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Basic water quality requirements for water for injection systems

2021-04-21

Basic water quality requirements for water for injection systems


Wenzhou Haidoneng Environmental Protection Equipment Technology Co., Ltd. produced a 0.5 ton belt softening two stage reverse osmosis injection water system

0.5吨带软化全自动反渗透带注射用水系统.jpg

1. Water for injection system is composed of water treatment equipment, storage equipment, distribution pump and pipe network, etc.There is a possibility of external pollution caused by raw water and external causes of the water system, and the pollution of raw water is the main external pollution source of the water system.The United States Pharmacopoeia, European Pharmacopoeia and Chinese Pharmacopoeia all clearly require the raw water of pharmaceutical water to meet the quality standard of drinking water at least.If not up to the drinking water standard, the first to take pre-purification measures.Because Escherichia coli is an obvious sign of water pollution, there are clear international requirements for Escherichia coli in drinking water.Other bacteria are not subdivided, in the standard with the "total number of bacteria", the total number of bacteria limit of China is 100 /ml, which indicates that the raw water in line with the drinking water standard also exists microbial pollution, and the pollution bacteria endangering the water system is mainly Gram-negative bacteria.Others such as unprotected vents of storage tanks or the use of inferior gas filters, water flowing back from contaminated vents can also lead to external contamination.

2. In addition, there is internal pollution during the preparation and operation of the water system.Internal pollution is closely related to the design, material selection, operation, maintenance, storage and use of water control and water pollution system.A variety of water treatment equipment may become the internal pollution source of microorganisms, such as raw water microorganisms are adsorbed on the surface of activated carbon, deionized resin, filter membrane and other equipment, the formation of biofilm, living in the biofilm of microorganisms by the protection of biofilm, general disinfectant does not work on it.Another source of pollution is in the distribution system.Microbes can form colonies on the surface of pipes, valves, and other areas and thrive there, forming biofilms that can become persistent sources of pollution.Therefore, some foreign enterprises have relatively strict standards for the design of water system.


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