CN109850974B - Sewage treatment deodorization method - Google Patents
Sewage treatment deodorization method Download PDFInfo
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- CN109850974B CN109850974B CN201910061983.2A CN201910061983A CN109850974B CN 109850974 B CN109850974 B CN 109850974B CN 201910061983 A CN201910061983 A CN 201910061983A CN 109850974 B CN109850974 B CN 109850974B
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- 239000010865 sewage Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000004332 deodorization Methods 0.000 title claims abstract description 22
- 239000000945 filler Substances 0.000 claims abstract description 59
- 239000007921 spray Substances 0.000 claims abstract description 11
- 238000009688 liquid atomisation Methods 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 239000011152 fibreglass Substances 0.000 claims abstract description 5
- 238000005086 pumping Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 241000196324 Embryophyta Species 0.000 claims description 28
- 238000005507 spraying Methods 0.000 claims description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 239000010802 sludge Substances 0.000 claims description 19
- 239000011550 stock solution Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- -1 rare earth isooctanoate Chemical class 0.000 claims description 9
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 9
- 241001465382 Physalis alkekengi Species 0.000 claims description 7
- 244000307697 Agrimonia eupatoria Species 0.000 claims description 6
- 235000000125 common agrimony Nutrition 0.000 claims description 6
- 238000011081 inoculation Methods 0.000 claims description 6
- 241001233914 Chelidonium majus Species 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000032770 biofilm formation Effects 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 239000000243 solution Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 235000019354 vermiculite Nutrition 0.000 claims description 4
- 229910052902 vermiculite Inorganic materials 0.000 claims description 4
- 239000010455 vermiculite Substances 0.000 claims description 4
- 241000096270 Swertia leducii Species 0.000 claims description 3
- 244000038594 Phyllanthus urinaria Species 0.000 claims description 2
- 241000691803 Urobatis jamaicensis Species 0.000 claims description 2
- 241000331449 Vincetoxicum pycnostelma Species 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 241001278836 Agrimonia pilosa Species 0.000 claims 1
- 235000000641 Agrimonia pilosa Nutrition 0.000 claims 1
- 241000931332 Cymbopogon Species 0.000 claims 1
- FEPOUSPSESUQPD-UHFFFAOYSA-N Cymbopogon Natural products C1CC2(C)C(C)C(=O)CCC2C2(C)C1C1(C)CCC3(C)CCC(C)C(C)C3C1(C)CC2 FEPOUSPSESUQPD-UHFFFAOYSA-N 0.000 claims 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract description 2
- 229910021529 ammonia Inorganic materials 0.000 abstract description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 235000019645 odor Nutrition 0.000 description 21
- 239000007789 gas Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 241001530209 Swertia Species 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000013543 active substance Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000005842 biochemical reaction Methods 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Treating Waste Gases (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention discloses a sewage treatment deodorization method, which comprises the following operation steps: (1) covering and sealing the upper part of the sewage treatment tank, heating the sewage, and pumping out odor above the sewage by adopting a glass fiber reinforced plastic high-pressure fan; (2) the extracted odor passes through the biological filler layer by layer from top to bottom; (3) and (3) treating the odor treated by the biological filler layer by using a plant liquid atomization spray tower, and then discharging. The sewage treatment deodorization method provided by the invention has the advantages of low operation cost, high treatment efficiency and no secondary pollution, and the removal rate of hydrogen sulfide and ammonia in odor can reach more than 95%.
Description
Technical Field
The invention belongs to the technical field of livestock husbandry garbage treatment, and particularly relates to a sewage treatment and deodorization method.
Background
The stink is widely generated in the processes of industrial and agricultural production, sewage treatment, sludge treatment and garbage disposal. The malodorous substances are wide in distribution and large in influence range, and become public hazards in some countries. Malodorous gas emitted by a sewage treatment plant is gas with extremely complex components and mainly comes from sewage and sludge treatment processes. The high-concentration malodorous gas mainly comes from oil separation, air flotation, sludge dewatering and RBF tank, and the low-concentration malodorous gas mainly comes from biochemical tank. The biological deodorization method is developed in the middle of the 20 th century, and after the development of 30 years, people gradually have gained acceptance on the effect of the biological deodorization method, and the biological deodorization method is widely applied to various deodorization fields and gradually becomes one of the more main deodorization technologies. The deodorization principle is that the odor is degraded by biochemical reaction generated by microorganisms, so that the odor is converted into odorless and harmless gas after the biochemical reaction, and the purpose of treating the odor can be achieved. At present, in the field of sewage treatment, a biological deodorization method is adopted for some odors with complex components and high odor concentration. However, in the prior art, when the biological deodorization technology is adopted to treat waste gas in the sewage treatment process, the acid and alkali resistance of the biological packing layer is poor, and the water retention performance and the film forming performance are poor, so that the odor emission in the sewage treatment cannot reach the standard.
