摘要:水環境污染已經成為全球重要的環境問題之一。水體污染影響工業生產、增大設備腐蝕、影響產品質量，甚至使生產不能進行下去。水的污染，又影響人類生活，破壞生態，直接危害人的健康，損害很大。

　　　人類日常使用的水受到污染后，通過飲水或食物鏈，污染物進入人體，使人急性或慢性中毒。工農業生產使用的水受到污染后，工業用水必須投入更多的處理費用，造成資源、能源的浪費，食品工業用水要求更為嚴格，水質不合格，會使生產停頓。這也是工業企業效益不高，質量不好的因素。農業使用污水，使作物減產，品質降低，甚至使人畜受害，大片農田遭受污染，降低土壤質量。含有大量氮、磷、鉀的生活污水的排放，大量有機物在水中降解放出營養元素，促進水中藻類叢生，植物瘋長，使水體通氣不良，溶解氧下降，甚至出現無氧層。以致使水生植物大量死亡，水面發黑，水體發臭形成“死湖”、“死河”、“死海”，進而變成沼澤。

　　　本文在系統收集和認真閱讀大量國內外有關資料文獻的基礎上，通過實驗、分析和評述，指出氣浮混凝劑的合理應用技術是凈化水環境的重要技術措施之一。通過改性聚硅鐵投加于污水中后，污水中PH、電導率、TDS、濁度、氮磷含量等指標與原水的比較，來分析這種氣浮混凝劑的性能優點。

　　　本課題旨在對氣浮混凝劑的應用性能，特別是改性聚硅鐵對污水的凈化作用做一定的試驗研究，為未來氣浮混凝劑能更好的應用于水處理工藝做一定的參考依據。

關鍵詞: 水污染治理，氣浮混凝劑，改性聚硅鐵，凈化，實驗研究

Abstract:Water pollution has become a global one of important environmental problems. Water pollution affects industrial production and increase the equipment corrosion, affect the quality of products, and even make production cannot proceed. Water pollution, and influence human life, damage the ecological, directly harmful to people's health, damage greatly.

　　　Human daily use water contaminated water or food chain, through after, pollutants enter human body, make the person acute or chronic poisoning. Industrial and agricultural production use water is polluted, industrial water must be more the treatment cost, causing the waste of resources, energy and food industrial water requirements more stringent, water quality is unqualified, can make production pause. This also is industrial enterprise efficiency is not high, quality is bad factors. Farming USES sewage, make the crop, quality is reduced, and even make human and livestock suffer, farmland contaminated, reducing soil quality. Contains a lot of nitrogen, phosphorus, potassium life sewage discharge, a large number of organic matter degradation in water out nutrition elements, promote the water algae, forested, and plants, make water ventilation adverse maintained, dissolved oxygen drops, appear even anaerobic layer. Massive death to the aquatic plants, water, and water formed a "stinking black death lake", "dead river" and "Dead Sea", then become a swamp.

　　　Based on the system to collect and carefully read plenty of domestic and foreign relevant data, on the basis of literature review through experiment and analysis, and points out that with air-float coagulant the reasonable application of technology is an important technical measures of water environment of one. Through the modified polyethylene ferrosilicon dosing in sewage, sewage PH, conductivity, TDS, turbidity, nitrogen, phosphorus content and index and raw comparison, to analyze this floating coagulant performance advantages.

　　　This project aims to floating coagulant application properties, especially the modified polyethylene ferrosilicon of the sewage purification do certain test for future research, air-float coagulant can better applied in water treatment process to a certain reference.

Key words: water pollution, air coagulant, Modified ferrosilicon, purification, experimental study