本文選題：污泥發(fā)酵 + 水解酸化　； 參考：《東南大學學報(自然科學版)》2016年02期

【摘要】：為了研究單過硫酸氫鉀復合鹽(PMS)對剩余污泥厭氧發(fā)酵的影響,將不同劑量的PMS投加至剩余污泥厭氧發(fā)酵系統(tǒng)中,分析污泥溶液化率、污泥分解率、可揮發(fā)性脂肪酸(SCFAs)、蛋白質和多糖、水解酶、發(fā)酵污泥毛細吸水時間(CST)及可揮發(fā)性懸浮固體濃度(MVLSS)等指標.研究發(fā)現(xiàn),在污泥中投入適量的PMS能夠有效地促進污泥水解酸化,提高污泥減量率.結果表明,當PMS為0.04~0.08 mg/mg時污泥發(fā)酵性能最佳,水解酸化性能相近.當PMS大于0.08mg/mg時,污泥發(fā)酵性能下降,且該條件下藥劑消耗成本較高,不利于發(fā)酵系統(tǒng)運行.研究同時發(fā)現(xiàn),PMS能夠顯著提高SCFAs中乙酸的比例,乙酸比例最高可達到75.55%,同時降低丙酸比例,丙酸比例最低可達到0.92%.
[Abstract]:In order to study the effect of potassium persulfate (KH _ 2SO _ 4) compound salt on the anaerobic fermentation of excess sludge, different doses of PMS were added to the anaerobic fermentation system to analyze the sludge solubilization rate and sludge decomposition rate.Volatile fatty acids such as SCFAsC, protein and polysaccharides, hydrolase, capillary water absorption time (CSTs) and volatile suspended solid concentration (MVLSS).It is found that proper amount of PMS in sludge can effectively promote sludge hydrolysis and acidification and increase sludge reduction rate.The results showed that when the PMS was 0.04 ~ 0.08 mg/mg, the sludge fermentation performance was the best and the hydrolytic acidification performance was similar.When PMS is larger than 0.08mg/mg, the fermentation performance of sludge decreases, and the cost of medicament consumption is high under this condition, which is not conducive to the operation of fermentation system.At the same time, it was found that the ratio of acetic acid in SCFAs could be increased significantly, the highest ratio of acetic acid was 75.55 and the ratio of propionic acid was decreased, and the lowest ratio of propionic acid could be reached to 0.92%.
【作者單位】： 北京工業(yè)大學北京市水質科學與水環(huán)境恢復工程重點實驗室;
【基金】：國家水體污染控制與治理科技重大專項資助項目(2015ZX07218001) 第十三屆研究生科技基金資助項目(ykj-2014-10608)
【分類號】：X703

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