CN219279547U - Treatment system for producing wastewater from chemical fertilizer production - Google Patents
Treatment system for producing wastewater from chemical fertilizer production Download PDFInfo
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- CN219279547U CN219279547U CN202320703589.6U CN202320703589U CN219279547U CN 219279547 U CN219279547 U CN 219279547U CN 202320703589 U CN202320703589 U CN 202320703589U CN 219279547 U CN219279547 U CN 219279547U
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Abstract
The utility model relates to the technical field of wastewater treatment, in particular to a treatment system for producing wastewater from chemical fertilizer production. The utility model provides a treatment system for producing wastewater from fertilizer production, which comprises: the device comprises a desalted water wastewater recovery device, a circulating spray water device, a batching tank, a condensed water recovery tank, a waste material melting tank and a ground cleaning water recovery tank, wherein the devices or tanks are connected according to requirements. The desalted water waste water, condensed water and ground cleaning water are used as waste water which is mainly required to be treated in chemical fertilizer production enterprises, the treatment system for producing chemical fertilizer produced waste water provided by the utility model can be fully utilized, the waste water is not required to be subjected to responsible purification treatment, the treatment cost is low, the equipment is relatively simple in the treatment process, and the later maintenance cost is low. In summary, the treatment system for producing wastewater from fertilizer provided by the utility model reduces wastewater treatment cost of chemical enterprises producing fertilizer, and reduces later maintenance cost of the wastewater treatment system.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment, in particular to a treatment system for producing wastewater from chemical fertilizer production.
Background
The process of producing fertilizers can produce large amounts of wastewater, such as: concentrated water in the process of preparing desalted water, and backwash water generated by equipment for preparing desalted water and wastewater on the floor of a production workshop. In general, chemical enterprises process wastewater by utilizing the characteristics of chemical substances to perform complex processes such as adsorption, membrane filtration, sedimentation and the like, so that various chemical components in the wastewater generated in the production process reach the emission standard. The treatment is usually high in one-time investment, and the later operation and maintenance cost is high. At present, aiming at chemical enterprises producing fertilizers, the traditional wastewater treatment method is adopted, so that the investment is huge, the later maintenance cost is high, and useful components in wastewater cannot be utilized.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to overcome the defects that the traditional wastewater treatment method is adopted by chemical enterprises producing fertilizer in the prior art, the investment is huge and the later maintenance cost is high, thereby providing a treatment system for wastewater generated by producing fertilizer.
The utility model provides a treatment system for producing wastewater from fertilizer production, which comprises:
a desalted water wastewater recovery device having a first desalted water wastewater outlet and a second desalted water wastewater outlet; the circulating spray water device is provided with a first circulating spray water inlet, a second circulating spray water inlet and a circulating spray water outlet; the batching pond is provided with a first batching water inlet and a second batching water inlet;
the first desalted water waste water outlet is connected with the first circulating spray water inlet, the second desalted water waste water outlet is connected with the first ingredient water inlet, and the circulating spray water outlet is connected with the second ingredient water inlet;
the condensate water recovery tank is provided with a first condensate water outlet and a second condensate water outlet; the waste material melting tank is provided with a first waste material melting water inlet and a second waste material melting water inlet; the water outlet of the ground cleaning water recovery tank is connected with the first waste material melting water inlet;
the first condensate water outlet is communicated with the second circulating spray water inlet; the second condensate water outlet is connected with the second waste material melting water inlet.
Optionally, the batching pond is a calcium-magnesium fertilizer batching pond.
The first desalted water wastewater outlet and the second desalted water wastewater outlet are arranged on a desalted water concentrated water recovery tank;
the desalted water backwash water recovery tank is provided with a first desalted water backwash water outlet and a second desalted water backwash water outlet; the first desalted water backwash water outlet is connected with a water inlet of the desalted water concentrated water recovery tank;
the treatment system further comprises a displacement water basin;
the circulating spray water device is also provided with a third circulating spray water inlet;
the second desalted water backwash water outlet is connected with the water inlet of the replacement water tank;
and the water outlet of the replacement water tank is connected with the water inlet of the third circulating spray water.
