排序方式: 共有33条查询结果,搜索用时 15 毫秒
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国外化学镀镍老化液处理现状 总被引:4,自引:0,他引:4
介绍了国外目前应用的化学镀镍老化液处理方法,着重推荐了沉淀法、电解法、离于交换法和电渗析法 相似文献
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DSA类电极催化降解硝基苯及其动力学研究 总被引:9,自引:0,他引:9
用新兴的电化学催化系统,采用特殊工艺自制的DSA类电有作为阳极,对模拟硝基苯废水进行降解处理。结果表明,最佳试验条件为:电流密度15mA/cm^21、Na2So4浓度5g/L、pH以中性和碱性较好。在适合的条件下。硝基苯废水CODcr去除率可达到90%以上,DSA类电极能有效地催化降解硝基苯。对试验结果进行的非线性最小二乘法分析表明,硝基苯在电化学催化系统中的降解过程符合一级反应模型,在硝基苯质量浓度200mg/L、pH11.0、Na2SO4浓度10g/L、电流密度15mA/cm62的试验条件下,CODcr去除速度常数为0.0395min^-1。 相似文献
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应用电解退镀法退除金银复镀层,金镀层和镀层废件中金和银。结果表明,浓硫酸-脂肪醇体系中,最佳退镀条件为电解电压8V,脂肪醇添加量15g/LH2SO4,搅拌后退镀液呈紊流态,Re为2880。退镀后金主要存在于固相沉淀物中,其含量在93%以上,而银存在于固相沉淀物和溶液中,它在两相中的分配比依不同镀层种类而异。 相似文献
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Ke Xiao Jianping Deng Li Zeng Tao Guo Yan Gong Bo Yang Xu Zhao Huabo Duan 《环境科学学报(英文版)》2019,31(1):98-104
Electrolysis is a promising technology to improve sludge dewaterability efficiently with negligible environmental impact. To intensify the electrolytic efficiency, the effect of electrolytes (NaCl, Na2SO4, NaNO3, and NaClO4) on electrolysis pretreatment of municipal sludge and its mechanisms was investigated using Ti/PbO2 electrodes. The electrolytes, which enhanced the production of oxidative radicals, showed a significant synergetic effect in reducing the capillary suction time (CST) of sludge. NaCl was distinguished from the other electrolytes since it formed a large amount of active chlorine species, which oxidized the sludge cells to improve the sludge dewaterability. The surface morphologies as well as the soluble proteins and polysaccharides were analyzed to unravel the underlying mechanisms of sludge dewaterability. Additionally, an economic assessment showed that NaCl addition in the electrolysis pretreatment can be a suitable technique for enhancing municipal sludge dewaterability. 相似文献
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