摘要
在生化需氧量 (BOD5)的测定中 ,稀释倍数的估计是否适当至关重要。该文根据废水生物处理可行性的判断标准———BOD5/CODcr比值的波动范围 ,将其分为三个区间 ,经过数学推导 ,得出各区间的稀释倍数 ,即n1=0 .57COD/d ,n2 =1.3COD/d ,n3=1.2 3COD/d ,其中d为当天稀释水的溶解氧。这三个稀释倍数可覆盖BOD5整个波动范围。由此 ,根据化学需氧量 (CODcr)可以简捷地确定出稀释倍数 。
A simple and rapid method of estimation of the dilution ratio in BOD 5 determination based on the CODcr values is proposed in this paper. It is proposed that the variable range of the BOD 5/CODcr ratio, which is a judging standard of the feasibility of bio treatment of waste water, is divided into three regions, and the dilution ratio of each region can be calculated by the following formulas: n 1=0.57CODcr/ d , n 2=1.3CODcr/ d and n 3=1 23CODcr/ d , where d is the concentration of dissolved oxygen in the dilution water of the very day. It is evident the calculation of the values of n (the dilution ratio) is quite easy and rapid. The effectiveness and accuracy of the determination of BOD 5 is significantly improved.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2001年第5期206-208,共3页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
