摘要
根据瓜尔豆胶在生产食品添加剂的过程中产生的废水COD的值高达216000mg/l的特点,分别用如下方法进行处理①调pH=6．84。按0．5%质量比加入活性炭吸附剂,静止20天,此时去除率为87．7%；②用饱和硫酸铝2mL+适量的聚丙烯酰胺絮凝,去除率为36．5%；③原液先蒸馏出1/4体积后在釜液中按3%的质量比加入Ca(OH)_2,计算去除率为89．6%④利用铁炭屑以5：1的质量比形成微电池的方法作用两小时后再按3%的质量比加Ca(OH)_2絮凝,此条件下去除率高达91．7%。经过比较得出第四种方法是最经济有效的,对该特种废水起到了很好的预处理作用。
The waster water value of COD can be up to 216000mg/L during the process of producing food additives using Guar gum. According to this distinguishing feature, the waster water can be treated by the follow methods respectively： ①Add the activated carbon into the waster water by the mass ratio of 0.5 percent （pH = 6.84 ）, then keep the waster water static for 20 days. It is 87.7 % to get rid of leading at this moment; ②Floceulate with saturated aluminium sulphate （2mL） and sufficicent polypropylene acyl amine, and it is 36.5% to get rid of leading; ③Add Ca（OH）2 into the liquid in cauldron according to 3% mass ratio after original liquid is distilled untill the liquid vlolume is left to 3/4, and it is 89.6% to get rid of leading; QUlilize the iron charcoal bits by 5：1 quality to form local dement after 2 hours then add Ca （OH）2 to flocculate according to 3% mass ratio, it expects that the rate is up to 91.7%. Compared to the three formers, the fourth kind of method is the most economic and most effectual process which plays very important role of treating this special waste water.
出处
《环境科学与管理》
CAS
2006年第5期120-122,共3页
Environmental Science and Management
关键词
废水处理
吸附
絮凝
微电解
waster water treatment
absorption
flocculation
local dement
