Upper-Layer Cleaning Device for Water Treatment Filter
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Solution Overview
Problem
Conventional water treatment apparatuses face inefficiencies in removing iron and manganese from groundwater, leading to excessive water consumption, high maintenance costs, and limited installation in compact spaces due to the use of chemicals and complex systems, with filtering speeds ranging from 60 to 120 m/day and significant noise production during cleaning.
Innovation Solution
A compact upper layer cleaning apparatus with surface-cleaning special air mixing nozzles and a two-layer filter system, utilizing reverse cleaning water to efficiently remove iron from the upper layer and manganese from the lower layer without chemicals, achieving a filtering speed of 400 to 500 m/day and reducing noise through a circular tank design and noise-reducing air suction pipe configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical agents (oxidizing agents and flocculants) are added to remove iron and manganese, then removal effectiveness is improved, but operating cost and maintenance cost increase
Solution Approach 1:
The filter layer performs self-cleaning by utilizing the flow dynamics of water itself. The unique structure creates natural backwash effects that remove accumulated iron and manganese without requiring external chemical agents, making the system self-maintaining and reducing operating costs while preserving removal effectiveness
Solution Approach 2:
The invention replaces the chemical treatment system (oxidizing agents and flocculants) with a mechanical-physical system based on controlled water flow and filter layer structure. The water flow dynamics and filter media arrangement create mechanical cleaning action that substitutes for chemical processes, eliminating the need for costly chemical purchases and handling
2Reliability
If chemical agents are used for treatment, then iron and manganese removal is achieved, but system complexity and installation space requirements increase
Solution Approach 1:
The invention extracts and eliminates the chemical treatment components (oxidizing agent injection systems, flocculant dosing systems, multiple treatment tanks) from the water treatment process. Only the essential filtration function remains, implemented through a simplified filter layer structure that achieves the same removal effectiveness without the complex chemical handling infrastructure
Solution Approach 2:
The filter layer serves multiple functions simultaneously: it acts as the primary filtration medium for removing iron and manganese, while also functioning as a self-cleaning mechanism through its unique structure. This multi-functionality eliminates the need for separate chemical dosing systems, mixing tanks, and sludge handling equipment, reducing overall system complexity
3Ease of operation
If conventional cleaning methods are used, then filter layer cleaning is performed, but water consumption and noise production increase
Solution Approach 1:
The filter layer cleans itself by utilizing the natural flow dynamics of water passing through it. The unique structure creates internal backwash currents that lift and remove accumulated particles from the filter media surface, eliminating the need for external high-volume water consumption for backwashing while maintaining effective cleaning function
Solution Approach 2:
The invention changes the flow velocity and direction parameters within the filter layer to create optimal cleaning conditions. By controlling the water flow characteristics and filter media arrangement, the system generates sufficient shear force and turbulence for effective particle removal without requiring excessive water volumes, reducing water consumption while maintaining cleaning effectiveness
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 apparatus significantly enhances filtering speed and efficiency while minimizing water usage and noise, achieving a 20% deeper cleaning depth and reducing cleaning water requirements to 3 to 5% of filtered water, with improved maintenance and reduced power consumption.
Implementation Method 1
air is introduced into the jet nozzles through air inlets or air introducing pipes open to the insides of the jet nozzles. Then, jet streams including a large number of air bubbles from raw water ejection outlets of the nozzles are hit against the surface of water above a filter layer
Implementation Method 2
causes soluble components such as iron and manganese in the water to be oxidized and turned into insoluble components
Implementation Method 3
which are then caught on the surface of filter medium particles such as filter sand forming the filter layer
Data Source
AI summary
Water treatment apparatus includes raw water special air mixing nozzles (7); filtering tank (5) housing filter layer (4) including two layers of upper layer (2) and lower layer (3), the upper layer including a filter medium with a smaller specific gravity and a larger particle size than a filter medium of the lower layer; a water collection pipe (13) removing filtered water and supplying reverse cleaning water to the filter layer during reverse cleaning; drainage trough (12); and upper layer cleaning apparatus (10), in which the upper layer cleaning apparatus includes upper layer cleaning pipe support member (17), upper layer cleaning water pipe (18), surface-cleaning special air mixing nozzles (19), air suction pipe (20), and horizontal air pipes (31 and 32) and the raw water special air mixing nozzles (7) are attached to raw water inflow tank (70) provided on a part of the drainage trough (12).