Bioreactor Nutrient Dosing Control via Wastewater Flow Feedback
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The variability in industrial wastewater flow rate and nitrate levels makes it challenging for operators to maintain accurate dosing of nutrients in bioreactors, requiring constant monitoring and manual adjustments, which is inefficient and labor-intensive.
Innovation Solution
A bioreactor control system that measures incoming wastewater parameters, calculates, and automatically adjusts the dosing of nutrients like MicroC® and phosphoric acid, using a logic controller and user-friendly interface to maintain optimal ratios, switching from manual to automatic mode based on learned patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual monitoring and adjustment of nutrient dosing is used, then operators can maintain control over the process, but the system requires constant personnel intervention and is labor-intensive
Solution Approach 1:
The system enables self-service operation through automatic nutrient dosing based on real-time wastewater flow rate measurements. The controller automatically calculates and adjusts dosing rates without requiring operator intervention, allowing the system to serve itself while maintaining high dosing accuracy through continuous monitoring and automated control algorithms
2Manufacturing precision
If constant manual monitoring is performed, then dosing accuracy can be maintained, but the process becomes time-consuming and labor-intensive
Solution Approach 1:
The system implements continuous feedback control by measuring wastewater flow rate in real-time and automatically adjusting nutrient dosing rates accordingly. The controller receives ongoing data from flow meters and continuously modifies dosing commands to maintain optimal nutrient-to-wastewater ratios, eliminating the need for manual monitoring cycles while preserving high dosing accuracy through closed-loop control
Solution Approach 2:
The system ensures continuous useful action through uninterrupted monitoring and dosing operations. Flow meters continuously measure wastewater flow rate, and the controller continuously adjusts nutrient dosing without interruption or manual intervention, maintaining constant dosing accuracy throughout operation and eliminating time losses associated with manual adjustment cycles
3Manufacturing precision
If trained personnel are allocated for operation, then dosing can be manipulated accurately, but operational costs increase
Solution Approach 1:
The system replaces the mechanical system of human operators with an automated control system comprising controllers, flow meters, and dosing pumps. This substitution eliminates the need for trained personnel to manually manipulate dosing while maintaining high accuracy through electronic sensing and automated control algorithms, thereby reducing operational complexity and personnel requirements
4Productivity
If automated dosing is implemented, then personnel intervention is reduced, but the system complexity increases
Solution Approach 1:
The controller serves multiple functions within a single device: it receives flow rate data from flow meters, calculates appropriate dosing rates based on predetermined algorithms, commands dosing pumps to deliver nutrients, and monitors system status. This multi-functionality consolidates what could be multiple separate systems into one integrated controller, reducing overall system complexity while maintaining high operational efficiency and minimizing personnel intervention requirements
Data Source
AI summary
The present invention relates to a control system for a bioreactor. More particularly, this invention relates to a process and apparatus for reading the characteristics of an industrial waste water stream and dosing amount of nutrients that play a key role to help the microorganisms in the bioreactor work efficiently to remove impurities from the industrial wastewater stream.