Forward osmosis membrane water treatment teaching experiment device and method

Abstract

A forward osmosis membrane water treatment teaching experiment device comprises a raw material liquid measuring cup, a drawn liquid measuring cup, a first peristaltic pump, a second peristaltic pump and a membrane assembly, the membrane assembly is composed of a forward osmosis membrane and a clamp of the forward osmosis membrane, and the raw material liquid measuring cup, the first peristaltic pump and a membrane chamber cavity on one side of the membrane assembly form a loop, the drawn liquid measuring cup, the second peristaltic pump and a membrane chamber cavity on the other side of the membrane assembly form a loop, the first peristaltic pump is connected with a first conductivity meter and a photometer, the second peristaltic pump is connected with a second conductivity meter and a pressure meter, an electronic balance is arranged below the raw material liquid measuring cup in an auxiliary mode, and all measuring devices are connected with a computer. A self-circulation draw solution treatment mode is adopted, and the working principle of the forward osmosis membrane is learned and mastered through real-time data acquisition of multiple factors such as salinity, luminosity, water pressure, water temperature and flow on the two sides of the FO membrane by virtue of permeation volume and mass changes. The ergonomically designed device equipment structure meets the requirements of teaching experiments on full-parameter opening, visual operation, obvious explanation of effects, safety, low consumption and efficient space utilization.

Description

technical field [0001] The invention belongs to the technical field of teaching devices for environmental protection, chemistry and chemical engineering, and in particular relates to a teaching experiment device and method for forward osmosis membrane water treatment. Background technique [0002] Forward osmosis is a natural phenomenon in which water molecules flow from a place with a high chemical potential to a place with a low chemical potential through a semipermeable membrane using the osmotic pressure of a salt solution. The water molecules in the low-concentration raw material liquid are obtained by using the high-concentration drawing liquid to realize the concentration and reduction disposal and treatment of sewage. Forward osmosis technology is a low-carbon green new technology and new material technology, and its unique low cost makes it a research hotspot of membrane technology materials in the 21st century. This technology has the advantages of low energy cons...

AI Technical Summary

Problems solved by technology

[0003] At present, the application process of forward osmosis membrane technology devices on the market is complex, especially for the guarantee of high osmotic pressure draw solution concentrated water, which requires special technology and space barriers, and it is difficult to apply it to classroom experiment teaching.

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