CN211497218U - Desulfurization waste water ammonia nitrogen processing system - Google Patents
Desulfurization waste water ammonia nitrogen processing system Download PDFInfo
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- CN211497218U CN211497218U CN201922379596.1U CN201922379596U CN211497218U CN 211497218 U CN211497218 U CN 211497218U CN 201922379596 U CN201922379596 U CN 201922379596U CN 211497218 U CN211497218 U CN 211497218U
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Abstract
The utility model discloses a desulfurization waste water ammonia nitrogen processing system, include the raw water pump, preprocessing unit, gaseous state membrane processing unit and the advanced treatment unit who switches on with desulfurization waste water discharge workshop, its characterized in that: the device comprises a treatment unit, a pre-settling tank, an aeration regulating tank and a reaction settling tank which are sequentially communicated through pipelines, wherein the reaction settling tank comprises a reaction area and a water production area which are sequentially communicated, a gaseous film treatment unit comprises a plate heat exchanger, an acid circulating device and a film treatment device which are sequentially communicated through pipelines, and an advanced treatment unit comprises an oxidation tank, an aeration tank, an activated carbon filter and a clean water tank which are sequentially communicated through pipelines. The utility model discloses to the characteristics of high ammonia nitrogen of desulfurization waste water, biodegradability are poor, effectively solved desulfurization waste water about high ammonia nitrogen, difficult biochemical treatment's problem through preprocessing unit, gaseous state membrane unit, advanced treatment unit, entire system has advantages such as consumption of power is low, the running cost is low, operation management is simple.
Description
Technical Field
The utility model relates to a desulfurization waste water treatment field specifically indicates a desulfurization waste water ammonia nitrogen treatment system.
Background
In order to prevent the concentration of soluble chloride ions and fine dust particles in slurry from being too high during the wet desulphurization (limestone-gypsum method) of boiler flue gas, a certain amount of slurry needs to be discharged from an absorption tower at regular time to maintain the balance of materials in a desulphurization device, so that desulphurization waste water is generated. The content of ammonia nitrogen in the wastewater is high, the biodegradability of the wastewater is poor, and the traditional biochemical process cannot meet the application requirement and is difficult to treat. The standard discharge of the desulfurization wastewater is one of important factors disturbing many enterprises, and whether the wastewater can be stably treated and discharged after reaching the standard or not is already a bottleneck restricting the development of the enterprises along with the enhancement of national environmental protection requirements and law enforcement. The water quality discharged after the traditional desulfurization wastewater treatment process is used for treating cannot reach the standard, and great influence is generated on the environment.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main objective is to solve prior art's not enough, provides a desulfurization waste water ammonia nitrogen processing system, to the high ammonia nitrogen of desulfurization waste water, the poor characteristics of biodegradability, has effectively solved the problem about high ammonia nitrogen, difficult biochemical treatment of desulfurization waste water through preprocessing unit, gaseous state membrane unit, advanced treatment unit, and entire system has advantages such as consumption of power is low, the running cost is low, operation management is simple.
In order to solve the technical problem, the utility model provides a technical scheme does: the utility model provides a desulfurization waste water ammonia nitrogen processing system, includes raw water pump, preprocessing unit, gaseous state membrane processing unit and the advanced treatment unit with desulfurization waste water discharge workshop switch-on, include through pipeline switch-on's preliminary sedimentation tank, aeration equalizing basin and reaction sedimentation tank in proper order with processing unit, preliminary sedimentation tank meets with raw water pump, the reaction sedimentation tank is including the reaction zone and the water production district that switch-on in proper order, gaseous state membrane processing unit includes plate heat exchanger, sour circulation equipment and the membrane treatment equipment that switch-on in proper order through the pipeline, plate heat exchanger meets through the pipeline with the water production district, the advanced treatment unit includes oxidation pond, aeration tank, active carbon filter and the clean water basin that switch-on in proper order through the pipeline, the oxidation pond meets through the pipeline with membrane treatment equipment, membrane treatment equipment bottom is equipped with the evaporimeter through the pipeline switch-on.
As an improvement, a lift pump is connected and arranged between the aeration adjusting tank and the reaction sedimentation tank.
As an improvement, a transition pump is connected between the plate heat exchanger and the water producing area through a pipeline.
As an improvement, a lifting filter pump is arranged between the aeration tank and the activated carbon filter.
As a modification, an evaporation pump is arranged between the evaporator and the membrane treatment equipment.
As an improvement, the bottom of the pre-settling tank is communicated with a pneumatic diaphragm pump through a pipeline.
As an improvement, the bottom of the reaction area is communicated with a sludge concentration tank through a pipeline, and the sludge concentration tank is communicated with a compressor.
As an improvement, the membrane treatment equipment is communicated with cleaning equipment and dosing equipment through a pipeline.
