GMP workshop reverse osmosis device
GMP workshop reverse osmosis device
There are two keys to the production of pure water in the reverse osmosis facility of the GMP workshop, one is a selective semipermeable membrane, and the other is a certain pressure; there are many pores on the reverse osmosis semipermeable membrane, and the size of these pores is similar to that of the semipermeable membrane. The size of water molecules is comparable, because bacteria, most organic pollutants and hydrated ions are more...
Text label: GMP workshop design and installation, GMP pharmaceutical cleanroom engineering installation, GMP pharmaceutical cleanroom reverse osmosis device
GMP pharmaceutical cleanroom reverse osmosis device
There are two keys to the production of pure water in the reverse osmosis facility of the GMP workshop, one is a selective semipermeable membrane, and the other is a certain pressure; there are many pores on the reverse osmosis semipermeable membrane, and the size of these pores is similar to that of the semipermeable membrane. The size of water molecules is similar. Since bacteria, most organic pollutants and hydrated ions are much larger than water, they cannot pass through the reverse osmosis semi-permeable membrane and are separated from the water phase passing through the reverse osmosis membrane. There are many impurities in the water. Among them, soluble salts are the most difficult to remove; the salt removal rate of reverse osmosis is mainly determined by the selectivity of reverse osmosis semi-permeable membrane, and the salt removal rate of reverse osmosis membrane elements with higher selectivity can be as high as 99.7%; Combined to form a reverse osmosis system, the series circuit of the reverse osmosis membrane stack can be expanded into a graded parallel circuit, graded sewage discharge, or a dual-channel and combined design method can be used to strengthen the control performance of the system; the multi-stage type is mainly used to improve water recovery. The use of two-stage reverse osmosis is to further improve the desalination rate and obtain higher permeate water quality; the reverse osmosis system can be used alone or in combination with an ion exchange system and an electric desalination system to improve the water system. The overall treatment capacity can improve the quality of product water; the processes and equipment of the three pure water production methods of distillation, ion exchange and electrodialysis are complex and energy-intensive, and the normal operation of the electric desalination device will cause the water to enter the water. There are strict requirements for water quality, and it is generally set after RO.
The secondary reverse osmosis device can fully retain the particles and bacteria in the purified water, and the pollutant removal rate can reach more than 90%-95%. It plays an important role in improving the water quality of the entire purified water system. From the overall technical and economic effects It has obvious advantages; the water recovery rate of the secondary reverse osmosis device is 20%-40%, and the other 60%-80% of the water is discharged as the secondary reverse osmosis concentrated water, and the discharge volume is large, so the concentrated water is fully utilized. It is very important to reduce the cost of water production and improve the reuse rate of water; the raw water storage tank should be equipped with high and low water level electromagnetic induction level gauges to dynamically monitor the liquid level of the water tank. Condition, the material of the water tank is mostly non-metal; the raw water pump can be a common centrifugal pump, and the pump should be equipped with a high-temperature protector and a pressure controller to improve the life of the pump; if the raw water is well water, the well water often contains very fine particles of dust. , humus, starch, cellulose, bacteria and algae microorganisms should be pretreated with raw water, and flocculants should be added to destroy the stability of the sol, so that fine colloidal particles flocculate into larger particles, which are pre-filtered by sand filtration and carbon filtration. To remove these particles, the filter material used in sand filtration is mostly quartz sand with large particles. After being treated by a mechanical filter, the turbidity of the effluent meets the water inlet index of the reverse osmosis system. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for GMP workshops and clean workshops.
The structure of the reverse osmosis machine varies depending on the form of the membrane. Generally, there are four types: frame type, tubular type, coil type and hollow fiber type, which can be used for the production of purified water. The driving force of reverse osmosis is the two sides of the membrane. In general, the range of this value is 2-10MPa; due to the acidic effluent of reverse osmosis, the metal membrane shell will be gradually corroded. Requirements; reverse osmosis host design, the residual reverse osmosis reference water temperature is 25 ℃, the water utilization rate should reach 70%-75%, and the total desalination rate of the reverse osmosis system should be greater than 97%; the secondary purification pump should be a sanitary pump , a drain valve should be installed at the bottom of the pump to drain the water, the pump should be equipped with a high overheat protector, a pressure controller, and a water volume monitor to improve the life of the pump, and the power of the pump should be large enough to make the system The water flow rate is more than 2m/s; although the whole purified water system is treated by the above processes to make the water quality meet the water quality requirements, but in order to prevent the stagnant water on the pipeline and the inner wall of the container pipeline from breeding bacteria and affecting the water supply quality, reverse osmosis is used in reverse osmosis. High-power ultraviolet sterilizers should be installed at the end of the water supply pipeline at the inlet and outlet of the processing unit to protect the reverse osmosis processing unit from microbial contamination that may occur in the water system and prevent or delay the growth of microbial cells in the pipeline system.
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