Sewage System With Overflow Weirs And Orifices
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Solution Overview
Problem
Existing sewage systems face challenges in efficiently regulating discharge volumes, leading to increased capacity requirements for regulating reservoirs, particularly due to the limitations of orifices and on-off valves at outlets.
Innovation Solution
The implementation of a sewage system with first and second water branching devices, which include overflow weirs and partitions with orifices, allowing for precise separation and redirection of sewage flows into treatment plants and reservoirs, thereby reducing the need for large regulating reservoir capacities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single orifice or on-off valve is used at the outlet of a regulating reservoir, then the structure is simple, but the discharge volume regulation efficiency is poor, leading to increased reservoir capacity requirements
Solution Approach 1:
The outlet structure is segmented into multiple parallel channels, each equipped with its own orifice and overflow weir. This segmentation allows independent regulation of flow through each channel, significantly improving discharge volume control efficiency while maintaining reasonable structural complexity
Solution Approach 2:
The invention adds a vertical dimension to flow regulation by incorporating overflow weirs at different elevations. This enables multi-level discharge control where water can overflow at different heights depending on the water level in the reservoir, providing more nuanced discharge volume regulation
2Device complexity
If a single orifice or on-off valve is used at the outlet of a regulating reservoir, then the structure is simple, but the capacity requirement of the regulating reservoir increases
Solution Approach 1:
By segmenting the outlet into multiple parallel channels with individual orifices, the system achieves better discharge control efficiency. This allows the reservoir to maintain a smaller capacity while still meeting the required discharge regulation performance
Solution Approach 2:
The invention changes the discharge parameters by using multiple orifices with different sizes and overflow weirs at different elevations. This enables flexible adjustment of discharge characteristics, allowing optimization of reservoir capacity to meet specific regulation requirements
3Productivity
If multiple parallel channels with overflow weirs and partitions are introduced, then discharge volume regulation efficiency improves, but the device complexity increases
Solution Approach 1:
The invention merges multiple functions into a single integrated water branching device structure. The partitions, overflow weirs, and orifices are combined into one unified component that simultaneously performs flow division, level control, and discharge regulation, reducing overall structural complexity despite the multiple channels
4Volume of stationary object
If multiple parallel channels with overflow weirs and partitions are introduced, then the capacity requirement of the regulating reservoir is reduced, but the device complexity increases
Solution Approach 1:
Multiple functions are merged into the water branching device to achieve better discharge control with smaller reservoir capacity, while the integrated design minimizes the increase in structural complexity
Solution Approach 2:
The incorporation of vertical overflow weirs at different elevations adds a height dimension to the flow control mechanism. This enables more efficient use of reservoir volume by utilizing vertical water level variations to regulate discharge, thereby reducing the required horizontal reservoir capacity
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 enables accurate control of sewage volumes, reducing the capacity requirements of regulating reservoirs and preventing flooding by efficiently managing discharge volumes during heavy rainfall.
Implementation Method 1
a plurality of overflow weirs erected on at least one of both sides of the channel
Implementation Method 2
a plurality of partitions each provided between each of the plurality of overflow weirs and between one of the overflow weirs and the second discharge pipe, the plurality of partitions each including an orifice formed therein
Data Source
AI summary
Sewage flowing into a second water branching device is accurately controlled to separate into the following: sewage with a maximum sewage volume that can be discharged into a public water body W, the sewage sequentially passing through a first regulating tank, a first orifice, a second regulating tank, a second orifice, a third regulating tank and a third orifice to flow into a second discharge pipe; and sewage with an excess sewage volume, the sewage overflowing first to third overflow weirs to flow into an inflow pipe for a regulating reservoir.