Description

Activated Carbon– GAC Pool Filter Media & Adsorbent

Product Data

Attribute	Verified Information
Product Name	Activated Carbon
Chemical Category	Filter Media / Adsorbent
Active Ingredient	Activated Carbon (C — highly porous activated form)
Chemical Formula	C (activated porous form)
Alternative Names	Activated Charcoal; Carbon Media; GAC (Granular Activated Carbon); PAC (Powdered Activated Carbon); Active Carbon
Primary Purpose	Adsorption of organic compounds, chloramines, odours, colour, and certain micropollutants from pool or water treatment systems through filtration.
Typical Usage	Filtration support in carbon filter vessels; inline carbon filters; water pre-treatment before reverse osmosis; de-chlorination of fill water; treatment of heavily chemically dosed water

Activated Carbon – Granular Activated Carbon (GAC) Filter Media

Product Overview

Activated Carbon is a highly porous form of carbon used as a filtration media and adsorbent in swimming pool and water treatment systems. It is produced by heating carbonaceous materials such as coconut shell, coal, or wood in a steam or CO₂ atmosphere, creating an extremely porous structure with a very high surface area (typically 500–1,200 m²/g).

Granular Activated Carbon (GAC) is the most commonly used form in swimming pool filtration. Its microporous structure allows it to adsorb a wide range of contaminants from water through physical adsorption — organic molecules and certain inorganic species bind to the carbon surface by Van der Waals forces.

Activated Carbon is not a standard day-to-day pool treatment chemical. It is a filtration medium primarily used in dedicated carbon filter vessels or for specific treatment scenarios such as de-chlorination and organic compound removal.

How It Works

Activated Carbon removes contaminants from water through a process called adsorption. Contaminant molecules are attracted to and held on the surface of the carbon particles.

The adsorption process involves:

• Physical adsorption – Organic molecules and certain inorganic species bind to the carbon surface by Van der Waals forces
• Surface area – The enormous surface area (500–1,200 m²/g) provides countless binding sites for contaminants
• Microporous structure – Tiny pores trap contaminants, removing them from the water stream
• Chlorine removal – Activated carbon effectively removes free chlorine and chloramines from water
• Organic compound removal – Adsorbs volatile organic compounds (VOCs), disinfection by-products, and other organic contaminants

The removal of chloramines is a purely chemical-catalytic reaction on the carbon surface. Both free and combined chlorine removal efficiencies decrease over time as the carbon becomes saturated.

Why It Matters

• Chlorine smell and odour complaintsare common in swimming pools. Activated Carbon removes the chloramines responsible for these odours, significantly improving the swimming environment.
• Chemical taste in watercan deter swimmers and affect the pool experience. Activated Carbon removes taste and odour compounds, providing more pleasant water.
• Disinfection by-productssuch as trihalomethanes (THMs) and haloacetic acids (HAAs) are formed when chlorine reacts with organic matter introduced by bathers. Activated Carbon adsorbs these potentially harmful compounds.
• Chloramine reductionis essential for swimmer comfort. Chloramines cause eye and skin irritation and the characteristic “chlorine smell.” Activated Carbon effectively reduces chloramine levels.
• Organic contaminationfrom bathers, cosmetics, and environmental sources increases chlorine demand. Removing organics with activated carbon reduces chlorine consumption.
• Cyanuric acid managementis a growing concern. Research has shown that granular activated carbon can achieve up to 28.4% reduction in cyanuric acid in a single filtration. This offers an alternative to draining and refilling pools with over-stabilised water.

Key Benefits

1. Excellent Broad-Spectrum Adsorbent for Organic Compounds
   Activated Carbon effectively removes a wide range of organic contaminants, including VOCs, disinfection by-products, and chlorinated compounds.
2. Removes Taste, Odour, and Colour
   Activated Carbon eliminates unpleasant tastes, odours, and discolouration from pool water.
3. Reduces Chlorine and Chloramine Levels
   Activated Carbon effectively removes free chlorine and chloramines, improving water quality and swimmer comfort.
4. No Chemical Additions to Water
   Adsorption is a physical process that does not introduce chemicals into the water, making it safe and environmentally friendly.
5. Reusable (Can Be Regenerated)
   Some activated carbons can be thermally regenerated in industrial settings, extending their service life.
6. Effective Against Disinfection By-Products
   Activated Carbon removes THMs, HAAs, and other disinfection by-products, improving water safety.

