Laboratory water supply and drainage system requirements? -common problem
water supply and drainage system requirements?
The laboratory water supply system includes pharma machinery water supply system, domestic water supply system and fire protection water supply system. The experimental water supply system is divided into general experimental water and experimental pure water. The pharma machinery pure water system belongs to an independent water supply system; The laboratory has different requirements for experimental water...
Text label: laboratory water supply system, clean laboratory drainage system
water supply and drainage system requirements?
The laboratory water supply system includes pharma machinery water supply system, domestic water supply system and fire protection water supply system. The experimental water supply system is divided into general experimental water and experimental pure water. The laboratory pure water system belongs to an independent water supply system; The laboratory has different requirements for the experimental water. The water quality of the circulating cooling water of the experimental instruments should meet the different requirements of various instruments for the water quality. For experiments with strong acid and strong alkali, emergency spray facilities should be set up nearby. When it is larger than 1m, decompression measures should be taken; sterile rooms and radioisotope laboratories are equipped with hot shower devices, and taps use foot switches, toggle switches or photoelectric switches. When the water supply system is installed, the water in the polluted area must pass through the cut-off water tank, the indoor fire hydrant should be set in the clean area, and the pipe inlet of the water supply system should usually be set up in a clean area, and the upward and downward water supply pipe network should be used to avoid the spread of pollution.
The laboratory water supply system should ensure the necessary pressure, water quality and water quantity. When the outdoor pipe network cannot meet the water requirements of the upper laboratory, or when the water pressure of the outdoor pipe network is periodically insufficient, especially to ensure the safe water supply of the laboratory , should set up the layout of pressurized equipment or roof water tank and water pump for the upper laboratory use; for the chemical laboratory, due to the installation of emergency showers, emergency eyewashes, etc., the water flow should be large enough, and the response of opening the water discharge valve should be fast. Commonly used water supply methods are: direct water supply method. When the number of outer layers of the laboratory is not high and the water pressure and water volume can be satisfied, the direct water supply method can generally be used. In this method, there is no pressurized water pump in the room. Outdoor water supply pipe network; the water supply method with a high-level water tank, when the water pressure in the outdoor pipe network drops during the peak water consumption period, so that it cannot meet the water requirements of the upper floors of the building, or when the water pressure of the outdoor pipe network is periodically insufficient, it can be used. This method; the water supply method with a pressurized pump, when the water pressure of the outdoor pipe network is lower than the water pressure required for water use in experiments, living, firefighting, etc., and the water consumption is uneven, this method can be used. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for laboratories and clean laboratories.
drainage system sets up corresponding drainage systems according to the composition, nature, flow and discharge rules of the discharged wastewater. Wastewater that is not seriously polluted can be directly discharged to the outdoor drainage pipe network without treatment; wastewater containing multiple components, harmful substances, which can interact with each other and damage the pipeline should be separated from domestic sewage and pretreated to make it meet the standards. Drain into outdoor drain network or divert discharge. Drainage pipes can be divided into rigid pipes and flexible pipes according to their pipe characteristics. Rigid pipes include cast iron pipes, concrete pipes, ceramic pipes, etc., which are all pipes made of traditional materials. The advantages are good rigidity, high ring stiffness, but corrosion resistance. It has poor performance and needs special anti-corrosion treatment when used as a sewage pipeline. The use is generally 10 to 20 years. Its biggest disadvantage is that it is easy to break, serious leakage, and easy to cause secondary pollution. Compared with traditional steel pipes, plastic pipes have the characteristics of light weight, corrosion resistance, high pressure resistance, sanitation and safety, low water flow resistance, energy saving, and convenient installation, which are favored by the pipeline engineering community. The buried part of the drainage pipe in the laboratory is recommended to use flexible cast iron pipe, UPVC or HDPE pipe, which has relatively good acid and alkali resistance and organic solvent corrosion resistance. To meet the requirements of anti-corrosion of organic solvents, if the laboratory only produces acid drainage, the above-ground part of the pipeline can be made of hard polyvinyl chloride plastic pipe.
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