As an improvement, lime milk, sodium carbonate, polymeric ferric sulfate and polyacrylamide are added in the reaction zone.
Compared with the prior art, the utility model the advantage lie in: this system architecture sets up rationally, and is functional strong, through materialization work and membrane treatment facility, cooperation senior oxidation is assisted and is handled with active carbon, can stably get rid of the ammonia nitrogen in the desulfurization waste water, fall the ammonia nitrogen to within 1mg/L, COD falls to within 200mg/L, and gypsum recycle in the former aquatic, the ammonium sulfate solid is sold as the product outward, reduce running cost, have advantages such as consumption of power is low, the running cost is low, operation management is simple.
Drawings
FIG. 1 is a schematic structural diagram of a desulfurization wastewater ammonia nitrogen treatment system.
As shown in the figure: 1. the system comprises a raw water pump, 2, a pre-settling tank, 3, an aeration regulating tank, 4, a lifting pump, 5, a reaction settling tank, 6, a reaction zone, 7, a water production zone, 8, a transition pump, 9, a plate heat exchanger, 10, an acid circulation tank, 11, acid circulation input equipment, 12, an evaporation pump, 13, an evaporator, 14, an oxidation tank, 15, an aeration tank, 16, a lifting filter pump, 17, an activated carbon filter, 18, a clean water tank, 19, a pneumatic diaphragm pump, 20, a sludge concentration tank, 21 and a compressor.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
With the attached drawing, a desulfurization waste water ammonia nitrogen treatment system comprises a raw water pump 1 communicated with a desulfurization waste water discharge workshop, a pretreatment unit, a gaseous film treatment unit and an advanced treatment unit, wherein the treatment unit comprises a pre-settling tank 2, an aeration regulating tank 3 and a reaction settling tank 5 which are sequentially communicated through pipelines, the pre-settling tank 2 is connected with the raw water pump 1, the reaction settling tank 5 comprises a reaction area 6 and a water production area 7 which are sequentially communicated, the gaseous film treatment unit comprises a plate heat exchanger 9, an acid circulation device 10 and a film treatment device 11 which are sequentially communicated through pipelines, the plate heat exchanger 9 is connected with the water production area 7 through a pipeline, the advanced treatment unit comprises an oxidation tank 14, an aeration tank 15, an activated carbon filter 17 and a clean water tank 18 which are sequentially communicated through pipelines, the oxidation tank 14 is connected with the film treatment device 11 through a pipeline, the bottom of the membrane treatment equipment 11 is communicated with an evaporator 13 through a pipeline.
And a lift pump 4 is connected between the aeration adjusting tank 3 and the reaction sedimentation tank 5.
And a transition pump 8 is connected between the plate heat exchanger 9 and the water producing area 7 through a pipeline.
A lifting filter pump 16 is arranged between the aeration tank 15 and the activated carbon filter 17.
An evaporation pump 12 is arranged between the evaporator 13 and the membrane treatment device 11.
The bottom of the pre-settling tank 2 is communicated with a pneumatic diaphragm pump 19 through a pipeline.
The bottom of the reaction zone 6 is communicated with a sludge concentration tank 20 through a pipeline, and the sludge concentration tank 20 is communicated with a compressor 21.
The membrane treatment equipment 11 is provided with cleaning equipment and dosing equipment through pipeline connection.
Lime milk, sodium carbonate, polymeric ferric sulfate and polyacrylamide are added in the reaction zone 6.
The utility model discloses when concrete implementation, desulfurization waste water carries out preliminary sedimentation in the workshop through the raw water pump sending to the preliminary sedimentation pond, gypsum precipitate after the sediment is carried to the workshop through pneumatic diaphragm pump and is retrieved, waste water flows into the aeration equalizing basin certainly, the aeration equalizing basin starts the aeration, guarantee quality of water volume stable, then through promoting the pump sending to the reaction zone of reaction sedimentation pond, lime milk is added in proper order to the reaction zone, sodium carbonate, polyferric sulfate, polyacrylamide, get rid of calcium magnesium ion and chemical oxygen demand in the waste water, waste water COD after the materialization is less than 300mg/L, the waste water of reaction sedimentation pond product water district gets into gaseous state membrane processing unit through transition pump after the preliminary treatment, throw the sodium hydroxide misce on the pipeline, guarantee waste water pH to maintain 10, adjust the temperature of waste water to 40 ℃ through plate heat exchanger, subsequently get into membrane equipment, start acid cycle equipment, adding concentrated sulfuric acid into an acid circulation tank, maintaining the pH value in the tank to be 2-3, and absorbing ammonia nitrogen in the wastewater by the concentrated sulfuric acid under the conditions of 40 ℃ and 10 to form ammonium sulfate, enabling concentrated ammonium sulfate to enter an evaporator through an evaporation pump to be evaporated and crystallized to form ammonium sulfate solid, enabling the ammonium sulfate to be used as a product export pin, enabling the ammonia nitrogen content of the wastewater treated by a gaseous membrane treatment unit to be less than 2mg/L and COD to be less than 300mg/L, enabling effluent of the gaseous membrane unit to flow into an oxidation tank, adding sodium hypochlorite into the oxidation tank to further remove residual COD and COD, enabling the oxidation tank to flow into an aeration tank, enabling a small amount of sodium sulfite to be added into the aeration tank, removing residual chlorine in the wastewater under the action of aeration and a reducing agent, pumping the wastewater into an activated carbon filter through a filter lifting pump, enabling the activated carbon filter to flow into a clear water tank, discharging the wastewater from the clear water tank, and enabling, COD is less than 200mg/L, this system architecture sets up rationally, and is functional strong, through materialization work and membrane treatment facility, cooperation senior oxidation is assisted and is handled with the active carbon, can stably get rid of the ammonia nitrogen in the desulfurization waste water, fall the ammonia nitrogen within 1mg/L, COD falls within 200mg/L, and gypsum recycle in the former aquatic, the ammonium sulfate solid is sold as the product outward, reduce the running cost, it is low to have consumption of power, the running cost is low, advantages such as operation management is simple.
