DOI 000000
UDC 628.218:628.334.6
Yermolin Yu. A.
On the calculation of the capacity of intermediate storage tanks
in storm sewer networks (further to the discussion)
Summary
Within the framework of the announced discussion («Calculation method for determining the capacity of intermediate storage tanks in storm sewer networks», article by G. Gudkov, published in No. 6 of the journal for 2020), the results of one particular case of developing a method of approximate calculation of the capacity of an intermediate storage tank in a storm sewer were critically «analyz» and «accuracy» criteria. It is noted that in some cases, with a high degree of uncertainty of the initial data, these criteria may contradict each other. It is concluded that the approximation of rain hydrographs by more simple functions of time, convenient for subsequent analysis, is acceptable without any significant loss of accuracy. On this basis, an expression was obtained for calculating the capacity of an intermediate storage tank in storm sewer networks. The compact formula is more convenient for engineering calculations than the one presented in the above-mentioned article.
Key words
surface runoff , mathematical model , calculation error , intermediate storage tank , rain hydrograph , approximation
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DOI 10.35776/MNP.2020.06.02
UDC 628.2/.4:006.3:349.6
Vereshchagina Lidiia
On the need for revising the Code of Practice CP 32.13330.2018 «Sewerage. Pipelines and wastewater treatment plants» regarding the design of systems for the disposal and treatment of surface runoff from settlements
Summary
The regulatory framework for the design of systems for the disposal and treatment of surface runoff from the territory of settlements and industrial sites is discussed, in particular, the practice of applying the Code of Practice CP 32.13330.2018 «Sewerage. Pipelines and wastewater treatment plants. SNiP 2.04.03-85», enforced by the order of the RF Ministry of Construction of June 26, 2019. Structural changes of the regulatory document are considered, as well as the most common problems that design organizations and the state authorities of project expertise have to face while applying separate provisions in designing engineering structures for disposal and treatment of surface runoff from settlements. A list of the main paragraphs of CP 32.13330.2018 that require revision with the respective comments is presented.
Key words
treatment facilities , surface runoff , storm sewer , hydraulic calculation of networks , separation chamber , intermediate storage tank
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DOI 10.35776/VST.2022.05.01
UDC 628.2/.4:006.3:349.6
Vereshchagina Lidiia, Danilovich Dmitrii, Frog Dmitrii
Overview of the main amendments to the Code of Practice CP 32.13330.2018 «Sewerage. Pipelines and wastewater treatment plants» in terms of designing the systems for the disposal and treatment of surface runoff introduced in 2021
Summary
An overview of the main changes in the design of the systems for the disposal and treatment of surface runoff (rain, melt water) in the current set of rules – CP 32.13330.2018 «SNiP 2.04.03-85 Sewerage. Pipelines and wastewater treatment plants», developed in 2021 by the specialists of the Research Institute of Building Physics of the Russian Academy of Architecture and Building Sciences and a number of other organizations is presented. It is noted that the purpose of amending the current regulatory document is, in particular, harmonization of its provisions with the articles of the environmental legislation that came into force on January 1, 2019 and the new regulatory legal acts of the Government of the Russian Federation that provide for the transition to the principles of technological regulation of discharges in accordance with the technological indicators of the best available technologies. An overview of the most significant changes in CP 32.13330.2018 on the organization and calculation of the systems for the disposal and treatment of surface runoff is given.
Key words
treatment facilities , best available techniques , discharge limitations , surface runoff , technological indicators , storm sewer , hydraulic calculation of networks , separation chamber , intermediate storage tank , climatic parameters , rainfall intensity
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DOI 10.35776/MNP.2020.06.06
UDC 628.218::628.334.6
Gudkov Aleksandr
Calculation method for determining the capacity of intermediate storage tanks in storm sewer networks (for discussion)
Summary
Целью работы является дополнение и уточнение методик, приведенных в действующей нормативно-методической базе, для инженерного расчета схем регулирования расходов в сетях дождевого водоотведения. Методом математического моделирования с применением системы компьютерной алгебры проанализированы три схемы регулирования, включающие емкости, насосы и разделительные камеры. Предложена универсальная расчетная формула определения объема регулирующего резервуара в схеме регулирования с опорожнением емкости насосами для всех типов разделительных камер. Установлены зависимости и приведены графики, показывающие влияние на величину объема резервуара коэффициента, который учитывает непостоянство расхода, отводимого разделительной камерой в коллектор. Для схемы регулирования без насоса и разделительной камеры подобрана степенная аппроксимирующая функция, позволяющая проводить расчет величины объема с приемлемой точностью, без численного интегрирования. Для двух схем регулирования с опорожнением самотеком предложены новые формулы определения объема регулирующего резервуара в широких диапазонах коэффициентов регулирования и параметров дождей. Приведены уточненные таблицы, упрощающие инженерные расчеты регулирующих резервуаров. Предложенные в работе формулы и таблицы позволяют рассчитывать емкость резервуаров для всех рекомендуемых схем регулирования расходов.
Key words
surface runoff , sewer , calculation method , separation chamber , intermediate storage tank , flow control
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