Regenerative Media Filter Air Scouring for Automated Cleaning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing water filtration systems for aquatics and recreational facilities face inefficiencies in removing organic contaminants and require frequent manual cleaning, leading to increased downtime and labor costs due to the buildup of particulate media on filter structures.
Innovation Solution
A regenerative media filter system with a gas distributor and inflatable bladder mechanism that mechanically agitates tube elements to detach and suspend particulate media, combined with a controller for automated operation modes to maintain optimal filtration performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual cleaning is performed frequently to remove particulate media buildup, then filtration performance is maintained, but downtime and labor costs increase
Solution Approach 1:
The system performs automatic backwashing and media regeneration without manual intervention. The controller automatically detects when backwashing is needed and executes the regeneration sequence, allowing the filter to clean itself and eliminate the need for manual cleaning operations.
Solution Approach 2:
The system implements periodic backwashing cycles to prevent particulate media buildup. By performing automatic regeneration at scheduled intervals or when differential pressure thresholds are reached, the system maintains filtration performance while minimizing downtime through automated operation.
2Reliability
If manual cleaning is performed frequently to remove particulate media buildup, then filtration performance is maintained, but labor costs increase
Solution Approach 1:
The automated backwashing and regeneration system eliminates the need for manual cleaning operations. The controller manages the entire process automatically, reducing labor requirements and associated costs while maintaining consistent filtration performance.
Solution Approach 2:
The system replaces manual mechanical cleaning operations with automated pneumatic and hydraulic mechanisms. Gas distributors deliver air streams to fluidize and lift media, while recirculation pumps handle water flow, substituting human labor with automated mechanical systems.
3Ease of operation
If gas is delivered to tube elements to lift and fluidize particulate media, then media is detached and suspended for removal, but system complexity increases
Solution Approach 1:
The system uses gas distributors to deliver pressurized air streams through the particulate media, creating fluidization and lifting effects. This pneumatic mechanism efficiently detaches and suspends media particles for removal through the drain, providing automated cleaning without complex mechanical moving parts.
Solution Approach 2:
The gas distribution system is divided into multiple gas distributors positioned at different locations within the filter vessel. Each distributor handles a specific zone, allowing independent operation and simplifying the overall system architecture by breaking down the complex media lifting function into manageable segments.
4Reliability
If the system operates in multiple modes (filtration, backwash, regeneration, rinsing), then filter functionality is restored and maintained, but control complexity increases
Solution Approach 1:
The controller monitors differential pressure across the filter media and uses this feedback to automatically determine when backwashing is required. The system adjusts its operation based on real-time conditions, transitioning between filtration, backwash, regeneration, and rinsing modes automatically without requiring complex manual control.
Solution Approach 2:
The single controller manages multiple operational modes (filtration, backwash, regeneration, rinsing) using a unified control architecture. This multi-functional approach consolidates what could be multiple separate control systems into one device, reducing overall control complexity while maintaining comprehensive filter functionality restoration.
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
Reduces the need for manual cleaning, extends filter life, and maintains efficient filtration by automatically adjusting operation modes to restore filter functionality, thereby minimizing downtime and labor costs.
Implementation Method 1
delivering an effective volume of gas to the plurality of tube elements in an aeration mode for a third period of time sufficient to lift and fluidize the particulate media
Implementation Method 2
an inflatable bladder operatively connected to the tube sheet and configured to mechanically agitate the tube sheet within the regenerative media filter vessel upon inflation and deflation
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
A water filtration system is also disclosed. The water filtration system includes a regenerative media filter vessel, a filtrate line, a feed line, a recirculation line, a gas line, and at least one pump. A method of filtering water in a system comprising a regenerative media filter is disclosed. The method includes operating the system in a filtration mode, operating the system in a cleaning mode responsive to a differential pressure measurement across the regenerative media filter, operating the system in an aeration mode, operating the system in a pre-filtration mode after operating the system in the cleaning mode, operating the system in a drain mode, and operating the system in the filtration mode following the drain mode. A controller and non-transitory computer-readable medium having computer-readable signals stored thereon that define instructions that, as a result of being executed by the controller, instruct the controller to perform a method of operating a water filtration system are disclosed.