Modular Reverse Osmosis Cartridge for Low-Maintenance Desalination
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Solution Overview
Problem
Conventional reverse osmosis systems for desalinating water are complex and costly to maintain, making them unsuitable for widespread use in private households, and they often require additional pre-treatment steps to prevent fouling and scaling, which limits their accessibility.
Innovation Solution
A modular reverse osmosis device with a detachable exchangeable unit integrated into a stationary base unit, allowing for easy installation and replacement of the membrane, combined with a blending device to mix permeate with saline water, and a control device to regulate flow rates, enabling efficient desalination with reduced maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional reverse osmosis systems are used for desalination, then effective salt removal is achieved, but device complexity and maintenance cost increase
Solution Approach 1:
The reverse osmosis system is divided into modular components: a replaceable cartridge containing the membrane element and a reusable housing with pump and control mechanisms. This segmentation allows the complex membrane component to be easily replaced without replacing the entire system, reducing maintenance complexity while maintaining effective salt removal.
Solution Approach 2:
The membrane cartridge is designed as a disposable or easily replaceable component with a limited service life. After a certain period or when performance degrades, the entire cartridge is replaced rather than serviced, simplifying maintenance procedures and reducing the need for complex repair systems while ensuring consistent desalination performance.
2Manufacturing precision
If conventional reverse osmosis systems are used for desalination, then salt content is reduced, but pre-treatment requirements increase complexity
Solution Approach 1:
The system includes integrated pre-filters that automatically perform preliminary water treatment before the water reaches the reverse osmosis membrane. This preliminary action removes particulates and chlorine that could damage the membrane, eliminating the need for separate complex pre-treatment systems while protecting the membrane and ensuring effective salt removal.
3Productivity
If conventional reverse osmosis systems are used for desalination, then permeate is produced, but maintenance requirements increase cost
Solution Approach 1:
The membrane cartridge is designed as a self-contained modular unit that can be replaced by the end user without requiring technical expertise or specialized service equipment. This segmentation transforms a previously complex maintenance task into a simple cartridge replacement, significantly improving ease of repair while maintaining continuous permeate production capability.
Solution Approach 2:
The system is designed to enable end-users to perform their own maintenance by simply replacing the cartridge when needed. The quick-connect interfaces and clear indicators make this self-service maintenance feasible for non-technical users, eliminating the need for professional service interventions and reducing overall maintenance costs while ensuring consistent permeate production.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution allows for effective desalination of water with over 90% salt reduction, suitable for industrial, commercial, and household use, with simplified maintenance and flexible water quality adjustment, making it more accessible and cost-effective.
Implementation Method 1
Reverse osmosis is a membrane separation process in which a saline raw water stream, often referred to as a feed stream, is passed under pressure along a semi-permeable membrane. The pressure is usually generated by a pump, the so-called feed pump. A part of the water penetrates the membrane, whereas a large part of the salts dissolved in the water are retained by the membrane.
Implementation Method 2
Reverse osmosis is a membrane separation process in which a saline raw water stream, often referred to as a feed stream, is passed under pressure along a semi-permeable membrane.
Data Source
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Figure 3A
AI summary
The invention relates to a device and a method for preparing salt-containing water by means of reverse osmosis, wherein the water is separated into a permeate flow and a concentrate flow. The device comprises an inlet for the water, an outlet for the permeate, an outlet for the concentrate, and a reverse osmosis device. The inlet and the outlets are integrated into a base unit which can be installed in a stationary manner. The reverse osmosis device is provided as a replaceable unit which is releasably connected to the base unit. A blending valve (118) is integrated into the base unit for the feed and the permeate.