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用接触氧化法处理以生活污水为主所组成的污水,通过对BOD、COD等去除功能的探讨,得到下列结果: 1) BOD、COD都能作为表示曝气池的单位容积负荷的指标,而后者宜于作为设计的基础。 2) 单位容积的水量负荷对BOD、COD的去除率有很大影响。 3) 在BOD、COD的低负荷情况下,水温变化对接触氧化法的功能的影响并没有水量负荷那样大。 4) 对于BOD的去除,下列的经验公式在实际的应用有相当高的可靠性。功能评价用L_R=0.845(1.758/Q~(0.313)·L_0~(0.966)85％合格率设计用L_R=0.679(1.758/Q~(0.313))·L_0~(0.956)或L_0=(0.678×1.758×C_0~(0.313)/E)~(2.882) 5) 对COD的去除利用下列经验公式功能评价用 L_R=0.1888(2.698/Q~(0.443))·L_0~(1.066)设计用(但85％合格率)L_R=0.14(2.698/Q~(0.443))·L_0~(1.066)或L_0=(0.14×2.698×C_0~(0.443)/E)~(2.653)但是,当生活污水的COD在10毫克/升以下时,难于进行生物处理。
The contact oxidation method is used to treat wastewater composed mainly of domestic sewage. Through the discussion of BOD, COD, and other removal functions, the following results are obtained: 1) Both BOD and COD can be used as indicators of the unit volume load of the aeration tank, and then It is appropriate to use as a basis for design. 2) The unit volume of water load has a great influence on the removal rate of BOD and COD. 3) In the case of low loads of BOD and COD, the effect of water temperature changes on the function of the contact oxidation method is not as large as the water load. 4) For the removal of BOD, the following empirical formula has a very high reliability in practical applications. L_R = 0.845 for functional evaluation (1.758/Q ~ (0.313) · L_0 ~ (0.966) 85% pass rate design with L_R = 0.679 (1.758/Q ~ (0.313)) · L_0 ~ (0.956) or L_0 = (0.678 × 1.758×C_0~(0.313)/E)~(2.882) 5) The removal of COD was evaluated using the following empirical formula: L_R=0.1888(2.698/Q~0.443)·L_0~(1.066) for design evaluation (but 85 % pass rate) L_R=0.14 (2.698/Q~0.443)·L_0~(1.066) or L_0=(0.14×2.698×C_0~(0.443)/E)~(2.653) However, when the COD of domestic sewage is Below 10 mg/l, biological treatment is difficult.