Multi-stage circulating aerating tower
A technology of aeration and aeration head, applied in sustainable biological treatment, water/sludge/sewage treatment, biological water/sewage treatment, etc. Uneven three-phase mixing and other problems, to achieve the effect of small footprint, reduced footprint and long residence time
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[0024] Example 1: Circulating aeration tower is made of borosilicate glass, inside is equipped with multi-stage guide tube, the size of the aeration tower is: the height of the tower is 1.2 meters, the diameter of the tower body is 10 cm, and there is a guide tube inside. Flow cylinder, the sewage is phenol-acetone industrial sewage, mainly containing phenol, acetone, acetophenone and benzyl alcohol, etc., COD is 1000mg / l, continuous operation at room temperature, the concentration of activated sludge is 3-6g / l, sewage The residence time in the tower is 4-6 hours. The COD of the treated water drops to 122-166, and the COD removal rate is 83.4-87.8%.
Example Embodiment
[0025] Example 2: Loop aeration tower is the same as Example 1. The sewage is the sewage from the polyolefin catalyst workshop, the COD is 1000mg / l, and the continuous operation is adopted at room temperature. The concentration of activated sludge is 3-6g / l. The residence time is 2-4 hours. The COD of the treated water drops to 50-60. The COD removal rate is 94-95%.
Example Embodiment
[0026] Example 3: The size of the multi-stage circulation aeration tower is: the tower height is 1.5 meters, the tower body diameter is 15 cm, and a diversion tube is set inside. The sewage is the comprehensive petrochemical wastewater, and the COD is 1000 mg / l. Continuous operation at room temperature, the concentration of activated sludge is 3g / l, and the residence time of sewage in the tower is 6 hours. The COD of the treated water is reduced to 200. The COD removal rate is 80%.
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