Microbial Cellular Biomass Production for Low-Impact Flocculation
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Solution Overview
Problem
Water treatment plants rely heavily on synthetic polymers like polyacrylamide, which are costly, environmentally harmful, and pose health risks, while biopolymers like bacterial exopolymers are underutilized due to high production costs and inefficiencies, necessitating a cost-effective, environmentally friendly alternative for flocculation processes.
Innovation Solution
A process for producing microbial cellular biomass with flocculant properties using a substrate rich in monosaccharides, controlled C/N and C/P ratios, and selective decantation to eliminate undesirable microorganisms, resulting in a biomass that can replace synthetic polymers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If synthetic polymers like polyacrylamide are used for flocculation, then flocculation efficiency is improved, but environmental harm and health risks increase
Solution Approach 1:
The patent changes the chemical composition parameters by replacing synthetic polyacrylamide with microbial cellular biomass having different biochemical properties. The biomass contains exopolysaccharides and proteins that provide flocculation functionality while eliminating the harmful effects of synthetic polymers, thus resolving the contradiction between efficiency and environmental safety
Solution Approach 2:
The patent uses microbial biomass that can be produced locally and is biodegradable, replacing persistent synthetic polymers. The biomass serves its flocculation function and then degrades naturally, eliminating long-term environmental accumulation and health risks associated with synthetic materials
2Object-affected harmful factors
If biopolymers like bacterial exopolymers are used to replace synthetic polymers, then environmental friendliness is improved, but production cost increases
Solution Approach 1:
The patent employs mixed microbial cultures that self-organize and self-produce the necessary exopolysaccharides and flocculant substances without requiring complex external intervention. The system uses inexpensive substrates and maintains itself through natural microbial interactions, significantly reducing production costs compared to controlled pure culture systems
Solution Approach 2:
The patent uses mixed microbial cultures that perform multiple functions simultaneously: substrate degradation, biomass production, and exopolysaccharide secretion. This multi-functionality eliminates the need for separate processing steps and reduces overall production costs while maintaining environmental friendliness
3Reliability
If pure microbial cultures are used for EPS production, then flocculant properties are improved, but production complexity and cost increase
Solution Approach 1:
Instead of using pure cultures and attempting to extract EPS, the patent inverts the approach by directly using the entire microbial cellular biomass including cells and extracellular substances. This inversion simplifies the production process while maintaining or improving flocculant properties, as the complete biomass provides both cellular and extracellular flocculation mechanisms
4Reliability
If conventional clarification processes using chemical coagulants are used, then treatment effectiveness is improved, but chemical consumption and environmental impact increase
Solution Approach 1:
The patent extracts and utilizes the natural flocculant capabilities inherent in microbial biomass, replacing the need for added chemical coagulants. The microbial cells and their extracellular substances provide the coagulation and flocculation functions that would otherwise require separate chemical additives, thereby reducing chemical consumption while maintaining treatment 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 produced microbial biomass achieves flocculation efficiency comparable to or exceeding that of synthetic polymers, reducing chemical usage and environmental impact, and can be used in various aqueous and oily solutions.
Implementation Method 1
Bacterial EPS, and in particular the fraction comprising exopolysaccharides, may present for some, excellent flocculating properties and may thus be a satisfactory alternative to synthetic polymers such as PAM
Implementation Method 2
elimination of any filamentous bacteria and filamentous fungi by sequential decantation of the obtained biomass
Data Source
AI summary
The disclosure relates to a microbial cellular biomass having flocculant properties, to its obtaining process and to its use in the treatment by flocculation.