CN218202447U - Wastewater treatment system of deamination tower - Google Patents
Wastewater treatment system of deamination tower Download PDFInfo
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- CN218202447U CN218202447U CN202222412508.5U CN202222412508U CN218202447U CN 218202447 U CN218202447 U CN 218202447U CN 202222412508 U CN202222412508 U CN 202222412508U CN 218202447 U CN218202447 U CN 218202447U
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Abstract
The utility model discloses a deamination tower effluent disposal system, belong to the water treatment field, including the former pond that loops through the pipe connection, the bag filter, the safety filter, retrieve reverse osmosis system, remove ammonia nitrogen ion exchange device, former water tank, the safety filter, one-level reverse osmosis system, one-level reverse osmosis produces the water tank, second grade reverse osmosis system, second grade reverse osmosis produces the water tank, EDI system and pure water case, wherein retrieve reverse osmosis system and still have concentration reverse osmosis system and triple effect evaporation system through the pipe connection, concentration reverse osmosis system and strip recovery unit are equipped with the product water pipeline of connecting the former pond, one-level reverse osmosis system is provided with the first dense water return line that communicates the former pond; the secondary reverse osmosis system is provided with a second concentrated water return pipeline communicated with the raw water tank; the EDI system is equipped with the third dense water return line that intercommunication one-level reverse osmosis produced the water tank, through the utility model discloses deamination tower waste water after the processing, through detecting, reaches the emission standard of zero release.
Description
Technical Field
The utility model relates to a water treatment technology field especially relates to a deamination tower effluent disposal system.
Background
In order to meet the requirement of a ring evaluation report, a chemical production factory needs a set of water treatment system for treating and recycling the wastewater of the deamination tower and concentrating and crystallizing inorganic salt to generate solid wastewater so as to achieve the purpose of zero emission required by the deamination tower.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problems and providing a wastewater treatment system of a deamination tower, which comprises a raw water tank, a filtering unit, a recovery reverse osmosis system, an ammonia nitrogen ion exchange device and a deionized water device which are sequentially connected by pipelines, wherein the raw water tank is provided with a water inlet communicated with wastewater of the deamination tower, and the deionized water device is provided with a water outlet for providing water for a water consumption point;
retrieve reverse osmosis system and still have connected gradually concentrated reverse osmosis system and triple effect evaporation system through the pipeline, triple effect evaporation system passes through pipeline intercommunication strip recovery unit, strip recovery unit with concentrated reverse osmosis system all is equipped with the product water pipeline that communicates former pond and be used for carrying its product water.
Further, the filtering unit comprises a bag filter and a cartridge filter which are connected with each other through a pipeline, the cartridge filter is communicated with the recovery reverse osmosis system, the bag filter is communicated with the raw water tank, and a lifting pump is further arranged on the pipeline between the raw water tank and the bag filter.
Further, the deionized water device comprises a raw water tank, a security filter, a first-stage reverse osmosis system, a first-stage reverse osmosis water production tank, a second-stage reverse osmosis system, a second-stage reverse osmosis water production tank, an EDI system and a pure water tank which are sequentially communicated through pipelines, a raw water pump is arranged on the pipeline between the raw water tank and the security filter, the raw water tank is communicated with the ammonia nitrogen ion exchange device, and the water outlet is arranged on the pure water tank.
Furthermore, the first-stage reverse osmosis system is provided with a first concentrated water port, the first concentrated water port is connected with a first concentrated water return pipeline, and the other end of the first concentrated water return pipeline is communicated with the raw water tank.
Furthermore, the second-stage reverse osmosis system is provided with a second concentrated water port, the second concentrated water port is connected with a second concentrated water return pipeline, and the other end of the second concentrated water return pipeline is communicated with the raw water tank.
Furthermore, the EDI system is provided with a third concentrated water port, the third concentrated water port is connected with a third concentrated water return pipeline, and the other end of the third concentrated water return pipeline is communicated with the primary reverse osmosis water production tank.
Furthermore, the water outlet is communicated with a conveying pipeline for conveying pure water to a water consumption point, and a pure water pump is arranged on the conveying pipeline.
Compared with the prior art, the beneficial effects of the utility model are that: through the utility model discloses deamination tower waste water after handling, through detecting, reaches the emission standard that the report requires is evaluated to the ring.
Drawings
FIG. 1 is a schematic flow diagram of the wastewater treatment system of the deamination tower of the utility model.
