CN205974193U - A multistage ammonia stripping system for refuse disposal filtration liquid - Google Patents
A multistage ammonia stripping system for refuse disposal filtration liquid Download PDFInfo
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- CN205974193U CN205974193U CN201620954153.4U CN201620954153U CN205974193U CN 205974193 U CN205974193 U CN 205974193U CN 201620954153 U CN201620954153 U CN 201620954153U CN 205974193 U CN205974193 U CN 205974193U
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Abstract
The utility model provides a multistage ammonia stripping system for refuse disposal filtration liquid, including pretreatment systems, the multistage system of taking off and the tail gas recovery system of blowing, it has 4 conduit to blow the drain connection who takes off the regulation tower, following 4 conduit and drawing forth backflow pipeline, backflow pipeline's drain connection arrives the cold medium inlet of tertiary heat exchanger, in addition, draw forth 5 conduit from 1 conduit's entry end, 4 conduit and 5 conduit all are connected to line mixer's water inlet, line mixer's drain connection to biochemical pond. The advantage does: contrast traditional ammonia stripping technology, through increasing the readjustment unit, has solved filtration liquid C: N is than offset -tune problem, realized simultaneously that the waste water treatment volume reduces, the medicament throw add less, the running cost is low, go out the silk waste dirt less, waste changing into resource, treatment effect that quality of water control range is big, make it to carry out the large -scale engineering ization application, solve landfill leachate handle difficult, characteristics that treatment cost is high.
Description
Technical field
This utility model belong to technical field of landfill leachate treatment and in particular to a kind of for processing percolate
Multistage ammonia aeration system.
Background technology
With the raising of the expansion of China's city size, the increase of urban population and Living consumption, China's city life
The yield of rubbish alive is also steeply rising.The especially big city such as Shanghai, Guangzhou, produces rubbish daily more than 1kg, per capita close to work
Industry level of developed countries.According to the principle of China's garbage disposal " innoxious, minimizing, resource ", by newly-built large quantities of lifes
Garbage sanitary filling field alive.And the qualified discharge whether percolate can be processed is to weigh whether a landfill yard is health
One of important indicator of landfill yard.
Garbage loading embeading and burning are the main method processing rubbish at present.However, Landfill Leachate Pollution is but existing solid
An inevitable problem during body offal treatment and following garbage loading embeading.Percolate can to subsoil water around,
Surface water and soil cause serious environmental pollution.Being processed to domestic waste using landfill yard, incineration plant and
During comprehensive management, one of main job content is exactly that percolate is processed using suitable method, keeps away
Exempt to cause secondary pollution to surrounding.
Percolate is a kind of sufficiently complex waste water of composition, containing multiple difficult degradation organic principles and ammonia nitrogen, has
The features such as pollutant levels height, strong toxicity, water quality and the water yield fluctuate big.The important feature of percolate is NH3- N concentration
Height, its concentration value, and constantly rises with the prolongation of landfill time to up to ten thousand from tens.
The percolate treating process of existing city refuse landfill, majority selects biochemical processing method.Processed with biochemical process
During percolate, the NH of excessive concentration3- N increased the load of biochemical treatment, and too low C/N (especially stablizes landfill yard
Percolate) lead in percolate nutritive proportion imbalance, have a strong impact on biochemical treatment system and stably effectively run.Garbage filter
Liquid middle and high concentration ammonia nitrogen is also inhibited to biological activity.
At present mainly using the mode of Add formaldehyde in biochemical treatment or glucose, water is improved to percolate C/N imbalance
C content in body, adds methanol and biochemical sludge can be caused to be poisoned, add glucose and then greatly can improve operating cost, and traditional
Ammonia aeration technique PH adjusts, high cost big with readjustment reagent consumption amount, and the worry of water body conductance is high, and fouling is serious, and subsequent reactions affect
Big feature causes practical application effect low.
Utility model content
The defect existing for prior art, this utility model provides a kind of multistage ammonia for processing percolate to blow
De- system, can effectively solving the problems referred to above.
The technical solution adopted in the utility model is as follows：
This utility model provide a kind of multistage ammonia aeration system for processing percolate, including pretreatment system,
Multistage blow-removing system and exhaust gas recovery system；
Described pretreatment system includes PH alkali liquid tank and first-class heat exchanger；Described multistage blow-removing system includes one-level stripping
Tower, secondary heat exchanger, two grades of stripping towers, three-level heat exchanger and stripping adjusting tower；Described exhaust gas recovery system includes pickling tower；
Raw water is connected to the water inlet of described one-level stripping tower by the 1st aqueduct；Described 1st aqueduct is gone here and there
Join described PH alkali liquid tank and described first-class heat exchanger；
The discharge outlet of described one-level stripping tower is connected to the water inlet of described two grades of stripping towers by the 2nd aqueduct；?
