Product Details:
The mixed bed is a mixture of ion exchange columns, which are designed for ion exchange technology. The so-called mixed bed, is a certain proportion of yang, anion exchange resin mixed in the same exchange device, the exchange of ions in the fluid, remove. As the proportion of cationic resin than the anion resin, so in the mixed bed resin resin in the upper yang resin. General Yang, Yin resin loading ratio of 1: 2, there are loading ratio of 1: 1.5, according to different resin discretion to consider the choice. Mixed bed is also divided into in vivo synchronous regeneration of mixed bed and in vitro regeneration of mixed bed. Synchronous regeneration of mixed bed in the operation and the entire regeneration process are carried out in the mixed bed, the resin does not move out of the equipment, and the sun, the resin at the same time regeneration, so the required ancillary equipment, easy to operate.
The equipment for the mixing process includes mixed ion exchangers and in vitro regeneration equipment. Among them, in vitro regeneration equipment mainly includes resin separator, yin (resin) regenerator, resin storage tower, mixed resin tower and acid-base regeneration equipment. The main characteristics of the domestic mixed bed treatment process is reflected in the resin separation and regeneration process. Resin separation and regeneration process there are three.
The shell is made of high quality 304 stainless steel or carbon steel lined with built-in strong or weak anion and cation exchange resin and macroporous adsorption resin to become an overcast, cation bed or organic cleaner.
Mixing bed is mainly used to reduce the hardness of water, alkalinity and anions and cations, making it softened water or deionized water.
Equipment advantages:
1, the effluent quality is good, the pH value of the water is close to neutral.
2, the water quality and stability, short-term operating conditions change (such as water quality or composition, running flow rate, etc.) on the mixed bed water quality has little effect.
3, intermittent operation of the impact of water quality is small, to restore the time required for water before the outage is relatively short.
4, the recovery rate of 100%
Applications:
Mixed bed is generally placed in the electrodialysis or reverse osmosis device (or directly applied to the lower salt content of water), further desalination of water can be made of high water, widely used in electronics, chemicals, medicine, atomic energy, electricity, etc. industry.
Composition and performance:
Mixed bed shell made of glass fiber reinforced plastic, plexiglass, stainless steel, carbon steel, corrosion, etc., the appearance of cylindrical, diameter Φ200-2500mm, water from 0.5t / h-98t / h. The bed is loaded with strong acid cation exchange resin, the anodic bed is loaded with strong alkali anion exchange resin. The loading height is always in the range of 1000-2400 mm. There is no supporting layer at the bottom of the small filter cap type equipment. There are different sizes of large and medium-sized equipment. Layer (it is not recommended to do so because of the acidity of the quartz sand and acid will produce a chemical reaction, the impact on water quality), countercurrent regeneration fixed bed resin top 200 mm thick fat layer resin (special resin used to cover the following Of the resin). Plexiglass column running pressure ≤ 0.15MPa, other materials, equipment operating pressure ≤ 0.6MPa. The bed is equipped with acid box, acid pump regeneration system, the cathode bed is equipped with alkali box, alkali pump regeneration system.
Regeneration steps:
run
The system has two kinds of water way: softening (softener water) water and early desalination (reverse osmosis water) water, respectively, by the control valve control of the water.
Operation, the beginning of desalination water control valve, inlet valve, water valve, other valves should be closed!
Backwash
Close the inlet valve, water valve; open the backwash water valve, backwash discharge valve to 10m / h backwash 15min. Then, close the backwash water valve, backwash the drain valve. Standing, settling 5 ~ 10min. Open exhaust valve, the middle row of valves, part of the drainage to the resin layer on the surface of about 10cm, close the exhaust valve, the valve row.
regeneration
Into the water valve, add acid pump, into the acid valve, the valve, to 5m / s, 200L / h on the cationic resin regeneration, with reverse osmosis water to the anions to clean the resin to maintain the liquid surface in the resin layer 10cm on the surface. 30 minutes after the regeneration of cation resin, off the water valve, add acid pump, into the acid valve, open backwash water valve, add alkali pump, into the alkali valve to 5m / s, 200L / h on the anion resin regeneration, with reverse osmosis Water production on the cationic resin cleaning, to maintain the liquid surface in the resin layer on the surface 10cm, regeneration 30min.
Replace, mix, rinse
Off the alkali pump, into the alkali valve, open the water valve, up and down the same time the water on the resin replacement, cleaning. After 30min, close the inlet valve, backwash water inlet valve, middle row valve, open backwash discharge valve, intake valve, exhaust valve, pressure 0.1 ~ 0.15MPa, gas volume 2 ~ 3m3 / (m2 · min), mixed resin 0.5 ~ 5min. Off the anti-washing discharge valve, intake valve, settlement 1 ~ 2min. Open the water valve, is washing the discharge valve, adjust the exhaust valve, irrigation to the column without air, the exhaust valve, the resin rinse. When the conductivity reaches the requirements, open the water valve, off the discharge valve, began to water.
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