摘要
本文通过对水蕹菜净化含银废水的室内外静、动态试验研究得出:(1)水蕹菜对离子态银(Ag^+)的去除速率高于对络合态银[Ag(S_2O_3)_2]^(3-)的去除速率即 K_(Ag)+>K[Ag(S_2O_3)_2]^(3-);(2)水蕹菜对银的净化率 R 与污水停留时间 t 呈指数函数关系(R=Ae^(B,t),A、B为常数,B<0),其表面去除负荷 P_S 则与 t 呈幂函数关系(P_S=At^B,B<0);(3)试验证明水蕹菜是生物净化含银废水的优良品种之一。
Results of static and dynamic simulated test to purify the waste- water containing silver by Ipomoea aquatica indicated.1)Removal rate of Ipomoca aquatica to Ag+ is higher than removal rate to [Ag(S_2O_3)_2]^(3-), or K_(Ag~)+K[Ag(sS:O_]^(3-).2)Relation between purification rate(R)to[Ag· (S_2O_3)_2]^(3-) and detention time(t)is R=Ae^(B/t)(B<0).Relation between purification rate of surface(P_s)and detention time(t)is P_s=At^B(B<0). 3)Effects of the test have proved that Ipomoea aquatica is a good va- riety to purify the waste water containing silver.
基金
本研究为国家自然科学基金项目研究成果之一
关键词
净化
含银废水
水蕹菜
Ipomoea aquatica
Purification
Waste water bearingsilver
