Mobile Phosphorus Recovery Plant Segmentation
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Solution Overview
Problem
Current phosphorus recovery methods are inefficient and often require significant structural changes to existing sewage treatment plants, and they may not effectively handle the contamination and depletion of rock phosphate reserves, necessitating a more efficient and adaptable solution for phosphorus extraction from sewage sludge and wastewater.
Innovation Solution
A mobile phosphorus recovery plant with a process unit that includes a redissolution tank, collection tank, filtration unit, and precipitation tank, allowing for chemical treatment of phosphorus-containing media without disrupting existing sewage treatment operations, using acidification and chemical dosing to precipitate phosphate-rich compounds like magnesium ammonium phosphate (MAP) for efficient recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a mobile phosphorus recovery plant is used, then adaptability to different treatment plants is improved, but device complexity increases
Solution Approach 1:
The phosphorus recovery plant is divided into separate functional modules (redissolution tank, collection tank, filtration unit, precipitation tank, separating device) that can be independently configured and transported. This modular segmentation enables the system to adapt to different treatment plants while managing complexity through standardized module design.
Solution Approach 2:
The mobile plant is designed with universal components that can perform multiple functions across different application scenarios. The standardized module design allows the same equipment to be deployed at various sewage treatment plants with different requirements, achieving versatility without proportionally increasing complexity.
2Productivity
If chemical treatment processes are implemented, then phosphorus recovery efficiency is improved, but operational disruption to existing sewage treatment operations occurs
Solution Approach 1:
The chemical treatment process is segmented into distinct sequential stages (redissolution, filtration, precipitation, separation) that operate independently. This allows the phosphorus recovery process to proceed efficiently without requiring shutdown of the main sewage treatment operations, as each module can be operated and maintained separately.
Solution Approach 2:
The mobile plant acts as an intermediary system that interfaces with the existing sewage treatment infrastructure. It receives phosphorus-containing streams from the main treatment process and returns treated effluent, enabling chemical recovery operations without direct disruption to core sewage treatment functions.
3Ease of manufacture
If existing infrastructure is utilized, then cost-effectiveness is improved, but manufacturing precision requirements increase
Solution Approach 1:
The system is segmented into standardized modules with defined connection interfaces. This allows existing infrastructure to be utilized while maintaining consistent manufacturing specifications for each module, reducing overall integration complexity and precision requirements compared to a fully custom-designed system.
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
Enables efficient phosphorus recovery from sewage sludge and wastewater without interrupting sewage treatment operations, utilizing existing infrastructure, and can be easily transported between treatment plants, providing a cost-effective and scalable solution for phosphorus recycling.
Implementation Method 1
redissolving phosphate in the phosphorus-containing medium supplied... coupled to a dosing device for acid
Implementation Method 2
precipitation tank... for precipitating a phosphate-rich product... coupled to a dosing device for adding chemicals
Implementation Method 3
separating device... for separating precipitated phosphate-rich solid from phosphate-poor medium
Data Source
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AI summary
The invention relates to a phosphorus recovery plant (400) for recovering phosphorus from a phosphorus-containing medium, in particular from sewage sludge and/or wastewater, characterized by at least one mobile process unit (100) for the chemical treatment of the phosphorus-containing medium, which is temporarily coupled to a stationary plant (200) that provides the phosphorus-containing medium, wherein the mobile process unit (100) comprises, in the process direction of the medium, a release vessel (130) for releasing phosphate from the supplied phosphorus-containing medium, a collection vessel (150) for collecting the partially purified medium, and a precipitation vessel (170) for precipitating a phosphate-rich product. The invention further relates to a method for operating a phosphorus recovery plant (400) for recovering phosphorus from a phosphorus-containing medium, in particular from sewage sludge and/or wastewater.