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ORIGINAL RESEARCH
Experimental Study on the Optimization of an
Integrated Treatment Process for Micro-polluted
Surface Water by Response Surface Methodology
1
Environmental Engineering Design and Research Institute, China Railway Siyuan Survey and Design Group Co., Ltd,
Wuhan 430063, China
Submission date: 2024-04-23
Final revision date: 2024-08-29
Acceptance date: 2024-09-04
Online publication date: 2024-11-07
Publication date: 2025-11-04
Corresponding author
Lei Qi
Environmental Engineering Design and Research Institute, China Railway Siyuan Survey and Design Group Co., Ltd, Wuhan 430063, China
Environmental Engineering Design and Research Institute, China Railway Siyuan Survey and Design Group Co., Ltd, Wuhan 430063, China
Pol. J. Environ. Stud. 2025;34(6):6741-6750
KEYWORDS
TOPICS
ABSTRACT
In order to optimize the integrated treatment process of “air flotation/bio-ceramic/membrane”
for the treatment of micro-polluted surface water, the effect of air flotation time, filtration rate,
and membrane permeation rate on the removal of chlorophyll a and permanganate index (CODMn) were
investigated by the response surface method (RSM), and the experimental factors were optimized by
a quadratic regression equation and response surface. Quadratic regression equations and response
surfaces optimized the experimental factors. The results showed that the air flotation time was
positively correlated with the removal efficiency of chlorophyll a and CODMn. The effect of filtration rate
on the removal of CODMn was more significant than that of chlorophyll a, and the impact of membrane
permeation rate on the removal efficiency of both pollutants was not substantial. In the validation tests
conducted when air flotation time was 30 min, the filtration rate was 3 m/h, the membrane permeation
rate was 35 L/(m2·h), the total average removal efficiency of chlorophyll a was 94.15±3.38%, and the total
average removal efficiency of CODMn was 72.17±2.58%, which were in good agreement with the model
predictions.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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