The Water treatment machinery is composed of storage tanks, conveying pumps, conveying circulation pipelines, water points, monitoring and control systems. Temperature and other needs, and maintain water quality in line with pharmacopoeia requirements.
Microorganisms grow and multiply rapidly under suitable nutrient conditions, suitable oxygen content, suitable pH value and suitable ambient temperature. Therefore, the key concepts to consider in the design of liter Water treatment machinery: First, the water quality index, the water quality index at the point of use is in line with regulations and internal control standards; the second is control measures, which can effectively control the growth and reproduction of microorganisms and prevent the formation of microbial films. measure.
In the Water treatment machinery, the storage tank should preferably be a vertical storage tank, the material of the water tank should be stainless steel, and the capacity of the appropriate size should be selected, in line with the principle of exhaustion and dead angle, avoid multi-tank design, and nitrogen can be used if necessary. Sealing measures to avoid secondary pollution.
The design of the heat exchanger takes into account factors such as material, structure, heat exchange area, etc., select the appropriate roughness tank and passivation treatment, adopt the sanitary structure design, follow the design principle of easy exhaust, and the heat exchange area can be based on extremes. Heat demand design to avoid process demands that cannot be met in extreme cases.
The materials used in the conveying circulation pipeline should be non-toxic and corrosion-resistant, and the commonly used materials are stainless steel 304 and 316L. The inner surface roughness of pipes, valves and tanks is Ra<0.6μm, and the outer surface roughness is Ra<0.8μm. Welding is preferred for the connection of the conveying circulation pipeline, followed by clamp connection or flange connection, and threaded connection is not allowed. Since the dead angle of the conveying circulation pipeline may form biofilm, it should be minimized or special disinfection measures should be taken.
The design of the water point should avoid adding filters and reduce dead space to reduce the risk of microbial contamination. There should be a sampling port at the water point to facilitate the sampling, testing and analysis of daily water quality.
The monitoring and control system realizes effective monitoring of liquid level, flow rate and pressure, which facilitates the debugging and supervision of the system, so that the system always maintains good working performance and ensures that the water that meets the requirements can be produced.
In order to ensure the quality of purified water storage and distribution to various water points, a disinfection and sterilization device should be installed at the end of the purified water storage and distribution system to control the content of microorganisms. Commonly used disinfection methods include pasteurization, ultraviolet disinfection and ozone disinfection, and users can choose according to the actual situation.