Dust-free workshop deionized water production process and equipment
Dust-free pharmaceutical cleanroom deionized water production process and equipment
Raw water generally contains suspended solids, microorganisms, colloids, dissolved gases, various organic compounds, inorganic compounds and other impurities. There are usually two pretreatment methods, coagulation sedimentation method and mechanical filtration method; suspended solids and colloidal substances The surface is often negatively charged...
Text label: clean room equipment, deionized water production process and equipment
Deionized water production process and equipment in clean pharmaceutical cleanroom
Raw water generally contains suspended solids, microorganisms, colloids, dissolved gases, various organic compounds, inorganic compounds and other impurities. There are usually two pretreatment methods, coagulation sedimentation method and mechanical filtration method; suspended solids and colloidal substances The surface is often negatively charged, which can be aggregated after neutralization. Usually, high-charged cations or high molecular polymers are added to neutralize the negative charge to achieve the purpose of coagulation and sedimentation; Water treatment of suspended solids, organic matter, colloidal particles, microorganisms and some heavy metal ions in water to purify water supply; according to different filter media, it can be divided into natural quartz sand filter, multi-media filter, activated carbon filter and manganese sand Filters, etc., can be divided into single-flow filters and double-flow filters according to the water inlet method.
Electrodialysis is based on the principle of directional movement of charged ions in a DC electric field. The ion exchange membrane in the electrodialysis device has the function of selective permeation, and the cation exchange membrane can only permeate cations. The anion exchange membrane can only pass through anions; under the action of the DC electric field, the ions in the raw water pass through the ion exchange membrane to the anode and cathode respectively, thereby reducing the salt concentration in the middle chamber to become fresh water, and the salt concentration in the chambers on both sides. increased into concentrated brine. The reverse osmosis method is a process in which an external pressure higher than the osmotic pressure of the solution is applied to the raw water side of the semipermeable membrane. When the raw water passes through the semipermeable membrane, only water is allowed to pass through, and other substances cannot pass through and are trapped on the membrane surface; and Compared with other water treatment methods, it has the advantages of no phase change, normal temperature operation, simple equipment, high efficiency, less land occupation, convenient operation, less energy consumption, wide adaptability, high degree of automation and good water quality. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean rooms and clean rooms.
Ion exchange method is to filter raw water with spherical resin, and the ions in the water will be exchanged with the ions fixed on the resin; the ion exchange resin can be packaged in different ion exchange beds, divided into anion exchange bed and cation exchange bed , the exchange resin can also be mixed together and placed in the same ion exchange bed, no matter which form, when the resin and the charged impurities in the water are exchanged, the hydrogen ions and hydroxide ions on the resin must be carried out. Regeneration: The regeneration procedure is just the opposite of the purification procedure, using hydrogen ions and hydroxide ions for regeneration to exchange impurities attached to the ion exchange resin.
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