本文選題：好氧顆粒污泥 + 常溫與低溫　； 參考：《哈爾濱工業(yè)大學》2015年碩士論文

【摘要】：與傳統(tǒng)絮狀活性污泥相比,好氧顆粒污泥憑借微生物含量高、種群豐富、污泥密度大、沉降性能優(yōu)越以及不易發(fā)生污泥膨脹等優(yōu)勢成為當前污水處理領域的研究熱點。然而目前關于好氧顆粒污泥技術的研究主要在常溫下利用人工配水模擬廢水進行,而在生活污水應用領域以及低溫下的研究較少�；诖�,本研究通過在常溫和低溫兩種條件下,以生活污水為研究對象,進行好氧顆粒污泥的培養(yǎng),并探究了常溫和低溫下污泥EPS特性及其除污性能。采用生活污水外加碳源,以厭氧-好氧交替方式運行SBR反應器在常溫(R2)和低溫(R3)下均可以成功培養(yǎng)出好氧顆粒污泥,常溫和低溫下污泥平均粒徑分別達160μm和300μm左右;同時常溫下接種人工配水培養(yǎng)的顆粒污泥(R1)經短期馴化也可以適應生活污水水質,經馴化的顆粒污泥平均粒徑在375μm左右。成熟的顆粒污泥體系為顆粒與絮體的共存體,具有豐富的食物鏈結構,優(yōu)勢菌群為球菌和桿菌。好氧顆粒污泥微生物胞外聚合物分泌量較接種絮體污泥大,污泥的顆�；c微生物胞外聚合物過量分泌有關;紅外光譜分析發(fā)現(xiàn),顆粒污泥與絮體污泥胞外聚合物中個別基團發(fā)生偏移,說明兩種污泥胞外聚合物特性有差異;熒光光譜分析發(fā)現(xiàn),顆粒污泥胞外聚合物中有類蛋白質、類富里酸和類腐殖酸等物質,且類蛋白質含量最高。好氧顆粒污泥對生活污水有較好的處理效果。R1出水COD、TN平均值分別為44.70mg/L、20.09mg/L,平均去除率為91.88%、66.31%;R2出水COD、TN分別為44.48mg/L、21.38mg/L,平均去除率為91.93%、64.20%;R3出水COD、TN分別為54.34mg/L、19.40mg/L,平均去除率為85.84%、67.63%;三個好氧顆粒污泥反應器出水磷酸鹽濃度均在0.5mg/L以內,平均去除率在97%以上;出水N 4-N濃度均在2.0mg/L以內,平均去除率在99%以上;同時,常溫與低溫反應器對COD、氨氮、磷沖擊均具有較強的耐受性。好氧顆粒污泥反應器在常溫和低溫條件下能實現(xiàn)SND作用脫氮,在厭氧-好氧-缺氧運行方式下反應器可進一步增強脫氮效果,常溫和低溫條件下脫氮效果分別可達76.5%、95.2%;低溫條件下硝化速率較低,反應器可實現(xiàn)亞硝態(tài)氮的積累,最大積累率達80%。
[Abstract]:Compared with the traditional flocculating activated sludge aerobic granular sludge with the advantages of high microbial content rich population high sludge density superior settling performance and not easy to occur sludge bulking has become a hot spot in the field of wastewater treatment. However, the present research on aerobic granular sludge technology is mainly carried out at room temperature using artificial water distribution to simulate wastewater, but less in the field of domestic sewage application and at low temperature. Based on this, the aerobic granular sludge was cultured under two conditions of room temperature and low temperature, and the characteristics of sludge EPS and its decontamination performance were investigated at room temperature and low temperature. Aerobic granular sludge could be successfully cultured in the SBR reactor at room temperature (R2) and low temperature (R3) by using additional carbon source. The average diameter of sludge at room temperature and low temperature was about 160 渭 m and 300 渭 m, respectively. At the same time, the granulated sludge (R1) inoculated with artificial water at room temperature could also adapt to the domestic sewage quality after short-term acclimation, and the average diameter of the domesticated granular sludge was about 375 渭 m. The mature granular sludge system is a coexisting particle and floc with abundant food chain structure, and the dominant bacteria groups are cocci and bacilli. The amount of extracellular polymer secreted by aerobic granular sludge was larger than that of inoculated flocs, and the granulation of sludge was related to the excessive secretion of extracellular polymer by microorganism. The migration of individual groups in extracellular polymers between granular sludge and floc sludge indicates that the characteristics of extracellular polymers of two kinds of sludge are different, and fluorescence spectrum analysis shows that there are protein-like proteins in extracellular polymers of granular sludge. Fulvic acid and humic acid and other substances, and protein-like content is the highest. Aerobic granular sludge has a better treatment effect on domestic sewage. The average COD TN of R1 effluent is 44.70 mg / L 20.09 mg / L, the average removal rate is 91.88 mg / L 66.31R2 effluent CODTN is 44.48 mg / L / L ~ (21.38 mg / L), the average removal rate is 91.93333.20 ~ (20) N / L = 54.34 mg / L ~ (19.40 mg 路L ~ (-1), the average removal rate is 85.84 mg / L ~ (19.40 mg / L), respectively; The phosphate concentration in the effluent of granular sludge reactor was within 0.5mg/L. The average removal rate was over 97%, the concentration of N _ 4-N in effluent was within 2.0mg/L and the average removal rate was above 99%. At the same time, the reactor at room temperature and low temperature had strong tolerance to COD, NH _ 3-N and P shock. Aerobic granular sludge reactor can realize denitrification by SND at room temperature and low temperature, and further enhance denitrification effect under anaerobic aerobic anoxic operation mode. The denitrification effect at room temperature and low temperature was 76. 5% and 95. 2, respectively, and the nitrification rate was lower at low temperature. The maximum accumulation rate of nitrite nitrogen was 80% in the reactor.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：X703

