Device for treating black and smelly water

Abstract

The present invention is a device for treating black and odorous water bodies, which adopts an integrated skid-mounted design. All equipment is arranged inside the skid, and only inlet and outlet water pipelines are arranged outside the skid. The integrated device is cleverly designed, and ozone ultrasonic electrocatalysis is coupled in a reactor, forming complementary advantages, stronger oxidation performance, and higher organic matter removal efficiency; the water inlet deflector and the water outlet deflector of the present invention utilize the effect of the baffle to further improve the reaction effect, and the vortex water inlet mode adopted plays a synergistic effect, thereby improving the overall purification effect of the entire integrated device; no reagents are added during operation, and no secondary pollution is generated, which can effectively ensure that the treatment of black and odorous water bodies can quickly and effectively meet the standards, and has a relatively broad market application prospect and promotion value.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a device for treating black and smelly water bodies. Background Art

[0002] Black and odorous water bodies are primarily caused by the influx of large amounts of urban sewage, household garbage, and construction waste, which leads to a severe nutrient load on the water bodies. Organic matter, nitrogen, and phosphorus nutrients from riverbed sediments are released back into the water bodies, and without being effectively absorbed, they lead to eutrophication. The main causes of black and odorous water bodies are the following three aspects: first, the influx of organic pollutants into the river; second, sediment contamination and resuspension; and third, the large amount of sediment provides a good habitat for microorganisms. Actinomycetes and cyanobacteria, through their metabolism, cause methanogenesis and denitrification of the sediment, leading to the floating of the sediment and the odor of the water.

[0003] At present, the treatment methods for black and odorous water bodies can be roughly divided into three categories: physical, chemical, and biological. Physical methods mainly include drinking water exchange and sediment dredging, but they are costly, slow to take effect, only treat the symptoms rather than the root cause, and require long-term maintenance. Chemical methods mainly include chemical flocculation, chemical oxidation, and chemical precipitation. Precipitant chemicals are used to remove suspended solids and dissolved nitrogen, phosphorus, and other pollutants in the water. The rapidity and efficiency of chemical treatment technology have shown certain advantages, but they are expensive, the treatment method is limited, and it is easy to cause secondary pollution. The environmental safety issues caused by them need to be discussed. Biological methods are a technical solution that has developed rapidly in recent years. This method mainly uses the metabolic activities of microorganisms or plants to transform and degrade pollutants in water, thereby purifying the water body. This method has good treatment effect, low energy consumption, low operating cost, and will not cause secondary pollution. However, it is slow to take effect, has high requirements for environmental conditions, and conventional biological methods have high maintenance costs. The existing treatment methods are difficult to use a single method to quickly and economically cure black and smelly water bodies due to the diverse causes of black and smelly water bodies, the complex pollutant content and the varying degrees of pollution. Therefore, there is an urgent need to invent a new technology that can solve the existing technical problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for treating black and odorous water bodies to solve the deficiencies in the prior art.

[0005] In order to achieve the above objectives, the following technical solutions are provided:

[0006] A device for treating black and odorous water bodies adopts an integrated skid-mounted design. All equipment is arranged inside the skid, and only inlet and outlet pipelines are arranged outside the skid. The core equipment inside the skid includes: an inlet balancer, an inlet reactor, an inlet baffle, an outlet reactor, an outlet baffle and a power supply. Except for the power supply, the other core equipment inside the skid adopts a tubular design, wherein the inlet balancer, the inlet reactor, the inlet baffle and the outlet reactor have the same pipe diameter and are connected in sequence with flanges to form a whole. The outlet baffle and the outlet reactor have different pipe diameters and are connected to the outlet baffle through flanges to form a whole.

[0007] As a preferred solution, tubular cathode and anode electrodes are arranged inside the water inlet reactor and the water outlet reactor, and baffles are arranged inside the water inlet baffle and the water outlet baffle.

[0008] As a preferred solution, the outer diameter of the water inlet balancer is DN300-1000mm, the length is 6000-12000mm, and 6-10 booster pumps are arranged on one side of the water inlet balancer.

