用PVA包埋法固定化细胞去除洗衣粉废水中LAS的研究

A Study on the Treatment of LAS in Detergent Waste Water with PVA Entrapped Immobilized Cells.

经富集培养得到降解LAS的细菌菌系,在24小时内可将40—50mg/L的LAS分解90％以上。用PVA-硼酸化法包埋该菌系得到的固定化细胞,在处理洗衣粉废水中LAS时的最适pH为5.35—7.70,最适温度为25℃—35℃。在1L反应器中的间歇式连续运行表明:PVA小球/废水(V/V)=30％,进水LAS 40—70mg/L,HRT=3h条件下,LAS去除率可达90％以上。

A population of enriched and cultured bacteria can degrade 90% of the LAS with an initial concentration of 40-50mg/L in 24hr. The optimum pH and temperature for LAS removal in detergent waste water with the immobilized bacterial population obtained by entrapping the bacteria with PVA-boric acid were found to be from 5.35 to 7.70 and from 25℃ to 35℃, respectively. When PVA-pellets/waste water (V/V) was 30%, LAS concentration in influent was from 40mg/L to 70mg/L and HRT was 3 hr, the rate of LAS removal could exceed 90% in 1 L batch reactor operation.