Manhole with Separate Storm Water and Sewage Chambers
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Solution Overview
Problem
Conventional sewer networks often mix sewage and storm water, leading to increased treatment plant capacity requirements and environmental contamination, with separate networks being costly and difficult to install, especially in narrow streets.
Innovation Solution
A manhole design with separate chambers for sewage and storm water, allowing for their segregation and efficient management, along with a sewer network configuration where pipes are superposed to reduce installation costs and footprint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If separate sewer networks are installed to transport sewage water and storm water separately, then contamination of watercourses is avoided and treatment plant capacity requirements are reduced, but installation costs and installation requirements increase
Solution Approach 1:
The patent combines separate sewer networks into a single shared trench, merging the installation process for both storm water and sewage water pipes. This reduces installation requirements and costs while maintaining separate transport of the two water types, thus avoiding watercourse contamination without increasing device complexity.
Solution Approach 2:
The patent nests the sewage water pipe within the same trench as the storm water pipe, with the sewage pipe positioned below the storm water pipe. This nested arrangement in a shared excavation reduces the overall installation footprint and requirements while maintaining functional separation of the two sewer systems.
2Quantity of substance
If separate sewer networks are installed to transport sewage water and storm water separately, then capacity requirements of treatment plants are reduced, but installation costs increase
Solution Approach 1:
The patent merges the installation of separate sewer networks into a single shared trench, reducing the total quantity of excavation and backfilling materials required. This lowers installation costs while maintaining the functional separation that reduces treatment plant capacity requirements.
3Object-affected harmful factors
If separate sewer networks are installed in narrow streets, then sewage water and storm water are transported separately, but installation becomes challenging due to space constraints
Solution Approach 1:
The patent transitions from horizontal side-by-side pipe arrangement to vertical stacking within a shared trench. The storm water pipe is positioned above the sewage water pipe, utilizing the vertical dimension to accommodate both pipes in narrow street spaces while maintaining functional separation.
Solution Approach 2:
The patent nests the sewage water pipe below the storm water pipe within the same trench, creating a compact vertical arrangement that fits narrow street spaces while maintaining separate transport of sewage and storm water.
Data Source
AI summary
A manhole (100) for subterranean installation is described. The manhole (100) comprises a first chamber (110) arranged to receive storm water and a second chamber (120) arranged to receive sewage water. The first chamber (110) comprises a first inlet (111) and a first outlet (112). The second chamber (120) comprises a second inlet (121) and a second outlet (122). The first chamber (110) comprises a first access port (113) opposed to a first base (114) and a first wall (115) arranged therebetween. The second chamber (120) comprises a second access port (123) opposed to a second base (124) and a second wall (125) arranged therebetween. A first normal N1 to the first base (114) extends through the first base (114) and the second base (124). A sewer network 1000 and a method of installing the sewer network are also described.