本文關(guān)鍵詞：基于虹吸曝氣系統(tǒng)的設(shè)計(jì)及對(duì)景觀水污染治理的研究　出處：《安徽工程大學(xué)》2017年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 景觀水 虹吸曝氣生物濾池 氣水比 氨氮 COD_(Mn)

【摘要】：景觀水作為人們生活中最常見(jiàn)的一種水體,與我們的生活息息相關(guān),然而景觀水的污染卻越來(lái)越普遍。景觀水遍布城市各個(gè)區(qū)域,但污染程度相對(duì)較低,在治理的時(shí)候應(yīng)選擇工藝簡(jiǎn)單,費(fèi)用較低的處理技術(shù)。物理方法治標(biāo)不治本,化學(xué)方法容易產(chǎn)生化學(xué)殘留,生物的方法標(biāo)本兼治,是長(zhǎng)治久安之法�；谏锓ㄌ幚砭坝^水的思路,本文自主研發(fā)了一種虹吸曝氣生物濾池(Siphon Biological Aerated Filter SBAF)處理景觀水。SBAF相對(duì)于傳統(tǒng)曝氣生物濾池最大的特點(diǎn)就是省略了風(fēng)機(jī)等曝氣設(shè)備。其利用水流勢(shì)能進(jìn)行曝氣,通過(guò)虹吸的進(jìn)水方式做到了進(jìn)水進(jìn)氣的一體化。實(shí)驗(yàn)以安徽工程大學(xué)校園景觀水為實(shí)驗(yàn)原水,以陶粒為填料,通過(guò)對(duì)SBAF水力負(fù)荷、氣水比、濾料高度等為運(yùn)行參數(shù),探索了 SBAF對(duì)景觀水中的氨氮,COD_(Mn)以及濁度去除效果,得出SBAF的最佳運(yùn)行參數(shù)。并在最佳運(yùn)行參數(shù)下通過(guò)改變氨氮以及COD_(Mn)濃度,考察SBAF的耐沖擊負(fù)荷能力。此外還對(duì)濾池的反沖洗方式做了探討。主要結(jié)論如下:通過(guò)對(duì)SBAF的理論推導(dǎo)得出了 SBAF的理論氣水比只與液面落差以及濾池深度有關(guān),即氣水比為(L-H)/H,L是高位水池與底部濾池的落差,H為濾池的深度。并通過(guò)氣水比驗(yàn)證試驗(yàn),驗(yàn)證了這一猜想。另外在實(shí)驗(yàn)室通過(guò)對(duì)進(jìn)水及出水的溶解氧濃度做對(duì)比,驗(yàn)證了 SBAF具有增加溶解氧的效果。本實(shí)驗(yàn)采用自然掛膜的方式,通過(guò)在校園水域構(gòu)筑SBAF實(shí)驗(yàn)系統(tǒng),掛膜時(shí)間為15天。在SBAF正常穩(wěn)定運(yùn)行之后,通過(guò)改變SBAF的各個(gè)水力負(fù)荷,氣水比,濾料高度等運(yùn)行條件,進(jìn)而尋找最佳的運(yùn)行參數(shù)。在確定SBAF最佳運(yùn)行參數(shù)之后中,通過(guò)改變SBAF的進(jìn)水沖擊負(fù)荷可以看出,SBAF對(duì)進(jìn)水氨氮以及COD改變的適應(yīng)性很強(qiáng)。對(duì)于氨氮的沖擊負(fù)荷,出水的氨氮以及COD_(Mn)的去除率都比較好。對(duì)于有機(jī)負(fù)荷,COD_(Mn)的去除率趨勢(shì)有所上升,而氨氮的去除率趨勢(shì)卻是逐漸下降的。但是氨氮的最低去除率也達(dá)到了 61%。以上結(jié)果能說(shuō)明SBAF抗沖擊負(fù)荷能力較強(qiáng)。由于SBAF的特殊結(jié)構(gòu),決定了其特殊的反沖洗方式,通過(guò)機(jī)械振動(dòng)的方式進(jìn)行反沖洗,依舊能夠使生物膜脫落,達(dá)到對(duì)濾料進(jìn)行沖洗的效果。SBAF的一個(gè)反沖洗周期為15天,SBAF反沖洗后恢復(fù)能力較快。一天后,COCMn的去除率以及明顯回升,并且反沖洗后的COD_(Mn)的去除率以及氨氮的去除率大于反沖洗前的去除率。最后進(jìn)行了經(jīng)濟(jì)可行性分析,以安徽工程大學(xué)校園水域?yàn)槔?通過(guò)與BAF工藝的對(duì)比,能知道SBAF具有更低的基建成本已經(jīng)更低的運(yùn)行費(fèi)用。
[Abstract]:As a kind of landscape water water is most common in people's lives, and our lives, however, landscape water pollution is more and more widespread. Throughout the various regions of the city landscape water, but the pollution degree is relatively low, at the time of governance should choose has the advantages of simple process, low cost processing technology. Physical methods palliatives the method is easy to produce chemical, chemical residue, biological methods of specimen and cure, is a long period of stability of the law. Ideas based on biological treatment of landscape water, this paper developed a siphon biological aerated filter (Siphon Biological Aerated Filter SBAF.SBAF) treatment of landscape water characteristics compared with traditional BAF is the biggest fan omitted the use of flow aeration equipment. The potential for aeration, the way through the water inlet siphon water inlet. Do the integration