本文關(guān)鍵詞：硫自養(yǎng)反硝化土壤滲濾反應(yīng)器處理生活污水的研究　出處：《中國地質(zhì)大學(xué)(北京)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 生活污水 自養(yǎng)反硝化 硫 硫鐵礦 兼養(yǎng)反硝化

【摘要】：生活污水的過度排放會使水質(zhì)惡化、破壞生態(tài)平衡、危害人類健康。盡管污水處理廠能有效地處理大部分來自城鎮(zhèn)的生活污水,然而大型的污水處理廠造價高、能源消耗與占地面積都很大,在偏遠(yuǎn)農(nóng)村地區(qū)難以廣泛地推廣應(yīng)用,因此處理偏遠(yuǎn)農(nóng)村地區(qū)的生活污水,應(yīng)當(dāng)開發(fā)一種簡單而有效的就地處理系統(tǒng)。本研究結(jié)合了傳統(tǒng)的土壤處理工藝與生物反應(yīng)器工藝,構(gòu)建了一套硫/硫鐵礦自養(yǎng)反硝化土壤滲濾生物反應(yīng)器(SIBSAD/SIBPAD)系列,具體的研究結(jié)果如下:對于石英砂、沸石、活性炭與火山巖這些天然多孔濾料的吸附實驗表明,活性炭對COD,沸石對氨氮與硝氮、火山巖對總磷的具有良好的吸附性能。動態(tài)吸附柱實驗結(jié)果表明反應(yīng)器對氨氮的吸附效果最好,吸附率達(dá)到了53.46%,吸附飽和時間超過9 h。SIBSAD/SIBPAD系列在120天的模擬生活污水實驗期(包括14 d實際污水實驗期)內(nèi),SIBSAD的COD去除率達(dá)到86.32%,氨氮去除率為92.56%,總磷去除率為77.40%,其中ANS的硝氮去除率為89.74%;而SIBPAD的COD去除率為87.14%,氨氮去除率為89.65%,總磷去除率82.58%,其中ANS的硝氮去除率為80.72%。SIBSAD對硝氮的去除能力要高于SIBPAD,但是SIBSAD的出水p H最終降為3.47,且硫酸根濃度最高可達(dá)到了145.46 mg L-1;SIBPAD的總磷去除率要高于SIBSAD,其出水p H保持在7以上,且硫酸根最高濃度僅為63.22 mg L-1。SIBSAD中的反硝化作用主要來自硫桿菌屬Thiobacillus,而且還存在大量產(chǎn)硫酸的硫氧化菌屬如Sulfobacillus、Acidiphilium、Thiomonas以及Acidithiobacillus,造成出水的p H值持續(xù)降低與硫酸根濃度過量,生物多樣性單一。而SIBPAD中的反硝化作用不僅來自硫桿菌屬Thiobacillus,更多的是依靠異養(yǎng)反硝化菌Thauera與Halomonas,這表明其反硝化實際上是一個自養(yǎng)與異養(yǎng)結(jié)合的兼養(yǎng)進(jìn)程,它保證了出水p H保持穩(wěn)定且硫酸根生成量小,還擁有較高的生物多樣性。SIBSAD/SIBPAD系列具有實際應(yīng)用前景,為就地處理生活污水領(lǐng)域提供了一種合適的備選方案,同時也為我們開發(fā)自養(yǎng)反硝化與土壤處理的結(jié)合工藝提供了理論基礎(chǔ)。
[Abstract]:The excessive discharge of domestic sewage will aggravate the water quality, destroy the ecological balance and harm the human health. Although most effectively from the town sewage treatment plant sewage treatment plant can, however, the high cost of energy consumption and covers an area of large sewage treatment are large, in remote rural areas is difficult to be widely used in remote rural areas, so the treatment of domestic sewage, in situ treatment system should be the development of a simple and effective. This study combines the technology of soil treatment and conventional bioreactors, and constructs a set of sulfur autotrophic denitrification / pyrite leaching of soil biological reactor (SIBSAD/SIBPAD) series, the specific research results are as follows: to show that the adsorption experiment of quartz sand, zeolite, activated carbon and volcano rocks of these natural porous media, on activated carbon COD zeolite has good adsorption properties of ammonia nitrogen and nitrate nitrogen, total phosphorus of the volcano rock. The experimental results of dynamic adsorption column show that the adsorption efficiency of ammonia nitrogen is the best, the adsorption rate is 53.46%, and the adsorption saturation time is over 9 h. SIBSAD/SIBPAD series on the 120 day of the experimental period of simulated sewage (including 14 d experimental period, the actual sewage) SIBSAD COD removal rate reached 86.32%, the removal rate of ammonia nitrogen was 92.56%, the total phosphorus removal rate was 77.40%, the nitrate removal rate of ANS was 89.74% SIBPAD; and the removal rate of COD is 87.14%, the removal rate of ammonia nitrogen as of 89.65%, the total phosphorus removal rate of 82.58%, the nitrate removal rate of ANS was 80.72%. SIBSAD removal of nitrate is higher than that of SIBPAD, but the SIBSAD of the effluent P H eventually reduced to 3.47, and the sulfate concentration can reach a maximum of 145.46 mg L-1 SIBPAD; the total phosphorus removal rate is higher than SIBSAD, the effluent P H remained above 7, and the highest concentration of sulfate was only 63.22 mg L-1. In SIBSAD denitrification mainly from Thiobacillus Thiobacillus, but also has produced a large amount of sulfate sulfur oxidizing bacteria genera such as Sulfobacillus, Acidiphilium, Thiomonas and Acidithiobacillus, resulting in the water P H value decreased with excessive sulfate concentration, single biological diversity. In SIBPAD, the denitrification not only from Thiobacillus Thiobacillus, more is to rely on Thauera and Halomonas of heterotrophic denitrifying bacteria, suggesting that the denitrification is actually a combination of facultative autotrophic and heterotrophic processes, which ensure the effluent P H remained stable and sulfate formation, also has high biological diversity. The SIBSAD/SIBPAD series has practical application prospects, which provides a suitable alternative for on-site treatment of domestic sewage, and also provides a theoretical basis for developing the combined process of autotrophic denitrification and soil treatment.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X799.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前3條

1 葉良濤;左勝鵬;;脫氮硫桿菌自養(yǎng)反硝化及其影響因素研究進(jìn)展[J];環(huán)境科學(xué)與管理;2011年03期

2 ;A New Soil Infiltration Technology for Decentralized Sewage Treatment:Two-Stage Anaerobic Tank and Soil Trench System[J];Pedosphere;2008年03期

3 張燕飛;彭安安;楊宇;柳建設(shè);邱冠周;;嗜酸兼性異養(yǎng)菌Acidiphilium sp.DX1-1的分離、特征及其浸礦行為(英文)[J];Transactions of Nonferrous Metals Society of China;2013年06期

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本文編號：1340089