CN215712205U - Emergency treatment device for water polluted desalting water tank - Google Patents
Emergency treatment device for water polluted desalting water tank Download PDFInfo
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- CN215712205U CN215712205U CN202120507099.XU CN202120507099U CN215712205U CN 215712205 U CN215712205 U CN 215712205U CN 202120507099 U CN202120507099 U CN 202120507099U CN 215712205 U CN215712205 U CN 215712205U
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Abstract
The utility model relates to an emergency treatment device for a desalted water tank after water pollution, which comprises a pre-desalted water pump, a primary desalted mixed bed unit, a desalted water tank and a backflow water pipe, wherein the pre-desalted water pump, the primary desalted mixed bed unit and the desalted water tank are sequentially connected, one end of the backflow water pipe is connected with a water outlet pipe of the desalted water tank, and the other end of the backflow water pipe is connected with a water inlet of the pre-desalted water pump.
Description
Technical Field
The utility model relates to an emergency treatment device for a desalted water tank after water quality pollution.
Background
The common chemical water treatment mode of the thermal power plant is as follows: clear water subjected to coagulation, clarification and filtration → ultrafiltration water inlet pump → heater → ultrafiltration cartridge filter → ultrafiltration membrane module → ultrafiltration water production tank → ultrafiltration water production pump → reverse osmosis cartridge filter → reverse osmosis high-pressure pump → reverse osmosis membrane module → predehydration brine tank → cation exchanger → anion exchanger → mixed ion exchanger → demineralized water tank → demineralized water pump → main plant. After the treatment of the technical system of the scheme, the effluent quality can reach the following standards: silicon dioxide: less than or equal to 10 g/L; conductivity (25 ℃): less than or equal to 0.10 s/cm; TOCi: less than or equal to 200g/L, for the boiler provides sufficient demineralized water, satisfy the boiler moisturizing requirement of power plant, wherein the demineralized water case adopts flexible floating roof sealed for straight cylinder, and the demineralized water case is intake from the lower part, and the lower part is gone out water.
However, the desalted water tank is easily polluted by air in the tank body, acid and alkali liquor for regeneration, unqualified mixed bed effluent, organic matters, leaked resin and the like, so that the conductivity of the desalted water is increased, and the contents of silicon dioxide, sodium ions, organic matters and chlorine ions are increased. Polluted demineralized water enters a boiler water supply system through a demineralized water pump, and salt deposition or corrosion can be formed at the parts of a thermodynamic system, such as a turbine blade and the like, under the environment of high temperature and high pressure, so that the safe operation of a unit is threatened, and safety accidents are easily caused.
The reasons for contamination of the demineralized water tank are many, including:
1. when the conductivity meter fails or the on-line silicon meter fails, the staff in the shift does not closely monitor the change of the numerical value, so that the desalted water which exceeds the standard is continuously sent to the desalted water tank;
2. the inaccurate manual measurement of silicon dioxide, sodium ions and the like caused by the problem of the test medicament is carried out, and unqualified water is mistakenly taken as qualified water and is continuously sent to a desalting water tank;
3. when the anion bed, the cation bed and the mixed bed of the demineralized water preparation device are regenerated, the manual valve for the effluent of the anion bed and the manual door for the effluent of the mixed bed are not closed or leaked, so that acid and alkali liquor for regeneration are leaked into the demineralized water tank through the anion bed or the mixed bed effluent main pipe;
4. the operators on duty operate by mistake and put the regenerating desalting equipment into operation;
5. the outlet door of the mixed bed or the shadow bed is not closed tightly or the valve is opened by mistake in failure in the regeneration process;
6. mixed bed resin traps have defects that cause either crushed resin or leaked resin to enter the demineralization tank.
At present, the technical measures after the desalting water tank is polluted are to immediately stop the operation of the failed desalting equipment and stop the operation of the polluted desalting water tank, find out the reason of the pollution of the desalting water tank as soon as possible, find out the reason and treat the pollution, if two desalting water tanks are polluted, drain the stored water in the desalting water tanks, and inject the qualified desalting water after washing, but the method has the defects of environmental pollution, 3000 tons of water are stored in one desalting water tank, 6000 tons of water are stored in two desalting water tanks, and the total draining is serious waste of water resources.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide an environment-friendly and energy-saving emergency treatment device for the water pollution of a desalted water tank.
The purpose of the utility model can be realized by the following technical scheme:
the utility model provides an emergency treatment device after desalination water tank water pollution, mixes bed unit, desalination water tank and backward flow water pipe including desalination water pump, one-level desalination in advance, desalination water pump, one-level desalination in advance mix bed unit and desalination water tank and connect gradually, the one end of backward flow water pipe with the play water piping connection of desalination water tank, the other end is connected with the water inlet of desalination water pump in advance.
