One Stage Reverse Osmosis Belt Precision Water Pre-treatment with Aseptic Pure Water tank Purification Water System

Product description

1、 Core components and functional architecture of the system
1. Precision Water Pre treatment System
Core role:
Remove suspended solids, colloids, residual chlorine, organic matter, and fine particles from raw water to provide qualified influent for primary reverse osmosis (RO), prolong membrane life, and improve desalination efficiency.
Typical configuration:
Multi media filter (mechanical filtration): filled with quartz sand and smokeless coal to remove large particle impurities (turbidity ≥ 20NTU reduced to ≤ 5NTU).
Activated carbon filter: adsorbs residual chlorine (removal rate>99%), organic matter (such as TOC ≤ 3mg/L), and odors.
Precision filter (security filter): With a filtration accuracy of 5 μ m, it intercepts fine particles and colloids remaining after pretreatment, protecting the RO membrane from physical damage.
Automated control:
Multi media filters and activated carbon filters automatically backwash (pressure difference>0.05MPa or timed triggering).
Precision filter differential pressure monitoring, filter element replacement prompt (when differential pressure>0.1MPa).
2. One Stage Reverse Osmosis (RO)
Desalination principle:
Under the drive of a high-pressure pump (0.8-1.5MPa), raw water passes through a reverse osmosis membrane, and water molecules pass through the membrane, while dissolved salts (such as NaCl), bacteria, viruses, and small molecule organic matter are intercepted.
Single stage desalination rate: 95% -98%, and the conductivity of the produced water is usually 5-50 μ S/cm (when the TDS of the raw water is less than 2000mg/L).
Key components:
Membrane element: Roll up composite membrane (such as Dow BW30, Heiden ESPA), effective filtration pore size 0.0001 μ m, single membrane water production of 0.5-1m ³/h.
Concentrated water management: Automatically adjust the concentrated water valve to control the recovery rate of 60% -80%. Concentrated water can be collected in plastic water tanks for non drinking water scenarios (such as irrigation).
3. Aseptic Pure Water Tank
Functional positioning:
Safely store RO produced water to prevent secondary pollution, suitable for scenarios with strict requirements for microorganisms and particle size (such as food, medicine, electronics).
Design standards:
Material: Food grade 316L stainless steel or sanitary grade PE, with polished inner walls (roughness Ra ≤ 0.6 μ m) to prevent microbial adhesion.
Aseptic control:
Equipped with an air respirator (0.22 μ m sterilization filter) to prevent external pollution from entering.
Online UV sterilizer (254nm wavelength, irradiation intensity ≥ 30mJ/cm ²), continuously inhibits microbial reproduction.
Spray cleaning system: Regular automatic cleaning (such as once a week, using 80 ℃ hot water or 0.1% citric acid solution).
Liquid level and monitoring:
The ultrasonic level gauge monitors the water level in real time and is linked to the start and stop of the RO system (low level starts water production, high level stops).
Optional online conductivity meter and TOC detector for real-time monitoring of water quality.

2、 System Process and Water Quality Assurance
1. Complete processing flow
plaintext
Raw water → Multi medium filter (to remove large particles) → Activated carbon filter (to remove residual chlorine/organic matter) → Precision filter (5 μ m) → Primary reverse osmosis (desalination) → Aseptic pure water tank (to store purified water) → Water point
2. Key indicators of water quality
Turbidity (NTU), residual chlorine (mg/L), conductivity (μ S/cm), total bacterial count (CFU/mL), particle size (≥ 0.22 μ m) during the processing stage
Raw water ≤ 20 ≤ 1.0 ≤ 2000 ≤ 1000-
Preprocessed ≤ 1 ≤ 0.1 ≤ 1800 ≤ 100 ≤ 1000
RO water production ≤ 0.5 ≤ 0.05 ≤ 50 ≤ 10 ≤ 100
Sterile water tank effluent ≤ 0.5 ≤ 0.05 ≤ 50 ≤ 1 (national standard requirement) ≤ 30
3. Core technological advantages
Multi level filtration collaboration: Pre treatment removes physical impurities and chemical pollutants, RO achieves ion level desalination, sterile water tank eliminates secondary pollution, ensuring water quality is fully controllable throughout the process.
Automation and Energy Efficiency:
Pre treatment automatic backwashing and RO system dynamically adjust based on water quality to reduce labor costs.
High voltage pump frequency conversion control, with energy consumption as low as 1-2kWh/m ³, saving 15% -25% energy compared to traditional systems.
Flexible adaptability:
The pre-treatment configuration can be adjusted according to the quality of the raw water (such as adding a softener to treat high hardness water, or adding a dosing device to treat high turbidity water).
The sterile water tank capacity can be customized (1-100m ³) to meet the water needs of different scales.
3、 Application scenarios and industry adaptation
1. Food and beverage industry
Applicable scenarios: beverage preparation water, food processing and cleaning water, sterile filling line water source.
Core requirements:
The produced water must comply with GB 17324 “Hygienic Standards for Bottled Drinking Purified Water”, with strict microbiological indicators (total bacterial count ≤ 20CFU/mL, coliform group ≤ 3MPN/100mL).
The sterile water tank needs to pass food grade certification (such as FDA, NSF) and support CIP online cleaning.
2. Pharmaceutical and cosmetics industry
Applicable scenarios: Purified water preparation (in accordance with Chinese Pharmacopoeia standards), water for cosmetic raw materials, and water for equipment cleaning.
Upgrade configuration:
After RO water production, it is connected to an EDI electro deionization device to further improve water quality (resistivity ≥ 15M Ω· cm).
Install online ozone sterilization on the sterile water tank to ensure a microbial load of ≤ 10CFU/100mL.
3. Electronics and Semiconductor Industry
Applicable scenarios: chip cleaning water, circuit board production water (conductivity ≤ 10 μ S/cm).
Expansion requirements:
The precision filter has been upgraded to a 1 μ m filter element to remove smaller particle impurities.
The entire system process uses stainless steel material to avoid metal ion contamination.

