本文選題：單過硫酸氫鉀復合粉 + 飲用水消毒　； 參考：《湖南大學》2015年碩士論文

【摘要】：消毒工藝是飲用水處理核心工藝之一,選擇一種廣譜、高效、低毒的消毒劑具有非常重要的工程意義。單過硫酸氫鉀復合粉是一種新型消毒劑,有著高效的殺菌能力,基本沒有氯化副產物的產生。本文以長沙市二水廠砂濾工藝出水為試驗水樣,考察了單過硫酸氫鉀復合粉的消毒效果及其可能產生的副產物。首先,基于DPD分光光度計法,研究了溫度、光照和消毒劑濃度對其有效氯的影響。發(fā)現當消毒劑濃度一定時,隨著溫度的升高,有效氯峰值濃度不斷增大,但增大的幅度較小。消毒劑中有效氯的濃度達到最大值的時間介于30min至1h之間,且高濃度的該消毒劑中有效氯濃度達到最大值的時間要快于低濃度。環(huán)境溫度一定時,隨著消毒劑濃度不斷增大,其有效氯的濃度也不斷增大,但增大的幅度不斷減小。光照能夠促進消毒劑中有效氯濃度增大,即加快其鏈式反應速度。其次,通過控制溫度、光照和消毒劑濃度,考察了單過硫酸氫鉀復合粉的消毒性能。發(fā)現隨著消毒劑濃度增加和環(huán)境溫度升高,試驗水樣中菌落總數和總大腸菌群的去除率不斷增大。光照能夠增強該消毒劑的消毒效果,即有光環(huán)境對以上兩種菌的去除率比無光環(huán)境高約1~16%。經過12h反應,菌落總數的恢復率較低,總大腸菌群沒有出現恢復,說明該消毒劑有著良好的持續(xù)消毒能力。接著,對該消毒劑產生的消毒副產物進行了測定,發(fā)現其消毒后基本不產生我們所已知的一些有毒副產物。最后,通過對比分析幾種常見消毒方式的成本,認為該消毒劑在水耗、電費和人力成本方面具有一定優(yōu)勢。綜上所述,單過硫酸氫鉀復合粉有著良好的消毒殺菌效果,基本不產生我們所已知的副產物,隨著不斷推廣使用,其藥劑和設備成本勢必會大幅降低,是未來較為理想的一種消毒方式。
[Abstract]:Disinfection is one of the core processes for drinking water treatment. It is of great engineering significance to select a broad spectrum, high efficiency and low toxicity disinfectant. Potassium hydrogen monosulfate compound powder is a new disinfectant with high germicidal ability and no chlorination by-products. In this paper, the disinfection effect of potassium hydrogen sulfate compound powder and its possible by-products were investigated with the sand filtration process of Changsha No. 2 Water Plant as the experimental water sample. Firstly, based on DPD spectrophotometer, the effects of temperature, light and disinfectant concentration on available chlorine were studied. It was found that when the concentration of disinfectant was constant, the peak concentration of available chlorine increased with the increase of temperature, but the range of increase was small. The time of maximum concentration of available chlorine in disinfectant was between 30min and 1h, and the time of maximum concentration of available chlorine in high concentration disinfectant was faster than that in low concentration. With the increasing of the disinfectant concentration, the available chlorine concentration of the disinfectant increases with the constant ambient temperature, but the increasing range is decreasing. Light can promote the increase of available chlorine concentration in disinfectant, that is, accelerate the chain reaction speed. Secondly, the disinfection performance of potassium bisulfate compound powder was investigated by controlling temperature, illumination and disinfectant concentration. It was found that with the increase of disinfectant concentration and environmental temperature, the total number of colonies and the removal rate of total coliform bacteria in the test water increased continuously. Light could enhance the disinfection effect of the disinfectant, that is, the removal rate of the above two bacteria in the light environment was about 110% higher than that in the non-light environment. After 12 h reaction, the recovery rate of the total number of bacteria was low, and the total coliform group did not recover, which indicated that the disinfectant had a good ability of continuous disinfection. Then, the disinfection by-products produced by the disinfectant were determined, and it was found that the disinfectant did not produce some known toxic by-products after disinfection. Finally, by comparing and analyzing the cost of several common disinfection methods, it is concluded that the disinfectant has some advantages in water consumption, electricity consumption and labor cost. To sum up, potassium persulfate composite powder has a good disinfection and sterilization effect, basically does not produce the by-products we know, with the continuous use, its pharmaceutical and equipment costs will be significantly reduced. It is an ideal way of disinfection in the future.
【學位授予單位】：湖南大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TU991.25

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