离子交换工艺处理微污染黑臭水的性能研究

Study on the Performance of Micro Polluted Black and Odorous Water Treatment by Ion Exchange Process

针对传统黑臭水体处理技术脱氮除磷效果不佳的问题,采用离子交换工艺对微污染黑臭水进行处理,探究了系统最优运行参数和再生参数,并考察了最优运行条件下系统的脱氮除磷能力。静态试验表明:D296树脂进行吸附时,最佳投加量为0.5 g/L、吸附时间为150 min。此条件下存在竞争吸附现象,但对污染物去除影响不大;动态实验显示:D296树脂动态产水过程中,可实现同步脱氮除磷。出水NO^(-)_(3)-N和TP分别为1 mg/L和0.5 mg/L时,树脂穿透体积为540 BV左右;树脂最佳再生时间为100 min,产水体积相同时,出水NO^(-)_(3)-N和TP随再生次数的增加而增加,再生3次后的D296树脂仍具较好的脱氮除磷效果和再生率。

In view of the problem that the traditional black odor water treatment technology has poor effect of nitrogen and phosphorus removal,the ion exchange technology is used to treat the slightly polluted black odor water,and the optimal operation parameters and regeneration parameters of the system are explored,and the denitrification and phosphorus removal capacity of the system under the optimal operation conditions is investigated.Static test shows that the best dosage of D296 resin is 0.5 g/l and adsorption time is 150 min.Under this condition,there is competition adsorption,but it has little influence on pollutant removal;The dynamic experiment shows that the simultaneous denitrification and phosphorus removal can be realized in the process of dynamic water production of D296 resin.When the NO^(-)_(3)-N and TP of effluent were 1 mg/l and 0.5 mg/l respectively,the resin penetration volume was about 540 BV;The best regeneration time of the resin is 100 min.The water volume is the same;the NO^(-)_(3)-N and TP of the effluent increase with the increase of regeneration times.The D296 resin after three regenerations has better nitrogen and phosphorus removal effect and regeneration rate.