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RO High Pressure Pump for RO Plant, Seawater Reverse Osmosis

Leading Manufacturer For RO High Pressure Pump for Seawater Reverse Osmosis

10+ years' experience on axial piston pump manufacturer for high pressure RO applications​​​​​​​
Equipped with complete machining equipment​​​​​​​
Top-ranked quality control with 100% inspection rate​​​​​​​
Custom-made service available​​​​​​​
Reverse osmosis (RO) is a special type of filtration that uses a semi-permeable, thin membrane with pores small enough to pass pure water through while rejecting larger molecules such as dissolved salts (ions) and other impurities such as bacteria. 
 
Reverse osmosis is used to produce highly purified water for drinking water systems, industrial boilers, food and beverage processing, cosmetics, pharmaceutical production, seawater desalination, and many other applications. It has been a recognized technology for more than a century and commercialized since the 1960’s.
Reverse osmosis is a continuously operating treatment technology that uses pressure to pass source water through a thin membrane and thereby separate impurities from water. The desalinated water that is demineralized or deionized, is called permeate (or product) water. The water stream that carries the concentrated contaminants that did not pass through the RO membrane is called the reject (or concentrate) stream.

Reverse Osmosis works by using a RO high pressure pump to increase the pressure on the salt side of the RO and force the water across the semi-permeable RO membrane, leaving almost all (around 95% to 99%) of dissolved salts behind in the reject stream. The amount of pressure required depends on the salt concentration of the feed water. The more concentrated the feed water, the more pressure is required to overcome the osmotic pressure.
Water is the essential source of all life on the planet. With the growth of the world population, the availability of limited quantities of freshwater decreases. From the 71% earth surface water, 97.4% is seawater and 2.6% is freshwater. The average salt content in seawater is 3.5% – too much for human consumption. Turn Salt Water to Potable Water to Meet Urban, Industrial and Irrigational Needs.

Desalination is an ideal solution to bridge the growing water needs of the population and water scarcity worldwide. Desalination is a process for producing drinking water and service water from seawater. With the advances of desalination technologies, seawater has become an interesting water source to cope with the freshwater shortages. This process can be applied wherever a reliable source of water is needed.

Osmosis is a physical phenomenon by which two liquids, in different concentrations, separated by a semi-permeable membrane, come into contact and tend to even themselves out. The liquid with the lower concentration crosses the membrane toward that with the highest concentration. This process is inverted in reverse osmosis. We take in seawater, a highly concentrated solution, and force it through the membrane by adding pressure. On the other side, we obtain salt-free water, while back on the first side the remaining water still holds the salt the membrane prevented from passing through.

Features And Benefits

 Compact structure and high efficiency

Compared with other types of industrial high pressure water pumps with the same flow and pressure.

Easy to install

it can be directly installed on the motor or internal combustion engine, especially suitable for the Installation sites with sensitive space requirements.

High pressure

HPA/HPC series good high pressure water pumps: continuous working pressure 8Mpa.

Small pulse and low noise

The pulse at work is much smaller than other types of industrial high pressure water pumps, and the more pistons are, the smaller the pulse, the more consistent the work; the smaller the vibration is, and the smaller the noise.

Long service life

the materials used are all super wear-resistant and corrosion-resistant stainless steel and PEEK Material, the service life of the high-pressure pump can reach more than 8000 hours.

Easy to use

integrated backwash valve to simplify the design of reverse osmosis membrane system and save space and cost.

Maintenance-free

using medium water lubrication, no need to use lubricating oil, eliminating daily maintenance and the hidden danger of oil spill pollution, environmental protection.

Wide Application

Widely used in zero liquid discharge wastewater treatment, landfill leachate wastewater treatment, seawater desalination (RO) plant, coal mine wastewater treatment.