Disclosure of Invention
In order to solve the technical problems, the invention provides a sewage treatment deodorization method, which effectively improves the quality of a biological filler layer by modifying the filler, and greatly reduces the content of malodorous substances in the discharged gas by treating the odor by a plant liquid atomization spray tower after biological deodorization.
The invention is realized by the following technical scheme.
A sewage treatment deodorization method comprises the following operation steps:
(1) covering and sealing the upper part of the sewage treatment tank, raising the temperature of the sewage to 38-46 ℃, and pumping out odor above the sewage by adopting a glass fiber reinforced plastic high-pressure fan;
(2) the extracted odor passes through a biological filler layer from top to bottom, wherein the biological filler layer is prepared by the following method: uniformly mixing diatomite and rare earth isooctanoate according to the mass ratio of 2-5, putting the mixture into an oven at 85-90 ℃, carrying out heat preservation treatment for 30-40min to obtain modified diatomite, uniformly mixing the modified diatomite and filler particles according to the mass ratio of 1: 8-10 to obtain a filler, and carrying out inoculation and domestication on the filler by adopting activated sludge to obtain a biological filler layer;
(3) treating odor treated by the biological filler layer by using a plant liquid atomization spray tower, and then discharging, wherein the plant stock solution used by the plant liquid atomization spray tower is prepared from the following components in parts by weight: 18-25 parts of paniculate swallowwort root, 28-34 parts of palm skin, 30-35 parts of hairyvein agrimony, 48-60 parts of physalis alkekengi, 68-70 parts of pearl grass and 40-50 parts of swertia mileensis.
Specifically, in the step (2), the rare earth isooctanoate is a light yellow liquid, and the content of the effective substances is 8%.
Specifically, in the step (2), the height of the biological filler layer is 1.0-1.2 m.
Specifically, in the step (2), the filler particles are prepared from the following components in parts by weight: 58-64 parts of biochar, 30-35 parts of vermiculite and 8-12 parts of diatomite.
Specifically, in the step (2), the inoculation and acclimatization of the activated sludge is performed by: uniformly spraying the activated sludge mixed liquor on the upper surface of the filler, collecting the activated sludge mixed liquor in a water tank at the bottom of the filler after flowing through the filler, starting a spraying circulating pump, adjusting operation parameters according to the designed spraying density, keeping the operation, gradually finishing biofilm formation of the mixed liquor in the circulating spraying process, and finally preparing the biological filler layer.
Specifically, in the step (3), the cynanchum paniculatum, the palm skin, the agrimony, the physalis alkekengi, the phyllanthus urinaria and the swertia mileensis are mixed and crushed, then are extracted by absolute ethyl alcohol to obtain a plant stock solution, and the plant stock solution is diluted by 3000 times of water by 2000 times and then is sprayed by a plant solution atomization spraying tower.
According to the technical scheme, the beneficial effects of the invention are as follows:
the sewage treatment deodorization method provided by the invention has the advantages of low operation cost, high treatment efficiency and no secondary pollution, and the removal rate of hydrogen sulfide and ammonia in odor can reach more than 95%. According to the invention, rare earth isooctanoate is adopted to modify the diatomite in the step (2), so that the water retention performance of the modified diatomite can be effectively improved, the adhesion rate of microorganisms on the surface of the diatomite can be improved, and the film forming effect of the filler is effectively improved; the biochar in the filler has excellent acid and alkali resistance; the plant stock solution provided by the invention has the advantages of low cost and high content of conjugated double bonds, can effectively improve the reaction activity of peculiar smell molecules, enables the peculiar smell molecules to react with oxygen at normal temperature and then be removed, has good dispersion effect in water, can form large liquid drops in water, and can fully contact and react with the peculiar smell molecules in odor.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The conditions used in the examples may be further adjusted according to the manufacturer's conditions, and the unexplained conditions are generally conventional experimental conditions.
