High Pressure RO Pump for ZLD & MLD – Up to 90% Efficiency

To improve water reuse and reduce industrial wastewater discharge, Zero Liquid Discharge (ZLD) and Minimal Liquid Discharge (MLD) have emerged as efficient wastewater treatment technologies. The high pressure RO pumps for ZLD & MLD are constructed from robust and highly durable non-corrosive materials, ensuring long-term reliability and low operating costs throughout their service life. These pumps are positive displacement pumps with axial plungers that deliver a fixed volume of water per cycle, achieving efficiency levels of up to 90% across all operating positions. They are specifically engineered to maximize performance in ZLD and MLD applications. Moreover, their streamlined design simplifies installation, inspection, and maintenance. Capable of oil-free operation, they eliminate contamination risks, further enhancing environmental sustainability and operational ease.

Specification
Working Principle
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Specification

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Table 1: AHPP W HC 15–30 Technical Parameters
Pressure
Pump size		AHPP W HC 15/750	AHPP W HC 21/1000	AHPP W HC 24/1200	AHPP W HC 30/1200
Code number AHPP		180B5000	180B5001	180B5002	180B5003
Geometric displacement	cm³/rev.	362	362	362	444
Geometric displacement	in.³/rev.	22.09	22.09	22.09	27.09
Max.outlet pressure continuous	barg	120
Max.outlet pressure continuous	psig	1740
Min. outlet pressure	barg	30
Min. outlet pressure	psig	435
Inlet pressure continuous	barg	2–5			2.5–5
Inlet pressure continuous	psig	29–72.5			36–72.5
Max. inlet pressure peak	barg	10
Max. inlet pressure peak	psig	145
Speed
Min. speed continuous	rpm	500
Max. speed continuous	rpm	750	1000	1200	1200
Typical flow
500 rpm at max. pressure	m³/h	11	11	11	13
750 rpm at max. pressure	m³/h	15	15	15	20
1000 rpm at max. pressure	m³/h	–	21	21	27
1200 rpm at max. pressure	m³/h	–	–	25	31
Technical specifications
Media temperature	°C	2–50
Media temperature	°F	36–122
Ambient temperature	°C	0–50
Ambient temperature	°F	32–122
Weight (dry)	kg	105
Weight (dry)	lb	231
Max. sound pressure level	dB(A)	85
Footprint with IEC motor	m²	0.76	0.83	1.10	1.10
Footprint with IEC motor	foot²	8.18	8.93	11.84	11.84
Typical motor size
Max. speed at max. pressure	kW	75	90	110	110
Max. speed at max. pressure	HP	100	125	150	150
Torque at max. outlet pressure	Nm	740	740	740	761
Torque at max. outlet pressure	lbf-ft	546	546	546	561

Working Principle

The high pressure RO pump creates periodic volume changes in the pump chamber through the linear motion of a reciprocating plunger, enabling the suction and discharge of liquid. When the main shaft rotates, the plunger within the cylinder reciprocates under the action of the inclined disk. When the plunger moves outward, the volume of the plunger chamber increases, creating a negative pressure that draws in low-pressure water through the inlet of the distribution plate (blue section); When the plunger moves inward, the chamber volume decreases, water is pressurized and delivered through the outlet of the distribution plate to the RO membrane system (red section) to provide sufficient pressure to push water molecules through the membrane while retaining salts and contaminants, thus achieving the desalination process.

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Here are product catalogue and data sheet for your reference. more information just contact us.