Dissolved Air Flotation Using Ambient Air
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Solution Overview
Problem
Conventional dissolved air flotation systems require compressed air, increasing capital and operating expenses, and equipment area, while also reducing water treatment efficiency due to the need for complex air compressors and large saturators.
Innovation Solution
A dissolved air flotation system that uses ambient air instead of compressed air to generate micro air bubbles, with a coagulation part for forming floc and a separation part that introduces micro air bubbles through nozzles, reducing equipment area and energy consumption, and utilizing a single coagulation basin with turbulent flow-forming derivatives to enhance floc formation and growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If compressed air is used to generate micro air bubbles in the flotation basin, then the flotation process can be achieved, but capital expenditure and operating expenses increase due to the need for air compressors and larger service areas
Solution Approach 1:
The patent extracts and eliminates the air compressor component from the system by using ambient air directly. The circulation pump draws ambient air into the pressurized circulating water, which then releases micro bubbles in the flotation basin without requiring any compressed air generation equipment.
Solution Approach 2:
The system uses itself to generate the required air bubbles. The circulation pump and pressurized circulating water serve dual functions: both circulating water for flotation and generating micro bubbles through ambient air entrainment. The system's own operational components create the necessary aeration without external air compression equipment.
2Quantity of substance
If compressed air is used to generate micro air bubbles, then air supply is ensured, but equipment area increases due to the need for air compressors and large saturators
Solution Approach 1:
The patent removes the air compressor and large saturator equipment from the system. Ambient air is drawn directly into the circulating water stream, eliminating the need for dedicated air storage and compression equipment that would occupy significant space.
Solution Approach 2:
The circulation pump and circulating water system perform multiple functions simultaneously: water circulation for flotation, air entrainment, and micro bubble generation. This multi-functionality eliminates the need for separate air compression and storage equipment, reducing overall equipment footprint.
3Reliability
If conventional coagulation basins with mechanical agitators are used, then coagulation induction and floc growth are achieved, but energy consumption increases and equipment complexity rises
Solution Approach 1:
The patent replaces the mechanical agitator system with a turbulence-based coagulation process. The circulation pump creates turbulent flow in the coagulation basin that induces coagulation and floc growth without mechanical moving parts, eliminating the energy consumption associated with mechanical agitation.
Solution Approach 2:
The circulating water itself provides the mixing and coagulation function through its turbulent flow. The system uses its own operational water flow to achieve coagulation induction and floc growth, eliminating the need for separate mechanical energy input for agitation.
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 reduces capital and operating expenses by eliminating the need for compressed air and large saturators, increases water treatment efficiency by ensuring sufficient floc formation and growth, and minimizes energy consumption through a smaller equipment area and efficient air bubble generation.
Implementation Method 1
a circulation pump which pressurizes the circulating water supplied to the separation part, and external air is drawn in front of the pump
Implementation Method 2
a circulation pump which pressurizes the circulating water supplied to the separation part
Implementation Method 3
the discharged micro air bubbles are attached to the floc in the raw water, and the bubble-floc binding materials are reduced in specific gravity and float on the surface of water by means of a buoyant force
Implementation Method 4
a coagulation part for mixing raw water and a coagulant to each other to perform formation and growth of floc
Data Source
AI summary
The present disclosure relates to a dissolved air flotation system using ambient air, and more particularly, to a dissolved air flotation system that is capable of allowing ambient air to be introduced in front of a pump to generate micro air bubbles with the water discharged from the pump, so that the ambient air may be used instead of compressed air.