Auto Polyelectrolyte Preparation & Dosing Package

The Auto Polyelectrolyte Preparation & Dosing Package by Verito is a fully automated, skid-mounted system designed for efficient preparation and precise dosing of polymers used in water and wastewater treatment. Featuring a gravity-fed dual-tank design with the Preparation Tank mounted above the Dosing Tank, it eliminates the need for transfer pumps while ensuring consistent solution quality. Integrated with a PLC-HMI based control system, accurate screw feeder, and high-efficiency agitator, the system ensures reliable operation with minimal human intervention—making it ideal for applications like sludge dewatering, clarifier dosing, and effluent treatment.

This dual-level system features a Preparation Tank mounted above the Dosing Tank, enabling gravity-assisted transfer of the matured solution, ensuring consistent flow without transfer pumps. It supports continuous and batch-type operation, making it adaptable for both small- and large-scale requirements.

 

Advanced FEA Analysis & Engineering Calculations for Skid-Mounted Chemical Injection Packages

At Verito Engineering Private Limited, we specialize in providing comprehensive engineering analysis and calculations for Skid-Mounted Chemical Injection Packages, ensuring superior performance, reliability, and compliance with global industry standards.

Our expertise covers Finite Element Analysis (FEA), Computational Fluid Dynamics (CFD), Structural, Mechanical, Hydraulic, and Thermal Calculations for all critical skid components, including:

Key Engineering Capabilities

Pressure Vessel Calculations API 675-Compliant Dosing Pump Selection & Sizing Agitator & Mixing Calculations (For Chemical Preparation Skids)
  • Pressure Vessel Design & Shell Thickness Calculation as per ASME Sec. VIII Div. 1 & 2.
  • Vessel Internal Component Load Analysis (Baffles, nozzles, internals, etc.).
  • Stress Analysis for Pressure Retaining Components to ensure longevity.
  • Nozzle Reinforcement & Load Analysis to prevent failures under operational loads.
  • Flow Rate & Pressure Drop Calculation for precise chemical metering.
  • Pump Stroke Length, Plunger/Diaphragm Sizing & NPSH Calculation to prevent cavitation.
  • Pulsation Dampener Sizing for flow stability & reduced pressure fluctuations.
  • CFD Analysis for Flow Optimization in complex piping networks.
  • CFD Analysis for Flow & Performance Optimization.
  • Impeller Selection & Torque Calculation for effective chemical mixing.
  • Structural & Fatigue Analysis of Agitator Shaft & Blades for extended service life.
  • Vortex Prevention & Baffle Sizing for improved mixing efficiency.
Automation & Instrumentation for Optimized Operations Piping Stress & Pressure Calculations Structural & Skid Frame Analysis
  • PLC, HMI, SCADA-Based Automation for precise control & reduced human intervention.
  • Smart Flow Meters, Pressure Transmitters & Level Sensors for real-time monitoring.
  • Automatic Dosing Adjustment & Data Logging to optimize chemical consumption & efficiency.
  • Pipe Wall Thickness Calculation as per ASME B31.3.
  • Flange Sizing/rating, Leakage & Weld Joint Strength Assessment for high-pressure applications.
  • Surge & Transient Flow Analysis to prevent pressure spikes.
  • FEA-based validation for skid stability, seismic loads, and lifting conditions.
  • Baseplate & Pump Mounting Deflection Study to prevent misalignment.
Strainer Calculations Safety & PSV Sizing Calculations Injection Quill
  • Strainer Mesh Sizing & Pressure Drop Calculations for filtration efficiency.
  • Pressure Safety Valve (PSV) Sizing per API 520/521.
  • Overpressure & Surge Analysis for emergency scenarios.
  • Injection Velocity & Jet Penetration Analysis for precise chemical dispersion.
  • Wake Frequency Calculation to prevent vibration-induced failures.
Material Selection & Corrosion Analysis Operational Efficiency & Cost Reduction
  • Material Compatibility Assessment (SS316, Duplex, Super Duplex, Alloy 20, Hastelloy).
  • NACE MR0175/ISO 15156 Compliance for sour service applications.
  • Optimized Equipment Layout for Compact Skid Design - reduces footprint & installation cost.
  • Automated Operation to Reduce Manpower Requirements.
  • Remote Monitoring & Troubleshooting for reduced downtime & maintenance costs.

