Improvement of Biological Processes of Inland Municipal Wastewater Treatment Plant.

• Main Author: Li, Wen
• Format: Others
• Language: English
• Published: KTH, Mark- och vattenteknik 2016
• Subjects: Municipal wastewater treatment; Activated sludge treatment; Intermittent aeration
• Online Access: http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-190742

This master thesis gives an account for various aeration schemes that are utilized in conventional activated sludge treatment process in a wastewater treatment plant. By altering between different aeration schemes, the project aimed at reducing energy consumption along with maintaining the treatment performance at the plant. A series of experiments on the treatment performance over several different aeration schemes thus has been conducted on site at Solviken in Mora, Sweden. The project is basically a case study where no parameters were manually controlled except for the aeration schemes at the plant. Energy consumption reduction is logically relative to the ratio between aeration and non-aeration intervals. Several criteria were tested in regards to the treatment performance, including pH value, organic matters, phosphorus substances and microorganisms. The study has come up with a superior aeration scheme for the plant, as well as indicated processes that can be improved at the plant.