CN212334717U - Dosing device for biological denitrification of TDI wastewater - Google Patents
Dosing device for biological denitrification of TDI wastewater Download PDFInfo
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- CN212334717U CN212334717U CN202020173906.4U CN202020173906U CN212334717U CN 212334717 U CN212334717 U CN 212334717U CN 202020173906 U CN202020173906 U CN 202020173906U CN 212334717 U CN212334717 U CN 212334717U
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- tank
- storage tank
- medicament
- medicament storage
- elevated
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- 239000002351 wastewater Substances 0.000 title claims abstract description 22
- 239000003814 drug Substances 0.000 claims abstract description 87
- 238000003860 storage Methods 0.000 claims abstract description 69
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 3
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000013022 venting Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model provides a charge device for TDI wastewater biological denitrification, which mainly comprises a charge tank, a medicament storage tank, a head tank and a medicament distributor in the system. The utility model discloses set up the elevated tank, through the automatic control that stays, make the mode of adding medicine change into to rely on liquid level difference automatic reagent feeding by original pump body with medicine, reduce the equipment that moves quantity that needs to use, show to reduce and move equipment investment and maintenance frequency, and add the medicine pump operation process and solved the problem of "pump out" operation through setting up overflow mouth and back flow in the elevated tank, improved and moved equipment operating stability, the life of extension dosing pump reduces its fault rate.
Description
Technical Field
The utility model relates to a charge device of TDI waste water biological denitrification belongs to the water treatment field.
Background
Chemical wastewater is complex in composition, poor in biodegradability and long in treatment process flow, and generally, the biodegradability of the wastewater is improved by pretreatment, and the wastewater is discharged up to the standard after biochemical treatment and advanced treatment. In particular, the wastewater of fine chemical engineering, such as TDI wastewater generated in the production process of toluene diisocyanate, has the characteristics of complex composition, high organic matter content, high salt content, high total nitrogen content, poor biodegradability and the like, the treatment process needs biochemical treatment in the middle to remove ammonia nitrogen and nitrate nitrogen besides pretreatment and deep oxidation treatment, so that the total nitrogen index is reduced, and a biochemical system generally adopts a two-stage AO process to ensure the biochemical denitrification effect.
Because the TDI wastewater has the characteristic of low carbon-nitrogen ratio, the adopted two-stage AO process generally needs to add a carbon source into the TDI wastewater to ensure that denitrifying bacteria play a role, in order to save the adding cost, the adding form adopted at present generally adopts a single pump to supply a 2-point (or more than 2-point) adding point for adding the carbon source, and under the condition, the adding flow rate between two points added by the pump is easy to influence each other. In addition, in order to ensure stable and continuous production, a biochemical system is generally provided with a plurality of production lines, so that the number of field pumps is large, and the equipment investment cost is high. When the operation life of the mobile equipment is longer, the equipment failure rate is high, the overhaul cost and the equipment updating cost are high, and a large amount of manpower, material resources and financial resources are needed to maintain the normal operation of the equipment.
SUMMERY OF THE UTILITY MODEL
Move the problem that equipment is in large quantity, frequency of failure is big, carbon source flow influences each other for solving current biochemical system charge device, the utility model provides a charge device of TDI waste water biological denitrification. The chemical adding device is simple to operate, few in movable equipment and convenient to maintain, can solve the problem that the stable operation of production is influenced by the large number of movable equipment and frequent faults of the conventional biochemical system, can save the equipment updating cost and greatly reduce the equipment maintenance frequency. The technical scheme of the utility model as follows:
a dosing device applied to biological denitrification treatment of TDI wastewater comprises a dosing tank, a medicament storage tank, a head tank and at least one biological tank which are sequentially communicated through a pipeline; the bottom of the medicament storage tank is at least 1m lower than the bottom of the dispensing tank; a storage tank feeding port of the medicament storage tank is positioned on the upper part of the middle part of the storage tank; a storage tank discharge port of the medicament storage tank is positioned at the bottom of the storage tank; the bottom of the elevated tank is at least 3m higher than the medicament storage tank and is higher than the liquid level of the biological pond by more than 3 m;
furthermore, a self-flow rate stop valve and a Y-shaped filter for controlling the medicament to flow from the dispensing tank to the medicament storage tank are arranged between the dispensing tank and the medicament storage tank; the Y-shaped filter is positioned behind the stop valve and used for intercepting particles in the medicament; a dosing pump is arranged between the medicament storage tank and the elevated tank;
furthermore, the upper part of the elevated tank is provided with an elevated tank feeding hole communicated with the storage tank discharging hole through a pipeline, and a dosing pump is arranged between the pipelines; the top of the elevated tank is provided with an elevated tank overflow port which is communicated with a reflux feed inlet of the medicament storage tank, so that overflow liquid of the elevated tank enters the medicament storage tank; the elevated tank bottom is provided with a plurality of elevated tank discharge ports, and the medicament is conveyed to the corresponding biological pond through a pipeline.
