Fully Automatic Quartz Sand Filter Active Carbon Filter With Softening One Stage Reverse Osmosis Belt Water Tank Ultraviolet

Product description

1、 Overall system architecture and functional modules
This system is an integrated and fully automated water treatment solution that achieves deep purification of raw water through multi-stage filtration, softening, desalination, and sterilization processes. It is suitable for industrial production, drinking water supply, and other scenarios. The core modules include:
Fully Automatic Quartz Sand Filter
Function: Utilizing the physical interception effect of quartz sand, remove large particle impurities such as suspended solids, sediment, rust, and colloids from raw water, and reduce turbidity from 20 NTU to ≤ 5 NTU.
Automated control: By monitoring the pressure difference (>0.05 MPa) through PLC or triggering backwashing at regular intervals, the backwashing intensity is 15-20 L/(m ² · s), lasting for 5-10 minutes, without the need for manual operation.
Fully Automatic Active Carbon Filter
Function: With the adsorption characteristics of coconut shell activated carbon, it efficiently removes residual chlorine (removal rate>99%), organic matter, pigments, and odors, protecting the subsequent reverse osmosis membrane.
Technical parameters: Activated carbon specific surface area ≥ 1000 m ²/g, contact time ≥ 15 minutes, residual chlorine in effluent ≤ 0.1 mg/L.
Softening Unit
Function: Remove calcium and magnesium ions through ion exchange resin (such as Na type strong acid resin), reduce water hardness from 300 mg/L to ≤ 5 mg/L, and prevent reverse osmosis membrane fouling.
Regeneration mechanism: Flow or time triggers regeneration (e.g. for every 100 m ³ of water treated), using 8% -10% NaCl solution, with a regeneration cycle of approximately 90 minutes.
First Stage Reverse Osmosis
Desalination principle: The high-pressure pump (0.8-1.5 MPa) drives the raw water through a reverse osmosis membrane (such as Dow BW30), with a desalination rate of ≥ 95% and a water conductivity of ≤ 50 μ S/cm (when the TDS of the raw water is less than 2000 mg/L).
Key parameters: The membrane element produces 0.5-1 m ³/h of water per unit, with a recovery rate of 60% -80%. The concentrated water needs to be treated before being discharged or reused.
Stainless Steel Water Tank
Design standard: Made of 304/316L stainless steel, with inner wall electrolytic polishing (Ra ≤ 0.6 μ m), equipped with liquid level control, air respirator, and CIP automatic cleaning system to prevent secondary pollution.
Capacity range: customizable from 1-1000 m ³ to meet different water usage needs of different scales.
Ultraviolet Sterilizer
Sterilization mechanism: Ultraviolet light with a wavelength of 254 nm destroys microbial DNA/RNA, with a sterilization rate of ≥ 99.9%, suitable for scenarios such as drinking water and food processing that are sensitive to microorganisms.

2、 Processing procedures and water quality indicators
plaintext
Raw water → Quartz sand filtration → Activated carbon adsorption → Softening and hardness removal → Precision filtration (5 μ m) → Primary reverse osmosis → UV sterilization → Stainless steel water tank → Water point
Turbidity (NTU), residual chlorine (mg/L), hardness (CaCO3, mg/L), conductivity (μ S/cm), total bacterial count (CFU/mL) during the processing stage
Raw water ≤ 20 ≤ 1.0 ≤ 500 ≤ 2000 ≤ 1000
Pre treated (sand filtration+carbon filtration+softening) ≤ 1 ≤ 0.05 ≤ 5 ≤ 1800 ≤ 100
RO water production ≤ 0.5 ≤ 0.02 ≤ 1 ≤ 50 ≤ 10
UV sterilization ≤ 0.5 ≤ 0.02 ≤ 1 ≤ 50 ≤ 1
3、 Application scenarios
Industrial production field
Electronic semiconductor: chip cleaning water (conductivity ≤ 10 μ S/cm), compatible with EDI to produce ultrapure water (resistivity ≥ 18 M Ω· cm).
Food and beverage: Process water that meets the GB 5749 standard, used for juice preparation, beer brewing, and aseptic filling.
Chemical energy: boiler feedwater (hardness ≤ 0.03 mmol/L), circulating cooling water (conductivity ≤ 300 μ S/cm), to reduce equipment scaling and corrosion.
Civil and commercial scenarios
Community direct drinking water system: The water is equipped with ultraviolet sterilization, with a conductivity of ≤ 50 μ S/cm, meeting the demand for direct drinking.
Rural drinking water renovation: treating high hardness and high turbidity groundwater, removing scale, odors, and microorganisms.
special industries
Laboratory water: As a basic equipment for pure water, it can be connected to ultra pure water machines for precision experiments in the future.
Offshore platform: Processing pre treated seawater desalination water to meet the water needs of ships or islands.

