Analysis of core parameters
| Parameters | Industry standards | Impact on water treatment |
| Iodine adsorption value | ≥800-1200 mg/g | Determines the removal rate of small molecular organic matter (pesticides, antibiotics) |
| Methylene blue adsorption value | ≥150-220 mg/g | Affects the decolorization ability of macromolecular substances such as pigments and humic acid |
| Carbon tetrachloride adsorption rate | ≥60-75% | Characterizes the adsorption efficiency of non-polar substances such as chloroform and benzene |
| Particle size | size 8-30 mesh (mainstream) | Balance adsorption efficiency and filter bed pressure drop (optimal flow rate 10-15m/h) |
| Ash content | ≤8% (drinking water grade ≤3%) | Avoid the risk of heavy metal (lead, arsenic) dissolution |
| pH value | 6.5-7.5 (neutral carbon) | Prevent changes in water pH and protect subsequent process equipment |
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II. Practical cases of three major water treatment scenarios Case 1: Deep purification of municipal drinking water Pain point: Raw water is polluted by agriculture (atrazine pesticide residue 0.1mg/L, chromaticity 30 TCU) Solutions we provide to customers: Activated carbon selection: coconut shell granular carbon (iodine value 1050mg/g, particle size 12-30 mesh) Process parameters: filtration rate 12m/h, contact time 15 minutes, carbon layer thickness 2.5m Results: Effluent atrazine <0.001mg/L (national standard limit 0.002mg/L), chromaticity reduced to 5 TCU The cost of treating a ton of water is only ￥0.06, which saves 40% compared with the ozone activated carbon combined process Case 2: Removal of heavy metals from electroplating wastewater Challenges: Wastewater containing copper (Cu²⁺ 50mg/L) and nickel (Ni²⁺ 30mg/L) meets the discharge standards We provide Solution made by the customer: Modified activated carbon: sulfide loading (specific surface area 900㎡/g, Cu²⁺ adsorption capacity 180mg/g) Dynamic adsorption column: empty tower flow rate 2BV/h, pH=5.5 Benefits: Heavy metals in effluent <0.1mg/L, saving ￥1.2 million in hazardous waste disposal fees annually After 5 times of activated carbon regeneration, adsorption capacity retention rate >85% Case 3: Upgrade of household water purifier filter element Requirement: Residual chlorine removal rate >99%, while extending filter element life Solution: Composite filter element: sintered carbon rod (iodine value 950mg/g) + ultrafiltration membrane Parameter optimization: flux 2L/min, initial pressure drop <0.05MPa Effect: Residual chlorine dropped from 1.0mg/L to undetectable, organic pollutant retention rate >90% Filter element life extended from 3 months to 6 months, replacement cost reduced by 50%
