本文選題：化工園區(qū) + 污水廠��； 參考：《哈爾濱工業(yè)大學(xué)》2015年碩士論文

【摘要】：隨著工業(yè)的發(fā)展,越來越多的化工合成產(chǎn)品進(jìn)入到我們的生活之中。這些產(chǎn)品在給我們的生活帶來便利的同時(shí),卻在其生產(chǎn)過程產(chǎn)生大量對環(huán)境有害的物質(zhì),尤其是產(chǎn)業(yè)集中區(qū)內(nèi),工業(yè)企業(yè)密集、工業(yè)污水種類多,同時(shí)隨著園區(qū)內(nèi)企業(yè)生產(chǎn)產(chǎn)品周期的不同,園區(qū)廢水排放水量、水質(zhì)具有不確定性,使得園區(qū)污水處理廠進(jìn)水波動(dòng)性極強(qiáng)而使現(xiàn)有工藝不能穩(wěn)定達(dá)標(biāo)。本文以江蘇省污水處理廠A為依托,通過調(diào)研了解污水處理廠A的廢水來源、處理水量,并通過對污水處理廠A各構(gòu)筑物運(yùn)行情況進(jìn)行診斷,在對污水處理廠進(jìn)行診斷基礎(chǔ)之上通過小試對污水處理廠SBR工藝及化學(xué)除磷進(jìn)行優(yōu)化,同時(shí)結(jié)合污水處理廠水解池構(gòu)造重新設(shè)計(jì)小試循環(huán)式水解反應(yīng)器,并對其處理性能進(jìn)行研究。此外,本文研究了臭氧、鐵碳微電解、Fenton三種物化方法對污水廠A進(jìn)水預(yù)處理的最佳反應(yīng)條件及三種物化對廢水中污染物結(jié)構(gòu)的改變。最后,研究了鐵碳微電解、復(fù)合式循環(huán)水解及SBR組合工藝對污染物的去除效果。SBR運(yùn)行優(yōu)化采用單一好氧、厭氧好氧、好氧厭氧三種方案,結(jié)果表明SBR最佳運(yùn)行方式為進(jìn)水1.5h,進(jìn)水開始攪拌0.5h,曝氣1.5h,沉淀1h,排水1h。實(shí)驗(yàn)研究了前端除磷、同步除磷及末端除磷,結(jié)果表明末端化學(xué)輔助除磷效果最好,當(dāng)化學(xué)除磷劑聚合鋁鐵投加系數(shù)?=3時(shí),出水能夠保證在0.5mg/L一下,同時(shí)可以保持對COD去除率30%以上。對比了投加復(fù)合填料前后循環(huán)式水解反應(yīng)器對污染物的去除情況,研究表明,投加復(fù)合填料可以明顯提高水解反應(yīng)器的處理效果,復(fù)合水解對COD去除率提高到30%以上。對復(fù)合式循環(huán)水解反應(yīng)器水力停留時(shí)間的研究表明,當(dāng)水力停留時(shí)間為10h,反應(yīng)器對廢水可生化性改變效果最好,使廢水B/C平均由0.242提高到0.283。循環(huán)式水解與SBR聯(lián)用實(shí)驗(yàn)表明,復(fù)合式循環(huán)水解與SBR聯(lián)用抗沖擊負(fù)荷能力較強(qiáng),出水總磷單純依靠生物處理不能穩(wěn)定達(dá)標(biāo)。當(dāng)進(jìn)水受到?jīng)_擊時(shí),通過投加碳源,廢水中生物活性可以逐漸得到恢復(fù)。通過單因素實(shí)驗(yàn)研究了臭氧、微電解及Fenton三種物化方法的影響因素,同時(shí)對比了O3、微電解、Fenton三種物化預(yù)處理方法在其最佳反應(yīng)條件下對廢水的處理效果及對有機(jī)物結(jié)構(gòu)的改變。如果對COD的去除及B/C的提高都有要求,建議選用微電解。對鐵碳微電解、復(fù)合式循環(huán)水解及SBR聯(lián)用工藝對污染物去除情況進(jìn)行了監(jiān)測,結(jié)果表明該工藝對氨氮達(dá)標(biāo)率為100%,該聯(lián)合工藝在運(yùn)行中不需投加化學(xué)除磷劑,出水總磷達(dá)標(biāo)率為100%;COD和總氮在正常情況下可以穩(wěn)定達(dá)標(biāo),但受進(jìn)水沖擊的影響,會出現(xiàn)超標(biāo)現(xiàn)象,組合工藝出水COD綜合達(dá)標(biāo)率為87.5%,對總氮達(dá)標(biāo)率為75%。
[Abstract]:With the development of industry, more and more chemical synthetic products come into our life. While bringing convenience to our daily life, these products produce a large number of environmentally harmful substances in their production processes, especially in industrial concentration zones, where industrial enterprises are dense and industrial sewage types are numerous. At the same time, with the different production cycle of enterprises in the park, the quantity of wastewater discharge and the water quality are uncertain, which makes the fluctuation of influent water in the wastewater treatment plant of the park extremely strong and the existing process can not reach the standard stably. Based on the investigation of sewage treatment plant A in Jiangsu Province, this paper investigates the wastewater source and water quantity of sewage treatment plant A, and diagnoses the operation of each structure of sewage treatment plant A. Based on the diagnosis of sewage treatment plant, the SBR process and chemical phosphorus removal in sewage treatment plant were optimized by small scale test. At the same time, combined with the structure of hydrolysis pool of sewage treatment plant, the small scale circulating hydrolysis reactor was redesigned. And its processing performance was studied. In addition, three physicochemical methods, ozone and iron-carbon micro-electrolysis (Fenton), have been studied in this paper. The