Вернуться к статье

IMPROVING THE EFFICIENCY OF WASTEWATER TREATMENT CONTAINING PETROLEUM PRODUCTS

Table 1 - Comparison of the concentration of pollutants in the filtrate with permissible values

Indicator

The standard MPC

Spent WWPP

Ultrafiltration (fluoroplast)

Ozonation and ultrafiltration (fluoroplast)

Permeate pollutant concentration value

Degree clearances

Permeate pollutant concentration value

Degree clearances

C±Δ mg/dm3 

P=0.95, n=2

C±Δ mg/dm3 

P=0.95, n=2

%

C±Δ mg/dm3 

 P=0.95, n=2

%

6.0-9.0

8.9±0.1

8.9±0.1

-

7.8±0.1

-

Suspended solids, mg/dm3

300

1554±233

< 0.5

99.9

< 0.5

99.9

Dry residue, mg/dm3

3000

19900±3980

4700±470

23.2

850±85

81.4

*BOD5, mg/dm3

300

6305±1261

315±63

80.2

8.8±1.8

97.0

COD, mg/dm 3

500

18215±3643

1052±210

76.2

23.4±4.7

97.6

Nitrate ion, mg/dm3

-

54.6±11

47±7

13.9

3.15±0.63

92.1

Nitrite ion, mg/dm3

-

2.91±0.58

2.1±0.42

27.8

<0.02

98.9

Sulfate ion, mg/dm3

300

121±24

108±16

10.7

9.21±1.84

90.9

Phosphate ion, mg/dm3

12

54.6±11

20±4

17.7

1.84±0.37

90.4

Chloride ion, mg/dm3

1000

280±56

277±27.7

1.1

30.8±6.2

88.8

Petroleum products, mg/dm3

10

14400±2880

109±10.9

93.2

<0.05

99.9

Anionic surfactants,  mg/dm3

10

3.15±0.79

2.6±0.5

10.3

<0.02

99.3

Non-ionic surfactant, mg/dm3

-

4711±942

2974±446

31.2

1.12±0.22

99.9

Fat content,  mg/dm3

50

10100±2525

149±29.8

94.9

<0.01

99.9

BOD5 - Biochemical oxygen demand during 5 days of incubation at 20 °C