How To Choose A Fit RO High Pressure Pump

RO High Pressure Pump Data Sheet

Model 0.6 0.8 1.0 1.5 1.8 2.2 2.5 3.0 3.5 5.1 6.5 7.2 8.2 10.2
geometric displacement (cc/rev) 4.07 5.08 6.3 9.34 10.21 12.75 15.4 17.85 21.56 51.2 65.8 71.7 80.65 101.5
Minimum output pressure(barg) 20 20 20 20 20 20 20 20 20 20 20 20 20 20
Maximum output pressure(barg) 85 85 85 85 85 85 85 85 85 85 85 85 85 85
Continuous inlet pressure(barg) 0.5-5 0.5-5 0.5-5 0.5-5 0.5-5 0.5-5 0.5-5 0.5-5 0.5-5 0.5-5 0.5-5 0.5-5 0.5-5 0.5-5
Minimum speed (rpm) 700 700 700 700 700 700 700 700 700 700 700 700 700 700
Maximum speed (rpm) 3500 3500 3500 3500 3500 3500 3000 3500 3000 1800 1800 1800 1800 1800
700 rpm Flow at 85 bar  (m3/h) 0.12 0.17 0.22 0.3 0.34 0.45 0.57 0.64 0.76 1.70 2.30 2.58 3.00 3.86
1000 rpm Flow at 85 bar (m3/h) 0.22 0.29 0.36 0.54 0.58 0.75 0.90 1.03 1.24 2.8 2.58 4.00 4.64 5.85
1200 rpm Flow at 85 bar (m3/h) 0.25 0.33 0.42 0.58 0.64 0.84 1.03 1.18 1.39 3.21 4.18 4.70 5.45 6.88
1500 rpm Flow at 85 bar (m3/h) 0.34 0.43 0.54 0.8 0.87 1.10 1.34 1.55 1.88 4.20 5.38 6.00 6.95 8.86
1800 rpm Flow at 85 bar (m3/h) 0.4 0.52 0.65 0.92 1.0 1.27 1.58 1.80 2.11 5.04 6.45 7.22 8.30 10.50
2500 rpm Flow at 85 bar (m3/h) 0.58 0.75 0.94 1.31 1.42 1.80 2.22 2.55 2.98 - - - - -
3000 rpm Flow at 85 bar (m3/h) 0.71 0.91 1.14 1.60 1.73 2.18 2.68 3.07 3.58 - - - - -
3500 rpm Flow at 85 bar (m3/h) 0.83 1.06 1.32 1.84 1.99 2.52 - 3.56 - - - - - -
Max. Speed Power consumption@Max. bar (KW) 2.2 3.0 4.0 5.5 5.5 7.5 7.5 11 11 15 18.5 22 22 30
Fluid temperature (℃) 2-50 2-50 2-50 2-50 2-50 2-50 2-50 2-50 2-50 2-50 2-50 2-50 2-50 2-50
Ambient temperature (℃) 0-50 0-50 0-50 0-50 0-50 0-50 0-50 0-50 0-50 0-50 0-50 0-50 0-50 0-50
Noise (dB) 74 74 74 78 78 78 78 78 78 78 78 78 78 78
Weight (kg) 3.6 3.6 3.6 8.5 8.5 8.5 8.5 8.5 8.5 31.5 31.5 31.5 31.5 31.5
Integrated Rinsing Valve YES YES YES YES YES YES YES YES YES YES YES YES YES YES
Model 11 13 16 17 19 21 22 24 26 31 39
geometric displacement (cc/rev) 138.4 169.1 187.3 196.4 220.3 251.96 254.5 280.6 306.8 360 441.4
Minimum output pressure(barg) 10 10 10 10 10 10 10 10 10 10 10
Maximum output pressure(barg)@1500rpm 70 70 70 70 70 70 70 70 70 70 70
Maximum output pressure(barg)@1200rpm 85 85 85 85 85 85 85 85 85 85 85
Continuous inlet pressure(barg) 2-5 2-5 2-5 2-5 2-5 2-5 2-5 2-5 2-5 2-5 2-5
Minimum speed (rpm) 700 700 700 700 700 700 700 700 700 700 700
Maximum speed (rpm) 1500 1500 1500 1500 1500 1500 1500 1500 1500 1500 1500
700 rpm Flow at 85 bar (m3/h) 4.8 6 7.12 7.53 8.42 9.92 10.10 11.20 12.20 14.53 18.10
1000 rpm Flow at 85 bar (m3/h) 7.5 9.24 10.6 11.18 12.58 14.58 14.76 16.35 17.85 21.08 26.00
1200 rpm Flow at 85 bar (m3/h) 8.95 11 12.76 13.45 15.02 17.52 17.80 19.68 21.46 25.40 31.45
1500 rpm Flow at 70 bar (m3/h) 11.26 13.85 16 16.8 18.85 21.82 22.18 24.5 26.76 31.65 39.10
Max. Speed Power consumption@Max. bar (KW) 30 37 37 37 45 55 75 75 75 90 110
Fluid temperature (℃) 2-50 2-50 2-50 2-50 2-50 2-50 2-50 2-50 2-50 2-50 2-50
Ambient temperature (℃) 0-50 0-50 0-50 0-50 0-50 0-50 0-50 0-50 0-50 0-50 0-50
Noise (dB) 85 85 85 85 85 85 85 85 85 85 85
Weight (kg) 72 72 75 75 75 75 98 98 98 98 98
Integrated Rinsing Valve YES YES YES YES YES YES YES YES YES YES YES

