Praksa biološke faze čiščenja mlekarske odpadne vode za zaščito habitata Proteus anguinus
DOI:
https://doi.org/10.55707/eb.v12i2.150Ključne besede:
Proteus anguinus, odpadne vode , mlekarska industrija, biološko čiščenje , SlovenijaPovzetek
Slovenija je ena redkih držav, kjer živi človeška ribica (Proteus anguinus), katere habitat se večinoma nahaja na območju Nature 2000. V tem okolju deluje tudi mlekarna Krepko, ki mora skladno z zakonodajo odpadno vodo pred izpustom očistiti. Zaradi občutljivosti vrste P. anguinus ima čistilna naprava mlekarne tri faze čiščenja: primarno, sekundarno in terciarno. Ključna je sekundarna, biološka faza, ki poteka v sekvenčnem šaržnem reaktorju z aktivnim blatom in omogoča odstranjevanje amoniaka ter nitrata. Za izboljšanje učinkovitosti denitrifikacije pri nizkih temperaturah se dodaja železov klorid kot hranilo za mikroorganizme. Kakovost obdelave se ocenjuje glede na prisotnost amoniaka, usedanje biomase ter vrednosti kemijske porabe kisika in dušika. Rezultati kažejo, da dodajanje železovega klorida spodbuja rast mikroorganizmov, pospešuje denitrifikacijo in izboljšuje parametre kakovosti vode, kar pozitivno vpliva na varstvo habitata vrste P. anguinus.
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