Effective microorganism water treatment method for rapid eutrophic reservoir restoration

Abstract

Since reservoirs perform many important functions, they are exposed to various types of unfavorable phenomena, e.g., eutrophication which leads to a rapid growth of algae (blooms) that degrade water quality. One of the solutions to combat phytoplankton blooms are effective microorganisms (EM). The study aims to evaluate the potential of EM in improving the water quality of the Turawa reservoir on the Mała Panew River in Poland. It is one of the first studies providing insights into the effectiveness of using EM in the bioremediation of water in a eutrophic reservoir. Samples for the study were collected in 2019–2021. The analysis showed that EM could be one of the most effective methods for cleaning water from unfavorable microorganisms (HBN22, HBN36, CBN, FCBN, FEN) — after the application of EM, a reduction in their concentration was observed (from 46.44 to 58.38% on average). The duration of their effect ranged from 17.6 to 34.1 days. The application of EM improved the trophic status of the Turawa reservoir, expressed by the Carlson index, by 7.78%. As shown in the literature review, the use of other methods of water purification (e.g., constructed wetlands, floating beds, or intermittent aeration) leads to an increase in the effectiveness and a prolongation of the duration of the EM action. The findings of the study might serve as a guide for the restoration of eutrophic reservoirs by supporting sustainable management of water resources. Nevertheless, further research should be conducted on the effectiveness of EM and their application in the remediation of eutrophic water reservoirs.

Effect of Soil Biostimulant Application on Protein and Carbohydrate Content in Per-ennial Ryegrass (Lolium Perenne L.)

“…A direction that will be more widely developed in further research is the application of biostimulants in carbon farming and their wider use to improve plant health and enrich soil microbiology under conditions of plant cultivation in long-term cereal monocultures. A future direction of research is also the possibility of using biostimulants in organic farms and in the reclamation of degraded soils in addition to the elimination of water contamination by chemical and microbiological pollutants [37,38]. Also, a future direction will be the use of such microbiological preparations in animal husbandry as factors improving the sanitary conditions of animals and accelerating the fermentation of manure, and seaweed extracts as feed additives improving animal health [39,40].…”

Sustainability in Aquatic Ecosystem Restoration: Combining Classical and Remote Sensing Methods for Effective Water Quality Management

“…These organisms produce enzymes involved in the decomposition of organic matter and compounds that are most often a breeding ground for lactic acid bacteria and actinomycetes (Actinomycetes). Additionally, microelements present in biopreparations serve as a stimulating factor for decomposition processes, enhancing the efficiency of metabolism and the rapid growth of autochthonous organisms present in the aquatic environment [6,[9][10][11][21][22][23].…”

“…Moreover, the efficacy of EMs may vary based on the specific conditions of the lake and its surrounding ecosystem, necessitating a thorough assessment and consultation with experts before using this technique [8]. Overall, the application of effective microorganisms in lake restoration may be an effective and sustainable approach to improving water quality and restoring the ecological balance of aquatic ecosystems [8][9][10][11].…”