Connect on described 2nd aqueduct described secondary heat exchanger；
The discharge outlet of described two grades of stripping towers is connected to the water inlet of described stripping adjusting tower by the 3rd aqueduct；?
Connect on described 3rd aqueduct described three-level heat exchanger；
The discharge outlet of described stripping adjusting tower is connected with the 4th aqueduct；Return duct is drawn from described 4th aqueduct
Road, the discharge outlet of described reflux line is connected to the cold medium entrance of described three-level heat exchanger；Additionally, from described 1st water-supply-pipe
The arrival end in road draws the 5th aqueduct；Described 4th aqueduct and described 5th aqueduct are all connected to pipe-line mixer
Water inlet；The discharge outlet of described pipe-line mixer is connected to biochemical pond；
Last person's QI KOU of described one-level stripping tower, described two grades of stripping towers and described stripping adjusting tower is all by last person's trachea
Road is connected to the air inlet of described pickling tower.
Preferably, described exhaust gas recovery system also includes ammonium sulfate recycling can；Described pickling tower is reclaimed with described ammonium sulfate
Tank connects.
Preferably, the steam port that enters of described first-class heat exchanger, described secondary heat exchanger and described three-level heat exchanger is connected to
Same steam conveying pipe.
The multistage ammonia aeration system for processing percolate that this utility model provides has advantages below：
(1) contrast traditional ammonia aeration technique, by increasing readjustment unit, solve percolate C:N is than the problem of imbalance, same
When achieve wastewater treatment capacity reduce, adding of agent is few, operating cost is low, water outlet fouling is few, changing waste into resources, water quality adjustment model
Enclose big treatment effect, enable large-scale engineeringization application, solve landfill leachate treatment hardly possible, processing cost is high
Feature.
(2) can achieve to the monitoring in all directions of whole landfill leachate treatment process it is ensured that treatment effeciency.
Brief description
The structural representation of the multistage ammonia aeration system for processing percolate that Fig. 1 provides for this utility model；
The process chart of the multistage ammonia aeration system for processing percolate that Fig. 2 provides for this utility model；
Wherein, 1- one-level stripping tower；Bis- grades of stripping towers of 2-；3- stripping adjusting tower；4- pickling tower；5- reflux line；6- the 5th
Aqueduct.
Specific embodiment
In order that technical problem, technical scheme and beneficial effect that this utility model is solved become more apparent, below
In conjunction with drawings and Examples, this utility model is further elaborated.It should be appreciated that described herein be embodied as
Example only in order to explain this utility model, is not used to limit this utility model.
In conjunction with Fig. 1, this utility model provides a kind of multistage ammonia aeration system for processing percolate, locates including pre-
Reason system, multistage blow-removing system and exhaust gas recovery system；
Pretreatment system includes PH alkali liquid tank and first-class heat exchanger；Multistage blow-removing system include one-level stripping tower, two grades change
Hot device, two grades of stripping towers, three-level heat exchanger and stripping adjusting tower；Exhaust gas recovery system includes pickling tower；
Raw water is connected to the water inlet of one-level stripping tower by the 1st aqueduct；Series connection PH alkali liquor on the 1st aqueduct
Tank and first-class heat exchanger；
The discharge outlet of one-level stripping tower is connected to the water inlet of two grades of stripping towers by the 2nd aqueduct；In the 2nd water-supply-pipe
Series connection secondary heat exchanger on road；
The discharge outlet of two grades of stripping towers is connected to the water inlet of stripping adjusting tower by the 3rd aqueduct；In the 3rd water-supply-pipe
Series connection three-level heat exchanger on road；
The discharge outlet of stripping adjusting tower is connected with the 4th aqueduct；Reflux line, backflow are drawn from the 4th aqueduct
The discharge outlet of pipeline is connected to the cold medium entrance of three-level heat exchanger；Additionally, it is defeated to draw the 5th from the arrival end of the 1st aqueduct
Waterpipe；4th aqueduct and the 5th aqueduct are all connected to the water inlet of pipe-line mixer；The discharge outlet of pipe-line mixer
It is connected to biochemical pond；
Last person's QI KOU of one-level stripping tower, two grades of stripping towers and stripping adjusting tower is all connected to pickling by last person's feed channel
The air inlet of tower.Exhaust gas recovery system also includes ammonium sulfate recycling can；Pickling tower is connected with ammonium sulfate recycling can.In addition one-level is changed
The steam port that enters of hot device, secondary heat exchanger and three-level heat exchanger is connected to same steam conveying pipe, facilitates mounting arrangements.
