摘要
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,提出脱水-干化处理含油污泥的方法。通过实验考察脱水剂种类、脱水剂加量、阳离子型聚丙烯酰胺(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,其最佳脱水条件为:投加量2%(w)、快速搅拌过程前CPAM加量为200mg/L、慢速搅拌前CPAM加量为400mg/L。在该条件下脱水处理后,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%(w)氧化钙或者与煤粉简易混合[m(油泥)∶m(煤粉)=1∶1.5]后,晾晒3～4h可成颗粒状,于电热炉(800℃)上灼烧10～15min,引燃即可燃烧,油泥中的油分可实现再利用。
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 sludge was reduced to 65 ~ from the original of 85 %. During the drying tests, adding 5 M CaO or mixing with breeze （with a mass ratio of sludge/breeze = 1/1.5）, drying under sun- light for 3--4 h and calcination at 800℃ for 10--15 min,the obtained granules were combustible,thus the oily component in sludge was fully reused.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2011年第9期78-82,共5页
Petroleum Processing and Petrochemicals
关键词
含油污泥
脱水
干化剂
脱水油泥
oily sludge
dehydration
solidification agent
dehydrated sludge
