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href="http://www.yashikanews.com/a/hydtzb70.html">曝氣設備與方法</a>曝氣裝置，又稱為空氣擴散裝置，是活性污泥處理系統的重要設備，按曝氣方式可以將其分為<a data-mid="201" href="http://www.yashikanews.com/a/hydtzb52.html">鼓風曝氣裝置</a>和表面曝氣裝置兩種。 1、曝氣裝置的技術性能指標： ① 動力效率（Ep）：每消耗1度電轉移到混合液中的氧量（kgO2/kw.h）； ② 氧的利用率（EA）：又稱氧轉移效率，是指通過鼓風曝氣系統轉移到混合液中的氧量占總供氧量的百分比（%）； ③ 充氧能力（R0）：通過表面<a data-mid="475" href="http://www.yashikanews.com/a/hydtzb71.html">機械曝氣裝置</a>在單位時間內轉移到混合液中的氧量（kgO2/h）。 2、鼓風曝氣裝置：鼓風曝氣系統由鼓風機、空氣輸送管道以及曝氣裝置所組成。鼓風曝氣裝置可分為：（微）小氣泡型、中氣泡型、大氣泡型、水力剪切型、水力沖擊型、等 ① （微）小氣泡型曝氣裝置：由微孔透氣材料（陶土、氧化鋁、氧化硅或尼龍等）制成的擴散板、擴散盤和擴散管等；氣泡直徑在2mm以下（氣泡在200?m以下者，為微孔）；氧的利用率較高，EA=15?25%，動力效率在2 kgO2/kw.h以上；缺點：易堵塞，空氣需經過濾處理凈化，擴散阻力大。 ② 中氣泡型曝氣裝置：氣泡直徑為2?6mm。1) 穿孔管：2) 新型中氣泡型曝氣裝置： ③ 水力剪切型空氣擴散裝置：利用裝置本身的構造特點，產生水力剪切作用，將大氣泡切割成小氣泡，增加氣液接觸面積，達到提高效率的目的。如：定螺旋曝氣器等。 ④ 水力沖擊型曝氣器：射流曝氣：分為自吸式和供氣式——自吸式射流曝氣器由壓力管、噴嘴、吸氣管、混合室和出水管等組成；EA = 20%；噪音小，無需鼓風機房；一般適用于小規模污水廠。 3、機械曝氣裝置又稱表面曝氣裝置 ① 曝氣的原理： 1) 水躍——曝氣機轉動時，表面的混合液不斷地從周邊被拋向四周，形成水躍，液面被強烈攪動而卷入空氣； 2) 提升——曝氣機具有提升作用，使混合液連續地上下循環流動，不斷更新氣液接觸界面，強化氣、液接觸； 3) 負壓吸氣——曝氣器的轉動，使其在一定部位形成負壓區，而吸入空氣。分類：按轉動軸的安裝形式，可分為豎軸式和橫軸式兩大類。 ② 豎軸式機械曝氣裝置：泵型葉輪曝氣器、K型葉輪曝氣器、倒傘型葉輪曝氣器和平板型葉輪曝氣器等。 1) 由葉片、進氣孔、引氣孔、上壓罩、下壓罩和進水口等部分組成；對于泵型葉輪曝氣器，其充氧量和軸功率可按下列經驗公式計算：（30）式中 R0——在標準狀態下清水的充氧能力，kgO2/h； N軸——葉輪軸功率，kw； V——葉輪周邊線速度，m/s； D——葉輪公稱直徑，m； K1——池型結構對充氧量的修正系數； K2——池型結構對軸功率的修正系數； 2)呈雙曲線形；浸沒深度為0?10mm；線速度為4?5m/s。 3)由圓錐形殼體及連接在外表面的葉片所組成；轉速在30?60r/min；動力效率為2?2.5 4)由葉片與平板等部件組成；葉片與平板半徑的角度在0?25之間；線速度一般在4.05?4.85之間。 ③ 橫軸式機械曝氣裝置：曝氣轉刷、曝氣轉盤等。</p> </dd> </dl> <div class="page_c"> <a title="曝氣的理論基礎與原理" href="http://www.yashikanews.com/a/hydtzb69.html">上一篇：曝氣的理論基礎與原理</a> <a title="機械曝氣裝置" href="http://www.yashikanews.com/a/hydtzb71.html">下一篇：機械曝氣裝置</a> </div> </div> </div> <div class="rel_list"> <div class="rel_list_title">相關新聞</div> <ul> <li> <a href="http://www.yashikanews.com/a/scjbxxa4576.html" title="雙叉聚丙烯酰胺"> 雙叉聚丙烯酰胺 </a> <samp class="n_time">09-05</samp></li><li> <a href="http://www.yashikanews.com/a/jbxxafc-fr.html" title=" 聚丙烯酰胺防潮、防熱"> 聚丙烯酰胺防潮、防熱 </a> <samp 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