|
Oil sludge type |
Moisture content | Oil content | Slag content |
|
Refinery water treatment station sludge |
62.56% | 21.47% |
15.97% |
|
Oil field sludge |
35.62% | 20.79% |
43.59% |
|
Petrochemical plant tank bottom sludge |
34.31% | 54.42% |
11.27% |
| Liaohe mixed sludge | 25.13% | 70.69% |
4.18% |
It can be seen from the content of the three-phase components of the oil sludge in the above table that the content of the three-phase components of different types of oil sludge varies greatly. The oil sludge of the refinery water treatment station is produced during the process of oil sewage treatment. Generally, it only performs simple dehydration treatment, so its water content is the highest. The oil content of the four oil sludges is above 20%, especially in the Liaohe River. The sludge has the highest oil content, up to 70.69%. This type of sludge has high recycling value. The oil field is the soil contaminated by oil, so the slag rate is the highest, and the difference is caused by the pollution degree. The slag-containing rate of the bottom sludge is related to the cleaning period of the oil storage tank. The cleaning period of the petrochemical plant is about 3 years, so the slag content of the bottom sludge produced by the tank is relatively high.
In summary, different types of oil sludge should be treated and recycled according to their own characteristics.
