CN204848527U - High -concentration ammonia nitrogen waste water ammonia blows and takes off and resourceful treatment system - Google Patents
High -concentration ammonia nitrogen waste water ammonia blows and takes off and resourceful treatment system Download PDFInfo
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- CN204848527U CN204848527U CN201520556411.9U CN201520556411U CN204848527U CN 204848527 U CN204848527 U CN 204848527U CN 201520556411 U CN201520556411 U CN 201520556411U CN 204848527 U CN204848527 U CN 204848527U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a high -concentration ammonia nitrogen waste water ammonia blows and takes off and resourceful treatment system, blow including processing unit in advance, the ammonia that connects gradually and take off unit and back processing unit, ammonia blow to take off and be equipped with water inlet, delivery port and exhaust outlet on the unit, exhaust outlet and a resource unit link to each other, back processing unit pond, pH readjustment pond, outlet water pool in the middle of the second that connects gradually, outlet water pool on be connected with the waste heat recovery unit, the second in the middle of entry and the delivery port in pond link to each other. The utility model aims at providing a blow through high temperature and take off high -concentration ammonia nitrogen waste water and to blowing the high -concentration ammonia nitrogen waste water ammonia blows and takes off and resourceful treatment system that deamination gas carries out recycle.
Description
Technical field
The utility model relates to high-concentration ammonia nitrogenous wastewater processing technology field, particularly a kind of high-concentration ammonia nitrogenous wastewater ammonia aeration and recycling treatment system.
Background technology
Because high-concentration ammonia nitrogenous wastewater (as percolate, wastewater from chemical industry etc.) is large to environmental hazard, and be difficult to process, for meeting the requirement that the public improves constantly environmental quality, country has worked out more and more stricter emission standard to ammonia nitrogen, and exploiting economy, efficiently denitride technology have become emphasis and the focus of water pollutions engineering field.
In recent years, more research had been carried out to ammonia nitrogen waste water process aspect both at home and abroad.Although many methods effectively can remove ammonia nitrogen, real only have a few for high concentrated organic wastewater process.In high-concentration ammonia nitrogenous wastewater industry, particularly landfill leachate treatment industry, ammonia nitrogen is up to more than 3000mg/L, and pretreatment process available at present has ammonia aeration, stripping and chemical method (MAP) etc.Chemical method (MAP) is too high due to expense, seldom adopts in high-concentration ammonia nitrogenous wastewater industry; Gas stripping process is due to needs steam, and in the place not having steam source, need to build boiler, construction program and costly, running cost is also high, therefore limited more., after adopting air that ammonia is transferred to gas phase, there is the problem of secondary pollution in traditional ammonia aeration method; And large-minded after stripping, often adopt sulfuric acid absorption; Even if adopt sulfuric acid absorption to generate ammonium sulfate, also there is ammonium sulfate process and dispose difficult problem, working conditions has certain limitation.
In the case, this patent adopts follow-on ammonia aeration system, adopts high temperature stripping, greatly reduces the output of stripping gas; And increase the absorption system of stripping gas, the ammonia of gas phase is reclaimed, finally generates sales volume extensively and the ammoniacal liquor had an economic benefit.Thus solve all drawbacks of traditional ammonia aeration system existence, avoid secondary pollution, reduce running cost, expand range of application.
In addition, this patent makes full use of the low cost such as used heat, waste heat thermal source and heats up to high concentrated organic wastewater, and adopt the heat of multiple heat recovery system to system to recycle, the running cost of whole system is reduced further, thus makes the generalization of this technology and applied more extensive.
Utility model content
The purpose of this utility model is to provide a kind of high-concentration ammonia nitrogenous wastewater ammonia aeration of recycling by high temperature stripping high-concentration ammonia nitrogenous wastewater and to stripping ammonia and recycling treatment system.
The technical scheme that the utility model provides is: a kind of high-concentration ammonia nitrogenous wastewater ammonia aeration and recycling treatment system, comprise the pretreatment unit connected successively, ammonia aeration unit and post-processing unit, described ammonia aeration unit is provided with water-in, water outlet and waste gas outlet, described waste gas outlet is connected with a resource utilization unit, described post-processing unit comprises the second intermediate pool connected successively, pH adjusts back pond, outlet sump, described outlet sump is connected with waste heat recovery unit, the entrance of the second described intermediate pool is connected with described water outlet, described water-in is connected with the outlet of pretreatment unit, described resource utilization unit comprises ammonia recycling device, described ammonia recycling device is provided with refrigerating unit, described ammonia recycling device is provided with leakage fluid dram, inlet mouth and venting port, and described inlet mouth is connected with described waste gas outlet, and described venting port is connected with air.Described pretreatment unit is for regulating waste water ph and the useless impurities in water of precipitation, and described refrigerating unit is for cooling the liquid in ammonia recycling device.