Detailed Description
A more detailed description of the present invention, and as it will be seen in the following description, is given in conjunction with the accompanying schematic drawings, wherein there is shown a preferred embodiment of the present invention, it being understood that modifications of the invention herein described may be made by those skilled in the art while still achieving the beneficial effects of the invention, and therefore the following description is to be taken as an extensive overview of the skilled in the art and not as a limitation of the invention.
In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.
A wastewater treatment system of a deamination tower comprises a raw water pool, a bag filter and a cartridge filter which are sequentially connected through pipelines. The system comprises a recovery reverse osmosis system, an ammonia nitrogen removal ion exchange device and a deionized water device, wherein the deionized water device comprises an original water tank, a cartridge filter, a first-stage reverse osmosis system, a first-stage reverse osmosis water production tank, a second-stage reverse osmosis system, a second-stage reverse osmosis water production tank, an EDI system and a pure water tank which are sequentially connected through pipelines. The raw water pool is provided with a water inlet communicated with the deamination tower waste water through a pipeline, the pure water tank is provided with a water outlet, and the water outlet is connected with a conveying pipeline for conveying pure water in the pure water tank to a water consumption point. A pure water pump is arranged on the conveying pipeline; a lifting pump is arranged on a pipeline between the raw water pool and the bag filter; a raw water pump is arranged on the pipeline between the raw water tank and the cartridge filter.
The recovery reverse osmosis system is also sequentially connected with a concentration reverse osmosis system and a triple-effect evaporation system through pipelines, the triple-effect evaporation system is connected with a stripping recovery device through pipelines and used for conveying evaporated condensate water to the stripping recovery device, and conveying produced water to a raw water pool through pipelines in work. The concentrated reverse osmosis system is used for concentrating concentrated water generated by the recovered reverse osmosis system in the concentrated reverse osmosis system. The body is provided with a section of membrane arrangement configuration with a plurality of pressure containers connected in parallel, and a special material concentration RO membrane is arranged in each pressure container. Chemical cleaning connectors are arranged on the liquid inlet side, the concentration side and the permeate side of the membrane concentration device to facilitate connection during chemical cleaning. The water inlet, water production and concentrated water pipelines of the system are all provided with a series of control valves, monitoring instruments and program control operating systems, which can ensure the systematic operation of long-term quality guarantee and quantity guarantee of equipment.
The principle of the triple-effect evaporation system is as follows: the steam is used as a heat source in the I-effect heater to heat the material in the I-effect; the material in the first-effect separation chamber is evaporated to generate secondary steam, and the secondary steam enters the second-effect heater to be used as a heat source to heat the material in the second effect; the material in the II-effect separation chamber is evaporated to generate secondary steam, and the secondary steam enters the III-effect heater to be used as a heat source to heat the material in the III-effect. III-effect secondary steam enters a preheater to preheat raw water; the whole system fully utilizes the wet and latent heat to save the consumption of the raw steam. The system completes the purpose of evaporative crystallization under the joint operation of a preheater, a triple-effect heater, a triple-effect separator, a condenser, a crystallization tank, a centrifuge and other equipment.
The raw material liquid enters a preheater under the action of a feed pump, enters a third-effect separator after being preheated by the preheater, flows uniformly from bottom to top on the inner wall of a heating pipe through a third heating chamber in the third-effect separator, is heated to the boiling point of the material to reach a boiling state, is subjected to water separation and evaporation after being heated, enters a third-effect separation chamber to complete steam-liquid separation, and after primary natural circulation in the third effect is completed, the material liquid which completes primary concentration is sent to the second-effect separator through a countercurrent pump, and is circulated and evaporated and concentrated in the second-effect separator according to the same process as the third-effect, after the material reaches a certain concentration in the second-effect, the material is sent to the first-effect separator through the countercurrent pump to be evaporated and concentrated by the same principle, the concentration of the original material is increased, the material is concentrated to supersaturation in the separation chamber and generates crystals, and the heating of a tube array to prevent crystals in the material from blocking the material from influencing the material circulation of the material, the material is forcibly circulated by arranging a forced circulation pump in the first-effect, so that the flow rate of the material in a tube of the heater array of the evaporator reaches more than or equal to 1.0m/s, and when the final concentration of the material liquid reaches the required material liquid, the next-effect, the material liquid is sent to a discharge port of a discharge system of the next-effect separator.
