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氣泡產(chǎn)生方法
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產(chǎn)生微氣泡的方法，常用的有曝氣氣浮法和溶氣氣浮法兩種。
氣浮
另外還有 電解法為不常用。
電解法
電解法是向污水中通入5~10V的直流電，從而產(chǎn)生微小氣泡，但由于電耗大電極板極易結(jié)垢，所以主要用于中小規(guī)模的工業(yè)廢水處理。
曝氣氣浮法
曝氣氣浮法又稱分散空氣法，是在氣浮池的底部設(shè)置微孔擴(kuò)散板或擴(kuò)散管，壓縮空氣從板面或管面以微小氣泡形式逸出于水中。也有在池底處安裝葉輪，輪軸垂直于水面，而壓縮空氣通到葉輪下方，借葉輪高速轉(zhuǎn)動(dòng)時(shí)的攪拌作用，將大氣泡切割成為小氣泡。
溶氣氣浮法
溶解在水中的氣體，在水面氣壓降低時(shí)可以從水中逸出。有兩種方法：①使氣氣浮設(shè)備的空間呈為真空狀態(tài)，處在常壓下的水流進(jìn)池后即釋出微氣泡，稱真空溶氣法；②空氣加壓溶入水中達(dá)到飽和，溶氣水流減壓進(jìn)入氣浮池時(shí)即釋出微氣泡，稱加壓溶氣法。后者較為常用。加壓溶氣水可以是所處理水的全部或一部分，也可以是氣浮池出水的回流水，回流水量占所處理水量的百分比稱回流比，是影響氣浮效率的重要因素，須由試驗(yàn)確定。加壓溶氣法的設(shè)備有加壓泵、溶氣罐和空氣壓縮機(jī)等。溶氣罐為承壓鋼筒，內(nèi)部常設(shè)置導(dǎo)流板或放置填料。溶氣罐出水通過減壓閥或釋放器進(jìn)入氣浮設(shè)備。
我公司專業(yè)生產(chǎn)銷售氣浮機(jī)刮吸泥機(jī)氣浮氣浮設(shè)備砂濾罐本文由www.atpet.cn提供
Micro bubble method, commonly used have aeration gas air flotation and dissolved air flotation.
Air flotation
And electrolysis method is not commonly used.
Electrolytic process
Electrolytic process is to sewage zhongtong into 5 ~ 10 v direct current, resulting in a tiny air bubbles, but because power consumption big plate electrode fouling extremely easily, so it is mainly used for small and medium-sized industrial wastewater treatment.
Aeration gas float
Aeration gas float is also called the dispersed air method, is set in the bottom of the floating pool microporous diffusion plate or diffusion tube, the compressed air from the surface or tube surface in the form of tiny air bubbles escape out of the water. Also has is installed at the bottom impeller, shaft perpendicular to the surface of the water, and below the compressed air to the impeller, borrow the high-speed rotating impeller stirring effect, will be cut into small bubbles big bubbles.
Dissolved air air flotation
The gas dissolved in water, the water can escape from the water pressure decreases. There are two ways: (1) gets the floating shelf space for vacuum, pressure in the flow of water into the pool after the release of the micro air bubble, called vacuum absorption method; (2) air dissolving in water saturated pressure, reduced pressure in the gas dissolved air water floating pool or release the micro air bubble, called pressurized dissolved air method. The latter is more commonly used. Pressurized dissolved air water may be the whole or any part of the treated water, can also be a gas float pool water backflow water, return water percentage of processed water reflux ratio, is one of the important factors affect the efficiency of air flotation, shall be determined by test. Have the equipment pressure pump pressurized dissolved air method, dissolved gas and air compressor, etc. Dissolving tank as the confined steel cylinder, the internal often set the guide plate or place packing. Dissolving tank water through the relief valve or release into the gas pool.
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