FIELD: water purification.
SUBSTANCE: in order to realise method of removal of ammonia and ammonium nitrogen, into water which is to be purified and which has been subjected to water treatment and deamination, formalin at pH 9-11 is introduced with weight ratio ammonia: formaldehyde 1:12.4. Formed products of condensation of ammonia with formalin are removed by means of coagulation by mixture of aluminium oxychloride with Praestol flocculant and by coagulation in electrolyser with soluble iron electrodes.
EFFECT: ensures reduction of technological operations aimed at purification of water from ammonia and ammonium nitrogen, simplification and increase of process economical efficiency.
1 tbl, 7 ex
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