本文關(guān)鍵詞：小型分散式生活污水高效厭氧及脫氮脫臭工藝研究　出處：《東南大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 分散式生活污水 厭氧折流板反應(yīng)器 脫氮除臭 生物生態(tài)組合工藝

【摘要】：近年來(lái),農(nóng)村生活污水排放已成為污染水體的重要因素,開發(fā)出農(nóng)村分散式生活污水處理技術(shù)迫在眉睫。東南大學(xué)課題組提出了厭氧折流板反應(yīng)器—缺氧除臭池—好氧水車生物轉(zhuǎn)盤—人工濕地的生物生態(tài)組合工藝。該工藝具有管理運(yùn)行簡(jiǎn)單、能耗低、處理效果好、氮磷資源可回收等特點(diǎn)。本課題通過(guò)對(duì)厭氧單元、缺氧單元和整體工藝的處理效果及工藝參數(shù)研究,在實(shí)現(xiàn)高效降解污染物的同時(shí),有效削除地表構(gòu)筑物的臭味,實(shí)現(xiàn)污水處理的景觀化和園林化。主要得出以下結(jié)論：(1)在夏季和春秋季厭氧折板反應(yīng)器的COD處理率隨HRT的增加而提高。夏季HRT和春秋季HRT分別為72h和96h時(shí)COD的去除率可分別達(dá)到72%和67%。厭氧折流板反應(yīng)器前四個(gè)隔室完成了大部分可降解有機(jī)物的去除。產(chǎn)氣量隨著容積負(fù)荷的提高而增加。出水臭閾值隨HRT增大而減小,在夏季HRT 72h、春秋季HRT 96h時(shí),出水平均臭閾值降至220和210以下。建議夏季HRT為72h,春秋季HRT為96h,厭氧反應(yīng)器隔室數(shù)為4。(2)冬季低溫對(duì)厭氧折流板反應(yīng)器處理效果有顯著影響。HRT為120 h時(shí),COD的去除率可達(dá)60%左右。厭氧折流板反應(yīng)器前四個(gè)隔室完成對(duì)大部分有機(jī)物的去除。產(chǎn)氣量隨著容積負(fù)荷的降低和溫度的降低而大幅減少。出水臭閡值隨HRT增大而升高,HRT為120h時(shí),出水平均臭閾值降至275以下。冬季低溫條件下建議HRT為120h,反應(yīng)器隔室數(shù)為4。(3)缺氧除臭池在夏季除脫氮除臭效果隨硝化液回流比的增加而提高,回流比為100%時(shí),TON去除率達(dá)到90%以上,硫化物去除率達(dá)到96.1%,總氮去除率達(dá)到40.1%。隨著硝酸鹽負(fù)荷和溶解氧濃度的增大(通過(guò)調(diào)節(jié)回流比)除臭效果有所提高而反硝化效果有所降低,硝酸鹽負(fù)荷和進(jìn)水溶解氧濃度分別為20g/(m3·d)和2.5mg/L時(shí),可獲得最佳的脫氮除臭效果。N/S比和C/N比也是影響缺氧池脫氮除臭的重要因素。隨著N/S比增加,除臭效果提高而反硝化率有所降低：隨著C/N增大,除臭效果顯著降低,而反硝化率提高。N/S和C/N分別為1.0和6.0時(shí),可獲得最佳的脫氮除臭效果。(4)春秋季回流比為150%時(shí),TON去除率達(dá)87.2%,硫化物去除率達(dá)91.3%,總氮去除率為38.7%。進(jìn)水硝酸鹽負(fù)荷和溶解氧濃度分別為25g/(m3·d)和3.2mg/L時(shí),可獲得最佳的脫氮除臭效果。同時(shí),N/S和C/N分別為1.5和4.0時(shí),可達(dá)到得最佳的脫氮除臭效果(5)冬季,受低溫的影響脫氮和除臭效果有所下降。回流比為200%時(shí),TON去除率達(dá)85.6%,硫化物去除率達(dá)88.5%,總氮去除率為33.7%。進(jìn)水硝酸鹽負(fù)荷和溶解氧濃度分別為30g/(m3·d)和3.8mg/L時(shí),可獲得最佳的脫氮除臭效果。同時(shí),N/S和C/N分別為2.0和3.5時(shí),可達(dá)到得最佳的脫氮除臭效果(6)該生物生態(tài)組合工藝運(yùn)行穩(wěn)定,出水COD、總氮、氨氮、總磷平均濃度分別為10.4～28.7 mg/L、3.6～11.5mg/L、0.5-4.6mg/L、0.21～O.48mg/L。該工藝出水水質(zhì)達(dá)到城鎮(zhèn)污水處理廠污染物排放標(biāo)準(zhǔn)一級(jí)A標(biāo)準(zhǔn)。缺氧池出水逸出氣體中硫化氫和氨氣濃度分別為0.043～0.058 mg/m3和0.320～0.378 mg/m3,達(dá)到國(guó)家惡臭污染物排放標(biāo)準(zhǔn)的二級(jí)排放標(biāo)準(zhǔn)。
[Abstract]:In recent years, the discharge of sewage in rural life has become an important factor in water pollution, develop the imminent rural decentralized municipal wastewater treatment technology. Southeast University research group proposed an anaerobic baffled reactor - anoxic - aerobic biological deodorization pool water rotary - artificial wetland biological ecological combined process. The process has simple operation, energy consumption low, good treatment effect, the characteristics of nitrogen and phosphorus resources Recyclable. Based on the study of treatment effects of anoxic anaerobic unit, unit and the overall process and process parameters in the efficient degradation of pollutants at the same time, effectively eliminating the surface building odor of sewage treatment and landscaping of the garden. The main conclusion as following: (1) treatment rate decreased with the increase of HRT in summer and autumn season ABR COD increased. HRT in summer and spring and autumn HRT respectively the removal of COD 72h and 96h The rate can reach 72% and 67%. anaerobic baffled reactor four compartments to remove most organic matter degradation. The gas production increased with increasing volume load. The water odor threshold decrease with increasing HRT and HRT 72h, in the summer, spring and autumn HRT 96h, average