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 |
|
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%
