本文選題：單級(jí)自養(yǎng)脫氮 + 低氨氮廢水�。� 參考：《中國(guó)給水排水》2017年17期

【摘要】：利用序批式反應(yīng)器(SBR),以連續(xù)微量曝氣方式快速啟動(dòng)單級(jí)自養(yǎng)脫氮系統(tǒng),并對(duì)啟動(dòng)調(diào)控措施及穩(wěn)定運(yùn)行過程進(jìn)行研究。結(jié)果表明,在連續(xù)微量曝氣條件下,控制系統(tǒng)DO為0.24~0.35 mg/L、進(jìn)水NH_4~+-N為50 mg/L、HRT為3 h、溫度為28~32℃時(shí),成功啟動(dòng)了單級(jí)自養(yǎng)脫氮系統(tǒng)。穩(wěn)定運(yùn)行時(shí)TN去除率保持在85%左右,平均容積去除負(fù)荷達(dá)到0.18 kg N/(m~3·d)。隨著系統(tǒng)脫氮性能的提升,短程硝化與厭氧氨氧化酶促反應(yīng)的關(guān)鍵酶AMO、HDH活性不斷提高,穩(wěn)定運(yùn)行時(shí)分別為4.24μmol NO_2~-N/(mg Pro·min)和0.45μmol Cyto-c/(mg Pro·min)。采用16S r DNA高通量測(cè)序技術(shù)對(duì)不同時(shí)期的微生物種群結(jié)構(gòu)進(jìn)行檢測(cè)后發(fā)現(xiàn),絮狀和顆粒污泥樣品中Candidatus Brocadia(AAOB)相對(duì)豐度分別從1.9%、33.5%增加到5.8%、46.5%,Nitrosomonadaceace(AOB)主要存在于絮狀污泥中,相對(duì)豐度從2.8%增至7.3%。
[Abstract]:The single stage autotrophic denitrification system was rapidly started by continuous micro aeration in a sequencing batch reactor, and the startup control measures and stable operation process were studied.The results show that the single stage autotrophic denitrification system has been successfully started under continuous micro aeration condition when the control system do is 0.24 mg / L, the influent NH4 ~ -N is 50 mg / L, HRT is 3 h, and the temperature is 2832 鈩，

本文編號(hào)：1738949