Determining the amount of flocculant to be added is a process that needs to be experimented and adjusted in order to achieve the best flocculation effect, sedimentation rate and final effluent quality in the wastewater treatment process. Here are the general steps:
Flocculant. 1.Preliminary estimate: According to experience or recommendation of leading suppliers, combined with the characteristics of wastewater and treatment requirements (such as turbidity, suspended solids content, pH value, etc.), a dosing range can be preliminarily set.
2.Lab Try:
Prepare a sample of the sewage to be treated in a certain volume.
Tests are performed with a range of different doses of flocculants, such as different concentrations of flocculants in multiple beakers, and other conditions (e.g., stirring speed, time, temperature) are kept consistent.
The flocculation effect in each beaker was observed and recorded, including the floc size, sedimentation rate, and supernatant clarity.
3.Optimizations & Adjustments:
By comparing the results of each test, the amount of flocculant dosage with the best flocculation effect and reasonable cost was found.
The addition of coagulants may also need to be considered to further optimize the flocculation effect.
Taking into account the fluctuations in actual operation, it may also be necessary to leave some margin of safety for the optimal dosing or to set up an automatic control strategy to accommodate changes.
4.Field validation: Pilot or field trials are carried out in actual wastewater treatment facilities under the best conditions obtained in the laboratory to further verify and fine-tune the actual dosage of flocculant.
5.Continuous monitoring and feedback: In the actual operation stage, the water quality changes after treatment should be continuously monitored, and the amount of flocculant should be dynamically adjusted according to the actual situation to ensure long-term stable treatment effect.
In conclusion, the selection of the right flocculant type and the determination of its precise dosage are based on a combination of extensive test data and field experience.
Flocculant. 