[0009] As a preferred solution, ultrasonic cavitation generators are equidistantly arranged within the external length of the water inlet reactor and the water outlet reactor, an ejector and an ozone baffle reactor are installed between the water inlet reactor and the water inlet balancer, and an ozone baffle is set in the ozone baffle reactor.

[0010] As a preferred solution, a water inlet baffle is arranged inside the water inlet baffle.

[0011] As a preferred solution, a water outlet baffle is provided inside the water outlet baffle, which is divided into two water outlets, and each water outlet has four sections of baffles.

[0012] As a preferred solution, a compressed air back-flushing system is provided in the water inlet reactor, the water inlet baffle, the water outlet reactor and the water outlet baffle, and compressed air blowing is performed regularly.

[0013] As a preferred solution, sieve plates made of insulating material are provided at both ends of the water inlet reactor and the water outlet reactor. The tubular anode and cathode electrodes are spaced and insulated by the sieve plates at both ends. The tubular anode and cathode electrodes are connected to the external power supply connecting wire with a copper plate, and the output end uses an explosion-proof power supply box.

[0014] The beneficial effects of the present invention are:

[0015] 1. The present invention couples ozone ultrasonic electrocatalysis in one reactor, forming a complementary advantage, with stronger oxidation performance and higher organic matter removal efficiency;

[0016] 2. The water inlet and outlet baffles of the present invention utilize the function of baffles to further enhance the reaction effect. The vortex water inlet mode used achieves a synergistic effect, improving the overall purification effect of the entire integrated device.

[0017] 3. The present invention adopts an integrated device with clever design, small footprint, good operating effect, low processing cost, flexible transportation and use, and no chemicals are added during operation, and no secondary pollution is generated. It can effectively ensure that the treatment of black and odorous water bodies can quickly and effectively meet the standards, and has a relatively broad market application prospect and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the water inlet balancer structure;

[0020] Figure 3 Schematic diagram of the water inlet reactor structure;

[0021] The reference numbers shown in the figure are: 1-water inlet balancer, 2-ozone inlet valve, 3-boosting pump, 4-ejector, 5-ozone baffle reactor, 6-water inlet reactor, 7-ultrasonic cavitation generator, 8-water inlet baffle, 9-water outlet reactor, 10-water outlet baffle, 11-balancing cylinder, 12-water intake balancer, 13-water intake sewage pump, 14-tubular anode, 15-tubular cathode, 16-anode connection copper plate, 17-cathode connection copper plate, 18-explosion-proof power box. DETAILED DESCRIPTION

[0022] The following is a detailed description of this design scheme with reference to the accompanying drawings.

[0023] like Figures 1 to 3 As shown, a device for treating black and odorous water bodies adopts an integrated skid-mounted design. All equipment is arranged inside the skid, and only the inlet and outlet pipelines are arranged outside the skid; the core equipment inside the skid includes: an inlet balancer 1, an inlet reactor 6, an inlet baffle 8, an outlet reactor 9, an outlet baffle 10 and a power supply, and except for the power supply, the other core equipment inside the skid adopts a tubular design, among which the inlet balancer 1, the inlet reactor 6, the inlet baffle 8 and the outlet reactor 9 have the same pipe diameter and are connected in sequence with flanges to form a whole. The outlet baffle 10 has a different pipe diameter from the outlet reactor 9 and is connected to the outlet baffle 10 through a flange to form a whole.

[0024] Tubular cathode and anode electrodes are arranged inside the water inlet reactor 6 and the water outlet reactor 9 , and baffles are arranged inside the water inlet baffle 8 and the water outlet baffle 10 .

[0025] Among them, the black and smelly water enters the water inlet balancer 1 in the form of vortex flow, which increases the reaction time of the water inlet cutting machine. The outer pipe diameter of the water inlet balancer 1 is DN300-1000mm, the length is 6000-12000mm, and 6-10 booster pumps 3 are arranged on one side of the water inlet balancer 1 to continuously provide water to the water inlet reactor 6.