Problem-Solution Table

Problem	Likely Cause	How Activated Carbon Helps	Expected Outcome
Chlorine smell/odour complaints	Chloramines in pool water	Adsorbs chloramines and organic compounds	Odour-free water
Chemical taste in water	Disinfection by-products	Removes taste-causing compounds	Improved taste
Eye and skin irritation	Chloramines and DBPs	Reduces chloramine and DBP levels	Swimmer comfort
Organic contamination	Bathers introducing organics	Adsorbs organic compounds	Reduced chlorine demand
High cyanuric acid levels	Over-stabilisation	GAC can remove up to 28.4% CYA	Reduced CYA without dilution
Disinfection by-products	Chlorine reacting with organics	Adsorbs THMs, HAAs and other DBPs	Safer swimming water

Dosage & Application Guidance

Dosage requirements vary depending on manufacturer specifications, filter design, flow rate, contaminant load, water chemistry, and treatment objectives. Always follow product label instructions and professional engineering specifications.

Based on the reference guide and industry guidance:

• As filter media: Load into dedicated carbon filter vessel per manufacturer specification
• Bed depth: Minimum 600 mm; recommended 1000 mm for organic removal
• Service flow rate: 3–9 m/hr for organic removal; 7–15 m/hr for chlorine removal
• Powdered Activated Carbon (PAC) treatment: 5–20 g/m³ for acute organic contamination treatment, then filter out

Important: Activated Carbon removes free chlorine — supplement chlorination after carbon treatment. Do not use in active pool filter media where residual chlorine must be maintained.

Water Balance Reference Table

The values below represent general swimming pool industry guidance and are not specifications of the product described on this page. Actual operating targets may vary depending on local regulations, pool type, water source, equipment design, and operating objectives.

Parameter	Recommended Range	Notes
Free Chlorine	1.0–3.0 mg/L	Activated Carbon removes chlorine — dose after carbon treatment
Combined Chlorine	< 0.5 mg/L	Activated Carbon helps reduce chloramines
pH	7.2–7.6	Carbon does not affect pH
Cyanuric Acid	30–50 mg/L	GAC can help reduce high CYA levels

Step-by-Step Application Guide

As Filter Media (GAC): 

Before Installation:

1. Determine filter vessel size and required carbon volume
2. Select appropriate GAC grade (8×30 mesh is common)
3. Ensure minimum bed depth of 600 mm
4. Gather required PPE: dust mask, gloves, goggles

During Installation:

1. Rinse GAC thoroughly to remove fine particles and dust
2. Load carbon into filter vessel according to manufacturer specifications
3. Backwash to settle the media bed and remove remaining fines
4. Commission the filter by running water through it until effluent is clear

Operation:

1. Monitor pressure differential across the carbon bed
2. Backwash regularly according to manufacturer recommendations
3. Test effluent for chlorine, organic compounds, and other target contaminants
4. Replace or regenerate carbon when adsorption capacity is exhausted

As Batch Treatment (PAC):

1. Calculate required PAC dosage based on water volume and contamination level
2. Add PAC to pool water with pump running
3. Allow contact time for adsorption
4. Remove PAC by filtration (sand filter or dedicated carbon filter)

Usage Guide for Kenya & East Africa Region

• Chlorine Smell in Hotel Pools
  Many hotels and resorts in Kenya experience complaints about chlorine smell. Activated Carbon filtration effectively removes chloramines, improving guest satisfaction.
• High Organic Load
  Kenya’s warm climate and high tourist numbers mean high bather loads, introducing significant organic matter. Activated Carbon removes these organics, reducing chlorine demand.
• Cyanuric Acid Build-Up
  Many pools in Kenya use stabilised chlorine products (TCCA), leading to CYA accumulation. GAC filtration offers a solution for reducing high CYA levels without draining the pool.
• Water Scarcity
  In regions where water is scarce, draining and refilling pools to reduce CYA or other contaminants is problematic. GAC offers a water-saving alternative.
• Coastal Pools
  Coastal areas experience salt spray and organic contamination. Activated Carbon pre-treatment protects downstream equipment and improves water quality.

