Regulating Tank Nozzle Cooling for Wastewater Oxygenation
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Solution Overview
Problem
Wastewater treatment in paper recycling generates high temperatures, which negatively affects aerobic bacteria, and conventional methods to mitigate this using chemical solutions are insufficient.
Innovation Solution
A regulating tank with an annular wall, circular pipe, nozzles, and overflow weirs that create water circulation and oxygenation to lower water temperature and increase dissolved oxygen levels, utilizing pumps and guiding pipes to recirculate wastewater and control the flow through strategically placed stop plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical solutions are added to help bacteria work in high temperature wastewater, then bacterial activity is maintained, but the treatment effectiveness is limited and chemical costs increase
Solution Approach 1:
The invention changes the temperature parameter of the wastewater by introducing a cooling system with heat exchange pipes and circulating water flow. This actively lowers the wastewater temperature from high levels to a range suitable for bacterial activity, eliminating the need for chemical additives and significantly improving treatment effectiveness.
2Duration of action of moving object
If wastewater temperature increases during treatment, then treatment process continues, but aerobic bacteria cannot work effectively
Solution Approach 1:
The invention utilizes the phase transition and heat absorption properties of water by introducing cooling water that evaporates and absorbs heat from the wastewater through heat exchange pipes. This phase change process effectively maintains the wastewater temperature within the optimal range for aerobic bacteria throughout the treatment process.
3Temperature
If conventional cooling methods are used, then water temperature may be reduced, but dissolved oxygen levels are not increased to help aerobic bacteria
Solution Approach 1:
The invention merges the cooling function with oxygenation by designing a system where cooling water circulation and aeration occur simultaneously through the same heat exchange structure. The water flow through the pipes provides both cooling and oxygen transfer to the wastewater, achieving both temperature reduction and dissolved oxygen increase in one integrated system.
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 effectively reduces wastewater temperature and increases oxygen levels, enhancing the operational efficiency of aerobic bacteria in biochemical processes.
Implementation Method 1
a plurality of nozzles (40) connected to the circular pipe (20) to eject the wastewater in the circular pipe (20) back to the tank member (10)... effectively reduces wastewater temperature and increases oxygen levels
Implementation Method 2
the draining device includes a water pump and a guiding pipe; the water pump pumps the wastewater in the tank member, and the guiding pipe has opposite ends connected to the water pump and the circular pipe
Data Source
AI summary
A regulating tank includes a tank member having an annular wall to receive wastewater. A circular pipe is connected to the tank member. A draining device drains the wastewater in the tank member to the circular pipe. A plurality of nozzles connected to the circular pipe to eject the wastewater in the circular pipe back to the tank member. When the wastewater is ejected by the nozzles, a temperature of the wastewater is reduced, and dissolved oxygen of the wastewater is increased.