Sewage Aeration Pump Delay Control for Variable Inflow Stability
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Solution Overview
Problem
Small sewage treatment devices face challenges with non-uniform water inflow and quality, affecting treatment processes and microorganism growth due to lack of regulating pools, leading to instability and energy inefficiency.
Innovation Solution
A control system utilizing a single chip microcomputer connected to a lift pump and gas pump, which generates delay start and stop signals based on water level height, regulating the operation of the gas pump to manage aeration and backflow, enhancing stability and energy conservation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If small sewage treatment devices are used without regulating pools, then construction cost and installation period are reduced, but the system becomes highly sensitive to non-uniform water inflow and quality variations
Solution Approach 1:
The patent implements dynamic control of the gas pump based on real-time monitoring of water level, flow rate, and treatment parameters. The control system continuously adjusts aeration intensity and backflow pump operation to match varying inflow conditions, transforming the static system into a dynamic one that adapts to non-uniform sewage flow without requiring regulating pools.
Solution Approach 2:
The patent employs feedback control mechanisms where sensors monitor water level, flow rate, and treatment parameters, and the control system uses this information to adjust gas pump operation. This closed-loop feedback ensures the system maintains stability and responds appropriately to variable inflow conditions, compensating for the absence of regulating pools.
2Reliability
If the gas pump operates continuously to maintain treatment effectiveness, then treatment quality is improved, but energy consumption increases significantly
Solution Approach 1:
The patent implements periodic or intermittent operation of the gas pump based on monitored treatment parameters and inflow conditions. Instead of continuous operation, the gas pump is activated only when treatment effectiveness requires it, creating a periodic action pattern that reduces energy consumption while maintaining adequate treatment quality through strategically timed aeration cycles.
Solution Approach 2:
The patent changes the operational parameters of the gas pump dynamically based on system conditions. The control system adjusts aeration intensity, duration, and frequency according to monitored parameters such as dissolved oxygen levels, flow rate, and water level, optimizing the balance between treatment effectiveness and energy consumption by adapting parameters to actual system needs.
3Speed
If the gas pump starts immediately when water level rises, then treatment response time is improved, but energy is wasted during transient unstable periods
Solution Approach 1:
The patent implements preliminary assessment action before initiating gas pump operation. When water level rises, the control system first evaluates multiple parameters including flow stability, treatment status, and system conditions. Only after this preliminary assessment confirms that immediate aeration is necessary does the gas pump start, preventing premature activation during transient unstable periods while maintaining rapid response when truly needed.
Solution Approach 2:
The patent applies preliminary anti-action by introducing a conditional delay or assessment period before gas pump activation. This preliminary counter-measure prevents the harmful effect of premature gas pump startup during unstable inflow transitions, allowing the system to filter out transient fluctuations before committing to energy-consuming treatment action.
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 system improves the stability of small sewage treatment devices by enhancing their resistance to variable water inflows and reducing energy consumption by optimizing the operation of the gas pump.
Implementation Method 1
the gas pump is controlled to perform the aeration and the backflow according to the delay start signal and the delay stop signal
Implementation Method 2
the gas pump is controlled to perform the aeration and the backflow according to the delay start signal and the delay stop signal
Data Source
Figure 1~2
Figure 3~4
AI summary
The present disclosure provides a control system and a method of a sewage treatment device, an electronic device and a computer readable storage medium, relating to the technical field of water treatment. The control system of a sewage treatment device includes a single chip microcomputer, and a lift pump and a gas pump which are connected respectively to the single chip microcomputer. The lift pump triggers a first switching signal according to a height of water level, wherein the first switching signal includes a starting signal and a shutdown signal. The single chip microcomputer regulates and controls according to the starting signal a delay time of starting to run the gas pump, and generates a delay start signal. Alternatively, the single chip microcomputer regulates and controls according to the shutdown signal a delay time of stopping running of the gas pump, and generates a delay stop signal. The gas pump is controlled to perform aeration and backflow according to the delay start signal and the delay stop signal. The present disclosure can overcome the problems of modelization and poor variable impact resistance of existing small sewage treatment devices, improve the stability of control system, and achieve an energy conservation effect.