In the use process of the treatment system, when the concentration of chloride ions in the circulating spray water device is more than 500PPM, or the concentration of calcium ions is more than 50mmol/l, or the concentration of magnesium ions is more than 50mmol/l, adding water in a condensed water recovery tank, or adding water in a desalted water wastewater recovery device, or adding water in a replacement water tank to reduce the impurity concentration of the circulating spray water.
Preferably, the desalted water wastewater recovery device comprises a desalted water backwash water recovery tank and a desalted water concentrated water recovery tank.
Preferably, a cooling device is arranged between the first condensate water outlet and the second circulating spray water inlet.
Preferably, the cooling device is a water cooling tower.
Preferably, the waste material recycling device further comprises a waste material filtering device, wherein a feed inlet of the waste material filtering device is connected with a water outlet of the waste material melting tank.
Preferably, the waste filtering device is a filter press.
Preferably, the filter press further comprises an evaporation device, and a feed inlet of the evaporation device is connected with a filtrate outlet of the filter press.
Preferably, the evaporation device comprises a vapor condensation recovery device.
Preferably, the water outlet of the steam condensation recovery device is connected with the water inlet of the condensate recovery tank.
Preferably, the waste material melting tank comprises a heating device.
The technical scheme of the utility model has the following advantages:
the utility model provides a treatment system for producing wastewater generated by chemical fertilizer production, which comprises: a desalted water wastewater recovery device having a first desalted water wastewater outlet and a second desalted water wastewater outlet; the circulating spray water device is provided with a first circulating spray water inlet, a second circulating spray water inlet and a circulating spray water outlet; the batching pond is provided with a first batching water inlet and a second batching water inlet; the first desalted water waste water outlet is connected with the first circulating spray water inlet, the second desalted water waste water outlet is connected with the first ingredient water inlet, and the circulating spray water outlet is connected with the second ingredient water inlet; the condensate water recovery tank is provided with a first condensate water outlet and a second condensate water outlet; the waste material melting tank is provided with a first waste material melting water inlet and a second waste material melting water inlet; the water outlet of the ground cleaning water recovery tank is connected with the first waste material melting water inlet; the first condensate water outlet is communicated with the second circulating spray water inlet; the second condensate water outlet is connected with the second waste material melting water inlet.
The spray water in the circulating spray water device can gradually decrease due to evaporation in use, meanwhile, the solute concentration in the spray water can increase (the concentration of calcium and magnesium ions increases), when the water quantity is reduced to a certain degree or the concentration of the solute is increased to a certain degree, part of spray water needs to be replaced, and new spray water is added for supplementing. The spray water with the increased solute concentration can be used as the batching water of the batching pond, and meanwhile, the wastewater in the desalted water wastewater recovery device can be used as the supplementing water to supplement the spray water of the circulating spray water device. The water in the desalted wastewater recovery tank can be used as the batching water in the batching tank. The water quality in the condensed water recovery tank is relatively good, and the condensed water can also be used as the supplementing water of the spray water of the circulating spray water device. The surface of a workshop in the fertilizer production has the scattering of finished products, the surface cleaning water contains a large amount of fertilizer finished products, the fertilizer can directly enter a waste material melting tank for use, and meanwhile, the water in the condensed water recovery tank can also be used as material melting water of the waste material melting tank. The desalted water waste water, condensed water and ground cleaning water are used as waste water which is mainly required to be treated in chemical fertilizer production enterprises, the treatment system for producing chemical fertilizer produced waste water provided by the utility model can be fully utilized, the waste water is not required to be subjected to responsible purification treatment, the treatment cost is low, the equipment is relatively simple in the treatment process, and the later maintenance cost is low.
In summary, the treatment system for producing wastewater from fertilizer provided by the utility model reduces wastewater treatment cost of chemical enterprises producing fertilizer, and reduces later maintenance cost of the wastewater treatment system.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a system for treating wastewater from fertilizer production in accordance with the present utility model.
Reference numerals illustrate:
a desalted water wastewater recovery device 10; a desalted water backwash water recovery tank 101; a desalted water concentrated water recovery tank 102; a first desalted water waste water outlet 103, a second desalted water waste water outlet 104; a first desalinated water backwash water outlet 105 and a second desalinated water backwash water outlet 106; a batching pool 20; a first ingredient water inlet 201; a second ingredient water inlet 202; a circulating shower water device 30; a first circulation shower water inlet 301; a second circulation shower water inlet 302; a circulating shower water outlet 303; a third cycle spray water inlet 304; a condensate water recovery tank 40; a first condensate water outlet 401; a second condensate outlet 402; a ground cleaning water recovery tank 50; a waste material melting tank 60; a first waste material inlet 601; a second scrap conversion inlet 602; a cooling device 70; a waste filtering device 80; a waste filtering device 80; an evaporation device 90; replacing the water basin 100.
