Sludge Compactor Auger Washing Fluid System
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Solution Overview
Problem
Existing sludge compactors often produce discharged solids that are not clean enough, particularly when processing biological materials, leading to excessive faecal content that is not acceptable for landfill disposal.
Innovation Solution
A sludge compactor design that incorporates a washing fluid system, where the washing fluid penetrates the solids and is discharged through the screen with the separated fluid, using an auger with agitators and strategically placed nozzles to effectively wash and separate solids, potentially using heated water with additives like detergents or biocides to improve cleanliness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a sludge compactor separates solids from waste water using a screen, then the solids are compacted for disposal, but the discharged solids contain excessive faecal content and are not clean enough for landfill
Solution Approach 1:
The washing fluid is applied to the solids in the screening zone before the solids reach the compaction zone, pre-cleaning the solids to remove faecal content and contaminants before they are compacted and discharged
Solution Approach 2:
A washing fluid (water or detergent solution) is introduced as an intermediary substance to wash the solids, carrying away faecal content and contaminants through the screen perforations, thereby cleaning the solids without requiring direct mechanical intervention
2Manufacturing precision
If washing fluid is introduced to clean the solids, then the cleanliness of discharged solids is improved, but the device complexity increases due to additional nozzles and fluid delivery systems
Solution Approach 1:
The washing fluid system serves multiple functions: it cleans the solids, washes the screen surface, and can be collected and reused for further washing, thereby reducing the need for separate systems for each function
Solution Approach 2:
The washing fluid system is designed to be self-regulating, where the fluid naturally flows through the screen and solids, and the used fluid is collected and can be reused, reducing the need for complex control mechanisms and external intervention
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 solution results in relatively clean discharged solids, as the washing fluid effectively removes contaminants and agitates the sludge, reducing the faecal content and improving the overall cleanliness of the solids for disposal.
Implementation Method 1
the washing fluid penetrates the solids and is subsequently discharged through the screen with the separated fluid from the mixture
Implementation Method 2
the washing fluid penetrates the solids and is subsequently discharged through the screen
Implementation Method 3
The pressure applied by the auger 34 to the cone 52 causes the cone 52 to be displaced away from the screen 4, 6
Implementation Method 4
The sludge is conveyed by the auger 34 from the inlet 8 towards the solids outlet 10. As the sludge is conveyed along the screen 4, 6 the fluid flows through the perforations in the screen 4, 6
Data Source
Figure 1
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AI summary
A separator (2), such as a sludge compactor, comprising a perforated tubular screen (4,6), an inlet (8) for mixture to be separated opening into the interior of the screen (4,6), a solids outlet (10) situated at one end of the screen (4,6), and an auger (34) disposed within the tubular screen (4,6) for conveying solids retained by the screen (4,6) from the inlet (8) to the solids outlet (10), wherein at least one delivery device is provided for delivering washing fluid into the interior of the tubular screen (4,6).