Quartz Sand Filter Active Carbon Filter Precision Filter One Stage Reverse Osmosis Fully Automatic Stainless Steel New Machine
Product description
This equipment is an integrated fully automatic pure water preparation system, made of all stainless steel material (304 or 316L), and efficiently removes suspended solids, organic matter, residual chlorine, salt, and microorganisms from water through a combination of “pretreatment+first stage reverse osmosis” process. It is widely used in scenarios such as food and beverage, pharmaceutical intermediates, laboratories, and small industries that require high water quality and equipment durability. The following provides a detailed explanation from three aspects: system composition, working principle, and core advantages:
1、 Core components and functions of the system
1. Quartz sand filter (pre-treatment first stage)
Construction: 304 stainless steel tank body (diameter 300-1000mm, customized according to water production), filled with gradient quartz sand filter material (upper coarse sand 0.8-1.2mm, lower fine sand 0.5-0.8mm), equipped with stainless steel automatic control valve (controlling filtration and backwashing process).
Core functions:
By mechanically intercepting and removing suspended impurities such as sediment, rust, algae, and colloidal particles from water, the turbidity is reduced from 10-30NTU to ≤ 1NTU;
Protect subsequent filter materials (activated carbon, reverse osmosis membrane) to avoid scratches or blockages caused by large particle impurities;
Fully automatic backwashing: When the inlet and outlet water pressure difference is greater than 0.05MPa or timed for 12 hours, automatic backwashing (water flushing+air flushing optional) is started to restore the filtering ability of the filter material.
2. Activated carbon filter (pre-treatment second stage)
Construction: Stainless steel tank made of the same material, filled with high iodine value coconut shell activated carbon (specific surface area ≥ 1000m ²/g), and controlled in conjunction with a quartz sand filter.
Core functions:
Adsorption of organic matter (such as pesticide residues, industrial solvents), residual chlorine (removal rate>99%), odors, and pigments in water;
Reduce COD (chemical oxygen demand) in water to avoid organic pollution of reverse osmosis membranes;
Protect the RO membrane from residual chlorine oxidation (chlorine can damage the chemical structure of the polyamide membrane) and extend the membrane life to 2-3 years.
3. Precision filter (security filter)
Construction: Stainless steel shell, built-in 5 μ m PP melt blown filter element (3-5 pieces, configured according to flow rate), quick opening top cover design (easy to replace filter element).
Core functions:
Retain fine particles (such as activated carbon powder and colloids) remaining after pre-treatment, ensuring that the inlet particle diameter is ≤ 5 μ m;
As the ‘last line of defense’ for reverse osmosis membranes, it reduces the risk of membrane fouling and ensures the stable operation of the RO system.
4. Primary reverse osmosis system (core desalination unit)
High pressure pump: made of 316L stainless steel material (resistant to slight corrosion), designed as a multi-stage centrifugal pump, providing a stable pressure of 1.0-1.5MPa, and equipped with a variable frequency controller (energy-saving by 30%).
Reverse osmosis membrane components:
Membrane element: Imported roll type composite membrane (such as Dow BW30-400FR or equivalent quality), with a single desalination rate of ≥ 99.5%;
Membrane shell: Made of stainless steel material (pressure resistance ≥ 2.0MPa), the number of membrane shells is configured according to the water production capacity (such as 2-3 membrane shells per day for 10 tons of water).
Automatic control system:
PLC+touch screen operation, real-time display of water production, conductivity, pressure and other parameters;
Automatic functions: Low pressure flushing during startup (1 minute, washing away impurities on the film surface), high/low pressure protection, automatic discharge of excess produced water, and shutdown due to water shortage.
5. Auxiliary system
Pure water tank: made of 304 stainless steel material, with a capacity of 1-2 times the water production rate (such as 100L/h equipment with a 200L water tank), equipped with a liquid level sensor (linked to RO system start stop);
Pipes and valves: all stainless steel pipes (made of 304 material), sanitary grade quick connect fittings (easy to clean and disinfect), ensuring no secondary pollution of water quality;
Rack: Stainless steel square tube welded, surface brushed treatment, corrosion-resistant and beautiful, occupying a small area (such as about 1.5m x 0.8m for 100L/h equipment).
2、 Workflow
Preprocessing stage:
Raw water (tap water or groundwater) first enters a quartz sand filter to remove suspended impurities; The effluent enters the activated carbon filter to adsorb organic matter and residual chlorine; Subsequently, fine particles are intercepted through a precision filter to ensure clear inflow (SDI ≤ 5).
Reverse osmosis desalination stage:
The pre treated water is pressurized to 1.0-1.5MPa by a high-pressure pump and enters the first stage reverse osmosis membrane module:
Water molecules permeate through the membrane to form water (pure water, conductivity ≤ 50 μ S/cm), which enters the pure water tank;
Salt and impurities are intercepted to form concentrated water (with a valve controlling the discharge ratio and a recovery rate of 60% -75%).
Fully automatic operation:
The system automatically starts and stops based on the liquid level of the pure water tank (starting at low liquid level and stopping at high liquid level), regularly flushes the membrane components, and gives alarm prompts in case of faults (such as membrane fouling or filter blockage), without the need for manual intervention throughout the process.
3、 Core advantages
All stainless steel material: The tank body, pipeline, and frame are all made of stainless steel, which is corrosion-resistant, easy to clean, and meets food grade hygiene standards (especially suitable for drinking water and food processing scenarios).
Efficient desalination: The desalination rate of the first stage reverse osmosis membrane is ≥ 99.5%, which can treat tap water (TDS 100-500mg/L) into pure water (TDS ≤ 10mg/L), meeting the needs of direct drinking, experimental, and process water.
Fully automatic unmanned operation: from pre-treatment backwashing to RO water production, the entire process is controlled by PLC, suitable for small and medium-sized scenarios (no need for dedicated personnel to operate).
New equipment reliability: Brand new membrane components, pump valves, and control systems, with high initial water production efficiency (no attenuation), and free maintenance during the warranty period (usually 1-2 years).
4、 Applicable scenarios
Food and beverage industry: bottled water production, juice blending, beer brewing (water production complies with GB 19298-2014 standard).
Medicine and laboratory: water for physical and chemical experiments, cleaning of medical equipment (conductivity ≤ 50 μ S/cm, meeting the requirements of Class III water).
Commercial direct drinking water: Direct drinking water systems in office buildings, hotels, and schools (replacing bottled water, safer and more convenient).
Small scale industry: cosmetics production, electronic component cleaning (removing salt from water to avoid affecting product quality).
Technical parameter reference (taking equipment with a daily output of 100 tons as an example)
Project parameters
Water production capacity 4-5m ³/h
Inlet requirements: Municipal tap water or well water (turbidity ≤ 30NTU)
Water production conductivity ≤ 50 μ S/cm
Desalination rate ≥ 99.5%
Material: 304 stainless steel (in contact with water)
Power 5-7kW
Covering an area of 3-5 square meters
This device is the “cost-effective choice” for small and medium-sized pure water demand scenarios. The all stainless steel material ensures hygiene and durability, and the first level reverse osmosis achieves deep desalination. The fully automatic control reduces the operating threshold, making it suitable for users who have comprehensive requirements for water quality, equipment lifespan, and convenience.
