Hardness removal and softening device for preventing COD (Chemical Oxygen Demand) pollution

Abstract

The utility model discloses a COD (Chemical Oxygen Demand) pollution preventing, hardness removing and softening device, which relates to the field of softened water treatment equipment and comprises a tank body, a first cavity and a second cavity are arranged in the tank body, the first cavity is positioned on the upper side of the second cavity, an outlet of the first cavity is connected with an inlet of the second cavity through a first valve, an activated carbon adsorption layer is arranged in the first cavity, and a second valve is arranged in the second cavity. A first water distributor and a second water distributor are respectively arranged on the first cavity on the upper side and the lower side of the activated carbon adsorption layer, a softening resin layer is arranged in the second cavity, and a third water distributor and a fourth water distributor are respectively arranged on the second cavity on the upper side and the lower side of the softening resin layer. The device can remove organic matters and available chlorine in a water body, prevent the organic matters from polluting and damaging softened resin and prevent the available chlorine from poisoning and losing efficacy on the softened resin, so that the softened resin is protected, and the service life of the softened resin is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of water softening equipment, and in particular to a water softening device for preventing COD pollution and removing hardness. Background Technology

[0002] Promote the conservation and utilization of water resources, encourage key industries to increase the utilization of unconventional waters such as municipal sewage and reclaimed water, seawater, rainwater, and mine water, reduce the amount of fresh water taken out, increase the recycling of wastewater, and promote the integrated recycling and reuse of oil refining wastewater, the joint recycling and reuse of steel wastewater and municipal sewage, the deep treatment of coking wastewater by electromagnetic strong oxidation, the deep treatment and reuse of coal chemical concentrated salt wastewater, the deep treatment and reuse of textile printing and dyeing wastewater, and the biological treatment and reuse of food fermentation organic wastewater.

[0003] Slightly polluted water bodies and industrial wastewater contain organic matter and have a certain degree of hardness. When treating such water containing organic matter, although various organic matter removal processes are employed, some organic matter remains difficult to remove completely, especially after membrane concentration, where the concentration increases further. This organic matter can cause organic pollution and irreversible damage to the softening resin during subsequent water softening treatment. Furthermore, the available chlorine added during water treatment disinfection can also cause resin poisoning and inactivation. Utility Model Content

[0004] The purpose of this invention is to provide a COD pollution prevention and water softening device that can remove organic matter and available chlorine from water, preventing organic matter from polluting and damaging the softening resin, and preventing available chlorine from poisoning and degrading the softening resin, thereby protecting the softening resin and extending its service life.

[0005] To achieve the above and other related objectives, this utility model provides a COD pollution prevention and hardening softening device, comprising: a tank body, wherein the tank body is provided with a first cavity and a second cavity, the first cavity being located above the second cavity, the outlet of the first cavity and the inlet of the second cavity being connected by a first valve, the top of the tank body being provided with a feed inlet and a first backwash drain outlet, the side wall of the tank body being provided with a first backwash inlet, a first cavity outlet, a second backwash drain outlet and a second cavity inlet sequentially from top to bottom, the first backwash inlet and the first cavity outlet being located at the bottom of the first cavity, the second backwash drain outlet and the second cavity inlet being located at the top of the second cavity, the bottom of the tank body being provided with a second backwash inlet, a discharge outlet and several support legs, the discharge outlet being connected to a discharge pipe and a second forward wash drain pipe respectively;

[0006] The first cavity is provided with an activated carbon adsorption layer. A first water distributor and a second water distributor are respectively provided on the first cavity on the upper and lower sides of the activated carbon adsorption layer. The inlet of the first water distributor is connected to the feed inlet, and the inlet of the second water distributor is connected to the first backwash water inlet. The outlets of the first water distributor and the second water distributor are both facing the activated carbon adsorption layer.

[0007] The second cavity is provided with a softening resin layer. A third water distributor and a fourth water distributor are respectively provided on the upper and lower sides of the second cavity. The inlet of the third water distributor is connected to the water inlet of the second cavity, and the inlet of the fourth water distributor is connected to the second backwash water inlet. The outlets of the third water distributor and the fourth water distributor both face the softening resin layer.

[0008] In one example of a COD pollution prevention and hardening softening device of this utility model, the first valve is a solenoid valve.

[0009] In one example of a COD pollution prevention and hardening softening device of this utility model, a second valve is provided on the discharge pipe, and a third valve is provided on the second forward wash drain pipe.