In above-mentioned high-concentration ammonia nitrogenous wastewater ammonia aeration and recycling treatment system, described pretreatment unit comprise connect successively pump sump, pH adjust pond, coagulation basin, settling tank, the first intermediate pool, the outlet of the first described intermediate pool is connected with the water-in of described ammonia aeration unit.
In above-mentioned high-concentration ammonia nitrogenous wastewater ammonia aeration and recycling treatment system, described ammonia aeration unit comprises Ammonia blowing-out tower, described water-in, water outlet and waste gas outlet are arranged on Ammonia blowing-out tower, described Ammonia blowing-out tower is provided with heating unit, described heating unit is connected with described waste heat recovery unit, aerating system is provided with in described Ammonia blowing-out tower, described aerating system is connected with gas blower, described Ammonia blowing-out tower is provided with pH meter, ultrasonic level gage, temperature control meter, tensimeter, water mist separator is provided with between described Ammonia blowing-out tower and resource utilization unit.
In above-mentioned high-concentration ammonia nitrogenous wastewater ammonia aeration and recycling treatment system, described waste heat recovery unit comprises the first waste-heat recovery device be connected with outlet sump and the second waste-heat recovery device producing waste heat for reclaiming on-site, and the first described waste-heat recovery device and the second waste-heat recovery device are connected to described heating unit respectively.
In above-mentioned high-concentration ammonia nitrogenous wastewater ammonia aeration and recycling treatment system, described pH adjustment pond, coagulation basin, pH adjust back in pond and are equipped with whipping appts, described pH adjusts pond and is provided with adder-subtractor, described pH adjusts back pond and is provided with means for feeding acid, and described coagulation basin is provided with coagulant drug-adding device.
In above-mentioned high-concentration ammonia nitrogenous wastewater ammonia aeration and recycling treatment system, described ammonia recycling device comprises the ammonia absorber, the sulfuric acid absorption tower that connect successively, described inlet mouth is arranged on ammonia absorber, described leakage fluid dram is arranged on ammonia absorber, and described venting port is arranged on sulfuric acid absorption tower.
In above-mentioned high-concentration ammonia nitrogenous wastewater ammonia aeration and recycling treatment system, described ammonia absorber is connected with water-circulating pump, described sulfuric acid absorption tower is provided with sulfuric acid recycle pump.
In above-mentioned high-concentration ammonia nitrogenous wastewater ammonia aeration and recycling treatment system, in described Ammonia blowing-out tower, be provided with anti-dry burning device.
The invention also discloses a kind of the high-concentration ammonia nitrogenous wastewater ammonia aeration and the recycling processing method that adopt above-mentioned treatment system, comprise the steps:
Step 1: regulate waste water ph by pretreatment unit and the useless impurities in water of precipitation;
Step 2: join in ammonia aeration unit by the waste water after processing through step 1, is separated ammonia wherein; Wherein, ammonia enters ammonia recycling device recovery;
Step 3: the waste water after processing through step 2 is joined adjust ph in post-processing unit, and reclaims the heat in waste water, the heat of recovery turns back in step 2, as the part of heat energy of ammonia aeration unit.
In above-mentioned high-concentration ammonia nitrogenous wastewater ammonia aeration and recycling processing method,
Described step 1 comprises:
S1: handled high-concentration ammonia nitrogenous wastewater enters pump sump, stirring and evenly mixing carries out homogenizing water quality;
S2: pump sump water outlet enters in pH adjustment pond through promoting, and adds alkali and regulates, stir, make wastewater pH reach 10-11;
S3:pH adjusts pond water outlet and enters coagulation basin, and dosing coagulant carries out dosing stirring;
S4: coagulation basin water outlet enters settling tank and carries out coagulating sedimentation;
S5: settling tank water outlet gravity flow enters the first intermediate pool, carries out centre and promotes;
Described step 2 comprises:
The water outlet of the S6: the first intermediate pool is promoted to Ammonia blowing-out tower, by the heating unit be connected with waste heat recovery unit, waste water is heated to 40 ~ 90 DEG C; And add denitrfying agent stripping ammonia to resource utilization unit;
S7: the ammonia nitrogen in waste water, after the design load reaching emission standard requirement, stops heating and stripping; Ammonia blowing-out tower water outlet Quick drainage and gravity flow enter the second intermediate pool carry out centre lifting;
S10: Ammonia blowing-out tower stripping tail gas cools through apparatus for supercooling, cooled Ammonia blowing-out tower stripping tail gas enters ammonia recycling device, reclaims and makes the weak ammonia that mass concentration is more than 5%, tail gas qualified discharge
Described step 3 comprises:
S8: the second intermediate pool water outlet is promoted to pH and adjusts back pond, and carry out pH readjustment by adding sulfuric acid, pH adjusts back 6-9;
S9:pH adjusts back pond water outlet gravity flow and enters outlet sump, carries out heat exchange and reclaim heat, water Chinese effluent after heat exchange of outlet sump under the effect of waste heat recovery unit.
