CAJ | 학술논문

以城市污水处理厂产生的污泥为原料，对其进行焚烧得到污泥焚烧灰。在对污泥焚烧灰进行表征的基础上，研究了利用污泥焚烧灰对水中 Cd 2＋的吸附。结果表明，吸附效率随吸附时间、污泥焚烧灰投加量和初始 pH 的增加而增加；而温度的影响不明显。在吸附时间为80 min，污泥焚烧灰投加量为10 g/L，初始 pH 为5～7，温度为30℃的最佳工艺条件下，当 Cd 2＋浓度低于10 mg/L，污泥焚烧灰对水中 Cd 2＋的去除率可达99％以上。废水中的 Cu 2＋会对 Cd 2＋的吸附产生抑制作用，而 Cr 6＋影响微弱。污泥焚烧灰对 Cd 2＋的吸附过程符合 Langmuir 吸附等温式，吸附过程主要是物理吸附，吸附量可达17．94 mg/g。
이성시오수처리엄산생적오니위원료，대기진행분소득도오니분소회。재대오니분소회진행표정적기출상，연구료이용오니분소회대수중 Cd 2＋적흡부。결과표명，흡부효솔수흡부시간、오니분소회투가량화초시 pH 적증가이증가；이온도적영향불명현。재흡부시간위80 min，오니분소회투가량위10 g/L，초시 pH 위5～7，온도위30℃적최가공예조건하，당 Cd 2＋농도저우10 mg/L，오니분소회대수중 Cd 2＋적거제솔가체99％이상。폐수중적 Cu 2＋회대 Cd 2＋적흡부산생억제작용，이 Cr 6＋영향미약。오니분소회대 Cd 2＋적흡부과정부합 Langmuir 흡부등온식，흡부과정주요시물리흡부，흡부량가체17．94 mg/g。
The sludge incineration ashes were obtained by burning the sludge from urban sewage treatment plant. Based on the characterization of sludge incineration ashes, their adsorption of Cd 2 + from water was studied.The results showed that the adsorption efficiency increased with the adsorption time, the amount of sludge incineration ash, and the initial pH, while the temperature had little effect.Under the optimal conditions of the adsorption time of 80 min, the sludge incineration ash amount of 10 g/L, the initial pH of 5-7 and the temperature of 30 ℃, the removal efficiency could reach more than 99% when the concentration of Cd 2 + was below 10 mg/L.The Cu 2 + in water had inhibition on the adsorption of Cd 2 +, while the Cr 6 + had little effect.The adsorption process obeyed the Langmuir isotherm model and the physical adsorption was the main mechanism and the adsorption amount could reach 17.94 mg/g.