📗 V rezul'tate povsemestno rasprostranennoy biologicheskoy ochistki munitsipal'nykh stochnykh vod vo vsem mire ezhegodno obrazuetsya milliony tonn zagryaznennykh tyazhelymi metallami ilovykh otkhodov. Oni predstavlyayut soboy sedimentatsionno ustoychivye kontsentrirovannye suspenzii, vklyuchayushchie biologicheskie kletki, ikh metabolity, veshchestva prirodnogo i tekhnogennogo proiskhozhdeniya, v tom chisle i soedineniya tyazhelykh metallov. Posle evakuatsii na ilovye polya, zanimayushchie obshirnye prigorodnye territorii, ilovye suspenzii prevrashchayutsya v gelepodobnye osadki. Utilizatsiya ilovykh otkhodov yavlyaetsya aktual'noy problemoy dlya vsego mirovogo soobshchestva. Blagodarya nalichiyu makro- i mikroelementov, poleznykh mikroorganizmov, vitaminov, aminokislot i organicheskogo veshchestva naibolee ratsional'nym yavlyaetsya ikh ispol'zovanie v kachestve udobreniya posle udaleniya tyazhelykh metallov. Sovremennye issledovaniya pokazyvayut,chto dannaya problema mozhet byt' reshena v protsesse vyshchelachivaniya s uchastiem ilovykh geterotrofnykh mikroorganizmov.