It should be noted that, in order to achieve better treatment effect and achieve the goal of zero emission. A first concentrated water port, a second concentrated water port and a third concentrated water port are respectively arranged on a first-stage reverse osmosis system, a second-stage reverse osmosis system and an EDI system, and the first concentrated water port is communicated with a raw water tank through a first concentrated water return pipeline; the second concentrated water port is communicated with the raw water tank through a second concentrated water return pipeline; the third concentrated water port is communicated with the first-stage reverse osmosis water production tank through a third concentrated water return pipeline, and the arrangement of the concentrated water return pipeline is a procedure that concentrated water can flow back to the previous procedure so as to complete repeated and cyclic treatment and better achieve the aim of zero emission.
The following is a brief description of each equipment in the deamination tower wastewater treatment system.
A raw water pool: in order to ensure the stability of the water inflow of the system, a set of raw water tank with the volume of 4m & lt 3 & gt and made of SUS304 is arranged, and two raw water pumps are configured.
A bag filter: the bag filter is characterized in that waste water passes through a filter bag under the action of pressure through the filter bag, so that large-particle pollutants, suspended matters and other impurities are intercepted by the filter bag. The filtrate flows out along the blue wall of the metal supporting net, thereby achieving the purpose of filtration. The two 10 mu bag filters have strong dirt-holding capacity and long service life.
A cartridge filter: the cartridge filter is used for intercepting particles larger than 5 mu brought by the pre-treatment effluent so as to prevent the particles from entering the wastewater recovery reverse osmosis system. The particles may break down the reverse osmosis membrane module after being accelerated by the high pressure pump, causing a large amount of salt leakage and scratching the impeller of the high pressure pump.
And (3) recovering a reverse osmosis system: the reverse osmosis technology is the most advanced, energy-saving and efficient separation technology at present. The reverse osmosis system utilizes the characteristics of a reverse osmosis membrane to remove most of soluble salts, colloids, organic matters and microorganisms in water. The reverse osmosis principle is that under the pressure higher than the osmotic pressure of the solution, the solute in the solution is separated from the solvent by means of the selective interception effect of the reverse osmosis membrane which only allows water molecules to permeate, thereby achieving the purpose of removing pollutants. The reverse osmosis membrane can separate various metal non-metal ions, bacteria, pyrogen and other substances in water, and the standard desalination rate can reach more than 99.6 percent.
Remove ammonia nitrogen ion exchange unit: the recovered water produced by the reverse osmosis system enters an ammonia nitrogen removal ion exchange device, and the reduction of the content of ammonia nitrogen ions is realized by using a super-gel type strong-acid cation exchange resin for ion exchange.
Evaporating a condensed water tank: the evaporation condensate water generated by the triple-effect evaporation system enters an evaporation condensate water tank, the capacity of the water tank is 1m & lt 3 & gt, the material SUS304 is adopted, and two condensate pumps are adopted.
A raw water tank: the produced water of the ammonia nitrogen removal ion exchange device enters an 8t/h system raw water tank, a raw water tank is arranged for ensuring the water inflow of the system to be stable, and the volume of the raw water tank is 4m 3 The material is PE, and two raw water pumps are configured.
A first-stage reverse osmosis system: the first-stage reverse osmosis device is the most important desalting device in the system, and the reverse osmosis system utilizes the characteristics of the reverse osmosis membrane to remove most of soluble salt, colloid, organic matters and microorganisms in water. Reverse osmosis is a process in which fluid is driven by pressure to separate ions from water by a reverse osmosis membrane. Reverse osmosis: when a pressure greater than the osmotic pressure is applied to the solution, water moves in the opposite direction to the normal osmotic phenomenon. The principle of reverse osmosis is basically the same as that of ultrafiltration, but the aperture of the reverse osmosis membrane is smaller than that of the ultrafiltration membrane, so that not only high molecular substances but also low molecular substances such as inorganic salts, sugars, amino acids and the like can be intercepted, and therefore, the water permeating through the osmosis membrane is almost pure water. The reverse osmosis membrane can separate various metal non-metal ions, bacteria, pyrogen and other substances in water. The water inlet, water production and concentrated water pipelines of the system are all provided with a series of control valves, monitoring instruments and program control operating systems, which can ensure the systematic operation of long-term quality guarantee and quantity guarantee of equipment.
