Pilot-Scale Studies of Wastewater Treatment in Systems with Airlift Bioreactors
V. S. Rozhkov
Donbas National Academy of Civil Engineering and Architecture
Annotation: The article presents a description and results of pilot-scale studies of biological wastewater treatment from biogenic elements and organic substances in schemes with airlift bioreactors. The substantiation of the main parameters of the operation of such systems was carried out by evaluating the convergence of experimental data with theoretical estimate indicators of the quality of biological treatment obtained using the ASM + Bio-P activated sludge model. Characteristic biochemical profiles of treatment schemes using airlift bioreactors, created on the basis of the Johannesburg and Cape Town processes for improved biological removal of phosphorus, are presented. It has been established that in aerotanks-clarifiers with a flooded airlift aeration system, there is no release of phosphorus during secondary sludge separation, while the efficiency of sludge separation in a fluid bed is at the level of similar gravity sedimentation facilities. Confirmed participation of the clarification zone in biological treatment and the conduction of improved biological phosphorus removal at the level of biological nitri-denitrification with biological removal of phosphorus, which corresponds to the requirements of the Best Available Technologies at lower operating costs than known technologies due to less recirculation and air consumption.
Keywords: biological treatment, airlift bioreactor, improved biological phosphorus removal.
Pages: 145-155.
Link for citation: Rozhkov, V. S. Pilot-Scale Studies of Wastewater Treatment in Systems with Airlift Bioreactors. – Text : electronic. – In: Modern Industrial and Civil Construction. – 2022. – Vol. 18, N 4. – Р. 145-155. – URL: https://donnasa.ru/publish_house/journals/spgs/2022-4/st_02_rozhkov.pdf (date of access: 19.09.2024). (in Russian)
Vol. 18, N 4 (2022)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture