Granule Sludge Supply Control for Phosphorus Removal Recovery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
During biological treatment of phosphorus-containing water, the phosphorus removal performance often drops when phosphorus concentration varies, leading to a prolonged recovery time.
Innovation Solution
A phosphorus-containing water treatment method and device that involve a continuous biological treatment step, granule sludge formation, and controlled sludge supply based on phosphorus removal performance, ensuring quick recovery of phosphorus removal efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional biological treatment is used, then phosphorus removal is achieved, but recovery time after performance drop is prolonged
Solution Approach 1:
The system performs preliminary action by maintaining a granule sludge reservoir that is pre-formed and ready for rapid deployment. When phosphorus removal performance deteriorates, the granule sludge can be immediately supplied to the continuous biological treatment tank without waiting for sludge formation, enabling quick recovery of treatment performance
Solution Approach 2:
The system dynamically adjusts the supply volume of granule sludge based on real-time phosphorus removal performance monitoring. The control unit increases granule sludge supply when performance deteriorates and reduces supply when performance is stable, optimizing both recovery speed and operational efficiency
2Speed
If granule sludge supply volume is increased to recover performance quickly, then recovery speed improves, but operational complexity increases
Solution Approach 1:
The system implements feedback control where the control unit continuously monitors phosphorus removal performance and automatically adjusts granule sludge supply volume accordingly. This closed-loop control enables automatic response to performance changes without requiring complex manual intervention or overly complicated control systems
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
The method and device enable rapid recovery of phosphorus removal performance by adjusting the sludge supply volume in response to changes in phosphorus removal efficiency, thereby maintaining effective treatment even with varying phosphorus concentrations.
Implementation Method 1
subjecting phosphorus-containing water to biological treatment using biological sludge
Implementation Method 2
utilizes an aggregate of microorganisms (an aerobic biological sludge) known as a floc
Data Source
AI summary
A phosphorus-containing water treatment method includes a continuous water flow biological treatment step of subjecting phosphorus-containing water to biological treatment using biological sludge while continuously feeding the phosphorus-containing water to a continuous biological treatment tank; a granule sludge formation step of forming granule sludge in a semi-batch biological treatment tank; and a sludge supply step of supplying the granule sludge formed in the semi-batch biological treatment tank to the continuous biological treatment tank through a sludge supply pipe. In the sludge supply step, the supply volume of granule sludge which is to be supplied to the continuous biological treatment tank is controlled based on the phosphorus removal performance in the continuous biological treatment tank.