Detailed Description
The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.
Examples
A treatment system for producing wastewater from fertilizer production, see fig. 1, comprising: a desalted water wastewater recovery apparatus 10, said desalted water wastewater recovery apparatus 10 having a first desalted water wastewater outlet 103 and a second desalted water wastewater outlet 104; a circulating spray water device 30, the circulating spray water device 30 having a first circulating spray water inlet 301, a second circulating spray water inlet 302 and a circulating spray water outlet 303; a batch tank 20, said batch tank 20 having a first batch water inlet 201 and a second batch water inlet 202; the first desalted water waste water outlet 103 is connected with the first circulating spray water inlet 301, the second desalted water waste water outlet 104 is connected with the first ingredient water inlet 201, and the circulating spray water outlet 303 is connected with the second ingredient water inlet 202; a condensate recovery tank 40, the condensate recovery tank 40 having a first condensate outlet 401 and a second condensate outlet 402; a reject-material pond 60, the reject-material pond 60 having a first reject-material inlet 601 and a second reject-material inlet 602; a ground cleaning water recovery tank 50, wherein a water outlet of the ground cleaning water recovery tank 50 is connected with the first waste material water inlet 601; the first condensate water outlet 401 is communicated with the second circulating spray water inlet 302; the second condensate water outlet 402 is connected to the second waste water inlet 602.
The spray water in the circulating spray water device 30 gradually decreases due to evaporation in use, and simultaneously the solute concentration in the spray water increases (the concentration of calcium and magnesium ions increases), when the water quantity decreases to a certain degree or the solute concentration increases to a certain degree, part of the spray water needs to be replaced, and new spray water is added to supplement. The spray water having the increased solute concentration may be used as the ingredient water of the ingredient tank 20, while the wastewater in the desalted water wastewater recovery device 10 may be used as the make-up water to supplement the spray water of the circulating spray water device 30. The water in the desalted water wastewater recovery apparatus 10 can be used as the ingredient water of the ingredient pool 20 as well. The water in the condensate recovery tank 40 is of relatively good quality and may also be used as make-up water for the shower water of the circulating shower water apparatus 30. The surface of a workshop in the fertilizer production has the scattering of finished products, a large amount of fertilizer finished products are contained in the surface cleaning water, the fertilizer finished products can directly enter the waste material melting tank 60 for use, and meanwhile, the water in the condensed water recovery tank 40 can also be used as the material melting water of the waste material melting tank 60. The desalted water waste water, condensed water and ground cleaning water are used as waste water which is mainly required to be treated in chemical fertilizer production enterprises, the treatment system for producing the waste water by using the chemical fertilizer provided by the utility model can be fully utilized, the waste water does not need to be subjected to purification treatment with high cost, the zero emission treatment of the waste water can be realized, the treatment cost is lower, the equipment is relatively simple in the treatment process, and the later maintenance cost is lower.
In summary, the treatment system for producing wastewater from fertilizer provided by the utility model reduces the wastewater treatment cost of chemical enterprises producing fertilizer, reduces the later maintenance cost of the wastewater treatment system, and realizes zero discharge treatment of wastewater.
In one embodiment of the present utility model, the ingredient pool 20 is a calcium magnesium fertilizer ingredient pool.
In the use process, the spray water in the circulating spray water device 30 can gradually decrease due to evaporation in use, the concentration of calcium and magnesium ions in the spray water can be increased, and the spray water with the increased concentration of calcium and magnesium ions can be used as the batching water of the calcium-magnesium fertilizer batching pond.
