A turbid circulating water quality treatment system suitable for non-ferrous metal processing

Abstract

The utility model provides a kind of turbid circulating water quality treatment system suitable for non-ferrous metal processing, it is related to non-ferrous metal processing technical field, mainly for solving the problems such as the need to supplement a part of purified water of existing turbid circulating water quality treatment system, higher operating cost etc..The processing system includes cold water pool, self-cleaning filter, turbid circulating water supply pipe network, non-ferrous metal production line, turbid circulating backwater pipe network, oil separation sedimentation tank, hot water pool, cooling tower, cold water pool, further include electrochemical descaling device for purifying water quality.Because electrochemical descaling device has the effect of descaling, reducing salinity and hardness in water, the processing system can produce softened water to improve water quality, not only save water resources, but also improve the purification effect of turbid circulating water.Furthermore, electrochemical descaling device has the effect of sterilization and algae removal, reducing corrosivity, so the dosage of bactericide and neutralizing agent is greatly reduced, and the operating cost of water treatment is also reduced.

Description

Technical Field

[0001] This utility model is specifically a turbid circulating water treatment system suitable for non-ferrous metal processing, and relates to the field of non-ferrous metal processing technology. Background Technology

[0002] In the non-ferrous metals processing industry, turbid circulating water treatment systems are crucial auxiliary systems that ensure equipment cooling, process lubrication, and product quenching. The pollutants in turbid circulating water are mainly metal ions, grease, and high levels of suspended solids. Grease can breed microorganisms, while metal ions easily form scale and cause equipment corrosion.

[0003] See attached document Figure 1 The existing turbid circulating water treatment system mainly consists of a cold water tank, a self-cleaning filter, a turbid circulating water supply network, a non-ferrous metal production line, a turbid circulating water return network, an oil-water separator and sedimentation tank, a hot water tank, a cooling tower, and a cold water tank. According to process requirements, a portion of tap water or purified water (deionized water) needs to be added to the cold water tank to improve water quality. To conserve water resources, patent CN219264682U discloses a water-saving turbid circulating water system for an aluminum processing plant. This patent uses a closed-loop cooling tower instead of an open-loop cooling tower, reducing the amount of water needed for replenishment. Although this turbid circulating water system reduces the amount of water needed for replenishment, it does not reduce the concentration of ions such as calcium, magnesium, aluminum, and copper. The salinity and hardness of the water remain high, failing to meet the requirements for recycling. Therefore, a portion of more expensive purified water still needs to be added.

[0004] In addition, the existing turbid circulating water treatment system only has one tower cooling to cool the turbid circulating water. In the high temperature of summer, the water temperature cannot be reduced to below 35°C, and ice or cold water needs to be added to lower the water temperature, which increases the operating cost of water treatment. Utility Model Content

[0005] To overcome the shortcomings of the prior art, this utility model discloses a turbid circulating water treatment system suitable for non-ferrous metal processing, as follows:

[0006] A turbid circulating water treatment system suitable for non-ferrous metal processing includes a cold water tank, a self-cleaning filter, a turbid circulating water supply network, a non-ferrous metal production line, a turbid circulating return water network, an oil-water separator and sedimentation tank, a hot water tank, a cooling tower, and a cold water tank. It also includes an electrochemical descaling device for purifying the water.

[0007] Further improve the technical solution: The electrochemical descaling device is connected to the cold water tank, and part of the turbid circulating water in the cold water tank is purified by the electrochemical descaling device and then returned to the cold water tank.

[0008] Further improve the technical solution: The electrochemical descaling device is connected to the self-cleaning filter and the cold water tank. Some of the turbid circulating water filtered by the self-cleaning filter is purified by the electrochemical descaling device and then returned to the cold water tank.

[0009] Further improvements to the technical solution: The cold water pool includes a primary cold water pool and a secondary cold water pool, and the cooling tower includes a primary cooling tower and a secondary cooling tower. The outlet of the hot water pool is connected to the inlet of the primary cooling tower, the outlet of the primary cooling tower is connected to the inlet of the primary cold water pool, the outlet of the primary cold water pool is connected to the inlet of the secondary cooling tower, the outlet of the secondary cooling tower is connected to the inlet of the secondary cold water pool, and the outlet of the secondary cold water pool is connected to the inlet of the self-cleaning filter.

