Equalization Tank Flow Control for Variable Sewage Quality
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Solution Overview
Problem
Existing sewage treatment plants face challenges in managing sudden inflows of highly-polluted sewage, leading to damage of purification apparatuses, increased manpower and dosage costs, and low facility utilization rates due to uneven sewage discharge patterns.
Innovation Solution
An automatic sewage regulation system with sensing modules and control modules that adjust water flow regulators to maintain sewage quality within a preset range, stabilizing the sewage quality in an equalization tank and optimizing the operation of the sewage treatment apparatus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the purification apparatus treats sewage without regulation, then it can handle all incoming sewage, but the sudden inflow of highly-polluted sewage damages the purification apparatus and increases treatment costs
Solution Approach 1:
The equalization tank receives and pre-mixes sewage from multiple sources before it enters the purification apparatus. This preliminary mixing action stabilizes the sewage characteristics, preventing sudden highly-polluted sewage from directly damaging the purification apparatus while extending its operational life
Solution Approach 2:
The equalization tank acts as an intermediary between the sewage sources and the purification apparatus. It buffers and homogenizes the sewage flow, eliminating the harmful variability of pollution levels before the sewage reaches the purification apparatus
2Productivity
If the purification apparatus operates continuously at full capacity, then it can treat all sewage, but facility utilization rate drops when sewage inflow is low
Solution Approach 1:
The system dynamically adjusts the operation of the purification apparatus based on the actual sewage inflow characteristics. By using the equalization tank to buffer sewage, the apparatus can operate at optimal capacity rather than running at full capacity continuously, improving facility utilization while maintaining treatment productivity
Solution Approach 2:
The equalization tank ensures continuous and stable sewage flow to the purification apparatus, smoothing out fluctuations in sewage inflow. This allows the purification apparatus to maintain steady operation without frequent start-stop cycles, improving both productivity and energy efficiency
3Adaptability or versatility
If manual regulation is used to adjust sewage flow, then treatment can be adapted to conditions, but manpower costs and operational complexity increase
Solution Approach 1:
The equalization tank automatically performs the regulation function through its mixing and buffering capabilities. The tank's design allows it to self-regulate sewage flow characteristics without requiring manual intervention, reducing operational complexity while maintaining adaptability to varying sewage conditions
Data Source
AI summary
An automatic sewage regulation system and a regulating method are provided. The automatic sewage regulation system is disposed between preset sewage sources and a preset sewage treatment apparatus and includes an equalization tank and an automatic sewage regulating device. The automatic sewage regulating device includes sensing modules for sensing and transmitting water quality sensing values of sewage in the preset sewage sources to a control module which outputs regulating signals to water flow regulators, so that the water flow regulators can regulate flowing volumes of the sewage of the preset sewage sources according to the regulating signal, to keep a water quality sensing value of the sewage in the equalization tank within a preset range, thereby preventing the equalization tank from converging sewage having excessively-high or excessively-low water quality sensing value. As a result, burden of a preset sewage treatment apparatus can be reduced.