Below above-mentioned each formant is discussed in detail：
(1) pretreatment system
The value of calculation of the rate of dissociation of ammonia nitrogen is as shown in the table at different conditions.
| pH | 20℃ | 30℃ | 35℃ |
| 9.0 | 25 | 50 | 58 |
| 9.5 | 60 | 80 | 83 |
| 10.0 | 80 | 90 | 93 |
| 11.0 | 98 | 98 | 98 |
As shown by data in table, when pH value is more than 10, more than 80%, when pH value reaches 11, the rate of dissociation is up to the rate of dissociation
98% and be influenced by temperature little.It can be seen that, the high clearance of ammonia nitrogen to be realized, water body PH and temperature need to be adjusted
This system mainly includes：
PH alkali liquid tank：Adjust water inlet PH.
First-class heat exchanger：Improve inflow temperature
(2) multistage blow-removing system
This system mainly includes：
One-level stripping tower：The ammonia in the maximum removal raw water of the high feature of raw water removal efficiency is utilized in first time stripping
Nitrogen.
Secondary heat exchanger：One-level stripping water outlet supplements heat exchange, so that two grades of strippings is fully reacted.
Two grades of stripping towers：High clearance stripping removes the ammonia nitrogen in raw water again.
Three-level heat exchanger：Two grades of stripping tower water outlets are supplemented with three-level recycling effluent and heat up.
Stripping adjusting tower：Adjust stripping efficiency using stripping adjusting tower, realize removal efficiency and freely adjust in 50%-90%
Section.
In addition, reflux line is installed in the outlet in stripping adjusting tower, reflux line is connected to the cold medium of three-level heat exchanger
Entrance.Install reflux line the reason be：When stripping adjusting tower go out saliva ammonia-nitrogen content up to standard when, backflow carries out one again
Secondary stripping is processed.
Additionally, raw water is mixed with the saliva that goes out of stripping adjusting tower also by the 5th aqueduct, more finally discharge.This kind of side
Formula forms readjustment system.The purpose of readjustment system is：Due to stripping adjusting tower to go out saliva ammonia-nitrogen content extremely low, and PH is higher,
Be not suitable for subsequently being used.Therefore, in this utility model, raw water is mixed with the saliva that goes out of stripping adjusting tower, on the one hand, fall
Low water outlet PH and leaving water temperature, on the other hand, also make water outlet reach the C required for subsequent biochemical:N ratio.
(3) exhaust gas recovery system
This system mainly includes：
Pickling tower：Using the absorption water containing dilute sulfuric acid, absorb the ammonia containing in tail gas, realize tail gas qualified discharge.
Ammonium sulfate recycling can：Reclaim the ammonia sulfate crystal generating in absorbing liquid, realize tail gas resource.
Multistage ammonia aeration technological process is as shown in Figure 2：
Waste water enters pretreatment system, adjusts PH to more than 11 using PH alkali liquid tank and enters first-class heat exchanger, using one-level
Raw water temperature is improved and enters multistage blow-removing system to after 55 DEG C by heat exchanger.
Multistage blow-removing system mainly includes：One-level stripping tower, secondary heat exchanger, two grades of stripping towers, three-level heat exchanger, stripping
Adjusting tower.After one-level stripping, supplementary heating enters two grades of strippings, and two grades of stripping water outlet supplementary heatings enter stripping adjusting tower, open
Open backflow, make removal efficiency reach process necessary requirement, water outlet part backflow, be partly into biochemistry.
In addition, before wastewater effluent, using raw water and H2SO4Stripping water outlet is pulled back to the PH needed for subsequent biochemical, makes water outlet
PH is down to less than 9 it is ensured that water outlet PH and ammonia-nitrogen content meet subsequent biochemical requirement
The tail gas producing in multistage blow-removing system enters pickling tower, is reclaimed using dilution heat of sulfuric acid, realizes tail gas and reach
Mark discharge, enters ammonium recycling can, reclaims generated ammonia sulfate crystal after absorbing liquid cyclic absorption, for agricultural production, realize
Exhaust-gas resource.
In practical application, for realizing the Automated condtrol of whole landfill leachate treatment process it is ensured that at percolate
Reason effect, this utility model additionally provides Aulomatizeted Detect control unit.
