The removal effects of As(Ⅲ) and As(Ⅴ) from water by humic acid-activated carbon adsorption process were studied. The used activated carbon was regenerated by microwave irradiation. 5 g of activated carbon was used to treat 100 mL As(Ⅲ) solution with 100 mg/L of mass concentration and 100 mL As(Ⅴ) solution with 50 mg/L of mass concentration respectively. After the regenerated activated carbon has been reused for 4 times, the adsorption capacities for As( Ⅲ) and As( Ⅴ) are still up to 1.22 mg/g and 0.38 mg/g, respectively. Under the condition of humic acid dosage 0.17 mg/L, the adsorption capacities for As(Ⅲ) and As(Ⅴ) are increased by 10.75% and 4.35% respectively. The evaluation results of the toxicity characteristic leaching procedure show that the immobilization rates of As(Ⅲ) and As(Ⅴ) on the activated carbon are increased by 14.6%-32.4% after microwave irradiation and 6.9%-23.3% in present of humic acid.%考察了腐殖酸-活性炭吸附技术对水中As(Ⅲ)和As(Ⅴ)的去除效果,采用微波辐照对吸附了As(Ⅲ)和As(Ⅴ)的活性炭进行再生.用5 g活性炭分别处理100 mL质量浓度为100 mg/L的As(Ⅲ)溶液和质量浓度为50 mg/L的As(Ⅴ)溶液,经微波辐照再生后的活性炭重复使用4次时,As(Ⅲ)和As(Ⅴ)的吸附量仍分别高达1.22 mg/g和0.38 mg/g.在腐殖酸加入量为0.17 mg/L的条件下,可分别将活性炭对As(Ⅲ)和As(Ⅴ)的吸附量提高10.75％和4.35％.毒性浸出程序评价结果表明,As(Ⅲ)和As(Ⅴ)在活性炭上的固定率在微波辐照后提高了14.6％～32.4％,腐殖酸存在时提高了6.9％～23.3％.
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