A first-stage reverse osmosis water production tank: the produced water of the first-stage reverse osmosis directly enters a first-stage reverse osmosis water producing tank. The system is configured as a sanitary water tank with a volume of 2m 3 And the material SUS304.
A secondary reverse osmosis system: the first-stage reverse osmosis produced water enters a second-stage reverse osmosis device for secondary treatment, so that ultrapure water with higher quality is obtained, and the utilization rate of raw water is improved. The secondary reverse osmosis device is provided with 1 set, and the output of each set is 5m 3 H ofA reverse osmosis device.
A second-stage reverse osmosis water production tank: the produced water of the second-level reverse osmosis enters a second-level reverse osmosis water producing tank, and the second-level reverse osmosis water producing tank is a sanitary water producing tank. The system is provided with a sanitary water tank with a volume of 2m 3 And the material SUS304.
EDI system: although the desalting rate of the reverse osmosis system is up to more than 98%, the conductivity of water cannot meet the requirement of process water, so that an EDI desalting system is required to be arranged after the water is produced in the secondary reverse osmosis water production tank to meet the requirement of final water quality.
The system is provided with 1 set of EDI system. Each set of the power output is 4m 3 /h。
Pure water tank: the produced water of EDI enters into the ultra-pure water tank. The system is provided with a sanitary water tank with the volume of 2m < 3 > and made of SUS316L, and a pure water pump is arranged to supply pure water to a water consumption point.
The utility model discloses still be provided with control system, in this control system, adopted full-automatic "PLC + touch-sensitive screen" control. In the aspect of monitoring the running state of the system, the touch screen plays a role of a human-computer interaction interface. The running, exiting, water inlet backwashing, commissioning and the like of the device are realized through automatic operation. The system is provided with two sets of electric control systems which respectively control the deamination tower wastewater treatment system and the 8t/h deionized water device, and the two sets of electric control systems are independently operated and controlled.
Principle of electrical design
The design of the electric automation control system must be carried out according to the process requirements and the electric requirements mentioned by process design engineers and corresponding national and industrial standards, and the accurate control and convenient adjustment of process parameters must be ensured, and the operation of process equipment and power devices is safe, stable and reliable. Ensuring that the wastewater reuse system facility has larger flexibility and adjustment allowance so as to adapt to the change of water quality and water quantity.
The electrical control system realizes the control of process parameters including flow, liquid level and the like, and the elements of the electrical control system fully consider the requirements of special environments such as fire prevention, explosion prevention, moisture prevention, corrosion prevention and the like. The electric appliance element adopts a product with sensitivity, reliability, excellent quality and high cost performance.
Function of the electrical system
1) Data acquisition and storage function
The system can automatically and continuously detect, record and display data such as each process link, liquid level and effluent flow of the wastewater reuse system in each time period, and the operation condition of production equipment.
2) Automatic protection function
The PLC carries out comprehensive analysis on the acquired data, thereby judging possible accidents in the production process, finishing automatic alarm and actively taking preventive measures to prevent accidents from happening and expanding and achieving the purpose of protecting human bodies and equipment.
3) Automatic control and regulation function
When the system is in an automatic control state, the PLC alternately operates the start-stop equipment and the automatic switching equipment according to the process parameters, the equipment working conditions and the control requirements and according to the specified time period, the set logic sequence and the set process parameters.
The utility model relates to a deamination tower effluent disposal system's process flow does: the deamination tower waste water is pretreated by a bag filter and a cartridge filter, enters a recovery reverse osmosis system after reaching the water inlet requirement of the recovery reverse osmosis system, is treated by the recovery reverse osmosis system to produce water, enters an ammonia nitrogen ion exchange device, the ammonia nitrogen ion exchange device treats the water to recycle the system produced water, concentrated water enters a concentration reverse osmosis system, and concentrated solution is further concentrated to improve the concentration. The concentrated solution enters a triple-effect evaporator, is evaporated at a multilayer split-flow temperature, and steam is discharged, is cooled and condensed to form distilled water, and is recycled to a steam stripping recycling device for treatment;
the produced water of the ammonia nitrogen removing ion exchange device enters an 8t/h deionized water device, enters a two-stage reverse osmosis system for treatment after being pretreated by a cartridge filter, enters an EDI device after being filtered by a membrane, and enters a pure water tank for recycling after being treated by the EDI device.