Specifically, the arrival end of the 1st aqueduct be provided with 1PH detection sensor, the 1st ammonia nitrogen detection sensor, the 1st
Temperature detection sensor and the 1st flow detection sensor；
The port of export of stripping adjusting tower is provided with 2PH detection sensor, the 2nd ammonia nitrogen detection sensor, the 2nd temperature detection
Sensor and the 2nd flow detection sensor；
The discharge outlet of pipe-line mixer is provided with 3PH detection sensor, the 3rd ammonia nitrogen detection sensor and the 3rd flow
Detection sensor；
The discharge outlet of first-class heat exchanger is provided with the 4th temperature detection sensor；The discharge outlet of secondary heat exchanger is provided with the 5th
Temperature detection sensor；The discharge outlet of three-level heat exchanger is provided with the 6th temperature detection sensor；
The arrival end of the 1st aqueduct is provided with the 1st control valve, the discharge outlet of stripping adjusting tower is provided with the 2nd control
Valve, reflux line are provided with the 3rd control valve, the 5th aqueduct is provided with the 4th control valve；First-class heat exchanger enter steam
Vapour arm is provided with the 5th control valve, the steam branch pipe that enters of secondary heat exchanger is provided with the 6th control valve and three-level heat exchanger
The steam branch pipe that enters the 7th control valve is installed；
1PH detection sensor, the 1st ammonia nitrogen detection sensor, the 1st temperature detection sensor, the 1st flow detection sensing
Device, 2PH detection sensor, the 2nd ammonia nitrogen detection sensor, the 2nd temperature detection sensor, the 2nd flow detection sensor,
3PH detection sensor, the 3rd ammonia nitrogen detection sensor, the 3rd flow detection sensor, the 4th temperature detection sensor, the 5th temperature inspection
Survey sensor, the 6th temperature detection sensor, the 1st control valve, the 2nd control valve, the 3rd control valve, the 4th control valve, the
5 control valves, the 6th control valve and the 7th control valve are all connected to master controller.Master controller is connected to display and leads to
Letter circuit.
In addition, the inside of one-level stripping tower, two grades of stripping towers and stripping adjusting tower is separately mounted to the 1st liquidometer, the 2nd liquid
Position meter and the 3rd liquidometer；The input waterpipe of one-level stripping tower, two grades of stripping towers and stripping adjusting tower is separately installed with the 1st water
Pump, the 2nd water pump and the 3rd water pump；The output waterpipe of stripping adjusting tower is provided with the 4th water pump；
1st liquidometer, the 2nd liquidometer, the 3rd liquidometer, the 1st water pump, the 2nd water pump, the 3rd water pump and the 4th water pump are all connected with
To master controller.
As can be seen here, master controller can real-time detection to raw water entrance and stripping adjusting tower outlet water quality situation, including
PH, ammonia-nitrogen content, temperature and flow；And according to stripping adjusting tower outlet water quality situation, a part backflow, another part with
Raw water mixes according to a certain percentage, reaches and makes the satisfactory purpose of effluent quality.
Temperature detection sensor is installed by the outlet in each heat exchanger, in the steam pipe that enters of each heat exchanger, tune is installed
Whether section valve, the temperature of real-time judge heat exchanger exit water can meet the requirements, if too high or too low for temperature, control into steaming
The open degree of steam pipe valve, so that the temperature of heat exchanger exit water meets require it is ensured that follow-up stripping efficiency.
By installing liquidometer in every grade of stripping tower, the liquid level in each stripping tower is monitored, wants when liquid level reaches
When asking, automatically control the startup of next stage water pump, thus realizing automatically controlling of stripping towers operation at different levels.
Further, since master controller is connected with display and communication equipment, can achieve to whole landfill leachate treatment mistake
The monitoring in all directions of journey is it is ensured that treatment effeciency.
As follows for the long mountain pass in Wuhan percolate from garbage filling field imbalance development project data result：
| Water inlet PH | Influent ammonia nitrogen | Water outlet PH | Water outlet ammonia nitrogen | Ammonia nitrogen removal frank |
| 9.5 | 761.25 | 8.92 | 510.95 | 32.88% |
| 10 | 792.5 | 9.56. | 276.9 | 65.06% |
| 10.5 | 761.25 | 10.07 | 133.75 | 82.43% |
| 11 | 761.25 | 10.48 | 48.64 | 94.94% |
| 11.5 | 761.25 | 10.94 | 7.7 | 99% |
As can be seen here, the multistage ammonia aeration system for processing percolate that this utility model provides, has following
Advantage：
(1) contrast traditional ammonia aeration technique, by increasing readjustment unit, solve percolate C:N is than the problem of imbalance, same
When achieve wastewater treatment capacity reduce, adding of agent is few, operating cost is low, water outlet fouling is few, changing waste into resources, water quality adjustment model
Enclose big treatment effect, enable large-scale engineeringization application, solve landfill leachate treatment hardly possible, processing cost is high
Feature.