The utility model is after employing technique scheme, and its beneficial effect had is:
As can be seen from the above-mentioned technical scheme provided, the treatment system of the utility model embodiment, by pump sump, pH adjustment pond, coagulation basin, settling tank, intermediate pool 1, medicine system, ammonia aeration system, intermediate pool 2, pH readjustment pond, outlet sump, ammonia recycling device, heating system, residual neat recovering system, cooling system organic assembling, high-concentration ammonia nitrogenous wastewater is processed, ammonia nitrogen in effective removal water, makes water outlet lower than preset limit value; And the recycling of stripping ammonia is achieved by recycling system, the method technical process is simple, treatment effect stable, working cost is lower, the rate of recovery is high.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment 1 flow diagram;
Fig. 2 is the structural representation of the utility model embodiment 1 ammonia aeration unit;
Fig. 3 is the structural representation of the utility model embodiment 1 resource utilization unit.
Embodiment
Below in conjunction with embodiment, the technical solution of the utility model is described in further detail, but does not form any restriction of the present utility model.
Embodiment 1:
As Fig. 1, shown in Fig. 2 and Fig. 3, a kind of high-concentration ammonia nitrogenous wastewater ammonia aeration and recycling treatment system, comprise the pretreatment unit 1 connected successively, ammonia aeration unit 2 and post-processing unit 3, described pretreatment unit 1 is for regulating waste water ph and the useless impurities in water of precipitation, described ammonia aeration unit 2 is provided with water-in, water outlet and waste gas outlet, described waste gas outlet is connected with a resource utilization unit 4, described post-processing unit 3 comprises the second intermediate pool 31 connected successively, pH adjusts back pond 32, outlet sump 33, described outlet sump 33 is connected with waste heat recovery unit 5, the second described intermediate pool 31 is connected with water outlet, described water-in is connected with the outlet of pretreatment unit 1, described resource utilization unit 4 comprises ammonia recycling device 41, and described ammonia recycling device 41 is provided with the refrigerating unit 46 for cooling the liquid in ammonia recycling device 41, and described ammonia recycling device 41 is provided with leakage fluid dram, inlet mouth and venting port, described inlet mouth is connected with waste gas outlet, and described venting port is connected with air, and described pretreatment unit 1 comprises the pump sump 11 connected successively, pH adjusts pond 12, coagulation basin 13, settling tank 14, first intermediate pool 15, the outlet of the first described intermediate pool 15 is connected with water-in, and described ammonia aeration unit 2 comprises gas blower 21, Ammonia blowing-out tower 22, aerating system 23, pH meter 24, ultrasonic level gage 25, temperature control meter 26, tensimeter 27, water mist separator 28, heating unit 29, specifically, described Ammonia blowing-out tower 22 is provided with heating unit 29, and described heating unit 29 is connected with waste heat recovery unit 5, necessarily, this heating unit 29 is also connected with the heating system 30 in the external world, in order to when waste heat recovery unit 5 heat supply deficiency, be connected by the heating system 30 in the external world, in described Ammonia blowing-out tower 22, be provided with aerating system 23, described aerating system 23 is connected with gas blower 21, and described Ammonia blowing-out tower 22 is provided with pH meter 24, ultrasonic level gage 25, temperature control meter 26, tensimeter 27, is provided with water mist separator 28 between described Ammonia blowing-out tower 22 and resource utilization unit 4.Described waste heat recovery unit 5 comprises the first waste-heat recovery device be connected with outlet sump 33 and the second waste-heat recovery device producing waste heat for reclaiming on-site.Described pH adjusts pond 12, coagulation basin 13, pH adjusts back in pond 32 and is equipped with whipping appts, described pH adjusts pond 12 and is provided with adder-subtractor, described pH adjusts back pond 32 and is provided with means for feeding acid, described coagulation basin 13 is provided with coagulant drug-adding device, described ammonia recycling device 41 comprises the ammonia absorber 42 connected successively, sulfuric acid absorption tower 43, described inlet mouth is arranged on ammonia absorber 42, described leakage fluid dram is arranged on ammonia absorber 42, described venting port is arranged on sulfuric acid absorption tower 43, described ammonia absorber is connected with water-circulating pump 44, described sulfuric acid absorption tower 43 is provided with sulfuric acid recycle pump 45.Specific in the present embodiment, the quantity of ammonia absorber 42 is 3, and be series connection, the quantity of sulfuric acid absorption tower 43 is two, is series connection.Solution after sulfuric acid absorption tower 43 absorbs enters ammonium sulfate storage tank 46.