Product Range:(electric high pressure water pumps for sale)

Pressure range: Max outlet pressure: 85 bar/1,232.5 psi.
Inlet pressure cont.: 0.5 - 5 bar/7.25 - 72.5 psi
Flow range (3000rpm): 0.71-1.14mᵌ/h, 11.83 - 19 l/min /3.07 - 4.94 gpm
Speed: 700 - 3,500 rpm
Pressure range: Max outlet pressure: 85 bar/1,232.5 psi.
Inlet pressure cont.: 0.5 - 5 bar/7.25 - 72.5 psi
Flow range (3000rpm): 1.6 - 3.58mᵌ/h, 26.66 - 59.66 l/min /6.93 - 15.51 gpm
Speed: 700 - 3,500 rpm
Pressure range: Max outlet pressure: 85 bar/1,232.5 psi.
Inlet pressure cont.: 0.5 - 5 bar/7.25 - 72.5 psi
Flow range (1500rpm): 4.20 - 8.86mᵌ/h, 70 - 147.66l/min /18.48 - 38.984 gpm
Speed: 700 - 1,800 rpm
Pressure range: Max outlet pressure: 70 bar/1,015.00 psi.@1500rpm; 85 bar/1,232.5 psi.@1200rpm
Inlet pressure cont.: 2 - 5 bar/29 - 72.5 psi
Flow range (1500rpm): 11.26 - 13.85mᵌ/h, 187.66 - 230.83l/min /49.54 - 60.94 gpm
Speed: 700 - 1,500 rpm
Pressure range: Max outlet pressure: 70 bar/1,015.00 psi.@1500rpm; 85 bar/1,232.5 psi.@1200rpm
Inlet pressure cont.: 2 - 5 bar/29 - 72.5 psi
Flow range (1500rpm): 16 - 21.89mᵌ/h, 266.66 - 364.83l/min /70.4 - 96.316 gpm
Speed: 700 - 1,500 rpm
Pressure range: Max outlet pressure: 70 bar/1,015.00 psi.@1500rpm; 85 bar/1,232.5 psi.@1200rpm
Inlet pressure cont.: 2 - 5 bar/29 - 72.5 psi
Flow range (1500rpm): 22.18 - 39.1mᵌ/h, 369.66 - 651.66l/min /97.59 - 172.04 gpm
Speed: 700 - 1,500 rpm

RO High Pressure Pump In Possible Applications

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RO High Pressure Pump Specifications Guide

