Device used for producing water supply javel water

Abstract

The invention provides a device used for producing water supply javel water. The device comprises a water softener, the water softener is connected with a saline preparation box, the saline preparation box is connected with a high-position saline box, the high-position saline box is connected with an ionic exchange membrane cell anode chamber with a flow guide weir, and an ionic exchange membranecell cathode chamber is connected with a high-position alkali liquor box; the anode chamber generates light salt brine and chlorine, and the cathode chamber generates hydrogen and sodium hydroxide; the anode chamber is connected with a gas-liquid separator, the gas-liquid separator is connected with a light salt brine circulation tank with a grating plate, and the light salt brine circulation tankis connected with the saline preparation box; the high-position alkali liquor box, the gas-liquid separator and the light salt brine circulation tank are connected with a chlorine negative pressure absorbing and sodium hypochlorite circular reaction system, and a sodium hypochlorite solution is generated by the chlorine negative pressure absorbing and sodium hypochlorite circular reaction system.After the javel water produced through the device is added into water, changes of indexes such as the pH value and the total dissolved solid of the water are small, generated disinfection by-productsare fewer, meanwhile, the running cost is low, and maintenance and management are convenient.

Description

technical field [0001] The invention belongs to the technical field of small and medium-sized water supply projects, and in particular relates to a device for producing sodium hypochlorite disinfectant for water supply. Background technique [0002] In my country's urban water supply projects, liquid chlorine disinfection is the most mature disinfection technology, but it has high safety requirements and needs to be filed with the public security department before use. Small and medium-sized water supply projects do not have the conditions for use. Applicable disinfection methods mainly include sodium hypochlorite, dichloride Chlorine oxide, UV and ozone disinfection. Among them, ozone and ultraviolet disinfection have no continuous disinfection effect, and can only be applied in small projects with short pipe networks; raw materials required for chlorine dioxide disinfection are not easy to purchase, and the operating cost is high; sodium hypochlorite disinfection has raw ma...

AI Technical Summary

Problems solved by technology

[0004] Although the existing technology has introduced the ion membrane electrolysis chlorine production technology into the field of drinking water disinfection technology, the maturity of the process is seriously insufficient, and a series of problems such as the protection of the ion membrane, gas-liquid separation, and chlorine absorption have not been solved, and the current of the equipment during long-term use Efficiency and other performances have dropped a lot, the concentration of residual salt and by-product chlorate in the production of disinfectant is high, and the salt consumption and power consumption of equipment need to be optimized

As we all know, the disinfection equipment of small and medium-sized water supply projects cannot replicate a complete set of complex secondary refining of brine and dechlorination of light brine in the chlor-alkali industry. Bubbles will cause the current efficiency to decrease and the power consumption to increase. It needs to be solved.

Images