本文選題：再生水回用 + 兩級(jí)曝氣生物濾池��； 參考：《華中科技大學(xué)》2013年碩士論文

【摘要】：熱電廠一直是工業(yè)用水的大戶，實(shí)現(xiàn)再生水回用是充分利用熱電廠水資源的有效途徑。襄陽熱電廠污水處理站目前采用DAT-IAT以及生物接觸氧化工藝，尾水不能達(dá)到《城鎮(zhèn)污水處理廠污染物排放標(biāo)準(zhǔn)》(GB18918—2002)一級(jí)B標(biāo)準(zhǔn)，尚不能直接回用，需要進(jìn)行提標(biāo)改造，使尾水達(dá)到再生水出水要求，而為了防止氨氮對(duì)銅管的腐蝕，回用水中氨氮濃度必須控制在1mg/L以下。本研究在襄陽熱電廠現(xiàn)場(chǎng)進(jìn)行，選用兩級(jí)BAF和MBR進(jìn)行動(dòng)態(tài)小型對(duì)比試驗(yàn)，為污水處理工藝的提標(biāo)改造和再生水回用工程設(shè)計(jì)和運(yùn)行提供技術(shù)支撐。 本試驗(yàn)用襄陽熱電廠污水處理站的原水作為試驗(yàn)裝置進(jìn)水，分別比較了兩級(jí)BAF和MBR在啟動(dòng)階段的運(yùn)行狀況；比較了兩種工藝在穩(wěn)定運(yùn)行階段，不同進(jìn)水負(fù)荷條件下以及不同溶解氧濃度條件下，兩種工藝對(duì)COD、氨氮、TN、TP、SS去除效果。進(jìn)行了兩種工藝基于污染物去除相關(guān)性的綜合出水水平分析。研究表明： 啟動(dòng)階段，兩種工藝都采用人工接種污泥，然后進(jìn)行悶曝。在進(jìn)水同為0.5L/h條件下，兩種工藝對(duì)于COD、氨氮、TN以及SS都可以達(dá)到出水水質(zhì)要求，TP的去除沒有達(dá)標(biāo)。 在穩(wěn)定運(yùn)行階段，考察了進(jìn)水負(fù)荷分別為0.5L/h、1.0L/h、1.5L/h的情況以及DO濃度從1.5~8mg/L之間變化時(shí)對(duì)于兩種工藝的影響研究。兩級(jí)曝氣生物濾池最優(yōu)運(yùn)行條件為：進(jìn)水負(fù)荷為1.0L/h，DO為2~5mg/L。膜生物反應(yīng)器最優(yōu)運(yùn)行條件為：進(jìn)水負(fù)荷為0.5L/h，DO為3~5mg/L。 本文基于COD、TN、氨氮出水值的相關(guān)性，引入因子分析模型，對(duì)兩種工藝分別進(jìn)行分析，得到3個(gè)指標(biāo)相互影響所形成的綜合出水水平作為評(píng)判水質(zhì)優(yōu)劣標(biāo)準(zhǔn)。 綜合比較，兩級(jí)曝氣生物濾池相比較膜生物反應(yīng)器啟動(dòng)更為迅速，對(duì)于污染物的去除效果更好，也更為穩(wěn)定，因而在再生水回用工程中，兩級(jí)曝氣生物濾池優(yōu)于膜生物反應(yīng)器。
[Abstract]:Thermal power plant has always been a major user of industrial water, and it is an effective way to make full use of water resources of thermal power plant to reuse reclaimed water. At present, the wastewater treatment station of Xiangyang Thermal Power Plant adopts DAT-IAT and biological contact oxidation process. The tailing water can not meet the first class B standard of pollutants discharge Standard of Municipal sewage treatment Plant (GB18918-2002) and cannot be directly reused, so it needs to be upgraded. In order to prevent the corrosion of copper pipe by ammonia nitrogen, the concentration of ammonia nitrogen in recycled water must be controlled below 1 mg / L. This study was carried out in Xiangyang Thermal Power Plant. Two stages BAF and MBR were selected to carry out dynamic small scale contrast test, which provided technical support for the improvement of wastewater treatment process and the design and operation of recycling project. Using raw water from wastewater treatment station of Xiangyang Thermal Power Plant as influent water, the two stages BAF and MBR were compared in start-up stage, and the two processes were compared in stable operation stage. Under different influent loading conditions and different dissolved oxygen concentrations, the removal effects of two processes on COD, TNN TPSS were studied. The comprehensive effluent level analysis of two processes based on the correlation of pollutant removal was carried out. The results showed that both processes were inoculated with sludge and then exposed. Under the same influent of 0.5L / h, the removal of TP from COD, NH3-N TN and SS could not meet the requirement of effluent water quality. In the stable operation stage, the influence of the influent load of 0.5 L / h, 1.0 L / h, 1.5 L / h and the variation of do concentration from 1.5 mg / L to 8 mg / L on the two processes were investigated. The optimal operating conditions of two-stage biological aerated filter are as follows: the influent load is 1.0 L / h, do is 2 mg / L. The optimal operating conditions of the membrane bioreactor are as follows: the influent load is 0.5 L / h and the do is 3 mg / L. In this paper, based on the correlation of effluent value of CODN and NH3-N, factor analysis model was introduced to analyze the two processes, and the comprehensive effluent level formed by the interaction of three indexes was obtained as the criterion to judge the quality of the effluent. Compared with membrane bioreactor, two-stage biological aerated biofilter is more efficient and stable than membrane bioreactor, so it is better than membrane bioreactor in reclaimed water reuse project.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU991.4

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本文編號(hào)：2044634