Product Name RO High Pressure Pump HPA Model RO High Pressure Pump Weight [kg] RO High Pressure Pump Typical Flow [m3/h] RO High Pressure Pump Typical Speed [rpm] RO High Pressure Pump Speed Range [rpm]  RO High Pressure Pump Power @1500rpm @Max. Working Pressure Integrated flushing check valve Types of pumps RO High Pressure Pump Details
HPC0.6 RO PUMP AWS180B3048L 3.6 0.71 3000 700-3500 - Yes axial piston pumps View Detail <<
HPC0.8 RO PUMP AWS180B3037L 3.6 0.91 3000 700-3500 - Yes axial piston pumps View Detail <<
HPC1.0 RO PUMP AWS180B3049L 3.6 1.14 3000 700-3500 - Yes axial piston pumps View Detail <<
HPC1.5 RO PUMP AWS180B3043L 8.5 1.60 3000 700-3500 - Yes axial piston pumps View Detail <<
HPC1.8 RO PUMP AWS180B3044L 8.5 1.73 3000 700-3500 - Yes axial piston pumps View Detail <<
HPC2.2 RO PUMP AWS180B3045L 8.5 2.18 3000 700-3500 - Yes axial piston pumps View Detail <<
HPC2.5 RO PUMP AWS180B3046L 8.5 2.68 3000 700-3500 - Yes axial piston pumps View Detail <<
HPC3.0 RO PUMP AWS180B3030L 8.5 3.07 3000 700-3500 - Yes axial piston pumps View Detail <<
HPC3.5 RO PUMP AWS180B3032L 8.5 3.58 3000 700-3500 - Yes axial piston pumps View Detail <<
HPC5.1 RO PUMP AWS180B3005L 31.5 4.2 1500 700-1800 - Yes axial piston pumps View Details <<
HPC6.5 RO PUMP AWS180B3006L 31.5 5.38 1500 700-1800 - Yes axial piston pumps View Details <<
HPC7.2 RO PUMP AWS180B3007L 31.5 6 1500 700-1800 - Yes axial piston pumps View Details <<
HPC8.2 RO PUMP AWS180B3008L 31.5 6.95 1500 700-1800 - Yes axial piston pumps View Details <<
HPC10.2 RO PUMP AWS180B3010L 31.5 8.86 1500 700-1800 - Yes axial piston pumps View Details <<
HPC11 RO PUMP AWS180B3211L 72 11.26 1500 700-1500 30 Yes axial piston pumps View Details <<
HPC13 RO PUMP AWS180B3213L 72 13.85 1500 700-1500 37 Yes axial piston pumps View Details <<
HPC16 RO PUMP AWS180B3250L 75 16 1500 700-1500 37 Yes axial piston pumps View Details <<
HPC17 RO PUMP AWS180B3251L 75 16.78 1500 700-1500 37 Yes axial piston pumps View Details <<
HPC19 RO PUMP AWS180B3252L 75 18.85 1500 700-1500 45 Yes axial piston pumps View Details <<
HPC21 RO PUMP AWS180B3253L 75 21.89 1500 700-1500 55 Yes axial piston pumps View Details <<
HPC22 RO PUMP AWS180B3052L 98 22.18 1500 700-1500 75 Yes axial piston pumps View Details <<
HPC24 RO PUMP AWS180B3055L 98 24.5 1500 700-1500 75 Yes axial piston pumps View Details <<
HPC26 RO PUMP AWS180B3057L 98 26.76 1500 700-1500 75 Yes axial piston pumps View Details <<
HPC31 RO PUMP AWS180B3062L 98 31.65 1500 700-1500 90 Yes axial piston pumps View Details <<
HPC39 RO PUMP AWS180B3071L 98 39.1 1500 700-1500 110 Yes axial piston pumps View Details <<

Is centrifugal pump better than reciprocating pump?

