Achieving optimal results in water treatment with Polyaluminium Chloride (PAC) depends not only on selecting the right product but also on precise dosing. Incorrect dosing can lead to inefficient treatment, wasted chemicals, or even adverse effects on water quality. NINGBO INNO PHARMCHEM CO.,LTD. provides essential guidance on PAC dosing to ensure maximum effectiveness.

The primary goal of PAC dosing is to introduce the precise amount of coagulant needed to effectively neutralize the charge of suspended and colloidal particles in water. While general guidelines exist, the optimal dosage rate is highly dependent on several factors, including the characteristics of the raw water source. These characteristics include turbidity levels, pH, temperature, alkalinity, and the presence of dissolved organic matter.

A crucial aspect of PAC dosing is its relationship with pH. PAC itself is acidic, and its effectiveness is often optimized within a specific pH range. For most water treatment applications, this optimal range is typically between 5.0 and 7.6. If the raw water's pH is outside this range, adjustments may be necessary before or during PAC addition to ensure efficient flocculation. Understanding these polyaluminium chloride flocculant properties is key to successful implementation.

Dosing rate is often expressed in terms of dosage per volume of water treated. For instance, a common starting point for PAC dosing in potable water treatment might be around 0.1 ml per cubic meter of circulation flow, although this can vary significantly. It is essential to conduct jar tests or pilot studies to determine the specific dosage required for a particular water source. These tests help identify the point of minimum coagulant usage while achieving the desired water quality.

The injection point for PAC is also critical. To allow sufficient time for coagulation and flocculation to occur before the water reaches filtration or settling stages, PAC should ideally be injected as far upstream as possible in the process flow. However, it should be added after the point where water samples are taken for chemical controllers to ensure accurate readings. Proper mixing is also paramount; PAC needs to be dispersed evenly throughout the water flow to interact effectively with contaminants.

The type of dosing equipment also plays a role. Peristaltic pumps are often recommended for PAC due to their ability to deliver small, precise volumes continuously, which is crucial for maintaining optimal treatment levels without over-dosing. Using the best PAC for water from a reliable manufacturer like NINGBO INNO PHARMCHEM CO.,LTD. ensures product consistency, which in turn supports predictable dosing outcomes.

In summary, effective PAC dosing involves careful consideration of water characteristics, pH levels, appropriate dosage rates determined through testing, and strategic injection points. By adhering to these principles, water treatment facilities can maximize the benefits of polyaluminium chloride water treatment, leading to cleaner water and more efficient operations.