Photo-bioreactor Filter Integration Using Hydrostatic Pressure
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Solution Overview
Problem
Conventional algae harvesting systems require significant energy and resources to pump large quantities of water, leading to high operational and capital expenses, as well as environmental impact, due to the need for long-distance water transport between photo-bioreactors and separation units.
Innovation Solution
A system utilizing hydrostatic fluid pressure generated by an algae slurry within a photo-bioreactor to drive the slurry to a filter unit for separation, eliminating the need for pumps and reducing the distance water needs to be pumped, thereby reducing energy consumption and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If pumps are used to transport algae slurry from photo-bioreactor to separation unit, then water transport can be achieved, but energy consumption and operational costs increase significantly
Solution Approach 1:
The algae slurry itself generates the hydrostatic pressure needed for transport by maintaining a minimum liquid level in the photo-bioreactor. The system uses its own weight and pressure to drive flow to the separation unit, eliminating the need for external pumps and reducing energy consumption.
Solution Approach 2:
The invention utilizes hydrostatic pressure (a hydraulic principle) generated by the algae slurry column to drive fluid flow from the photo-bioreactor to the separation unit. This hydraulic approach replaces mechanical pumping with pressure-driven flow.
2Ease of manufacture
If long-distance water transport is implemented between photo-bioreactor and separation unit, then algae harvesting can be performed, but capital expenses and environmental impact increase
Solution Approach 1:
The invention combines the photo-bioreactor and separation unit into an integrated system where the slurry outlet of the reactor directly connects to the separation unit inlet. This merging eliminates intermediate transport infrastructure and reduces system complexity.
Solution Approach 2:
Hydrostatic pressure acts as an intermediary mechanism that enables slurry transport without requiring mechanical pumps or complex transport infrastructure. The pressure gradient serves as the mediating force for fluid movement between units.
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
This approach reduces operating expenses, environmental impact, and capital expenditures by leveraging hydrostatic pressure to facilitate on-site filtration and recycling of water, enhancing the efficiency and sustainability of algal biofuel production.
Implementation Method 1
an algae slurry, when at least partially contained within the photo-bioreactor, generates hydrostatic fluid pressure. The hydrostatic fluid pressure generated by the algae slurry may exclusively drive the algae slurry to the filter unit
Data Source
AI summary
A system for growing and harvesting algae biomass includes a photo-bioreactor suitable for algae growth in water and a filter unit in fluid communication with the photo-bioreactor. An algae slurry, when at least partially contained within the photo-bioreactor, generates hydrostatic fluid pressure that exclusively drives the algae slurry to the filter unit and discharges a permeate.