optimum conditions for pretreatment of influent A in wastewater treatment plant and the change of pollutants structure in wastewater by three kinds of physicochemical methods are studied. Finally, the removal efficiency of pollutants by iron-carbon microelectrolysis, combined cyclic hydrolysis and SBR process was studied. The single aerobic, anaerobic and aerobic schemes were used to optimize the operation of SBR. The results showed that the optimal operation mode of SBR was as follows: influent 1.5h, influent stirring 0.5h, aeration 1.5h, sedimentation 1h, drainage 1h. The experimental results show that the terminal chemically assisted phosphorus removal is the best. When the addition coefficient of the chemical dephosphorization agent is 3, the effluent can be guaranteed to be below 0.5mg/L. At the same time, the removal rate of COD can be kept above 30%. The removal of pollutants in the circulating hydrolysate reactor before and after adding the compound filler was compared. The results showed that the treatment effect of the hydrolytic reactor could be improved obviously by adding the compound filler, and the removal rate of COD by the compound hydrolysis could be increased to more than 30%. The study on the hydraulic retention time of the compound circulating hydrolysis reactor shows that when the hydraulic retention time is 10 h, the reactor has the best effect on the change of the biochemical property of the wastewater, and the average B / C ratio of the wastewater is increased from 0.242 to 0.283. The combined test of cyclic hydrolysis and SBR showed that the combined use of compound cyclic hydrolysis and SBR had strong impact load resistance, and the total phosphorus of effluent could not reach the standard by biological treatment alone. When the influent is impacted, the biological activity of wastewater can be gradually restored by adding carbon source. The influencing factors of three physicochemical methods, ozone, microelectrolysis and Fenton, were studied by single factor experiments. The effects of three physicochemical pretreatment methods, O _ 3 and O _ 3, and micro-electrolysis on the treatment of wastewater and the structure of organic matter were compared under the optimum reaction conditions. If the removal of COD and the improvement of B / C are required, microelectrolysis is recommended. The removal of pollutants was monitored by iron-carbon microelectrolysis, combined cyclic hydrolysis and SBR. The results showed that the rate of reaching the standard of ammonia and nitrogen was 100, and the chemical phosphorus remover was not needed in the operation of the combined process. The effluent total phosphorus reaches the standard rate of 100% and the total nitrogen can reach the standard stably under the normal condition, but under the influence of the influent impact, there will appear the phenomenon of exceeding the standard. The comprehensive standard rate of COD of the combined process is 87.5%, and the total nitrogen reaches the standard rate of 7575%.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X703.1

【參考文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 任立清;鐵碳微電解-Fenton法預(yù)處理某制藥廢水的實(shí)驗(yàn)研究[D];重慶大學(xué);2014年

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本文編號：1863969