Example 1
A sewage treatment deodorization method comprises the following operation steps:
(1) covering and sealing the upper part of the sewage treatment tank, raising the temperature of the sewage to 38 ℃, and pumping out odor above the sewage by adopting a glass fiber reinforced plastic high-pressure fan;
(2) the extracted odor passes through a biological filler layer from top to bottom, wherein the biological filler layer is prepared by the following method: uniformly mixing diatomite and rare earth isooctanoate according to a mass ratio of 2, placing the mixture into an oven at 85 ℃, and performing heat preservation treatment for 30min to obtain modified diatomite, wherein the rare earth isooctanoate is light yellow liquid, the content of active substances is 8%, uniformly mixing the modified diatomite and filler particles according to a mass ratio of 1: 8 to obtain a filler, and performing inoculation and acclimation on the filler by adopting activated sludge to obtain a biological filler layer, wherein the height of the biological filler layer is 1.0m, and the filler particles are prepared from the following components in parts by weight: 58 parts of biochar, 30 parts of vermiculite and 8 parts of diatomite; the operation of inoculating and domesticating the activated sludge comprises the following steps: uniformly spraying the activated sludge mixed liquor on the upper surface of the filler, collecting the activated sludge mixed liquor in a water tank at the bottom of the filler after flowing through the filler, starting a spraying circulating pump, adjusting operation parameters according to the designed spraying density, keeping the operation, gradually finishing biofilm formation of the mixed liquor in the circulating spraying process, and finally preparing the biological filler layer.
(3) Treating odor treated by the biological filler layer by using a plant liquid atomization spray tower, and then discharging, wherein the plant stock solution used by the plant liquid atomization spray tower is prepared from the following components in parts by weight: the preparation method comprises the following steps of mixing and crushing 18 parts of paniculate swallowwort root, 28 parts of palm skin, 30 parts of hairyvein agrimony, 48 parts of physalis alkekengi, 68 parts of common leafflower herb and 40 parts of common swertia herb, then leaching with absolute ethyl alcohol to obtain a plant stock solution, diluting the plant stock solution with water by 2000 times, and spraying odor by using a plant solution atomization spraying tower.
Example 2
A sewage treatment deodorization method comprises the following operation steps:
(1) covering and sealing the upper part of the sewage treatment tank, raising the temperature of the sewage to 46 ℃, and pumping out odor above the sewage by adopting a glass fiber reinforced plastic high-pressure fan;
(2) the extracted odor passes through a biological filler layer from top to bottom, wherein the biological filler layer is prepared by the following method: uniformly mixing diatomite and rare earth isooctanoate according to a mass ratio of 5, putting the mixture into a drying oven at 90 ℃, and performing heat preservation treatment for 40min to obtain modified diatomite, wherein the rare earth isooctanoate is light yellow liquid, the content of active substances is 8%, uniformly mixing the modified diatomite and filler particles according to a mass ratio of 1: 10 to obtain a filler, and performing inoculation and acclimation on the filler by adopting activated sludge to obtain a biological filler layer, wherein the height of the biological filler layer is 1.2m, and the filler particles are prepared from the following components in parts by weight: 64 parts of biochar, 35 parts of vermiculite and 12 parts of diatomite; the operation of inoculating and domesticating the activated sludge comprises the following steps: uniformly spraying the activated sludge mixed liquor on the upper surface of the filler, collecting the activated sludge mixed liquor in a water tank at the bottom of the filler after flowing through the filler, starting a spraying circulating pump, adjusting operation parameters according to the designed spraying density, keeping the operation, gradually finishing biofilm formation of the mixed liquor in the circulating spraying process, and finally preparing the biological filler layer.
(3) Treating odor treated by the biological filler layer by using a plant liquid atomization spray tower, and then discharging, wherein the plant stock solution used by the plant liquid atomization spray tower is prepared from the following components in parts by weight: 25 parts of paniculate swallowwort root, 34 parts of palm skin, 35 parts of hairyvein agrimony, 60 parts of physalis alkekengi, 70 parts of common leafflower herb and 50 parts of swertia herb, mixing and crushing the paniculate swallowwort root, the palm skin, the hairyvein agrimony, the physalis alkekengi, the common leafflower herb and the swertia herb, extracting the mixture by absolute ethyl alcohol to obtain plant stock solution, diluting the plant stock solution by 3000 times by using water, and spraying odor by using a plant solution atomization spraying tower.
Comparative example 1
The filler is only filler particles, and the rest of the operation steps are exactly the same as in example 1.
