Clean room workshop pure water preparation requirements

Clean room workshop pure water preparation requirements

Clean room microfiltration is a membrane process used to remove fine particles and microorganisms. No waste water flow is generated in the microfiltration process. If the size of the filter element is the same, the shell of the microporous filter can pass, but It is the material and pore size of the filter element that are different. In the final filter,...

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Preparation requirements for pure water in clean room pharmaceutical cleanroom

Clean room microfiltration is a membrane process used to remove fine particles and microorganisms. No waste water flow is generated in the microfiltration process. If the size of the filter element is the same, the shell of the microporous filter can pass, but The material and pore size of the filter element are different. In the final filter, the size of the pore size is usually 0.04-0.45μm; the microporous filter is generally used for the retention of microorganisms after some components in the effluent system, where there may be growth of microorganisms , the effect of microporous filters is obvious in this area, but appropriate steps need to be taken to ensure the integrity of the filter during installation and replacement of membranes to ensure its inherent performance; microporous filters are suitable for applications. It is used in the intermediate process of the purified water preparation system, not suitable for the circulating distribution system; the filter should not be the only microbial control unit in the system, but should be part of the comprehensive microbial control measures, reducing the location and number of microporous filters Makes maintenance easier.

Ultrafiltration system is used as the pretreatment of reverse osmosis, which is used to remove organic matter, bacteria and pyrogens in water to ensure the quality of reverse osmosis influent water. Ultrafiltration and reverse osmosis use a similar cross-flow process. Parallel flow to the porous membrane filtration surface, the water flows through the membrane through the pressure difference, particles, organic matter, microorganisms, heat sources and other pollutants cannot pass through the membrane and enter the concentrated water flow for discharge, which allows the filter to be self-cleaning and reduce The frequency of filter replacement; the equipment of ultrafiltration system mainly includes raw water tank, raw water pump, disc filter, ultrafiltration device, ultrafiltration production water tank, backwash pump, etc.; ultrafiltration cannot completely remove pollutants in water, ions and Removal of organics varies with membrane material, structure and porosity and is very effective for the removal of many different organic molecules, ultrafiltration cannot block dissolved gases; most ultrafiltration removes contaminants through a continuous flow of wastewater, Under normal circumstances, the wastewater flow varies, generally 2%-10%. Some ultrafiltration systems may cause blockages and should be treated in time; ultrafiltration flow and cleaning frequency are based on the water quality and pretreatment. vary. The ultrafiltration system is used as the pretreatment of reverse osmosis. The system can adapt to a wide range of changes in influent water quality. It can be used when the turbidity is less than 50, and the quality of the produced water is good. The SDI value of the produced water is less than 3, and the ultrafiltration The adoption of the reverse osmosis device can more effectively protect the reverse osmosis device, so that the reverse osmosis membrane is not polluted, and usually the service life can be extended from 3 years to 5 years, or even longer; Under the premise of the same water production, the number of membranes used can be reduced, thereby reducing the equipment investment of the reverse osmosis device. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, installation and other supporting services for clean rooms and clean workshops.

Reverse osmosis system undertakes the main desalination task. Reverse osmosis is a pressure-driven process. It uses a semi-permeable membrane to remove dissolved salts in water, and at the same time removes some organic macromolecules and small particles that were not removed in the previous stage. The semi-permeable membrane can Permeate water, but can not penetrate other substances; the product water of the pretreatment system enters the reverse osmosis membrane group. Under the action of pressure, most molecules and other trace particles pass through the reverse osmosis membrane, and become product water after collection. The pipeline enters the subsequent equipment, and most of the salt, colloid and organic matter in the water cannot pass through the reverse osmosis membrane; when the reverse osmosis device stops running, it is automatically flushed for 3-5 minutes to remove the dirt deposited on the membrane surface, and the device and the reverse osmosis device are automatically flushed. The osmosis membrane is effectively maintained; the reverse osmosis has a temperature limit in operation, and most reverse osmosis systems operate at 5-28 ℃; the reverse osmosis membrane must prevent the formation of scale, membrane fouling and Membrane degradation and scale control are usually achieved through the softening process of the water before the membrane. The reduction of reverse osmosis membrane fouling can be achieved through reliable pretreatment in the early stage to reduce impurities and microbial contamination.

Nowadays, it is very common for us to utilise in extraction machine. And the quality of is decisive to production efficiency.

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