bbk 000000

UDC

The Rostov Vodokanal Celebrates its 145-year Jubilee

bbk 000000

UDC 628.17.001.4

Reconstruction of the Troitsk Group Water Supply System (Commemorating the 85^th Anniversary of the Novorosiysk Vodokanal)

bbk 000000

UDC

Ryabkov V. I.

Development of Water Supply-Sewerage Economy of the City of Yoshkar-Ola (Commemorating the 65^th Anniversary of the Vodokanal)

bbk 000000

UDC

Samorodov A. A., Voloshin K. I.

New Treatment Facilities will Turn the City of Vladivostok into the City of the XXI Century

bbk 000000

UDC 628.16.081.3:162.82

SMIRNOV A. D., Davlyaterova R. A., Tkachenko S. N.

Perspectivity of Application of Carbon Fibrous Sorbents for Water Treatment for Technogenic Pollutions

Summary

The main characteristics and properties of carbon fibrous sorbents for their application in sorption treatment of surface water for oil products and phenols are studied. It is established that the activated fibrous sorbent has considerably better kinetics of sorption than traditional granulated carbons. It is also established that the sorption capacity and coefficient of protective action of a layer of carbon fibrous sorbents by 6 times higher by phenol and efficiency of treatment by 1,5 times higher comparing with granulated activated carbons. The high efficiency and perspectivity of the use of carbon fibrous sorbents in combination with ozonization for removal of organic pollutants from surface water and wastewater are revealed. The technological decisions making it possible to reduce the size of equipment by 20–100 times are found. At the same time the sorption capacity by special-purpose biotoxicants increases by 1,5–3 times comparing with traditional materials at considerable reduction of costs for construction of large objects.

Key words

potable water , oil products , surface water treatment , phenols , carbon fibrous sorbent , granulated carbons , ozonsorption

bbk 000000

UDC 628.136:725.74.002.56.004.1

Medkov B. K.

Features of Operation of Control and Measuring Equipment in Water with Higher Carbonate Hardness

Summary

Reasons for the failure of control and measuring equipment determining the free residual chlorine in a swimming pool’s water are considered. In process of the equipment operation deposits on a measuring electrode of a running-water cell and corrosion of a counter electrode are observed. The inspection of the swimming pool’s water treatment system, chemical analysis of deposits on the measuring electrode and analysis of the pool’s water allow to suppose that this water composition favors the calcium carbonate deposition on the surfaces of pipelines and equipment. The assessment of water stability shows that the index of saturation with calcium carbonate is sufficiently high. Results of the experimental study of stabilizing treatment of water for the purpose of reducing the index of saturation with calcium carbonate are presented. Dozes of reagents selected optimally favor the normal operation of equipment.

Key words

water treatment , swimming pool , free chlorine measuring system , stability index , carbonate deposits

bbk 000000

UDC

In Memory of Evgeny Fedorovich Kurgaev

bbk 000000

UDC 628.356.57.001.5

SHVETSOV V. N., MOROZOVA K. M., Smirnova I. I., Semenov Mikhail, Lezhnev M. L., Ryzhakov G. G., Gubaydullin T. M.

The Use of Bioblocks at Wastewater Treatment Facilities

Summary

Results of the laboratory study of an aeration tank operation for the purpose of technological comparison of two new modified bioblocks, BBZ-45P-14 and BBZ-65P-10, having the similar surface structure but different geometric parameters are presented. It is shown that these bioblocks can be used successfully in aeration tanks for immobilization of microorganisms of activated sludge. The tests of loading material samples have been carried out at biomass density in bioblocks of 0,3–0,36 kg/kg, at equivalent concentration of sludge in the system – 2,3 g/l. The bioblock BBZ-65P-10 is used preferably in aeration tanks, BBZ-45P-14 – in aeration tanks with low load on activated sludge, blocks of aftertreatment for additional clarification of water treated biologically and in biofilters for build-up of biological film. The comparison of results of tests on rate of activated sludge adhesion obtained with new types of bioblocks and BBZ-65 tested earlier makes it possible to conclude that the adhesion process goes off more intensively on rougher surfaces of modified models of bioblocks.

Key words

wastewater , biological treatment , biofilter , bioblock , aeration tank , secondary settling tank , adhesion , activated sludge

bbk 000000

UDC 628.35:663.5

Aronova T. A.

The Use of Bioblocks at Wastewater Treatment Facilities

Summary

Results of the experimental study of development of a flow chart of wastewater treatment at distilling plants processing the grain raw material are presented. A two-stage flow chart with sludge separation at each stage is rational for such processes. The process of biochemical oxidation of organic pollutants in the course of biological treatment of concentrated wastewater of distilling plants is described the most reliably with the equations of fermentative reactions. Kinetic constants and oxidation coefficients for this type of wastewater in two-stage aeration tanks have been determined; technological parameters of aeration tanks operation up to any desired level of treatment ensuring the conditions of treated wastewater discharge have been calculated on the basis of them. Optimizing calculations have been made and technological parameters of the optimal conditions of the two-stage aeration tank operation up to indicators of complete biotreatment have been determined according to these kinetic constants determined.

Key words

aeration tank , high concentrated wastewater , two-stage treatment , kinetic constants , optimization of treatment systems