Comparative example 2
The plant stock solution in the step (3) is a commercially available common plant stock solution, and the rest of the operation steps are completely the same as those in the example 2.
The odor removal treatment of the same sewage treatment plant was performed by the methods of each example and comparative example, and the test results are shown in table 1:
TABLE 1 Effect verification of a deodorization method for sewage treatment
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should understand that they can make various changes, modifications, additions and substitutions within the spirit and scope of the present invention.
Claims (6)
1. A sewage treatment deodorization method is characterized by comprising the following operation steps:
(1) covering and sealing the upper part of the sewage treatment tank, raising the temperature of the sewage to 38-46 ℃, and pumping out odor above the sewage by adopting a glass fiber reinforced plastic high-pressure fan;
(2) the extracted odor passes through a biological filler layer from top to bottom, wherein the biological filler layer is prepared by the following method: uniformly mixing diatomite and rare earth isooctanoate according to the mass ratio of 2-5, putting the mixture into an oven at 85-90 ℃, carrying out heat preservation treatment for 30-40min to obtain modified diatomite, uniformly mixing the modified diatomite and filler particles according to the mass ratio of 1: 8-10 to obtain a filler, and carrying out inoculation and domestication on the filler by adopting activated sludge to obtain a biological filler layer;
(3) treating odor treated by the biological filler layer by using a plant liquid atomization spray tower, and then discharging, wherein the plant stock solution used by the plant liquid atomization spray tower is prepared from the following components in parts by weight: 18-25 parts of paniculate swallowwort root, 28-34 parts of palm skin, 30-35 parts of hairyvein agrimony, 48-60 parts of physalis alkekengi, 68-70 parts of pearl grass and 40-50 parts of swertia mileensis.
2. The method according to claim 1, wherein in the step (2), the rare earth isooctanoate is a light yellow liquid, and the content of the effective substance is 8%.
3. The method of claim 1, wherein in the step (2), the height of the bio-packing layer is 1.0 to 1.2 m.
4. The method according to claim 1, wherein in the step (2), the filler particles are prepared from the following components in parts by weight: 58-64 parts of biochar, 30-35 parts of vermiculite and 8-12 parts of diatomite.
5. The method for sewage treatment deodorization according to claim 1, wherein in the step (2), the inoculation and acclimatization of the activated sludge are performed by: uniformly spraying the activated sludge mixed liquor on the upper surface of the filler, collecting the activated sludge mixed liquor in a water tank at the bottom of the filler after flowing through the filler, starting a spraying circulating pump, adjusting operation parameters according to the designed spraying density, keeping the operation, gradually finishing biofilm formation of the mixed liquor in the circulating spraying process, and finally preparing the biological filler layer.
6. The method as claimed in claim 1, wherein in the step (3), the Cynanchum paniculatum, Palmatum, Agrimonia pilosa, Physalis alkekengi, Phyllanthus niruri and Cymbopogon paniculatus are mixed and crushed, and then extracted with absolute ethanol to obtain a plant stock solution, and the plant stock solution is diluted with water by 3000 times, and then sprayed with the odor by a plant solution atomizing spray tower.
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| CN201910061983.2A CN109850974B (en) | 2019-01-16 | 2019-01-16 | Sewage treatment deodorization method |
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| CN201910061983.2A CN109850974B (en) | 2019-01-16 | 2019-01-16 | Sewage treatment deodorization method |
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| CN109850974B true CN109850974B (en) | 2022-02-25 |
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| CN110711481B (en) * | 2019-10-24 | 2022-11-01 | 湖南策君商贸有限公司 | Biological deodorization integrated station for sewage treatment |
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| CN207287091U (en) * | 2017-08-19 | 2018-05-01 | 皇宝（福建）环保工程投资有限公司 | A kind of deodoration system for sanitary sewage disposal |
| CN108079763A (en) * | 2017-12-25 | 2018-05-29 | 浙江省农业科学院 | Life in the countryside and aquaculture wastewater processing anaerobic pond sealing deodorizing lid and its processing method |
| CN108264203A (en) * | 2018-04-04 | 2018-07-10 | 浙江荣晟环保纸业股份有限公司 | A kind of processing system and method for paper waste foul smell |
| CN108854355A (en) * | 2018-08-28 | 2018-11-23 | 湖北君集水处理有限公司 | A kind of system and method for sewage treatment plant's foul smell Collecting and dealing |
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