[0010] Further improvements to the technical solution include an air flotation device connected to the hot water tank, through which some of the turbid circulating water in the hot water tank is treated and then returned to the hot water tank.

[0011] After implementing the above technical solution, the beneficial effects of this utility model compared to the prior art are:

[0012] This invention adds an electrochemical descaling device to an existing turbid circulating water treatment system. Because the electrochemical descaling device removes scale and reduces salinity and hardness in the water, this turbid circulating water treatment system can produce its own softened water to improve water quality, eliminating the need for external replenishment. This not only saves water resources but also improves the purification effect on the turbid circulating water. Furthermore, since the electrochemical descaling device also sterilizes, kills algae, and reduces corrosiveness, it significantly reduces the dosage of bactericides and neutralizers, as well as the operating costs of the water treatment system.

[0013] In addition, this turbid circulating water treatment system is equipped with two-stage cold water pools and two-stage cooling towers, which greatly increases the cooling capacity of the turbid circulating water and further reduces the operating cost of water treatment. Attached Figure Description

[0014] Appendix Figure 1 The diagram shows the composition of an existing turbidity circulating water treatment system.

[0015] Appendix Figure 2 The diagram shown is a composition diagram of the turbidity circulating water treatment system in Example 1.

[0016] Appendix Figure 3 The diagram shown is a composition diagram of the turbidity circulating water treatment system in Example 2.

[0017] Appendix Figure 4 The diagram shown is a composition diagram of the turbidity circulating water treatment system in Example 3. Detailed Implementation

[0018] The preferred embodiments of this utility model are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of this utility model and are not intended to limit the scope of protection of this utility model. It should be noted that in the description of this utility model, terms such as "front," "rear," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is merely for ease of description and does not indicate or imply that the device or element must have a specific orientation and positional relationship, and therefore should not be construed as a limitation of this utility model. It should also be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] A turbid circulating water treatment system suitable for non-ferrous metal processing is disclosed, relating to the field of non-ferrous metal processing technology. It is mainly used to solve the problems of existing turbid circulating water treatment systems requiring the addition of some purified water and having high operating costs.

[0020] Example 1: Refer to Appendix Figure 2 This turbid circulating water treatment system mainly consists of a cold water tank, a self-cleaning filter, a turbid circulating water supply network, a non-ferrous metal production line, a turbid circulating water return network, an oil-water separator and sedimentation tank, a hot water tank, a cooling tower, and a cold water tank. In order to reduce the salinity and hardness of the turbid circulating water, this turbid circulating water treatment system is also equipped with an electrochemical descaling device for purifying the water.

[0021] Electrochemical descaling is a process that utilizes electrochemical principles to actively remove scale-forming ions (Ca²⁺, Mg²⁺, Cu²⁺, Al²⁺) from circulating water. 3 (⁺) and physical water treatment technologies that inhibit scale formation. For turbid circulating water generated during non-ferrous metal processing, the overall water quality is acidic, with high levels of microorganisms, salinity, and hardness. Under the action of direct current, an oxidation reaction occurs at the anode, producing strong oxidizing substances such as O3, H2O2, and HClO, which have bactericidal and algae-killing effects and reduce corrosive substances in the water; a reduction reaction occurs at the cathode, producing OH-... - With Ca²⁺, Mg²⁺, Cu²⁺, Al 3 ⁺ The combination forms a precipitate, which can remove scale, reduce acidity, salinity, and hardness. Electrochemical descaling is an existing technology, and its biggest advantage is that it does not require the addition of chemical agents, making it environmentally friendly, energy-saving, and easy to maintain.

[0022] Theoretically, this turbid circulating water treatment system can purify water by connecting an electrochemical descaling device at any location, but connecting it to the cold water tank offers more advantages. In this embodiment, the electrochemical descaling device is connected to the cold water tank, and a portion of the turbid circulating water in the cold water tank is purified by the electrochemical descaling device and then returned to the cold water tank. Because the electrochemical descaling device removes scale and reduces salinity and hardness in the water, this turbid circulating water treatment system can produce its own softened water to improve water quality, eliminating the need for external softening water replenishment. This not only saves water resources but also improves the purification effect on the turbid circulating water. Furthermore, since the electrochemical descaling device also sterilizes, kills algae, and reduces corrosivity, the dosage of bactericides and neutralizers is reduced, lowering the operating costs of the water treatment system.

