Liquid Purification System with Pneumatic Recirculation
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Solution Overview
Problem
Existing liquid purification systems with recirculation and air starting face inefficiencies due to periodic filtration processes, high energy consumption, and reduced raw liquid utilization rates, leading to fluctuations in impurity concentration and purification efficiency.
Innovation Solution
A three-stage pneumatically-started liquid filtration cycle with continuous recirculation, utilizing compressed gas or gas-liquid mixture energy to maintain high liquid flow velocity and return all drain liquid before cycle completion, incorporating a gas and liquid-impermeable partition for energy recovery and antiscalant dosing, and featuring a system of valves for efficient energy conversion and liquid management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If periodic filtration is used with recirculation and air starting, then the system can operate with compressed gas energy, but the filtration process becomes intermittent causing fluctuations in impurity concentration and reduced purification efficiency
Solution Approach 1:
The patent implements continuous filtration by maintaining constant pressure in the recirculation unit through a pressure maintenance device that continuously supplies compressed gas or gas-liquid mixture, eliminating the periodic operation mode. This ensures continuous liquid flow through the filtration unit and maintains stable impurity concentration, resolving the contradiction between energy consumption and purification efficiency.
Solution Approach 2:
The system dynamically adjusts the compressed gas supply to maintain optimal pressure levels in the recirculation unit during continuous operation. The pressure maintenance device regulates gas supply based on real-time system conditions, enabling continuous filtration while optimizing energy consumption through dynamic control rather than static periodic operation.
2Productivity
If compressed gas energy is used to maintain pressure in the recirculation unit, then continuous filtration is enabled, but energy consumption increases
Solution Approach 1:
The system uses the kinetic energy of the liquid flow itself to assist in maintaining pressure and driving the filtration process. The liquid flow generated during filtration contributes to the overall pressure maintenance, reducing the amount of compressed gas energy required compared to purely pneumatic systems. This self-service mechanism lowers energy consumption while maintaining high liquid flow velocity.
Solution Approach 2:
The patent combines pneumatic (compressed gas) and hydraulic (liquid pressure) systems to maintain pressure in the recirculation unit. The pressure maintenance device supplies compressed gas that works together with the liquid flow pressure to maintain optimal operating conditions. This hybrid approach allows continuous filtration with reduced energy consumption by utilizing both gas compression and liquid pressure rather than relying solely on compressed gas.
3Loss of substance
If drain liquid is returned to the raw liquid container, then raw liquid utilization increases, but impurity concentration fluctuations occur
Solution Approach 1:
The system implements feedback control by continuously monitoring impurity concentration in the liquid and adjusting the filtration process accordingly. The pressure maintenance device and valve system regulate the return of drain liquid to the raw liquid container based on real-time impurity levels, ensuring that raw liquid utilization is maximized while maintaining stable impurity concentration through feedback-based control.
Solution Approach 2:
The patent changes operating parameters such as pressure, flow rate, and gas supply rates to control impurity concentration while maximizing raw liquid utilization. By dynamically adjusting these parameters through the pressure maintenance device and valve system, the system can return drain liquid to the raw liquid container without causing harmful fluctuations in impurity concentration, resolving the contradiction between utilization and stability.
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 enhances energy efficiency, maintains high liquid flow velocity, and uniformly increases impurity concentration, improving purification efficiency and raw liquid utilization while reducing energy consumption and impurity concentration fluctuations.
Implementation Method 1
imparting a compressed gas or compressed gas and liquid mixture energy to the recirculation unit by means of a pressure generation means, said energy establishing a liquid recirculation unit pressure sufficient for liquid filtration
Implementation Method 2
a filtration unit consisting of at least one reverse osmosis device
Data Source
AI summary
The present liquid purification method, carried out with the aid of a liquid purification system, includes a three-stage liquid filtration cycle, during which all of the drain liquid can be continuously fed back into the purification system until the liquid filtration cycle is complete. During this continuous recycling, a high liquid flow rate is maintained, and the feed rate of the liquid can be controlled during the continuous mixing of initial liquid and drain liquid. The common aim of this subject matter and the technical result achieved in the use of same is the development of a novel energy-efficient method and system for purifying liquids which makes it possible to improve the energy-efficiency of liquid purification while simultaneously increasing the degree of purification and the extent to which the initial liquid is used.