CN219792724U - Comprehensive wastewater grading treatment system - Google Patents
Comprehensive wastewater grading treatment system Download PDFInfo
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- CN219792724U CN219792724U CN202320628090.3U CN202320628090U CN219792724U CN 219792724 U CN219792724 U CN 219792724U CN 202320628090 U CN202320628090 U CN 202320628090U CN 219792724 U CN219792724 U CN 219792724U
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- 238000011282 treatment Methods 0.000 title claims abstract description 170
- 239000002351 wastewater Substances 0.000 title claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 121
- 239000012528 membrane Substances 0.000 claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 claims abstract description 27
- 239000010802 sludge Substances 0.000 claims description 43
- 238000004065 wastewater treatment Methods 0.000 claims description 12
- 230000018044 dehydration Effects 0.000 claims description 10
- 238000006297 dehydration reaction Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 abstract description 48
- 238000000034 method Methods 0.000 abstract description 17
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 25
- 208000005156 Dehydration Diseases 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000010170 biological method Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- YASYEJJMZJALEJ-UHFFFAOYSA-N Citric acid monohydrate Chemical compound O.OC(=O)CC(O)(C(O)=O)CC(O)=O YASYEJJMZJALEJ-UHFFFAOYSA-N 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 101000937129 Drosophila melanogaster Cadherin-related tumor suppressor Proteins 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001720 carbohydrates Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000011284 combination treatment Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011197 physicochemical method Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a comprehensive wastewater grading treatment system, which comprises a first water tank for storing DMF wastewater, a second water tank, a concentration device, a first water production tank, an anaerobic treatment unit, a two-stage biochemical treatment unit, a membrane treatment unit, a second water production tank and a concentrated water tank; the first water tank is connected with the concentration device, the first water production tank, the anaerobic treatment unit, the two-stage biochemical treatment unit, the membrane treatment unit and the second water production tank through pipelines in sequence, and the concentrated water tank is connected with the concentration device through pipelines. The second water tank is connected with a concentrating device through a pipeline, and the concentrating device is connected with a two-stage biochemical treatment unit through a pipeline. According to the utility model, through switching different working modes, the DMF wastewater and the citric acid wastewater are treated simultaneously. The treatment mode of the combined process is adopted, so that the treatment efficiency is improved, the process complexity is reduced, and the treatment cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, and particularly relates to a comprehensive wastewater grading treatment system.
Background
Different industrial industries produce different types of industrial wastewater during production, and during membrane production, the types of wastewater produced include: low concentration dimethylformamide waste water (DMF), citric acid waste water, and pure water for water production.
The conventional DMF treatment process comprises a biological method and a physical and chemical method (adsorption and extraction), wherein the biological method for treating DMF wastewater has the defects of long treatment time and incomplete degradation, and DMF can poison microorganisms and cause great impact on biological treatment; the regenerability of the adsorption method in the physicochemical method is poor, and the secondary pollution possibility exists in the organic matters used in the extraction;
meanwhile, the treatment process of the citric acid wastewater mainly adopts an anaerobic biological method, and utilizes the actions of different anaerobic microorganism populations to hydrolyze and anaerobically decompose organic matters such as protein fat carbohydrate and the like into fatty acid and other products.
Therefore, two treatment processes are needed to treat DMF and citric acid wastewater respectively, the treatment efficiency is low, the treatment process is complex, and the treatment cost is high.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide a comprehensive wastewater grading treatment system, which aims to solve the following technical problems in the prior art:
the DMF wastewater and the citric acid wastewater are treated by adopting two treatment processes, so that the problems of low treatment efficiency, complex treatment process and high treatment cost are caused.
The utility model adopts the following technical scheme:
a comprehensive wastewater grading treatment system comprises a first water tank for storing MDF wastewater, a concentration device, a first water production tank, an anaerobic treatment unit, a two-stage biochemical treatment unit, a membrane treatment unit, a second water production tank and a concentrated water tank;
the first water tank is connected with the concentration device, the first water production tank, the anaerobic treatment unit, the two-stage biochemical treatment unit, the membrane treatment unit and the second water production tank through pipelines in sequence, and the concentrated water tank is connected with the concentration device through pipelines.
