Clarifier Inclined Deflector Prevents Flocculate Penetration
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Solution Overview
Problem
In wastewater treatment plants with aeration and clarification basins, flocculates of materials can penetrate into the siphoid zone and be evacuated through the outlet duct, leading to treated water that no longer complies with purification criteria due to agitation and upward flow of sludge blocks.
Innovation Solution
Incorporating ascending flow diverter elements with inclined deflectors in the clarification enclosure to prevent flocculates from entering the siphoid zone and a second deflector above the outlet duct to divert any that do enter away from the outlet, ensuring compliance with purification criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a siphoid zone is provided in the clarification enclosure to separate treated water, then water purification efficiency is improved, but flocculates of materials can penetrate into the siphoid zone and be evacuated through the outlet duct, compromising treatment quality
Solution Approach 1:
An inclined deflector is introduced as an intermediary element between the upward flow region and the siphoid zone inlet. This deflector intercepts flocculates and upward flows before they can enter the siphoid zone through the inlet passage, allowing the siphoid zone to maintain its purification function while preventing contamination by penetrating flocculates.
Solution Approach 2:
The inclined deflector performs a preliminary action by deflecting upward flows and intercepting flocculates before they reach the siphoid zone inlet passage. This preliminary intervention prevents the harmful action of flocculate penetration, ensuring that only properly settled water enters the siphoid zone for final separation.
2Loss of energy
If the clarification enclosure allows natural water flow to facilitate decantation, then energy consumption is reduced, but agitation and upward flow of sludge blocks can occur, causing flocculates to enter the siphoid zone
Solution Approach 1:
The inclined deflector serves as a passive intermediary structure that modifies the natural water flow pattern without requiring energy input. It redirects upward flows and intercepts sludge blocks at strategic locations, preventing harmful agitation effects while maintaining the energy-efficient natural decantation process.
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
Significantly reduces the risk of flocculates entering the siphoid zone and ensures that the treated water meets purification standards by deflecting upward flows and solids away from the inlet and outlet passages.
Implementation Method 1
having an inclined deflector extending from a lower end overlapping in height of the inlet passage to an upper end spaced from the inlet passage
Implementation Method 2
a siphoid zone, in which the waters are theoretically weakly loaded with suspended solids
Implementation Method 3
decantation, aimed at retaining the heaviest materials at the bottom of the tank and bringing the lighter ones to the surface
Implementation Method 4
aeration, according to which the 'sludge' in suspension undergoes a treatment of purification, this by creating in a sequential way aerobic periods and periods of anoxia, which will make it possible to generate a phenomenon of digestion of the organic matter
Implementation Method 5
reduction in nitrates and nitrites
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to a wastewater treatment plant of the type comprising a tank (1) including at least two chambers, one for aeration (10) and the other for clarification (11), the wastewater passing from one to the other, the clarification chamber (11) being connected to an outlet conduit (110) by a siphonic zone (20) delimited by a siphonic partition (2) the lower end (21) of which forms an inlet passage (210) in the siphonic zone, characterized in that the clarification chamber (11) includes at least one upward flow diverter element (3) placed below the inlet passage (210) in the siphonic zone (20), having an inclined deflector (30) extending from a lower end (300) overlapping the inlet passage (210) to an upper end (301) offset from the inlet passage.