CN106495413A - A kind of sewage-treatment plant and its application - Google Patents
A kind of sewage-treatment plant and its application Download PDFInfo
- Publication number
- CN106495413A CN106495413A CN201611149203.2A CN201611149203A CN106495413A CN 106495413 A CN106495413 A CN 106495413A CN 201611149203 A CN201611149203 A CN 201611149203A CN 106495413 A CN106495413 A CN 106495413A
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- Prior art keywords
- sewage
- sedimentation basin
- treatment plant
- autotrophic denitrification
- tank
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a kind of sewage-treatment plant and its application, belong to technical field of sewage.The invention provides a kind of sewage-treatment plant, is 5 including dischargeable capacity:40:80:40:16 biological adsorption pond, the first sedimentation basin, aeration tank, the second sedimentation basin and sulphur autotrophic denitrification filter tank, pass sequentially through pump and/or pipeline connection.Sulphur autotrophic denitrification as main body denitrification process, while a whole set of group technology hydraulic detention time is reduced, need not be added carbon source, reduce operating cost by the device.Apply the device to process sewage, water outlet total nitrogen concentration can be made less than 4mg/L, required far below the water outlet of one-level A standard 15mg/L.
Description
Technical field
The present invention relates to a kind of sewage-treatment plant and its application, belong to technical field of sewage.
Background technology
Nitrogen is the essential element for causing natural water eutrophication, and sewage treatment plant predominantly detects water quality index.
Sewage treatment plant of the country generally executes at present《Urban wastewater treatment firm pollutant emission standard》(GB18918-2002) in
One-level A standard, wherein total nitrogen concentration require to must not exceed 15mg/L.In recent years, many areas of China start execute stricter
Where effluent-disposal standard, such as《Beijing place water pollution discharge standard》(DB11/307-2013) the A standards in are total by water outlet
The limit value of nitrogen is reduced to 10mg/L.The main flow denitrogenation method of current urban wastewater treatment firm be based on activated sludge process " nitrification-
Denitrification " technique, wherein complete denitrogenation committed step is denitrification process, and what the process mainly played a role is activated sludge
In heterotrophic microorganism, by using the high-quality carbon source such as methyl alcohol, acetic acid, propionic acid as external electron-donor by nitrate-nitrogen reduction be
Nitrogen.But in the water inlet of actual sewage treatment plant, generally existing water-inlet carbon source is not enough, the problem that carbon-nitrogen ratio is unbalance, to tradition
Activated sludge process heterotrophism denitrogenation causes huge challenge.Therefore, high-quality carbon source is added to become and realizes that one-level A standard total nitrogen stably reaches
Target Main Means, but the operating cost of sewage treatment plant is this considerably increases, while sewage water denitrification is realized, consume big
Amount resource, is unfavorable for the realization of carbon emission reduction.
Content of the invention
For the more efficient removal for realizing total nitrogen in sewage disposal plant effluent, at the same reduce the operation of sewage treatment plant into
This, the invention provides a kind of sewage-treatment plant and apply the method that the device carries out sewage disposal.
First purpose of the present invention is to provide a kind of sewage-treatment plant, is 1 including dischargeable capacity:8:16:8:3.2
Biological adsorption pond, the first sedimentation basin, aeration tank, the second sedimentation basin and sulphur autotrophic denitrification filter tank, pass sequentially through pump and/or
Pipeline connects.
In one embodiment of the invention, biological adsorption pond, the first sedimentation basin, aeration in the sewage-treatment plant
Pond, the second sedimentation basin, the dischargeable capacity in sulphur autotrophic denitrification filter tank are respectively 1.5L, 12L, 24L, 12L and 4.8L；The biology
Adsorption tank front end arranges intake pump, and bottom is arranged breather line and is connected with blower fan；Set between biological adsorption pond and the first sedimentation basin
Put sludge reflux pump；In back taper, bottom is bi-directionally connected first sedimentation basin with biological adsorption pond, and top is connected with aeration tank
Connect；Breather line is set in aeration tank, and pipeline is connected with blower fan；Aeration tank and the second sedimentation basin two-phase connection, and at the two it
Between arrange sludge reflux pump；Connected by sulphur autotrophic denitrification intake pump between aeration tank and sulphur autotrophic denitrification filter tank.
In one embodiment of the invention, the sulphur autotrophic denitrification filter tank internal diameter 10cm, bottom are held for 10cm's
Support layer, is made up of for the stone grain of 5-10mm particle diameter, arranges the denitrogenation layer of 60cm above supporting layer, and filler is particle diameter 2-4mm, hole
The sulphur grain of rate 50%.
