Mechanical Filtration Activity Carbon Filter Precision Filter Primary Reverse Osmosis Water Treatment Equipment

Product description

1、 Core equipment composition and functions
1. Mechanical Filtration
Function: By physically intercepting and removing large particles such as suspended solids, sediment, rust, colloids, etc. from raw water, turbidity is reduced (usually from 20NTU to below 5NTU).
Typical equipment:
Multi media filter: filled with filter materials such as quartz sand and anthracite, the upper layer of fine sand intercepts fine impurities, and the lower layer of coarse sand supports the filter layer.
Self cleaning filter: using a metal filter screen (precision 50-100 μ m), removing trapped impurities through mechanical scraping, suitable for high turbidity raw water.
Operation mode: Automatic backwash (pressure difference>0.05MPa or timed trigger), backwash intensity 15-20L/(m ² · s), lasting for 5-10 minutes.
2. Activity Carbon Filter
Function: Utilizing the adsorption properties of activated carbon, remove residual chlorine, organic matter (such as pesticides and humic acid), pigments, and odors from water, and reduce TOC (total organic carbon) to protect subsequent reverse osmosis membranes.
Technical details:
Coconut shell activated carbon has a specific surface area of ≥ 1000m ²/g, a residual chlorine adsorption efficiency of>99%, and an organic matter adsorption capacity of 100-150mg/g.
Maintenance cycle: Replace activated carbon once a year or restore adsorption capacity through regeneration.
3. Precision Filter
Function: Also known as a security filter, it is installed in front of the reverse osmosis membrane with a filtration accuracy of 5 μ m. It intercepts small particles, colloids, and suspended solids (such as silicon particles and iron manganese oxides) remaining after mechanical filtration and activated carbon filtration, preventing scratches or blockages on the membrane surface.
Filter type: PP melt blown filter element, deep filtration structure, strong dirt holding capacity, replacement cycle of 1-3 months (when the pressure difference is greater than 0.1MPa).
4. Primary 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, achieving deep desalination.
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).
Core 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 control: Automatically adjust the concentrated water valve to control the recovery rate of 60% -80%. The concentrated water needs to be treated before discharge or reuse.

2、 System Process and Working Principle
1. Complete processing flow
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Raw water → Mechanical filtration (to remove large particles) → Activated carbon filtration (to remove residual chlorine/organic matter) → Precision filtration (5 μ m) → Primary reverse osmosis (desalination) → Purified water (discharged or reused to meet standards)
2. Key control nodes
Preprocessing linkage:
The mechanical filter and activated carbon filter automatically trigger backwashing through a differential pressure sensor to ensure that the RO inlet SDI (pollution index) is ≤ 5 and residual chlorine is ≤ 0.1mg/L.
RO system automatic control:
Water production mode: automatically starts and stops based on the water tank level (low level start, high level stop) or water demand.
Rinse mode: Rinse for 30 seconds before starting up to remove stagnant water from the membrane, and rinse for 2 minutes after stopping to prevent pollutant deposition.
3、 Application scenarios
1. Industrial production water
Electronics industry: Chip cleaning water (conductivity ≤ 10 μ S/cm) is used to remove ions and particulate impurities through pretreatment and RO.
Food and beverage industry: Process water (such as beer brewing, purified water production) meets the GB 5749 standard for drinking water.
Chemical industry: Boiler softened water pretreatment (reducing hardness to ≤ 0.03mmol/L) to prevent scaling and corrosion.
2. Civil and commercial water purification
Direct drinking water system in the community: The conductivity of the produced water is ≤ 50 μ S/cm, which can be consumed directly. It is equipped with a UV sterilizer to ensure microbial safety.
Rural well water purification: removing iron and manganese, odors, high salt, and other issues to improve the safety of drinking water.
3. Wastewater treatment and reuse
Industrial park wastewater: After pretreatment and RO treatment, it is reused as circulating cooling water with turbidity ≤ 1NTU and conductivity ≤ 500 μ S/cm, reducing the amount of new water required.
Reclaimed water: such as flushing toilets, greening irrigation, reducing sewage discharge pressure.