odor threshold dropped to 220 210. HRT and 72h suggest the summer, spring and autumn HRT 96h, anaerobic reactor compartment number is 4. (2) of low temperature in winter of anaerobic baffled reactor treatment effect had significant effect of.HRT was 120 h, the COD removal rate can reach about 60%. The anaerobic baffled reactor four isolation room on the removal of most organic compounds. The gas production significantly decreased with decreasing volume load and decrease of temperature. The water odor threshold value increases with the increase of HRT, HRT is 120h, the average odor threshold below 275. Under low temperature in winter HRT 120h, reactor compartment The number is 4. (3) hypoxia deodorization pool in the summer in addition to increased nitrogen deodorizing effect with nitrification liquid reflux ratio increased, reflux ratio is 100%, the removal rate of TON reached more than 90%, the sulfide removal rate reached 96.1%, the total nitrogen removal rate of 40.1%. increases with the load of nitrate and dissolved oxygen concentration (by adjusting the reflux ratio) increased deodorizing effect and denitrification effect decreased, nitrate loading and dissolved oxygen concentration were 20g/ (M3 - D) and 2.5mg/L, can obtain the important factors of nitrogen removal deodorization effect of.N/S ratio and C/N ratio also affect the anaerobic pool denitrification deodorization best. With the increase of N/S ratio, deodorization the effect of increasing the denitrification rate decreased as C/N increases, the deodorizing effect is significantly reduced, and the denitrification rate increased by.N/S and C/N were 1 and 6, available nitrogen and deodorizing effect. The best (4) in spring and autumn, reflux ratio is 150%, the removal rate of TON reached 87. 2%, the sulfide removal rate was 91.3%, total nitrogen removal rate was 38.7%. influent nitrate loading and dissolved oxygen concentration were 25g/ (M3 - D) and 3.2mg/L, can obtain the best nitrogen deodorizing effect. At the same time, N/S and C/N were 1.5 and 4, can be achieved the best deodorization effect of nitrogen removal (5) in winter, affected by low temperature nitrogen and deodorization effect decreased. Reflux ratio is 200%, the removal rate of TON reached 85.6%, the sulfide removal rate was 88.5%, total nitrogen removal rate was 33.7%. influent nitrate loading and dissolved oxygen concentration were 30g/ (M3 - D) and 3.8mg/L, can get off the best nitrogen deodorizing effect. At the same time, N/S and C/N were 2 and 3.5, can be achieved the best deodorization effect of nitrogen (6) run the biological ecological combined process is stable, the effluent COD, ammonia nitrogen, total nitrogen, total phosphorus concentrations were 10.4 ~ 28.7 mg/L, 3.6 ~ 11.5mg/L, 0.21 ~ 0.5-4.6mg/L. The O.48mg/L. process The quality of water reached the first level A standard of pollutant discharge standard of municipal wastewater treatment plant. The concentrations of hydrogen sulfide and ammonia in the effluent of the anoxic pond were 0.043 ~ 0.058 mg/m3 and 0.320 ~ 0.378 mg/m3, respectively, which reached the two level emission standard of the national odor pollutants discharge standard.

【學(xué)位授予單位】：東南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X799.3

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