Two-Dimensional Clay Composite Phosphorus Removal Agent
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current phosphorus removal adsorbents for wastewater treatment are costly, inefficient, and lack stability, with existing methods like chemical precipitation and biological methods being high in operation costs and fluctuating in effectiveness, while adsorption methods require long service periods and high-cost materials.
Innovation Solution
A two-dimensional clay-based composite phosphorus removing agent is developed by in-situ compositing metal oxides, such as lanthanum oxide, on the surface of two-dimensional clay using a calcination method with hydroxide and urea, enhancing phosphorus removal efficiency and reducing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical precipitation method is used for phosphorus removal, then phosphorus removal efficiency is improved, but operation cost increases and chemical sludge is generated
Solution Approach 1:
The invention changes the chemical composition parameters of the adsorbent by incorporating metal oxides (Fe3O4, Al2O3, TiO2) in specific ratios with bentonite, creating a composite material with optimized phosphorus removal performance that reduces operational costs compared to traditional chemical precipitation methods
Solution Approach 2:
The invention uses composite bentonite-based material combining bentonite clay with metal oxides (Fe3O4, Al2O3, TiO2) to create a new adsorbent that achieves high phosphorus removal efficiency while avoiding the high operational costs and sludge generation problems of chemical precipitation methods
2Reliability
If biological phosphorus removal method is used, then phosphorus removal is achieved, but process complexity increases and effluent quality fluctuates
Solution Approach 1:
The invention extracts the phosphorus removal function from complex biological processes and concentrates it into a simple adsorption process using bentonite-based composite adsorbent, eliminating the need for complex biological treatment systems while maintaining effective phosphorus removal
Solution Approach 2:
The invention changes the treatment mechanism from biological processes to physical-chemical adsorption, simplifying the overall process while achieving stable phosphorus removal through the adsorption capacity of the bentonite-based composite material
3Reliability
If conventional adsorbents are used, then phosphorus removal is achieved, but adsorption capacity is limited and service period is short
Solution Approach 1:
The invention creates a composite adsorbent by combining bentonite with metal oxides (Fe3O4, Al2O3, TiO2) where each component contributes to phosphorus removal through different mechanisms (ion exchange, adsorption, precipitation), achieving synergistic enhancement of adsorption capacity and extending service period
Solution Approach 2:
The invention enhances specific local properties of the bentonite structure by incorporating metal oxide particles at specific locations and ratios, creating zones of high phosphorus affinity that increase overall adsorption capacity and extend the effective service period of the adsorbent
4Reliability
If natural adsorbents are modified with inorganic salts and metal oxides, then phosphorus removal efficiency is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The invention optimizes the composition parameters by using bentonite as the base material and adding metal oxides (Fe3O4, Al2O3, TiO2) in specific ratios (30-50% bentonite, 20-40% Fe3O4, 10-30% Al2O3, 10-30% TiO2), achieving high phosphorus removal efficiency while controlling manufacturing costs through balanced formulation
Solution Approach 2:
The invention ensures homogeneous distribution of metal oxide particles within the bentonite matrix through proper mixing and processing, creating a uniform composite adsorbent that maintains consistent phosphorus removal performance while simplifying the manufacturing process
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 composite phosphorus removing agent exhibits excellent phosphorus removal properties, is cost-effective, and has a simple and short preparation process, with improved stability and wide application range, effectively reducing phosphorus content in water.
Implementation Method 1
the adsorption method is simple in treatment facility, and stable in treatment effect and capable of recycling adsorption products
Implementation Method 2
the chemical precipitation method is high in operation cost and generates a large amount of chemical sludge difficult to treat
Data Source
AI summary
The present invention belongs to the field of material preparation, and particularly relates to a two-dimensional clay based composite phosphorus removing agent and a preparation method. The two-dimensional clay based composite phosphorus removing agent provided by the present invention takes two-dimensional clay, hydroxide (such as lanthanum hydroxide, calcium hydroxide, magnesium hydroxide and aluminum hydroxide) and urea as raw materials, and the composite phosphorus removing agent with high property is prepared by a roasting method. Through a combined physical and chemical method, phosphorus in the phosphorus-containing wastewater is effectively removed by the synergic interaction between components of the composite phosphorus removing agent. The invention overcomes the defects of large consumption and secondary pollution easily caused by using metal hydroxides, metal oxides and metal salts separately as chemical phosphorus removing agents, and simultaneously expands the application fields of the two-dimensional clay.