Second object of the present invention is to provide the method that application described device carries out sewage disposal, is control biological adsorption
The tank waterpower time of staying is 0.35-0.7h, sludge age SRT 1.5-3d, and dissolved oxygen DO scopes 0.5-1mg/L, mixed liquor suspend solid
Bulk concentration MLSS 4000-5000mg/L；The HRT 2h of the first sedimentation basin；Aeration tank HRT 6-8h, SRT 18-22d, DO scopes
2-4mg/L, MLSS maintain 3500-5000mg/L；The HRT 3h of the second sedimentation basin；Sulphur autotrophic denitrification filter tank HRT is 2-3h.
Third object of the present invention is to provide application of the sewage-treatment plant in environmental area.
Fourth object of the present invention is to provide methods described and carries out denitrogenation in chemical field to industrial wastewater, sanitary sewage
Application in terms of process, the application include tail water process, sewage purification.
Beneficial effect：Former water pollutant is gone using biological adsorption/aeration/sulphur autotrophic denitrification group technology
Remove, it is achieved that the advanced nitrogen of sewage disposal.Biological adsorption section adsorb into Organic substance in water, reduce subsequent processing units organic
While load and poisonous and harmful substance affect, a large amount of high organic content sludge are produced, can be used for anaerobic fermentation/digestion, real
Existing recycling purpose.In the group technology, the removal of nitrification and the rest COD completely of ammonia nitrogen is realized in aeration tank, and sulphur is certainly
Nitrate nitrogen is converted into nitrogen by foster denitrification filter pool, realizes the removal of total nitrogen in sewage.As a result show, autotrophic denitrification efficiency compared with
Height, water outlet total nitrogen concentration are less than 4mg/L, require far below the water outlet of one-level A standard 15mg/L.In addition, the group technology need not
Additional carbon, greatly reduces the operating cost of sewage treatment plant, and the HRT of whole technical process is shortened compared with prior art
30%.
Description of the drawings
Fig. 1 is the artwork that the biological adsorption-aeration-sulphur autotrophic denitrification of the present invention combines；1, intake pump；2, wind
Machine；3, biological adsorption pond；4, sludge reflux pump；5, the first sedimentation basin；6, blower fan；7, aeration tank；8, sludge reflux pump；9, second
Sedimentation basin；10, sulphur autotrophic denitrification intake pump；11, sulphur autotrophic denitrification filter tank；12, sulphur grain；13, Shi Li；
Fig. 2 is that biological adsorption section goes division result to total nitrogen；
Fig. 3 is that biological adsorption section goes division result to ammonia nitrogen；
Fig. 4 is that biological adsorption section goes division result to COD；
Fig. 5 is biological adsorption section MLSS and MLVSS/MLSS change；
Fig. 6 is the biological adsorption-aeration-sulphur autotrophic denitrification Process for Effluent total nitrogen, ammonia nitrogen and COD concentration of the present invention.
Specific embodiment
The design of 1 sewage-treatment plant of embodiment
The technological process of sewage-treatment plant as shown in figure 1, described device is made using acrylic board, including biological adsorption
Pond 3, the first sedimentation basin 5, aeration tank 7, the second sedimentation basin 9, sulphur autotrophic denitrification filter tank 11, dischargeable capacity is respectively：1.5L、
12L, 24L, 12L and 4.8L.3 front end of biological adsorption pond arranges intake pump 1, and bottom is arranged breather line and is connected with blower fan 2；
Sludge reflux pump 4 is set between biological adsorption pond 3 and the first sedimentation basin 5；First sedimentation basin 5 is in back taper, bottom and life
Thing adsorption tank 3 is bi-directionally connected, and top is connected with aeration tank 7；Breather line is set in aeration tank 7, and pipeline is connected with blower fan 6；Expose
Gas pond 7 and the connection of 9 two-phase of the second sedimentation basin, and sludge reflux pump is set between；Filter with sulphur autotrophic denitrification aeration tank 7
Connected by sulphur autotrophic denitrification intake pump 10 between pond 9；9 internal diameter 10cm of sulphur autotrophic denitrification filter tank, bottom are held for 10cm's
Support layer, is made up of for the stone grain 13 of 5-10mm particle diameter, arranges the denitrogenation layer of 60cm above supporting layer, and filler is particle diameter 2-4mm, hole
The sulphur grain 12 of gap rate 50%.
Sulphur autotrophic denitrification as main body denitrification process, is being reduced a whole set of group technology hydraulic detention time by the device
Meanwhile, carbon source need not be added, reduces operating cost.In addition, the carbon source in most of raw water is enriched in biological adsorption section sludge
In, the higher product of added value can be produced using anaerobic fermentation and acid production/methanogenic recycling treatment mode, the money of sludge is realized
Sourceization is utilized.The group technology has saving floor space, operating cost relatively low, while the excellent of resource addition product can be produced
Gesture, practical application meaning are larger.
