NINGBO INNO PHARMCHEM CO.,LTD. is committed to empowering industries with knowledge to maximize the efficiency of their water treatment processes. This guide focuses on Polyaluminium Chloride (PAC) dosing, a critical aspect for achieving optimal purification and cost-effectiveness.

Polyaluminium Chloride (PAC) is a powerful coagulant widely used in water treatment due to its superior performance. However, its effectiveness is highly dependent on correct dosing. Improper PAC dosing in water treatment can lead to under-treatment or over-treatment, both of which compromise water quality and increase costs. Understanding the principles of effective PAC dosing is essential for any industrial facility relying on this chemical.

The optimal dosage of PAC is not a one-size-fits-all parameter; it varies significantly based on several factors, including the characteristics of the raw water, such as pH, temperature, turbidity, and the types and concentrations of contaminants present. Therefore, jar testing is a fundamental step in determining the precise PAC dosage required for a specific water source. This empirical process involves testing different concentrations of PAC on small water samples to identify the dosage that produces the largest, fastest-settling flocs with the clearest supernatant.

When performing jar tests, consider the following: Start with a range of dosages, often from 10 mg/L to 100 mg/L for typical industrial water treatment, though this can vary. Monitor the rate of floc formation, the size and density of the flocs, and the clarity of the water after settling or a short period of agitation. The goal is to find the minimum dosage that achieves the desired water quality. Overdosing can lead to re-stabilization of particles, reduced flocculation efficiency, and potential issues with downstream processes, including an increase in residual aluminum.

Once the optimal dosage is determined through jar testing, it's important to implement a consistent and accurate dosing strategy. This typically involves using calibrated dosing pumps to inject the diluted PAC solution into the water stream. The point of PAC injection is also crucial; it should be introduced just before or at the point where rapid mixing occurs, to ensure thorough dispersion and reaction with the contaminants. Following injection, a period of rapid mixing is necessary to distribute the PAC throughout the water, followed by a slower mixing phase to encourage floc growth (this is where the 'flocculation' in polyaluminium chloride flocculant comes into play).

NINGBO INNO PHARMCHEM CO.,LTD. offers high-quality polyaluminium chloride in various grades suitable for different industrial applications. We provide guidance and support to help our clients determine the most effective PAC dosing strategies for their unique water treatment challenges. Investing in precise PAC dosing not only optimizes the purification process but also ensures cost-effectiveness by preventing chemical wastage.

By carefully managing PAC dosing in water treatment, industries can achieve superior water quality, reduce operational expenses, and meet environmental compliance targets. Contact NINGBO INNO PHARMCHEM CO.,LTD. to learn more about our polyaluminium chloride products and expert advice on optimizing your water treatment dosing.