CN215798981U - Leachate concentrated water disposal system device - Google Patents
Leachate concentrated water disposal system device Download PDFInfo
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- CN215798981U CN215798981U CN202121557635.3U CN202121557635U CN215798981U CN 215798981 U CN215798981 U CN 215798981U CN 202121557635 U CN202121557635 U CN 202121557635U CN 215798981 U CN215798981 U CN 215798981U
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Abstract
A percolate concentrated water treatment system device comprises an evaporator; the flue gas outlet of the combustor is connected with the flue gas inlet of the evaporator; the water inlet system comprises a pH adjusting tank and a water inlet tank, wherein the pH adjusting tank is provided with a percolate concentrated water inlet, a concentrated water outlet of the pH adjusting tank is connected with a concentrated water inlet of the water inlet tank, and a concentrated water outlet of the water inlet tank is connected with a concentrated water inlet of the evaporator; the flue gas treatment system comprises a separation tower, a condensation tower and a mechanical ventilation cooling tower, wherein a flue gas inlet of the separation tower is connected with a flue gas outlet of an evaporator, a flue gas inlet of the condensation tower is connected with a flue gas outlet of the separation tower, and a cooling water inlet of the condensation tower is connected with a cooling water outlet of the mechanical ventilation cooling tower; concentrated solution processing system, including subsider and mud storehouse, the concentrated solution entry of subsider and the concentrated solution exit linkage in evaporimeter, the salt mud export of subsider and the salt mud entry linkage in mud storehouse.
Description
Technical Field
The utility model belongs to the technical field of concentrated water evaporation of percolate, and particularly relates to a concentrated water treatment system device of percolate.
Background
A large amount of leachate is generated in a waste incineration power plant every day, the leachate is concentrated into leachate concentrated water through an anaerobic system, an aerobic system and a membrane system, and the concentrated water has the characteristics of high salt, high viscosity and easiness in crystallization. The existing treatment modes of the concentrated water comprise a back-spraying hearth, lime slurry preparation and the like, the back-spraying easily causes hearth corrosion and coking, and the risk of pollutant transfer exists in the lime slurry preparation. Therefore, there is a need to develop a process scheme suitable for disposing the concentrated water in the waste incineration plant.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problems, the present invention provides the following technical solutions
A percolate concentrated water treatment system device comprises a water tank,
an evaporator;
the flue gas outlet of the combustor is connected with the flue gas inlet of the evaporator;
the water inlet system comprises a pH adjusting tank and a water inlet tank, wherein the pH adjusting tank is provided with a percolate concentrated water inlet, a concentrated water outlet of the pH adjusting tank is connected with a concentrated water inlet of the water inlet tank, and a concentrated water outlet of the water inlet tank is connected with a concentrated water inlet of the evaporator;
the flue gas treatment system comprises a separation tower, a condensation tower and a mechanical draft cooling tower, wherein a flue gas inlet of the separation tower is connected with a flue gas outlet of the evaporator, a flue gas inlet of the condensation tower is connected with a flue gas outlet of the separation tower, and a cooling water inlet of the condensation tower is connected with a cooling water outlet of the mechanical draft cooling tower;
concentrated solution processing system, including subsider and mud storehouse, the concentrated solution entry of subsider with the concentrated solution exit linkage of evaporimeter, the salt mud export of subsider and the salt mud entry linkage in mud storehouse.
Further, a fuel inlet of the burner is connected with a biogas outlet of the anaerobic fermentation tank.
Furthermore, a desulfurizing tower, a biogas dehydrator and a biogas bag are arranged between the anaerobic fermentation tank and the burner, a biogas outlet of the anaerobic fermentation tank is connected with an air inlet of the desulfurizing tower, an air outlet of the desulfurizing tower is connected with an air inlet of the biogas dehydrator, an air outlet of the biogas dehydrator is connected with an air inlet of the biogas bag, and an air outlet of the biogas bag is connected with a fuel inlet of the burner.
Further, a gas fan is arranged between the methane bag and the combustor and used for pumping methane in the methane bag into the combustor.
Further, an air fan is arranged at an air inlet of the combustor.
Further, a first water pump is arranged on a concentrated water pipeline between the pH adjusting tank and the water inlet tank; and a second water pump is arranged on a concentrated water pipeline between the water inlet tank and the evaporator.
Furthermore, a wire mesh demister is also arranged in the separation tower.