[0023] Example 2: Refer to Appendix Figure 3 The difference between this embodiment and embodiment 1 is that the electrochemical descaling device is connected to the self-cleaning filter and the cold water tank. Some of the turbid circulating water filtered by the self-cleaning filter is purified by the electrochemical descaling device and then returned to the cold water tank.

[0024] Clearly, this connection method also helps reduce the salinity and hardness of the circulating turbid water. Compared to Example 1, since the sediment is filtered out by the self-cleaning filter, the descaling maintenance burden on the cathode of the electrochemical descaling device can be reduced.

[0025] Example 3: Refer to Appendix Figure 4 The difference between this embodiment and Embodiment 1 is that the cold water pool includes a primary cold water pool and a secondary cold water pool, and the cooling tower includes a primary cooling tower and a secondary cooling tower. The outlet of the hot water pool is connected to the inlet of the primary cooling tower, the outlet of the primary cooling tower is connected to the inlet of the primary cold water pool, the outlet of the primary cold water pool is connected to the inlet of the secondary cooling tower, the outlet of the secondary cooling tower is connected to the inlet of the secondary cold water pool, and the outlet of the secondary cold water pool is connected to the inlet of the self-cleaning filter.

[0026] Because this turbid circulating water treatment system is equipped with two-stage cold water tanks and two-stage cooling towers, it can significantly increase the cooling capacity of the circulating water. Even in high summer temperatures, it can reduce the water temperature from above 65°C to below 35°C. Since there is no longer a need to add ice to lower the water temperature, the operating costs of the water treatment system are further reduced.

[0027] In addition, this turbid circulating water treatment system is equipped with an air flotation device connected to the hot water tank. A portion of the turbid circulating water in the hot water tank is treated by the air flotation device and then returned to the hot water tank. The air flotation device is also existing technology; its function is to remove grease and high suspended solids from the turbid circulating water by releasing micro-nano bubbles, further purifying the water quality.

[0028] It is worth noting that the content not described in detail in the above embodiments is prior art. It is also worth noting that any additions, subtractions, substitutions, and improvements made by those skilled in the art based on the structure and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A turbid circulating water treatment system suitable for non-ferrous metal processing, comprising a cold water tank, a self-cleaning filter, a turbid circulating water supply network, a non-ferrous metal production line, a turbid circulating return water network, an oil-water separator and sedimentation tank, a hot water tank, a cooling tower, and a cold water tank, characterized in that: It also includes electrochemical descaling devices for purifying water.

2. The turbid circulating water treatment system for non-ferrous metal processing as described in claim 1, characterized in that: The electrochemical descaling device is connected to the cold water tank, and some of the turbid circulating water in the cold water tank is purified by the electrochemical descaling device and then returned to the cold water tank.

3. The turbid circulating water treatment system for non-ferrous metal processing as described in claim 1, characterized in that: The electrochemical descaling device is connected to the self-cleaning filter and the cold water tank. Some of the turbid circulating water filtered by the self-cleaning filter is purified by the electrochemical descaling device and then returned to the cold water tank.

4. A turbid circulating water treatment system suitable for non-ferrous metal processing as described in claim 1, 2, or 3, characterized in that: The cold water pool includes a primary cold water pool and a secondary cold water pool, and the cooling tower includes a primary cooling tower and a secondary cooling tower. The outlet of the hot water pool is connected to the inlet of the primary cooling tower, the outlet of the primary cooling tower is connected to the inlet of the primary cold water pool, the outlet of the primary cold water pool is connected to the inlet of the secondary cooling tower, the outlet of the secondary cooling tower is connected to the inlet of the secondary cold water pool, and the outlet of the secondary cold water pool is connected to the inlet of the self-cleaning filter.

5. A turbid circulating water treatment system suitable for non-ferrous metal processing as described in claim 1, characterized in that: It also includes an air flotation device connected to the hot water tank, through which some of the turbid circulating water in the hot water tank is treated and returned to the hot water tank.

Images