Further, a stirrer and a liquid level meter are arranged in the middle of the dispensing tank, and the stirrer consists of a motor, a stirring shaft and two layers of stirring impellers; the stop valve is positioned at the outlet of the dispensing groove.
Further, the bottom of the medicament storage tank is provided with a vent and a vent valve for venting liquid inside the medicament storage tank and flushing the medicament storage tank.
Further, the medicament storage tank is provided with a liquid level meter, so that the liquid level of the medicament storage tank is ensured to be lower than the liquid level of the dispensing groove by more than 1 m.
Furthermore, an automatic regulating valve is arranged between the elevated tank and the biological tank, and the dosage is regulated through the opening degree of the valve.
Furthermore, a mass flow meter is arranged behind the regulating valve and used for detecting the dosage.
Further, the dosing pump comprises a metering pump and a standby pump.
The utility model discloses following beneficial effect has:
1. the utility model provides a charge device for biological denitrification of TDI wastewater, compared with the traditional biological denitrification charge device, the utility model has simple operation, the medicament can be prepared strictly according to the process proportion, the problem of mutual influence of the charge amount in the charge process is solved, the uniformity of charging according to the sewage treatment amount is ensured, the waste of the medicament is reduced, and the stability of the carbon source concentration of the biochemical system is improved;
2. the utility model discloses set up the elevated tank, through the automatic control that stays, make the mode of adding medicine change into to rely on liquid level difference automatic reagent feeding by original pump body with medicine, reduce the equipment that moves quantity that needs to use, show to reduce and move equipment investment and maintenance frequency, and add the medicine pump operation process and solved the problem of "pump out" operation through setting up overflow mouth and back flow in the elevated tank, improved and moved equipment operating stability, the life of extension dosing pump reduces its fault rate.
3. The utility model discloses the elevated tank that sets up has certain volume, has certain buffer capacity, under the circumstances that breaks down when dosing pump and stand-by pump, pipeline etc. also can maintain the dose that adds of certain time, reserves the certain time for salvageing of equipment and pipeline, can alleviate production pressure to a certain extent.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
The reference numbers in the figures denote:
1. a dispensing tank; 11. a stirrer; 111. a motor; 112. a stirring shaft; 113. a stirring impeller; 2. a medicament reservoir; 21. a feed inlet of the storage tank; 22. a reflux feed inlet; 23. a vent port; 24. an atmospheric valve; 25. a discharge port of the storage tank; 3. a head tank; 31. a head tank feed inlet; 32. an overflow port of the head tank; 33. a discharge port of the head tank; 4. a biological pond; 5. a stop valve; 6. a Y-type filter; 7. a dosing pump; 8. an automatic regulating valve; 9. a mass flow meter; 10. a liquid level meter.