experiment in Anhui engineering university campus landscape water The raw water, with ceramsite filler, the SBAF hydraulic loading, gas water ratio, height of filter material as the operating parameters, to explore the SBAF of landscape water ammonia, COD_ (Mn) and turbidity removal effect, the optimum operation parameters of SBAF. And in the optimum operating parameters by changing the ammonia nitrogen and COD_ (Mn) the concentration of shock resistant capacity of SBAF. In addition to the filter backwash mode is discussed. The main conclusions are as follows: through theoretical derivation of the SBAF theory that SBAF gas water ratio is only related with the liquid drop and the filter depth, namely air / water ratio (L-H) of /H, L is high pool and at the bottom of the filter gap, H filter and the ratio of gas and water depth. Through the test, to verify this conjecture. In addition in the laboratory by the dissolved oxygen concentration of influent and effluent water to do comparison, verify that the SBAF has increased the dissolved oxygen effect. This experiment adopts natural Hanging film, through the construction of SBAF experimental system in campus waters, film-forming time was 15 days. After SBAF normal stable operation, through the hydraulic load change SBAF, gas water ratio, height of filter material and other operating conditions, and then find the optimal operating parameters. After determining the optimum operation parameters of SBAF, through the water inlet the impact of load change of SBAF can be seen, SBAF and COD on a very strong ammonia water adaptability to change. For the impact load of ammonia water, ammonia nitrogen and COD_ (Mn) removal rate are better. The organic load, COD_ (Mn) removal rate rising trend, while the ammonia nitrogen removal rate trend is gradually decreased. But the lowest ammonia nitrogen removal rate reached 61%. the above results can explain SBAF strong anti shock loading capability. Because of the special structure of SBAF, determines the special backwashing method, by mechanical vibration. For backwashing, still can make biofilm shedding, achieve a backwash cycle of washing effect of.SBAF on media for 15 days, SBAF after backwash recovery faster. A day later, the removal rate of COCMn and rebounded significantly, and after backwashing COD_ (Mn) and the removal rate of ammonia nitrogen removal the rate is greater than the removal rate before rinsing. Finally analyzes the economic feasibility of the campus, waters Engineering University of Anhui as an example, by comparing with the BAF technology, can know the operation cost of construction cost of SBAF is lower is lower.

【學(xué)位授予單位】：安徽工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：X703

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