APPLICATION OF ALUMINIUM CHLORIDE (PAC) IN AQUACULTURE ENVIRONMENT

By Basic Chemistry 06/02/2025 News

Poly Aluminum Chloride (PAC) is an effective coagulant solution, widely used for water treatment in many fields, especially aquaculture. With the ability to quickly remove suspended impurities, organic matter and harmful microorganisms, PAC helps maintain stable water quality, creating ideal conditions for the growth of shrimp, fish and other aquatic species. Proper use of PAC not only improves productivity but also contributes to environmental protection and reduces operating costs.

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General Characteristics of PAC

Name: Poly Aluminum Chloride (PAC)
Chemical formula: [Al₂(OH)nCl₆₋n]m
Color: Light yellow, lemon yellow (for powder form) or golden brown (for liquid form).
Status: Powder or liquid form, depending on the intended use.
Aluminum content: 10%, 17% (liquid) or 28–31% (powder).
Pack: 25kg (powder), 30kg, 250kg, 500kg, 1000kg (liquid), or as required.
Origin: Vietnam, China, India.

PAC chemical is a versatile coagulant, helping to settle suspended substances, remove bacteria, viruses and organic impurities in water. With diverse forms and contents, PAC meets the needs of water supply, wastewater treatment and applications in aquaculture environments. This is the top choice to maintain a clean and stable water environment, contributing to improving productivity and product quality in many industries.

Applications of PAC in Aquatic Environment

Aluminum Chloride (PAC) chemicals are widely used to ensure water quality in aquaculture ponds, helping to improve productivity and minimize disease risks.

Remove Impurities and Improve Water Quality

PAC helps remove colloidal compounds, suspended substances, bacteria and viruses from pond water.
Increase water clarity, improve light absorption, create an ideal environment for aquatic species to grow.

Maintain pH Stability

PAC works best at pH from 6.5 to 8.5, helping to maintain a stable environment, limiting sudden changes in pH - the cause of stress for shrimp and fish.
Removes heavy metal ions, helping to reduce water toxicity to aquatic products.

Pond Management Support

PAC increases the efficiency of pond bottom sludge settling, reducing dredging and sludge treatment costs.
Prevent the growth of harmful bacteria, limit pathogens in the pond.

Advantages of Using PAC in Aquaculture

High pH stability: Easy to adjust pH during treatment, saving chemicals and accompanying equipment.
Low dosage: Cost saving, creating large flocs and easy to settle.
Reduce sludge volume: Less sludge than other coagulants, easier to manage.
Non-corrosive to equipment: Compatible with modern water treatment systems.
Improve water quality: Extends the filtration cycle, improves the quality of water after filtration.

Nhược Điểm Cần Lưu Ý

PAC is powerful at low doses. If used in excess, the colloidal particles may dissolve, reducing treatment effectiveness.
It is necessary to determine the appropriate PAC content for each type of water through actual testing.

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Instructions for Using PAC in Aquaculture

Bartending

Mix liquid PAC into a 5-10% solution or powder PAC into a 10-20% solution before use.
Stir well to dissolve the chemical completely, ensuring optimal treatment efficiency.

Recommended Dosage

Pond water treatment:
- New or lightly polluted water: 1–4 g PAC/m³ water.
- Highly turbid water: 5–10 g PAC/m³ water.
Circulatory system treatment: 15–30 g PAC/m³ water, depending on the level of pollution.

Doing

Add the mixed PAC solution to the pond water or treatment system.
Use a water fan or stirrer to disperse the chemical evenly.
Let the water stand for 1-2 hours to let the sediment settle to the bottom.
Decant the sediment and check the quality of the water after treatment.

Notes When Using PAC in Aquaculture

Occupational Safety

Wear gloves, mask and goggles to avoid direct contact with chemicals.
Wash hands and exposed areas after handling.

Preserve

Store PAC in a cool, dry place, away from direct sunlight and high temperatures.
Close the packaging after use to prevent moisture from reducing the quality of the chemical.

Check Before Use

Measure turbidity, pH and water parameters before adding PAC to determine appropriate dosage.
Avoid overusing PAC, this may affect beneficial microorganisms in the pond.

Contact For Advice And Quote

Loc Thien Investment and Development Company Limited is proud to be a supplier of high quality PAC, suitable for the aquaculture industry. We are committed to providing effective products and dedicated services, helping customers improve productivity and ensure a clean water environment.

Using PAC chemicals in aquaculture not only helps improve water quality but also increases productivity and reduces risks. With outstanding advantages, PAC is the optimal solution for modern farms. Contact Loc Thien for advice and the most suitable products!