Detailed Description
A dosing device for biological denitrification of TDI wastewater comprises a dosing tank 1, a medicament storage tank 2, an elevated tank 3 and at least one biological tank 4 which are sequentially communicated through a pipeline; the bottom of the medicament storage tank 2 is at least 1m lower than the bottom of the dispensing tank 1; the storage tank feed inlet 21 of the medicament storage tank 2 is positioned at the upper part of the middle part of the storage tank; the storage tank discharge port 25 of the medicament storage tank 2 is positioned at the bottom of the storage tank; the bottom of the elevated tank 3 is at least 3m higher than the medicament storage tank 2 and is higher than the liquid level of the biological pond 4 by more than 3 m;
further, a self-flow rate stop valve 5 and a Y-shaped filter 6 for controlling the medicament to flow from the dispensing tank 1 to the medicament storage tank 2 are arranged between the dispensing tank 1 and the medicament storage tank 2; the Y-shaped filter 6 is positioned behind the stop valve 5 and used for intercepting particles in the medicament; a dosing pump 7 is arranged between the medicament storage tank 2 and the elevated tank 3;
furthermore, the upper part of the elevated tank 3 is provided with an elevated tank feed inlet 31 which is communicated with the storage tank discharge outlet 25 through a pipeline, and a dosing pump 7 is arranged between the pipelines; the top of the elevated tank 3 is provided with an elevated tank overflow port 32, and the overflow port 32 is communicated with the reflux feed inlet 22 of the medicament storage tank 2, so that the overflow liquid of the elevated tank 3 enters the medicament storage tank 2; the bottom of the elevated tank 3 is provided with a plurality of elevated tank discharge holes 33, and the medicament is conveyed to the corresponding biological pond 4 through a pipeline.
Further, a stirrer 11 and a liquid level meter 10 are arranged in the middle of the dispensing tank 1, and the stirrer 11 is composed of a motor 111, a stirring shaft 112 and two layers of stirring impellers 113; the stop valve 5 is positioned at the outlet of the dispensing groove 1.
Further, the bottom of the medicament storage tank 2 is provided with a vent 23 and a vent valve 24 for venting the liquid in the medicament storage tank 2 and flushing the medicament storage tank 2.
Further, the medicament storage tank 2 is provided with a liquid level meter 10, so that the liquid level of the medicament storage tank 2 is ensured to be lower than the liquid level of the dispensing tank 1 by more than 1 m.
Furthermore, an automatic regulating valve 8 is arranged between the elevated tank 3 and the biological tank 4, and the dosage is regulated through the opening degree of the valve.
Further, a mass flow meter 9 is arranged behind the regulating valve 8 and used for detecting the dosage.
Further, the dosing pump 7 comprises a metering pump and a standby pump.
The utility model discloses a theory of operation:
firstly, whether the mutual positions of the dispensing tank, the medicament storage tank, the head tank and the biological pond are correct or not is confirmed, and whether the pipeline connection is in place or not is confirmed.
Sequentially adding industrial water and an organic carbon source or an inorganic carbon source into the dispensing tank 1 according to a proportion, opening the stirrer 11, fully dissolving the carbon source to form a carbon source solution under the action of mechanical stirring, and observing the liquid level through a liquid level meter 10 in the dispensing tank 1. After the medicament is dissolved, the stop valve 5 is opened, the self-flow rate of the medicament is controlled by the valve 5, the medicament enters the medicament storage tank 2, and part of larger impurities can be removed through the Y-shaped filter 6 in the middle to prevent the blockage of the medicament feeding pump 7. When the medicine enters the medicine storage tank 2, the liquid level meter 10 in the medicine storage tank 2 is observed, and when a certain amount of medicine is stored in the medicine storage tank 2, the medicine outlet of the medicine storage tank 2 and the medicine adding pump 7 are opened, and the medicine is sent to the elevated tank 3.
The medicament in the elevated tank 3 automatically flows into the biological tank 4 through the elevated tank outlet 33, the mass flow meter 9 is used for observing the flow of the medicament added into the biological tank, and the flow of the medicament is adjusted until the flow is proper through the automatic adjusting valve 8.