In order to optimize the technical scheme, the specific measures adopted further comprise:
further, the concentration device comprises a water inlet end, a water producing end and a concentrated water end, wherein the water inlet end of the concentration device is connected with the first water tank pipeline, the water producing end of the concentration device is connected with the first water tank pipeline, and the concentrated water end of the concentration device is connected with the concentrated water tank pipeline.
Further, the first water tank, the concentration device and the concentrated water tank form a first treatment mode, the first water tank, the concentration device, the first water production tank, the anaerobic treatment unit, the two-stage biochemical treatment unit, the membrane treatment unit and the second water production tank form a second treatment mode, and the first treatment mode and the second treatment mode operate simultaneously.
Further, the membrane treatment unit comprises a water inlet end, a water producing end and a mud discharging end, wherein the water inlet end of the membrane treatment unit is connected with the two-stage biochemical treatment unit through a pipeline, the water producing end of the membrane treatment unit is connected with the second water producing tank through a pipeline, and the mud discharging end of the membrane treatment unit is connected with the two-stage biochemical treatment unit through a pipeline.
Further, the anaerobic treatment unit adopts an anaerobic tower, the two-stage biochemical treatment unit adopts a two-stage A/O pool, and the membrane treatment unit adopts an MBR membrane bioreactor.
Further, the device also comprises a sludge treatment module, wherein the sludge treatment module is connected with the two-stage biochemical treatment unit and the sludge discharge end pipeline of the membrane treatment unit.
Further, the sludge treatment module comprises a sludge concentration tank and a dehydration unit, wherein the sludge concentration tank is connected with a sludge discharge end pipeline of the two-stage biochemical treatment unit and the membrane treatment unit, and the dehydration unit is connected with the sludge concentration tank.
Further, the dehydration unit adopts a belt type dehydrator.
Further, the device also comprises a second water tank, wherein the second water tank and the concentration device, the first water tank, the anaerobic treatment unit, the two-stage biochemical treatment unit, the membrane treatment unit and the second water tank form a third treatment mode, and the second water tank and the concentration device and the two-stage biochemical treatment unit form a fourth treatment mode.
The utility model has the beneficial effects that:
compared with the prior art, the comprehensive wastewater grading treatment system can realize simultaneous treatment of DMF wastewater and citric acid wastewater by switching different working modes. The treatment mode of the combined process is adopted, so that the treatment efficiency is improved, the process complexity is reduced, and the treatment cost is reduced.
In the working mode switching process, DMF waste water or citric acid waste water can be treated independently, when simultaneous treatment is needed, synchronous treatment can be realized by directly starting a third working mode on the basis without adjusting the first working mode and the second working mode, and meanwhile, concentrated water after concentration of citric acid can be used as a carbon source to be input into the two-stage biochemical treatment unit.
The DMF wastewater treatment mode can improve the DMF utilization rate, and the DMF is recovered through a treatment process, so that recycling is realized.
Drawings
FIG. 1 is a schematic diagram of the connection relationship of a comprehensive wastewater treatment system according to the present utility model.
The reference numerals are: a first water tank 1, a concentration device 2, a first water production tank 3, an anaerobic treatment unit 4, a two-stage biochemical treatment unit 5, a membrane treatment unit 6, a second water production tank 7, a concentrate tank 8, a sludge concentration tank 9, a dehydration unit 10 and a second water tank 11.
Description of the embodiments
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.
Referring to fig. 1, the embodiment provides a comprehensive wastewater grading treatment system, which can treat DMF wastewater and citric acid wastewater independently or simultaneously by utilizing switching of different working modes, and has the advantages of simple process flow, high treatment efficiency and low treatment cost.
A comprehensive wastewater grading treatment system comprises a first water tank 1 for storing MDF wastewater, a concentration device 2, a first water production tank 3, an anaerobic treatment unit 4, a two-stage biochemical treatment unit 5, a membrane treatment unit 6, a second water production tank 7 and a concentrated water tank 8. Wherein the anaerobic treatment unit 4 adopts an anaerobic tower, the two-stage biochemical treatment unit 5 adopts a two-stage A/O pool, and the membrane treatment unit 6 adopts an MBR membrane bioreactor.