In this embodiment, the desalted water wastewater recovery apparatus 10 includes a desalted water backwash water recovery tank 101 and a desalted water concentrate recovery tank 102; the first desalted water waste water outlet 103 and the second desalted water waste water outlet 104 are arranged on the desalted water concentrated water recovery tank 102; the desalted water backwash water recovery tank 101 has a first desalted water backwash water outlet 105 and a second desalted water backwash water outlet 106; the first desalted water backwash water outlet 105 is connected with a water inlet of the desalted water concentrated water recovery tank 102; the treatment system further includes a displacement water basin 100; the circulating spray water device 30 also has a third circulating spray water inlet 304; the second desalted water backwash water outlet 106 is connected with the water inlet of the replacement water tank; the water outlet of the replacement water tank 100 is connected with the third circulation shower water inlet 304.
The desalted water concentrated water is generated in the process of preparing the desalted water and enters the desalted water concentrated water recovery tank 102; the filtering membrane used for preparing desalted water needs to be cleaned periodically, and desalted water backwash water generated in the process of cleaning the filtering membrane is discharged into the desalted water backwash water recovery tank 101. The desalted water concentrate and the desalted water backwash water contain a large amount of calcium and magnesium ions needed in the fertilizer, so that the desalted water concentrate and the desalted water backwash water can be used for the subsequent proportioning of the calcium and magnesium fertilizer; and because the mass concentration of the solute of the desalted water concentrated water and the desalted water backwash water is lower than the maximum standard of the spray water concentration in the circulating spray water apparatus 30 (the maximum standard of the spray water concentration is that chloride ion is 500PPM, and calcium and magnesium ions are both 50 mmol/L), the desalted water concentrated water and the desalted water backwash water can be combined and discharged as the replacement water of the spray water in the circulating spray water apparatus 30.
The desalted water backwash water may also be fed into the displacement water tank 100, and water is added to the circulating spray water apparatus 30 by the displacement water tank 100 when the circulating spray water apparatus 30 needs to displace water.
In other embodiments, the desalinated water wastewater recovery device 10 may share a common basin for desalinated concentrate and desalinated backwash water.
In this embodiment, a cooling device 70 is disposed between the first condensed water outlet 401 and the second circulating spray water inlet 302. The condensate water in the condensate water recovery tank 40 has better quality, the calcium ion content is less than 0.05mmol/L, the magnesium ion content is less than 0.1mmol/L, and the condensate water can be used as the replacement water of the spray water in the circulating spray water device 30, but when the temperature of the condensate water is higher, such as 50-70 ℃, the condensate water is directly used as the spray water in the circulating spray water device, the water temperature is higher, the spraying effect is weaker, and therefore, the condensate water can be treated by the cooling device 70 when being injected into the circulating spray water device.
In this embodiment, the cooling device 70 is a water cooling tower.
In this embodiment, the treatment system further comprises a waste filtering device 80, wherein a feed inlet of the waste filtering device 80 is connected with a water outlet of the waste melting tank 60. The waste material melting tank 60 is used for recycling ground cleaning water, solutes in the ground cleaning water mainly comprise fertilizer finished products scattered on the ground, but also comprise insoluble impurities, the waste material melting tank can also be used for dissolving raw materials for producing fertilizers, and feed liquid in the waste material melting tank needs to be filtered.
In this embodiment, the waste filter device 80 is a filter press.
In this embodiment, the treatment system further comprises an evaporation device 90, and a feed inlet of the evaporation device 90 is connected to a filtrate outlet of the filter press. The waste filter 80 can be used to produce fertilizer products, which are usually sold in solid form, so that the filtrate passing through the waste filter 80 needs to be evaporated and concentrated, and then granulated to obtain fertilizer products. In the present embodiment, the evaporation device 90 includes an evaporator and a vapor condensation recovery device. The condensed water is recovered by the condensation recovery device.
In this embodiment, the water outlet of the steam condensation recovery device is connected to the water inlet of the condensate recovery tank.
In this embodiment, the waste material tank includes a heating device therein. Part of water sources in the waste material melting tank are condensed water in the condensed water recovery tank, the water temperature of the condensed water is higher, and a heating device is needed to raise the material temperature in the waste material melting tank in order to accelerate the material melting speed. In this embodiment, the heating device is a resistive heater, and in other embodiments, the heating device may be another heating device.
