Waste Liquid Tank With External Pump Tank
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Solution Overview
Problem
Existing wastewater treatment systems face challenges in efficiently transferring treated water to higher elevation processing sites without the need for a separate pump tank, which increases costs and complexity due to space and leakage issues when trying to integrate a pump tank within the depositing tank.
Innovation Solution
A waste liquid tank design with a pump tank positioned outside the outer wall of the waste liquid tank, allowing both to be serviced through a single riser pipe and sharing a compact installation hole, with the pump tank supporting the waste liquid tank and enhancing structural integrity, while minimizing leakage risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate pump tank is installed outside the depositing tank, then water can be pumped to higher elevation processing sites, but material and installation costs increase and additional manholes or riser pipes are required
Solution Approach 1:
The pump tank is integrated with the depositing tank by positioning it inside the depositing tank's installation hole, allowing both tanks to share the same riser pipe for servicing. This merging eliminates the need for separate riser pipes and reduces installation complexity while maintaining the water transfer function.
Solution Approach 2:
The pump tank is nested within the installation hole of the depositing tank, with the pump tank positioned inside the outer wall of the depositing tank. This nested configuration allows both tanks to be serviced through a single riser pipe and reduces the number of installation holes required.
2Device complexity
If the pump tank is placed inside the depositing tank, then the number of installation holes is reduced, but it becomes extremely difficult to fit a sufficiently large pump tank and increases installation depth
Solution Approach 1:
The pump tank is positioned outside the outer wall of the depositing tank rather than completely inside, allowing it to extend in a different spatial dimension. This configuration enables the pump tank to have sufficient volume while still sharing the installation hole with the depositing tank, avoiding the need for increased installation depth.
3Reliability
If the pump tank is positioned outside the waste liquid tank, then leakage risks are reduced and installation is simplified, but additional installation holes and riser pipes are required
Solution Approach 1:
The pump tank and depositing tank are configured to share the same riser pipe connection point, merging the servicing infrastructure. This allows the pump tank to be positioned outside the depositing tank for reduced leakage risk while maintaining a single riser pipe 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
This configuration reduces material and installation costs, simplifies the installation process, and ensures efficient water transfer without the need for additional infrastructure, while maintaining structural support and preventing leaks.
Implementation Method 1
the pump tank supports the waste liquid tank
Implementation Method 2
The outer wall of the waste liquid tank and the outer wall of the pump tank contact each other at least partly. Thus, only one riser pipe is needed for the waste liquid tank and pump tank. Further, only one installation hole for the waste liquid tank and the pump tank is needed because they are close to each other.
Data Source
Figure 1
Figure 2~4
Figure 5~6
AI summary
A waste liquid tank comprises at least one chamber (3, 3a, 3b, 3c) and a riser pipe (4). The riser pipe (4) is arranged such that the waste liquid tank (1) and a pump tank (2) in connection with the waste liquid tank (1) can be serviced through the same riser pipe (4). The pump tank (2) is positioned outside the outer wall (6, 6a) of the waste liquid tank (1). The outer wall (6, 6a) of the waste liquid tank (1) and the outer wall (7) of the pump tank (2) contact each other at least partly.