Air bubble circulation flow type hollow fibrous membrane separating device
A circulating flow and separation device technology, which is applied in the direction of semi-permeable membrane separation, membrane technology, permeation/dialysis water/sewage treatment, etc., can solve the problems of high operating cost and attenuation of permeation flux in the separation process, and save the number of power equipment , reduce energy consumption and avoid secondary pollution
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Embodiment 1
[0024] Embodiment 1: use 1200 silk external pressure type hollow fiber membrane elements, according to figure 1 In the process shown in , carbon ink and tap water were mixed as a simulated experimental system. Under the condition of compressed air consumption of 0.4 cubic meters per hour, the pressure of the raw material was adjusted by controlling the opening of the gas discharge valve C, and the permeation flux was measured. Variation relationship of operating pressure difference ( image 3 ). The water after membrane separation is clear and transparent, and the color of carbon ink is completely removed to achieve the purpose of purification.
Embodiment 2
[0025] Embodiment 2: use 1200 silk external pressure type hollow fiber membrane elements, according to figure 1 In the process shown in , carbon ink and tap water were mixed as a simulated experimental system. Under the condition of compressed air consumption of 0.8 cubic meters per hour, the pressure of the raw material was adjusted by controlling the opening of the gas discharge valve C, and the permeation flux was measured. Variation relationship of operating pressure difference ( Figure 4 ). The water after membrane separation is clear and transparent, and the color of carbon ink is completely removed to achieve the purpose of purification.
Embodiment 3
[0026] Embodiment 3: use 800 silk external pressure type hollow fiber membrane elements, according to figure 1 In the process shown in , the activated sludge was mixed with tap water as the experimental system. Under the condition that the compressed air consumption was 0.4 cubic meters per hour, the pressure of the raw material was adjusted by controlling the opening of the gas discharge valve C, and the permeation flux was measured as a function of Variation relationship of operating pressure difference ( Figure 5 ). The water after membrane separation is clear and transparent, which greatly reduces the chroma and turbidity of the raw water and achieves the purpose of purification. Some analysis indicators are shown in Table 1.
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