Furthermore, a third water pump is further arranged on a connecting pipeline between a cooling water inlet of the condensing tower and a cooling water outlet of the mechanical draft cooling tower.
Furthermore, a condensed water outlet of the condensing tower passes through a fourth water pump and then is connected with a water inlet to be cooled of the mechanical ventilation cooling tower.
Furthermore, a salt mud pump is arranged on a salt mud pipeline between the settling tank and the sludge bin.
The utility model has the beneficial effects that:
(1) the water inlet system can effectively prevent ammonia nitrogen from volatilizing in the evaporation process by adjusting the pH value of the concentrated water, ensure that condensed water is discharged up to the standard, improve the ionization degree of calcium and magnesium ions in the concentrated water, reduce scaling risk and improve the concentration rate of equipment by adjusting the concentrated water to be weakly acidic;
(2) flue gas processing system: and under the condition of recovering the condensed water in the flue gas, the cooling water is recycled, and the economic benefit of the system is improved. On the other hand, the non-condensable gas can be directly used as inlet air of a waste incineration plant, the waste heat of the flue gas after heat exchange is fully utilized, and the economic benefit of the system is improved;
(3) the biogas generated by the anaerobic fermentation tank is used as fuel, and after the biogas is desulfurized and dehydrated, the heat value is improved, thereby being beneficial to the combustion stability and improving the economic benefit of the system;
(4) after the concentrated water enters the water inlet tank, a medicament is added into the water inlet tank for defoaming, so that foam entrainment of the concentrated solution in the evaporation process can be prevented;
(5) and a wire mesh demister is used in the separation tower, so that the gas-liquid separation effect is further improved.
Drawings
Fig. 1 is a schematic structural diagram of a percolate concentrated water treatment system device of the utility model.
Description of reference numerals: 1. the system comprises an evaporator, 2, a combustor, 21, an air fan, 3, a water inlet system, 31, a pH adjusting tank, 32, a water inlet tank, 33, a first water pump, 34, a second water pump, 4, a flue gas treatment system, 41, a separation tower, 411, a silk screen demister, 42, a condensation tower, 43, a mechanical ventilation cooling tower, 44, a third water pump, 45, a fourth water pump, 5, a concentrated solution treatment system, 51, a settling tank, 52, a sludge bin, 53, a salt mud pump, 6, an anaerobic fermentation tank, 61, a desulfurization tower, 62, a biogas dehydrator, 63, a biogas bag, 64 and a gas fan.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Example 1
A percolate concentrated water treatment system device is shown in figure 1 and comprises,
the evaporator 1 is an incineration heat exchange device which utilizes the direct contact of high-temperature flue gas and percolate concentrated water to ensure that concentrated liquid absorbs heat and evaporates;
the flue gas outlet of the combustor 2 is connected with the flue gas inlet of the evaporator 1, fuel is combusted in the combustor 2 to release heat, and the generated high-temperature flue gas is conveyed into the evaporator 1;
the water inlet system 3 comprises a pH adjusting tank 31 and a water inlet tank 32, wherein the pH adjusting tank 31 is provided with a percolate concentrated water inlet, percolate concentrated water is added into the pH adjusting tank 31 through the percolate concentrated water inlet, sulfuric acid is added into the pH adjusting tank 31 to adjust the pH value to weak acidity, volatilization of ammonia nitrogen in the evaporation process is prevented, and on the other hand, the water inlet system is simple in structure, convenient to operate and high in efficiency. The ionization degree of calcium and magnesium ions in the concentrated water can be improved, the scaling risk is reduced, and the concentration rate is improved; a concentrated water outlet of the pH adjusting tank 31 is connected with a concentrated water inlet of the water inlet tank 32, and after the concentrated water enters the water inlet tank 32, a medicament is added into the water inlet tank 32 for defoaming, so that the entrainment of concentrated solution foam in the evaporation process can be prevented; a concentrated water outlet of the water inlet tank 32 is connected with a concentrated water inlet of the evaporator 1, so that concentrated water enters the evaporator 1;
the flue gas treatment system 4 comprises a separation tower 41, a condensation tower 42 and a mechanical draft cooling tower 43, wherein a flue gas inlet of the separation tower 41 is connected with a flue gas outlet of the evaporator 1, a flue gas inlet of the condensation tower 42 is connected with a flue gas outlet of the separation tower 41, and a cooling water inlet of the condensation tower 42 is connected with a cooling water outlet of the mechanical draft cooling tower 43;
concentrated solution processing system 5, including subsider 51 and mud storehouse 52, the concentrated solution entry of subsider 51 is connected with the concentrated solution exit linkage of evaporimeter 1, and the salt mud export of subsider 51 is connected with the salt mud entry of mud storehouse 52.
