What principles should be followed in the design of secondary reverse osmosis purified water treatme

What principles should be followed in the design of secondary reverse osmosis purified water treatment equipment?

by:Ocpuritech     2021-06-14
What principles should be followed in the design of secondary reverse osmosis purified water treatment equipment? Author: reverse osmosis membranes for water purification equipment is the core technology equipment for various water supply and water quality, reverse osmosis pure water treatment equipment reverse osmosis membrane desalination rate has stabilized, and the performance in the long run stable. In the reverse osmosis system, the balance of equipment investment and operating cost should be considered, which can not only ensure the production water volume and water quality, but also reduce investment and energy consumption. It should be considered when designing. There are two types of membrane materials: polyamide composite membrane and cellulose acetate membrane. Although cellulose acetate membrane is relatively cheap, it is less used because of its salt rejection rate (≥95-97%) and the membrane is easily eroded by bacteria. Water production flux is the amount of water produced per unit of effective membrane surface. Low water flux means low pollution rate. If you want to reduce water flux, you can choose membrane elements with a larger membrane area or use a larger number of membrane elements. The lateral flow velocity decreases the membrane fouling rate, and the high lateral velocity can increase the degree of turbulence, thereby reducing the precipitation of particulate matter on the membrane surface or accumulation in the gaps of the screen, thereby reducing the risk of incompatible salt deposits on the membrane surface. The secondary reverse osmosis pure water treatment equipment is designed according to certain principles. This design makes the pure water treatment equipment run more stable and the effluent quality is higher. Today, let’s environmental protection and introduce what the design of pure water treatment equipment should follow. Principles? 1. The whole set of equipment runs according to one procedure. Even if there is no water demand, the ultrapure water preparation system keeps circulating. 2. The RO device is equipped with a self-circulating pipeline. When the tank is full and no water is required, the equipment automatically switches to a small cycle operation state, and the secondary RO product water returns to the intermediate water storage tank. 3. Continuously monitor the conductivity of the primary and secondary RO product water and the PH value of the primary product water, with unqualified water discharge and automatic alarm functions. 4. The system runs continuously for 24 hours. When there is no water demand, the low flow rate circulation in the water distribution pipeline is maintained to prevent stagnant water. 5. In order to facilitate the verification of the effluent quality of each treatment unit and confirm the performance of the individual equipment, sampling points are set for each equipment unit. 6. Online monitoring of RO inlet water temperature, flow, pressure and product water conductivity, pH value, flow and pressure, etc., RO inlet water temperature, product water conductivity, pH value, etc. have records, not less than 6 months Storage space and printing function. 7. System disinfection: The system uses ultraviolet disinfection; it is equipped with an independent cleaning system. 8. The safety of the equipment is reliable, and the safety of the equipment is protected on the premise of protecting the operator first, and protection devices and warning signs are added to the hidden dangers.
Custom message
Chat Online 编辑模式下无法使用
Chat Online inputting...
WhatsAPP图标