Wastewater from acrylonitrile process deal by activated sludge

Dear all,

The wastewater comes from the acrylonitrile process is not easy to deal by activated sludge , because the wastewater contains nitrile, biological toxicity, and that is not suited for microbial to treat the wastewater.
1.If we separate the cyanic acid and acetonitrile from the acrylonitrile process, will the wastewater be good enough to treat by microbial ?
2.is there any way to check the biological toxicity of wastewater is lower, and is suit for activated sludge to treat?