CN215855319U - Cooling tower-biological filter combined MVR steam treatment system - Google Patents
Cooling tower-biological filter combined MVR steam treatment system Download PDFInfo
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- CN215855319U CN215855319U CN202122615956.0U CN202122615956U CN215855319U CN 215855319 U CN215855319 U CN 215855319U CN 202122615956 U CN202122615956 U CN 202122615956U CN 215855319 U CN215855319 U CN 215855319U
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Abstract
The utility model relates to the field of wastewater treatment, in particular to a cooling tower-biological filter combined MVR steam treatment system. The device comprises a cooling tower and a biological filter, wherein MVR steam enters the biological filter for continuous treatment after being treated by the cooling tower; the cooling tower sequentially comprises a water meter, a heat exchanger, a packing layer and a refrigerating fluid collecting tank from top to bottom; the water meter comprises a plurality of water meter devices, wherein a plurality of water meter devices are arranged in parallel up and down, heat exchangers are distributed among the water meter devices, the heat exchangers are coil type heat exchangers, and the coil type heat exchangers are communicated. This system can reprocess to MVR steam, guarantees up to standard that MVR steam discharged, prevents the emission of foul gas.
Description
Technical Field
The utility model relates to the field of wastewater treatment, in particular to a cooling tower-biological filter combined MVR steam treatment system.
Background
The information in this background section is only for enhancement of understanding of the general background of the utility model and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
Leachate produced by engineering in a waste incineration plant is generally treated by an MVR mechanical evaporation system to produce a concentrated solution and MVR steam. In the process of treating the landfill leachate by an evaporation method to separate volatile components from non-volatile components, the fulvic acid and humic acid substances of macromolecules separated by evaporation are remained in the concentrated solution, and the MVR steam contains a small amount of micromolecular organic matters, ammonia nitrogen and heavy metal ions. In order to ensure the MVR steam emission to reach the standard and prevent the emission of malodorous gas, the reasonable structure is needed to realize the manufacture and inspection of equipment, and the use is ensured to be convenient and reliable.
SUMMERY OF THE UTILITY MODEL
The utility model provides a cooling tower-biological filter combined MVR steam treatment system, which can be used for retreating MVR steam, ensuring that the MVR steam discharge reaches the standard and preventing the emission of malodorous gas.
In order to realize the aim, the utility model provides a cooling tower-biological filter combined MVR steam treatment system, which comprises a cooling tower and a biological filter, wherein MVR steam enters the biological filter for continuous treatment after being treated by the cooling tower;
the cooling tower sequentially comprises a water meter, a heat exchanger, a packing layer and a refrigerating fluid collecting tank from top to bottom;
the water meter comprises a plurality of water meter devices, wherein the water meter devices are arranged in parallel up and down, heat exchangers are distributed among the water meter devices, the heat exchangers are coil type heat exchangers, and the coil type heat exchangers are communicated.
One or more embodiments of the present invention have the following advantageous effects:
(1) the utility model can effectively improve the heat transfer between cold and hot fluids by improving the arrangement of the heat exchangers in the cooling tower.
(2) The MVR steam is treated by the cooling tower and the biological filter in a combined manner, so that the purification treatment of the MVR steam can be effectively realized, the MVR steam emission is ensured to reach the standard, and the emission of malodorous gas is prevented.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model.
FIG. 1 is a schematic view of a cooling tower provided in example 1;
FIG. 2 is a schematic view of the pretreatment zone + biofilter configuration provided in example 1;
FIG. 3 is a layout diagram of an arrangement of heat exchangers in a cooling tower provided in example 1;
FIG. 4 is a schematic diagram of the packing arrangement in the cooling tower provided in example 1;
wherein, 1-water pipe interface, 2-spray pump, 3-cold air port, 4-packing layer, 5-heat exchanger, 6-water meter, 7-damp and hot air outlet, 8-blower, 9-steam inlet, 10-steam outlet, 11-refrigerating fluid collecting tank, 12-circulating refrigerating water pipeline, 13-pretreatment tank, 14-pretreatment steam inlet, 15-pretreatment water meter, 16-pump, 17-back flushing water inlet, 18-biological packing layer, 19-biological filter water inlet, 20-water distribution device, 21-overflow weir, 22-back flushing water outlet, 23-tank wall, 24-bearing layer, 25-aeration device, 26-back flushing gas inlet, 27-vertical packing pipe of cooling tower, water distribution device, and water distribution device, 28-cooling tower S-shaped packing tube.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a cooling tower-biological filter combined MVR steam treatment system, which comprises a cooling tower and a biological filter, wherein MVR steam enters the biological filter for continuous treatment after being treated by the cooling tower; the cooling tower sequentially comprises a water meter, a heat exchanger, a packing layer and a refrigerating fluid collecting tank from top to bottom;
a plurality of water meters are arranged in parallel up and down, heat exchangers are distributed among the water meters, the heat exchangers are coil type heat exchangers, and the coil type heat exchangers are communicated with each other; the purpose of the heat exchange device adopting the coil type arrangement is to increase the heat transfer time between the cooling water and the steam and ensure that the cooling water can be uniformly arranged on the next heat exchange device every time so as to fully transfer heat. The heat exchanger is made of alloy steel.
