Smart Raft Phytoremediation With Sensors for Algal Bloom Mitigation

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Solution Overview

Problem

Existing systems lack effective and cost-efficient methods for mitigating harmful algal blooms and improving water quality due to eutrophication caused by nutrient pollution.

Innovation Solution

Deploying biodegradable smart rafts equipped with water quality sensors, remedial plants, and autonomous navigation systems to monitor and improve water quality by actively positioning themselves in areas of high nutrient concentration, using biocompatible materials and plant growth-promoting bacteria to enhance phytoremediation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional water quality mitigation systems are deployed, then water quality monitoring is provided, but the systems lack effectiveness in mitigating harmful algal blooms and are not cost-efficient

Engineering Contradiction:
Improveeffectiveness in mitigating harmful algal bloomsVSAvoidcost-efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system employs autonomous rafts that self-navigate to areas with harmful algal blooms using onboard sensors and navigation systems. The rafts independently deploy remediation treatments without requiring manual intervention, and automatically monitor water quality parameters to adjust their operations. This self-service capability eliminates labor costs while maintaining high effectiveness in mitigating algal blooms.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system changes the operational parameters of water treatment by using adjustable dosing rates of remediation substances based on real-time sensor data. The rafts can modify treatment intensity, target specific water quality parameters (such as nutrient concentrations or algal density), and adapt their navigation patterns based on environmental conditions, thereby optimizing both effectiveness and cost-efficiency dynamically.

Inventive Principle:
Principle #35Parameter changes

2Measurement precision

If static water quality monitoring systems are used, then continuous monitoring is provided, but the systems cannot dynamically respond to changing water quality conditions or actively mitigate algal blooms

Engineering Contradiction:
Improvereal-time water quality data accuracyVSAvoiddynamic response capability
Core Design Contradiction:
Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The system transitions from static monitoring to dynamic operation by equipping rafts with autonomous navigation capabilities that allow them to actively seek out and relocate to areas with harmful algal blooms. The rafts continuously adjust their position, treatment application, and monitoring focus based on real-time sensor feedback and changing environmental conditions, providing both precise measurement and adaptive response.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system implements closed-loop feedback control where onboard sensors continuously measure water quality parameters (such as nutrient levels, pH, temperature, and algal density), and this data feeds into control algorithms that automatically adjust treatment dosing rates, raft navigation, and monitoring priorities. This feedback mechanism enables the system to maintain measurement precision while dynamically adapting to changing conditions.

Inventive Principle:
Principle #23Feedback

3Ease of manufacture

If manual water quality management is implemented, then treatment applications are provided, but the processes are labor-intensive and lack real-time data-driven decision making

Engineering Contradiction:
Improveease of deploymentVSAvoidautomation level
Core Design Contradiction:
Ease of manufactureVSExtent of automation

Solution Approach 1:

The system replaces manual mechanical operations with automated electronic and computational systems. Rafts are equipped with autonomous navigation systems, automated treatment dosing mechanisms, and integrated sensor arrays that eliminate the need for manual sampling, treatment application, and data analysis. The automation level is high, with systems performing all critical functions independently while remaining easy to deploy through standardized modular designs.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 smart rafts provide real-time data for dynamic management strategies, improve water quality, and mitigate algal blooms effectively, while being cost-effective and environmentally friendly, supporting ecosystem restoration and data-driven policy development.

Implementation Method 1

The sensor can be configured to monitor a variety of water quality parameters, such as pH, dissolved oxygen, temperature, and nutrient levels

Methodology Applied
Scientific EffectpH measurement:

Implementation Method 2

The sensor can be configured to monitor a variety of water quality parameters, such as pH, dissolved oxygen, temperature, and nutrient levels

Methodology Applied
Scientific EffectDissolved oxygen measurement:

Implementation Method 3

remedial plants grown in the tube-shaped pods with roots of the remedial plants passing through the water channel into water underneath the raft

Methodology Applied
Scientific EffectPhytoremediation:

Implementation Method 4

using biocompatible materials and plant growth-promoting bacteria to enhance phytoremediation

Methodology Applied
Scientific EffectPlant growth-promoting bacteria:

Data Source

PatentUS12520784B2Smart raft system and method for monitoring and improving water quality to mitigate algal blooms
Publication Date: 2026.01.13 VILLAMAR CARLOS R
  • US12520784B2 patent drawing
  • US12520784B2 patent drawing
  • US12520784B2 patent drawing

AI summary

A system, method and computer program product for monitoring and improving water quality to mitigate eutrophication or harmful algal blooms using smart rafts, including a raft made from a mycomaterial; one or more tube-shaped pods formed in the raft and configured to hold seed or media and configured with a root channel at the bottom of the pods extending through a bottom of the raft; and a sensor holder formed in the raft and configured to hold a water quality sensor accessing a water channel extending through a bottom of the raft. Remedial plants are grown in the tube-shaped pods with roots of the remedial plants passing through the water channel into water underneath the raft.