CAJ | 학술논문

采用沉淀-离子交换联合工艺处理氰化提金废水，重点考察了CuSO4·5H2 O用量及沉淀时间对各种离子沉淀率的影响，以及树脂的用量及吸附时间对各种离子综合去除率的影响。试验结果表明，当取CuSO4·5H2 O理论用量的1．5倍、沉淀时间为60 min时，CN -、Fe、Zn离子沉淀率均可达到93％以上，而 Cu 离子沉淀率为50％左右。 XRD 分析表明，沉淀物主要由Zn2[Fe（CN）6]、Cu2[Fe（CN）6]、CuCN及Zn（OH）2组成。吸附试验表明，当201×7树脂用量为5 mL、废水体积为100 mL、常温吸附75 min时，氰化提金废水中CN-及Cu、Fe、Zn离子的综合去除率分别可达到99．94％、71．23％、100％和99．95％，处理后废水中游离氰及铁、锌质量浓度达到了《GB 8978-1996污水综合排放标准》一级排放指标。
채용침정-리자교환연합공예처리청화제금폐수，중점고찰료CuSO4·5H2 O용량급침정시간대각충리자침정솔적영향，이급수지적용량급흡부시간대각충리자종합거제솔적영향。시험결과표명，당취CuSO4·5H2 O이론용량적1．5배、침정시간위60 min시，CN -、Fe、Zn리자침정솔균가체도93％이상，이 Cu 리자침정솔위50％좌우。 XRD 분석표명，침정물주요유Zn2[Fe（CN）6]、Cu2[Fe（CN）6]、CuCN급Zn（OH）2조성。흡부시험표명，당201×7수지용량위5 mL、폐수체적위100 mL、상온흡부75 min시，청화제금폐수중CN-급Cu、Fe、Zn리자적종합거제솔분별가체도99．94％、71．23％、100％화99．95％，처리후폐수중유리청급철、자질량농도체도료《GB 8978-1996오수종합배방표준》일급배방지표。
The combination process of precipitation-ion exchange was used for disposing the cyanidation wastewater.The influence of dosage and time of CuSO 4 · 5H2 O,precipitation on the precipitation rate of each kind of ions were studied on focus ,as well as the influence of dosage of resin ,adsorption time on the comprehensive removal of each kind of ions .The results showed that the optimum conditions for the precipitation were determined as follows:the dosage of CuSO 4 · 5H2 O was 1.5 times the theoretical amount ,the precipitation time is 60 min.And with this,the pre-cipitation rate of CN -,Fe and Zn ions are more than 93 %,but that of Cu only reaches 50 %.XRD showed that the precipitates were composed of CuCN,Zn(OH)2,Zn2 [Fe(CN)6] and Cu2 [Fe(CN)6].Adsorption experiments showed that the comprehensive removal of the CN -and Cu, Fe, Zn ions in waste water can respectively reach 99 .94 %、71 .23 %、100 %and 99 .95 %with the usage of 201 ×7 resin 5 mL cyanide-wastewater volume 100 mL and precipitation time 75 min under normal temperature .Thanks to the treatment ,mass concentration of CN -and Cu, Fe,Zn ions in waste water are controlled under the level national first class standard of industrial waste water emis -sion.