【摘要】：自上世紀(jì)60年代,第一個(gè)商用MBR能以開發(fā)利用,如今各式各樣的膜生物處理器已被廣泛應(yīng)用于城市污水處理領(lǐng)域。目前大部分的MBR采用的是微濾膜或者是超濾膜,但是隨著近年污水排放標(biāo)準(zhǔn)的提高,經(jīng)過現(xiàn)有MBR處理后的污水往往達(dá)不到有關(guān)規(guī)定的要求,需要再經(jīng)過納濾或反滲透等技術(shù)的進(jìn)一步處理。本實(shí)驗(yàn)直接將管式納濾膜直接應(yīng)用于膜生物處理器中,配置濃度近似城市污水的實(shí)驗(yàn)室污水,觀察在相似條件下對(duì)超濾MBR與納濾MBR對(duì)于污水的處理效果,探究納濾MBR獨(dú)自運(yùn)行的可行性。結(jié)果如下:(1)針對(duì)COD,不論是超濾MBR還是納濾MBR都很很高的去除率,可以穩(wěn)定在9 5%以上。而且納濾MBR的出水效果要略好于超濾MB R,其受池中有機(jī)物濃度變化的影響更小。而應(yīng)對(duì)進(jìn)水濃度的突然提高時(shí),兩者都表現(xiàn)出很好的適應(yīng)性,出水沒有產(chǎn)生大的波動(dòng)。(2)在好氧池中,氨氮的去除效果都不是很理想。尤其是超濾MBR的出水和反應(yīng)池污水相比并沒有明顯降低,有時(shí)甚至?xí)霈F(xiàn)升高的情況。而納濾MBR的出水雖然會(huì)一直保持低于池中的污水,但是膜去除率也只是在30%左右,而當(dāng)進(jìn)水中氨氮濃度突然提高時(shí),整體去除率有明顯的下降趨勢(shì)。(3)在經(jīng)過前期的波動(dòng)后,在40天的周期內(nèi)MBR的通量雖然都略有下降,但也基本保持穩(wěn)定。但若是停止運(yùn)行的時(shí)間過長(zhǎng)在開啟時(shí)兩者的出水量都會(huì)明顯下降,恢復(fù)效果也不理想。所以短期穩(wěn)定運(yùn)行時(shí),納濾MBR具有可實(shí)施性。
[Abstract]:Since the 1960s, the first commercial MBR can be developed and utilized. Nowadays, a variety of membrane bioprocessors have been widely used in the field of municipal sewage treatment. At present, most of MBR uses microfiltration membrane or ultrafiltration membrane, but with the improvement of sewage discharge standards in recent years, the sewage treated by existing MBR often does not meet the requirements of relevant regulations. Further treatment by nanofiltration or reverse osmosis is required. In this experiment, the tubular nanofiltration membrane was directly applied to the membrane bioprocessor, and the treatment effect of ultrafiltration MBR and nanofiltration MBR on sewage was observed under similar conditions. Explore the feasibility of nanofiltration MBR operating alone. The results are as follows: (1) for COD, the removal rate of both ultrafiltration MBR and nanofiltration MBR is very high, which can be stabilized at more than 9.5%. Moreover, the effluent effect of nanofiltration MBR was slightly better than that of ultrafiltration MB R.It was less affected by the change of organic matter concentration in the tank. In response to the sudden increase of influent concentration, both of them showed good adaptability, and the effluent did not fluctuate greatly. (2) in aerobic tank, the removal effect of ammonia nitrogen was not very good. Especially, the effluent of ultrafiltration MBR is not obviously lower than that of reactor sewage, and sometimes it even increases. Although the effluent of nanofiltration MBR will always be lower than that of the wastewater in the pond, the membrane removal rate is only about 30%, and when the concentration of ammonia nitrogen in the influent suddenly increases, the overall removal rate has an obvious downward trend. (3) after the early period of fluctuation, Although the flux of MBR decreased slightly in the 40-day cycle, it also remained stable. However, if the time of stopping operation is too long, the water output of both will obviously decrease, and the recovery effect is not satisfactory. Therefore, nanofiltration MBR can be implemented in short-term stable operation.
【學(xué)位授予單位】：天津工業(yè)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 敬雙怡;劉楊;張列宇;李衛(wèi)平;于玲紅;;納濾膜在直飲水終端系統(tǒng)中的應(yīng)用[J];水處理技術(shù);2016年10期

2 李存玉;馬峗;陳濤;李紅陽;彭國平;;基于納濾分離優(yōu)勢(shì)優(yōu)化丹參注射液的生產(chǎn)濃縮工藝[J];國際中醫(yī)中藥雜志;2016年06期

3 范益群;漆虹;;陶瓷納濾膜制備與應(yīng)用研究進(jìn)展[J];化工進(jìn)展;2016年06期

4 蔣莎妮;周慧倩;王闖;王葉峰;曾惠明;;柑桔廢液中果膠的超濾提取及助凝劑制備研究[J];廣州化工;2016年10期

5 曹相生;孫延芳;孟雪征;;浸沒式MBR工藝的設(shè)計(jì)要點(diǎn)分析[J];中國給水排水;2016年08期

6 李國軍;姜媛媛;王瑩;李鄭武;;超濾技術(shù)在蛋白質(zhì)分離純化中應(yīng)用[J];生物技術(shù)世界;2016年03期

7 王天昱;;飲用水及其膜凈化[J];科技風(fēng);2016年03期

8 劉國華;陳燕;范強(qiáng);徐相龍;王洪臣;;溶解氧對(duì)活性污泥系統(tǒng)的脫氮效果和硝化細(xì)菌群落結(jié)構(gòu)的影響[J];環(huán)境科學(xué)學(xué)報(bào);2016年06期

9 ;荷電膜實(shí)驗(yàn)室創(chuàng)立[J];鹽業(yè)與化工;2015年08期

10 孫寶紅;笪曉薇;范益群;;納濾膜材質(zhì)對(duì)高含鹽體系中有機(jī)物截留性能的影響研究[J];膜科學(xué)與技術(shù);2015年02期

，

本文編號(hào)：2158168