本文關(guān)鍵詞：基于機械淘洗的活性初沉池碳源轉(zhuǎn)化與回收評價　出處：《中國給水排水》2016年17期 　論文類型：期刊論文

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【摘要】：針對我國污水處理廠進水碳氮比值失調(diào)、初沉池中顆粒態(tài)碳源流失嚴重導(dǎo)致生物系統(tǒng)脫氮除磷碳源不足的問題,開展了傳統(tǒng)初沉池運行效果評價與活性初沉池碳源轉(zhuǎn)化回收技術(shù)研究。結(jié)果表明,傳統(tǒng)初沉池對COD的去除率達到40.49%,其中對顆粒態(tài)COD的去除率更是高達56.27%,初沉池中大量碳源的無效流失導(dǎo)致生物系統(tǒng)進水碳氮比值與碳磷比值明顯降低。而在活性初沉池中試系統(tǒng)中,由于大量污泥在池底部長期積累,有利于水解發(fā)酵細菌的繁殖與富集。高通量測序分析結(jié)果顯示,Proteobacteria(34.17%)、Bacteroidetes(22.22%)、Chloroflexi(13.29%)是活性初沉池系統(tǒng)中的優(yōu)勢種群。活性初沉池系統(tǒng)使初沉污泥中微生物種群結(jié)構(gòu)發(fā)生了顯著的變化,而這種變化有利于初沉污泥水解發(fā)酵的進行。通過微生物的水解發(fā)酵及機械攪拌單元的淘洗作用,活性初沉池出水SCOD與VFAs可分別增加51.7 mg/L和18.8 mg/L,經(jīng)過活性初沉池后污水的SCOD/TN值和SCOD/TP值可分別提高40.9%和41.8%�；钚猿醭脸叵到y(tǒng)可有效減少污水中碳源流失,實現(xiàn)對顆粒態(tài)碳源的原位轉(zhuǎn)化與回收。
[Abstract]:Aiming at the imbalance of carbon to nitrogen ratio in the influent of wastewater treatment plants in China, the loss of particulate carbon sources in primary settling tanks has seriously led to the shortage of carbon sources for nitrogen and phosphorus removal in biological systems. The evaluation of operation effect of traditional primary settling tank and the study of carbon source conversion and recovery technology of active primary settling tank were carried out. The results showed that the COD removal rate of traditional primary settling tank was up to 40.49%. The removal rate of granular COD is as high as 56.27%. The ineffective loss of a large number of carbon sources in the primary settling tank led to a significant decrease in the ratio of carbon to nitrogen and carbon to phosphorus in the inlet water of the biological system, while in the pilot system of the active primary settling tank, a large amount of sludge accumulated at the bottom of the tank for a long time. High throughput sequencing analysis showed that Proteobacteria was 34.17%. Bacteroidetes22.22. Chloroflexium 13.29) is the dominant population in the active primary settling tank system, and the microbial population structure in the primary settling sludge is changed significantly by the active settling tank system. This change is beneficial to the hydrolysis and fermentation of primary settling sludge, and through the hydrolysis and fermentation of microorganism and the washing of mechanical agitation unit. The effluent SCOD and VFAs of active primary settling tank increased by 51.7 mg/L and 18.8 mg/L, respectively. The SCOD/TN value and SCOD/TP value of the sewage after the activated primary settling tank can be increased by 40.9% and 41.8 respectively. The carbon source loss in the sewage can be effectively reduced by the active primary settling tank system. The in situ conversion and recovery of particulate carbon sources are realized.
【作者單位】： 徐州工業(yè)職業(yè)技術(shù)學(xué)院建筑工程學(xué)院;
【分類號】：X703
【正文快照】： 目前我國城市污水處理廠主要采用活性污泥工藝,生物脫氮及厭氧釋磷過程需要有機碳源,碳源的種類及含量直接影響生物系統(tǒng)的脫氮除磷效果,這在低碳氮比值污水處理廠表現(xiàn)得尤為明顯。隨著污水處理廠出水水質(zhì)標(biāo)準(zhǔn)的不斷提高,碳源不足的問題更加突出,碳源不足已經(jīng)成為限制提高污水

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本文編號：1415494