STP & ETP EQUIPMENT

Sewage & Effluent Treatment Equipment

13 precision-engineered MS and SS components for complete STP and ETP installations. Custom fabrication for any capacity — all made in-house at our SIDCO factory, Chennai.

SCREENING & PRE-TREATMENT

Pre-Treatment Equipment

Component 1 of 13

Component 2 of 13

Component 3 of 13

Pre-Treatment Screen Chamber

Screen Chamber

First stage of treatment. Removes coarse solids, rags, and floating debris from incoming wastewater before entering the main treatment process.

MS or SS 304 fabrication
Bar screen or mesh screen options
Manual rake or auto self-cleaning
Custom inlet/outlet flange sizes
Corrosion-protected with epoxy coating

Chemical Dosing Flash Mixer

Flash Mixer

Rapid mixing chamber for coagulant and flocculant dosing. Ensures uniform chemical distribution before settling tanks.

Retention time: 30–60 seconds
High-speed impeller with geared motor
MS or SS 304 construction
Chemical dosing port and inspection hatch
Capacities: 1 KLD to 500 KLD

Mixing Equipment Agitator

Agitator (Slow Speed / High Speed)

Keeps wastewater in equalisation or aeration tanks uniformly mixed, preventing sludge settlement and ensuring consistent treatment efficiency.

Slow speed (20–100 RPM) or high speed (100–300 RPM)
Top-entry or side-entry mounting
MS or SS 304/316 impeller and shaft
TEFC motor with IP55 protection
Capacities: 1 m³ to 5,000 m³ tanks

CLARIFICATION & SETTLING

Clarification Equipment

Component 4 of 13

Component 5 of 13

Clarification Tube Settler

Tube Settler

High-rate settling system that increases effective settling area within a compact footprint. Reduces clarifier tank size by 60–70% versus conventional settling.

PVC tube modules at 60° inclination
Module size: 300 × 300 × 1000 mm (customisable)
Suitable for STP, ETP, and WTP
Reduces SS from 150 mg/L to < 20 mg/L
Easy replacement without draining the tank

Clarification Lamella Clarifier / Plate Settler

Lamella Clarifier / Plate Settler

Inclined plate settler for high-efficiency solids removal. Particularly effective for high-turbidity industrial effluents and municipal sewage treatment.

Inclined PVC or SS 304 plates
Plate spacing: 40 mm to 80 mm
Overflow rate: 5 to 15 m³/m²/hr
Compact footprint versus conventional clarifier
Suitable for STP/ETP/WTP up to 5 MLD

TANKS, VESSELS & FILTERS

Tanks, Vessels & Filters

Component 6 of 13

Component 7 of 13

Component 8 & 9 of 13

Component 10 of 13

Component 11, 12 & 13 of 13

Tanks & Vessels MS/FRP Underground & Overhead Tanks

MS/FRP Underground & Overhead Tanks

Structural MS tanks with internal FRP lining for complete corrosion protection. Suitable for equalisation, sludge holding, and chemical storage.

Capacities: 1 KL to 500 KL
MS outer shell with FRP inner lining
Manholes, vent connections, level indicators
Cylindrical or rectangular designs
SS 304/316 tanks for pharma/food ETP

Tanks & Vessels Acid Storage Tank (HDPE / FRP)

Acid Storage Tank (HDPE / FRP)

Chemical-resistant tanks for storing dosing chemicals including sulphuric acid, ferric chloride, sodium hypochlorite, and lime slurry.

Material: HDPE or FRP (chemical grade)
Capacities: 200 L to 10,000 L
Integral bund and overflow fitting
HDPE fittings with valve isolation
Secondary containment compliance

Filtration PSF / ACF Filter Vessels

PSF / ACF Filter Vessels

Pressure sand filter (PSF) and activated carbon filter (ACF) vessels for polishing treated effluent to meet PCB discharge or water reuse standards.

MS or SS 304 pressure vessels
Working pressure: 3.5 kg/cm²
Filter media: silica sand or activated carbon
Manual or automatic backwash control
Vertical or horizontal orientation

Tanks & Vessels Equalisation Tank

Equalisation Tank

Buffers flow and concentration variations in incoming wastewater, ensuring consistent and stable feed to all downstream treatment units.

MS with epoxy coating or SS 304
Volume: 2 to 8 hours HRT
Submerged or floating aerator option
Level sensors and overflow protection
Integrated sump pump provision

Sludge Management Sludge Holding Tank & Drying Beds

Sludge Holding Tank & Drying Beds

Intermediate storage and natural dewatering of biological sludge before final disposal or reuse as compost feedstock.

Holding tank: MS with epoxy coating
Drying bed: RCC or MS frame with drainage media
Sludge depth: 200–300 mm per batch
Underdrainage piping for filtrate collection
Option: mechanical dewatering screw press

Need a Complete STP or ETP Package?

We supply individual components or complete turnkey STP/ETP packages. All equipment fabricated in-house at our SIDCO factory, Chennai.