Examples
Table 1 shows the water quality index of the wastewater treatment raw water of the deamination tower
Serial number | Item | Water entry index (mg/L) |
1 | Ammonia nitrogen | 30 |
2 | Fluoride ion | 20-30 |
3 | Anionic surfactants | 300 |
TABLE 1
TABLE 2 index of the wastewater from the deamination tower in the ammonia nitrogen ion exchange device
Serial number | Item | Index of Water discharge (mg/L) |
1 | PH | 6-9 |
2 | Fluoride ion | ≤10 |
3 | Ammonia nitrogen | ≤10 |
4 | Total phosphorus TP | ≤4 |
5 | Total nitrogen TN | ≤10 |
6 | Anionic surfactants | ≤20 |
TABLE 2
Table 3 shows the water discharge index of the deionization apparatus
Serial number | Item | Index of water discharge (mg/L) |
1 | PH | 6-9 |
2 | Resistivity (M omega. Cm) | ≥15 |
3 | Fluoride ion | ≤1 |
4 | Ammonia nitrogen | ≤1 |
5 | Nitrate radical | ≤0.5 |
6 | Sulfate radical | ≤0.5 |
7 | Phosphate radical | ≤0.5 |
TABLE 3
According to above-mentioned 3 tables, deamination tower waste water is in the process the utility model relates to a deamination tower effluent disposal system handles the back, each item index reduces by a wide margin, and reaches the emission requirement of environmental assessment report.
The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.
Claims (7)
1. A deamination tower wastewater treatment system is characterized by comprising a raw water tank, a filtering unit, a reverse osmosis recovery system, an ammonia nitrogen ion removal exchange device and a deionized water device which are sequentially connected through pipelines, wherein the raw water tank is provided with a water inlet communicated with deamination tower wastewater, and the deionized water device is provided with a water outlet for providing water for a water consumption point;
retrieve reverse osmosis system and still have connected gradually concentrated reverse osmosis system and triple effect evaporation system through the pipeline, triple effect evaporation system passes through pipeline intercommunication strip recovery unit, strip recovery unit with concentrated reverse osmosis system all is equipped with the product water pipeline that the intercommunication former pond is used for carrying the product water.
2. The ammonia removal tower wastewater treatment system of claim 1, wherein the filtration unit comprises a bag filter and a cartridge filter which are connected with each other through a pipeline, the cartridge filter is communicated with a recovery reverse osmosis system, the bag filter is communicated with the raw water tank, and a lifting pump is further arranged on the pipeline between the raw water tank and the bag filter.
3. The ammonia-removing tower waste water treatment system as claimed in claim 1, wherein the de-ionized water device comprises a raw water tank, a cartridge filter, a primary reverse osmosis system, a primary reverse osmosis water production tank, a secondary reverse osmosis system, a secondary reverse osmosis water production tank, an EDI system and a pure water tank which are sequentially communicated through pipelines, a raw water pump is arranged on the pipeline between the raw water tank and the cartridge filter, the raw water tank is communicated with the ammonia nitrogen ion removal exchange device, and the water outlet is arranged on the pure water tank.
4. The deamination tower wastewater treatment system as claimed in claim 3, wherein the primary reverse osmosis system is provided with a first concentrated water port, the first concentrated water port is connected with a first concentrated water return pipeline, and the other end of the first concentrated water return pipeline is communicated with the raw water tank.
5. The deamination tower wastewater treatment system according to claim 3, wherein the secondary reverse osmosis system is provided with a second concentrated water port, the second concentrated water port is connected with a second concentrated water return pipeline, and the other end of the second concentrated water return pipeline is communicated with the raw water tank.
6. The deamination tower wastewater treatment system according to claim 3, wherein the EDI system is provided with a third concentrated water port, the third concentrated water port is connected with a third concentrated water return pipeline, and the other end of the third concentrated water return pipeline is communicated with the primary reverse osmosis water production tank.
7. The wastewater treatment system of the deamination tower as recited in claim 3, wherein the water outlet is communicated with a delivery pipeline for delivering pure water to a water consumption point, and a pure water pump is arranged on the delivery pipeline.
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CN202222412508.5U CN218202447U (en) | 2022-09-09 | 2022-09-09 | Wastewater treatment system of deamination tower |
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CN202222412508.5U CN218202447U (en) | 2022-09-09 | 2022-09-09 | Wastewater treatment system of deamination tower |
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