Furthermore, a steam inlet and a steam outlet are arranged on the side surface of the cooling tower, the steam inlet is positioned above the steam outlet, and the steam inlet and the steam outlet are both connected with the heat exchanger;
furthermore, cold air ports are arranged on two sides of the filler layer to cool liquid in the filler;
furthermore, the packing layer is formed by vertically arranging a plurality of packing tubes, each packing tube is of a combined structure of a vertical packing tube and an S-shaped packing tube, and holes are arranged on the vertical packing tubes;
wherein, arrange on the vertical pipe of packing and to arrange the porous air conditioning that can promote in the cold gas layer and get into the packing layer, S type filled tube then has advantages such as hydrophilic area is big, the cooling effect is good, and the combination of two kinds of filled tube structures can increase the heat dissipation capacity, and extension cooling water dwell time increases heat transfer area, increases the heat transfer volume.
Furthermore, in the surface hydrophone, the surface hydrophone of top has the spray pump through the pipe connection, simultaneously, sprays the pump and still is connected with water pipe connector and refrigerating fluid collecting pit, carries the cooling water in external water source and the refrigerating fluid collecting pit to the surface hydrophone through spraying the pump and sprays, realizes the circulation of cooling water.
Furthermore, the top of the cooling tower is provided with a wet air outlet, and a fan is arranged at the wet air outlet and can discharge wet and hot air in the cooling tower in time.
Further, a pretreatment area is arranged between the cooling tower and the biological filter; the utility model can effectively prevent the discharge of the residual steam in the cooling tower and can also use the biological filter to treat the residual steam by installing the pretreatment area between the cooling tower and the biological filter.
Furthermore, the pretreatment area comprises a pretreatment steam inlet, a pretreatment box body, a pretreatment water outlet and a pretreatment water meter, the pretreatment steam inlet is arranged at the upper end of the pretreatment box body, the pretreatment water outlet is arranged at the bottom end of the pretreatment box body, the pretreatment steam inlet is connected with the steam outlet of the cooling tower, the pretreatment water meter is arranged at the top of the pretreatment box body, and the pretreatment water meter is connected with the pretreatment spray pump. Wherein, the pretreatment area is arranged to dissolve the residual steam in the cooling tower into water for subsequent biological filter treatment.
Furthermore, the pretreated water outlet is connected with a water inlet of the biological filter through a pump, and the pretreated sewage is sent to the biological filter for further treatment.
Further, the biological filter comprises a water distribution device, a biological filler layer, a supporting layer and an aeration device from top to bottom in sequence;
furthermore, in the biological filter, an overflow weir is arranged on the side wall between the biological filler layer and the water distribution device, organic pollutants in the sewage are adsorbed and degraded by microorganisms in a biological membrane after the sewage is treated by the biological filler layer, so that the sewage is purified, and the purified water is discharged through the overflow weir;
furthermore, the overflow weir is connected with a water pipe interface in the cooling tower, and the overflowed water can be used as water for the cooling tower, so that the water can be recycled; in the cooling tower filling material, the water can be recycled and purified, so that the polluting substances in the MVR steam can be removed.
Furthermore, a back flushing water inlet and a back flushing gas inlet are arranged below the aeration device and are used for removing microbial residues in the biological filler layer;
furthermore, a back flushing water outlet is arranged on the side wall above the biological filler layer and used for discharging back flushing water.
Preferably, the biological filler layer uses the mixture of broken stone, coke and dry bark as the filler.
