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近年来东德研制了一种水泵射流曝气装置(Schnbrunn)(如图1)与目前一般采用的曝气原理不同,它的曝气方式和布气密度以波义耳-马略特定律为基础。按照空气提升原理,通过水气混合的方式使曝气池中获得较高流量选用了这种装置后,离心泵的使用寿命(60000转/时)比空压机(10000转/时)长;运转及管理费用低;噪音干扰亦较空压机小,并不产生油污染。按照上述原理,在中心管中气-水混合速度为:用上式求出气泡的绝对上升速度:V_S+V_(G(y))利用qL《qW的关系,得出气水混合的密度。
In recent years East Germany has developed a water pump jet aeration device (Schnbrunn) (Figure 1) and the current general aeration principle is different, its aeration method and the gas density is based on the Boyle-Marlow specific law. . According to the principle of air lift, the high flow rate in the aeration tank is achieved through water and gas mixing. After this device is selected, the service life of the centrifugal pump (60000 rpm) is longer than that of the air compressor (10,000 rpm); Operating and management costs are low; noise interference is also smaller than air compressors and does not produce oil pollution. According to the above principle, the air-water mixing speed in the center pipe is: using the formula above to find the absolute rising speed of the air bubble: V_S+V_(G(y)) The relationship between qL and qW is used to obtain the air-water mixture density.