Geoland Engineering

The Effluent Treatment Plant (ETP) is designed to treat industrial wastewater through a series of physical, chemical, and biological processes to make it safe for discharge or reuse. The process begins with a collection tank, where wastewater is gathered, followed by a screening chamber that removes large solids. The water then enters an equalization tank, which balances flow and concentration, ensuring steady treatment.
Next, in the pH adjustment tank, chemicals like acid or alkali are added to maintain optimal pH. This is followed by coagulation and flocculation, where fine particles are aggregated into larger flocs using chemicals. These flocs settle in the primary clarifier, separating sludge from water.
The partially treated water then moves to the aeration tank, where air is supplied to promote microbial activity that breaks down organic pollutants (reducing BOD and COD). The mixture then enters the secondary clarifier, where biological sludge settles.
Further purification is done through sand and carbon filters, removing remaining suspended solids, color, and odor. Finally, treated water is discharged or reused.
Sludge from clarifiers is collected, dewatered in a sludge drying bed, and disposed of safely.
Overall, ETP ensures environmental protection and compliance with discharge standards.

Overhead Tank Design Calculation

⛩️Simply Supported Beam with Central Point Load (W)

Length = L

Reactions:
RA = RB = W/2

👉Shear Force (SFD):

From A to midspan: +W/2

Just after midspan (load point): −W/2

👉Bending Moment (BMD):

Maximum at midspan = (W × L) / 4

Shape: Triangle (sagging downwards)