Open AccessSludge pits of biological treatment plants and their reclamation
Author(s) -
S Yu Teplykh,
M A Gridneva,
E V Dremina
Publication year - 2022
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/1010/1/012131
Subject(s) - land reclamation , waste management , environmental science , dewatering , sewage sludge treatment , environmental engineering , pulp and paper industry , sewage treatment , engineering , ecology , geotechnical engineering , biology
The paper describes different methods of sludge pits reclamation and biological methods of their purification. It shows that sludge pits purification becomes possible due to sludge dewatering and its membrane composting. Membrane composting at the moment helps solve different problems. The main danger lies in the fact that sludge pits pose a potential threat to water bodies pollution and are also a source of pathogenic microbiological pollution, as well as a source of unpleasant smells and harmful gases (methane, hydrogen sulfide, mercaptan, carbon dioxide, etc.). Excessive pressure, semi-permeable membrane shells and optimization of oxygen content are able to minimize this harmful effect. As a result of these procedures, silt and sludge turn into technical soil with a humidity of 40-50%, which can be used as a backfill. It is often used to restore recreational areas and to set out various plants as well. Due to its high content of phosphorus and nitrogen sludge is a very good fertilizer.