oa Utilization and Post-Treatment of Domestic Wastewater in the Coastal Recreational Zone of Ukraine

This article examines wastewater treatment and disposal in Ukraine’s coastal recreational zones, which face increasing anthropogenic pressure and resource limitations. The study analyzes various treatment methods, including soil filtration and irrigation with perennial grasses, using a resort area in the Kherson region as an example.

Tourism and inefficient treatment facilities contribute to coastal water pollution, leading to eutrophication and ecosystem degradation. The research highlights the risks of using undiluted wastewater due to its high mineralization and biogenic content. Experimental studies show that diluting wastewater in a 1:2 ratio optimizes irrigation, reducing soil salinization risks. Soil filtration effectively decreases organic pollution, lowering biogenic element concentrations to acceptable levels for discharge into water bodies.

The study also evaluates wastewater irrigation’s impact on alfalfa, revealing a 10–20% yield increase. It also shows an increase in the number of cuts and improved feed quality. Treated and diluted wastewater does not cause nitrate accumulation, ensuring plant biological safety.

The proposed comprehensive approach, combining soil filtration, bioplateaus, and wastewater dilution, enhances water resource efficiency, prevents soil contamination, and optimizes water use in Ukraine’s coastal regions. This research provides valuable insights for sustainable water resource management and improving environmental safety in coastal areas.