Clean workshop process water

Clean workshop process water

There are many preparation methods for purified water in clean workshops, such as distillation, ion exchange, reverse osmosis, etc. When determining the process flow of purified water, it should be based on the production process requirements, combined with local water quality, water supply conditions, energy supply, Three waste treatment requirements, as well as investment control and other factors are preferred...

Text label: clean pharmaceutical cleanroom construction, clean workshop installation, clean pharmaceutical cleanroom process water

Clean pharmaceutical cleanroom process water

There are many preparation methods for purified water in clean workshops, such as distillation, ion exchange, reverse osmosis, etc. When determining the process flow of purified water, it should be based on the production process requirements, combined with local water quality, water supply conditions, energy supply, The three-waste treatment requirements, investment control and other factors are optimized; in order to ensure the minimum drop in the quality of purified water during the transportation process, it is necessary to choose pipes with excellent chemical stability, that is, the minimum dissolved substances in the required purified water; the inner wall of the pipe is rough , Even small bumps will cause the deposition of particles and the reproduction of microorganisms, resulting in unqualified particles and bacteria; uneven joints or mismatched gasket sizes will produce water eddy currents and water retention, resulting in particle deposition and Microbial reproduction; when stainless steel is used, high-quality stainless steel with well-welded and polished inner walls should be selected, and automatic argon arc welding should be used to ensure good welding and smooth inner walls; passivation treatment must be performed after welding to form a surface of stainless steel. The dense oxide film layer makes it resistant to oxidation and corrosion at room temperature.

The vent of the purified water storage tank is the main way for the outside dust and bacteria-containing air to invade the water system. Therefore, a hydrophobic breathing filter with exact effect must be installed to prevent the backflow of dust particles and bacteria in the atmosphere. In order to prevent the purified water from being polluted by microorganisms during the transportation process or in the static state, a circulating water supply pipeline system should be used for the transportation of purified water, and a certain flow rate should be maintained to make the water flow in a turbulent state to prevent the formation of microbial biofilms on the pipe wall. The membrane is the result of certain microbial strains, it can protect the microorganisms, and it is difficult to kill it with general disinfectants, and its shedding becomes a new colony. The slope should be maintained during the design and installation of the pipeline to facilitate the discharge of the remaining water, and the parts that make the water stagnant and difficult to clean should also be avoided; the flow rate in some parts of the pipeline is too low, and microorganisms are easy to form on the surface of these pipelines, valves and other areas. Biofilm has become a persistent source of pollution. It is difficult to eliminate biofilm, and it is best to prevent its formation. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean workshops and sterile workshops.

Regular cleaning of purified water storage tanks and water delivery systems is an important means to ensure the quality of purified water, preventing deposits and microorganisms from accumulating on the inner walls of storage tanks and pipelines after long-term operation, which will reduce water quality; Disinfection methods include ozone disinfection and pasteurization, and saturated steam can also be used. In order to ensure that water for injection is not subject to secondary pollution during storage and transportation, there are special requirements for the materials of storage tanks, transportation pipelines and pipe fittings. Non-toxic, corrosion-resistant, sterilizable stainless steel or stainless steel with polished inner walls must be used. Other materials that do not pollute the water for injection; when using stainless steel materials, stainless steel pipes with polished inner walls are required, and automatic argon arc welding is used to ensure good welding and smooth inner walls; the vent of the water for injection storage tank is dusty and bacteria-containing outside. The main way for air to intrude into the water for injection system, the ventilation port of the storage tank must be installed with a 0.22μm hydrophobic breathing filter to prevent the intrusion of particles and microorganisms. In order to prevent the stored water for injection from being contaminated by microorganisms, the water for injection can be kept at a temperature of more than 70°C.

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