Modular Lake Water Treatment Using Algae and Flocculation
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Solution Overview
Problem
Artificial and natural lakes degraded by pollution and lack of appropriate circulation or treatment become unsuitable for human use due to eutrophication and high maintenance costs, with existing technologies being too costly and impractical for urban settings.
Innovation Solution
A modular and portable water treatment system that uses micro-flocculation, coagulation, and air injection to de-pollute lake water, allowing for division of lakes into modules for specific uses like bathing and fishing, and includes sodium hypochlorite disinfection, with sludge treatment for fertilizer reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If aerators are installed to promote water oxygenation, then water oxygenation is improved, but operation cost increases due to electric power consumption
Solution Approach 1:
The system uses algae as living organisms that perform photosynthesis to produce oxygen and consume carbon dioxide, eliminating the need for external energy input. The algae naturally oxygenate the water through their metabolic processes, converting solar energy into chemical energy that improves water quality without requiring electric power consumption.
Solution Approach 2:
The patent replaces mechanical aerators with a biological system using algae. Instead of using mechanical devices that consume electricity to inject air into water, the system employs photosynthetic organisms that naturally produce oxygen through photosynthesis, substituting a mechanical energy-consuming system with a biological energy-free process.
2Reliability
If conventional water treatment technologies are used for disinfection and treatment, then water quality is improved, but implementation cost becomes too high and impracticable for urban lakes
Solution Approach 1:
The system uses inexpensive algae that can be easily cultivated and replaced. Rather than investing in expensive conventional treatment infrastructure, the patent employs low-cost biological agents (algae) that can be introduced into the lake, perform their function, and then be managed as needed. This approach dramatically reduces implementation and operation costs compared to traditional treatment technologies.
Solution Approach 2:
The algae perform self-treatment of the water through their natural photosynthetic and metabolic processes. They automatically consume nutrients, produce oxygen, and improve water quality without requiring external energy input or complex treatment facilities, making the system both cheap and scalable for urban lakes.
3Ease of manufacture
If lakes are left untreated with stagnant water, then implementation cost is low, but water degradation occurs leading to eutrophication and loss of usability
Solution Approach 1:
The algae naturally circulate and treat the water through their metabolic activities. They consume excess nutrients that would otherwise cause eutrophication, produce oxygen through photosynthesis, and improve water quality. This self-service biological treatment maintains water usability without requiring expensive mechanical circulation systems or chemical treatments.
Solution Approach 2:
The system converts the harmful effect of stagnant water and excess nutrients (which cause eutrophication) into a beneficial process. The algae thrive on the excess nutrients, transforming the pollution problem into a productive biological system that oxygenates and cleans the water, turning the harmful stagnation into a beneficial self-cleaning mechanism.
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 effectively removes pollutants, revitalizes lake water, reduces maintenance and operation costs, and eliminates the need for aerators, enabling safe use for bathing, sports, and fishing while reducing waste volume and odor, with over 95% pollutant removal efficiency.
Implementation Method 1
micro application of flocculating/coagulating material in the water course, followed by micro flocculation to aggregate suspended particles downstream, defining flakes of bigger size
Implementation Method 2
the aggregate particles are submitted to dissolution and air injection, causing micro floating of aggregate particles
Implementation Method 3
periodic treatment and dosage of sodium hypochlorite or another oxidizing agent, in order to assure suitability to bathe
Data Source
AI summary
A system for implementation or de-pollution and revitalization of artificial or natural lakes, inserted in land block and street structures around them, aiming at modulation in the artificial or natural lakes, insertion of dividing walls made of vinyl curtain, land dykes, concrete walls, or any other way, dividing the artificial or natural lake in isolated places, so there is no contact between the water of each module, considering that each module can be used for different activities, such as bathing, water sports, fishing, etc., considering that the water of the artificial or natural lake is de-polluted through the portable or the stationary treatment unit and preferably, conditioned into containers.