System and method for treating industrial circulating cooling water

Abstract

The invention discloses a system and a method for treating industrial circulating cooling water. The system comprises two or more parallel reaction chambers, wherein electrode plates are respectively arranged in the parallel reaction chambers, and the plurality of reaction chambers are controlled by an automatic control system to carry out electric absorption and desorption regeneration. With the system, the serious waste phenomenon of the industrial circulating cooling water is successfully improved, on the basis of the original cooling circulating system, an electric desalination and absorption device is additionally arranged, so the salinity of the circulating cooling water is lowered, the utilization rate of the circulating water is increased, the concentration ratio of the circulating water is improved, and the cost is saved; the medicine dosage is reduced, so the costs for device operation and wastewater post-treatment are saved; and a device is operated under the condition of low voltage, so the electricity consumption can be saved, and the economic efficiency of an enterprise is improved. Consequently, the system has a very high practical application value.

Description

technical field

[0001] The invention relates to the fields of environmental technology and water treatment technology, in particular to an industrial circulating cooling water treatment system and method based on electric adsorption technology. Background technique

[0002] In the existing industrial circulating cooling water treatment system, the open circulating cooling water system is widely used. Because the open type will bring in a large amount of dust and bacteria, which will cause the problem of microbial corrosion and slime; long-term operation in a relatively high temperature environment, the evaporation of circulating water is large, and fresh water needs to be replenished regularly, which will lead to salt concentration, calcium and magnesium. The concentration of ions increases, which leads to fouling problems in heat transfer pipes. The proliferation of microorganisms and the increase of salt will also lead to increased corrosion of pipeline metal.

[0003] T...

Examples

Embodiment 1

[0061] The number of electrode sheets is 100 pairs, the electrode sheet spacing is 1mm, the electrode sheets are stable, the cooling water flow rate in the reaction tank is 0.6m / min, the voltage is controlled at 2V, and the current density is 0.1A / m 2 , first use a reaction chamber to determine the adsorption and desorption reaction time through the readings of the first conductivity meter and the second conductivity meter. The reaction chamber first performs adsorption, and when the difference between the readings of the second conductivity meter and the reading of the first conductivity meter is less than 40% of the reading of the first conductivity meter, desorption is carried out. The adsorption time and desorption time are close to 3:1, It is about 75min and 25min respectively. According to the ratio of adsorption and desorption time, this reaction tank needs to set up four reaction chambers. After the first reaction chamber starts to work for 25 minutes, open the second r...

Embodiment 2

[0068] The number of electrode sheets is 100 pairs, the distance between the electrode sheets is 1.5mm, the properties of the electrode sheets are stable, the cooling water flow rate in the reaction tank is 0.5m / min, the voltage is controlled at 2V, and the current density is 0.1A / m 2 , first use a reaction chamber to determine the adsorption and desorption reaction time through the readings of the conductivity meter. The reaction chamber first performs adsorption, and when the difference between the reading of the second conductivity meter and the reading of the first conductivity meter is less than 50%, desorption is carried out. The adsorption time and desorption time are close to 4:1, which are about 80 minutes and 20 minutes respectively. According to the ratio of adsorption and desorption time, the reaction tank needs to be equipped with five reaction chambers. When the first reaction chamber starts to work for 20 minutes, the second reaction chamber is opened for adsorpt...

technical field

[0001] The invention relates to the fields of environmental technology and water treatment technology, in particular to an industrial circulating cooling water treatment system and method based on electric adsorption technology. Background technique

[0002] In the existing industrial circulating cooling water treatment system, the open circulating cooling water system is widely used. Because the open type will bring in a large amount of dust and bacteria, which will cause the problem of microbial corrosion and slime; long-term operation in a relatively high temperature environment, the evaporation of circulating water is large, and fresh water needs to be replenished regularly, which will lead to salt concentration, calcium and magnesium. The concentration of ions increases, which leads to fouling problems in heat transfer pipes. The proliferation of microorganisms and the increase of salt will also lead to increased corrosion of pipeline metal.

[0003] T...

Examples

Embodiment 1

[0061] The number of electrode sheets is 100 pairs, the electrode sheet spacing is 1mm, the electrode sheets are stable, the cooling water flow rate in the reaction tank is 0.6m / min, the voltage is controlled at 2V, and the current density is 0.1A / m 2 , first use a reaction chamber to determine the adsorption and desorption reaction time through the readings of the first conductivity meter and the second conductivity meter. The reaction chamber first performs adsorption, and when the difference between the readings of the second conductivity meter and the reading of the first conductivity meter is less than 40% of the reading of the first conductivity meter, desorption is carried out. The adsorption time and desorption time are close to 3:1, It is about 75min and 25min respectively. According to the ratio of adsorption and desorption time, this reaction tank needs to set up four reaction chambers. After the first reaction chamber starts to work for 25 minutes, open the second r...

Embodiment 2

[0068] The number of electrode sheets is 100 pairs, the distance between the electrode sheets is 1.5mm, the properties of the electrode sheets are stable, the cooling water flow rate in the reaction tank is 0.5m / min, the voltage is controlled at 2V, and the current density is 0.1A / m 2 , first use a reaction chamber to determine the adsorption and desorption reaction time through the readings of the conductivity meter. The reaction chamber first performs adsorption, and when the difference between the reading of the second conductivity meter and the reading of the first conductivity meter is less than 50%, desorption is carried out. The adsorption time and desorption time are close to 4:1, which are about 80 minutes and 20 minutes respectively. According to the ratio of adsorption and desorption time, the reaction tank needs to be equipped with five reaction chambers. When the first reaction chamber starts to work for 20 minutes, the second reaction chamber is opened for adsorpt...

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