Ozone Filter for Dialysis Water Sterilization
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Solution Overview
Problem
Existing ultrapure water systems in dialysis face challenges in preventing microbial contamination efficiently and cost-effectively, as ozone treatment, although effective, is complex and energy-intensive, leading to its limited use.
Innovation Solution
Incorporating an ozone filter downstream of the reverse osmosis system to adsorb and neutralize ozone, using an activated carbon filter for ozone destruction, and employing an electrolytic ozone generation system to introduce ozone into the ultrapure water stream, ensuring sterile conditions and effective endotoxin destruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ozone is introduced into ultrapure water for disinfection, then microbial contamination is prevented, but residual ozone remains harmful and requires additional destruction steps
Solution Approach 1:
An ozone filter is introduced as an intermediary component between the ozone injection point and the ultrapure water outlet. The filter contains activated carbon or other ozone-decomposing materials that catalytically break down residual ozone into oxygen, thereby eliminating the harmful residual ozone while preserving the disinfection benefits
Solution Approach 2:
The harmful residual ozone is extracted or removed from the ultrapure water stream through the ozone filter. The filter selectively targets and decomposes only the residual ozone without interfering with the already achieved disinfection effect, separating the beneficial disinfection function from the harmful residual presence
2Object-affected harmful factors
If UV light is used to destroy residual ozone, then ozone is eliminated, but electrical energy is continuously required and system complexity increases
Solution Approach 1:
The electrical UV light system is replaced with a passive chemical/catalytic system. Instead of using electromagnetic radiation requiring continuous power, the patent employs activated carbon filters or catalytic materials that naturally decompose ozone through adsorption and catalytic reactions, eliminating the need for electrical energy input
Solution Approach 2:
The ozone filter operates autonomously without external energy input. The activated carbon or catalytic materials in the filter self-sustain the ozone decomposition process through their inherent chemical properties, breaking down residual ozone as water flows through the filter without requiring pumps, lights, or other energy-consuming components
3Reliability
If conventional disinfection methods are used, then microbial control is achieved, but cost-effectiveness is reduced due to high energy consumption
Solution Approach 1:
Energy-intensive electrical disinfection systems (UV lights, ozone generators requiring continuous operation) are replaced with a passive activated carbon filtration system. The filter uses adsorption and catalytic decomposition mechanisms that do not require electrical energy, thereby dramatically reducing operational costs while maintaining effective microbial control through the initial ozone treatment
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
This approach provides a simple, cost-effective method to prevent microbial contamination by ensuring ozone is safely removed from ultrapure water, maintaining sterility and destroying endotoxins, thus protecting dialysis patients from ozone-related risks.
Implementation Method 1
an ozone filter is provided, which is arranged downstream of the outlet of the reverse osmosis system and removes ozone introduced by the device for introducing ozone
Implementation Method 2
A system with electrolytic ozone generation is advantageously used as the device for introducing ozone. At least a partial flow of the water to be treated is passed through a DC voltage cell in which the water is broken down into oxygen and hydrogen. Part of the oxygen formed is converted to ozone with the help of a catalyst.
Implementation Method 3
a reverse osmosis system, which has an inlet for fresh water and an outlet for ultrapure water
Data Source
AI summary
The invention relates to a system for producing ultra-pure water in dialysis, comprising a reverse osmosis system, which has an inlet for fresh water and an outlet for ultra-pure water, and a device for introducing ozone, wherein an ozone filter, in particular an activated carbon filter, is provided, which is arranged downstream of the outlet of the reverse osmosis system and removes introduced ozone again.