Sewage Uniform Distribution Device for Aerobic Granular Sludge
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Solution Overview
Problem
Traditional sewage treatment methods in China face high costs, high energy consumption, and poor contact between organic matters and sludge, limiting their effectiveness in anaerobic phosphorus release and denitrification.
Innovation Solution
A sewage uniform distribution treatment device for an aerobic granular sludge system, featuring a reactor tank with a water inlet device and outlet device, where the inlet is higher than the outlet, utilizing a partially-filled flow design with triangular weirs and vertically arranged pipes for optimal sewage distribution and contact between organic matters and sludge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the forward and backward pushing flow method is used for water distribution, then the sewage can be distributed in the biological pool, but the organic load of fresh sewage is reduced and contact between organic matters and sludge is poor
Solution Approach 1:
The water inlet device is segmented into multiple vertical bell mouths uniformly distributed at the bottom of the reactor, with each bell mouth independently distributing sewage to different regions. This segmentation ensures that organic matters are evenly distributed and have sufficient contact with sludge throughout the reactor, resolving the poor contact issue while maintaining treatment efficiency.
Solution Approach 2:
The patent transitions from horizontal water distribution to vertical water distribution by positioning the water inlet device at the bottom of the reactor with vertical bell mouths. This dimensional change allows sewage to be distributed upward through the sludge layer, significantly improving contact between organic matters and sludge while maintaining high treatment efficiency.
2Productivity
If traditional water distribution methods are used, then water can be distributed in the biological pool, but energy consumption is high and operating cost is high
Solution Approach 1:
The water inlet device is positioned at the bottom of the reactor with the water outlet device at a higher elevation, creating a gravity-driven flow system. This equipotential design eliminates the need for additional pumping energy, as sewage flows naturally from the inlet to the outlet, significantly reducing energy consumption while maintaining treatment capacity.
Solution Approach 2:
The system uses the natural gravity flow of sewage from the elevated inlet to the lower outlet to drive the treatment process. The vertical bell mouths and inclined baffle plates work together to distribute and guide sewage without requiring external energy input, making the system self-sufficient and low-energy consuming.
3Use of energy by moving object
If the water inlet device is positioned at a higher elevation than the water outlet device, then gravity flow can be achieved for low energy consumption, but the structural design must ensure proper water distribution
Solution Approach 1:
The water inlet device features vertical bell mouths with specific opening angles (60°-120°, preferably 90°) uniformly distributed at the bottom, while the water outlet device has inclined baffle plates at specific angles (30°-60°, preferably 45°). These localized structural optimizations ensure proper water distribution and flow guidance without requiring complex overall design, achieving low energy consumption with manageable structural complexity.
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 achieves low energy consumption, reduced maintenance costs, and enhanced automation, ensuring ideal contact between organic matters and sludge, thereby improving denitrification and anaerobic phosphorus release processes.
Implementation Method 1
the elevation of the water inlet device is higher than the elevation of the water outlet device... the water inlet device comprises a water inlet inner channel, a water inlet weir, a water inlet outer channel, a vertical water inlet branch pipe and vertical bell mouths
Implementation Method 2
the water inlet weir is a right triangular weir... the water outlet weir is a right triangular weir
Data Source
AI summary
A sewage uniform distribution treatment device for an aerobic granular sludge system and a use method therefor, the device comprising a reactor tank body (1), a water inlet device (2), and a water outlet device (3). The water inlet device (2) comprises a water inlet inner channel (4), a water inlet weir (5), a water inlet outer channel (6), a vertical water inlet branch pipe (7), and vertical bell mouths (8); the water outlet device (3) comprises a water outlet main pipe (9), a water outlet channel (10), a water outlet weir (11), an outer baffle plate (12), and an inner baffle plate (13); the water outlet channel is connected to the water outlet main pipe; the outer baffle plate is a vertical baffle plate; the inner baffle plate is located at the bottom of the water outlet channel and is connected to the water outlet channel.