臭氧生物活性炭技术对工厂化豆芽生产回收水的净化效果研究

A Study of Effect of Ozone-biological Activated Carbon Process in Treating Circulating Water of Factory Germination Process

为了研究臭氧生物活性炭技术对豆芽工厂化生产过程回收水中有机物及部分无机物的去除效果,及不同水质对豆芽品质的影响,模拟豆芽工厂化生产工艺,用不同水样进行发芽试验,对不同水质及豆芽品质进行方差及相关性分析。结果表明,本试验处理工艺对总磷、COD、总有机碳去除率分别为50.90%、60.19%、67.51%,对无机盐铁、硝酸盐、亚硝酸盐、硫酸盐、磷酸盐的去除率分别为80.68%、22.84%、55.17%、21.46%、42.67%。豆芽的产量、下胚轴长、下胚轴粗及根长与水中总磷、COD、总有机碳及硝酸盐、亚硝酸盐、磷酸盐含量呈极显著负相关(P<0.01)。臭氧生物活性炭技术可有效去除工厂化豆芽生产回收水中的有机物、部分无机物,净化水各项指标基本达到《生活饮用水卫生标准》,回收水及净化出水均某种程度上降低了豆芽的品质,不同水质对豆芽品质的影响较大。

In order to study the effect of ozone-biological activated carbon process in removing organism and part of the inorganic of circulating water of factory germination process,and the impact of different kinds of water on the characteristics of bean sprouts,the author simulated factory germination process,utilized various water for cultivating bean sprouts.Then the water quality and the characteristics of bean sprouts were analyzed with the methods of correlation and variance analysis.The results showed that ozone-biological activated carbon process was very effective.The average removal rates of total phosphorus,COD,total organic carbon were 50.90%,60.19%,67.51% respectively.Among the inorganic,the average removal rates of iron,nitrate,nitrite,sulfate,phosphate were 80.68%,22.84%,55.17%,21.46%,42.67% respectively.The sprouts yield,length of hypocotyl,diameter of hypocotyl and length of root correlated significantly negative with the content of total phosphorus,COD,total organic carbon,nitrate,nitrite and phosphate of the circulating water （P0.01）.Ozone-biological activated carbon process was very effective in removing organism and part of the inorganic of circulating water of factory germination process.All the indexes completely met the new drinkable water standard of China.Circulating water and its purified water lowered the characteristics of bean sprouts to some extent.The impact of different kinds of water on the qualities of bean sprouts was significant.