Method for removing arsenic and antimony in water body by using active base metal replacement

[0018] Take 200mL As(III) content is 3.6gL -1 , Sb(III) content is 5.8gL -1 The silver slag leaching solution was placed in the reactor, the pH of the solution was adjusted to 0 with hydrochloric acid, 10g of iron powder (60 mesh) and 0.5g of ammonium citrate were added, the stirring speed was 400r / min, the reaction temperature was 40°C, and the replacement time was 10~120min.

[0019] Replacement efficiency was used to evaluate the replacement and removal effect of iron powder on arsenic and antimony in water.

[0020] Table 1 Experimental results of different replacement times

[0021] time / min

[0023] Take 200mL As(III) content is 3.6gL -1 , Sb(III) content is 5.8gL -1 The silver slag leaching solution is placed in the reactor, the pH of the solution is adjusted to 0 with hydrochloric acid, 10g of zinc powder (200 mesh) and 0.5g of ammonium citrate are added, the stirring speed is 400r / min, the reaction temperature is 40°C, and the replacement time is 10~120min.

[0024] Replacement efficiency was used to evaluate the replacement and removal effect of zinc powder on arsenic and antimony in water.

[0025] Table 2 Experimental results of different replacement times

[0026] time / min

[0027] 120

[0029] Take 200mL As(III) content is 8.2gL -1 , Sb(III) content is 13.8gL -1 The silver slag leaching solution is placed in the reactor, the pH of the solution is adjusted to 0 with hydrochloric acid, 10g of zinc powder (400 mesh) and 0.5g of ammonium citrate are added, the stirring speed is 400r / min, the reaction temperature is 40°C, and the replacement time is 10~120min.

[0030] Replacement efficiency was used to evaluate the replacement and removal effect of copper powder on arsenic and antimony in water.

[0031] Table 3 Experimental results of different replacement times

[0032] time / min