By the basic technical solutions GOST 70953-2023 is a new tool for improving the quality of wastewater treatment facilities projects

Summary

The problems that arise while designing wastewater treatment facilities are described. The goals and objectives are given of developing GOST 70953-2023 «Wastewater treatment facilities. Construction and reconstruction. Basic technical solutions. Requirements for the development, structure and content in order to ensure the optimal capital costs and operational performance», that will come into force in 2024. The fundamentals of the concept of this standard, its basic definitions, and advantages in relation to the practice of designing wastewater treatment facilities that prevailed prior to the standardization are outlined. A brief summary of the main sections of GOST is given, in particular, the requirements for the composition of the main technical solutions, the report on their development and the approvals package.

Key words

designing , sewerage treatment facilities , municipal wastewater , State Standard (GOST) , basic technical solutions , optional feasibility studies , standardization

bbk 000000

UDC 628.315.2

Shuvalov M. V., Tarakanov D. I.

The history of the Samara wastewater treatment facilities project
designed by engineer V. G. Lindlei

Summary

«Drainage of Samara» project was designed by engineer V. G. Lindlei in 1907. Technical and process solutions approved in the project were at that time most advanced. Domestic, industrial wastewater and surface runoff was treated at «designated» facilities that included grit chambers and «moving screens» with a bar spacing of 5 mm. The removal of captured pollutants was completely automated. Extraction of other pollutants was supposed to execute at the «treatment facilities». For this purpose covered horizontal settling tanks with hydraulic sludge removal systems were designed. Biological wastewater treatment was to be carried out in oxidation basins (total surface area about 16 hectare) filled with feed. For wastewater transportation collectors of piriform 1400×1750 mm cross section were planned for construction. According to literary resources at those times wastewater treatment facilities were only in four cities; at that in Odessa, Kiev and Moscow they were represented by sewage fields, and the only treatment facilities with biofilters were built in Tsarskoe Selo.

Key words

biological treatment , sewerage treatment facilities , municipal wastewater , biofilters , sewage fields

bbk 000000

UDC 349.6:504.05.628.3

Danilovich Dmitrii

Scientific and practical principles of regulating technogenic pollutants in municipal wastewater

Summary

The results of statistical processing actual data evidence the lack of linear relationship between technogenic pollutant concentrations at the input of the municipal wastewater treatment facilities and effluent after biological treatment. It proves the lack of the principles of the technical approach used to regulate the customers before 2013 and confirms the fact that the permissible pollution discharge limits shall be set exclusively on the assumption of preventing any negative impact on the public wastewater disposal systems. Permissible pollution concentration limits have been developed and proposed for introduction into the Rules of cold water supply and wastewater disposal.

Key words

treatment facilities , municipal wastewater , industrial wastewater , technogenic pollutants , permissible concentration limit for effluent discharge into the public sewer

DOI 10.35776/MNP.2019.10.06
UDC 628.355

Kevbrina M. V., Akmentina A. V., Dorofeev A. G., Agarev Anton, Aseyeva V. G., KOZLOV M. N., Nikolaev Yu. A.

Advanced technology of municipal wastewater treatment
with granular sludge

Summary

Increasing the specific biochemical capacity of the facilities using the so-called granular activated sludge is one of the promising areas for the development of biological wastewater treatment technologies. Granular sludge is microbial biocenosis specializing in the decomposition and mineralization of substances present in wastewater. The main distinction from regular sludge is due to two important factors: the composition of the basic structural unit of granular sludge – granules, and a high sedimentation rate (up to 20 m/h). This provides for developing sludge doses of up to 10 g/l in bioreactors of wastewater treatment. The results of the development of the first biotechnology in Russia for municipal wastewater treatment of using granular activated sludge are presented. The technology has been implemented at the facilities of Mosvodokanal JSC. The technology of aerobic biological treatment in a sequencing batch reactor with sequential nitri-denitrification and an upward flow of wastewater provides for the quality of effluent that meets the standards for maximum permissible concentrations for discharge into fishery bodies. Technical and economic comparison of the developed technology with the technology of removing nutrients in flow-through aeration tank showed that the life cycle costs of the facilities with partially granulated activated sludge are 1.4 times less than the costs of traditional biological treatment technology (for a capacity of 1000 m³/day).

Key words

biological treatment , granulated activated sludge , municipal wastewater , nutrients removal , SBR-reactor

Скачать/download (PDF) free access

bbk 000000

UDC 628.2/.3

Shuvalov M. V.

System analysis of the evolution of designing sanitation systems for communities (to be discussed)

Summary

To get a whole picture of the evolution of wastewater disposal technologies for settlements and to study the conditionality of their development subject to the influence of specific demands of socio-historical practice, as well as to predict and plan further improvement of technologies, the sanitation system of a settlement should be considered as a set of interrelated components – suit of technologies: wastewater collection, disposal (or transportation); wastewater and sludge treatment, utilization of wastewater components, landfilling wastewater components (including effluent discharge into water bodies). The topological model of the structure of a sanitation system of a settlement is displayed using a graph. In the proposed graph model five vertices (components of the sanitation system structure) and numerous arcs (connection of components) are taken. The proposed topological model provides for analyzing a sanitation system of a real settlement and modeling to solve optimization problems and determine possible trends of its development.

Key words

municipal wastewater , domestic (household-fecal) wastewater , concepts of wastewater disposal and decontamination , public and decentralized sanitation scheme , system analysis of the suit of technologies: wastewater collection, disposal and treatment, wastewater components utilization and landfilling , topological model of a sanitation system of a settlement

FaLang translation system by Faboba