The fuel inlet of the burner 2 is connected with the biogas outlet of the anaerobic fermentation tank 6, and the burner 2 uses the biogas generated by the anaerobic fermentation tank 6 as fuel.
A desulfurizing tower 61, a biogas dehydrator 62 and a biogas bag 63 are further arranged between the anaerobic fermentation tank 6 and the combustor 2, a biogas outlet of the anaerobic fermentation tank 6 is connected with a gas inlet of the desulfurizing tower 61, a gas outlet of the desulfurizing tower 61 is connected with a gas inlet of the biogas dehydrator 62, a gas outlet of the biogas dehydrator 62 is connected with a gas inlet of the biogas bag 63, a gas outlet of the biogas bag 63 is connected with a fuel inlet of the combustor 2, biogas generated by the anaerobic fermentation tank 6 is sequentially desulfurized and dehydrated and then enters the biogas bag 63 to be stored, and the biogas is transmitted to the evaporator 1 from the biogas bag 63 during use.
And a gas fan 64 is also arranged between the biogas bag 63 and the combustor 2, and the gas fan 64 is used for pumping biogas in the biogas bag 63 into the combustor 2 so as to improve the transportation rate and transportation volume of the biogas.
The air inlet of the combustor 2 is also provided with an air fan 21, so that the pumping amount of air is increased, and the combustion efficiency is improved.
A first water pump 33 is arranged on a concentrated water pipeline between the pH adjusting tank 31 and the water inlet tank 32 and used for lifting the concentrated water in the pH adjusting tank 31 to the water inlet tank 32; a second water pump 34 is arranged on the concentrated water pipeline between the water inlet tank 32 and the evaporator 1 and is used for lifting the concentrated water in the water inlet tank 32 to the evaporator 1.
A wire mesh demister 411 is further arranged in the separation tower 41, the wire mesh demister 411 is used for assisting gas-liquid separation, and entrained mist can be removed through a wire pad of the demister by gas.
A third water pump 44 is also arranged on a connecting pipeline between the cooling water inlet of the condensing tower 42 and the cooling water outlet of the mechanical draft cooling tower 43.
And a condensed water outlet of the condensing tower 42 is connected with a water inlet to be cooled of the mechanical ventilation cooling tower 43 after passing through a fourth water pump 45, and the condensed water is added into the mechanical ventilation cooling tower 43 to continue cooling, so that the purpose of recycling is achieved.
A salt mud pump 53 is also arranged on the salt mud pipeline between the settling tank 51 and the sludge bin 52, and the salt mud in the settling tank 51 is pumped into the sludge bin 52.
When the system is used, leachate concentrated water is added into the pH adjusting tank 31, sulfuric acid is added into the pH adjusting tank 31 to enable the concentrated water to be weakly acidic, the concentrated water is pumped into the water inlet tank 32 by the water pump 33, a medicament is added into the water inlet tank 32 for defoaming, and then the leachate concentrated water is pumped into the evaporator 1 by the water pump 33; the anaerobic fermentation tank 6 generates biogas through anaerobic fermentation, the biogas enters a biogas bag 63 for standby after passing through a desulfurizing tower 61 and a biogas dehydrator 62, when the biogas is used, the biogas in the biogas bag 63 is added into the combustor 2 to be combusted under the action of a gas fan 64, air is added by an air fan 21 in the combustion process, high-temperature flue gas generated by biogas combustion is transmitted into the evaporator 1 to exchange heat, and percolate concentrated water is contacted with the high-temperature flue gas to absorb heat and evaporate; the evaporated steam and the residual flue gas enter the flue gas treatment system 4 for treatment, the evaporated steam and the residual flue gas enter the separation tower 41 for gas-liquid separation, the wire mesh demister 411 in the separation tower 41 can also perform auxiliary gas-liquid separation to enhance the separation effect, the separated liquid falls back, the gas enters the condensation tower 42 for condensation, cooling water in the condensation tower 42 comes from the mechanical draft cooling tower 43, the gas is condensed by the cooling water to form condensed water with lower temperature, the condensed water is added into the mechanical draft cooling tower 43 through a pipeline for continuous cooling, and the condensed water with lower temperature reduces the energy consumption of the mechanical draft cooling tower 43 for cooling; and the concentrated solution left after the concentrated water in the evaporator 1 is evaporated enters a settling tank 51 for settling, and the salt mud obtained by settling is pumped into a mud bin 52 by a salt mud pump 53 for subsequent use.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A leachate concentrated water treatment system device is characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