The first water tank 1 is connected with the concentration device 2, the first water production tank 3, the anaerobic treatment unit 4, the two-stage biochemical treatment unit 5, the membrane treatment unit 6 and the second water production tank 7 through pipelines in sequence, and the concentrated water tank 8 is connected with the concentration device 2 through pipelines. The concentrating device 2 comprises a water inlet end, a water producing end and a concentrated water end, wherein the water inlet end of the concentrating device 2 is connected with the first water tank 1 through a pipeline, the water producing end of the concentrating device 2 is connected with the first water tank 3 through a pipeline, and the concentrated water end of the concentrating device 2 is connected with the concentrated water tank 8 through a pipeline. Therefore, the first water tank 1, the concentrating device 2 and the concentrate tank 8 form a first treatment mode, and are used for concentrating and purifying the DMF wastewater to obtain DMF wastewater with higher concentration, so that the further purification treatment is convenient to follow. Secondly, the first water tank 1, the concentration device 2, the first water producing tank 3, the anaerobic treatment unit 4, the two-stage biochemical treatment unit 5, the membrane treatment unit 6 and the second water producing tank 7 form a second treatment mode for carrying out hierarchical combination treatment on produced water left after the concentration device 2 purifies DMF, and the first treatment mode and the second treatment mode are operated simultaneously.
In the second mode treatment process, the sludge activity in the two-stage biochemical treatment units 5 needs to be maintained, so that the membrane treatment unit 6 comprises a water inlet end, a water producing end and a sludge discharging end, the water inlet end of the membrane treatment unit 6 is connected with the two-stage biochemical treatment units 5 through pipelines, the water producing end of the membrane treatment unit 6 is connected with the second water producing tank 7 through a pipeline, and the sludge discharging end of the membrane treatment unit 6 is connected with the two-stage biochemical treatment units 5 through pipelines. The activated sludge is recycled, so that on one hand, the sludge activity in the two-stage biochemical treatment unit 5 is ensured, and on the other hand, the sludge discharge is reduced.
As the treatment time is accumulated, the retained sludge is increased, so that when part of the sludge is retained to meet the requirement of the two-stage biochemical treatment unit 5, the rest of the sludge needs to be further treated, and the system further comprises a sludge treatment module which is connected with the sludge discharge end pipelines of the two-stage biochemical treatment unit 5 and the membrane treatment unit 6. Specifically, the sludge treatment module comprises a sludge concentration tank 9 and a dehydration unit 10, wherein the sludge concentration tank 9 is connected with sludge discharge ends of the two-stage biochemical treatment unit 5 and the membrane treatment unit 6 through pipelines, and the dehydration unit 10 is connected with the sludge concentration tank 9. The dewatering unit 10 employs a belt type dewatering machine.
The sludge treatment module workflow comprises the following two parts: a first part: the sludge discharge end of the membrane treatment unit 6 returns sludge to the two-stage biochemical treatment unit 5, and when the sludge amount in the two-stage biochemical treatment unit 5 meets certain requirements, the redundant sludge is input into the sludge concentration tank 9; when the sludge circulation between the membrane treatment unit 6 and the two-stage biochemical treatment unit 5 is insufficient to meet the demand, the sludge in the sludge concentration tank 9 is replenished into the two-stage biochemical treatment unit 5. A second part: and (5) carrying out dehydration treatment on the redundant sludge.
The treatment of the citric acid wastewater is directly established on the DMF wastewater treatment process flow, so the system further comprises a second water tank 11, wherein the second water tank 11, the concentration device 2, the first water production tank 3, the anaerobic treatment unit 4, the two-stage biochemical treatment unit 5, the membrane treatment unit 6 and the second water production tank 7 form a third treatment mode, the second water tank 11, the concentration device 2 and the two-stage biochemical treatment unit 5 form a fourth treatment mode, the third working mode is used for treating the produced water after the concentration of the citric acid wastewater, and the fourth working mode is used for supplementing the concentrated water after the concentration of the citric acid wastewater into the two-stage biochemical treatment unit 5 as a carbon source.
