Investigation of Waste Properties of Subway Construction as a Potential Component of Soil Layer

Abstract

The construction of subway stations is inevitably accompanied by the formation of a large amount of waste that is extracted from the underground workings by rock. When the waste is transported, the air is polluted with the exhaust gases of the dump trucks, some of the waste can stay on the road surface, the use of dump trucks increases the load on the roadway, the disposal of waste at landfills harms the environment, and enterprises pay fees for the transportation as well as placement of the waste. The article deals with the waste from the construction of new stations in the Saint-Petersburg subway. In order to determine the possibility of using waste in the municipal economy, a comprehensive analysis of this waste was carried out, including determination of moisture content, acidity, total carbon content, as well as chemical and granulometric composition. On the basis of the study results, it was established that the waste in question belongs to the hazard class 5, which enables to use it as a component of the soil mixture. Afterwards, the hazard class 5 was confirmed by the method of bioassay based on the determination of water toxicity by changing the optical density of the Chlorella algae culture.

Development of Bioproductive Soil Mixtures Using Subway Construction Waste for The Purpose of Improving the Territory of The City

“…The carried-out researches allow to draw a conclusion about admissibility of use of a ground formed as a result of underground construction with a view of an accomplishment, it is confirmed by other research [12,[40][41].…”

Assessment and abatement of the eco-risk caused by mine spoils in the dry subtropical climate

“…The model of sustainable development of the mining industry requires the responsible land use and restoration of affected soils (Androkhanov et al, 2019;Cao, 2007;Danilov et al, 2017;Isakov & Barygina, 2017;Ivanov et al, 2018;Pashkevich & Petrova, 2016). In a wide sense, reclamation is a set of works aimed at restoring the productivity and economic value of disturbed lands, as well as improving environmental conditions in harmony with the benefits of society.…”

Analysis of biological methods for quarry wastewater treatment from nitrogen compounds

“…Микроводоросли широко используются при биотестировании отходов [Ivanov et al, 2018]. Многие российские исследователи и их коллеги из зарубежья предлагают производить очистку сточных вод от широкого спектра органических и неорганических загрязнителей [Mohsenpour et al, Применение микроводорослей для очистки сточных вод осуществляется и совместно с бактериями.…”