Ultrawater purifier for lab

Abstract

The invention provides an ultrawater purifier for a lab, comprising a preprocessing unit, a plurality of deep processing units in parallel, a precision processing unit and an intelligent programmable control system, wherein the preprocessing unit comprises a plurality of ultrafiltration membrane assemblies in parallel, a micro-filtration membrane assembly and an active carbon filter; each deep processing unit comprises a diaphragm pump and a reverse osmosis membrane assembly connected in series; the diaphragm pump is connected with the active carbon filter; the precision processing unit comprises a first flow meter, a softening column assembly, an electrodeionization module, a second flow meter, a purified column assembly and a resistivity meter which are sequentially connected in series; the first flow meter is connected with the reverse osmosis membrane assembly; and the intelligent programmable control system is respectively electrically connected with the diaphragm pump, the resistivity meter, the first flow meter and the second flow meter. The ultrawater purifier for the lab has the beneficial effects that running water can be transformed into ultra pure water, the water quality can reach 18Momega.cm at most, the operation period is long and stable, the water quality of the produced ultra pure water is good, the ultra pure water is easy to prepare, and the secondary pollution of the water quality can be effectively avoided.

Description

technical field [0001] The invention relates to a pure water preparation device, in particular to a laboratory ultrapure water machine. Background technique [0002] At present, pure water and ultrapure water are one of the indispensable and very important basic raw materials of modern industry, and have a very wide range of uses in the fields of electronics, electricity, chemistry, medicine, biology, information, etc.; for scientific research institutions, especially various Due to the large and scattered demand for pure water in such laboratories, there is a special need for an integrated equipment that can use tap water or similar water sources as raw water to facilitate the preparation of ultrapure water. [0003] In the existing technology, the processes used in the preparation of pure water mainly include: reverse osmosis + ion exchange, reverse osmosis + electrodeionization, two-stage reverse osmosis process, ion exchange process, etc.; the purity of water prepared by...

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Problems solved by technology

[0003] In the existing technology, the processes used in the preparation of pure water mainly include: reverse osmosis + ion exchange, reverse osmosis + electrodeionization, two-stage reverse osmosis process, ion exchange process, etc.; the purity of water prepared by ion exchange process is relatively high , and the effluent water quality is stable, but the process is complicated, and a large amount of acid and alkali are consumed in the system regeneration process, which causes great pollution to the environment; the biggest advantage of the electrodeionization process is that it can continuously produce ultrapure water without chemical The effluent water quality is relatively stable, but the cleaning and maintenance of the membrane is relatively difficult; the two-stage reverse osmosis process is simple, the effluent water quality is stable, no acid-base regeneration is required, it can run continuously, and the membrane cleaning and maintenance are relatively easy, but the desalination rate of the secondary system Technical problems such as low, high conductivity of effluent water, and low purity of water

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