Small movable deep denitrification device

Abstract

The utility model relates to a small movable deep denitrification device, which belongs to the technical field of water treatment and is characterized in that a water inlet is arranged at the upper end of a quick-acting denitrification tank, a water outlet is arranged at the lower end of the quick-acting denitrification tank, and a filter plate layer is arranged at the lower end in the quick-acting denitrification tank; the water inlet and outlet system comprises a water inlet lifting pump, a water inlet pipe and a water outlet pipe, the lifting pump is connected with the water inlet through the water inlet pipe, and the water outlet pipe is connected with the water outlet; the backwashing system comprises a backwashing pump, a backwashing water inlet pipe and a backwashing water outlet pipe, the backwashing pump is connected with the water outlet through the backwashing water inlet pipe, and the backwashing water outlet pipe is connected with the water inlet; the nitrate detector is arranged on the quick-acting denitrification tank; the resin replacing system comprises a resin supplementing pipe, a resin discharging pipe and denitrification resin. The device is simple and efficient, the total nitrogen removal efficiency and stability are higher than those of a biological method, a movable structural style is adopted, the sewage unit operation efficiency is improved, and the device is suitable for emergency treatment when the effluent quality of a sewage plant deteriorates.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a small movable deep denitrification device. Background Art

[0002] At present, small-scale sewage treatment facilities are generally not designed to remove total nitrogen separately. Conventional processes rely on the aerobic-anoxic process of the biochemical section for removal. Even if the back-end involves deep denitrification treatment, biological methods are often used. The biggest problem is that the biological method for removing total nitrogen does not have the ability to resist shock loads and is greatly affected by environmental factors, and cannot stably ensure that the total nitrogen meets the standard. However, after designing and matching processes for the total nitrogen indicator alone, when the influent water quality is good and the temperature is suitable, the original process can also achieve good results in removing total nitrogen. At this time, it will result in large investment and uneconomical operation.

[0003] Therefore, it is necessary to design a small-scale mobile deep denitrification device to overcome the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a small-scale mobile deep denitrification device, which is simple and efficient, with a higher total nitrogen removal efficiency and stability than the biological method, and adopts a mobile equipment structure style to improve the operating efficiency of the sewage unit; it has good treatment effect, low investment, small footprint, low operating cost, simple operation, fast activation, stable operation, and strong applicability, and is suitable for emergency treatment when the effluent quality of the sewage plant deteriorates.

[0005] The utility model provides a small-sized mobile deep denitrification device, comprising: an inlet and outlet water system, a quick-acting denitrification tank, a backwashing system, a nitrate detector, and a resin replacement system;

[0006] A water inlet is provided at the upper end of the fast-acting denitrification tank and a water outlet is provided at the lower end thereof, a filter plate layer is provided at the lower end inside the fast-acting denitrification tank and is located above the water outlet; the water inlet and outlet systems include an inlet lift pump, an inlet pipe and an outlet pipe, the lift pump is connected to the water inlet through the inlet pipe, and the outlet pipe is connected to the water outlet; the backwash system includes a backwash pump, a backwash inlet pipe and a backwash outlet pipe, the backwash pump is connected to the water outlet through the backwash inlet pipe, and the backwash outlet pipe is connected to the water inlet; a nitrate detector is provided on the fast-acting denitrification tank for detecting the total nitrogen content at the water outlet; the resin replacement system includes a resin replenishing pipe, a resin discharge pipe and a denitrification resin, the fast-acting denitrification tank is filled with denitrification resin and is provided on the filter plate layer, the resin replenishing pipe and the resin discharge pipe are both connected to the fast-acting denitrification tank, corresponding to the upper and lower ends of the area filled with the denitrification resin respectively.

[0007] Furthermore, it includes a plurality of quick-acting denitrification tanks arranged in parallel.

[0008] Furthermore, an automatic water inlet valve is provided on the water inlet pipe, and an automatic water outlet valve is provided on the water outlet pipe.

[0009] Furthermore, the filter plate layer includes a filter plate and a short-handled filter head. The short-handled filter head is made of ABS material. The filter ends are evenly arranged on the filter plate, and the short-handled straight tube end extends downward from the filter plate.

[0010] Furthermore, the quick-acting denitrification tank is provided with an observation mirror and an inspection manhole, both of which are arranged corresponding to the area filled with the denitrification resin.

