厭氧氨氧化顆粒污泥的培養(yǎng)及影響因素*

蔡慶 黃陽(yáng)全 羅樂(lè) 周皓

(重慶工程職業(yè)技術(shù)學(xué)院礦業(yè)與環(huán)境工程學(xué)院 重慶 402260)

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厭氧氨氧化顆粒污泥的培養(yǎng)及影響因素*

蔡慶 黃陽(yáng)全 羅樂(lè) 周皓

(重慶工程職業(yè)技術(shù)學(xué)院礦業(yè)與環(huán)境工程學(xué)院 重慶 402260)

厭氧氨氧化 顆粒污泥 N2H4COD Fe3+

0 引言

1 材料與方法

1.1 實(shí)驗(yàn)裝置、用水及接種污泥

1.2 實(shí)驗(yàn)方案

1.3 檢測(cè)項(xiàng)目及分析方法

2.1 反應(yīng)器運(yùn)行情況

反應(yīng)器啟動(dòng)過(guò)程中污泥的粒徑分布見(jiàn)圖2。接種污泥體積平均粒徑為74 μm，見(jiàn)圖2(a)；在第31 d污泥體積平均粒徑增長(zhǎng)到109 μm，見(jiàn)圖2(b)；在第93 d污泥體積平均粒徑增長(zhǎng)到307.5 μm，見(jiàn)圖2(c)，此時(shí)反應(yīng)器中的污泥為絮狀和顆粒狀污泥混合物。強(qiáng)烈的水力選擇壓力對(duì)顆粒污泥的形成至關(guān)重要[15]；但水力選擇壓力又不能太高，否則會(huì)使反應(yīng)器內(nèi)ANAOB大量流失，本文通過(guò)保持合適升流速率(4.5 m/h)[8]成功培養(yǎng)得到厭氧氨氧化絮狀和顆粒狀污泥混合物。Vlaeminck等[16]采用類(lèi)似的條件在SBR中培養(yǎng)出CANON顆粒和絮狀污泥的混合物，顆粒污泥占污泥VSS體積的57%，平均粒徑1.8 mm；絮狀污泥占污泥VSS體積的43%。

(a)反應(yīng)器中質(zhì)量濃度變化情況

(b)總氮去除效率及去除速率情況

(a)第1 d

(b)第31 d

(c)第93 d

2.3 N2H4對(duì)厭氧氨氧化的影響

圖4 不同質(zhì)量濃度N2H4對(duì)厭氧氨氧化的影響

2.4 COD對(duì)厭氧氨氧化的影響

圖5 不同質(zhì)量濃度COD對(duì)厭氧氨氧化的影響

2.5 Fe3+對(duì)厭氧氨氧化的影響

圖6 不同濃度的Fe3+對(duì)厭氧氨氧化的影響

3 結(jié)論

(1)在EGSB反應(yīng)器中成功啟動(dòng)厭氧氨氧化過(guò)程,總氮去除速率和總氮去除效率分別達(dá)到0.931±0.006 kg/(m3·d)和90.5%±0.8%。培養(yǎng)得到厭氧氨氧化顆粒污泥和絮狀污泥混合物，污泥平均粒徑為307.5 μm。

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The Cultivation and the Effecting Factors of ANAMMOX Granular Sludge

CAI Qing HUANG Yangquan LUO Le ZHOU Hao

(SchoolofMiningandEnvironmentalEngineering,ChongqingVocationalInstituteofEngineeringChongqing402260)

anaerobic ammonium oxidation granular sludge N2H4COD Fe3+

重慶市教委科學(xué)技術(shù)研究項(xiàng)目(KJ1403202)。

蔡慶,男, 1985年生，湖北荊門(mén)人,博士,講師,主要從事廢水處理理論與技術(shù)方面的研究。

2015-05-28)