4. Civil and commercial water purification
Applicable scenarios: Direct drinking water stations in residential areas, centralized water supply systems in schools/hospitals, and commercial water purification equipment.
Cost effective configuration:
The sterile water tank is made of sanitary grade PE material, which is 30% cheaper than stainless steel and meets drinking water storage standards.
Support remote monitoring of water quality data (such as conductivity and liquid level) through mobile apps for easy operation and maintenance management.
4、 Maintenance points and troubleshooting
1. Regular maintenance plan
Component maintenance content cycle
Check the loss of filter material in the multi-media filter and replenish quartz sand/anthracite every six months
Activated carbon filter replacement of activated carbon filter material every year
Precision filter replacement PP melt blown filter cartridge 1-3 months
Chemical cleaning of RO membrane components (acid descaling/alkaline organic matter removal) every 6-12 months
Clean and disinfect the inner wall of the sterile water tank using a 0.1% sodium hypochlorite solution every quarter
Replace the lamp tube of the UV sterilizer (when the irradiation intensity is less than 20mJ/cm ²) every 1-2 years
2. Common faults and solutions
Possible causes and solutions for the fault phenomenon
RO water production decreases by 30% due to membrane fouling/low inlet water temperature for chemical cleaning of membranes/raising water temperature to above 15 ℃
The conductivity of the produced water increases, and the membrane element is damaged/the opening of the concentrated water valve is insufficient. Replace the membrane/adjust the concentrated water valve to a recovery rate of 70%
Aseptic water tank with excessive microorganisms, UV lamp failure/air respirator blockage, replacement of lamp tube/cleaning or replacement of filter element
Poor pre-treatment backwashing effect, filter material compaction/insufficient backwashing strength, backwashing of filter material/adjustment of backwashing flow rate

5、 Environmental Protection and Safety Design
1. Concentrated water management plan
Reuse scenario:
Collect to plastic water tank for greening irrigation and road flushing in the factory area (ensuring salt content<1000mg/L).
High salt concentrated water (TDS>3000mg/L) can be connected to evaporation crystallization equipment to achieve zero emissions.
Emission standards: If directly discharged, it must comply with GB 8978 “Comprehensive Wastewater Discharge Standard”, and the main control indicators are pH, TDS, and suspended solids (SS).
2. Safety protection measures
Electrical safety: Electrical components such as high-voltage pumps and ultraviolet lamps require grounding protection, and the control system meets the IP54 protection level.
Chemical safety:
Activated carbon regeneration waste liquid and RO membrane cleaning waste liquid need to be classified and collected, and handed over to professional institutions for treatment.
Softening and regenerating salt (NaCl) should be stored in a closed container to avoid moisture and contact with children.
Water tank safety: The sterile water tank is equipped with an overflow pipe and a vent valve to prevent water immersion caused by high water level or equipment failure.
summarize
This purified water system achieves efficient purification from raw water to high-purity water through a combination of “precision pretreatment+primary RO desalination+sterile storage”, especially suitable for scenarios with strict requirements for microbial and ion content. Its core competitiveness lies in process integration, intelligent control, and convenient maintenance, while meeting diverse needs through differentiated water tank configurations (sterile stainless steel water tanks and economical plastic water tanks). Users can flexibly adjust their plans based on industry standards and raw water characteristics to ensure long-term stable operation of the system and reduce overall costs.