摘要：含油廢水是一種常見的、能給人類社會帶來較嚴重的環境污染，隨著當前石油業的快速發展，含油廢水的污染問題日益嚴峻，其中對環境的污染也日益嚴重。含油廢水的來源很廣，主要來源于石油工業中石油的加工、提煉、儲存及運輸；機械制造業加工過程中產生的軋鋼水、冷卻潤滑液等乳化油廢水；運輸工業中洗車、鐵路機務段的洗油罐等排放的含油廢水；另外餐飲業、食品加工業、紡織業及其他制造業的廢水中也含有大量的油。國內外非常關注對含油廢水的處理。因此，含油廢水處理技術成為了當前研究的熱點。

　　　氣浮工藝利用高度分散的微氣泡作為載體，粘附廢水中的懸浮物，使其密度小于水而上浮到水面，以實現固液分離的過程。氣浮工藝的除油效率高、處理速度快、運行安全可靠，是一種經濟實用的除油技術，具有很好的應用前景。

    本課題以氣浮法處理含油廢水為研究對象，調研、探討了氣浮除油系統的工藝和運行狀況，首次系統分析了各種因素對除油效率的影響。該研究成果可以為氣浮除油系統提供理論依據，為氣浮除油系統的科學研究提供實驗手段，旨在推動含油廢水，特別是工業含油廢水以及城市污水系統的處理，為保護水體環境，提高學術水平等方面均具有重要意義。

　　　本論文通過合理實驗，詳細研究了聚硅鐵（PSF）和粘土作為浮選劑處理含油廢水的混凝凈化效果，主要結論如下：

　　　1、從水樣中NH3-N、NO2--N、NO3--N三者含量的變化，我們可以發現在水樣中投加了浮選劑后，有機氮轉化為氨氮、氨氮接著轉化為亞硝酸氮、隨后亞硝酸氮又轉化為硝酸氮，水樣中氮元素循環暢通。

　　　2、從溶液的電導率、濁度、pH、COD等值的對比實驗可以得知，粘土作為浮選劑更加優于聚硅鐵。

關鍵詞：含油廢水，氣浮，浮選劑

Abstract：Oily waste water is a common, and It can bring to human society more serious environmental pollution.With the current rapid development of the oil industry, oily wastewater pollution becomes a very serious problem, including pollution of the environment are becoming increasingly serious. A wide source of oily waste water, mainly from the oil industry in the oil processing, refining, storage and transport; mechanical manufacturing process rolling produced water, cooling lubricants and other emulsified oil wastewater; transport industry, car washing, railway locomotive depot washing tanks and other oily wastewater discharge; other food and beverage industry, food processing, textile and other manufacturing waste water also contains a lot of oil. We are very concerned about the treatment of oily wastewater.Therefore, the oily waste water treatment technology has become the focus of current research. 

    Flotation process uses decentralized micro-bubbles as a carrier, the adhesion of suspended solids in waste water, making it less dense than water and float to the surface in order to achieve solid-liquid separation process. Flotation process degreasing efficiency, processing speed, safe and reliable operation, is an economical and practical oil removal technology, with good prospects.     The topics to flotation treatment of oily wastewater as the research object, It degreasing systems research flotation process and operating conditions, the first systematic analysis of various factors on the oil removal efficiency. The flotation results can provide theoretical basis for oil removal system for the flotation oil removal system to provide the experimental means of scientific research, to promote wastewater. Especially in the industrial oily wastewater and urban sewage treatment system for the protection of water environment, improve the academic level and so on are of great significance. 

    Reasonable test of this thesis, a detailed study of poly ferrosilicon (PSF) and clay as a flotation agent in the coagulation treatment of oily waste water purification, the main conclusions are as follows: 

1.Water samples from the NH3-N、NO2--N、NO3--N content of the three changes, we can find in water samples by adding a flotation agent, the organic nitrogen into ammonia nitrogen, ammonia nitrogen and then into Nitrite nitrogen, nitrite nitrogen and subsequently converted to nitrate nitrogen, nitrogen cycle in water flow. 

2.From the solution conductivity, turbidity, pH, COD equivalent of the comparative experiments can see that as a flotation agent more than clay poly ferrosilicon.

Key words: wastewater, flotation, flotation agent