In the present embodiment, anti-dry burning device is provided with in described Ammonia blowing-out tower 22.
Specifically, in actual applications, the concrete working method of the present embodiment is:
Step 1: regulate waste water ph by pretreatment unit and the useless impurities in water of precipitation;
Described step 1 comprises:
S1: handled high-concentration ammonia nitrogenous wastewater enters pump sump 11, stirring and evenly mixing carries out homogenizing water quality;
S2: pump sump water outlet enters in pH adjustment pond 12 through promoting, and adds alkali and regulates, stir, make wastewater pH reach 10-11;
S3:pH adjusts pond water outlet and enters coagulation basin 13, and dosing coagulant carries out dosing stirring;
S4: coagulation basin 13 water outlet enters settling tank 14 and carries out coagulating sedimentation;
S5: settling tank water outlet gravity flow enters the first intermediate pool 15, carries out centre and promotes;
Step 2: join in ammonia aeration unit 2 by the waste water after processing through step 1, is separated ammonia wherein; Wherein, ammonia enters ammonia recycling device 41 and reclaims;
Described step 2 specifically comprises:
The water outlet of the S6: the first intermediate pool is promoted to Ammonia blowing-out tower 22, by the heating unit 29 be connected with waste heat recovery unit 5, waste water is heated to 40 ~ 90 DEG C; And add denitrfying agent stripping ammonia to resource utilization unit 4;
S7: the ammonia nitrogen in waste water, after the design load reaching emission standard requirement, stops heating and stripping; Ammonia blowing-out tower 22 water outlet Quick drainage and gravity flow enter the second intermediate pool 31 carry out centre lifting;
S10: Ammonia blowing-out tower 22 stripping tail gas cools through apparatus for supercooling 46, cooled Ammonia blowing-out tower 22 stripping tail gas enters ammonia recycling device 41, reclaims and makes the weak ammonia that mass concentration is more than 5%, tail gas qualified discharge;
Step 3: the waste water after processing through step 2 is joined adjust ph in post-processing unit 3, and reclaims the heat in waste water, the heat of recovery turns back in step 2, as the part of heat energy of ammonia aeration unit.
Described step 3 comprises:
S8: the second intermediate pool 31 water outlet is promoted to pH and adjusts back pond 32, and carry out pH readjustment by adding sulfuric acid, pH adjusts back 6-9;
S9:pH adjusts back pond 32 water outlet gravity flow and enters outlet sump 33, carries out heat exchange and reclaim heat, water Chinese effluent after heat exchange of outlet sump 33 under the effect of waste heat recovery unit 5.
The scheme of employing the present embodiment effectively can remove the ammonia nitrogen in water, makes water outlet lower than preset limit value; And the recycling of stripping ammonia is achieved by recycling system, the method technical process is simple, treatment effect stable, working cost is lower, the rate of recovery is high.
Above-described embodiment is the utility model preferably embodiment; but embodiment of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from spirit of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (8)
1. a high-concentration ammonia nitrogenous wastewater ammonia aeration and recycling treatment system, comprise the pretreatment unit (1) connected successively, ammonia aeration unit (2) and post-processing unit (3), it is characterized in that: described ammonia aeration unit (2) is provided with water-in, water outlet and waste gas outlet, described waste gas outlet is connected with a resource utilization unit (4), described post-processing unit (3) comprises the second intermediate pool (31) connected successively, pH adjusts back pond (32), outlet sump (33), described outlet sump (33) is connected with waste heat recovery unit (5), the entrance of described the second intermediate pool (31) is connected with described water outlet, described water-in is connected with the outlet of pretreatment unit (1), described resource utilization unit (4) comprises ammonia recycling device (41), described ammonia recycling device (41) is provided with refrigerating unit (46), described ammonia recycling device (41) is provided with leakage fluid dram, inlet mouth and venting port, described inlet mouth is connected with described waste gas outlet, and described venting port is connected with air.
2. high-concentration ammonia nitrogenous wastewater ammonia aeration according to claim 1 and recycling treatment system, it is characterized in that: described pretreatment unit (1) comprises the pump sump (11), pH adjustment pond (12), coagulation basin (13), settling tank (14), the first intermediate pool (15) that connect successively, and the outlet of described the first intermediate pool (15) is connected with the water-in of described ammonia aeration unit (2).
