CN203582658U - Multi-stage aeration reclaimed water treatment system for medium and small towns - Google Patents
Multi-stage aeration reclaimed water treatment system for medium and small towns Download PDFInfo
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- CN203582658U CN203582658U CN201320806177.1U CN201320806177U CN203582658U CN 203582658 U CN203582658 U CN 203582658U CN 201320806177 U CN201320806177 U CN 201320806177U CN 203582658 U CN203582658 U CN 203582658U
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- 238000005273 aeration Methods 0.000 title claims abstract description 17
- 230000020477 pH reduction Effects 0.000 claims abstract description 17
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 16
- 230000007062 hydrolysis Effects 0.000 claims abstract description 15
- 238000011010 flushing procedure Methods 0.000 claims description 12
- 238000011001 backwashing Methods 0.000 claims description 9
- 239000010802 sludge Substances 0.000 claims description 7
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- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 239000010865 sewage Substances 0.000 abstract description 37
- 238000000034 method Methods 0.000 abstract description 13
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- 230000000694 effects Effects 0.000 description 3
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- 239000002253 acid Substances 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
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- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model discloses a multi-stage aeration reclaimed water treatment system for medium and small towns. The reclaimed water treatment system comprises a grating well (1), a hydrolytic acidification tank (3), a primary biological aerated filter (4), a secondary biological aerated filter (5), a tertiary biological filter (6) and a clean water tank (7) which are communicated in sequence. According to the reclaimed water treatment system disclosed by the utility model, municipal sewage is treated by the grating well to remove floating solids and suspended solids in the sewage to be processed, hydrolytic acidification is implemented on organic matters of the sewage in the hydrolytic acidification tank 3 with presence of a great amount of hydrolysis and acid-forming bacteria so as to hydrolyze insoluble organic matters into dissolved matters, the sewage, after hydrolytic acidification, is sequentially delivered to the primary biological aerated filter 4, the secondary biological aerated filter 5 and the tertiary biological filter 6 and is treated by aerated oxidation, and standard sewage treated by the biological filter flows into the clean water tank 7, thus finishing a sewage treatment process.
Description
Technical field
The utility model relates to middle water reuse field, specifically refers to water treatment system in the multi-stage aeration of a kind of Small Urban.
Background technology
Urban sewage recycling is exactly by life of urban resident and used water reuse after treatment in producing.Have two kinds of reuses in various degree: one be by sewage disposal to drinkable degree, another kind of be to non-degree of drinking by sewage disposal.For front one, because of higher, the complex process of its investment, non-special water-deficient area generally seldom adopts.Majority state be by sewage disposal to non-degree of drinking, drawn thus middle water concept.Small Urban sewage is mainly sanitary sewage and the combined sewage take organic waste water as main trade effluent, and its water yield is less, is generally no more than 50,000 m3/d, but water quality and water yield fluctuation are larger.Due to fund and technology, the many-sided reason of management of water equality, having determined must be economical, efficient, energy-conservation and easy and simple to handle at urban wastewater treatment firm.Domestic a lot of Small Urbans still adopt drainage by open canal at present, cause the waste of water resources.Especially southern area, a large amount of rainwater flow into and Groundwater infiltration, and the reason such as Small Urban standard of living restriction has determined that in sewage, organic concentration is lower in addition.Therefore, must select suitable treatment process in conjunction with the water yield of local sewage, water quality and temperature, weather, meteorology, geography, economic dispatch practical situation.
Utility model content
The purpose of this utility model is to provide water treatment in a kind of Small Urban of applicable China's national situation, and less investment, take up an area little, water treatment system in energy consumption a kind of Small Urban multi-stage aeration low, rational in infrastructure, simple to operate.
The utility model is achieved through the following technical solutions: water treatment system in the multi-stage aeration of a kind of Small Urban, comprises successively the grille well that is communicated with, hydrolysis acidification pool, one-level BAF, secondary BAF, three grades of biological filters, clean water basin.Town sewage, first via grille well processing, is mainly tackled solid floating matter and suspended substance larger in sewage, to prevent that it from gathering precipitation and stopping up water pump and pipeline in equalizing tank, guarantees that subsequent treatment process normally moves, grid slag labor cleaning's every day outward transport.Sewage through grille well processing enters hydrolysis acidification pool from bottom gravity flow, and hydrolysis acidification pool is divided into acidication layer and sludge blanket, and mixes fast and equably with sludge blanket by the water distributor with reflector.Sludge blanket is thicker, is similar to filtering layer, thereby particulate matter and colloidalmaterial in water inlet are held back rapidly and adsorbed.Because sludge blanket contains the aerobic-anaerobic microbe of high density, in pond under anoxia condition, the organic substance being retained down is under a large amount of hydrolysis-acid-producing bacteria effects, by insoluble hydrolysis of organic matter, be dissolved matter, by macromole, be difficult to biodegradable Substance Transformation for being easy to biodegradable material; Simultaneously, excess sludge (residue microbial film) the thalline exo polysaccharides cement layer of discharging during biological filter back flushing is hydrolyzed, and cell walls is opened, mud liquefied, come back in Sewage treatment systems by aerobic bacteria metabolism, reach excess sludge and subtract the object of appearanceization.Sewage after acidication is sent into one-level BAF, secondary BAF and three grades of biological filters successively, wherein one-level BAF is removed carbonization organism in sewage, secondary BAF is mainly carried out nitrated to the ammonia nitrogen in sewage, in this section of filter tank, because organic concentration is lower, heterotrophic microorganism is less, dominant bacteria is autotrophic type nitrifier, ammonia nitrogen in sewage can be oxidized to nitrogen as nitrate or nitrite, finally by three grades of biological filters, sewage is carried out to anti-nitration reaction again, to meet the requirement of water outlet to TN.Can, according to when emission standard requires TP≤0.5mg/l, at the water-in in this grade of filter tank, add molysite and carry out chemical dephosphorization simultaneously.Adopt rear-mounted denitrification filter tank to need additional carbon, as methyl alcohol etc.After above-mentioned biological filter sewage after treatment is up to standard, flow into clean water basin.
