某重金属废水处理厂改造工程设计及实验
Design and Experiment of Modification Project of a Heavy Metal Wastewater Treat-ment Plant
摘要: 湖南某园区周边遗留的尾矿库汇集大量重金属废水，不满足现有重金属废水处理厂进水水质要求，需要增设一套预处理设施。该预处理设施采用芬顿氧化 + 重金属捕集处理工艺对尾矿重金属废水进行预处理，并进行了实验验证和工程应用。试验结果表明：芬顿氧化 + 重金属捕集工艺可实现对尾矿重金属废水的预处理，CODcr的去除率为60%~70%，镉的去除率可达99%，出水满足重金属废水处理厂进水标准。
Abstract:
A large amount of heavy metal wastewater is collected from the remaining tailings ponds around an industrial park in Hunan, which cannot meet the inlet water quality requirements of the existing heavy metal wastewater treatment plant, and a set of pretreatment facilities is needed. In this pre-treatment facility, Fenton oxidation + heavy metal trapping treatment process was used to pretreat the heavy metal wastewater from tailings, and the experimental verification and engineering ap-plication were carried out. The test results show that the process of Fenton oxidation + heavy metal capture can realize the pretreatment of heavy metal tailings wastewater, the removal rate of CODCr is 60%~70%, the removal rate of Cd is up to 99%, and the effluent meets the inlet standard of heavy metal wastewater treatment plant.
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