I. Overview of Industrial Water Softening Equipment

The working process of the fully automatic boiler water softening equipment mainly includes water production, backwashing and salt absorption(Regeneration)Five processes: forward washing and filling the salt tank with water. Backwashing: It mainly has two functions. One is to loosen the resin layer, allowing the salt solution to fully contact the resin layer and making the displacement reaction more thorough. The second step is to wash away the suspended matter intercepted by the resin. This process usually requires5～15About minutes; Salt absorption(Regeneration)The process of injecting brine into the resin tank is that traditional equipment uses a salt pump to inject brine, while fully automatic equipment uses a dedicated built-in injector to draw in the brine. In the actual working process, the regeneration effect of salt water flowing slowly through the resin is better than that of simply soaking the resin in salt water. Therefore, water softening equipment all adopt the method of salt water flowing slowly through the resin for regeneration. This process generally requires60It takes about minutes, but the actual time is affected by the amount of salt used. Forward washing: To thoroughly rinse off the remaining salt, the resin should be flushed with raw water at a flow rate close to the actual working condition. The effluent from this process should be qualified soft water. Under normal circumstances, the quick rinse process is5～15Minutes.

Ii. Principles of Water Softening Equipment

The system, through the principle of ion exchange, removes scale-forming ions such as calcium and magnesium from water, thereby softening the water quality. The system is a set of equipment composed of resin tanks, salt tanks (for softening resin), controllers, etc. The system uses the siphon principle to draw salt, automatically fills water to dissolve salt, and the concentration ratio does not require auxiliary equipment such as salt pumps or salt dissolving equipment. The principle of sodium ion exchange softening treatment is to pass the raw water through sodium-type cation exchange resin to reduce the hardness components in the waterCa2+,Mg2+In the resinNa+Exchange with each other, thereby adsorbing substances in waterCa2+,Mg2+Soften the water. As followsRNaRepresenting sodium-type resin, its exchange process is as follows:

2RNa + Ca2+ = R2Ca + 2Na+

2RNa + Mg2+ = R2Mg + 2Na+

That is, after water passes through the sodium ion exchanger, in the waterCa+,Mg+Be replacedNa+.

When the sodium ion exchange resin becomes ineffective, regeneration treatment is required to restore its exchange capacity. The regenerant is an inexpensive and widely available salt solution. The regeneration process reacts as follows:

R2Ca + 2NaCl = 2RNa + CaCl2

R2Mg + 2NaCl = 2RNa + MgCl2

Iii. Features of Water Softening Equipment

lIt features a high degree of full automation, stable water supply conditions and a long service life. The entire process operates automatically, requiring only regular manual salt addition.

2High efficiency, low energy consumption, and low operating costs. Due to the reasonable overall design of this water softener, the exchange capacity of the resin is fully exerted. The energy consumption indicators of the equipment itself are significantly lower than those of general water softening equipment. The automatic control equipment does not require full-time operators, which brings many conveniences to users and generates good benefits.

Water consumption＜Water production volume2%

Salt consumption: Approximately required to regenerate one liter of resin160-240The specific salt consumption per gram should be determined based on the water quality indicators of the user's raw water.

Electricity consumption3-40WSince no salt pump is needed and it adopts220VThe power consumption of a common lighting power supply is only that of a common water softener1%

3The equipment has a compact structure, occupies a small area, and does not require a dedicated equipment foundation. It can be directly placed on a flat cement floor.

4It is easy to use, with simple installation, debugging and operation. The control components are stable in performance, which can relieve users of their worries.

5Corrosion-resistant, anti-pollution, lead-free brass orPPOThe control valve body made of material and the exchange tank made of fiberglass reinforced plasticPEThe quality of the salt tank, all these are sufficient to ensure the excellent performance of this equipment in terms of corrosion resistance, anti-pollution, odorlessness and harmlessness.

Iv. Technical Requirements for Water Softening Equipment

Raw water hardness3-10mmol/L;

Residual hardness of effluent≤0.03mmol/L;

Work pressure0.2-0.6MPa; Operating temperature2 -50℃;

Self-controlled power supply220V 50Hz; Power consumption10W;

Resin model001×7Type strong acid cation exchange resin;

The inlet pressure is lower than0.2MPaA pipeline pump needs to be installed.

Total pressure loss of the equipment0.03MPa.

PHScope1-14

High operating temperature: Sodium type≤120°C

Deformation expansion rate%:(H+-Na+)8-10

Regenerant concentrationNaCl:3-10%;HCl:4-5%;NaOH:4-5%

Regenerant dosageNaCl:(8-10%); Volume: Resin volume=1.5-2:1

HC1(4-5%)Volume: Resin volume=2-3:1

NaOH(4-5%); Volume: Resin volume=2-3:1

Regenerant flow rate5-8m/h; Regenerative contact time30-60min

Forward wash flow rate10-20m/h; Washing time: approximately30min