Commercial Applications

• Hotels, Resorts & Safari Lodges
  Carbon filtration removes chloramines and organic compounds, improving guest comfort and reducing chlorine demand. Particularly valuable for pools with high bather loads.
• Waterparks
  Large water volumes and high organic loads benefit from carbon filtration to reduce chlorine consumption and improve water quality.
• Competition Pools & Public Pools
  Carbon filtration helps meet regulatory requirements for disinfection by-product reduction.
• Water Treatment Plants
  Activated Carbon is widely used in municipal water treatment for removing organic contaminants and disinfection by-products.

Residential Applications

• Advanced Filtration Setups
  Homeowners with advanced filtration systems may use GAC for organic removal and water polishing.
• Fill Water Treatment
  Activated Carbon can be used to pre-treat fill water, removing chlorine and organic contaminants before they enter the pool.

Safety & Handling

Storage Conditions

• Store in a dry location
• Keep away from strong oxidisers — can ignite under certain conditions
• Prevent moisture absorption which reduces performance
• Shelf life: Indefinite when stored dry (performance depends on adsorptive capacity)

Personal Protective Equipment (PPE)

• Dust mask when handling powdered form
• Gloves and goggles standard practice

Mixing Precautions

• DO NOT store near strong oxidisers or chlorine compounds – risk of ignition
• Avoid inhalation of fine dust (PAC)

Spill Response

• Sweep up dry product
• Avoid creating dust
• Can cause slip hazard if spilled

First Aid

• Inhalation: Move to fresh air
• Skin contact: Wash with soap and water
• Eye contact: Rinse with water
• Ingestion: Rinse mouth; seek medical attention

Important Safety Disclaimer

The safety information contained here is provided for general reference purposes only. Always refer to the official Safety Data Sheet (SDS) and Technical Data Sheet (TDS) provided by the product manufacturer before handling any chemical. Local health, safety, and environmental regulations must be observed at all times. The dosage guidance provided is indicative only — always test pool water and adjust dosages based on actual test results.

Product Comparison

Feature	Activated Carbon (GAC)	Sand Filter Media
Primary Mechanism	Adsorption	Physical filtration
Removes	Organics, chlorine, chloramines, odours	Particles and sediments
Surface Area	500–1,200 m²/g	Minimal
Backwashing	Required	Required
Regeneration	Thermal regeneration possible	Not applicable

Cross-Selling Recommendations

• Chlorine 65% (Calcium Hypochlorite)
  If using carbon filtration for de-chlorination, supplement chlorine after carbon treatment to maintain disinfection residual.
• Stabiliser (Cyanuric Acid)
  For high CYA levels, GAC can help reduce CYA. Monitor CYA levels and adjust stabiliser dosing accordingly.
• Flocculant
  For heavily contaminated water, use flocculant to remove suspended particles before carbon filtration to extend carbon life.

