Ukurikije amakuru aherutse kugurishwa, umubare w'amakode yakiriwe na Liding Environmental Protection ku bikoresho bya AAO uracyari hejuru. Ni ibihe bintu bituma abakiriya bizera iyi gahunda kurushaho? Ibikurikiraho, Liding Environmental Protection izagaragaza ishingiro ry'iyi gahunda ya AAO.
Ishingiro ry'igikorwa cya AAO ni ugukoresha nitrification no denitration y'ibinyabuzima mu bihe bitandukanye kugira ngo hagerwe ku gukuraho azote, no gukoresha bagiteri zunganira fosifore kugira ngo zikureho fosifore. Kubwibyo, iki gikorwa gikwiriye cyane imishinga ifite kugenzura neza imyuka ihumanya ya azote na fosifore. Imirimo y'ingenzi y'ibikoresho byo gutunganya imyanda yo mu cyaro muri gahunda ya AAO yibanda ku bintu bitatu byo gukora, ari byo pisine idafite umwuka, pisine idafite umwuka n'pisine ikoresha umwuka.
Mu gace k’ibijyanye n’umwuka udakora neza, bitewe n’ibura rya nitrati na ogisijeni mu myanda y’ibikoresho byo gutunganya imyanda byo mu cyaro, bagiteri zikusanya fosifore zibika ingufu mu bintu bikusanya fosifore kandi zigasohora fosifore icyarimwe, mu gihe izindi bagiteri zidakora. Muri iki gice cy’ibijyanye n’umwuka Izindi bagiteri ntizikora cyane kandi zigoranye gukura. Igice cy’ibijyanye n’umwuka udakora neza gikoreshwa mu kugabanya COD no gutegura gukuraho fosifore.
Muri module ya anoxique reaction, imyanda yo mu bikoresho byo mu cyaro byo gutunganya imyanda yo mu ngo ifite ingano runaka ya nitrate idafite ogisijeni, kandi bagiteri zica intege zikoresha COD kugira ngo zigabanye nitrate muri azote, zirekure alkali, kandi zibone ingufu zo gukura. Zigabanya azote ya COD na nitrate.
Uburyo bwo gukora isuzuma ry’ikirere ni bwo buryo bw’ingenzi bwo gukora isuku y’imyanda yo mu cyaro. Aha ngaha, bagiteri zitanga nitrifiti zishyira azote ya ammonia muri azote ya nitrate, zigakoresha alkalinity na ogisijeni, PAO zifata fosifore nyinshi, zigakoresha ingufu ziri muri PHA kugira ngo zikore polyfosforus, kandi OHO zikomeza gukuraho COD, PAO, OHO, kandi bagiteri zitanga nitrifiti zose zikurira muri ubu buryo. Kugabanya COD, azote ya ammonia na fosifore.
Mu isesengura ry’ibikenewe mu mishinga yo gutunganya imyanda yo mu cyaro, guhitamo inzira yo gutunganya imyanda bigomba kuba byujuje ibisabwa ku gipimo cyo kuyitunganya, imiterere y’imyanda, ubwiza bw’amazi asohoka n’amazi asohoka. Muri icyo gihe, inzira ikwiye yo gutunganya imyanda igomba gutoranywa hakurikijwe imiterere y’imyanda yo mu gace. Ingero nyinshi zigaragaza ko ibikoresho byo gutunganya imyanda byo mu cyaro bya AAO bifite ubushobozi bwo guhuza neza n’imishinga itandukanye.
Igihe cyo kohereza: Nyakanga-06-2023