4、 Technical features and advantages
1. Multi level filtering collaborative efficiency
Mechanical filtration: solves the problem of physical turbidity and reduces subsequent loads;
Activated carbon filtration: targeted removal of chemical pollutants (residual chlorine, organic matter), protecting the RO membrane;
Precision filtration: ensuring the safety of RO inlet particle size and extending membrane life;
Primary RO: Achieve ion level desalination to meet the demand for medium to high purity water.
2. Automation and energy-saving design
PLC control system: The entire process runs automatically, with real-time monitoring of parameters such as pressure, flow rate, and conductivity, and supports remote monitoring (such as mobile apps).
Energy saving high-pressure pump: frequency conversion control, energy consumption as low as 1-2kWh/m ³, saving 15% -25% energy compared to traditional systems.
3. Flexible adaptation and expansion
Strong adaptability to water quality:
High turbidity water: Add flocculation dosing device (such as PAC)+sedimentation tank;
High hardness water: equipped with softening device (ion exchange resin);
High residual chlorine water: Add reducing agents (such as sodium bisulfite).
System scalability: can be upgraded to secondary RO or connected to EDI devices to meet the demand for ultrapure water (such as in the semiconductor industry).
5、 Maintenance and troubleshooting
1. Daily maintenance checklist
Equipment maintenance content cycle
Mechanical filter inspection for filter material loss, supplementing quartz sand/anthracite every six months
The activated carbon filter detects residual chlorine in the effluent, and if it exceeds the standard, the activated carbon should be replaced every quarter
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
Check the lubricating oil level of the high-pressure pump and clean the heat dissipation holes every quarter
2. Common faults and solutions
Possible causes and solutions for the fault phenomenon
RO water production decreases due to membrane fouling/low inlet water temperature, chemical cleaning of membrane/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%
Activated carbon filter odor filter material adsorption saturation/sudden increase in organic matter in raw water Replace activated carbon/Strengthen front-end pretreatment
Poor backwash effect of mechanical filter, filter material compaction/insufficient backwash pressure, filter material washing/check the performance of backwash pump
6、 Selection and configuration suggestions
1. Select based on water production rate
Small system: 1-5m ³/h, suitable for laboratories and small factories, equipment power of 3-7.5kW, occupying an area of 3-6 square meters.
Medium sized system: 10-20m ³/h, suitable for hotels and food factories, requiring a 20-50m ³ water tank and a power of 10-15kW.
Large scale system:>50m ³/h, using multiple sets of membranes in parallel, equipped with a central control system, power>30kW, requiring a dedicated machine room.

2. Targeted configuration of raw water quality
Groundwater (iron and manganese>0.3mg/L): Mechanical filters are filled with manganese sand, and aeration technology is used to remove iron and manganese.
Surface water (turbidity>10NTU): Pre sedimentation tank+flocculation dosing (PAC/PAM) to reduce mechanical filtration load.
Seawater/high salt well water (TDS>3000mg/L): Upgrade to secondary RO or combine with evaporation crystallization treatment for concentrated water.
3. Environmental protection and safety design
Concentrated water reuse: Treating concentrated water through concentrated water RO or evaporation equipment to achieve zero emissions (such as high salt wastewater in industrial parks).
Material safety: Components that come into contact with drinking water are made of food grade stainless steel (304/316L) or sanitary grade PE, in compliance with GB 17219 standard.
summarize
This water treatment equipment achieves full process purification from large particle impurities to dissolved salts through a four stage combination of “mechanical filtration+activated carbon+precision filtration+first stage RO”, suitable for industrial production, civil water purification, and mild sewage treatment and reuse. Its core advantages lie in compact processes, high degree of automation, low maintenance costs, and the ability to flexibly adjust configurations according to water quality. Whether it is solving problems such as turbidity and odor in water quality, or meeting the demand for high-purity water, this system can provide reliable solutions and is one of the mainstream choices in the field of water treatment.