Application of Reverse Osmosis Water Treatment System in Laboratory

Background

As people’s quality of life continues to improve, the requirements for water have become more stringent. However, along with the chemical industry, industrial pollution is increasing, causing serious water pollution and making the already scarce freshwater resources even more scarce. Likewise, water is a good solvent commonly used in laboratories, with strong solvency capacity, for various solvents and for washing instruments, etc. With the new development and wide application of analytical instruments, the requirement of water quality has become one of the key issues.

And pure water is very important in the laboratory, with a wide range of applications,  so the laboratory has a strict demand for the purity of water quality, and reverse osmosis technology can effectively prepare pure water, improve the efficiency of preparation and save costs. Compared with the traditional water purification process, this way is greener and environmentally friendly, and the use of acid and alkali is much less. Therefore, the application of reverse osmosis water treatment in the laboratory is crucial.

Application of Reverse Osmosis Water Treatment System

 

What is the Laboratory Water

The types of water most commonly used in laboratories can be classified as follows.

Distilled water

Distilled water is the most common type of pure water used in laboratories. Distilled water can remove most of the contaminants from tap water, but it cannot remove volatile impurities such as silica, ammonia, carbon dioxide, and some organic compounds.

In the early laboratory, distilled water was widely used because it was easy to prepare. However, although distilled water equipment is cheap but extremely energy-consuming, water consumption and slow water production speed, laboratory applications have gradually decreased in recent years.

Deionized water

Deionized water is obtained by using ion-exchange resins to remove anions and cations from water. However, there are still soluble organic substances in deionized water that can contaminate the ion exchange column, thereby reducing its effectiveness and affecting water quality.

Reverse osmosis water

With the maturity of reverse osmosis membrane technology, reverse osmosis water is now increasingly widely used laboratory water in laboratories. Reverse osmosis water can effectively remove impurities such as dissolved salts, viruses, bacteria, colloids, bacterial endotoxins, and most organic matter from water, overcoming many of the disadvantages of distilled and deionized water. The desalination rate of NEWater reverse osmosis membrane can reach about 99%. The whole production process is low energy consumption, safe, and pollution-free.

Ultrapure water

The standard for ultrapure water is water with a resistivity of 18.2 MΩ.cm (25°C) Ultra-pure water is suitable for experiments with high water quality requirements, except for water, where the ionic content is close to none. Ultra-pure water is not the same in terms of TOC, bacteria, endotoxin, and other indicators because of the requirements of various experiments, therefore, it is necessary to determine the relevant standards of ultra-pure water according to the requirements of the experiment. NEWater can design the best laboratory water treatment system according to your experimental needs.

Also, since ultrapure water is extremely susceptible to secondary contamination by air, even when stored, the resistivity decreases rapidly. Therefore, in order to ensure the accuracy of experiments in the laboratory, we recommend that ultrapure water be taken now and used now.

 Image 2 Laboratory water

What is Reverse Osmosis Water Treatment?

The principle of reverse osmosis water generation is that the water molecules pass through the reverse osmosis membrane under pressure to produce pure water, and the impurities in the water are retained and discharged by the reverse osmosis membrane. When the operating pressure is applied to the feed water (concentrated solution) side to overcome the natural osmotic pressure, the flow direction of the natural permeation of water molecules on the concentrated solution side will be reversed. Part of the water molecules in the influent (concentrated solution) will pass through the permeable membrane under strong pressure to become purified water on the side of the dilute solution, while some ions, organics, bacteria, viruses, etc. cannot pass through the pores of the sub-permeable membrane with too small diameter and are retained on the water inlet side of the membrane. Through this process, the purpose of separating and purifying the incoming water is achieved. This is the purpose of separation and purification.

The production process of reverse osmosis water is low in energy consumption, fast in water production, safe, and purely physical process with no chemical reaction. This economical, practical, safe, and efficient way of water production is now being used in more and more laboratories.

Figure 3 The basic principle of reverse osmosis water treatment technology

How Reverse Osmosis Water Treatment Systems are Used in Laboratories

For laboratory research, the requirements for water quality are relatively high, ordinary water sources can not meet the needs of laboratory use. NEWater’s laboratory reverses osmosis water purification equipment has the characteristics of high water quality, uninterrupted water production, automatic control, no sewage discharge, etc. Can effectively solve these problems, and, we ensure that the equipment water supply is normal, so as to ensure the safe, economic and energy-saving operation of the equipment.