FAQs- Activated Carbon

1. What is Activated Carbon used for in swimming pools?
   Activated Carbon is a filtration media used to adsorb organic compounds, chloramines, odours, and disinfection by-products from pool water.
2. How does Activated Carbon work?
   Activated Carbon works through physical adsorption — contaminants bind to the enormous surface area of the carbon particles, removing them from the water.
3. Does Activated Carbon remove chlorine?
   Activated Carbon effectively removes free chlorine and chloramines from water. Do not use in active pool filtration where chlorine residual must be maintained.
4. Can Activated Carbon remove cyanuric acid?
   Research shows that granular activated carbon can achieve up to 28.4% reduction in cyanuric acid in a single filtration.
5. How long does Activated Carbon last?
   Activated Carbon performance depends on adsorptive capacity. When saturated, it must be replaced or regenerated. Service life varies with contaminant load and flow rate.
6. Is Activated Carbon suitable for all pools?
   Activated Carbon is not a standard day-to-day pool treatment. It is primarily used in dedicated carbon filter vessels for specific treatment scenarios.
7. Can I add Activated Carbon directly to my pool?
   Powdered Activated Carbon (PAC) can be added for batch treatment, then filtered out. Do not add granular carbon directly to pool water.

Summary / Conclusion

Activated Carbon is a highly porous filtration media used to adsorb organic compounds, chloramines, odours, and disinfection by-products from pool water. It is produced from carbonaceous materials such as coconut shell, coal, or wood, creating an extremely porous structure with very high surface area (500–1,200 m²/g). Granular Activated Carbon (GAC) is the most commonly used form in swimming pool filtration. Activated Carbon is not a standard day-to-day pool treatment chemical — it is primarily used in dedicated carbon filter vessels for specific treatment scenarios such as de-chlorination and organic compound removal. It must not be added directly to active pool water intended to maintain a chlorine residual, as it will rapidly consume free chlorine. Suitable for commercial and advanced residential filtration systems.

Need Activated Carbon for your pool or facility?

Vinsol Kenya is your trusted supplier of swimming pool chemicals and water treatment solutions across Kenya and East Africa. Whether you manage a hotel pool, school facility, waterpark, or residential pool, we have the products and technical expertise to keep your water crystal clear and safe.

Contact us today for bulk orders, commercial supply contracts, or expert technical advice.

• 📞 Call/WhatsApp: +254 715 01 45 10
• 📧 Email: inquiries@vinsol.co.ke | info@vinsol.co.ke
• 📍 Ruiru Branch: Next to Total Petrol Station – Kihunguro, Ruiru
• 📍 Eldoret Branch: Rehema Complex, opposite Japara Ltd., along Oloo Street, Eldoret
• 🕐 Working Hours: Mon – Sat 8:30AM – 5PM

 

References:

1. Publisher Source: World Health Organization (WHO)
   Article Title: Guidelines for Safe Recreational Water Environments, Vol. 2: Swimming Pools and Similar Environments
   URL: https://www.who.int/publications/i/item/9241546808
   Access Date: August 4, 2026
2. Publisher Source: Centers for Disease Control and Prevention (CDC)
   Article Title: Healthy Swimming: Pool Chemical Safety
   URL: https://www.cdc.gov/healthywater/swimming/
   Access Date: August 4, 2026
3. Publisher Source: Pool Water Treatment Advisory Group (PWTAG)
   Article Title: Swimming Pool Water: Treatment and Quality Standards for Pools and Spas
   URL: https://www.pwtag.org/standards/
   Access Date: August 4, 2026
4. Publisher Source: University of Bristol, School of Chemistry
   Article Title: Swimming Pool Water – Deozonation
   URL: https://www.chm.bris.ac.uk/~paulmay/webprojects2001/morgan/deozonation.htm
   Access Date: August 4, 2026
5. Publisher Source: Davis & Shirtliff
   Article Title: Dayliff Water Treatment Media
   URL: https://www.uganda.davisandshirtliff.com/products-and-solutions/product/dayliff-water-treatment-media
   Access Date: August 4, 2026
6. Publisher Source: Universidad Santiago de Cali
   Article Title: Desarrollo de un filtro de carbón activado para la eliminación de ácido cianúrico, subproducto de la desinfección del agua de piscinas
   URL: https://repositorio.usc.edu.co/items/7e043520-34e1-4ed4-80d1-72d18e9c8757
   Access Date: August 4, 2026
7. Publisher Source: Watch Water® Germany
   Article Title: ACTIVESORB 200 – Product Information
   URL: https://watchwater.com/activesorb-200/
   Access Date: August 4, 2026