Energy-saving technology of cleaning water basin and enrichment with algae raw materials for biogas productionAnastasiya Mylayeva, Nadezhda Kuznetzova, Tatiana Shchukina and Dmitriy DrapalyukE3S Web Conf., 164 (2020) 01032DOI: https://doi.org/10.1051/e3sconf/202016401032