Abstract
The development and application of advanced water purification technology is crucial to guarantee a sufficient supply of clean water. However, conventional water purification technology consumes large amounts of coagulants, with the formation of intractable sludge. Herein, the applicability of high-speed air flotation technology for the purification of actual water sources was evaluated in Tianjin Binhai New Area. During a three-year survey, the raw water exhibited periodic pollution characteristics with algae cells as the main removal targets in all seasons. The raw water had both low temperatures and low turbidity in winter, another obstacle for water treatment. Based on the scientific analysis of the water’s quality, the water purification process was comprehensively optimized via regulating the dosage of agents and operating parameters and using high-speed air flotation equipment. The results showed that a dissolved air pressure of 0.40 MPa, reflux ratio of 8%, and SUEZ-1# dissolved air release head combined with pre-chlorination with PACl plus FeCl3 (PACl/FeCl3 ratio = 2:1) were suitable for attaining a good purification performance. High turbidity removal rates (80.9–86.2%) and algae cell removal rates (92.5–98.1%) were obtained even in the high algae period of summer and low turbidity period in the winter, proving the superior stability and applicability of the high-speed air flotation system.
Subject
Filtration and Separation,Analytical Chemistry
Reference47 articles.
1. Removal of phenol and 4-nitrophenol from wastewater using a composite prepared from clay and Cocos nucifera shell: Kinetic, equilibrium and thermodynamic studies;Adebayo;Resour. Environ. Sustain.,2021
2. Accounting for interactions between Sustainable Development Goals is essential for water pollution control in China;Wang;Nat. Commun.,2022
3. Analysis of water–energy nexus and trends in support of the sustainable development goals: A study using longitudinal water–energy use data;Ke;J. Clean. Prod.,2022
4. The physicochemical and microbiological quality assessment of Maddhapara hard rock-mine discharged water in Dinajpur, Bangladesh;Yasmin;Resour. Environ. Sustain.,2022
5. Eutrophication will increase during the 21st century as a result of precipitation changes;Sinha;Science,2017
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