Superfine Adsorbent Dosing for Dissolved Organic Removal
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Solution Overview
Problem
Existing methods for removing dissolved organic substances in liquids, such as superfine powdered activated carbon, often require excessive dosages and prolonged residence times, leading to inefficiencies and potential overdosing, particularly in flow-through systems.
Innovation Solution
A method involving the measurement of dissolved organic substance concentrations at the liquid inlet and outlet, with the addition of a superfine adsorbent (0.1-5 μm particle diameter) in the form of a suspension, allowing for real-time regulation and efficient adsorption through cloth or pile filtration, optimizing the dosage based on measured concentrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If superfine powdered activated carbon is used for adsorption, then removal efficiency of dissolved organic substances is improved, but dosage requirement increases and residence time is prolonged
Solution Approach 1:
The patent implements a feedback control system where the dosage of superfine adsorbent is regulated based on measured concentrations of dissolved organic substances at the inlet and outlet. This closed-loop control optimizes the adsorbent dosage to achieve reliable removal efficiency while minimizing the quantity of adsorbent required, directly resolving the contradiction between removal efficiency and dosage requirement.
Solution Approach 2:
The patent changes the particle size parameter of the adsorbent to the superfine range (d50 ≤ 1-5 μm), which increases the specific surface area and adsorption capacity per unit mass. This parameter change allows achieving high removal efficiency with reduced adsorbent dosage compared to conventional adsorbent sizes.
2Reliability
If superfine powdered activated carbon is used for adsorption, then removal efficiency of dissolved organic substances is improved, but residence time is prolonged
Solution Approach 1:
The patent changes the particle size parameter to superfine (d50 ≤ 1-5 μm), which dramatically increases the specific surface area and mass transfer rate. This allows achieving high removal efficiency with significantly reduced residence time compared to conventional adsorbent sizes, directly resolving the contradiction between removal efficiency and residence time.
Solution Approach 2:
The patent implements dynamic regulation of the adsorbent dosage based on real-time measurement of organic substance concentrations. This dynamic adjustment optimizes the adsorption process to achieve reliable removal efficiency with minimized residence time by adding only the necessary amount of adsorbent.
3Quantity of substance
If real-time regulation of adsorbent addition is implemented, then adsorbent dosage is optimized, but measurement and control complexity increases
Solution Approach 1:
The patent implements a feedback control system using concentration measurements at inlet and outlet to regulate adsorbent dosage. While this optimizes adsorbent usage, it does introduce measurement and control complexity. The system uses standard concentration measurement techniques and proportional dosage adjustment to keep the complexity manageable while achieving significant dosage optimization.
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 enables rapid and controlled removal of dissolved organic substances, reducing the adsorbent requirement, minimizing resistance, and ensuring constant removal efficiency, with the ability to adjust superfine adsorbent addition in real-time based on outlet concentrations, preventing excess organic substances from escaping.
Implementation Method 1
superfine adsorbent with a particle diameter d50 of 0.1 to 5 μm... allowing the superfine adsorbent to adsorb the dissolved organic substances in the liquid
Data Source
AI summary
A method for removing dissolved organic substances in liquids with a superfine adsorbent includes the method steps of measuring the concentration of dissolved organic substances in the liquid, adding pulverized activated carbon in the submicron range according to the measured concentration of organic substances to the liquid to be treated and mixing the powdered activated carbon with the liquid to be treated, leaving the mixture for a sufficient residence time to allow the powdered activated carbon to adsorb the dissolved organic substances in the liquid, and removing the pulverized activated carbon from the liquid by filtration.