Ⅰ. Technology Overview

The energy-efficient portable reverse osmosis (RO) desalination technology uses a manual pump to pressurize seawater above 4.5 MPa, allowing water molecules to pass through a 0.0001-micron RO membrane while removing salts, bacteria, viruses, and other contaminants to produce safe drinking water.

Its key innovation is an energy recovery manual high-pressure pump developed by Chimey. Unlike conventional designs that rely on multiple seals, this system uses the natural osmotic pressure difference across the membrane to drive the control valve, enabling automatic switching, reducing wear, and improving durability.

This significantly reduces the number of dynamic sealing components, fundamentally lowering leakage risk and improving system reliability by 2–3 times. The technology has been filed for an invention patent titled “A Hydraulic Directional Control Energy Recovery Method and Push-Type High-Pressure Pump” (CN120120309A).

Energy Recovery

2. Product Introduction

Building on the innovative energy recovery manual high-pressure pump technology, Chimey has developed a portable, single-user manual RO water purifier. Designed with a core focus on “power-free emergency use and high-efficiency portability,” the device is widely applicable in marine survival, field search and rescue, disaster response. Requiring no external power supply, it enables users to manually convert various water sources into safe drinking water, making it a critical solution for emergency water supply.

The unit adopts a reverse osmosis (RO) process, driven by a manual energy recovery pump for water intake and pressurization. Raw water is pressurized and fed into the RO membrane for separation. The concentrate stream passes through an energy recovery system, which recovers up to 90% of pressure energy and redirects it back into the pump chamber, further increasing membrane pressure and enhancing purification efficiency.

The system can stably treat seawater with salinity ≤ 35,000 mg/L, and is also suitable for rivers, lakes, brackish water, and contaminated surface water. The produced water has a salinity of 200–500 mg/L and meets the requirements of the “Standards for Drinking Water Quality” (GB 5749-2022).

CM-SFST-EST Portable Manual RO Water Purifier – Process Flow Diagram

Key Features

• Power-Free Emergency Operation

Requires no electricity or external tools—water can be produced entirely through manual operation,making it ideal for off-grid and emergency scenarios, especially maritime survival situations.

• Efficient & Low-Effort Operation

Equipped with an energy recovery manual high-pressure pump, capable of recovering up to 90% of pressure energy from the concentrate stream. This significantly reduces manual effort, with an operating force of less than 40 N, ensuring easy and efficient use.

• Reliable & Durable Design

Built for high reliability, with continuous operation of ≥200 hours without failure, suitable for long-term use in harsh environments. The highly integrated, compact, and lightweight design allows for easy transport and storage.

• High-Performance Purification

Utilizing RO technology, the system effectively removes salts, bacteria, viruses, and other harmful contaminants, ensuring safe, compliant drinking water and reliable supply in emergency conditions.

Portable Manual RO Water Purifier

3. Application

1) Marine Emergency Survival

We provide the CM-SFST-EST portable manual RO water purifier for integration into liferaft emergency systems. Installed in emergency kits, it enables survivors to manually produce drinking water on demand after abandoning ship, effectively overcoming limited freshwater storage and ensuring a reliable emergency supply.

2) Field support

We offer the CM-SFST-EST portable manual RO water purifier for field operations. Integrated into personal gear, it enables on-demand drinking water in off-grid environments such as training, patrols, and rescue missions. Requiring no power, it delivers a reliable emergency water supply, addressing challenges of limited portability, storage, and access to safe water in extreme conditions.

3) Emergency Disaster Response

After disasters such as earthquakes, floods, and typhoons, water sources are often contaminated and power is unavailable. The CM-SFST-EST portable manual RO water purifier provides a reliable solution, enabling both affected populations and rescue teams to produce safe drinking water on demand. It ensures a dependable supply where access to clean water is limited or unavailable.

4) Aviation Emergency

For in-flight emergencies, the CM-SFST-EST portable manual RO water purifier can be integrated into aviation survival equipment. In scenarios such as ditching at sea or landing in remote areas, it enables users to produce drinking water manually, ensuring a reliable emergency supply and extending survival time without power or access to clean water.