Vol 27, No 4 (2019)

Constructed wetlands (CW) - shallow surfaces or subsurface water bodies, planted with higher aquatic plants and designed to treat wastewater - have been actively used in world practice for the last decades. There are no universal principles for designing such systems, so for each combination of landscape (in which a CW is located) and the quality of wastewater, an individual type of CW is selected. The article provides an overview of the principles adopted in the world for calculating the main technological parameters of CWs (choice of the type of CW, calculation of the area of CW, the residence time of the water in the system, the choice of filtering medium, etc.) developed on the basis of numerous functioning objects. The recommendations given in the article are applicable for small and mediumsized CWs intended for the treatment of domestic, storm and agricultural wastewater.

Birds attracted to city’s waste landfills represent a significant hazard and additional inconvenience to people. It is necessary to understand not only the reasons for which birds enter the given territory, but also the economic components of the scaring process. The article analyzes the results of bird control management work at several waste management facilities. Based on these calculations, it’s possible to determine of costs level and select the optimal model for the work of specialists in bird scaring.

The article is devoted to the current state of the problem of ship waste management. The paper deals with the problem of anthropogenic impact on water bodies and adjacent territories resulting from shipping, ship repair and industrial production. The classification of hazardous impacts of ships on the environment in accordance with Russian and international regulations. The main methods of solving the problem of ship waste that are currently used are indicated, the main equipment of engineering environmental protection is classified. Comparative analysis of Russian regulatory documents (The Rules of Russian River Register) and international regulatory documents (MARPOL) was held. The conclusion was made about more stringent requirements for emissions of polluting substances on inland waterways. The definition of operational wastes from vessels was proposed. The general trend was shown for toughening of rules and regulations for handling and disposing of ship-generated waste.

This work is devoted to the analysis of the landscape structure of the coastal cliffs of the Black Sea coast of the Caucasus. The paper analyzes the features of vegetation growth and the landscape structure of the cliffs of the Tuaphat massif, proposes and substantiates the classification of landscapes of coastal cliffs, reveals the features of coastal landscapes. In the landscape structure of the coastal cliffs of the Tuaphat massif, natural boundaries can be distinguished by: the nature of the apparent occurrence of geological layers; substates by the steepness of the slope; striae, which are characterized by more abundant growth of vegetation along cracks in the geological layer; facies usually coincide geographically with nanoand microforms of the relief and are usually represented by one type of vegetation (for example, a pillow rock form). The distribution of vegetation by striae on fine crushed stone of siltstone or mudstone, the absence of halophytes, but the predominance of salt-tolerant plant species with a wide ecological amplitude (petrophytes, cosmopolitans and ruderal) are typical.

The paper estimates the impact of various factors on the oil pollution area for the purpose of solving the problems concerning forecasting during oil spills from the inland waterways vessels (on the example of the Middle Volga region). The following factors were considered: current velocity, air temperature, water temperature, volume and type of spilled oil product, wave height, river bank tortuosity, wind speed and wind direction, bank type, river width. A fractional two-level factorial plan of Box and Hunter has been developed aiming to test the significance of the studied factors. Mathematical modeling of a group of oil spill scenarios in the Middle Volga region has been carried out. It has been revealed that the volume of the spilled oil product, the wave height and the river bank tortuosity impact the oil patch area to a large extent. Based on the results obtained, the authors suggest the order for ranking factors into four groups according to the degree of impact on the oil patch area, depending on the specified effect quantity: extremely significant, especially significant, highly significant and moderately significant. The research results have been applied in the working out of more than 30 object plans for the prevention and elimination of oil spills of organizations engaged in oil transportation and handling, vessel bunkering in the Middle Volga region, as well as the plan for oil spill prevention and elimination in the Volga basin of inland waterways.