Parameters

Effluent A

Effluent B

NESREAa

Temperature ˚C

24.4

25.9

<40

pH

6.65

6.81

6.5 - 9.0

DO (mg/L)

3.5

1.8

-

Conductivity (µS/cm)

333.5

526

500

Colour (PCU)

2490

100

3

Appearance

Yellow

Whitish

Clear

Alkalinity (mg/L)

250

212.5

200

Chloride

425.4

63.81

600

Turbidity NTU

402

102

5

Total Dissolved Solid (mg/L)

169

255

2000

Total Suspended Solid (mg/L)

90.1

24.5

30

Nitrate (mg/L)

225

148

20

Nitrite (mg/L)

53.4

42.5

-

Sulphates (mg/L)

450

0

200

Phosphate (mg/L)

164

40.5

5

Salinity (ppt)

0.16

0.24

0.6

Total Hardness (mg/L)

600

600

150

Sodium (mg/L)

120

100

200

Magnesium (mg/L)

200

150

200

Hydrogen Sulphide (mg/L)

0.1

0.15

0.2

TOC %

4.67

4.51

10

COD (mg/L)

80

100

80

BOD (mg/L)

20

31

30

Oil and Grease (mg/L)

17.1

11.2

-

Iron (mg/L)

0.547

1.753

20

Lead (mg/L)

<0.001

<0.001

0.05

Zinc (mg/L)

0.199

0.594

1

Copper (mg/L)

0.033

0.036

1.5

Cobalt (mg/L)

0.724

0.533

0.5

Manganese (mg/L)

0.144

0.226

5