Further, the device still includes the three-way valve, the three-way valve set up in the outlet pipe department of demineralized water tank, and with backward flow water pipe intercommunication.
Furthermore, a stop valve is arranged on the return water pipe, and the stop valve is arranged at one end of the return water pipe close to the pre-desalting water pump.
Furthermore, a conductivity meter is arranged on the backflow water pipe.
Furthermore, a flow meter is arranged on the backflow water pipe.
Further preferably, the flow meter and the electric conductivity meter are arranged at one end of the backflow water pipe close to the three-way valve.
Further preferably, the flow meter is disposed between the conductivity meter and the three-way valve.
Further, the one-level desalination mixes a bed unit including positive bed, negative bed and the bed that mixes of end to end connection in proper order, the import of positive bed and the exit linkage of predehydration water pump, the export of the bed that mixes and the access connection of demineralized water tank.
Further preferably, valves are arranged at the inlet and the outlet of the male bed, the female bed and the mixing bed.
Preferably, the size of the backflow water pipe is the same as that of the outlet pipe of the desalting water tank, and the backflow water pipe is an S30408 stainless steel water pipe.
Compared with the prior art, the utility model has the following advantages:
1) and (4) water source saving: according to the utility model, the return water pipe is arranged, polluted water in the desalted water tank is returned to the front of the pre-desalted water pump again, primary desalting and mixed bed treatment are carried out again, 6000 tons of water are not required to be discharged completely, the utilization rate of water resources is effectively improved, and the effects of environmental protection and energy saving are achieved;
2) simple structure, low price: the utility model only needs to add a section of pipeline and a three-way valve on the outlet water pipe of the desalting water tank, and because the return water pipe is connected to the inlet of the pre-desalting water pump, a pump does not need to be added, so the cost is low;
3) the overhaul is convenient: because the structure is simple, all the parts are easy to obtain, and the maintenance and the replacement are convenient;
4) safe and reliable: the main body of the utility model is a backflow water pipe, and an S30408 stainless steel water pipe which is the same as a water outlet pipe of a desalting water tank is adopted, so that the utility model is safe and reliable.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein: 1. a pre-desalting water pump, 2, a cation bed, 3, an anion bed, 4, a mixed bed, 5, a desalting water tank, 6, a three-way valve, 7, a flow meter, 8, a conductivity meter, 9, a reflux water pipe, 10 and a stop valve.
Detailed Description
The utility model is described in detail below with reference to the figures and specific embodiments.
Example (b):
the utility model provides an emergency treatment device for a desalted water tank after water pollution, which can be used for finding the reason of water pollution of the desalted water tank and correctly treating the reason, and then using a return water pipe to remove the polluted water in the desalted water tank once again by using a primary desalting and mixing bed, so that the water quality in the desalted water tank can be effectively improved, and the water quality reaches the standard. And the polluted water in the demineralized water tank is not required to be completely emptied, so that the water resource protection is realized, and the economic benefit of a power plant is guaranteed.
As shown in fig. 1, the device comprises a pre-desalting water pump 1, a first-stage desalting mixed bed unit, a desalting water tank 5 and a backflow water pipe 9, wherein the pre-desalting water pump 1, the first-stage desalting mixed bed unit and the desalting water tank 5 are sequentially connected, one end of the backflow water pipe 9 is connected with a water outlet pipe of the desalting water tank 5, and the other end of the backflow water pipe is connected with a water inlet of the pre-desalting water pump 1. In this embodiment, the size of the water return pipe 9 is the same as that of the outlet pipe of the demineralized water tank 5, and the water return pipe is an S30408 stainless steel water pipe.
Wherein, the three-way valve 6 is arranged on the water outlet pipe of the demineralized water tank 5, the three-way valve 6 is communicated with the inlet of the backflow water pipe 9, the backflow water pipe 9 is provided with the stop valve 10, and the stop valve 10 is arranged at one end of the backflow water pipe 9 close to the pre-desalted water pump 1. The backflow water pipe 9 is further provided with a conductivity meter 8 and a flow meter 7, the flow meter 7 and the conductivity meter 8 are arranged at one end, close to the three-way valve 6, of the backflow water pipe 9, and the flow meter 7 is arranged between the conductivity meter 8 and the three-way valve 6.
The one-level desalting mixed bed unit comprises a cation bed 2, an anion bed 3 and a mixed bed 4 which are sequentially connected end to end, wherein an inlet of the cation bed 2 is connected with an outlet of the pre-desalting water pump 1, an outlet of the mixed bed 4 is connected with an inlet of the desalting water tank 5, and valves are arranged at the inlets and outlets of the cation bed 2, the anion bed 3 and the mixed bed 4.