The operation of 2 biological adsorption section of embodiment
The sewage-treatment plant of Application Example 1, controls biological adsorption tank waterpower time of staying HRT for 0.35-0.7h, dirty
Sludge age SRT is 1.5-3d, and dissolved oxygen DO scopes are 0.5-1mg/L, and mixed genetic-neural network MLSS is 4000-5000mg/
L.The HRT of sedimentation basin 1 is 2h.
As in Figure 2-4, the concentration range of water inlet total nitrogen is 25.4-41.3mg/L, and mean value is 33.5mg/L, and water inlet is total
In nitrogen, the overwhelming majority is ammonia nitrogen, and average accounting is 65.5%；Influent COD is 198-435mg/L, and mean value is 291mg/L.Biological
Mainly by controlling shorter HRT and SRT, culture adapts to raw water environment, can realize the micro- life of protokaryon of fast breeding adsorption tank
Thing, in order to adsorb the granulating material in water inlet.Therefore, biological adsorption in water inlet COD there is good removal ability, raw
3 water outlet COD scopes of thing adsorption tank are 82-209mg/L, and mean value is 132.8mg/L, and average removal rate is 51%.Due to shorter
HRT, ammonia nitrogen cannot realize effectively nitrification, and the clearance of total nitrogen is relatively low, and mean value is 25.7%.
In the way of traditional wastewater process mostly adopts " by energy energy dissipating ", i.e., made a return journey by consuming a large amount of electric energy with aeration mode
Decontamination water pollutant, but this actual carbon footprint that increased sewage disposal.In addition, the imperfection of municipal sewage pipe network makes
Containing a large amount of silt particles in water inlet, cause excess sludge recycling effect poor.To can be intake using biological adsorption technique
In partial organic substances be transferred in biological adsorption section sludge, as shown in figure 5, this section of sludge content of organic matter compares seed sludge
Significantly raised, the aggregate of particulate organic matter in mostly intaking, beneficial to anaerobic fermentation/digestion.Volatilization is produced using anaerobic fermentation
The recycling treatment mode such as acid or methane phase, can really promote the comprehensive utilization of resources of sewage disposal industry.
The operation of 3 sewage-treatment plant of embodiment
The sewage-treatment plant of Application Example 1, controls the biological adsorption tank waterpower time of staying for HRT 0.35-0.7h,
Sludge age SRT is 1.5-3d, and dissolved oxygen DO scopes are 0.5-1mg/L, and mixed genetic-neural network MLSS is 4000-
5000mg/L.The HRT of sedimentation basin 1 is 2h.Aeration tank HRT is 6-8h, and SRT is 18-22d, and DO scopes are 2-4mg/L, and MLSS is tieed up
Hold in 3500-5000mg/L.The HRT of sedimentation basin 2 is 3h.Sulphur autotrophic denitrification filter tank HRT is 2-3h.
Realize the degraded of nitrification and the residual organic substances completely of ammonia nitrogen in aeration tank；High-nitrate state nitrogen water outlet passes through the anti-nitre of sulphur autotrophy
Change filter tank and realize denitrification process.Sulphur autotrophic denitrification be on sulphur grain enrichment thiobacillus denitrificans, the autotrophic bacterium using elemental sulfur as
Electron donor, nitrate nitrogen realize the removal of nitrate nitrogen as acceptor.As shown in fig. 6, experimental rig water outlet ammonia nitrogen scope is 0.1-
3.5mg/L, mean value are 1.3mg/L, it is achieved that good ammonium oxidation；Water outlet total nitrogen mean value is 3.8mg/L, shows sulphur certainly
Foster denitrification filter pool nitrate-nitrogen reduction effect is significant, it is achieved that better than the water outlet of one-level A standard, shortening whole water treatment technology
Carbon source is saved while HRT.The scope of water outlet COD is 18-48mg/L, and mean value is 35.2mg/L, better than one-level A standard pair
Emission request in COD.
Although the present invention is disclosed as above with preferred embodiment, which is not limited to the present invention, any is familiar with this skill
The people of art, without departing from the spirit and scope of the present invention, can do various changes and modification, therefore protection model of the invention
Enclosing should be by being defined that claims are defined.
Claims (8)
1. a kind of sewage-treatment plant, it is characterised in that be 1 including dischargeable capacity:8:16:8:3.2 biological adsorption pond,
One sedimentation basin, aeration tank, the second sedimentation basin and sulphur autotrophic denitrification filter tank, pass sequentially through pump and/or pipeline connection.
2. sewage-treatment plant according to claim 1, it is characterised in that biological adsorption in the sewage-treatment plant
Pond, the first sedimentation basin, aeration tank, the second sedimentation basin, the dischargeable capacity in sulphur autotrophic denitrification filter tank are 1:8:16:8:3.2；Institute
State biological adsorption pond front end and intake pump is set, bottom is arranged breather line and is connected with blower fan；Biological adsorption pond and the first sedimentation basin
Between arrange sludge reflux pump；First sedimentation basin is in back taper, and bottom is bi-directionally connected with biological adsorption pond, top and aeration
Pond connects；Breather line is set in aeration tank, and pipeline is connected with blower fan；Aeration tank and the connection of the second sedimentation basin two-phase, and two
Sludge reflux pump is set between person；Connected by sulphur autotrophic denitrification intake pump between aeration tank and sulphur autotrophic denitrification filter tank.