Example 1
As shown in FIGS. 1 to 4, the utility model provides a cooling tower-biological filter combined MVR vapor treatment system, which comprises a cooling tower, a pretreatment area and a biological filter;
in the cooling tower, a surface water device 6, a coil type heat exchanger 5, a packing layer 4 and a refrigerating fluid collecting pool 11 are arranged from top to bottom in sequence; 3 water meters 6 are arranged in parallel up and down, 3 layers of heat exchangers 5 are distributed among the 3 layers of water meters, and the 3 heat exchangers 5 are communicated; the side of cooling tower is provided with steam inlet 9 and steam outlet 10, steam inlet 9 is located the top of steam outlet 10, and steam inlet 9 and steam outlet 10 all link to each other with the heat exchanger, and MVR steam carries out heat transfer treatment with the water that table water ware 6 sprayed in steam inlet 9 gets into heat exchanger 5, and remaining steam is finally derived from steam outlet 10 to get into pretreatment area further processing. The water after heat exchange enters the packing layer 4 for cooling, and cooling water is collected in the refrigerating fluid collecting tank 11; the uppermost part of the cooling tower is provided with a wet air outlet 7, and a fan 8 is arranged at the wet air outlet 7.
In the water meter 6, the uppermost water meter is connected with a spray pump 2 through a pipeline, meanwhile, the spray pump 2 is further connected with a water pipe connector 1 and a refrigerating fluid collecting tank 11, and cooling water in an external water source and the refrigerating fluid collecting tank 11 is conveyed to the water meter 6 through the spray pump 2 to be sprayed, so that circulation of the cooling water is realized.
The packing layer 4 is formed by vertically arranging a plurality of packing tubes, each packing tube is a combined structure of a vertical packing tube 27 and an S-shaped packing tube 28, and holes are arranged on the vertical packing tubes 27; the two sides of the packing layer 4 are provided with cold air ports 3 for cooling the liquid in the packing;
the pretreatment area comprises a pretreatment steam inlet 14, a pretreatment box body 13, a pretreatment water outlet and a pretreatment water meter 15, the pretreatment steam inlet 14 is arranged at the upper end of the pretreatment box body 13, the pretreatment water outlet is arranged at the bottom end of the pretreatment box body 13, the pretreatment steam inlet 14 is connected with a steam outlet 10 of a cooling tower, the pretreatment water meter 15 is arranged at the top of the pretreatment box body 13, and the pretreatment water meter 15 is connected with a pretreatment spray pump; the pretreated water outlet is connected with a biological filter water inlet 19 through a pump 16, and the pretreated sewage is sent to the biological filter for further treatment.
The biological filter comprises a water distribution device 20, a biological filler layer 18, a supporting layer 24 and an aeration device 25 from top to bottom in sequence; an overflow weir 21 is arranged on the side wall between the biological packing layer 18 and the water distribution device 20, after the sewage is treated by the biological packing layer 18, organic pollutants in the sewage are adsorbed and degraded by microorganisms in a biological membrane, so that the sewage is purified, and the purified water is discharged through the overflow weir 21; the overflow weir 21 is connected with a water pipe connector 1 in the cooling tower, and the overflowed water is used as water for the cooling tower, so that the water is recycled; a back flushing water inlet 17 and a back flushing gas inlet 26 are arranged below the aeration device 25 and are used for removing microbial residues in the biological filler layer 18; the side wall above the bio-packing layer 18 is provided with a backwash water outlet 22 from which backwash water is discharged.
The working principle is as follows:
MVR steam gets into heat transfer device 5 through steam inlet 9, and during simultaneously the cooling water promoted to the surface hydrophone 6 through spray pump 2, carries out the heat transfer in the cooling tower, and after the heat transfer, the cooling water gets into packing layer 4 in, cools down under the effect of air conditioning, forms the refrigerating fluid, collects in refrigerating fluid collecting pit 11, then gets into circulation refrigerated water pipeline 12, carries out cyclic utilization via spray pump 2. The wet air in the cooling tower is discharged through the wet air outlet under the driving of the fan.
And a small amount of residual MVR steam and condensed liquid in the heat exchanger enter a pretreatment steam inlet 14 through a steam outlet 10 and a pipeline, and the residual MVR steam is dissolved in water under the action of a pretreatment water meter and pumped into the biological filter by a pump 16.
