Jufu Water Technology Co., Ltd |
|
Water Purifying Machine Double Stage Reverse Osmosis Pure Water
Equipment
Reverse osmosis technology process
RO membrane itself is sensitive to the pH, temperature and specific
chemicals of the influent. The water quality of the influent
strictly requires the pH value range of 4~10, temperature <40℃,
silt density index SDI<5, free chlorine <0.1mg·L-1, turbidity
<1, iron content <0.1mg·L-1, etc. In order to meet the
requirements of RO membrane water, raw water before entering the RO
membrane system must first preprocessing (sedimentation,
coagulation and microfiltration, ultrafiltration, activated carbon
absorption, pH adjustment, etc.), then the pump pressure into the
membrane module, the pressure under the action of raw water as
water production through the RO membrane, and inorganic salts,
organic matter and particle by RO membrane intercept on the other
side of the membrane to form thick liquid. The concentrated
solution can be recycled or reprocessed according to the
requirements of the specific process. RO can be used with
ultrafiltration, nanofiltration and other membrane devices to form
an integrated membrane device.
Working Principle of Reverse Osmosis Water Treatment System:
When a pressure greater than osmotic pressure is applied on the
saltwater side of the membrane, the flow of water is reversed and
the water in the saltwater flows into the fresh side, a phenomenon
called reverse osmosis.
Technical Specifications of Reverse Osmosis Water Treatment System:
1000LPH Reverse Osmosis System | |
Model | JFRO-1000L |
Host Size | 1000x600x1600mm (can be customized) |
Power | 2.2KW |
Power Supply | 220V /380V/460V - 50Hz/60Hz,220V 50Hz can be customized |
Operating Pressure | 0.8-1.2MPa |
Recovery Rate | 50% |
Designed Water Inlet | 2000L/h |
Outlet Flow | 1000L/h |
Desalination Rate | ≥99.5% |
RO Frame | SUS304 |
Membrane Size | 4040 |
Membrane Elements | DOW /Hydranautics/Troy/ Vontron (Optional) |
Number of Membranes | 4 |
Raw Water Pump | CNP/NYP/GRUNDFOS (Optional) |
Raw Water Pump | CNP/NYP/GRUNDFOS (Optional) |
Tank Material | SS/FRP (Optional) |
Control Valve | Manual/Automatic |
Control Valve Brand | FLECK/RUNXIN |
Membrane Housing | SS/FRP (Optional) |
Pipe Material | U-PVC, Stainless steel (Optional) |
Process flow of reverse osmosis water treatment system:
Raw water → original water tank → original water pump → multi-media
filter (quartz sand filter)→ activated carbon filter → soft water
processor → precision filter → high pressure pump → first stage
reverse osmosis (RO) device → pure water tank → high pressure pump
→ second stage reverse osmosis → ultraviolet sterilization device →
water point
Operation process of reverse osmosis system equipment:
Strictly implement the operation steps in the operating procedures by operators.
In the first year of operation of the pretreatment system, experiments and adjustments should be carried out no less than 4 times according to the characteristics of the water source conditions for the operation indexes and the amount of chemicals added, so as to accumulate the basis for the operation procedures of the second year of border trimming.
In the process of operation, at least once a month to make a "water quality analysis report" to analyze the change of water source conditions, and timely modify the operation parameters and dosage.
The standardization of reverse osmosis data should be done every two weeks, which is very necessary to master the change trend of reverse osmosis operation. Many water treatment systems currently in operation lack corresponding work, which leads to the expansion of small problems in equipment operation.
Classic model of reverse osmosis system:
1. Preferential adsorption capillary pore model: No pore was found under weak point dry state electron microscope. The wet membrane specimens are not electron microscopic samples.
2. Dissolution diffusion model: no holes are considered.
3. Dry closed wet open model: the most appropriate modern reverse osmosis mechanism model that can explain the unity of models 1 and 2. The "dry-closed wet-open" reverse osmosis model unifies the two most classical reverse osmosis mechanism models, the fine pore model and the dissolved diffusion model.
FAQ:
1, What are the inlet water quality requirements for ro water
treatment system membrane components?
| NTU | SDI | Residual chlorine(mg/L) | Fe2+(mg/L) | TOC(mg/L) |
Limits | ≤1 | ≤5 | ≤4 | ≤3 |
2. What is the material of ro water treatment system membrane?
Acetate membrane (CA) : mainly because of its resistance to
chlorine, so it is still durable. But its suitable pH range is
small, easy hydrolysis
Aromatic polyamide membrane (PA) : water almost can not have
chlorine, only through a variety of pretreatment chlorine.
3. RO water treatment system configuration:
First-stage multi-stage process: if the recovery rate is not
achieved in the first stage (50-65% in the first stage and 65-75%
in the second stage), the multi-stage tandem filtration can be
used. The effective cross-sectional area of each segment decreases.
2:2 and 2:3 and 4:2:1
Multi-stage process: when the first stage process cannot meet the
effluent quality requirements (the first stage is generally
≤20μs/cm), the product water of the first stage process is sent to
another reverse osmosis unit.
The arrangement of membrane components can be divided into series
and parallel.