[0026] Among them, ultrasonic cavitation generators 7 are equidistantly arranged within the external length range of the water inlet reactor 6 and the water outlet reactor 9, an ejector 4 and an ozone baffle reactor 5 are installed between the water inlet reactor 6 and the water inlet balancer 1, and an ozone baffle plate is set in the ozone baffle reactor 5; ozone comes from an external ozone generator, and ultrasonic, ozone and electro-oxidation coupling reactions are realized in the water inlet reactor 6 through the ultrasonic cavitation generator 7 and the ozone baffle reactor 5, which can efficiently and quickly reduce organic matter and realize organic matter degradation.

[0027] Among them, the water inlet baffle is arranged inside the water inlet baffle 8; after the sewage completes the reaction through the water inlet baffle 8, it enters the water outlet reactor 9 in the form of vortex flow, which increases the reaction time of the water cutter.

[0028] Among them, a water outlet baffle is provided inside the water outlet baffle 10, which is divided into two water outlets, and each water outlet undergoes four sections of baffles.

[0029] The inlet reactor 6, inlet baffle 8, outlet reactor 9, and outlet baffle 10 are all equipped with a compressed air backflush system, which performs compressed air blowback regularly to ensure that no sediment remains in the instrument.

[0030] Among them, sieve plates made of insulating material are set at both ends of the water inlet reactor 6 and the water outlet reactor 9. The tubular anode and cathode electrodes are spaced and insulated by the sieve plates at both ends. The tubular anode and cathode electrodes are connected to the external power supply connecting wire with copper plates, and the output end uses an explosion-proof power supply box; the entire device is equipped with two power supplies: power supply and operating power supply, which is an integrated manual / automatic control.

[0031] The tubular anode electrode 14 is made of a titanium-based metal tube embedded with iridium and cobalt and then calcined, and the electrode diameter is DN10-20mm; the tubular cathode electrode 15 is made of 316L, and the electrode diameter is DN10-20mm.

[0032] The water inlet reactor 6 and the water outlet reactor 9 have the same structure.

[0033] Black and odorous water is pumped into the water balancer 1 by the water intake pump. A booster pump on one side of the water balancer 1 pumps the black and odorous water into the ejector 4 by boosting pressure. Simultaneously, ozone enters the ejector 4 along with the black and odorous water through the ozone inlet valve 2. The ozone-mixed black and odorous water enters the ozone baffle reactor 5, where it undergoes an ozone oxidation reaction before entering the inlet reactor 6. Advanced oxidation reactions occur within the inlet reactor 6, generating a large number of hydroxyl radicals and effectively removing organic matter. The reacted water in the inlet reactor 6, relying on excess water pressure, enters the inlet baffle 8 for further oxidation, further degrading organic matter. Simultaneously, the baffles within the inlet baffle 8 act as a cutting and separating agent, further improving organic matter removal efficiency. The reacted water in the inlet baffle 8, under the excess water pressure, enters the outlet reactor 9, where it continues to undergo advanced oxidation reactions, further removing organic matter. The effluent from the effluent reactor 9 enters the effluent baffle 10 to continue the oxidation reaction. At the same time, the baffles within the effluent baffle 10 cut and separate the effluent, further improving the removal of organic matter. The effluent from the effluent baffle 10 has achieved the desired treatment effect and is returned to the river, completing one treatment cycle.

[0034] Example 1

[0035] Treatment of a black and odorous water body in a certain district of Liaoning: The black and odorous water body was ditch-shaped, 723 meters long, 3.7 meters wide, and with an average depth of 1.8 meters. The water body was black and had a strong odor. The measured COD was 127 mg / L, ammonia nitrogen was 22 mg / L, dissolved oxygen was 1.83 mg / L, ORP was -213 Mv, and transparency was 17 cm. The data showed that the water body was a typical severely black and odorous water body. The device of the present invention was used to treat the black and odorous water body, adopting a circular treatment method, with a daily circulating water volume of 5,000 tons. After 15 days of treatment, the water body was free of black and odor, COD dropped to below 70 mg / L, ammonia nitrogen dropped to below 8 mg / L, dissolved oxygen increased to 3.2 mg / L, transparency was greater than 25 cm, and ORP increased to above 30 Mv. After 30 days of treatment, the black and smelly water was completely eliminated, COD dropped below 30 mg / l, ammonia nitrogen dropped below 2 mg / l, dissolved oxygen increased to 5.8 mg / l, transparency was greater than 50 cm, ORP increased to 87 Mv, and the water body fully met the standards.