[0011] Furthermore, the denitrification resin is a macroporous anion nitrate ion resin, which has a spherical particle appearance, a polystyrene copolymer skeleton, a quaternary amine functional group, a particle size range of 0.3 to 1.2 mm, and a total exchange capacity of 1000 mol / m 3 Chlorine type, water content is 52±3% chlorine type, loading density is 700-750g / l.

[0012] Furthermore, the main body of the fast-acting denitrification tank adopts a cylindrical carbon steel structure, the top of which is connected to a semicircular head, and three sets of lifting ears are evenly distributed on the head.

[0013] Furthermore, a backwash automatic valve and a backwash manual valve are provided on the backwash water inlet pipe and the backwash water outlet pipe.

[0014] Furthermore, both the resin supply pipe and the resin discharge pipe are provided with a resin automatic valve and a resin manual valve.

[0015] The utility model has the following advantages and beneficial effects: The device adopts the resin adsorption ion exchange denitrification method, which has the characteristics of mature technology, simple regeneration, convenient operation and management, high degree of nitrate removal, and low operating costs. The device meets the following conditions: A. It meets the characteristics of water volume changes. For any water treatment process with a selected scale, its treatment capacity has the problem of water volume treatment upper limit. Therefore, the device should have a large resistance to hydraulic shock loads to adapt to large water volume fluctuations; B. It has strong resistance to water quality shock loads. The device adopts physical methods, and the treatment effect is less affected by the environment and water quality; C. It has high efficiency in denitrification. The device adopts the resin adsorption ion exchange denitrification method to remove total nitrogen, and the removal rate reaches more than 90%; D. The treatment facilities operate stably and are easy to operate and manage. E. The treatment process is safe and pollution-free BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a flow chart of a small-sized mobile deep denitrification device according to a preferred embodiment of the present invention;

[0017] Figure 2 This is a structural schematic diagram of a small-sized mobile deep denitrification device according to a preferred embodiment of the present invention;

[0018] Figure 3 A top view of a quick-acting denitrification tank according to a preferred embodiment of the present invention;

[0019] Description of Figure Numbers:

[0020] 1. Water inlet and outlet system, 11. Water inlet lift pump, 12. Water inlet pipe, 13. Water outlet pipe, 14. Water inlet automatic valve, 15. Water outlet automatic valve,

[0021] 2. Quick-acting denitrification tank, 21. Water inlet, 22. Water outlet, 23. Water outlet area, 24. Filter plate layer, 25. Short handle filter head, 26. Inspection manhole, 27. Observation mirror, 28. Lifting lug,

[0022] 3. Backwash system, 31. Backwash pump, 32. Backwash inlet pipe, 33. Backwash automatic valve, 34. Backwash manual valve, 35. Backwash outlet pipe,

[0023] 4. Nitrate detector,

[0024] 5. Resin replacement system, 51. Resin replenishing pipe, 52. Resin discharge pipe, 53. Denitrification resin. DETAILED DESCRIPTION

[0025] For a better understanding of the present invention, the following embodiments are provided to further illustrate the present invention, but the present invention is not limited to the following embodiments.

[0026] like Figures 1 to 3 As shown, a small-scale mobile deep denitrification device includes: an inlet and outlet water system 1, a fast-acting denitrification tank 2, a backwash system 3, a nitrate detector 4, and a resin replacement system 5.

[0027] Among them, the main body of the quick-acting denitrification tank 2 adopts a cylindrical carbon steel structure, and the top is connected to a semicircular head. Three groups of lifting ears 28 are evenly distributed on the head. A water inlet 21 is provided at the upper end and a water outlet 22 is provided at the lower end. A filter plate layer 24 is provided at the lower end of the interior of the quick-acting denitrification tank 2 and is located above the water outlet 22. The filter plate layer 24 includes a filter plate and a short-handled filter head 25. The short-handled filter head 25 is made of ABS material. The filtering end is evenly arranged on the filter plate, and the short-handled straight pipe end extends downward from the filter plate; the filter plate layer 24 separates the bottom of the quick-acting denitrification tank 2 to form a water outlet area 23, which is connected to the water outlet 22.

