods at each of the wastewater facilities are determined.

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№3|2014

WASTEWATER TREATMENT

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UDC 628.31.504.3.054

Kaszuk Brice, LOBANOV F. I.

The main trends in the use of deodorization to control malodorous substances

Summary

Elimination of odors caused by malodorous substances at the wastewater treatment facilities is provided with the use of oxygen-containing organic substances by interaction in the air between molecules of sulfur or nitrogen compounds (with sour or fishy smell) and molecules of oxygen-containing substances. Depending upon the composition of malodorous air which contains usually up to 5–8 different compounds (hydrogen sulfide and mercapto compounds; ammonia and various amines) different combinations of aldehydes and ketones are selected. The use of various combinations of odor-blockers provides for the optimal air deodorization results. Deodorant compounds can be used only if the concentration of malodorous substances is lower than maximum permissible limits for atmospheric air. The statistic and dynamic methods of oxygen-containing organic substance molecules distribution in the air are presented. The recommendations on the use of deodorants for odor control at different public utilities (wastewater sludge mechanical dewatering facilities, pumping stations, sewers, settling tanks, ventilating systems) are given.

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№7|2016

ENVIRONMENTAL PROTECTION

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UDC 628.2:677.027.623.71

Svitskov S. V., DANILOVICH D. A., Azarov V. N.

Wastewater treatment facilities as a source of malodors: causes, characteristics and methods of control

Summary

Odor nuisance is a typical problem of many wastewater treatment facilities. Up to the present moment this problem in Russia was solved exclusively by establishing sanitary protection zones. Malodor buildup is caused by emission of reduced compounds of sulfur, nitrogen and some other organic compounds. For the last year the guidelines for determining malodors (GOST-R was adopted) and the methods of eliminating emissions from public wastewater treatment facilities were for the first time included into the national regulations (the relative section was included into the technical information handbook on best available technologies ITS 10-2015). The information on the methods of measuring odor at the water wastewater treatment facilities is presented. The data on odor release from all the main open process wastewater and sludge treatment units is stated. The classification of these units (four groups) by the extent of odor release is presented. The factors that influence the odor strength are given. The main methods used for elimination of malodors from wastewater facilities are described. Meeting the requirements for cleaning gas emissions and eliminating odors can be ensured with the help of adsorption treatment and reaction-active substances spray-up across the area of emission sources.

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vstmag engfree 200x100 2

mvkniipr ru

Российская ассоциация водоснабжения и водоотведения

Конференция итог

ecw20 200 300

VAK2