【參考文獻】

相關期刊論文 前8條

1 方亮;張麗麗;蔡偉民;;活性污泥胞外多聚物提取方法的比較[J];環(huán)境科學與技術;2006年03期

2 王景峰,王暄,田淑媛;SBR強化生物系統(tǒng)處理高濃度含磷廢水[J];中國給水排水;2003年05期

3 馬放;李平;張曉琦;孫靜文;王弘宇;張佳;;SBR反應器同步硝化反硝化影響因素及其特性[J];哈爾濱工業(yè)大學學報;2011年08期

4 王超;鄭曉英;;剪切應力對好氧顆粒污泥形態(tài)結構和微生物活性的影響機制研究[J];環(huán)境科學;2008年08期

5 彭永臻;吳蕾;馬勇;王淑瑩;李凌云;;好氧顆粒污泥的形成機制、特性及應用研究進展[J];環(huán)境科學;2010年02期

6 周玲玲;張永吉;宋正國;曾果;葉河秀;高乃云;李圭白;;pH和溫度對氯胺消毒給水管網硝化作用的影響[J];環(huán)境科學;2011年06期

7 遲寒;劉毅慧;楊鳳林;張興文;;好氧顆粒污泥處理城市生活污水[J];水處理技術;2006年08期

8 王惠;劉研萍;陶瑩;劉新春;;厭氧氨氧化菌脫氮機理及其在污水處理中的應用[J];生態(tài)學報;2011年07期

相關碩士學位論文 前4條

1 劉琳;好氧顆粒污泥的培養(yǎng)及穩(wěn)定運行研究[D];東北林業(yè)大學;2010年

2 楊延棟;不同運行方式下好氧顆粒污泥處理生活污水[D];哈爾濱工業(yè)大學;2013年

3 盧陽陽;生活污水同步硝化反硝化脫氮研究[D];北京交通大學;2014年

4 程戰(zhàn)利;生物除磷顆粒污泥的培養(yǎng)馴化及性能[D];哈爾濱工業(yè)大學;2014年

，

本文編號：1878190