Table 2 Characterization of the influent and effluent in Plant B

Turbidity (NTU)

76–41,100

1–159

-

SS (mg L⁻¹)

8–4476

0.1–17.3

250

Colloidal Si (mg L⁻¹)

7–3876

0.1–15

-

Soluble Cu (mg L⁻¹)

0.08–19.06

0–0.29

1

Soluble Ni (mg L⁻¹)

0–0.59

0–0.21

0.7

Soluble Al (mg L⁻¹)

0.04–1.29

0.07–0.86

-

Conductivity (µS cm⁻¹)

637–5320

839–4830

-

pH

2.6–9.2

6.7–8.6

5—10

Zeta potential (mV) ^b

-19.4—(-3.8)

-11.7—(3.8)

-