Abstract:
The effects of the flocculation process on the removal of suspended solid and oil from methanol-free produced water are investigated by response surface methodology(RSM), with hydrogen peroxide as oxidant, sodium hydroxide as pH regulator, polyaluminium chloride and polyacrylamide as composite flocculants. The results show that the significant order of each agent is as follows:polyaluminium chloride > pH regulator > oxidant > polyacrylamide. The optimal dosage are as follows:oxidant 616 mg/L, pH regulator 161 mg/L, polyaluminium chloride 213 mg/L, polyacrylamide 3.3 mg/L. Under these conditions, the total water quality index of methanol-free produced water is 70.3%, and the error of the response surface model is only 2.23%, which are in good agreement.
Key words:
polyaluminium chloride,
polyacrylamide,
flocculation,
response surface method,
produced water
摘要：
以H2O2为氧化剂，NaOH为pH调节剂，聚合氯化铝与聚丙烯酰胺为复合絮凝剂，通过响应面法考察絮凝工艺对不含醇采出水中固体悬浮物及油的去除效果。结果表明，各药剂的显著顺序为聚合氯化铝>pH调节剂>氧化剂>聚丙烯酰胺；药剂最优添加量：氧化剂616 mg/L，pH调节剂161 mg/L，聚合氯化铝213 mg/L，聚丙烯酰胺3.3 mg/L。在此条件下，不含醇采出水的水质总指标实际值为70.3%，与响应面模型预测值误差仅为2.23%，两者吻合度良好。
关键词:
聚合氯化铝,
聚丙烯酰胺,
絮凝,
响应面,
采出水
CLC Number:
Lixian Wen,Zengzeng Li,Wen Shao,Tong Liu,Jia Liu,Xiaoyun Lu,Li Cai. Optimization of flocculation and sedimentation for treating methanol-free produced water based on response surface method[J]. Industrial Water Treatment, 2020, 40(4): 84-88.
温立宪,李增增,邵文,刘统,刘佳,路晓芸,蔡力. 基于响应面法优化絮凝沉降处理气田不含醇采出水[J]. 工业水处理, 2020, 40(4): 84-88.