罐底油泥脱水及干化方法研究

以某油田污水处理厂沉降罐底部油泥为研究对象，结合其稳定性高、含油量较高的特点，提出了脱水-干化处理含油污泥的方法。实验考察了脱水剂种类、脱水剂加量、CPAM加量及干化剂加量对处理效果的影响，实验筛选出最佳脱水剂A，其最佳条件为：投加量2%（质量分数），快速搅拌过程前CPAM加量为200 mg/L，慢速搅拌前加量为400 mg/L，经脱水处理后，油泥含水率从85 % 左右降至65% 左右；干化实验中，脱水油泥在加入5% 氧化钙或者与煤粉简易混合（油泥∶煤粉=1∶1.5）后，晾晒3～4 h可成颗粒状，于电热炉（800℃）上灼烧10～15 min，引燃即可燃烧，油泥中的油分可实现再利用。

STUDY ON THE DEHYDRATION-DRYING OF OILY SLUDGE FROM SETTLING TANK

A dehydration-drying treatment for oily sludge was proposed using oily sludge from the settling tank of an oilfield sewage plant as research object.The effects of dehydration agents and amount,cationic polyacrylamide(CPAM) dosage,curing agents and amount on the treatment were investigated.It was found that using 2% of an optimal dehydration agent A,under the conditions of adding 200 mg/L CPAM prior to high speed stirring and 400 mg/L CPAM prior to low speed stirring,the water content of dehydrated oily slud...