本文選題：地表水 + 錳污染　； 參考：《安徽建筑大學(xué)》2017年碩士論文

【摘要】：隨著社會(huì)經(jīng)濟(jì)的快速發(fā)展,地表水錳污染現(xiàn)象頻頻發(fā)生,這無疑增加了城市凈水廠水處理的難度,嚴(yán)重威脅人們生產(chǎn)生活用水。本文主要針對(duì)合肥某凈水廠除錳工藝的現(xiàn)狀開展了相關(guān)研究�；诂F(xiàn)場(chǎng)調(diào)查檢測(cè):了解了水廠各處理構(gòu)筑物參數(shù)、水處理藥劑投加位點(diǎn)及其原水水質(zhì)情況;利用高碘酸鉀分光光度法對(duì)錳的總量與可溶態(tài)進(jìn)行測(cè)定,研究了含錳原水在凈水工藝的遷移轉(zhuǎn)化和去除特性;通過實(shí)驗(yàn)室燒杯試驗(yàn),將生產(chǎn)廢水直接與原水按一定比例混合進(jìn)行混凝試驗(yàn),分析了含錳生產(chǎn)廢水回流對(duì)除錳工藝的影響,并給出水廠污泥處置的對(duì)策。主要研究結(jié)果包括:(1)試驗(yàn)期間,凈水廠飲用水源地水質(zhì)良好。原水中的氨氮、COD_(Mn)、亞硝酸鹽含量均滿足地表水三類環(huán)境質(zhì)量標(biāo)準(zhǔn),而錳濃度均大于0.1mg/L,最高達(dá)0.30mg/L。水廠采用高錳酸鉀預(yù)氧化+高密度沉淀池+砂濾組合工藝,可使出廠水滿足我國(guó)《生活飲用水標(biāo)準(zhǔn)》(GB5749-2006)中對(duì)飲用水中錳不超過0.1mg/L的限定。(2)對(duì)原水及各處理單元出水錳的總量與可溶態(tài)進(jìn)行檢測(cè),結(jié)果發(fā)現(xiàn):總錳、可溶性錳與溶解氧在水深4米以上均變化不大,可溶態(tài)的錳約占總錳比例為50%,而當(dāng)水深達(dá)到6米時(shí),總錳與可溶性錳濃度均發(fā)生激增,并隨水深的增加而增加,最高分別達(dá)到7.51mg/L、7.34mg/L。此時(shí),底部水體溶解氧含量遠(yuǎn)低于表層而形成厭氧環(huán)境,可能是導(dǎo)致底層水體錳激增的原因。(3)在各處理單元中,高錳酸鉀預(yù)氧化可將原水中近60%的可溶態(tài)的錳氧化成顆粒態(tài),并提高了高密池對(duì)顆粒態(tài)錳的脫穩(wěn)沉淀和少量可溶性錳的吸附去除作用,總錳去除率高達(dá)85%以上。砂濾過程對(duì)可溶性錳的氧化去除作用可以忽略。當(dāng)原水進(jìn)水總錳濃度在0.3mg/L時(shí),經(jīng)過高錳酸鉀預(yù)氧化+高密度沉淀池+砂濾組合工藝的處理使得出水總錳濃度僅為0.01mg/L,總?cè)コ蕿?0%。(4)生產(chǎn)廢水中的錳元素主要以可溶態(tài)形式存在,對(duì)其進(jìn)行混凝攪拌試驗(yàn)發(fā)現(xiàn):隨著混凝劑投加量的增加,沉后上清液的濁度與COD_(Mn)都呈先減后增的變化趨勢(shì),而氨氮與錳的含量基本保持不變。當(dāng)混凝劑投加量為20mg/L時(shí),濁度與COD_(Mn)含量最低。將生產(chǎn)廢水與原水按一定比例混合進(jìn)行混凝試驗(yàn)表明:隨著生產(chǎn)廢水回流比的增加,沉后上清液的氨氮與錳含量均出現(xiàn)大幅度增加。
[Abstract]:With the rapid development of social economy, manganese pollution in surface water occurs frequently, which undoubtedly increases the difficulty of water treatment in urban water purification plants and seriously threatens people's production and living water use. This paper mainly focused on the present situation of manganese removal process in a water purification plant in Hefei. Based on field investigation and detection, the parameters of treatment structures, the dosing sites of water treatment agents and the water quality of raw water were understood, and the total amount and soluble state of manganese were determined by potassium periodate spectrophotometry. The characteristics of migration, transformation and removal of raw water containing manganese in the process of purifying water were studied, and the effect of reflux of wastewater containing manganese on manganese removal process was analyzed by mixing production wastewater with raw water in a certain proportion through laboratory beaker test. The countermeasures of sludge disposal in water plant are also given. The main results include: 1) during the test period, the drinking water quality of the water purification plant was good. The contents of nitrite in raw water all meet the three environmental quality standards of surface water, and the manganese concentration is more than 0.1 mg / L, the highest is 0.30 mg / L. The combined process of preoxidation of potassium permanganate and sand filtration of high density sedimentation tank was adopted in the water plant. The total amount and soluble state of manganese in raw water and the effluent of each treatment unit can be determined by the limit of mn in drinking water not exceeding 0.1mg/L in China (GB5749-2006). The results show that: total manganese, The ratio of soluble manganese to total manganese was about 50. When the water depth reached 6 meters, the concentrations of total manganese and soluble manganese increased rapidly, and increased with the increase of water depth, the highest value was 7.51 mg / L ~ (7.34) mg 路L ~ (-1), respectively. At this time, the dissolved oxygen content in the bottom water is far lower than that in the surface water, which may be the reason for the manganese explosion in the bottom water. (3) in each treatment unit, potassium permanganate preoxidation can oxidize nearly 60% of the soluble manganese in the raw water into granular form. The removal rate of total manganese was more than 85%. The oxidation removal of soluble manganese by sand filtration process can be neglected. When the influent total manganese concentration of raw water is at 0.3mg/L, the total manganese concentration in effluent is only 0.01 mg / L and the total removal rate is 90 mg / L through the combined process of potassium permanganate preoxidation and high-density sedimentation tank sand filtration, and the manganese element in the wastewater mainly exists in the form of soluble state. It was found that with the increase of coagulant dosage, the turbidity of the supernatant and CODX / Mnwere decreased first and then increased, while the contents of ammonia-nitrogen and manganese remained unchanged. When the dosage of coagulant is 20mg/L, the turbidity and COD- tir mn content are the lowest. The coagulation experiment by mixing the wastewater and raw water in a certain proportion shows that the ammonia nitrogen and manganese content of the supernatant after sedimentation increase greatly with the increase of the reflux ratio of the production wastewater.
【學(xué)位授予單位】：安徽建筑大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：X703

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 郭慶奮;洪思讓;陳小嶸;王開彥;;泉州市2002—2014年水源水水質(zhì)監(jiān)測(cè)分析[J];海峽預(yù)防醫(yī)學(xué)雜志;2016年04期

2 袁秋紅;;某水廠錳超標(biāo)處理實(shí)例[J];化工管理;2016年23期

3 黃波;劉家春;;長(zhǎng)江經(jīng)濟(jì)帶的錳“暴露”——長(zhǎng)江干流錳污染狀況分析[J];水利水電快報(bào);2015年10期

4 穆丹琳;徐慧;肖峰;王東升;段晉明;蔡穎輝;;給水污泥特性及混凝劑調(diào)理對(duì)其的影響研究[J];中國(guó)給水排水;2015年13期

5 卜潔瑩;王在剛;王志軍;;從給水污泥回收鋁鹽混凝劑與資源化利用研究[J];中國(guó)給水排水;2015年07期

6 任伯幟;劉科家;馬宏璞;周紅濤;鄭諧;;基于SWAT模型的金屬礦區(qū)雨水徑流中錳污染負(fù)荷分析[J];環(huán)境污染與防治;2014年11期

7 陳環(huán)宇;魏宗元;何曉芳;張慧慧;周曉燕;裘尚德;柳景青;胡寶蘭;樓莉萍;;給水管網(wǎng)中污染物在管垢上的累積和釋放[J];環(huán)境科學(xué)學(xué)報(bào);2015年10期

8 汪洋;黃廷林;文剛;;地下水中氨氮、鐵、錳的同步去除及其相互作用[J];中國(guó)給水排水;2014年19期

9 李金成;劉俊峰;張慧英;劉繼偉;夏文香;;生物除錳濾池啟動(dòng)中微生物的接種及培養(yǎng)研究[J];給水排水;2014年S1期

10 潘獻(xiàn)輝;吳蕓芳;王曉楠;;水處理藥劑產(chǎn)品標(biāo)準(zhǔn)現(xiàn)狀及發(fā)展建議[J];中國(guó)給水排水;2014年10期

相關(guān)博士學(xué)位論文 前1條

1 李金成;負(fù)載錳氧化物濾料對(duì)高錳地下水處理技術(shù)研究[D];中國(guó)海洋大學(xué);2011年

相關(guān)碩士學(xué)位論文 前5條

1 潘艷秋;給水廠廢水污泥回收處理技術(shù)研究[D];東北師范大學(xué);2009年

2 李仁波;污泥陶粒的制備及其在廢水處理中的應(yīng)用研究[D];山東大學(xué);2008年

3 徐俊;強(qiáng)化混凝與吸附去除水中微量重金屬小試研究[D];哈爾濱工業(yè)大學(xué);2007年

4 袁德玉;地表水除錳技術(shù)的生產(chǎn)性應(yīng)用研究[D];武漢大學(xué);2005年

5 郭雪松;地表水廠石英砂濾料黑化成因及控制技術(shù)研究[D];湖南大學(xué);2003年

，

本文編號(hào)：1850807