Flocculation and sedimentation involves adding an aqueous solution of an inorganic flocculant (such as aluminum sulfate) and an organic anionic flocculant, polyacrylamide (PAM), to wastewater. This causes compression of the electrical double layer, destabilizing suspended particles in the wastewater. The particles aggregate, increasing in size and forming flocs. Once the flocs reach a certain size, they detach from the aqueous phase and settle under gravity, thus removing a large amount of suspended solids from the wastewater and achieving water treatment. To improve separation efficiency, coagulant aids can be added appropriately and at appropriate times. The treated wastewater generally meets discharge standards in terms of color, chromium content, and suspended solids content, and can be discharged or used as reinjection water in artificial water injection for oil recovery.
Flocculants are currently the most widely used agents in wastewater treatment, and the flocculation process is an indispensable key step in wastewater treatment technology. Based on their chemical composition, flocculants can be classified into: inorganic salt flocculants, organic polymer flocculants, and microbial flocculants. Users can choose the appropriate type based on the properties of their wastewater. The combination of flocculants and wastewater treatment equipment enhances wastewater treatment effectiveness, effectively solving wastewater treatment problems.
The application of flocculants in wastewater treatment effectively increases the wastewater treatment rate, resulting in significant treatment effects. Currently, this agent is widely used in wastewater treatment across various industries, ensuring that the water quality after treatment by large-scale wastewater treatment equipment meets national discharge standards, effectively preventing the deterioration of water pollution and ensuring sustainable ecological development.
Adding organic polymeric flocculants to treat oil refining wastewater allows for the rapid and thorough separation of water from impurities.
