1. Core parameters of activated carbon for water purification
| Parameters | Standard requirements | Application value |
| Iodine adsorption value | ≥1000 mg/g | Remove small molecule organic matter (phenol, humic acid) |
| Carbon tetrachloride adsorption rate | ≥60% | Characterize the adsorption capacity of VOCs/pesticides |
| Methylene blue adsorption value | ≥150 mg/g | Key indicators of decolorization capacity (printing and dyeing wastewater) |
| Particle size | 8-30 mesh (columnar carbon) | Balance adsorption rate and pressure drop |
2. Typical application scenarios and cases 1. Deep purification of drinking water Case: A city water plant upgraded its process to treat slightly polluted water sources (raw water COD 5.8mg/L, ammonia nitrogen 1.2mg/L) Selection: coconut shell activated carbon (iodine value 1100mg/g, particle size 12-30 mesh) Parameters: filtration rate 12m/h, contact time 15 minutes Effect: effluent COD ≤ 2mg/L, odorous substance removal rate > 95%, ton water treatment cost increased by ￥0.08 2. Heavy metal adsorption of electroplating wastewater Case: A circuit board factory in Guangdong treats copper-containing wastewater (Cu²⁺ 50mg/L, Ni²⁺ 30mg/L) Selection: modified activated carbon (loaded with sulfide, specific surface area 900㎡/g) Parameters: dynamic adsorption column empty tower flow rate 2BV/h, pH=5.5 Effect: effluent Cu²⁺ < 0.5mg/L, adsorption capacity up to 180mg/g, annual savings of ￥1.2 million in hazardous waste disposal fees 3. Household water purifier filter Case: A certain brand of RO water purifier upgraded carbon filter (PP cotton + sintered carbon) Selection: extruded carbon rod (iodine value 950mg/g, pore size 0.5-5nm) Parameters: flux 2L/min, initial pressure drop <0.05MPa Effect: residual chlorine removal rate 99.9%, organic pollutant retention rate >90%, filter life extended to 6 months If you need more information, you can contact us at any time
