Experimental Study on Electrodialysis Concentration of Concentrated Brine in the Steel Industry
A pilot study on electrodialysis concentration of reverse osmosis concentrated water from Taishan Steel was carried out.The results show that electrodialysis(ED)has an ideal concentration effect on the concentrated brine of steel industry,and can achieve high concentration of the concentrated brine conductivity,the concentration multiple is 5～10 times,the fresh water conductivity of ED is less than 3 000 μs/cm.The concentration effect of ED on salt water was affected by different ions in water.The concentration effect of ED on COD is not obvious,and ED has a certain ability to resist organic pollution.During the test,the ED energy consumption was 2.3-2.4 kWh/t,and the concentrated water system recovery is more than 85％,which was conducive to realizing the reduction of concentrated brine with low energy consumption and high efficiency,and provided a feasible direction for further implementation of zero waste water discharge.
万方数据
维普