4、 Technological advantages and innovative design
Fully automated operation
PLC integrated control: linkage sand filter/carbon filter backwash, softening regeneration, RO start stop and ultraviolet sterilization, supporting remote monitoring (Modbus protocol).
Intelligent logic: sand filter/carbon filter backwash and softening regeneration are executed in a staggered manner to avoid sudden drops in system flow; RO dynamically adjusts based on the pure water tank level (low start high stop) and water quality (automatic flushing for conductivity exceeding the standard).
Multi level purification collaborative efficiency
Physical filtration (sand filtration)+chemical adsorption (carbon filtration)+ion exchange (softening)+membrane separation (RO)+sterilization (UV), layer by layer purification ensures stable water quality.
Anti water quality fluctuation: Pre treatment efficiently removes suspended solids, residual chlorine, and hardness, RO influent SDI ≤ 5, and membrane fouling risk is reduced by more than 30%.
Energy saving and environmentally friendly design
High voltage pump frequency conversion control: energy consumption as low as 1.5 kWh/m ³, saving 20% energy compared to traditional systems;
Concentrated water reuse: When TDS<1000 mg/L, it can be reused for green irrigation. When TDS>3000 mg/L, zero emissions can be achieved through evaporation crystallization;
UV sterilization has no chemical residue, and the stainless steel water tank material meets food grade standards (FDA, NSF 61).
5、 Maintenance and Fault Management
1. Regular maintenance plan
Component maintenance content cycle
Check the loss of filter material in quartz sand/activated carbon filters, replenish quartz sand/replace activated carbon every six months/every year
Softening resin testing exchange capacity, regeneration or replacement every 2-3 years
Chemical cleaning of RO membrane components (acid descaling/alkaline organic matter removal) every 6-12 months
Clean the surface of the ultraviolet lamp tube and test the light intensity monthly
Stainless steel water tank cleaning and disinfection, verification of liquid level sensor every quarter
2. Common troubleshooting 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 ℃
Softened water with excessive hardness, resin failure/abnormal regeneration program, resin replacement/reset regeneration parameters
Insufficient UV intensity, aging of lamp tube/surface scaling, replacement of lamp tube/wiping with alcohol
The water quality of the water tank is clogged with bacteria and the air respirator is not thoroughly cleaned. Replace the filter element and increase the frequency of CIP cleaning

6、 Selection and configuration suggestions
Select based on water production rate
Small system: 1-10 m ³/h (laboratory, small factory), power 5-15 kW, occupying 5-10 m ²;
Medium sized systems: 20-50 m ³/h (residential areas, food factories), requiring a 50-100 m ³ water tank with a power of 20-30 kW;
Large scale system:>100 m ³/h (industrial park), multiple sets of membranes connected in parallel, equipped with a central monitoring platform, power>50 kW.
Targeted configuration of raw water quality
High sulfate water quality (SO ₄² ⁻>500 mg/L): The softening device uses sulfate type resin or adds scale inhibitors;
High silica water quality (SiO ₂>50 mg/L): Silicon dispersant is added before RO to prevent silica scaling;
Seawater/brackish water (TDS>3000 mg/L): Upgraded to secondary RO or equipped with energy recovery devices (such as PX pumps).
Security and Explosion proof Upgrades
Flammable and explosive environments (such as chemical plants): Choose explosion-proof high-pressure pumps, solenoid valves, and PLC control cabinets (explosion-proof grade Ex d IIC T6);
Food and pharmaceutical industry: Water contact parts are made of 316L stainless steel, which meets GMP standards.
summarize
This water treatment system achieves efficient conversion from raw water to high-quality water through a full process design of “pretreatment+softening+RO+sterilization”, especially suitable for scenarios with strict requirements for automation, water quality stability, and microbial control. Its core value lies in the intelligent control of the entire process, efficient multi-level filtration collaboration, low operation and maintenance costs, and the ability to adapt to different water quality challenges through flexible configuration. It is the preferred solution for industrial and civil water treatment fields.