[0036] Example 2:

[0037] A black and odorous water body in a certain area of ​​Heilongjiang Province is irregularly circular in shape, approximately 47 meters in diameter, and has an average depth of 2.8 meters. The water is black and has a strong odor. The measured COD is 67 mg / L, ammonia nitrogen is 16 mg / L, dissolved oxygen is 2.13 mg / L, ORP is -176 Mv, and transparency is 19 cm. The data shows that this water body is a typical mildly black and odorous water body. The device of the present invention was used to treat this black and odorous water body, adopting a recycling treatment method, with a daily circulating water volume of 5,000 tons. After 15 days of treatment, the water body was free of black and odor, with COD reduced to below 40 mg / L, ammonia nitrogen to 5.5 mg / L, dissolved oxygen increased to 3.6 mg / L, transparency greater than 25 cm, and ORP increased to above 50 Mv. After 30 days of treatment, the black and smelly water was completely eliminated, COD dropped below 20 mg / l, ammonia nitrogen dropped below 2 mg / l, dissolved oxygen increased to 6.1 mg / l, transparency was greater than 60 cm, ORP increased to 119 Mv, and the water body fully met the standards.

Claims

1. A device for treating black and odorous water bodies, adopting an integrated skid-mounted design, characterized in that: All equipment is installed inside the skid, with only the inlet and outlet pipelines installed outside. The core equipment inside the skid includes an inlet balancer, an inlet reactor, an inlet baffle, an outlet reactor, an outlet baffle, and a power supply. Except for the power supply, all other core equipment inside the skid adopts a tubular design. The inlet balancer, inlet reactor, inlet baffle, and outlet reactor have the same pipe diameter and are connected in sequence with flanges to form a whole. The outlet baffle and the outlet reactor have different pipe diameters and are connected to the outlet baffle via flanges to form a whole. Tubular cathode and anode electrodes are arranged inside the water inlet reactor and the water outlet reactor. The tubular anode electrode is made of a titanium-based metal tube embedded with iridium and cobalt after calcination, and the electrode diameter is DN10-20mm. The tubular cathode is made of 316L and the electrode diameter is DN10-20mm. Both ends of the water inlet reactor and the water outlet reactor are provided with sieve plates made of insulating material. The tubular cathode and anode electrodes are spaced and insulated by the sieve plates at both ends. The tubular cathode and the tubular anode are arranged in a ring shape and the rings are arranged alternately. The tubular cathode and anode electrodes are connected to the external power supply line with a copper busbar, and the output end uses an explosion-proof power supply box. Baffles are arranged inside the water inlet baffle and the water outlet baffle, ultrasonic cavitation generators are arranged at equal distances within the external length of the water inlet reactor and the water outlet reactor, an ejector and an ozone baffle reactor are installed between the water inlet reactor and the water inlet balancer, and an ozone baffle is arranged inside the ozone baffle reactor; A water outlet baffle is provided inside the water outlet baffle, which is divided into two water outlets, and each water outlet has four sections of baffles.

2. The device for treating black and odorous water according to claim 1, characterized in that: The outer pipe diameter of the water inlet balancer is DN300-1000mm, the length is 6000-12000mm, and 6-10 booster pumps are arranged on one side of the water inlet balancer.

3. The device for treating black and odorous water according to claim 1, characterized in that: A water inlet baffle is arranged inside the water inlet baffle.

4. The device for treating black and odorous water according to claim 1, characterized in that: A compressed air back-blowing system is provided in the water inlet reactor, the water inlet baffle, the water outlet reactor and the water outlet baffle, and compressed air blowing is performed regularly.

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