[0028] The inlet and outlet water system 1 includes an inlet lift pump 11, an inlet pipe 12 and an outlet pipe 13. The lift pump is connected to the water inlet 21 through the inlet pipe 12, and the outlet pipe 13 is connected to the water outlet 22. The treated tail water of the sewage treatment plant enters the water inlet 21 of the quick-acting denitrification tank 2 through the lift pump and the inlet pipe 12. An inlet electric valve and an inlet manual valve are provided on the inlet pipe 12. After denitrification treatment in the quick-acting denitrification tank 2, the treated clean water flows by gravity to the outlet 22 of the quick-acting denitrification tank 2 and is discharged through the outlet pipe 13 to meet the discharge standards. An outlet electric valve and an outlet manual valve are provided on the outlet pipe 13.

[0029] The backwash system 3 includes a backwash pump 31, a backwash water inlet pipe 32, and a backwash water outlet pipe 35. The backwash pump 31 is connected to the water outlet 22 via the backwash water inlet pipe 32, and the backwash water outlet pipe 35 is connected to the water inlet 21. A nitrate detector 4 is provided on the quick-acting denitrification tank 2 for detecting the total nitrogen content at the water outlet 22. All water discharged from the water outlet 22 through the water outlet area 23 is detected by the nitrate detector 4. An automatic backwash valve 33 and a manual backwash valve 34 are provided on the backwash water inlet pipe 32 and the backwash water outlet pipe 35. In this embodiment, two quick-acting denitrification tanks 2 are arranged in parallel, one for use and one for backup. When the total nitrogen data monitored exceeds a set value, the automatic water inlet valve 14 on the water inlet pipe 12 of the quick-acting denitrification tank 2 is automatically closed, and the automatic water inlet valve 14 on the water inlet pipe 12 of the other set of quick-acting denitrification tanks 2 is opened, performing automatic switching operation between the quick-acting denitrification tanks 2.

[0030] When the quick-acting denitrification tank 2 is backwashed, the backwash pump 31, the backwash automatic valve 33 of the water inlet pipe 12, and the backwash automatic valve 33 of the water outlet pipe 13 are opened respectively, and the water inlet lift pump 11, the water inlet automatic valve 14, and the water outlet automatic valve 15 are closed; the manual valves in this embodiment are all normally open and are only used for maintenance of the automatic valves involved.

[0031] The resin replacement system 5 includes a resin replenishment pipe 51, a resin discharge pipe 52, and a denitrification resin 53. The denitrification resin 53 is filled in the rapid denitrification tank 2 and is arranged on the filter plate layer 24. The resin replenishment pipe 51 and the resin discharge pipe 52 are both connected to the rapid denitrification tank 2, corresponding to the upper and lower ends of the area filled with the denitrification resin 53. The denitrification resin 53 is a macroporous anionic nitrate ion resin with a spherical particle appearance. The skeleton is a polystyrene copolymer, the functional group is a quaternary amino group, the particle size range is 0.3 to 1.2 mm, and the total exchange capacity is 1000 mol / m 3 Chlorine type, water content is 52±3% chlorine type, loading density is 700-750g / l. The resin replenishing pipe 51 and the resin discharging pipe 52 are both provided with a resin automatic valve and a resin manual valve.

[0032] At the same time, an observation mirror 27 and an inspection manhole 26 are provided on the quick-acting denitrification tank 2, both of which are arranged corresponding to the area filled with the denitrification resin 53. The center height of the observation mirror 27 is consistent with the center height of the inspection manhole 26, and both are arranged on the outer wall at 1 / 2 of the height of the quick-acting denitrification tank 2. The size of the observation mirror 27 is 120*350mm, and the size of the inspection manhole 26 is DN450mm.

[0033] The device is provided with an inlet pipe 12 and an outlet pipe 13. When the total nitrogen in the inlet water fluctuates greatly, the temperature is too low, or the inlet water is highly toxic, the total nitrogen in the outlet water cannot meet the requirements, and the device can be used as an emergency standby. The device has high integration, small footprint, fast startup, high total nitrogen removal efficiency, and is easy to skid and move, thus solving the problem of excessive investment caused by the redundant design of the total nitrogen indicator in the original process. This device uses resin adsorption ion exchange denitrification, a process characterized by mature technology, simple regeneration, convenient operation and management, high nitrate removal, and low operating costs. It also meets the following requirements: A. It accommodates water volume fluctuations. For any water treatment process of a selected scale, its treatment capacity has an upper limit on the amount of water it can handle. Therefore, the device must possess a high resistance to hydraulic shock loads to accommodate large fluctuations in water volume. B. It has strong resistance to water quality shock loads. This device utilizes a physical method, and its treatment results are less affected by the environment and water quality. C. It has high denitrification efficiency. This device uses resin adsorption ion exchange denitrification to remove total nitrogen, achieving a removal rate exceeding 90%. D. The treatment facility operates stably and is easy to operate and manage. E. The treatment process is safe and pollution-free.

