| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| oily water sewer | 1.25 | 0.1 | 3464 | 99 | 16 |
| oily | 0.02 | 0.2 | 1329 | 90 | 4 |
| water | 0.09 | 0.2 | 3575 | 61 | 5 |
| sewer | 1.99 | 0.9 | 4086 | 66 | 5 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| oily water sewer | 1.54 | 0.3 | 9860 | 35 |
| oily water sewer in refinery | 1.57 | 0.6 | 5727 | 54 |
| oily water sewer system design | 0.64 | 0.1 | 5243 | 80 |
| oil refinery wastewater treatment | 1.65 | 0.4 | 8683 | 48 |
| oil refinery wastewater treatment process | 1.62 | 0.3 | 1618 | 59 |
| oil city water and sewer | 0.95 | 0.6 | 789 | 60 |
| waste water treatment process in refinery | 0.56 | 0.8 | 5842 | 16 |
| treatment of oily wastewater | 1.29 | 0.8 | 1251 | 4 |
| oil refinery water pollution | 1.71 | 0.7 | 2222 | 52 |
| refinery wastewater treatment process | 1.09 | 0.2 | 6958 | 53 |
| refinery wastewater treatment plant | 0.66 | 1 | 994 | 90 |
| a review of treating oily wastewater | 1.32 | 0.7 | 9806 | 67 |
