In the water quality pretreatment system,Activated carbon filterIt can adsorb residual chlorine that cannot be removed in the previous stage filtration to prevent the oxidation degradation of the subsequent reverse osmosis membrane. At the same time, it can adsorb small molecule organic pollutants and other pollutants leaked from the previous stage, and has a significant adsorption and removal effect on water odors, colloids, pigments, heavy metal ions, etc. It also has the effect of reducing COD. It is possible to further reduce the SDI value of RO inlet water to ensure SDI<5, TOC<2.Oppm。

The main factors affecting the adsorption efficiency and service life of activated carbon filters are: the type and concentration of pollutants, the residence time of the airflow in the filter material, and the temperature and humidity of the air.

When selecting, the filter form and activated carbon type should be determined based on the type, concentration, and treatment air volume of pollutants.

Both upstream and downstream of the activated carbon filter should have good dust removal filters, and their efficiency specifications should not be lower than F7. Upstream filters prevent dust from clogging activated carbon materials; The downstream filter blocks the dust generated by the activated carbon itself.

2、 Fully automatic water softenerPrinciple:

Due to the fact that the hardness of water is mainly formed and represented by calcium and magnesium, it is generally usedcation exchange resinThe water softener replaces Ca2+and Mg2+(the main components that form scale) in the water. As the Ca2+and Mg2+in the resin increase, the efficiency of removing Ca2+and Mg2+gradually decreases.

After the resin absorbs a certain amount of calcium and magnesium ions, it must be regenerated. The regeneration process is to rinse the resin layer with saline solution in the salt tank, replacing the hardness ions on the resin. The resin is then discharged from the tank with the regeneration waste liquid, and the softening exchange function of the resin is restored.

Due to the fact that the hardness of water is mainly formed and represented by calcium and magnesiumSodium ion exchangeThe principle of softening treatment is to pass the raw water through a sodium cation exchange resin, allowing the hardness components Ca2+and Mg2+in the water to exchange with Na+in the resin, thereby adsorbing Ca2+and Mg2+in the water Mg2+， Soften the water.

IIIFully automatic water softenerThe specific workflow is as follows:

Operation of A sodium ion exchanger (working)

Under a certain pressure (0.2-0.6Mpa) and flow rate, the raw water enters the container (resin tank) containing ion exchange resin through the controller valve chamber. The Na+contained in the resin exchanges with the cations (Ca2+, Mg2+, Fe2+, etc.) in the water, so that the Ca2+and Mg2+ion content in the effluent of the container reaches the predetermined requirements, achieving the softening of hard water.

B、 Sodium ion exchanger backwash

After resin failure, backwash with water from bottom to top before regeneration. The purpose of backwashing is twofold. Firstly, by backwashing, the tightly compressed resin layer during operation is loosened, which is beneficial for the resin particles to fully contact with the regeneration solution; One is to discharge the suspended solids and broken resin accumulated on the surface of the resin with the backwash water, so that the water flow resistance of the exchanger will not increase.

C、 Sodium ion exchanger regeneration and salt absorption

The regenerated salt solution flows through the failed resin layer at a certain concentration and flow rate to restore its original exchange capacity.

D、 Sodium ion exchanger replacement (slow cleaning)

After the regeneration solution is completed, if there is still salt solution in the exchanger that has not participated in the regeneration exchange, clean it with clean water at a flow rate less than or equal to the regeneration solution flow rate (slow cleaning) to fully utilize the regeneration effect of the salt solution and reduce the load of the washing process.

E、 The purpose of sodium ion exchanger forward cleaning (rapid cleaning) is to remove residual regenerated waste liquid in the resin layer, usually cleaned at normal flow rate until the effluent is qualified.

F、 Inject the required amount of salt water into the regenerant tank by injecting the solution back into the regenerant tank

4Fully automatic water softenerProduct features:
1. High degree of automation and stable water supply conditions.
2. Advanced program control device, accurate and reliable operation, replaces manual operation, and fully realizes automatic conversion of various links in water treatment.
3. High efficiency, low energy consumption, and economical operating costs. Due to the reasonable overall design of the water softener, the exchange capacity of the resin can be fully utilized. The equipment adopts a jet type salt suction instead of a salt pump, reducing energy consumption.

4. The equipment has a compact structure, occupies a small area, saves infrastructure investment, is easy to install and debug, and is easy to use and operate.

5、 Fully automatic water softenerPurpose:

Mainly used to remove suspended solids, sediment, manganese, and agglomerated particles in raw water, as well as adhesive colloidal particles that cannot be removed by sedimentation methodsFully automatic softened water treatment equipment.

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