E3S Web Conf.
Volume 247, 2021International Conference on Efficient Production and Processing (ICEPP-2021)
|Number of page(s)||7|
|Published online||05 April 2021|
Influence of hydraulic and organic load on the anaerobic-aerobic dairy wastewater treatment characteristics
1 Kazan National Research Technological University, K. Marks St. 68, Kazan, 420015, Russian Federation
2 Viet Tri University of Industry, Tien Kien, Lam Thao, Phu Tho, Viet Nam
3 Research Institute for Problems of Ecology and Mineral Wealth Use of Tatarstan Academy of Sciences, Daurskaya St. 28, Kazan, 420087, Russian Federation
* Corresponding author: email@example.com
The performance of the anaerobic-aerobic sequencing labscale reactors for the treatment of a milk processing wastewater was studied. The wastewater flow rate was varied from 78.0 to 149.0 ml•h-1 and organic matter content from 3.8 to 6.8 g COD∙dm-3. This corresponded to the change of dilution rate from 0.4 to 0.8 day-1 and organic loading rate from 1.4 to 2.8 g COD•dm-3•day-1. An increase of hydraulic load reduced the treatment efficiency at the first anaerobic stage from 44.4 to 29.7%, but it was compensated at the aerobic treatment stage. Increasing the organic loading rate improved the treatment efficiency at the anaerobic stage from 44.4 to 54.2%. It was shown that spatial separation of anaerobic stage onto two phases increases the treatment efficiency in anaerobic stage and in whole (85.8 and 98.7%) in comparison to non-separation mode (45.5 and 73.9%, respectively). The correlation analysis of the organic loading rate L, organic consumption rate P and dilution rate D on the treatment efficiency E allowed to obtain the equations can be used for mathematical optimization of the process.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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