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以醛鞣革屑为吸附剂,去除模拟单宁废水中的水解类粟木单宁或缩合类落叶松单宁,考察吸附剂用量、pH值、吸附时间、吸附温度等因素对2类单宁去除效果的影响。结果表明:随着吸附剂用量的增加,醛鞣革屑对2类单宁的去除率逐渐增加到最大。栗木单宁在30℃、pH值2、3h条件下的去除率较大;落叶松单宁的去除率在吸附条件为35℃、pH值6、5.5h时较大。醛鞣革屑对废水中落叶松单宁的去除率要高于栗木单宁。
Aldehyde tanned shavings as adsorbent to remove simulated tannin hydrolyzed millet tannin or condensed type of larch tannin, adsorbent dosage, pH value, adsorption time, adsorption temperature and other factors on the type 2 tannin Remove the effect of the effect. The results showed that with the increase of the amount of adsorbent, the removal rate of tannin from aldehyde tanned shavings increased gradually to the maximum. Chestnut tannin removal rate was higher under the conditions of 30 ℃ and pH value of 2, 3h. The removal rate of larch tannin was larger under the conditions of 35 ℃ and pH value of 6 and 5.5h. Aldehyde tanning debris on the removal of larch tannin wastewater higher than chestnut tannin.