In the biological filter tank, sewage flows through the water distribution device 20, the biological filler layer 18 and the supporting layer 24 in sequence, aeration is carried out inside through the aeration device, so that the aerobic and anaerobic processes are carried out in a crossed manner, after the biological membrane is mature, organic pollutants in the sewage are adsorbed and degraded by microorganisms in the biological membrane, so that the sewage is purified, the purified water is discharged through the overflow weir 21, and the water treated by the biological filter tank is conveyed to the water pipe connector 1 of the cooling tower through a pipeline to be used as water for the cooling tower. In addition, back flushing water and back flushing air are carried out at regular intervals for removing microbial residues in the biological filler layer 18, and the back flushing water is discharged through a back flushing water outlet 22 at the upper part of the biological filter.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (10)
1. A cooling tower-biological filter combined MVR steam treatment system is characterized in that: the MVR steam enters the biological filter for continuous treatment after being treated by the cooling tower; the cooling tower sequentially comprises a water meter, a heat exchanger, a packing layer and a refrigerating fluid collecting tank from top to bottom;
the water meter comprises a plurality of water meter devices, wherein the water meter devices are arranged in parallel up and down, heat exchangers are distributed among the water meter devices, the heat exchangers are coil type heat exchangers, and the coil type heat exchangers are communicated.
2. The system of claim 1, wherein: a steam inlet and a steam outlet are arranged on the side surface of the cooling tower, the steam inlet is positioned above the steam outlet, and the steam inlet and the steam outlet are both connected with the heat exchanger;
cold air ports are arranged on two sides of the packing layer to cool liquid in the packing;
the packing layer is formed by vertically arranging a plurality of packing tubes, each packing tube is of a combined structure of a vertical packing tube and an S-shaped packing tube, and holes are arranged on the vertical packing tubes.
3. The system of claim 1, wherein: in the table hydrophone, the table hydrophone of top has the spray pump through the pipe connection, simultaneously, sprays the pump and still is connected with water pipe connector and refrigerating fluid collecting pit, carries the cooling water in external water source and the refrigerating fluid collecting pit to the table hydrophone through the spray pump and sprays, realizes the circulation of cooling water.
4. The system of claim 1, wherein: the uppermost part of the cooling tower is provided with a wet air outlet, and a fan is arranged at the wet air outlet.
5. The system of claim 2, wherein: a pretreatment area is arranged between the cooling tower and the biological filter;
the pretreatment area comprises a pretreatment steam inlet, a pretreatment box body, a pretreatment water outlet and a pretreatment water meter, wherein the pretreatment steam inlet is formed in the upper end of the pretreatment box body, the pretreatment water outlet is formed in the bottom end of the pretreatment box body, the pretreatment steam inlet is connected with the steam outlet of the cooling tower, the pretreatment water meter is arranged at the top of the pretreatment box body, and the pretreatment water meter is connected with a pretreatment spray pump.
6. The system of claim 5, wherein: the pretreated water outlet is connected with a water inlet of the biological filter through a pump machine, and the pretreated sewage is sent to the biological filter for further treatment.
7. The system of claim 6, wherein: the biological filter comprises a water distribution device, a biological filler layer, a bearing layer and an aeration device from top to bottom in sequence.
8. The system of claim 7, wherein: in the biological filter, an overflow weir is arranged on the side wall between a biological filler layer and a water distribution device, organic pollutants in sewage are adsorbed and degraded by microorganisms in a biological membrane after the sewage is treated by the biological filler layer, so that the sewage is purified, and the purified water is discharged through the overflow weir;
and the overflow weir is connected with a water pipe connector in the cooling tower.
9. The system of claim 7, wherein: a back flushing water inlet and a back flushing gas inlet are arranged below the aeration device.
10. The system of claim 7, wherein: and a back flushing water outlet is arranged on the side wall above the biological filler layer and used for discharging back flushing water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122615956.0U CN215855319U (en) | 2021-10-28 | 2021-10-28 | Cooling tower-biological filter combined MVR steam treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122615956.0U CN215855319U (en) | 2021-10-28 | 2021-10-28 | Cooling tower-biological filter combined MVR steam treatment system |
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| Publication Number | Publication Date |
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| CN215855319U true CN215855319U (en) | 2022-02-18 |
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| CN202122615956.0U Active CN215855319U (en) | 2021-10-28 | 2021-10-28 | Cooling tower-biological filter combined MVR steam treatment system |
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- 2021-10-28 CN CN202122615956.0U patent/CN215855319U/en active Active
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