Complete Guide for Process RO Systems WaterTreatment

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 As the core technology of modern process water treatment, industrial reverse osmosis (RO) system is widely used in electronics, pharmaceutical, food, electric power and other industries due to its advantages of high efficiency desalination, stable operation and environmental friendliness. In this paper, from the system principle, core components, process, operation and maintenance management and industry applications of five dimensions, systematic analysis of industrial RO system life cycle management, to provide enterprises with one-stop solutions from selection to operation and maintenance.

I. Industrial RO system technology principle and core advantages

1.1 Reverse osmosis technology principle

 Reverse osmosis (Reverse Osmosis, RO) is based on the selective permeability characteristics of semi-permeable membranes, driven by high pressure, water molecules reverse osmosis through the membrane layer, while dissolved salts, organics, micro-organisms and other pollutants are retained, to realize the purification of water quality. The desalination rate can reach 95%-99.5%, and the conductivity of the water can be stabilized at below 10μS/cm.

1.2 Core advantages of industrial RO system

 High efficiency and energy saving: compared with the traditional ion exchange method, the RO system does not need frequent regeneration, and the operation cost is reduced by 40%-60%.

 Modular design: support parallel expansion, a single system can produce water up to 1000m³/h or more, to meet large-scale water demand.

 Environmental compliance: no chemical emissions, in line with GB/T 19249-2017 “reverse osmosis water treatment equipment” and other national standards.

II. Industrial RO system core components and selection points

2.1 Key components analysis

2.2 Selection of key parameters

 Inlet water quality: SDI ≤ 3, residual chlorine ≤ 0.1ppm, turbidity ≤ 0.2NTU, otherwise need to strengthen pretreatment.

 Produced water requirements: according to process requirements to determine the conductivity, hardness, microbial indicators and other key parameters.

 System recovery rate: single-stage RO recovery rate is usually 50% -75%, two-stage system up to 85% or more.

III. The industrial RO system process and optimization strategy

3.1 Typical process

 Raw water → raw water tank → raw water pump → multi-media filter → activated carbon filter → security filter → high-pressure pump → RO membrane group → water tank → post-treatment (optional) → water points

3.2 Process optimization direction

 Pre-treatment enhancement: for high hardness water source, add softener or scale inhibitor dosing device to prevent scaling on the membrane surface.

 Membrane arrangement optimization: adopt “two-stage” or “multi-stage” arrangement to improve the system desalination rate and recovery rate.

 Concentrated water reuse: reuse the concentrated water for cooling tower make-up water or greening irrigation to realize water recycling.