The working flow of the system is as follows:
dividing according to the type of wastewater treatment, including DMF wastewater and citric acid wastewater, firstly, treating DMF wastewater by adopting a combination of a first working mode and a second working mode, wherein the first working mode and the second working mode are carried out simultaneously, the first working mode is used for carrying out preliminary concentration on DMF wastewater to generate DMF concentrated water and water yield, and the DMF concentrated water and the water yield are respectively treated according to the first working mode and the second working mode. Secondly, the treatment of the citric acid wastewater adopts a third working mode and a fourth working mode to treat, the concentration device is used for concentrating the citric acid wastewater to generate concentrated citric acid water and produced water, wherein the concentrated citric acid water is treated in the fourth working mode and is used as a carbon source to be input into an A pool in a two-stage biochemical treatment unit, and the produced water is subjected to multistage treatment according to the third working mode, so that the synchronous treatment of DMF wastewater and citric acid wastewater can be realized.
The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the utility model without departing from the principles thereof are intended to be within the scope of the utility model as set forth in the following claims.
Claims (9)
1. A comprehensive wastewater grading treatment system is characterized in that: the device comprises a first water tank for storing DMF wastewater, a concentration device, a first water production tank, an anaerobic treatment unit, a two-stage biochemical treatment unit, a membrane treatment unit, a second water production tank and a concentrated water tank;
the first water tank is connected with the concentration device, the first water production tank, the anaerobic treatment unit, the two-stage biochemical treatment unit, the membrane treatment unit and the second water production tank through pipelines in sequence, and the concentrated water tank is connected with the concentration device through pipelines.
2. An integrated wastewater treatment system according to claim 1, wherein: the concentrating device comprises a water inlet end, a water producing end and a concentrated water end, wherein the water inlet end of the concentrating device is connected with a first water tank pipeline, the water producing end of the concentrating device is connected with the first water tank pipeline, and the concentrated water end of the concentrating device is connected with the concentrated water tank pipeline.
3. An integrated wastewater treatment system according to claim 2, wherein: the first water tank, the concentration device and the concentrated water tank form a first treatment mode, the first water tank, the concentration device, the first water production tank, the anaerobic treatment unit, the two-stage biochemical treatment unit, the membrane treatment unit and the second water production tank form a second treatment mode, and the first treatment mode and the second treatment mode run simultaneously.
4. A comprehensive wastewater treatment system according to claim 3, wherein: the membrane treatment unit comprises a water inlet end, a water producing end and a mud discharging end, wherein the water inlet end of the membrane treatment unit is connected with the two-stage biochemical treatment unit through a pipeline, the water producing end of the membrane treatment unit is connected with the second water producing tank through a pipeline, and the mud discharging end of the membrane treatment unit is connected with the two-stage biochemical treatment unit through a pipeline.
5. An integrated wastewater treatment system according to claim 4, wherein: the anaerobic treatment unit adopts an anaerobic tower, the two-stage biochemical treatment unit adopts a two-stage A/O pool, and the membrane treatment unit adopts an MBR membrane bioreactor.
6. An integrated wastewater treatment system according to claim 1, wherein: the device also comprises a sludge treatment module, wherein the sludge treatment module is connected with the two-stage biochemical treatment unit and the sludge discharge end pipeline of the membrane treatment unit.
7. An integrated wastewater treatment system according to claim 6, wherein: the sludge treatment module comprises a sludge concentration tank and a dehydration unit, wherein the sludge concentration tank is connected with the two-stage biochemical treatment unit and the sludge discharge end pipeline of the membrane treatment unit, and the dehydration unit is connected with the sludge concentration tank.
8. An integrated wastewater treatment system according to claim 7, wherein: the dehydration unit adopts a belt type dehydrator.
9. An integrated wastewater treatment system according to claim 1, wherein: the device also comprises a second water tank, wherein the second water tank and the concentration device, the first water tank, the anaerobic treatment unit, the two-stage biochemical treatment unit, the membrane treatment unit and the second water tank form a third treatment mode, and the second water tank and the concentration device and the two-stage biochemical treatment unit form a fourth treatment mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320628090.3U CN219792724U (en) | 2023-03-28 | 2023-03-28 | Comprehensive wastewater grading treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320628090.3U CN219792724U (en) | 2023-03-28 | 2023-03-28 | Comprehensive wastewater grading treatment system |
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| Publication Number | Publication Date |
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| CN219792724U true CN219792724U (en) | 2023-10-03 |
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| CN202320628090.3U Active CN219792724U (en) | 2023-03-28 | 2023-03-28 | Comprehensive wastewater grading treatment system |
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| CN (1) | CN219792724U (en) |
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- 2023-03-28 CN CN202320628090.3U patent/CN219792724U/en active Active
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