3. high-concentration ammonia nitrogenous wastewater ammonia aeration according to claim 1 and recycling treatment system, it is characterized in that: described ammonia aeration unit (2) comprises Ammonia blowing-out tower (22), described water-in, water outlet and waste gas outlet are arranged on Ammonia blowing-out tower (22), described Ammonia blowing-out tower (22) is provided with heating unit (29), described heating unit (29) is connected with described waste heat recovery unit (5), aerating system (23) is provided with in described Ammonia blowing-out tower (22), described aerating system (23) is connected with a gas blower (21), described Ammonia blowing-out tower (22) is provided with pH meter (24), ultrasonic level gage (25), temperature control meter (26), tensimeter (27), water mist separator (28) is provided with between described Ammonia blowing-out tower (22) and resource utilization unit (4).
4. high-concentration ammonia nitrogenous wastewater ammonia aeration according to claim 3 and recycling treatment system, it is characterized in that: described waste heat recovery unit (5) comprises the first waste-heat recovery device be connected with outlet sump (33) and the second waste-heat recovery device producing waste heat for reclaiming on-site, and the first described waste-heat recovery device and the second waste-heat recovery device are connected to described heating unit (29) respectively.
5. high-concentration ammonia nitrogenous wastewater ammonia aeration according to claim 2 and recycling treatment system, it is characterized in that: described pH adjusts in pond (12), coagulation basin (13), pH readjustment pond (32) and is equipped with whipping appts, described pH adjusts pond (12) and is provided with adder-subtractor, described pH adjusts back pond (32) and is provided with means for feeding acid, and described coagulation basin (13) is provided with coagulant drug-adding device.
6. high-concentration ammonia nitrogenous wastewater ammonia aeration as claimed in any of claims 1 to 5 and recycling treatment system, it is characterized in that: described ammonia recycling device (41) comprises the ammonia absorber (42), the sulfuric acid absorption tower (43) that connect successively, described inlet mouth is arranged on ammonia absorber (42), described leakage fluid dram is arranged on ammonia absorber (42), and described venting port is arranged on sulfuric acid absorption tower (43).
7. high-concentration ammonia nitrogenous wastewater ammonia aeration according to claim 6 and recycling treatment system, it is characterized in that: described ammonia absorber (42) is connected with water-circulating pump (44), described sulfuric acid absorption tower (43) is provided with sulfuric acid recycle pump (45).
8. high-concentration ammonia nitrogenous wastewater ammonia aeration according to claim 1 and recycling treatment system, is characterized in that: be provided with anti-dry burning device in described Ammonia blowing-out tower (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520556411.9U CN204848527U (en) | 2015-07-27 | 2015-07-27 | High -concentration ammonia nitrogen waste water ammonia blows and takes off and resourceful treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520556411.9U CN204848527U (en) | 2015-07-27 | 2015-07-27 | High -concentration ammonia nitrogen waste water ammonia blows and takes off and resourceful treatment system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986899A (en) * | 2015-07-27 | 2015-10-21 | 广州华浩能源环保集团有限公司 | High-concentration ammonia-nitrogen wastewater ammonia stripping and resourceful treatment system and treatment method |
| CN106746194A (en) * | 2016-12-09 | 2017-05-31 | 苏州纳贝通环境科技有限公司 | A kind of processing method of nitrogen-containing wastewater |
| CN112794339A (en) * | 2020-12-25 | 2021-05-14 | 中国科学院城市环境研究所 | Method and device for recovering ammonia in liquid |
-
2015
- 2015-07-27 CN CN201520556411.9U patent/CN204848527U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986899A (en) * | 2015-07-27 | 2015-10-21 | 广州华浩能源环保集团有限公司 | High-concentration ammonia-nitrogen wastewater ammonia stripping and resourceful treatment system and treatment method |
| CN104986899B (en) * | 2015-07-27 | 2017-06-20 | 广州华浩能源环保集团有限公司 | High-concentration ammonia nitrogenous wastewater ammonia aeration and recycling treatment system and processing method |
| CN106746194A (en) * | 2016-12-09 | 2017-05-31 | 苏州纳贝通环境科技有限公司 | A kind of processing method of nitrogen-containing wastewater |
| CN112794339A (en) * | 2020-12-25 | 2021-05-14 | 中国科学院城市环境研究所 | Method and device for recovering ammonia in liquid |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20151209 Effective date of abandoning: 20170620 |
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| AV01 | Patent right actively abandoned |