Tertiary wastewater treatment using bioreactors-clarifiers

Abstract

The use of technical oxygen instead of air in biological treatment plants can increase their oxidizing ability. Bioreactor-clarifier is a new technical device for tertiary wastewater treatment with the use of oxygen. The design, operation principle and research results of the bioreactor-clarifier for tertiary treatment of urban wastewater are given The use of bioreactors-clarifiers for tertiary treatment of urban wastewater using dissolved technical oxygen allows intensifying the process of biochemical oxidation of organic substances in a contact weighed load and increasing the efficiency of wastewater treatment by BOD and other components.

Organizational and technological solutions of multicriteria quality analysis in high-rise construction

“…Obviously, the most important factor influencing the choice of organizational and technical solutions (OTS) is the constraint factor. This is "... the conditions of the existing urban development, suggesting the presence of spatial obstacles on the construction site and the adjacent territory, the restriction on the width, length, height and depth of the working area and underground space, the location of construction machinery and vehicles, the increased degree of construction, Ecological, material risk and, accordingly, enhanced security measures for those working in the construction industry and the living population " [7].…”

“…The purpose of the study was to identify the specifics of organizational and technological solutions for renovating urban areas in constrained conditions. Attempts to address this problem were made more than 10 years ago [7], but at that time they did not find understanding in the administrativecommand layer of the Moscow leadership. Today, the implementation of this task is one of the most important socio-economic and strategic goals of the city-planning policy of the Moscow government.…”