本文關(guān)鍵詞： 好氧顆粒污泥 SBR 生物選擇段 回流　出處：《中國給水排水》2016年21期 　論文類型：期刊論文

【摘要】：在SBR中通過投加顆粒活性炭并設(shè)置生物選擇器以促進(jìn)好氧顆粒污泥(AGS)的形成,并研究出水回流對系統(tǒng)穩(wěn)定性的影響,為AGS工藝的發(fā)展提供技術(shù)支持。由于操作不當(dāng)及蚊蠅幼蟲大量繁殖,導(dǎo)致第一次培養(yǎng)在20 d時發(fā)生污泥膨脹。第二次培養(yǎng)時接種污水處理廠剩余污泥,設(shè)置厭氧生物選擇器并投加20 g活性炭,在第3天即觀察到新生的長絲狀生物膜及不規(guī)則的AGS,21 d時幾乎全部以菌膠團(tuán)及AGS的形式存在,25 d時SV30/SV5、SVI、MLSS及含水率分別為83.03%、40.64 m L/g、6.7 g/L及97.90%,反應(yīng)器對COD、TIN及TP的去除率保持在90%以上。隨著回流量的增大,系統(tǒng)的穩(wěn)定性受到一定沖擊,導(dǎo)致污泥理化特性及出水水質(zhì)發(fā)生異常波動。為減小外部沖擊的影響,微生物通過增加或減少EPS的分泌以適應(yīng)新的環(huán)境,使得自第22天開始污泥理化特性逐漸趨穩(wěn)。而出水氨氮和SS濃度明顯升高,主要是混合液鹽度的增加導(dǎo)致絮體難以下沉,引起出水SS的升高及污泥齡的減小,從而削弱了反應(yīng)器的硝化能力。
[Abstract]:The formation of aerobic granular sludge (AGSs) was promoted by adding granular activated carbon and biological selector in SBR, and the effect of water reflux on the stability of the system was studied. It provides technical support for the development of AGS process. Due to improper operation and mass propagation of mosquito and fly larvae, sludge bulking occurs in the first culture for 20 days, and the surplus sludge in the sewage treatment plant is inoculated during the second culture. On the third day, the long filamentous biofilm and irregular AGSN were observed in the form of microbial micelles and AGS. At 25 days, the MLSs and moisture content of SV30 / SV5 / SVIN were 83.03 and 40.64 mL / g respectively, 6.7 g / L and 97.90%, respectively. The removal rate of COD tin and TP remained above 90%. With the increase of reflux, the stability of the system was affected to a certain extent. In order to reduce the impact of external shock, microorganisms adapt to the new environment by increasing or reducing the secretion of EPS. The physical and chemical characteristics of sludge gradually stabilized since the 22nd day, while the concentration of ammonia nitrogen and SS increased obviously, mainly because of the increase of salinity of the mixed solution, which caused the flocs to be difficult to sink. The SS of effluent increased and the sludge age decreased, which weakened the nitrification ability of the reactor.
【作者單位】： 江西理工大學(xué)建筑與測繪學(xué)院;
【基金】：江西省教育廳科技項目(GJJ150627)
【分類號】：X703
【正文快照】： 好氧顆粒污泥(AGS)具有許多普通活性污泥難以比擬的優(yōu)點[1],如規(guī)則的形狀、良好的沉降性能、能單級同步脫氮除磷、可承受較高有機負(fù)荷等。得益于這些優(yōu)點,AGS已成為廢水生物處理領(lǐng)域中的研究熱點。經(jīng)過二十多年的發(fā)展,AGS已在形成條件、處理各類廢水的應(yīng)用等方面積累了大量成

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 蘇海佳;王陸璽;鄧爽;代雅潔;王晨旭;;好氧顆粒污泥技術(shù)及研究進(jìn)展[J];化工進(jìn)展;2016年06期

2 王曉慧;劉永軍;劉U，

本文編號：1470220