本文選題：生物膜 + SBBR反應(yīng)器　； 參考：《東北林業(yè)大學(xué)》2015年碩士論文

【摘要】：城市生活污水、灌溉用水的農(nóng)藥殘留、養(yǎng)殖廢水等富含氮元素的廢水未經(jīng)處理的排放,是造成水體富營(yíng)養(yǎng)化的主要因素,而隨著城市化進(jìn)程的發(fā)展,城市生活污水已經(jīng)占我國(guó)廢水排放的最大比重。傳統(tǒng)生物脫氮工藝存在著處理效率低、能耗高、占地面積大等問(wèn)題,因此,開(kāi)發(fā)新的低碳脫氮工藝,能夠高效脫氮的同時(shí)減少能耗,對(duì)污水處理得長(zhǎng)足發(fā)展具有重要意義。生物膜技術(shù)被認(rèn)為是一種高效的廢水處理方法,與活性污泥法相比具有生物量大、處理能力強(qiáng)、剩余污泥產(chǎn)量少、運(yùn)行管理方便等優(yōu)點(diǎn)。序批式生物膜反應(yīng)器(SBBR)是基于生物膜技術(shù)的一種復(fù)合式生物膜反應(yīng)器,它既繼承了生物膜法的優(yōu)點(diǎn),又結(jié)合了SBR反應(yīng)器的運(yùn)行特點(diǎn)。本研究通過(guò)對(duì)SBBR反應(yīng)器中的填料配置方式進(jìn)行對(duì)比研究,對(duì)SBBR反應(yīng)器進(jìn)行配置優(yōu)化,進(jìn)而利用SBBR反應(yīng)器與上流式生物膜反應(yīng)器的組合,采用半亞硝化-厭氧氨氧化工藝,對(duì)模擬實(shí)際廢水進(jìn)行脫氮效能及系統(tǒng)穩(wěn)定性的分析。首先采用模擬實(shí)際廢水,對(duì)SBBR反應(yīng)器的填料進(jìn)行最佳填充方式及最佳填充率的確定。試驗(yàn)結(jié)果表明,在溫度(29±1)℃、ZH填料填充比為20%的條件下啟動(dòng)反應(yīng)器,固定填充方式掛膜要較自然懸浮方式掛膜早成熟8d。固定填充方式反應(yīng)器COD與氨氮的去除率分別為95.23%和98.07%,自然懸浮填充方式反應(yīng)器COD與氨氮的去除率分別為86.83%和84.01%,可見(jiàn)填料填充固定式要優(yōu)于自然懸浮式。在固定填充方式掛膜條件下,考察了三種不同填充率(20%、40%、60%)對(duì)SBBR反應(yīng)器去除COD和脫氮效果的影響,結(jié)果顯示填充率20%效果最好,其COD去除率為95.23%,是填充率40%和60%的1.10倍和1.04倍：氨氮去除率為98.07%,是填充率40%和60%的1.39倍和1.69倍。采用20%的填料填充比,以固定方式填充對(duì)組合工藝的SBBR反應(yīng)器進(jìn)行啟動(dòng)以實(shí)現(xiàn)半亞硝化。經(jīng)過(guò)122d的污泥培養(yǎng)與42d的掛膜培養(yǎng),體系內(nèi)亞硝化累積率達(dá)93.2%,硝態(tài)氮基本處于檢測(cè)線以下,出水NH4+-N與N02--N的比值為0.71。上流式生物膜反應(yīng)器經(jīng)74d的培養(yǎng)后,ANAMMOX成為體系內(nèi)的優(yōu)勢(shì)反應(yīng),出水NH4+-N和N02-N的平均去除率分別達(dá)到91.03%和86.56%,去除負(fù)荷分別為8.53kg/(m3.d)和9.29kg/(m3·d),氨氮去除量與亞硝態(tài)氮的去除量之比為1.33。將已經(jīng)成功啟動(dòng)的SBBR反應(yīng)器與上流式生物膜反應(yīng)器進(jìn)行耦合,組合工藝出水NH4+-N5mg/L,由于存在硝化反應(yīng)的影響,N02--N出水約為20mg/L, NO3--N出水約為40mg/L。其中半亞硝化對(duì)氨氮轉(zhuǎn)化率為38.51%,ANAMMOX去除的氨氮占全部氮素去除的52.39%。
[Abstract]:The untreated discharge of municipal sewage, pesticide residues in irrigation water and aquaculture wastewater are the main factors that lead to eutrophication of water body, and with the development of urbanization, Municipal domestic sewage has accounted for the largest proportion of wastewater discharge in China. The traditional biological nitrogen removal process has some problems such as low treatment efficiency, high energy consumption and large area. Therefore, it is of great significance to develop a new low carbon denitrification process that can efficiently denitrification and reduce energy consumption, which is of great significance to the rapid development of wastewater treatment. Biofilm technology is considered to be an efficient method for wastewater treatment. Compared with activated sludge process, biofilm has many advantages, such as large biomass, strong treatment capacity, less surplus sludge production, and convenient operation and management. Sequencing batch biofilm reactor (SBBR) is a composite biofilm reactor based on biofilm technology. It not only inherits the advantages of biofilm process, but also combines the operation characteristics of SBR reactor. By comparing and studying the packing configuration in SBBR reactor, the configuration of SBBR reactor was optimized, and then the semi-nitrification-anaerobic ammoxidation process was adopted by the combination of SBBR reactor and upflow biofilm reactor. The nitrogen removal efficiency and system stability of simulated wastewater were analyzed. At first, the best filling method and the best filling rate of the SBBR reactor were determined by simulating the actual wastewater. The results showed that when the filling ratio of ZH filler at (29 鹵1) 鈩，

本文編號(hào)：2070669