In summary, the desalted water wastewater (including concentrated water and backwash water) generated in the process of preparing desalted water is recovered by the desalted water wastewater recovery device 10 because of relatively good water quality, and can be used as the replenishing water of the circulating spray water device 30 and also can be used as the batching water of the batching pond 20; the water in the circulating spray water device 30 can be largely evaporated in the use process, the impurity content in the residual water can be gradually increased, and the water in the circulating spray water device 30 can be used for the batching water of the batching pool 20 after exceeding the set standard; a large amount of water vapor generated in the production process of enterprises is condensed and then enters the condensed water recovery tank 40 for recovery, and water in the condensed water recovery tank 40 can be directly used as material dissolving water of the waste material dissolving tank 60; because the impurity content in the condensed water is low, the water in the condensed water recovery tank 40 can be used as the supplementary water of the circulating spray water device 30 after being processed by the cooling device 70; in the ground cleaning process, chemical fertilizers scattered on the ground are dissolved in ground cleaning water, the ground cleaning water is recovered by the ground cleaning water recovery tank 50, and the ground cleaning water can enter the waste material melting tank 60 to be used as melting water; after the impurities in the water in the waste material melting tank 60 are removed by the waste material filtering device 80, the obtained filtrate is evaporated by the evaporating device 90 to prepare a qualified product again, so that the treatment system for producing the chemical fertilizer generated waste water can be fully utilized, the waste water does not need to be subjected to high-cost purification treatment, the zero discharge treatment of the waste water can be realized, the treatment cost is lower, the equipment in the treatment process is relatively simple, and the later maintenance cost is lower.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (10)
1. A system for treating wastewater from fertilizer production, comprising:
a desalted water wastewater recovery device having a first desalted water wastewater outlet and a second desalted water wastewater outlet; the circulating spray water device is provided with a first circulating spray water inlet, a second circulating spray water inlet and a circulating spray water outlet; the batching pond is provided with a first batching water inlet and a second batching water inlet;
the first desalted water waste water outlet is connected with the first circulating spray water inlet, the second desalted water waste water outlet is connected with the first ingredient water inlet, and the circulating spray water outlet is connected with the second ingredient water inlet;
the condensate water recovery tank is provided with a first condensate water outlet and a second condensate water outlet; the waste material melting tank is provided with a first waste material melting water inlet and a second waste material melting water inlet; the water outlet of the ground cleaning water recovery tank is connected with the first waste material melting water inlet;
the first condensate water outlet is communicated with the second circulating spray water inlet; the second condensate water outlet is connected with the second waste material melting water inlet.
2. The treatment system of claim 1, wherein the desalinated water wastewater recovery device comprises a desalinated water backwash water recovery tank and a desalinated water concentrate recovery tank;
the first desalted water wastewater outlet and the second desalted water wastewater outlet are arranged on a desalted water concentrated water recovery tank;
the desalted water backwash water recovery tank is provided with a first desalted water backwash water outlet and a second desalted water backwash water outlet; the first desalted water backwash water outlet is connected with a water inlet of the desalted water concentrated water recovery tank;
the treatment system further comprises a displacement water basin;
the circulating spray water device is also provided with a third circulating spray water inlet;
the second desalted water backwash water outlet is connected with the water inlet of the replacement water tank;
and the water outlet of the replacement water tank is connected with the water inlet of the third circulating spray water.
3. The treatment system of claim 1, wherein a cooling device is disposed between the first condensate water outlet and the second circulating spray water inlet.
4. A treatment system according to claim 3, wherein the cooling device is a water cooling tower.
5. The treatment system of claim 1, further comprising a waste filter device, a feed port of the waste filter device being connected to a water outlet of the waste reservoir.
6. The treatment system of claim 5, wherein the waste filter device is a filter press.
7. The treatment system of claim 6, further comprising an evaporation device, wherein a feed port of the evaporation device is connected to a filtrate outlet of the filter press.
8. The treatment system of claim 7, wherein the evaporation device comprises a vapor condensation recovery device.
9. The treatment system of claim 8, wherein the water outlet of the vapor condensation recovery device is connected to the water inlet of the condensate recovery tank.
10. The treatment system of claim 1, wherein the waste material pond includes a heating device therein.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320703589.6U CN219279547U (en) | 2023-03-30 | 2023-03-30 | Treatment system for producing wastewater from chemical fertilizer production |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320703589.6U CN219279547U (en) | 2023-03-30 | 2023-03-30 | Treatment system for producing wastewater from chemical fertilizer production |
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