The excess medicine pumped from the medicine tank 2 into the head tank 3 by the medicine feed pump 7 flows back to the return feed port 22 of the medicine tank 2 through the overflow port 32 of the head tank 3.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (7)
1. The utility model provides a charge device of biological denitrogenation of TDI waste water which characterized in that: comprises a dispensing tank (1), a medicament storage tank (2), a head tank (3) and at least one biological pond (4) which are communicated with each other through pipelines in sequence; the bottom of the medicament storage tank (2) is at least 1m lower than the bottom of the dispensing tank (1); a storage tank feeding hole (21) of the medicament storage tank (2) is positioned at the upper position of the middle part of the storage tank; a storage tank discharge port (25) of the medicament storage tank (2) is positioned at the bottom of the storage tank; the bottom of the elevated tank (3) is at least 3m higher than the medicament storage tank (2) and is higher than the liquid level of the biological pond (4) by more than 3 m;
a self-flow rate stop valve (5) and a Y-shaped filter (6) for controlling the medicament to flow from the dispensing tank (1) to the medicament storage tank (2) are arranged between the dispensing tank (1) and the medicament storage tank (2); the Y-shaped filter (6) is positioned behind the stop valve (5) and is used for intercepting particles in the medicament; a dosing pump (7) is arranged between the medicament storage tank (2) and the elevated tank (3);
the upper part of the elevated tank (3) is provided with an elevated tank feed inlet (31) which is communicated with the storage tank discharge outlet (25) through a pipeline, and a dosing pump (7) is arranged between the pipelines; the top of the elevated tank (3) is provided with an elevated tank overflow port (32), and the overflow port (32) is communicated with a reflux feed inlet (22) of the medicament storage tank (2) so that overflow liquid of the elevated tank (3) enters the medicament storage tank (2); the bottom of the elevated tank (3) is provided with a plurality of elevated tank discharge holes (33) which convey the medicament to the corresponding biological pond (4) through a pipeline.
2. The dosing device for biological denitrification of TDI wastewater as recited in claim 1, wherein: the middle part of the dispensing tank (1) is provided with a stirrer (11) and a liquid level meter (10), and the stirrer (11) consists of a motor (111), a stirring shaft (112) and two layers of stirring impellers (113); the stop valve (5) is positioned at the outlet of the dispensing groove (1).
3. The dosing device for biological denitrification of TDI wastewater as recited in claim 2, wherein: and the bottom of the medicament storage tank (2) is provided with a vent hole (23) and a vent valve (24) for venting liquid in the medicament storage tank (2) and flushing the medicament storage tank (2).
4. The dosing device for biological denitrification of TDI wastewater as recited in claim 3, wherein: the liquid level meter (10) is arranged on the medicament storage tank (2) to ensure that the liquid level of the medicament storage tank (2) is lower than the liquid level of the dispensing tank (1) by more than 1 m.
5. The dosing device for biological denitrification of TDI wastewater as recited in claim 4, wherein: an automatic regulating valve (8) is arranged between the elevated tank (3) and the biological tank (4), and the dosage is regulated through the opening degree of the valve.
6. The reagent adding device for biological denitrification of TDI wastewater as claimed in claim 5, wherein: and a mass flow meter (9) is arranged behind the regulating valve (8) and is used for detecting the dosage.
7. The dosing device for biological denitrification of TDI wastewater as recited in claim 6, wherein: the dosing pump (7) comprises a metering pump and a standby pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020173906.4U CN212334717U (en) | 2020-02-14 | 2020-02-14 | Dosing device for biological denitrification of TDI wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020173906.4U CN212334717U (en) | 2020-02-14 | 2020-02-14 | Dosing device for biological denitrification of TDI wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212334717U true CN212334717U (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020173906.4U Expired - Fee Related CN212334717U (en) | 2020-02-14 | 2020-02-14 | Dosing device for biological denitrification of TDI wastewater |
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| Country | Link |
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| CN (1) | CN212334717U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114455649A (en) * | 2021-12-28 | 2022-05-10 | 安徽绿衡环保科技有限公司 | Intelligent accurate dosing device and using method thereof |
-
2020
- 2020-02-14 CN CN202020173906.4U patent/CN212334717U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114455649A (en) * | 2021-12-28 | 2022-05-10 | 安徽绿衡环保科技有限公司 | Intelligent accurate dosing device and using method thereof |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |