本文選題：二氧化氯　切入點(diǎn)：發(fā)生器　出處：《哈爾濱工業(yè)大學(xué)》2013年碩士論文

【摘要】：作為第四代飲用水消毒劑，二氧化氯具有高效、廣譜、與水中有機(jī)物反應(yīng)不生成有機(jī)氯代物的特點(diǎn)。近年來，許多水廠開始使用二氧化氯作為水處理劑，整體使用效果良好。但是，二氧化氯無機(jī)副產(chǎn)物易超標(biāo)的問題普遍存在，目前尚無有效的解決方案，阻礙了二氧化氯作為新一代飲用水消毒劑的推廣和發(fā)展。 在查閱相關(guān)文獻(xiàn)以及實(shí)地調(diào)研的基礎(chǔ)上，本論文以二氧化氯無機(jī)副產(chǎn)物的三個(gè)來源，二氧化氯自身分解過程、發(fā)生器產(chǎn)生二氧化氯過程以及二氧化氯與水體作用過程為研究思路。 研究了二氧化氯自身分解過程中無機(jī)副產(chǎn)物的產(chǎn)生規(guī)律，分析了溫度、初始濃度、光照、pH對二氧化氯衰減速率及副產(chǎn)物生成規(guī)律的影響，結(jié)果表明二氧化氯自身分解對無機(jī)副產(chǎn)物的產(chǎn)生量影響較小，影響二氧化氯自身分速率的因素中光照強(qiáng)度pH溫度初始濃度，閉光是減緩二氧化氯自身分解的最有效措施。 研究了兩種不同原理二氧化氯發(fā)生器產(chǎn)生二氧化氯無機(jī)副產(chǎn)物的規(guī)律，分析發(fā)生器運(yùn)行條件對二氧化氯收率、二氧化氯純度、氯酸鹽產(chǎn)生量的影響，，結(jié)果表明，R11法發(fā)生器本身對氯酸鹽和亞氯酸鹽的產(chǎn)生量無影響；R5法發(fā)生器在鹽酸與氯酸鈉體積比為1:1.2，反應(yīng)溫度65℃的條件下運(yùn)行，可以有效降低氯酸鹽的產(chǎn)生量；R5法發(fā)生器增加母液循環(huán)母液裝置后，氯酸鹽產(chǎn)生量降低了25%；增加氣液分離裝置后可以從根本上解決R5法發(fā)生器產(chǎn)生氯酸鹽的弊端。 研究了二氧化氯溶液用于原水預(yù)處理過程中無機(jī)副產(chǎn)物的產(chǎn)生規(guī)律，結(jié)果表明，混合二氧化氯用于原水預(yù)處理，氯氣的存在會(huì)促進(jìn)水體中的亞氯酸鹽轉(zhuǎn)化為氯酸鹽，可以通過增大二氧化氯純度減少氯酸鹽的產(chǎn)生量。純二氧化氯用于原水預(yù)處理，副產(chǎn)物產(chǎn)生量取決于二氧化氯投加量，受其他因素影響較小。當(dāng)ClO2投加量為0~1.0mg/L時(shí)，亞氯酸鹽生成量為ClO2投加量的0.7倍，當(dāng)ClO2投加量為1.0~3.0mg/L時(shí)，亞氯酸鹽生成量為ClO2投加量的0.5倍，當(dāng)ClO2投加量為3.0mg/L~5.0mg/L時(shí)，亞氯酸鹽生成量為ClO2投加量的0.4倍。純二氧化氯預(yù)氧化除錳時(shí)，ClO2和混凝劑投加間隔在10min內(nèi)為宜，投加量為原水錳含量的3倍左右；除藻時(shí)，投加點(diǎn)宜選在混凝劑投加點(diǎn)之后，投加量在1mg/L以內(nèi)。
[Abstract]:As the fourth generation of drinking water disinfectant, chlorine dioxide has the advantages of high efficiency, broad spectrum, characteristic reaction and organic matter in the water does not produce chlorinated organic compounds. In recent years, many waterworks started using chlorine dioxide as a water treatment agent, the use effect is good. However, widespread chlorine dioxide inorganic by-products to exceed the standard problem, there is no effective solution that hindered the promotion and development of chlorine dioxide as a new generation of drinking water disinfectant.
On the basis of consulting relevant literature and field research, this paper takes three sources of chlorine dioxide by-products, decomposition process of chlorine dioxide, generator chlorine dioxide generation process and chlorine dioxide interaction with water as the research train of thought.
Study on the regularity of inorganic chlorine dioxide itself in the process of decomposition byproducts, analysis of temperature, initial concentration, light, the effect of pH on the formation and decay of chlorine dioxide by-product reduction rate. The results show that the decomposition of chlorine dioxide inorganic by-products was less affected, factors affecting the rate of chlorine dioxide itself in light intensity pH temperature initial concentration, light is the most effective measures to slow closing its chlorine dioxide decomposition.
Study two different principle of chlorine dioxide generator to produce chlorine dioxide inorganic by-products of purity analysis of chlorine dioxide generator operating conditions on the yield, production of chlorine dioxide, the effects of chlorate results show that R11 has no effect by itself on the generator of chlorate and chlorite produced; R5 generator in hydrochloric acid and sodium chlorate volume ratio for 1:1.2, the reaction temperature is 65 DEG C under the condition of operation, can effectively reduce the production of chlorate; R5 generator device for increasing mother liquor circulation liquor, chlorate production decreased by 25%; increase the drawbacks of gas liquid separation device can fundamentally solve the R5 generator to produce chlorate.
Study of chlorine dioxide solution for generating rules, inorganic raw water pretreatment process of by-products. The results show that the mixing of chlorine dioxide for raw water pretreatment, the presence of chlorine will promote chlorite in water into chlorate, can increase the purity of chlorine dioxide produced less reduction of chlorate. Pure chlorine dioxide for raw water pretreatment, vice the product produced depends on the amount of chlorine dioxide dosage and other factors is small. When the ClO2 dosage is 0~1.0mg/L, chlorite formation was 0.7 times of the dosage of ClO2, when the dosage of ClO2 was 1.0~3.0mg/ L, chlorite formation was 0.5 times of the dosage of ClO2, when the dosage of ClO2 was 3.0mg/L~5.0mg/L, chlorite formation was 0.4 times of the dosage of ClO2. The pure chlorine dioxide pre oxidation of manganese, ClO2 and coagulant dosing interval should be within 10min, the dosage was 3 times the left raw water manganese content Right; when algae removal, the dosing point should be selected after the coagulant dosing point, and the dosage is within 1mg/L.

【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU991.2

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