Challenges in Housing Utilities Sector

INTEGRATED SOLUTIONS IN STORM SEWER SYSTEMS

Vestnik MGSU 5/2018 Volume 13
  • Pupyrev Evgeniy Ivanovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, President of the Interregional Union of Designers, Professor of the Department of Hydropower and Water Resources, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.

Pages 651-659

Subject: ecological condition of residential areas as a whole depends not only on the state of atmospheric air, the quality of drinking water, the degree of purification of household sewage, but also on the sanitary condition of territories, which includes the timely cleaning of solid municipal waste (SMW), cleaning of the territory, collection and cleaning of surface runoff. To assess the environmental situation in the territory it is important to have numerical data on the level of pollution of the territory and urban soil, the proportion of water entering the ground, water flowing over the surface and the proportion of water entering the water treatment plant. In this paper, the surface runoff of a residential area has been studied, and methods for its collection and purification have been described. Research objectives: the author of the study pursued the following goals - determination of priority structural links in the system of diversion and cleaning of surface runoff, assessment of their influence on operability and stability of the system, development of a method for controlling the operation of the system. Materials and methods: results of theoretical studies, environmental monitoring, methods of system and factor analysis, expert assessments of technologies and water treatment facilities were used. Results: a technique is proposed and recommendations are given on drawing up a territorial scheme for diversion of surface runoff. A formula for estimating and calculating parameters of reservoir and water treatment facilities is proposed. The characteristics of treatment facilities of different types are given. Conclusions: areas of further systematization of the results are highlighted: development of a methodology for constructing a balance of surface waters in the territory, the cataloging of surface water treatment technologies, and development and evaluation of integrated schemes for collecting and cleaning surface runoff with an assessment of their ecological efficiency.

DOI: 10.22227/1997-0935.2018.5.651-659

Download

INVESTIGATION OF SEDIMENTATION PROPERTIES OF SLUDGE LIQUOR AT WASTEWATER TREATMENT PLANTS

Vestnik MGSU 5/2018 Volume 13
  • Kulakov Artem Alekseevich - Vologda State University (VoGU) Candidate of Technical Sciences, Associate Professor of the Department of Water supply and Waste Water Treatment, Vologda State University (VoGU), 15 Lenina str., Vologda, 160000, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Makisha Nikolay Alekseevich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor of the Department of Water Supply and Waste Water Treatment, Director of Education and Research Centre of Water Supply and Waste Water Treatment, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Shafigullina Alin Faritovna - Vologda Research Center of the Russian Academy of Sciences (VolSC RAS) Postgraduate Student, Vologda Research Center of the Russian Academy of Sciences (VolSC RAS), 56a Gorkogo str., Vologda, 160014, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Harder Raimo - Bauhaus-university Weimar Diplom-Ingenieur, Lecturer, Transport System Planning Department, Bauhaus-university Weimar, 13 Marienstrasse, Weimar, Germany; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 643-650

Subject: the article focuses on investigation of kinetics of sludge liquor sedimentation and on determination of its characteristics; the relations between parameters of activated sludge such as mixed liquor suspended solids (MLSS), sludge-water phase boundary and sedimentation rate are highlighted. Research objectives: research on kinetics and parameters of activated sludge sedimentation at city wastewater treatment plants (WWTP). Materials and methods: field tests of sedimentation process of real sludge samples from different WWTP in laboratory cylinders are conducted, mathematical and graphical processing of the obtained results is carried out. Results: kinetics of sedimentation of sludge liquor with MLSS equal to 0.6…6.2 mg/l is described, main dependencies between sedimentation characteristics of activated sludge are obtained. The regularities of sedimentation of sludge with small and large MLSS are noted. Conclusions: kinetics of sludge sedimentation for various MLSS is determined, the rate of elimination of “sludge-water” phase boundary is determined.

DOI: 10.22227/1997-0935.2018.5.643-650

Download

Results 1 - 2 of 2