[0034] The device is simple and efficient, with a higher total nitrogen removal efficiency and stability than the biological method, and adopts a movable equipment structure to improve the operational efficiency of the sewage unit. It has good treatment effect, low investment, small footprint, low operating cost, simple operation, fast activation, stable operation, and strong applicability. It is suitable for emergency treatment when the effluent quality of the sewage plant deteriorates.

[0035] The above description is only a preferred embodiment of the present invention, and it is certainly not intended to limit the scope of rights of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and changes without departing from the principles of the present invention, and these improvements and changes are also considered to be within the scope of protection of the present invention.

Claims

1. A small portable deep denitrification device, characterized in that: include: Inlet and outlet water systems, fast-acting denitrification tanks, backwash systems, nitrate detectors, and resin replacement systems; A water inlet is provided at the upper end of the fast-acting denitrification tank and a water outlet is provided at the lower end thereof, a filter plate layer is provided at the lower end inside the fast-acting denitrification tank and is located above the water outlet; the water inlet and outlet systems include an inlet lift pump, an inlet pipe and an outlet pipe, the lift pump is connected to the water inlet through the inlet pipe, and the outlet pipe is connected to the water outlet; the backwash system includes a backwash pump, a backwash inlet pipe and a backwash outlet pipe, the backwash pump is connected to the water outlet through the backwash inlet pipe, and the backwash outlet pipe is connected to the water inlet; a nitrate detector is provided on the fast-acting denitrification tank for detecting the total nitrogen content at the water outlet; the resin replacement system includes a resin replenishing pipe, a resin discharge pipe and a denitrification resin, the fast-acting denitrification tank is filled with denitrification resin and is provided on the filter plate layer, the resin replenishing pipe and the resin discharge pipe are both connected to the fast-acting denitrification tank, corresponding to the upper and lower ends of the area filled with the denitrification resin respectively.

2. The small-sized mobile deep denitrification device as claimed in claim 1, characterized in that: It includes multiple fast-acting denitrification tanks arranged in parallel.

3. The small-sized mobile deep denitrification device as claimed in claim 1, characterized in that: An automatic water inlet valve is provided on the water inlet pipe, and an automatic water outlet valve is provided on the water outlet pipe.

4. The small-sized mobile deep denitrification device as claimed in claim 1, characterized in that: The filter plate layer includes a filter plate and a short-handled filter head. The short-handled filter head is made of ABS material. The filter ends are evenly arranged on the filter plate, and the short-handled straight pipe end extends downward from the filter plate.

5. The small-sized mobile deep denitrification device as claimed in claim 1, characterized in that: The fast-acting denitrification tank is equipped with an observation mirror and an inspection manhole, both of which are set corresponding to the area where the denitrification resin is filled.

6. The small-sized mobile deep denitrification device as claimed in claim 1, characterized in that: The denitrification resin is a macroporous anion nitrate ion resin with a spherical particle appearance, a polystyrene copolymer skeleton, a quaternary amine functional group, a particle size range of 0.3 to 1.2 mm, and a total exchange capacity of 1000 mol / m 3 Chlorine type, water content is 52±3% chlorine type, loading density is 700-750g / l.

7. The small-sized mobile deep denitrification device according to claim 1, characterized in that: The main body of the fast-acting denitrification tank adopts a cylindrical carbon steel structure, with a semicircular head connected to the top, and three sets of lifting ears are evenly distributed on the head.

8. The small-sized mobile deep denitrification device as claimed in claim 1, characterized in that: The backwash inlet pipe and the backwash outlet pipe are both provided with a backwash automatic valve and a backwash manual valve.

9. The small-sized mobile deep denitrification device according to claim 1, characterized in that: The resin replenishing pipe and the resin discharging pipe are both provided with a resin automatic valve and a resin manual valve.

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