[0010] In one example of a COD pollution prevention and hardening softening device of this utility model, both the second valve and the third valve are solenoid valves.

[0011] In one example of the COD pollution prevention and hardening softening device of this utility model, the activated carbon adsorption layer is located in the middle of the first cavity.

[0012] In one example of the COD pollution prevention and hardening softening device of this utility model, the height of the activated carbon adsorption layer is 0.4 to 0.6 times the height of the first cavity.

[0013] In one example of the COD pollution prevention and hardening softening device of this utility model, the softening resin layer is located in the middle of the second cavity.

[0014] In one example of the COD pollution prevention and hardening softening device of this utility model, the height of the softening resin layer is 0.5 to 0.7 times the height of the second cavity.

[0015] In one example of a COD pollution prevention and hardening softening device of this utility model, the second water distributor includes a horizontal pipe, a vertical pipe and several branch pipes. One end of the horizontal pipe is connected to the first backwash inlet, the other end of the horizontal pipe is perpendicularly connected to one end of the vertical pipe, and the other end of the vertical pipe is connected to one end of several branch pipes respectively. Several nozzles are provided at the ends of the several branch pipes away from the horizontal pipe.

[0016] In one example of the COD pollution prevention and hardening softening device of this utility model, a plurality of branch pipes are evenly distributed at the end of the riser, and a plurality of nozzles are evenly distributed on the branch pipes.

[0017] This invention relates to a COD pollution prevention and water softening device. It utilizes an activated carbon adsorption layer within the first chamber to filter and adsorb water entering the tank. Organic matter, color, and available chlorine in the water can all be adsorbed by the activated carbon adsorption layer, thus preventing these substances from contaminating and damaging the softening resin. The filtered and adsorbed water then enters the second chamber, where it is softened by the softening resin layer, removing hardness ions and completing the water softening process. The first and second chambers can be separated by a first valve, allowing for independent backwashing, forward washing, and regeneration solution replacement operations. This invention offers high softening efficiency and a long service life for the softening resin. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the COD pollution prevention and hardening / softening device of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the COD pollution prevention and hardening / softening device of this utility model;

[0020] Figure 3 This is a front view of the second water distributor in one embodiment of the COD pollution prevention and hardening softening device of this utility model;

[0021] Figure 4 This is a top view of the second water distributor in one embodiment of the COD pollution prevention and hardening softening device of this utility model.

[0022] Component designation:

[0023] 100. Tank body; 110. Feed inlet; 120. First backwash drain outlet; 130. First backwash inlet; 140. First chamber outlet; 150. Second backwash drain outlet; 160. Second chamber inlet; 170. Second backwash inlet; 180. Discharge outlet; 190. Support leg; 200. First chamber; 210. Activated carbon adsorption layer; 220. First water distributor; 230. Second water distributor; 231. Horizontal pipe; 232. Vertical pipe; 233. Branch pipe; 234. Nozzle; 300. Second chamber; 310. Softening resin layer; 320. Third water distributor; 330. Fourth water distributor; 400. Discharge pipe; 410. Second valve; 500. Second forward wash drain pipe; 510. Third valve; 600. First valve. Detailed Implementation

[0024] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. It should also be understood that the terminology used in the embodiments of this utility model is for describing specific implementation schemes and not for limiting the scope of protection of this utility model. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0025] When numerical ranges are given in the embodiments, it should be understood that, unless otherwise stated in this invention, both endpoints of each numerical range and any value between the two endpoints may be selected. Unless otherwise defined, all technical and scientific terms used in this invention, as well as the prior art known to those skilled in the art and the description of this invention, may be implemented using any prior art methods, equipment, and materials similar to or equivalent to those in the embodiments of this invention.