NEWater uses three major steps to purify raw water into ultra-pure water. The first step is the primary purification pretreatment, mainly to filter out the particles of sediment and other substances in the water, the second is the core step, the raw water through the reverse osmosis membrane after the output of water called pure water, at this time this quality of water can meet the water needs of most enterprises, the third pure water again through the ion exchange resin treatment, the output of water is the requirement of ultra-pure water.

Figure 4 Process flow diagram of NEWater Laboratory's reverse osmosis plant

Pre-processing systems

It is mainly divided into three parts: precision cartridge activated carbon and softening. Its main purpose is to remove impurities larger than 5um from the water, including particles, suspended matter, odors, cations, etc. in the water.

PP cotton: primary filtration of raw water, removing coarse particles of impurities, sludge, colloids, suspended substances, etc. in water.

Granular activated carbon: adsorption of odor, color, organic matter, some heavy metals, etc. in water.

Carbon rod activated carbon: further removal of chlorine, organic compounds, foreign colors, odors, turbidity, etc.

Reverse osmosis system

As the core part of the equipment, the UPP laboratory ultra-pure water machine uses the original US imported RO reverse osmosis membrane, which can remove 98% of the impurities in the water, and after the RO reverse osmosis membrane, the water becomes pure water, which can then be used in experiments.

Ultra Purification System

In the raw water after RO reverse osmosis membrane into pure water, but for some laboratories on the water quality requirements are very high, the water can not contain any impurities, which needs to go through the ultra-purification system, which can remove all the impurities in the water so that the pure water into ultra-pure water.

Water storage tank

UPP laboratory ultrapure water machine uses imported original separated pressure barrel to store RO purified water, which can be used as it is, without waiting, and greatly improves the efficiency of the laboratory.

Water Purifiers for Laboratory

Some laboratories have special requirements for ultrapure water, so NEWater installs a disinfection and sterilization unit at the end of the laboratory ultrapure water machine to prepare ultrapure water without any bacterial or microbial growth. Depending on the requirements, some laboratories also require deep ionization desalination, ultrafiltration, and UV photo-oxidation units as terminal treatment units, all of which we offer on a custom basis.

NEWater laboratory reverses osmosis equipment can provide water support for numerous laboratory applications: HPLC, GC-MS, ICP-AES, ICP-MS, AAS, GF-AAS, TOC analysis, IC,  electrochemistry, PCR applications and analysis, meteorological analysis; precision instrumental analysis, amino acid analysis; analytical reagent and drug configuration and dilution; liquid chromatography, gas chromatography, atomic absorption, atomic fluorescence, atomic emission, ion chromatography, plasma emission spectroscopy for experimental use, ultra-trace and trace inorganic and organic analysis, molecular biology, microbiology, PCR application and analysis, DNA sequence analysis, mammalian cell culture, cell and culture media preparation, monoclonal antibody production, electrophoresis, gel analysis.

 

Advantages of NEWater Laboratory Reverse Osmosis Equipments

 

Ultrapure Water System for Laboratory

  • Original imported RO reverse osmosis membrane, to ensure the stability of pure water quality, extend the life of the post-stage purification column and ultra-purification column.
  • NEWater reverse osmosis aquatic pure water quality conductivity ≤ 5 μS/cm, organic matter retention rate > 99%, when MV> 200 Daltons, ion retention rate up to 97-99%, particle and bacteria retention rate > 99%, fully meet the requirements of laboratory pure water.
  • Built-in RO membrane anti-scaling timer automatic flushing function, effectively extending the service life of RO membrane.
  • The water intake of ultrapure water adopts an imported terminal capsule microfilter with 0.22um pore size, which effectively ensures the water quality of the output.
  • RO membrane, purification column, polished ultra-purification column, silent booster pump, UV UV sterilizer, UF ultra-filtration membrane, solenoid valve, joints,  are all imported with pure originality. Product performance is guaranteed to the maximum.
  • The equipment has simple and easy operation and control, no installation cost, compact structure, and a small footprint.
  • Reverse osmosis pure water treatment equipment with fault monitoring indication function can automatically detect and repair the host microcomputer control system of each error program, failure will automatically shut down, no supervision, reduce labor costs.

 

NEWater’s laboratory reverses osmosis systems to ensure the quality of pure water output and consistently addresses a wide range of water treatment needs for laboratories. At the same time, we support the customization of reliable and economical reverse osmosis systems for laboratory-based on customers’ raw water data and production water standards. If you have any technical inquiries, please feel free to contact us via info@newater.com.

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