(2) can achieve to the monitoring in all directions of whole landfill leachate treatment process it is ensured that treatment effeciency.
The above is only preferred implementation of the present utility model it is noted that common skill for the art
For art personnel, on the premise of without departing from this utility model principle, some improvements and modifications can also be made, these improve and
Retouching also should regard protection domain of the present utility model.
Claims (3)
1. a kind of multistage ammonia aeration system for processing percolate is it is characterised in that including pretreatment system, multistage blowing
De- system and exhaust gas recovery system；
Described pretreatment system includes PH alkali liquid tank and first-class heat exchanger；Described multistage blow-removing system include one-level stripping tower, two
Level heat exchanger, two grades of stripping towers, three-level heat exchanger and stripping adjusting tower；Described exhaust gas recovery system includes pickling tower；
Raw water is connected to the water inlet of described one-level stripping tower by the 1st aqueduct；Series connection institute on described 1st aqueduct
State PH alkali liquid tank and described first-class heat exchanger；
The discharge outlet of described one-level stripping tower is connected to the water inlet of described two grades of stripping towers by the 2nd aqueduct；Described
Connect on 2nd aqueduct described secondary heat exchanger；
The discharge outlet of described two grades of stripping towers is connected to the water inlet of described stripping adjusting tower by the 3rd aqueduct；Described
Connect on 3rd aqueduct described three-level heat exchanger；
The discharge outlet of described stripping adjusting tower is connected with the 4th aqueduct；Draw reflux line from described 4th aqueduct,
The discharge outlet of described reflux line is connected to the cold medium entrance of described three-level heat exchanger；Additionally, from described 1st aqueduct
Arrival end draws the 5th aqueduct；Described 4th aqueduct and described 5th aqueduct are all connected to entering of pipe-line mixer
The mouth of a river；The discharge outlet of described pipe-line mixer is connected to biochemical pond；
Last person's QI KOU of described one-level stripping tower, described two grades of stripping towers and described stripping adjusting tower is all by last person's feed channel even
It is connected to the air inlet of described pickling tower.
2. the multistage ammonia aeration system for processing percolate according to claim 1 is it is characterised in that described tail
Gas recovery system also includes ammonium sulfate recycling can；Described pickling tower is connected with described ammonium sulfate recycling can.
3. the multistage ammonia aeration system for processing percolate according to claim 1 is it is characterised in that described one
The steam port that enters of level heat exchanger, described secondary heat exchanger and described three-level heat exchanger is connected to same steam conveying pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620954153.4U CN205974193U (en) | 2016-08-26 | 2016-08-26 | A multistage ammonia stripping system for refuse disposal filtration liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620954153.4U CN205974193U (en) | 2016-08-26 | 2016-08-26 | A multistage ammonia stripping system for refuse disposal filtration liquid |
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| Publication Number | Publication Date |
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| CN205974193U true CN205974193U (en) | 2017-02-22 |
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ID=58036432
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620954153.4U Active CN205974193U (en) | 2016-08-26 | 2016-08-26 | A multistage ammonia stripping system for refuse disposal filtration liquid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107487802A (en) * | 2017-09-07 | 2017-12-19 | 北京赛科康仑环保科技有限公司 | A kind of recycling processing method of high ammonia nitrogen and high salt waste water |
| CN108190989A (en) * | 2017-12-28 | 2018-06-22 | 华中科技大学 | A kind of ammonia nitrogen removal method and device suitable for high ammonia-nitrogen wastewater |
-
2016
- 2016-08-26 CN CN201620954153.4U patent/CN205974193U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107487802A (en) * | 2017-09-07 | 2017-12-19 | 北京赛科康仑环保科技有限公司 | A kind of recycling processing method of high ammonia nitrogen and high salt waste water |
| CN108190989A (en) * | 2017-12-28 | 2018-06-22 | 华中科技大学 | A kind of ammonia nitrogen removal method and device suitable for high ammonia-nitrogen wastewater |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 809 and 810, 8 / F, Chuangye building (Building 2, Xinghua Industrial Park), No.58, Second Street, Zhengzhou area (Jingkai), Henan pilot Free Trade Zone, Zhengzhou City, Henan Province, 450000 Patentee after: Shengao Lande Environmental Protection Technology Group Co.,Ltd. Address before: 450000 Zhengzhou economic and Technological Development Zone, Henan, 8, 809 and 810, No. 2, No. 2, Xinghua science and Technology Industrial Park. Patentee before: Land Environmental Protection Technology Group Co.,Ltd. |