亚硫酸制浆废液COD_B与BOD_5的相关性研究

Relationships between COD_B and BOD_5 of sulphurous acid pulping wastewater

根据对稀释配制的亚硫酸制浆废液(中段水)进行曝气,测定不同时间CODcr的值,通过数据图解处理法得到可生化化学耗氧量(CODB)。经与同批样品实测BOD5值进行换算,对其平均值结果进行方差分析。结果表明:误差结果为9.26%,即由作图法测定的CODB值与BOD5测试法的值非常接近,对亚硫酸制浆废液的生化处理研究具有实际意义。

Exposed sulphurous acid pulping wastewater diluted to the air, the chemical oxygen demand （CODCr） values in different times were determined,and the biodegradable chemical oxygen demand （CODB） was obtained by data illustration method. CODB value was transformed with the biological oxygen demand （BOD5） measured value from same samples and the mean values were analyzed by variance analysis. The results indicated that the average error was 9.26 %. That is to say, CODB value with data illustration method was similar to that of BOD5 determination method, which was significant to biochemistry treatment of sulphurous acid pulping wastewater.