The invention discloses a method for continuously treating heavy
metal liquid. The method comprises the following steps: firstly, pre-treating the heavy
metal liquid to enable the heavy
metal liquid to meet the water inlet requirements of equipment; secondly,
processing the heavy metal liquid by using a continuous adsorption process, namely continuously operating a plurality of process areas in sequence through the rotation of adsorption columns; finally, after-treating the
wastewater of each process area, and separating and recycling heavy metal. According to the method, multi-adsorption column and multi-process
continuous operation is carried out, and fully-
automatic control, simple operation and stable running are realized; the treatment process flow can be flexibly changed, and the method is applied to process change caused by external fluctuation; the operation flow speed is high, the regeneration cycle period is short, and metal ions in a
water body are efficiently adsorbed, separated, enriched and recycled; in addition, compared with a conventional
fixed bed process, the method has the advantages that the filling quantity of adsorption materials, the consumption of washing water, the consumption of a
desorption agent and the consumption of a regeneration agent are reduced, and the operation cost is reduced.