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针对本地水源研究了采用粉末活性炭(PAC)吸附去除水中1,4-二氯苯和1,2,4-三氯苯的可行性、吸附行为及应对能力。结果表明,PAC能有效去除水中1,4-二氯苯和1,2,4-三氯苯,吸附行为符合Frendlich方程。PAC投加量20mg/L,1,4-二氯苯和1,2,4-三氯苯浓度均为5倍标准限值时,PAC吸附60min和10min可分别将水源水1,4-二氯苯和1,2,4-三氯苯残余浓度控制在标准限值以下,去除率分别为84.6%和93.6%。当PAC最大投加量为80mg/L,吸附时间120min时,PAC能将水源水下浓度为5.26mg/L的1,4-二氯苯和2.73mg/L的1,2,4-三氯苯去除至标准限值以下,可应对浓度分别为标准限值的17.5倍和136.5倍。
Aimed at local water sources, the feasibility, adsorption behavior and coping ability of 1,4-dichlorobenzene and 1,2,4-trichlorobenzene in water were studied by using powdered activated carbon (PAC). The results show that PAC can effectively remove 1,4-dichlorobenzene and 1,2,4-trichlorobenzene in water, and the adsorption behavior accords with Frendlich equation. PAC dosage 20mg / L, 1,4-dichlorobenzene and 1,2,4-trichlorobenzene concentrations are five times the standard limit, PAC adsorption 60min and 10min respectively, the water source of 1,4-bis Residual concentrations of chlorobenzene and 1,2,4-trichlorobenzene were controlled below the standard limits with removal efficiencies of 84.6% and 93.6%, respectively. When the maximum dosage of PAC was 80mg / L and the adsorption time was 120min, PAC could treat 1,4-dichlorobenzene with a concentration of 5.26mg / L in water and 2.73mg / L with 1,2,4-trichloro Benzene was removed below the standard limit, the response concentrations were 17.5 times the standard limit and 136.5 times.