 

System Design

 

Parameter Specification
System Type Fully Automatic, Skid Mounted
Operation Batch-wise / Continuous
Control System PLC Based with Touchscreen HMI
Transfer Mechanism Gravity-fed from Preparation to Dosing Tank
Mounting Structure Heavy-Duty MS with Epoxy Coating or SS304 Fabricated Frame
Access Maintenance Platform with Ladder and Handrails (Optional)
Polymer Preparation Tank (Top Tank)

 

Parameter Specification
Capacity 300 L to 5000 L (Customizable)
MOC (Tank) SS304 / SS316 / FRP / HDPE (based on application)
MOC (Agitator Shaft & Impeller) SS304 / SS316 with TEFLON coating (Optional)
Agitator Type Top Entry with Helical or Anchor Paddle or Hydrofoil Blade
Motor & Gearbox TEFC / Flameproof (as per zone), Inline or Helical, IP55/65 rated
Powder Dosing System Hopper with Controlled Screw Feeder & Vibrator
Dosing Option Metering Pump with Calibration Column
Water Control Solenoid/Actuated Ball Valve with Flow Meter
Instrumentation Level Sensor, Low-High Level Switches, Batch Timer, Flow Sensor
Safety Features Dry-Run Protection, Interlock with Agitator

 

Polyelectrolyte Dosing Tank (Bottom Tank)

 

Parameter Specification
Capacity 300 L to 5000 L (Customizable)
MOC SS304 / SS316 / HDPE / FRP
Agitation (Optional) Slow Speed Agitator (if required for anti-settling)
Instrumentation Low Level Switch, Drain Valve, Level Indicator
Discharge Bottom Drain with Flanged/Threaded Connection
Dosing System

 

Parameter Specification
Dosing Pump Type Solenoid Diaphragm / Motorized Diaphragm / Plunger Pump
Flow Range 0.5 LPH to 5000 LPH (as per client requirement)
Discharge Pressure Up to 10 bar
MOC of Wetted Parts SS316 / PTFE / PVC / PP / Hastelloy (as per fluid compatibility)
Accessories Calibration Column, Pressure Relief Valve, Pulsation Dampener, NRV, Strainer
Pump Drive VFD Controlled for Dosing Adjustments

 

Automation & Instrumentation

 

Parameter Specification
Control Panel SS304 / MS Powder Coated with Internal Wiring
PLC Make Siemens / Schneider / Allen Bradley / Delta (as per client preference)
HMI 7” or 10” Touchscreen – Password Protected
Communication MODBUS / PROFIBUS / Ethernet / SCADA / IoT (Optional)
Alarm & Interlock Buzzer + Indicator + System Shutdown
Data Logging USB/SD Card or Remote Access
Optional Features

 

  • Auto Cleaning (CIP) System with Drain & Wash Valves
  • Online Viscosity / Conductivity Sensors for Solution Monitoring
  • Dust-Free Powder Feeding System with Enclosed Hopper and Suction
  • Dual Redundant Dosing Pumps (Duty + Standby with Auto Changeover)
  • Integrated Water Booster Pump for Unpressurized Feed Water
  • Remote Access and Monitoring via GSM / WiFi / Ethernet
Material of Construction (Standard Options)

 

Parameter Specification
Tanks SS304 / SS316 / FRP / HDPE
Frame MS Powder Coated / SS304
Agitator Shaft SS316 / SS304 with Coating
Wetted Pump Parts SS316 / PTFE / PVC / PP
Valves & Piping SS304 / UPVC / CPVC / PP
Panel Enclosure SS304 / CRCA Powder Coated

 

 

Applications

 

  • Municipal Wastewater Treatment Plants
  • Effluent Treatment Plants (ETP)
  • Sewage Treatment Plants (STP)
  • Sludge Dewatering Systems
  • DAF/Clarifier Polymer Dosing
  • Pulp & Paper Industries
  • Food & Beverage Wastewater
  • Oil & Gas – Produced Water Treatment
  • Chemical Process Plants

Key Highlights

  • Dual-Tank Vertical Layout (Preparation Above Dosing)
  • Gravity-Based Solution Transfer – No transfer pump required
  • Screw Feeder or Emulsion Pump Based Polymer Feeding
  • Fully Automated PLC + HMI Based Operation
  • Skid-Mounted, Plug-and-Play Design
  • Accurate Mixing, Maturation, and Dosing
  • Supports Batch or Continuous Operation
  • Zero Human Intervention Once Running

 

 

Why Choose Verito Engineering?

 

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