摘要
针对乙酰乙酰苯胺生产废水有机物浓度高、毒性大、难降解等问题,以某生化厂实际废水为研究对象,采用树脂吸附的预处理方法对其进行试验研究。结果表明,这种方法能有效回收废水中的乙酰乙酰苯胺产品,同时处理后的废水COD<8000 mg/L,其B/C值可达0.4以上。按照试验中所建立的优化操作条件,在150 m³/d规模的实际废水预处理工程实践中,对COD的处理效率稳定在50%~60%,乙酰乙酰苯胺回收率>95%,大大提高了废水的可生化性,对后续生物处理过程基本不构成影响。单位废水回收乙酰乙酰苯胺的价值,扣除运行成本还有盈余。
Aiming at the problems such as high concentration of organic matter,high toxicity,and refractory of acetoacetanilide production wastewater,the pretreatment method of resin adsorption was used to study the actual wastewater from a biochemical plant.The results show that this method can effectively recover the acetoacetanilide products in the wastewater,while the COD of treated wastewater is less than8000 mg/L and its B/C ratio can reach more than 0.4.According to the optimized operating conditions established in the experiment,the treatment efficiency of COD is stable at 50% to 60%,and the recovery rate of acetoacetanilide is greater than 95% in the actual wastewater pretreatment project with150 m³/d capability,which greatly improves the biodegradability of wastewater and doesnot basically affect the subsequent biological treatment process.There is a surplus after deducting operation costs for the recovered acetoacetanilide value of unit wastewater.
作者
周兵
朱兆坚
王宁
郭孝虎
阮志伟
肖若雯
张炜铭
ZHOU Bing;ZHU Zhao-jian;WANG Ning;GUO Xiao-hu;RUAN Zhi-wei;XIAO Ruo-wen;ZHANG Wei-ming(Jiangsu NJU Environmental Technology Co.Ltd.,State Environmental Protection Engineering Center for Organic Chemical Industrial Wastewater Disposal and Resource Reuse,Nanjing 210046,China;State Key Laboratory of Pollution Control and Resource Reuse,School of the Environment,Nanjing University,Nanjing 210023,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2021年第8期160-163,共4页
China Water & Wastewater
关键词
乙酰乙酰苯胺废水
树脂吸附
预处理
回收率
acetoacetanilide wastewater
resin adsorption
pretreatment
recovery rate