[0026] Please see Figure 1 and Figure 2 This utility model provides a COD pollution prevention and hardening softening device, which includes: a tank 100, wherein the tank 100 is provided with a first cavity 200 and a second cavity 300, the first cavity 200 is located above the second cavity 300, the outlet of the first cavity 200 and the inlet of the second cavity 300 are connected by a first valve 600, the top of the tank 100 is provided with an inlet 110 and a first backwash drain 120, and the side wall of the tank 100 is provided with a first backwash water inlet 130, a first backwash water inlet 130, a second backwash water inlet 120, and a third backwash water inlet 130, a fourth backwash water inlet 140, and a fifth backwash water inlet 150, a sixth backwash water inlet 160, and a seventh backwash water inlet 120, a sixth backwash water inlet 130, and a seventh backwash water inlet 140, a sixth backwash water inlet 150, and a sixth backwash water inlet 160, a sixth backwash water inlet 170, and a sixth backwash water inlet 120, a sixth backwash water inlet 130, and a sixth backwash water inlet 140, a sixth backwash water inlet 15 ... a sixth backwash water inlet 160, and a sixth backwash water inlet 120, a sixth backwash water inlet 130, and a sixth backwash water inlet 140, a sixth back The tank 200 has a first chamber outlet 140, a second backwash drain outlet 150, and a second chamber inlet 160. The first backwash inlet 130 and the first chamber outlet 140 are located at the bottom of the first chamber 200, and the second backwash drain outlet 150 and the second chamber inlet 160 are located at the top of the second chamber 300. The bottom of the tank 100 is provided with a second backwash inlet 170, a discharge outlet 180, and several support legs 190. The discharge outlet 180 is connected to the discharge pipe 400 and the second forward wash drain pipe 500, respectively.

[0027] The first cavity 200 is provided with an activated carbon adsorption layer 210. A first water distributor 220 and a second water distributor 230 are respectively provided on the upper and lower sides of the first cavity 200 of the activated carbon adsorption layer 210. The inlet of the first water distributor 220 is connected to the feed inlet 110, and the inlet of the second water distributor 230 is connected to the first backwash water inlet 130. The outlets of the first water distributor 220 and the second water distributor 230 are both facing the activated carbon adsorption layer 210.

[0028] The second cavity 300 is provided with a softening resin layer 310. A third water distributor 320 and a fourth water distributor 330 are respectively provided on the upper and lower sides of the second cavity 300 of the softening resin layer 310. The inlet of the third water distributor 320 is connected to the water inlet 160 of the second cavity, and the inlet of the fourth water distributor 330 is connected to the second backwash water inlet 170. The outlets of the third water distributor 320 and the fourth water distributor 330 are both facing the softening resin layer 310.

[0029] The tank 100 of this invention is placed on a flat ground or base, and several support legs 190 are used to support and fix the tank 100. Water to be treated enters through the inlet 110 and is then evenly distributed onto the activated carbon adsorption layer 210 via the first water distributor 220. The activated carbon in the activated carbon adsorption layer 210 adsorbs organic matter, color, and available chlorine from the water. The filtered water then enters the second chamber 300 through the outlet of the first chamber 200 and the first valve 600, where it undergoes ion exchange with the softening resin in the softening resin layer 310, thereby removing hardness ions and completing the water softening process. The softened water enters the discharge pipe 400 through the outlet 180 and is then discharged to the next process.

[0030] During backwashing, the first valve 600 is first closed to separate the first chamber 200 from the second chamber 300, allowing for independent backwashing. When backwashing the activated carbon adsorption layer 210, water enters through the first backwash inlet 130 and is evenly sprayed onto the surface of the activated carbon adsorption layer 210 via the second water distributor 230, backwashing the activated carbon adsorption layer 210. The rinsed water is discharged through the first backwash outlet 120. When backwashing the softening resin layer 310, water enters through the second backwash inlet 170 and is evenly sprayed onto the surface of the softening resin layer 310 via the fourth water distributor 330, backwashing the softening resin layer 310. The rinsed water is discharged through the second backwash outlet 150. During the regeneration and replacement of the softening resin layer 310, the regenerating liquid enters from the second chamber inlet 160 and is evenly sprayed onto the surface of the softening resin layer 310 by the third water distributor 320, where it regenerates and replaces the softening resin. The regenerating liquid that has completed the replacement is discharged from the outlet 180 into the second forward wash drain pipe 500. Then, water enters from the second chamber inlet 160 and is evenly sprayed onto the surface of the softening resin layer 310 by the third water distributor 320 to perform a forward wash on the softening resin layer 310. The water after the forward wash is discharged from the outlet 180 into the second forward wash drain pipe 500.

[0031] Please see Figure 2 In one example of a COD pollution prevention and hardening softening device of this utility model, the first valve 600 is a solenoid valve. A second valve 410 is provided on the discharge pipe 400, and a third valve 510 is provided on the second forward wash drain pipe 500. Both the second valve 410 and the third valve 510 are solenoid valves.

