Liquid Aeration Apparatus for Septic Tank Effluent Quality
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Solution Overview
Problem
Existing septic tank treatment systems, especially in rural areas, face challenges in providing effective wastewater treatment due to increased population densities and water use, leading to environmental and health risks, as conventional aerobic conversion methods often agitate the liquid environment, increasing suspended solids and compromising effluent quality.
Innovation Solution
A liquid aeration apparatus with a vessel having an air diffuser and a liquid intake conduit, where wastewater is aerated and circulated through biofilm support media, allowing for controlled aeration and settling, reducing suspended solids and enhancing treatment efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional aerobic conversion methods are used to improve effluent quality, then treatment effectiveness is improved, but suspended solids increase and effluent quality is compromised
Solution Approach 1:
The aeration process is segmented into controlled zones with specific airflow rates and liquid circulation patterns, allowing selective aeration in different regions of the septic tank to treat suspended solids without excessive agitation
Solution Approach 2:
The system employs periodic aeration cycles with controlled duration and intensity, allowing biological treatment to occur during aeration phases while minimizing suspended solids generation through controlled rest periods
2Productivity
If population densities and water use in rural areas increase, then water treatment demand is met, but existing septic tank systems become insufficient
Solution Approach 1:
The system modifies operational parameters including airflow rates, liquid circulation velocities, and aeration durations to enhance treatment capacity while maintaining effluent quality standards under increased population densities
Solution Approach 2:
The aeration system is designed to perform multiple functions simultaneously including suspended solids removal, nutrient degradation, and pathogen reduction, allowing a single system to meet enhanced treatment demands without compromising reliability
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 effectively improves effluent quality by reducing suspended solids and organic constituents, adapting to various site conditions, and incorporating denitrification to minimize nitrate discharge into the subsurface environment, thus addressing the limitations of existing septic tank conversion technologies.
Implementation Method 1
A liquid aeration apparatus and method for treating wastewater or other liquids contained within open and/or closed liquid containment means
Implementation Method 2
aerobically supported wastewater treatment processes... wherein microorganisms are attached to the surfaces of solid inert material or media where they develop a biofilm
Implementation Method 3
A liquid intake conduit is positioned with an inlet end located at or near the upper end of the vessel and an outlet located near the bottom end of the vessel
Data Source
AI summary
A liquid aeration apparatus includes a vessel having sidewalls, a closed bottom end and, a liquid outlet being provided at or near the upper end. The sidewalls define a cross-sectional interior open area with a vertical depth. An air diffuser is positioned within the interior open area of the vessel. A liquid intake conduit is positioned with an inlet end located at or near the upper end of the vessel and an outlet located near the bottom end of the vessel.