【摘要】：在常溫條件下,利用序批式反應(yīng)器和序批式生物膜反應(yīng)器的組合工藝(SBR+SBBR)處理低C與N質(zhì)量濃度比(ρ(C)/ρ(N))城市污水。原水先進(jìn)入SBR反應(yīng)器,通過厭氧-好氧交替運(yùn)行實(shí)現(xiàn)高效除磷,其出水進(jìn)入SBBR反應(yīng)器進(jìn)行強(qiáng)化脫氮處理。SBBR反應(yīng)器通過接種短程硝化污泥和厭氧氨氧化生物膜,控制適宜溶解氧(DO)質(zhì)量濃度,實(shí)現(xiàn)全程自養(yǎng)脫氮。系統(tǒng)穩(wěn)定運(yùn)行期間,原水COD質(zhì)量濃度為206 mg/L,總氮質(zhì)量濃度為51.52 mg/L,磷酸鹽質(zhì)量濃度為4.09 mg/L,出水的總氮和磷酸鹽質(zhì)量濃度分別為10.7 mg/L和0.17 mg/L。研究結(jié)果表明:利用該組合工藝處理低碳氮比(ρ(C)/ρ(N)=4)城市污水,不外加碳源條件下,出水氮磷均可到達(dá)一級A標(biāo)準(zhǔn)。系統(tǒng)穩(wěn)定運(yùn)行的關(guān)鍵在于維持SBBR反應(yīng)器合理的DO質(zhì)量濃度(0.2~0.5 mg/L),持續(xù)抑制亞硝酸鹽氧化細(xì)菌的增殖,避免硝酸鹽的積累。
[Abstract]:At room temperature, (SBR SBBR), a combined process of sequencing batch reactor and sequencing batch biofilm reactor, was used to treat municipal wastewater with low concentration ratio of C to N (p (C) / p (N). The raw water first entered the SBR reactor, and the effluent was fed into the SBBR reactor for enhanced nitrogen removal. The suitable concentration of dissolved oxygen (DO) was controlled by inoculating short-cut nitrification sludge and anammoxidation biofilm to realize autotrophic denitrification in the whole process. During the stable operation of the system, the mass concentration of COD in raw water is mg/L, the mass concentration of total nitrogen is 51.52 mg/L, the mass concentration of phosphate is 4.09 mg/L, the mass concentration of total nitrogen and phosphate is 10.7 mg/L and 0.17 mg/L., respectively. The results show that the effluent nitrogen and phosphorus can reach the first class A standard without carbon source when the combined process is used to treat municipal wastewater with low carbon / nitrogen ratio (p (C) / p (N) = 4). The key to the stable operation of the system lies in maintaining a reasonable concentration of DO in SBBR reactor (0.2 鈮，

本文編號：2510264