You may face with the decision to use a reciprocating pump or a multi-stage centrifugal pump for a given application in the likes of Zero Liquid Discharge (ZLD) reverse osmosis system, seawater reverse osmosis system, high salt wastewater treatment plant. Let's make a simple comparison, depending on:
Comparison Items Multistage Centrifugal Pump Triplex Piston Pump RO High Pressure Pump AWS-HYDRO
Effectiveness
 
50-70% 70-80% >85%
Energy Consumption kWh/m³ Feedwater Flow 7.8 5.3 <4.0
Pressure Pulse
 
smooth fluctuate greatly (15%) relatively stable (2%-5%)
Environmental Pollution
 
No Contaminated with lubricating oil No
Maintenance Cycle
 
8000h 500-1000h 8000h
Cost
 
Low (1 set); High (Multistage) High Moderate
Pressure Range Low
Multistage centrifugal pump required
High High
Volume and Weight
10m³/h as an example
big, >152 kg big, >152 kg compact, flexible installation, 52 kg
Pump Set Accessories Requires belts and gearboxes to turn; Requires pulse absorbers; At least 4 times the volume of aws-hydro high pressure pump set Requires belts and gearboxes to turn; Requires pulse absorbers; At least 4 times the volume of aws-hydro high pressure pump set Direct motor connection, no need for belts and gearboxes; No pulse absorber required; Less than a quarter of the volume of a traditional piston pump set

Documents for China RO high pressure pump HPCS series

  • seawater 0.6-1.0 DATA BOOKLET -20230728 updated.pdf

  • seawater 1.5 - 3.5 DATA BOOKLET -20230728 updated.pdf

  • seawater 5.1-10.2 DATA BOOKLET -20230723 updated.pdf

  • seawater 11-13 DATA BOOKLET -20230728 updated.pdf

  • seawater 16-21 DATA BOOKLET -20230728 updated.pdf

  • seawater 22-39 DATA BOOKLET -20230728 updated.pdf

  • Generally, an RO plant for desalination consists of:
    - pre-treatment (Media Filter, Dosing units, Cartridge Filters)
    - RO section (H.P. Pump, Membranes/Vessels, CIP for membranes' cleaning)
    - post-treatment (Sanctification, pH correction)

     
    Regarding the Cartridge filters, they can be a single unit of 5 microns if the Media Filters have a 20-micron maximum sand size and it is multi-layers.

    Normally it's not necessary for the PSV (safety valve) on the suction line of the H.P. Pump but is ok the PT in order to avoid the low pressure.

    It's OK the bay pass on the H.P. Pump when the chemical washing is carried out.

    Normally a cartridge filter is located directly on the CIP skid so the chemical solution is already cleaned 5 microns and can be sent directly on the H.P. Pump suction.

    The PSV on the H.P. Pump discharge is not necessary if you install an HPT (High-Pressure Switch or Transmitter).
  • 3 parameters are important for SWRO, that is, temperature, recovery rate, and TDS, you have to keep them low as much as you can. If you increase RR 50 (which is too high say in Egypt to use it), then maybe fowling and repairing membrane within less than 1 year.... you have to consider when selecting membrane with TDS and RR. 
     
    So, in order to get a right selection of an SWRO pump, generally, we should know the parameters below: 
    1. What is the pumped medium? 
    2. What are the working pressure and flow rate? 
    3. What is the TDS, Temperature, RR, and Membrane pressure difference?

    ex. if one needs a pump + ERD for a plant 500CMD (20M3/H) product water for drinking, how would you select an SWRO pump? 

    Let's connect AWS-HYDRO
     
  • Piston Pump
    The produced water in one container is generally 200~500m³/d. A container may need to submit 200m3/d -300 - 400m3/d for RO membrane, should it be configured with an energy recovery device (ERD), one piece of the axial piston RO high pressure pump should satisfy the requirement. 

    Centrifugal Pump
    A pre-filter solution - mechanical self-cleaning filter in a 20'' container (capacity 300-600m3/h); another container in serial with 200-400m3/h - with H.P. pumps and recovery units; the last container will be 1-3 * 20'' or 40'' container with RO membrane to produce the freshwater according to the pre-filter solutions and H.P. pumps can give under different ro water conditions, so there will be many containers in serial. 

     

    A high-pressure centrifugal pump would suit the requirement, should it be configurated with an energy recovery device, the flow of one set H.P. pump still needs 200~400m3/h, but the centrifugal pump may be too big in size for a container, that is the question.

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