The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.
Claims (9)
1. The utility model provides a desulfurization waste water ammonia nitrogen processing system, includes raw water pump (1), preprocessing unit, gaseous state membrane processing unit and the advanced treatment unit who switches on with desulfurization waste water discharge workshop, its characterized in that: the pretreatment unit comprises a preliminary sedimentation tank (2), an aeration adjusting tank (3) and a reaction sedimentation tank (5) which are sequentially communicated through pipelines, the pre-sedimentation tank (2) is connected with the raw water pump (1), the reaction sedimentation tank (5) comprises a reaction zone (6) and a water production zone (7) which are communicated in sequence, the gaseous membrane treatment unit comprises a plate heat exchanger (9), an acid circulation device (10) and a membrane treatment device (11) which are sequentially communicated through pipelines, the plate heat exchanger (9) is connected with the water production area (7) through a pipeline, the advanced treatment unit comprises an oxidation tank (14), an aeration tank (15), an activated carbon filter (17) and a clean water tank (18) which are communicated in sequence through pipelines, the oxidation pond (14) is connected with the membrane treatment equipment (11) through a pipeline, and the bottom of the membrane treatment equipment (11) is communicated with an evaporator (13) through a pipeline.
2. The ammonia nitrogen treatment system for desulfurization wastewater according to claim 1, characterized in that: and a lift pump (4) is connected between the aeration adjusting tank (3) and the reaction sedimentation tank (5).
3. The ammonia nitrogen treatment system for desulfurization wastewater according to claim 1, characterized in that: and a transition pump (8) is connected between the plate heat exchanger (9) and the water production area (7) through a pipeline.
4. The ammonia nitrogen treatment system for desulfurization wastewater according to claim 1, characterized in that: a lifting filter pump (16) is arranged between the aeration tank (15) and the activated carbon filter (17).
5. The ammonia nitrogen treatment system for desulfurization wastewater according to claim 1, characterized in that: an evaporation pump (12) is arranged between the evaporator (13) and the membrane treatment equipment (11).
6. The ammonia nitrogen treatment system for desulfurization wastewater according to claim 1, characterized in that: the bottom of the pre-settling tank (2) is communicated with a pneumatic diaphragm pump (19) through a pipeline.
7. The ammonia nitrogen treatment system for desulfurization wastewater according to claim 1, characterized in that: the bottom of the reaction zone (6) is communicated with a sludge concentration tank (20) through a pipeline, and the sludge concentration tank (20) is communicated with a compressor (21).
8. The ammonia nitrogen treatment system for desulfurization wastewater according to claim 1, characterized in that: the membrane treatment equipment (11) is communicated with cleaning equipment and dosing equipment through a pipeline.
9. The ammonia nitrogen treatment system for desulfurization wastewater according to claim 1, characterized in that: lime milk, sodium carbonate, polymeric ferric sulfate and polyacrylamide are added in the reaction zone (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922379596.1U CN211497218U (en) | 2019-12-26 | 2019-12-26 | Desulfurization waste water ammonia nitrogen processing system |
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| CN201922379596.1U CN211497218U (en) | 2019-12-26 | 2019-12-26 | Desulfurization waste water ammonia nitrogen processing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112573720A (en) * | 2020-12-28 | 2021-03-30 | 中色科技股份有限公司 | Thermal power plant desulfurization wastewater zero-discharge system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112573720A (en) * | 2020-12-28 | 2021-03-30 | 中色科技股份有限公司 | Thermal power plant desulfurization wastewater zero-discharge system and method |
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