论文部分内容阅读
In this paper the two effluents from PBA (3- phenoxy -benzaldehyde) productionprocess were treated by polymeric adsorbent CHA-lll. PBA or PBC(3-phenoxybenzoic acid) was recovered from the wastewater in the process of neutralization. As asecondary treatment method, adsorption with CHA-lll showed better efficency thanPhotocatalytic decomposition and solvent extraction. The optimal technologicalparameters were: adsorption: current velocity: 2.0 BV/hr(bed volume per hour), roomtemperature, desorption: current velocity:10 BV/hr 80℃8% sodium hydroxideaqueous solutions. In conclusion, 90.9% COD in the neutralizing wastewater and98. 4% COD in the hydrolysis wastewater are removed successfully.
In this paper the two effluents from PBA (3-phenoxy-benzaldehyde) productionprocess were treated by a polymeric adsorbent CHA-lll. PBA or PBC (3-phenoxybenzoic acid) was recovered from the wastewater in the process of neutralization. As a secondary treatment method, The optimal technological parameters were: adsorption: current velocity: 2.0 BV / hr (bed volume per hour), roomtemperature, desorption: current velocity: 10 BV / sodium hydroxideaqueous solutions. In conclusion, 90.9% COD in the neutralizing wastewater and 98. 4% COD in the hydrolysis wastewater are removed successfully.