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研究生:高維廷
研究生(外文):Wei-Ting Gao
論文名稱:以MBR與後脫硝程序處理煉焦廢水中氨氮之可行性研究
論文名稱(外文):The feasibility of removal ammonia in coking wastewater by MBR with nitrification/denitrification processes.
指導教授:蔡宗岳
指導教授(外文):Tsung-Yueh Tsai
學位類別:碩士
校院名稱:國立高雄第一科技大學
系所名稱:環境與安全衛生工程研究所
學門:工程學門
學類:環境工程學類
論文種類:學術論文
論文出版年:2014
畢業學年度:102
語文別:中文
論文頁數:108
中文關鍵詞:薄膜生物反應器硝化/脫硝氨氮去除煉焦廢水
外文關鍵詞:coking wastewaterMembrane Bioreactornitrification/denitrificationnitrogen removel
相關次數:
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環保署於民國103年1月22日公布含氮煉焦廢水應在105年12月31日將氨氮濃度降至150 mg/L,107年12月31日則需降至60 mg/L。
本研究之煉焦廢水具高濃度的有機碳及氨氮(有機碳濃度為5000至6000 mg/L;氨氮濃度為400至600 mg/L),若此廢水未經妥善處理即逕行排放,不僅對生物及人體有害,對整個生態及環境皆有很大之衝擊。在煉焦廢水中因含有許多生物抑制性物質,因此場內引入一股衛生廢水以1:1的比例與煉焦廢水稀釋。稀釋後,藉由場內MBR設備處理可將COD降至200-500 mg/L,氨氮則無法有效去除 (殘餘200-400 mg/L)。
由於利用傳統前脫硝處理程序對煉焦廢水具有處理效果,但所需水力停留時間較長(6~7天);因此為了縮短水力停留時間以克服用地上的限制,本研究嘗試利用MBR(薄膜生物反應器)結合兩段式硝化/脫硝程序處理煉焦廢水,並探討程序的可行性。
在實驗室規模的兩段式後脫硝設備中結果顯示,在兩段式硝化/脫硝程序操作下,即使在高氨氮負荷0.108 kg N/kg VSS-day時,亦能有效降解MBR處理後的煉焦廢水,最終試程於水力停留時間6/13.2小時(脫硝槽/硝化槽),總氮去除率有八成。出流水中的氨氮濃度可降至10 mg/L以下,顯示後脫硝處理經MBR處理後的煉焦廢水中氨氮之可行性。
In 2014,the EPA of Taiwan announced new effluent discharge standards for the chemical industry.It is focus on the ammonia nitrogen in this new effluent discharge standards and ammonia nitrogen will be regulated in two stages.
In this study,we discussed the feasibility of using the MBR with traditional biological nitrification/denitrification process for treating coking wastewater.The coking wastewater contains high concentration COD,ammonia and SCN- a lot of refractory and toxic compounds in COD.Some people used denitrifition/nitrification process to treat the coking wastewater.Although COD and ammonia nitrogen concentration was from 2500 mg/L and 800 mg/L down to 250 mg/L and 30 mg/L,but the HRT need to 6~7 days.
This study using existing processing equipment –MBR in order to solve the problem of land area.The MBR is very useful to degrade the COD.It could be decreased from COD 2500 mg/L down to 200-500 mg/L,but could not remove a lot of ammonia nitrogen(remain 200-300 mg/L) from coking wastewater.
In lab scale,two reactors were started up for the continuous experiment.One is oxic (O)reactor for nitrification to convert ammonia to nitrate or nitrite.Another one is anoxic(A) reactor for denitrification to remove COD and convert nitrate to nitrogen.The continuous experiment results reveal that the ammonia nitroden concentration could be decrease from 200-300 mg/L down to lower 10 mg/L and ammonia conversion rate was higher than 90% when HRT were 6/13.2(A/O) hrs.It was confirmed that the feasibility of treating the coking wastewater by the MBR with biological nitrification/denitrification process.
摘要 I
Abstract II
誌謝 IV
表目錄 IX
圖目錄 X
第壹章 前言 1
1.1研究背景 1
1.2 研究目的 3
第貳章 文獻回顧 4
2.1 煉焦製程及其廢水處理程序 4
2.1.1 煉焦製程 4
2.1.2 煉焦產物及廢水水質特性 6
2.1.3 煉焦廢水處理程序與技術 10
2.2 氮的循環 15
同化作用(Immobilization) 16
2.3 硝化作用 17
2.3.1 自營性硝化作用 18
2.3.3 影響硝化作用的因子 20
2.4 脫硝作用 25
2.4.1 影響脫硝作用的因子 27
2.5 含氮污染物的去除程序 29
2.5.1 生物硝化脫硝組合程序 30
2.5.2 新發展的氮污染物處理程序 35
第叁章 實驗設備與方法 39
3.1水質分析項目 39
3.1.1 一般水質分析項目 39
3.1.2 儀器分析 44
3.2 實驗規劃與操作參數 46
3.2.1 廢水及活性污泥性質 46
3.2.2 實驗操作流程 47
3.3 兩段式好氧硝化/厭氧脫硝組合程序 49
3.3.1 硝化導流管式流體化床 50
3.3.2 脫硝導流管式流體化床 50
3.4 生物活性與反應特性檢驗法 53
3.4.1 批分式BOD瓶比攝氧速率實驗 (SOUR test) 54
3.4.2 批分式血清瓶生化產氮氣潛能實驗(BNP test) 55
第肆章 結果與討論 59
4.1 煉焦製程廢水水質特性分析 59
4.2 微生物馴養 61
4.2.1 好氧硝化反應槽 61
4.2.2 厭氧脫硝反應槽 62
4.3 兩段式硝化脫硝反應槽串連續流功能探討 67
4.4 脫硝菌以不同基質為碳源之探討 77
4.5 脫硝污泥以MBR後煉焦廢水為碳源之探討 83
4.6 好氧硝化槽污泥活性探討 86
第伍章、結論與建議 88
5.1 結論 88
5.2 建議 89
文獻回顧 90
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