an evaporator (1);
the flue gas outlet of the burner (2) is connected with the flue gas inlet of the evaporator (1);
the water inlet system (3) comprises a pH adjusting tank (31) and a water inlet tank (32), wherein the pH adjusting tank (31) is provided with a percolate concentrated water inlet, a concentrated water outlet of the pH adjusting tank (31) is connected with a concentrated water inlet of the water inlet tank (32), and a concentrated water outlet of the water inlet tank (32) is connected with a concentrated water inlet of the evaporator (1);
the flue gas treatment system (4) comprises a separation tower (41), a condensation tower (42) and a mechanical draft cooling tower (43), wherein a flue gas inlet of the separation tower (41) is connected with a flue gas outlet of the evaporator (1), a flue gas inlet of the condensation tower (42) is connected with a flue gas outlet of the separation tower (41), and a cooling water inlet of the condensation tower (42) is connected with a cooling water outlet of the mechanical draft cooling tower (43);
concentrated solution processing system (5), including subsider (51) and mud storehouse (52), the concentrate entry of subsider (51) with the concentrate exit linkage of evaporimeter (1), the salt mud export of subsider (51) and the salt mud entry linkage in mud storehouse (52).
2. The leachate concentrate disposal system apparatus of claim 1, wherein: the fuel inlet of the burner (2) is connected with the biogas outlet of the anaerobic fermentation tank (6).
3. The leachate concentrate disposal system apparatus of claim 2, wherein: the anaerobic fermentation tank (6) and still be equipped with desulfurizing tower (61), marsh gas dehydrator (62) and marsh gas package (63) between combustor (2), the marsh gas export of anaerobic fermentation tank (6) with the air inlet of desulfurizing tower (61) is connected, the gas outlet of desulfurizing tower (61) with the air inlet of marsh gas dehydrator (62) is connected, the gas outlet of marsh gas dehydrator (62) with the air inlet of marsh gas package (63) is connected, the gas outlet of marsh gas package (63) with the fuel entry linkage of combustor (2).
4. The leachate concentrate disposal system apparatus of claim 3, wherein: and a gas fan (64) is also arranged between the biogas bag (63) and the combustor (2), and the gas fan (64) is used for pumping biogas in the biogas bag (63) into the combustor (2).
5. The leachate concentrate disposal system apparatus of claim 1, wherein: an air blower (21) is also arranged at the air inlet of the burner (2).
6. The leachate concentrate disposal system apparatus of claim 1, wherein: a first water pump (33) is arranged on a concentrated water pipeline between the pH adjusting tank (31) and the water inlet tank (32); and a second water pump (34) is arranged on a concentrated water pipeline between the water inlet tank (32) and the evaporator (1).
7. The leachate concentrate disposal system apparatus of claim 1, wherein: a wire mesh demister (411) is also arranged in the separation tower (41).
8. The leachate concentrate disposal system apparatus of claim 1, wherein: and a third water pump (44) is also arranged on a connecting pipeline between a cooling water inlet of the condensing tower (42) and a cooling water outlet of the mechanical ventilation cooling tower (43).
9. The leachate concentrate disposal system apparatus of claim 1, wherein: and a condensed water outlet of the condensing tower (42) is connected with a water inlet to be cooled of the mechanical ventilation cooling tower (43) after passing through a fourth water pump (45).
10. The leachate concentrate disposal system apparatus of claim 1, wherein: and a salt mud pump (53) is also arranged on a salt mud pipeline between the settling tank (51) and the sludge bin (52).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121557635.3U CN215798981U (en) | 2021-07-09 | 2021-07-09 | Leachate concentrated water disposal system device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121557635.3U CN215798981U (en) | 2021-07-09 | 2021-07-09 | Leachate concentrated water disposal system device |
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| Publication Number | Publication Date |
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| CN215798981U true CN215798981U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121557635.3U Active CN215798981U (en) | 2021-07-09 | 2021-07-09 | Leachate concentrated water disposal system device |
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| CN (1) | CN215798981U (en) |
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2021
- 2021-07-09 CN CN202121557635.3U patent/CN215798981U/en active Active
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