Case Overview

This membrane degassing project is designed for heating boiler feed water treatment in Russia. RO permeate is used as feedwater to eliminate dissolved oxygen and prevent boiler oxygen corrosion.

Client

Confidential

Feedwater Type

Heating boiler feed water (RO permeate)

Key Treatment Target

Dissolved Oxygen: 7000 ppb → 50 ppb

Inlet Water Specifications

• Raw water DO: approx. 7 ppm (7000 ppb)

• Temperature: 5–40℃

• Surface tension: ≥65 mN/m

• SS: ≤1 ppm

• COD: ≤50 ppm

• Inlet pressure: ≤0.6 MPa

• ORP: ≤100

• Oil content: ≤3 mg/L

• Particle size: <4 μm

• Residual chlorine: <1 ppm

No strong oxidizing agents (hydrogen peroxide, hypochlorous acid etc.). Free of surfactants, alcohols, solvents and other organic contaminants.

Treated Water Quality

Effluent dissolved oxygen: ~50 ppb, oxygen removal rate up to 99.5%.

System Power

• Installed Power: 35 kW

• Operating Power: 18 kW

• Specific Energy Consumption: 0.18 kWh/t

Project Highlights

Low energy consumption, stable operation over wide temperature range. Effectively mitigate boiler corrosion caused by dissolved oxygen and extend boiler service life.