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TEP-based coagulant regulation and control method and application thereof

A coagulant and data technology, applied in the direction of measuring devices, suspension and porous material analysis, scientific instruments, etc., can solve the problem of lack of exploration of the mechanism of action

Active Publication Date: 2021-07-30
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanism of action of coagulants on key characteristics such as the state, nature and membrane fouling potential of pollutants in the feed water is lack of exploration, resulting in feed water becoming a "black box" of the membrane system

Method used

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  • TEP-based coagulant regulation and control method and application thereof
  • TEP-based coagulant regulation and control method and application thereof
  • TEP-based coagulant regulation and control method and application thereof

Examples

Experimental program
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Effect test

Embodiment 3

[0060] In this example, a total of 4 L of liquid was fed, and the liquid fed contained water and sodium alginate, wherein the concentration of sodium alginate was 50 mg / L. After the solution was prepared, it was stirred with a magnetic stirrer for 2 hours to ensure that the solution was fully mixed. The cross-flow filtration device built in the first embodiment of the present invention was used to carry out membrane filtration tests, wherein the membrane module equipped with the membrane unit was a polyethersulfone ultrafiltration membrane with a molecular weight cut-off of 20kDa, the cross-flow filtration time was 120min, and the constant pressure was 2bars , the balance connected to the computer records the weight change every 15-60s, and calculates the membrane resistance according to Darcy's law.

Embodiment 4

[0062] This embodiment enters a total of 4L of liquid, which contains water, sodium alginate and aluminum ion coagulant, wherein the concentration of sodium alginate is 50mg / L, and the concentration of aluminum ion is 0.05mM. After the solution is prepared, use a magnetic stirrer to Stir for 2 h, ensuring that the solution is well mixed. Membrane filtration experiments were carried out using the cross-flow filtration device built in the first embodiment of the present invention. The equipped membrane module is a polyethersulfone ultrafiltration membrane with a molecular weight cut-off of 20kDa, the cross-flow filtration time is 120min, the constant pressure is 2bars, the balance connected to the computer records the weight change every 15-60s, and the membrane resistance is calculated according to Darcy's law .

Embodiment 5

[0064] This embodiment enters a total of 4L of liquid, which contains water, sodium alginate and aluminum ion coagulant, wherein the concentration of sodium alginate is 50mg / L, and the concentration of aluminum ion is 0.1mM. After the solution is prepared, use a magnetic stirrer to Stir for 2 h, ensuring that the solution is well mixed. Membrane filtration experiments were carried out using the cross-flow filtration device built in the first embodiment of the present invention. The equipped membrane module is a polyethersulfone ultrafiltration membrane with a molecular weight cut-off of 20kDa, the cross-flow filtration time is 120min, the constant pressure is 2bars, the balance connected to the computer records the weight change every 15-60s, and the membrane resistance is calculated according to Darcy's law .

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Abstract

The invention discloses a TEP-based coagulant regulation and control method and application thereof. The regulation and control method is obtained through a coagulant regulation and control model, and the regulation and control model is established based on dynamic regulation and control data obtained under a dynamic filtering condition and quantitative data obtained through a first fixed test, wherein the dynamic regulation and control data comprises the coagulant concentration obtained under the dynamic filtration condition and the value of the first quantitative characteristic of the TEP simulation pollutant corresponding to the coagulant concentration; and the quantitative data includes the coagulant concentration obtained in the first fixed test and a value of a second quantitative characteristic of the TEP simulated contaminant corresponding thereto. According to the method, an accurate, efficient and optimal regulation and control scheme can be obtained, the polymerization behavior of pollutants and deposition of the pollutants on the surface of the membrane can be controlled through the regulation and control scheme, and the purpose of preventing and controlling membrane pollution is achieved.

Description

technical field [0001] The invention relates to the technical field of coagulant regulation and control of membrane fouling. Background technique [0002] Membrane separation uses a natural or synthetic membrane with selective permeability as the separation medium. By applying one or more driving forces (such as pressure, concentration difference, potential difference, osmotic pressure, etc.) on both sides of the membrane, It is the process of making certain components in the raw material selectively and preferentially pass through the membrane, so as to achieve the purpose of mixture separation and product extraction, purification and concentration. Membrane separation technology is widely used in food, industry, advanced treatment of drinking water, seawater desalination and other fields due to its advantages of good separation effect, high processing efficiency and simple operation. The types of membranes used in the membrane separation process are very wide. According t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/08G01N2015/084Y02A20/131
Inventor 孟淑娟孟相昊李悦郁美枫
Owner BEIHANG UNIV
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