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DHP8.2 Seawater Pump And Water Treatment Pump

DHP8.2 is a high pressure pump for seawater reverse osmosis, and also of pumps for water treatment plants. It is one of our hot sale high volume high pressure water pumps.
  • DHP 8.2
  • YES
  • 8.2 m³/h
  • 700 rpm
  • 1800 rpm
  • 80 Bar
  • M42 x1.5, M42 x 1.5, Depth 22mm
  • Duplex / Super Duplex Stainless Steel
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Overview


The seawater pump and water treatment pump DHP8.2 is a type of fixed displacement axial piston pumps in which the flow is proportional to the number of revolutions of the input shaft and the pump displacement, regardless of any counter-pressure.


The DHP8.2 electric high pressure pump is designed to supply low viscosity and corrosive fluids under high pressure, e.g., in seawater reverse osmosis filtration applications and for high-pressure salt-water pumping.


The DHP8.2 electric high pressure pump is based on the axial piston principle enabling a very light and compact design, and it is designed so that lubrication of the moving parts in the high pressure water pump is provided by the fluid itself. No oil lubrication is thus required. All parts included in the DHP8.2 ro high pressure pump are designed to provide long service life, i.e., long service life with a constantly high efficiency and minimum of service required.


Benefits:


✔ Maintenance free due to water lubrication and direct drive (no belt or gearbox)

✔ High efficiency compared to any other pump on the market

✔ Small, compact and light design

✔ Small pulsation, no need for pulsation dampeners

✔ Wide speed control range

✔ Stainless steel design duplex (SAF 2205 / EN 1.4462 / UNS 31803) and super duplex (SAF 2507 / EN 1.4410 / UNS 32507) stainless steel

✔ Usually driven by an electric motor with coupling between pump and motor.


Application Possible:


• Coal Mine Wastewater

• Zero Liquid Discharge of Wastewater

• Seawater Desalination

• Landfill leachate


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Detailed Information




Name DHP 8.2 ro high pressure pump
Stock Status Usually Ships in 4 to 6 Weeks
Weight 32KG
Country of Origin China
Email For Price YES
Related Products Please go to DHP category


What is seawater reverse osmosis?


Seawater and saline aquifers account for 97.5% of all water on the Earth. Hence capturing even a tiny fraction could have a huge impact on water scarcity. seawater desalination now has expanded its use in coastal areas owing to all technological developments and decrease in cost. seawater desalination using semi-permeable sea water reverse osmosis (SWRO) membranes has gained momentum and currently dominates desalination markets. Seawater reverse osmosis systems are designed to decline more than 99% of saline compromised within the feed water. These systems also incorporate a rinsing, chemical purifying apparatus to eliminate sodium chloride, avert scaling, and preserve system performance. There are two fundamental elements within every seawater reverse osmosis system, which are and high pressure feed pumps. These elements make up the center of any reverse osmosis system and need special consideration and application for successful operation.


What is a water treatment pump?


Water treatment plants perform an essential function for the communities they serve. Making sure that these facilities operate at maximum efficiency without unexpected downtime can provide added protection for the environment and the most practical solutions for small towns and large cities alike. Positive Displacement Pumps are some of the most common types of industrial pumps found in water treatment facilities. Positive displacement pumps are designed to enclose and then force out a specific amount of fluid into a discharge pipe. Below you can see one of the application scenarios of our DHP8.2 pump: pressure requirement is 70bar, flow requires 8.2m³/h.


Electroplating-wastewater-p=70kg-DHP8.2          未标题-2






Why do you need to install a filter device before the ro high pressure pump?


In order to extend the service life of the high pressure water pump and maintain its pumping stability, please make sure that the medium working condition is consistent with the required working condition. In order to avoid particle wear on the high-pressure water pump, it is recommended to install an appropriate filter before it.


What kind of filter is suitable before the ro high pressure pump?


The main filter must filter 99.98% of particles above 10μm


How to avoid cavitation and dry running of ro high pressure pump?


It is recommended that you install a low-pressure protection switch before the high pressure pump inlet. Please refer to the parameter table in the technical specifications of the high-pressure water pump for the minimum inlet pressure of different types of pumps; Ensure that the inlet pipe is not smaller than the inlet diameter of the high-pressure water pump.


What are the requirements for the frequency converter?


If the high-pressure water pump is used with a frequency converter, the frequency converter is required to be heavy-load constant torque, and the starting mode is constant torque starting. If the special frequency converter for water pump fan is not constant torque, it may not be able to drive the positive displacement water pump; For example, ABB's ACS510 series inverter may not be able to drive the DHP high pressure water pump. The same is true for other brands of water pump and fan-specific inverters, please pay attention to communicate with the inverter manufacturers for selection.


What do we need to pay attention to with this ro high pressure water pump?


Please pay attention to the continuous inlet pressure, maximum peak inlet pressure, maximum continuous outlet pressure, and minimum outlet pressure operating ranges of different types of high-pressure water pumps. For details, please refer to the parameter table in the high-pressure pump technical specification. Ensure that the pressure when the high-pressure water pump is running does not exceed the range required by the specification.


What are the precautions for startup commissioning of the ro high pressure pump?


Before starting the pump, it is recommended that you thoroughly flush the pipeline and system to remove any residues or foreign objects that may be present. It is strongly recommended that you drain the air from the pump and system.

Test whether the direction of the high-pressure pump is consistent with the arrow mark on the pump. “I” represent the inlet of the high-pressure water pump, and “O” represents the outlet of the high-pressure water pump.


How to maintain the ro high pressure pump?


For a short shutdown of the high-pressure water pump within 3 days, there is no need to flush while keeping the pump full of overflow medium.

If the high pressure water pump has been shut down for more than 3 days, it is recommended that you flush the pump with fresh water. When the high-pressure water pump has been shut down for more than 15 days, it is recommended that you flush the pump with fresh water containing fungicides.

If the high pressure water pump is running under conditions of high salt content, it is recommended that you flush the pump with fresh water every time you stop.


How should the pump run under conditions of high salt content?


If the pump is running under conditions of high salt content, it is recommended that you flush the pump with fresh water every time you stop it.


What to do if the pump has abnormal noise and vibration during operation?


If abnormal noise and vibration occur during the operation of the pump, please stop the high pressure piston pump immediately and perform maintenance on it.


What to pay attention to when the back-end valve is closed?


It is forbidden to start the high pressure piston pump when the rear valve is closed, otherwise it will cause the safety valve to work, or even the pipeline burst.


How to connect high pressure hose?


It is recommended that the pump outlet adopt a flexible connection method of high-pressure hose.


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