基于生物淋滤技术的市政污水与化工污泥重金属超标处置

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中图分类号：X703；TQ09 文献标志码：A文章编号：1001-5922（2026）03-0673-04

Disposal of excessive heavy metals in municipal sewage and chemical sludge based on bioleaching technology

YANG Yalu （China Railway Shanghai Engineering Group Municipal Environmental Protection Engineering Co.，Ltd.，Shanghai 20O436，China）

Abstract：Aiming at the problem of excessive heavy metals in the sludge of municipal sewage treatment plants receiving viscose industrial wastewater，a method of bioleaching combined with （quasi-）Fenton reaction was proposed to leach heavy metals from the sludge.In theexperiment，the conditions of the bioleaching stage and the（quasi-） Fenton reaction stage were optimized separately first，and then the heavy metal leaching efect was characterized. Theresults showed thatthe leaching efect of heavy metals fromthe sludge reached the highest when the inoculum size of Acidithiobacillus ferrooxidans was 10% and the dosage of ferrous sulfate was 8 g/L in the bioleaching stage， and the initial pH value was 2.0 and the dosage of hydrogen peroxide was 8 g/L in the （quasi-） Fenton reaction stage.Under these conditions，the leaching amounts of zinc and copper from the sludge in the sludge storage tank of the municipal sewage treatment plant were 58.7mg/L and 42.7mg/L ，respectively. This method can play a role in the disposal of heavy metals in the sludge of municipal sewage treatment plants.

Key words： municipal sewage treatmentplant;heavymetals；sludge treatment；biological filtration；adhesive wastewater

粘胶纤维生产作为粘胶工业的核心环节，在生产过程中，会使用到大量含有重金属的化学助剂，这就导致了其生产废水中含有大量的重金属离子。（剩余5199字）