RO Systems: Technology, Maintenance & Cost Saving

Ⅰ. RO Reverse Osmosis Water Purification Equipment Overview

1.1 Equipment positioning and industry applications

 RO reverse osmosis water purification equipment is the core equipment for the production of pure water in the food, beverage, alcohol, pharmaceutical and electronics industries, especially for medium and large-scale production scenarios. Its core advantage lies in the efficient and stable high-flow water supply capacity, the standard model water production capacity of up to 5 tons / hour, while supporting the modularization of customization (0.25T-50T / H), can be flexible to match the water needs of enterprises of different sizes.

1.2 Principle of Reverse Osmosis Technology

 The equipment realizes water purification through selective filtration of semi-permeable membrane: driven by high pressure, the water molecules reverse osmosis through the membrane pores (pore size 0.0001 micron), while more than 99% of suspended solids, bacteria, viruses, heavy metal ions and organic matter in water are retained. The conductivity of the effluent water is ≤10μS/cm, which can be directly used in the production process.

1.3 System Composition and Process Flow

 The typical equipment contains five major parts: pretreatment system (sand filter + carbon filter + softening), high-pressure pump, reverse osmosis membrane group, post-treatment system (disinfection/pH adjustment) and intelligent control system.

Process flow:

 raw water → multi-media filtration → activated carbon adsorption → ion exchange softening → precision filtration → high-pressure pressurization → reverse osmosis membrane separation → ultraviolet sterilization → finished water storage tanks

Ⅱ. RO Reverse Osmosis Water Purification Equipment Protection Measures

2.1 Membrane element cleaning and disinfection specifications

Periodic maintenance process:

1.Physical cleaning:

 ● Every 24 hours to run a low-pressure flushing program to remove membrane surface deposits

2.Chemical cleaning:

 ● Preparation of 2% citric acid + 0.1% SDS solution (for inorganic scaling)

 ● Or 0.1% NaOH + 0.05% EDTA solution (for organic contamination)

3. Sterilization treatment:

 ● Use 15ppm sodium hypochlorite solution cyclic immersion for 2 hours

 ● Temperature <27 ℃ every 30 days replacement, temperature >27 ℃ every 15 days replacement before startup Replace every 15 days if the temperature is >27℃.

4. Pre-start flushing:

 ● Low-pressure flushing (0.3MPa) for 1 hour

 ● High-pressure flushing (80% of the design pressure) for 5-10 minutes

 ● Produced water conductivity ＜50μS/cm can be put into use only after testing.

2.2 Control of key operating parameters

Ⅲ. RO Reverse Osmosis Water Purification Equipment Common Problem Analysis

3.1 Raw water utilization optimization program

Problem performance: concentrated water discharge > 50% of water production

Diagnostic process:

1. Check the influent flowmeter (≥ 110% of the design value)

2. Verify the outlet pressure of the high-pressure pump (error ± 5%)

3. Calculate the system recovery rate (± 3% of the design value is reasonable)

4. Optimize the opening of the thick water adjustment valve (50% of the initial setting is recommended)

3.2 System Differential Pressure Abnormal Treatment

Differential pressure threshold:

 ● New membrane group: <0.07MPa

 ● After 1 year of operation: <0.15MPa

Solution:

 ● Differential pressure rises 10%: start enhanced cleaning program

 ● Differential pressure rises 30%: conduct offline testing of membrane elements

 ● Differential pressure rises 50%: immediately replace contaminated membrane elements

3.3 Emergency treatment for water quality fluctuation

Conductivity sudden rise checklist:

Ⅳ. RO Reverse Osmosis Water Purification Equipment Selection and Investment Analysis

Core elements of equipment selection

1. Water quality suitability:

 ● High hardness water (> 300ppm) need to be configured with a secondary softening system

 ● High organic matter water (COD> 3mg / L) need to increase the ultrafiltration pre-treatment

2. Redundancy of capacity design:

 ● Recommended by the peak of the water 120% of the selection of the

 ● Modular expansion of interfaces reserved

3. Optimization of energy consumption:

 ● Frequency conversion high-pressure pumps (energy-saving 15-20%) configure energy recovery device (recovery rate increased by 30%) (15-20%)

 ● Configuration of energy recovery device (recovery rate increased by 30%)

 Conclusion: RO reverse osmosis technology has become the gold standard for industrial pure water preparation. Through scientific selection, standardized operation and maintenance and intelligent management, enterprises can realize the triple benefits of stable water quality, optimized operation cost and extended equipment life. Our company provides customers with a full chain of services from program design to after-sales protection, helping enterprises to build a green and low-carbon water management system.