Wastewater Reactor Segmentation for Dynamic Oxygen Zone Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for creating discrete anaerobic, anoxic, and aerobic environments in wastewater treatment are limited in their ability to dynamically adapt to real-time conditions and require significant lag time for environmental transitions.
Innovation Solution
A system with a reactor unit containing mixing devices and aerators, controlled by a controller, allows for the dynamic transition between anaerobic, anoxic, and aerobic environments within sub-volumes of the reactor, enabling independent activation and deactivation of mixing and aeration devices to adjust environments instantaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed walls, baffles, or barriers are used to create discrete anaerobic, anoxic, and aerobic environments, then the reactor structure is stable and easy to manufacture, but the system cannot dynamically transition between different environmental conditions
Solution Approach 1:
The patent applies the dynamics principle by replacing fixed physical barriers with dynamically controllable mixing devices and aerators. These devices can be selectively activated or deactivated to transform the reactor environment from one state (e.g., aerobic) to another (e.g., anaerobic) without requiring physical restructuring. The mixing devices create anaerobic conditions by preventing oxygen dissolution, while aerators create aerobic conditions by introducing oxygen, allowing the same physical space to serve multiple functional purposes throughout operation.
Solution Approach 2:
The patent implements parameter changes by controlling operational parameters (mixing intensity, aeration rate) rather than physical structure. By adjusting the operational state of mixing devices and aerators, the system changes the chemical environment (oxygen concentration, redox potential) within the reactor. This allows flexible transition between anaerobic, anoxic, and aerobic conditions using the same reactor configuration, eliminating the need for complex movable walls or barriers.
2Adaptability or versatility
If independent mixing and aeration equipment are used to create different environments, then the system can transition between conditions, but the device complexity and energy consumption increase
Solution Approach 1:
The patent applies universality by designing mixing devices that serve multiple functions: they can provide mechanical mixing for homogenization, create anaerobic conditions by preventing oxygen dissolution, and potentially assist in phase separation. Similarly, aerators serve both aeration functions and can influence mixing patterns. This multi-functionality reduces the need for separate dedicated equipment for each environmental condition, thereby reducing overall energy consumption while maintaining the ability to transition between anaerobic, anoxic, and aerobic environments.
3Speed
If physical barriers are used to segment reactor volumes, then the environments are stable, but the response time to change conditions is slow
Solution Approach 1:
The patent replaces the mechanical system of physical barriers with a field-based approach using mixing devices and aerators. Instead of moving physical walls to change environments, the system uses fluid dynamics and gas transfer fields to create and maintain different environmental conditions. This substitution enables rapid response to control signals while maintaining environmental stability through continuous mixing and aeration control, resolving the contradiction between fast response time and environmental 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
Facilitates rapid and dynamic adjustments to treatment environments based on real-time conditions, optimizing treatment processes for wastewater by minimizing lag time and enhancing efficiency in nutrient removal and energy usage.
Implementation Method 1
a first set of a plurality of mixing devices positioned within a first sub-volume of wastewater
Implementation Method 2
a first set of a plurality of aerators positioned within a first sub-volume of wastewater
Implementation Method 3
improving the removal of organic material, nutrients, and phosphorus
Implementation Method 4
dynamically transition some or all of that volume between two or more of anaerobic, anoxic, fermentation, suboxic, and aerobic environments
Data Source
AI summary
Systems and methods for enabling dynamic volumetric transitioning and segmentation of treatment conditions are disclosed. Such treatment conditions may include, by way of example, systems and methods for dynamically transitioning treatment environments within a reactor for activated sludge treatment processes. Such environments may include anaerobic, anoxic, fermentation, suboxic, and aerobic environments.