PROSPECTS FOR EXPANDING THE RAW MATERIALS FOR THE PRODUCTION OF MODERN CONSTRUCTION COMPOSITES

В работе приводятся возможности расширения сырьевой базы для получения качественных и прочных строительных композитов. Приводится понятие о ресурсном цикле, основанном на природном круговороте веществ (ПКВ) и обеспечивающем безотходный замкнутый цикл производства композитов. Обозначена актуальность и перспективность перехода на энерго- и ресурсосберегающие технологии безотходного производства. The paper presents the possibilities of expanding the raw material base to obtain high-quality and durable building composites. The concept of a resource cycle based on the natural cycle of substances (PCR) and providing a waste-free closed cycle for the production of composites is given. The relevance and prospects of the transition to energy- and resource-saving technologies of waste-free production are indicated.

Expansion of the Fuel and Energy Balance Structure in Russia through the Development of a Closed-Loop Recycling

The goal of the study is to propose the basis for the concept of expanding the fuel balance in Russia through the development of a closed-loop resource cycle. We propose to use the criterion of energy potential of waste to generate new data on the resource base of the fuel and energy complex at the regional level. In order to form a reliable source for replenishment of the resource potential of the fuel and energy complex through waste recovery, the basic principles of data collection are proposed and the methodology for determining the energy potential at the city level is demonstrated using municipal solid waste (MSW) in 11 Russian cities as an example. The results of the evaluation have shown that due to energy recycling, MSW can cover from 2.11% to 6.01% of the heat demand of the territory under consideration. In the study, we propose to supplement the maximum involvement of waste in the fuel and energy balance (FEB) in Russia with the criterion of optimization of the energy balance at all levels and to distinguish a separate column “energy potential of waste” in the balance structure. This approach fundamentally changes the structure of the balance and gives the grounds for revision of plans for production and transportation of traditional energy resources.

SORBENT (GRANULATED ACTIVATED CARBON) REACTIVATION IN DUALMEDIA RAPID FILTERS TO OPTIMIZE THE QUALITY OF DRINKING WATER

Introduction. Water supply organizations are currently in need of innovative solutions and technologies based on the concept of the closed-loop resource cycle. The need for sustainable use of resources serves as the basis for changing the existing approach where worn-out resources are considered wastes. Materials and methods. In this paper, we show that it is expedient to restore the sorption properties of granulated activated carbon (GAC) by its reactivation and reuse in closed-loop recycling. We also present methods to study GAC properties and technology of reactivation. Results and discussion. Based on the results of the GAC samples’ analysis, it was found that, during reactivation, the mass content of each fraction changes with a strongly pronounced decrease in the content of large granules with a size of 1.18–2.00 mm and an increase in the content of small granules with a size of 0.60–1.00 mm. Besides, the apparent density of the sorption material changes and the volume of carbon that underwent two reactivations falls below 75%. Conclusion. GAC reactivation in dual-media rapid filters allows us to optimize not only the operating and financial expenses of the company but also those natural resources that would have been spent for the production of new carbon.

The mining resource cycle and settlement demography in Malå, Northern Sweden

Research on the demographic impacts of mining in sparsely populated areas has focused primarily on relatively large towns. Less attention has been paid to smaller villages, which may experience different impacts because of their highly concentrated economies and their small populations, making them more vulnerable to demographic “boom and bust” effects. This paper examines demographic change in four small villages in northern Sweden, which are located close to several mining projects but have evolved through different degrees of integration with or separation from mining. Using a longitudinal “resource cycle” perspective, the demographic trajectories of the villages are compared to understand how different types of settlement and engagement with mining have led to different demographic outcomes in the long term. While the four villages experienced similar trajectories in terms of overall population growth and decline, their experiences in relation to more nuanced indicators, including age and gender distributions and population mobilities, were different, and potential reasons for this are discussed. Due to data limitations, however, the long-term demographic consequences of mining for local Sami people remain unclear. The paper problematises this research gap in light of general concerns about mining impacts on traditional Sami livelihoods.

Uncertainty under Climate Change: the Resource Cycle of Industry in Taiwan’s Offshore Islands

The annual rainfall in Taiwan is actually 2.6 times than the average number in the world. There are as many as 2,500 mm of rainfall per year, but because of the geographical and climatic conditions,which leads to the fact that even if the rainfall is abundant in Taiwan, the water consumption of the people living in the island area is really far below the global average. A large part of the rainfall follows violent rain caused by the deterioration of the environment. The delay of the rainy season and the increase of the intensity of the typhoon have caused to suffer from flooding every year in Taiwan.This study takes “WIND LION PLAZA “ as the object. How do private enterprises “Kinmen” in the offshore islands where resources are more scarce implement “water saving measures and resource reuse” promoted by the government? In addition, it also includes the purpose and expectation of the implementation of this policy by the enterprise. Furthermore, how to implement the resource cycle and the management level between the government and the enterprise is to achieve sustainable development of resources, and do corporate social responsibility to achieve sustainable development of resources.