[0032] Please see Figure 2 In one example of the COD pollution prevention and hardening softening device of this utility model, the activated carbon adsorption layer 210 is located in the middle of the first cavity 200. The height of the activated carbon adsorption layer 210 is 0.4 to 0.6 times the height of the first cavity 200. The softening resin layer 310 is located in the middle of the second cavity 300. The height of the softening resin layer 310 is 0.5 to 0.7 times the height of the second cavity 300.

[0033] Please see Figures 2 to 4In one example of a COD pollution prevention and hardening softening device of this utility model, the second water distributor 230 includes a horizontal pipe 231, a vertical pipe 232, and several branch pipes 233. One end of the horizontal pipe 231 is connected to the first backwash inlet 130, and the other end of the horizontal pipe 231 is perpendicularly connected to one end of the vertical pipe 232. The other end of the vertical pipe 232 is connected to one end of each of the several branch pipes 233. Several nozzles 234 are provided at the ends of the branch pipes 233 away from the horizontal pipe 231. The several branch pipes 233 are evenly distributed at the ends of the vertical pipe 232, and the several nozzles 234 are evenly distributed on the branch pipes 233. The structures of the third water distributor 320 and the fourth water distributor 330 are the same as those of the second water distributor 230, and will not be described in detail here.

[0034] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A COD pollution prevention and hardening / softening device, characterized in that, include: The tank body includes a first cavity and a second cavity. The first cavity is located above the second cavity. The outlet of the first cavity and the inlet of the second cavity are connected by a first valve. The top of the tank body has a feed inlet and a first backwash drain outlet. The side wall of the tank body has, from top to bottom, a first backwash inlet, a first cavity outlet, a second backwash drain outlet, and a second cavity inlet. The first backwash inlet and the first cavity outlet are located at the bottom of the first cavity, and the second backwash drain outlet and the second cavity inlet are located at the top of the second cavity. The bottom of the tank body has a second backwash inlet, a discharge outlet, and several support legs. The discharge outlet is connected to a discharge pipe and a second forward wash drain pipe, respectively. The first cavity is provided with an activated carbon adsorption layer. A first water distributor and a second water distributor are respectively provided on the first cavity on the upper and lower sides of the activated carbon adsorption layer. The inlet of the first water distributor is connected to the feed inlet, and the inlet of the second water distributor is connected to the first backwash water inlet. The outlets of the first water distributor and the second water distributor are both facing the activated carbon adsorption layer. The second cavity is provided with a softening resin layer. A third water distributor and a fourth water distributor are respectively provided on the upper and lower sides of the second cavity. The inlet of the third water distributor is connected to the water inlet of the second cavity, and the inlet of the fourth water distributor is connected to the second backwash water inlet. The outlets of the third water distributor and the fourth water distributor both face the softening resin layer.

2. The COD pollution prevention and hardening softening device as described in claim 1, characterized in that, The first valve is a solenoid valve.

3. The COD pollution prevention and hardening softening device as described in claim 1, characterized in that, The discharge pipe is equipped with a second valve, and the second forward wash drain pipe is equipped with a third valve.

4. The COD pollution prevention and hardening softening device as described in claim 3, characterized in that, Both the second valve and the third valve are solenoid valves.

5. The COD pollution prevention and hardening softening device as described in claim 1, characterized in that, The activated carbon adsorption layer is located in the middle of the first cavity.

6. The COD pollution prevention and hardening softening device as described in claim 5, characterized in that, The height of the activated carbon adsorption layer is 0.4 to 0.6 times the height of the first cavity.

7. The COD pollution prevention and hardening softening device as described in claim 1, characterized in that, The softening resin layer is located in the middle of the second cavity.

8. The COD pollution prevention and hardening softening device as described in claim 7, characterized in that, The height of the softening resin layer is 0.5 to 0.7 times the height of the second cavity.

9. The COD pollution prevention and hardening softening device as described in claim 1, characterized in that, The second water distributor includes a horizontal pipe, a vertical pipe, and several branch pipes. One end of the horizontal pipe is connected to the first backwash inlet, and the other end of the horizontal pipe is perpendicularly connected to one end of the vertical pipe. The other end of the vertical pipe is connected to one end of several branch pipes, and several nozzles are provided at the ends of the branch pipes away from the horizontal pipe.

10. The COD pollution prevention and hardening softening device as described in claim 9, characterized in that, Several branch pipes are evenly distributed at the ends of the riser, and several nozzles are evenly distributed on the branch pipes.

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