3. sewage-treatment plant according to claim 1 and 2, it is characterised in that biological in the sewage-treatment plant inhale
Attached pond, the first sedimentation basin, aeration tank, the second sedimentation basin, sulphur autotrophic denitrification filter tank dischargeable capacity be respectively 1.5L, 12L,
24L, 12L and 4.8L.
4. sewage-treatment plant according to claim 1 and 2, it is characterised in that the sulphur autotrophic denitrification filter tank internal diameter
10～15cm, bottom are the supporting layer of 10～15cm, are made up of for the stone grain of 5-10mm particle diameter, arrange 60 above supporting layer～
The denitrogenation layer of 80cm, filler be particle diameter 2-4mm, the sulphur grain of porosity 50%.
5. a kind of method of sewage disposal, it is characterised in that the sewage-treatment plant described in application claim 1 or 2 carries out dirt
Water process.
6. method according to claim 5, it is characterised in that methods described is the control biological adsorption tank waterpower time of staying
For 0.35-0.7h, sludge age SRT 1.5-3d, dissolved oxygen DO scopes 0.5-1mg/L, mixed genetic-neural network MLSS
4000-5000mg/L；The HRT 2h of the first sedimentation basin；Aeration tank HRT 6-8h, SRT 18-22d, DO scopes 2-4mg/L, MLSS
Maintain 3500-5000mg/L；The HRT 3h of the second sedimentation basin；Sulphur autotrophic denitrification filter tank HRT is 2-3h.
7. method according to claim 5, it is characterised in that the sewage includes industrial wastewater, sanitary sewage.
8. the sewage-treatment plant described in claim 1 or 2 in terms of environmental area carries out tail water process, sewage purification should
With.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611149203.2A CN106495413A (en) | 2016-12-14 | 2016-12-14 | A kind of sewage-treatment plant and its application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611149203.2A CN106495413A (en) | 2016-12-14 | 2016-12-14 | A kind of sewage-treatment plant and its application |
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| CN106495413A true CN106495413A (en) | 2017-03-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108483805A (en) * | 2018-04-02 | 2018-09-04 | 华中科技大学 | A kind of integrated multi-functional artificial wetland treatment device |
| CN114057295A (en) * | 2021-11-19 | 2022-02-18 | 湖南航天凯天水务有限公司 | Enhanced denitrification sewage treatment process coupled with sludge recycling treatment |
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| CN102225825A (en) * | 2011-05-09 | 2011-10-26 | 余静 | Zero-energy-consumption enhanced AB (adsorption-biodegradation) treatment method for urban sewage |
| CN102642981A (en) * | 2012-04-17 | 2012-08-22 | 清华大学 | Denitrification dephosphorization device |
| CN103723893A (en) * | 2014-01-10 | 2014-04-16 | 中国科学院生态环境研究中心 | Method for removing nitrate nitrogen from water |
| CN105399202A (en) * | 2015-12-29 | 2016-03-16 | 北京工业大学 | Method for removing phosphorous based on high-efficiency promotion of spongy iron corrosion in process of nitrogen removal by denitrification |
-
2016
- 2016-12-14 CN CN201611149203.2A patent/CN106495413A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225825A (en) * | 2011-05-09 | 2011-10-26 | 余静 | Zero-energy-consumption enhanced AB (adsorption-biodegradation) treatment method for urban sewage |
| CN102642981A (en) * | 2012-04-17 | 2012-08-22 | 清华大学 | Denitrification dephosphorization device |
| CN103723893A (en) * | 2014-01-10 | 2014-04-16 | 中国科学院生态环境研究中心 | Method for removing nitrate nitrogen from water |
| CN105399202A (en) * | 2015-12-29 | 2016-03-16 | 北京工业大学 | Method for removing phosphorous based on high-efficiency promotion of spongy iron corrosion in process of nitrogen removal by denitrification |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108483805A (en) * | 2018-04-02 | 2018-09-04 | 华中科技大学 | A kind of integrated multi-functional artificial wetland treatment device |
| CN114057295A (en) * | 2021-11-19 | 2022-02-18 | 湖南航天凯天水务有限公司 | Enhanced denitrification sewage treatment process coupled with sludge recycling treatment |
| CN114057295B (en) * | 2021-11-19 | 2023-12-12 | 湖南航天凯天水务有限公司 | Enhanced denitrification sewage treatment process coupled with sludge recycling treatment |
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