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Design and Experimental Study on 3-phase-separator in EGSB Reactor

Author: HuangJian
Tutor: ZhouYuanXiang
School: Hefei University of Technology
Course: Environmental Engineering
Keywords: Expanded granular sludge bed (EGSB) reactor 3-phase-separator design Suspended solid separating efficiency
CLC: X703.2
Type: Master's thesis
Year: 2005
Downloads: 752
Quote: 1
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Abstract


Five modified 3-phase-separators of EGSB reactor were designed on the basis of the mathematical description of the wastewater anaerobic trearment process in upflow reactor.Experiments demonstrated that separating efficiency was high and reached to 93.5%~95%, When SS was 2.95g/L, gas was 0.6L/h and upflow rate was 6.4m/h, the separating rateof type A and type B separator reached to the highest; For type C and type D separator, SS was 4.42g/L, gas was 0.3L/h and upflow rate was 6.4m/h; While the condition for type E separator was that SS was 4.42g/L, gas was 0.3L/h and upflow rate was 6.0m/h.When low upflow rate was 0.8~4.8m/h, the separating rate was high and exceeded to 82% for type A and type D separator; At middle upflow rate(4~9.6m/h), the separating rate for type B, type C and type E was up to 86%. When SS was 2.95 g/L, the separating rate was high and exceeded to 80% for type A and type B separator; When SS was 4.42 g/L, the separating rate reached to 83% for type C, type D and type E separator; When SS was 5.89 g/L, the separating rate reached to 84.3% for type D and type E separator. Five separators’ effect was excellent when the gas was 0.3L/h and 0.6L/h.The study on the subsidence aera and return crack indicated that the separating efficiency increased gradually with the increasing of the subsidence aera, and the range of increasing in high upflow rate was more than low upflow rate. When the upflow rate was 0.8m/h, the separating efficiency of type D separator increased 0.5%, the rate increased 3.82% at 9.6m/h. When the return crack was 20~30mm, the efficiency of type A separator exceeded to 92.5%; Type B separator reached to 92.2% at 10~20mm.

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CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > General issues > Wastewater treatment and utilization
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