FIELD: waste water treatment.
SUBSTANCE: invention relates to a method of industrial waste water treatment from heavy metal ions. Waste water is treated by sorption on a solid sorbent. Sorbent used is foam concrete of average density D400 with grain size of sorbent from 3.0 to 5.0 mm, modified with potassium hexacyanoferrate, with the following ratio of components, wt%: said foam concrete D400 – 97.0–99.0; potassium hexacyanoferrate, K4[Fe(CN)6] – 1.0–3.0.
EFFECT: technical result consists in improvement of cleaning degree and increase of filtration speed.
1 cl, 1 tbl
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