Cavitation Pump Unit for High-Viscosity Wastewater Treatment
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Solution Overview
Problem
Conventional biological treatment processes for wastewater, especially those with high viscosity like livestock manure, face inefficiencies due to high power consumption, large equipment requirements, and poor purification efficiency, leading to economic burdens and civil complaints.
Innovation Solution
A cavitation pump unit with a motor, shaft, and impellers featuring cutter parts and cavitation grooves that pulverize, oxidize, and reduce wastewater, converting it into odorless, non-viscous fine particles, thereby improving dehydration rates and methane gas yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional biological treatment process is used to treat high viscosity wastewater, then purification can be achieved, but power consumption is high and equipment size is large
Solution Approach 1:
The patent replaces the conventional mechanical blower and oxidizer system with a cavitation pump unit that utilizes cavitation phenomena to achieve purification. The cavitation pump creates vacuum effects and fluid turbulence to enhance biological degradation of organic matter, eliminating the need for separate mechanical aeration equipment and significantly reducing power consumption while maintaining high purification efficiency
Solution Approach 2:
The patent changes the operational parameters of the treatment system by introducing cavitation effects with specific vacuum degrees (50-80% of atmospheric pressure) and flow rates (1-10 m³/min). This parameter transformation enables efficient treatment of high viscosity wastewater without requiring large equipment or excessive power input, directly resolving the contradiction between purification efficiency and energy consumption
2Productivity
If conventional biological treatment process is used, then treatment can be performed, but equipment size is large requiring predetermined space
Solution Approach 1:
The patent merges multiple functions into a single cavitation pump unit: pumping, vacuum creation, fluid mixing, and biological treatment acceleration. This integration eliminates the need for separate blowers, oxidizers, and mixing equipment, dramatically reducing the overall equipment footprint while maintaining full treatment capacity for high viscosity wastewater
Solution Approach 2:
The cavitation pump unit acts as an intermediary device that facilitates the biological treatment process through cavitation effects. By creating vacuum bubbles and fluid turbulence, it enhances the activity of microorganisms without requiring large reaction chambers or extensive equipment infrastructure, thus achieving compact design with high treatment capacity
3Productivity
If conventional biological treatment process is used for high viscosity wastewater, then treatment can be achieved, but purification efficiency is poor
Solution Approach 1:
The cavitation pump unit generates intense mechanical vibration and fluid turbulence through cavitation bubble collapse. This mechanical action breaks up aggregates in high viscosity wastewater, enhances contact between microorganisms and organic matter, and significantly improves purification efficiency without adding complex treatment stages or multiple processing units
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 cavitation pump unit enhances wastewater purification efficiency, reduces economic burdens, and increases methane gas production by converting high-viscosity sludge into homogeneous fine particles, improving solid/liquid separation and reducing residence time in treatment plants.
Implementation Method 1
purify sludge having high viscosity, which is generated in plants for treating wastewater or sewage having high viscosity because of containing a large amount of sludge such as livestock manure, through pulverization, oxidization, and reduction effects using a cavitation phenomenon
Data Source
AI summary
Provided is a cavitation pump unit. The cavitation pump unit includes a motor, a shaft axially mounted on a motor shaft, a plurality of impellers disposed at a predetermined distance along a circumferential surface of the shaft, and a housing surrounding the shaft and the plurality of impellers. The plurality of impellers includes cutter parts each of which protrudes to be inclined toward an inner surface of the housing in one direction, and cavitation grooves recessed inward in directions facing each other are defined in both side surfaces of each of the cutter parts.