The working principle of the utility model is as follows:
the emergency treatment device after the water pollution of the desalted water tank is characterized in that a backflow water pipe 9 is connected to a water outlet pipe of the desalted water tank 5, the other end of the backflow water pipe 9 is connected to an inlet of a pre-desalted water pump 1, the real reason of the water pollution of the desalted water tank is found out through investigation, after the water pollution is correctly treated, a three-way valve 6 at an outlet of the desalted water tank 5 is opened, all polluted water in the desalted water tank 5 flows to the inlet of the pre-desalted water pump 1 through the backflow water pipe 9, the polluted water is pumped into a primary desalting mixed bed unit through the pressure given by the pre-desalted water pump 1, sequentially passes through an anode bed 2, a cathode bed 3 and a mixed bed 4, is equal to once boiler make-up water treatment again, and returns to the desalted water tank 5 again. During the period, whether the polluted desalted water is normally output can be monitored by observing the flow meter 7 on the return water pipe 9, whether the conductivity of the polluted desalted water is reduced to a normal range is monitored by observing the conductivity meter 8 on the return water pipe 9, namely the conductivity is less than or equal to 0.10s/cm, if the conductivity of the return water pipe is monitored to be less than or equal to 0.10s/cm, the three-way valve 6 on the return water pipe 9 can be closed, the desalted water can be subjected to backflow treatment, and the boiler feedwater treatment system can normally operate to supply water to the unit.
While the utility model has been described with reference to specific embodiments, the utility model is not limited thereto, and those skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope of the utility model. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides an emergency treatment device after demineralized water tank water quality pollution, its characterized in that, mixes a bed unit, demineralized water tank (5) and backward flow water pipe (9) including demineralized water pump (1), one-level desalination in advance, predehydration water pump (1), one-level desalination in advance mix a bed unit and demineralized water tank (5) and connect gradually, the one end of backward flow water pipe (9) go out water piping connection with demineralized water tank (5), the other end is connected with the water inlet of predehydration water pump (1).
2. The emergency treatment device for the water pollution of the demineralized water tank as claimed in claim 1, characterized in that the device further comprises a three-way valve (6), wherein the three-way valve (6) is arranged at the outlet pipe of the demineralized water tank (5) and is communicated with the return water pipe (9).
3. The emergency treatment device for the water pollution of the demineralized water tank as claimed in claim 1, characterized in that the return water pipe (9) is provided with a stop valve (10), and the stop valve (10) is arranged at one end of the return water pipe (9) close to the pre-desalting water pump (1).
4. The emergency treatment device for the water pollution of the demineralized water tank as claimed in claim 2, characterized in that the electric conductivity meter (8) is arranged on the return water pipe (9).
5. The device for the emergency treatment of the water pollution of the demineralized water tank as claimed in claim 4, characterized in that the flow meter (7) is further arranged on the backflow water pipe (9).
6. The device for the emergency treatment of the water pollution in the demineralized water tank according to claim 5, characterized in that the flow meter (7) and the electric conductivity meter (8) are arranged at one end of the return water pipe (9) close to the three-way valve (6).
7. The device as claimed in claim 6, wherein the flow meter (7) is arranged between the conductivity meter (8) and the three-way valve (6).
8. The emergency treatment device of the desalted water tank after water pollution is carried out according to claim 1, wherein the first-stage desalting mixed bed unit comprises a positive bed (2), a negative bed (3) and a mixed bed (4) which are sequentially connected end to end, an inlet of the positive bed (2) is connected with an outlet of the pre-desalting pump (1), and an outlet of the mixed bed (4) is connected with an inlet of the desalted water tank (5).
9. The emergency treatment device for the water pollution of the demineralized water tank as claimed in claim 8, characterized in that valves are arranged at the inlet and the outlet of the cation bed (2), the anion bed (3) and the mixed bed (4).
10. The emergency treatment device for the water pollution of the demineralized water tank as claimed in claim 1, wherein the size of the water return pipe (9) is the same as that of the water outlet pipeline of the demineralized water tank (5), and the water return pipe and the water outlet pipeline are both made of S30408 stainless steel water pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120507099.XU CN215712205U (en) | 2021-03-10 | 2021-03-10 | Emergency treatment device for water polluted desalting water tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120507099.XU CN215712205U (en) | 2021-03-10 | 2021-03-10 | Emergency treatment device for water polluted desalting water tank |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114620807A (en) * | 2022-03-22 | 2022-06-14 | 中核龙原科技有限公司 | Power plant's demineralized water quality of water hoisting device |
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2021
- 2021-03-10 CN CN202120507099.XU patent/CN215712205U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114620807A (en) * | 2022-03-22 | 2022-06-14 | 中核龙原科技有限公司 | Power plant's demineralized water quality of water hoisting device |
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