Further, for improving the reaction efficiency of system, described one-level BAF, secondary BAF and three grades of biological filters are connected with respectively backwashing pump.
Above-mentioned backwashing pump is preferably single-stage double-suction centrifugal pump, and material is stainless steel, thereby has good corrosion resistance nature, thereby has effectively extended the duration of service of system device, but is not limited to this, also can select according to practical situation.
Further, described middle water treatment system is provided with equalizing tank between grille well and hydrolysis acidification pool, thereby realize the object of the buffering water yield, even water quality, and then avoid the impact of impact load on follow-up biochemical treatment, improved the safe reliability of system operation.
Further; for the instantaneous big yield of filter back washing is carried out to dash adjustment; the normal operation of protection hydrolytic tank; described middle water treatment system is provided with back flushing Buffer Pool, and described back flushing Buffer Pool is communicated with one-level BAF, secondary BAF and three grades of biological filters respectively.
Further, in order to improve the aeration efficiency of biological filter, the utility model has also been set up back flushing gas blower, and described gas blower is communicated with one-level BAF, secondary BAF and three grades of biological filters respectively.
Above-mentioned gas blower preferably adopts roots blower, therefore has good gas supply capacity, but gas blower of the present utility model is not limited to this, also can select separately according to practical situation.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) by adopting, air water is parallel to be flowed upward the utility model, makes gas, water carry out fabulous dividing equally, and has prevented bubble condensing in filtering layer, and coefficient of oxygen utilization is high, and energy consumption is low, has reduced running cost.
(2) the utlity model has less pond holds and floor space, adopt municipal sewage plant's technique structures floor space of biological aerated filter process to only have 1/3 left and right of common process, simultaneously climate, the water yield, water quality impact is little, level of automation is high, operational management is simple.
(3) the utility model is by adopting three sections of Up-flow Biological Aerated Filter Process for Treating Municipal, and its water outlet SS and BOD5 can remain on below 20mg/l, and clearance is high, thereby treatment effect is stable, processes effluent quality good.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment 1 and 2.
Fig. 2 is the structural representation of the utility model embodiment 3.
Fig. 3 is the structural representation of the utility model embodiment 4 and 5.
Wherein: 1-grille well, 2-equalizing tank, 3-hydrolysis acidification pool, 4-one-level BAF, 5-secondary BAF, 6-three grades of biological filters, 7-clean water basin, 8-back flushing Buffer Pool, 9-back flushing gas blower, 10-backwashing pump.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment 1:
The process of the middle water treatment of the present embodiment as shown in Figure 1, first town sewage is processed via grille well 1, remove solid floating matter and suspended substance in treatment sewage, prevent that it from gathering precipitation and stopping up water pump and pipeline in equalizing tank, the sewage of processing through grille well 1 enters hydrolysis acidification pool 3 from bottom gravity flow, the organic substance of sewage acidication under a large amount of hydrolysis-acid-producing bacteria effects in hydrolysis acidification pool 3, by insoluble hydrolysis of organic matter, be dissolved matter, by macromole, be difficult to biodegradable Substance Transformation for being easy to biodegradable material.Sewage after acidication is sent into successively one-level BAF 4, secondary BAF 5 and three grades of biological filters 6 sewage is carried out to aeration oxide treatment, wherein one-level BAF 4 is removed carbonization organism in sewage, secondary BAF 5 is mainly carried out nitrated to the ammonia nitrogen in sewage, finally by three grades of biological filters 6, sewage is carried out to anti-nitration reaction again, after above-mentioned biological filter sewage after treatment is up to standard, flow into clean water basin 7, complete sewage treatment process.As shown in Figure 1, in the disclosed middle water treatment system of the utility model, each parts all connect by pipeline, and on pipeline, be provided with the valve of controlling its keying, because pipeline and valve are the routine techniques in this area, and improvement of the present utility model does not lie in pipeline and valve yet, and those skilled in the art can draw setting and the working process of pipeline and valve by basic general knowledge, therefore do not indicate in detail in Fig. 1, also it is not illustrated in detail.
Embodiment 2:
The difference of the present embodiment and embodiment 1 is, as shown in Figure 1, is further the reaction efficiency of raising system, and described one-level BAF 4, secondary BAF 5 and three grades of biological filters 6 are connected with respectively backwashing pump 10.Other parts of the present embodiment are identical with embodiment 1, repeat no more.
Embodiment 3:
The difference of the present embodiment and above-described embodiment is, as shown in Figure 2, further between grille well and hydrolysis acidification pool, be provided with equalizing tank 2, thereby realize the object of the buffering water yield, even water quality, and then avoid the impact of impact load on follow-up biochemical treatment, improved the safe reliability of system operation.Other parts of the present embodiment are identical with embodiment 1, repeat no more.
Embodiment 4:
The difference of the present embodiment and above-described embodiment is, as shown in Figure 3, further in described middle water treatment system, be provided with back flushing Buffer Pool 8, and described back flushing Buffer Pool 8 is communicated with one-level BAF 4, secondary BAF 5, three grades of biological filters 6 and hydrolysis acidification pool 3 respectively, thereby solve the excessive problem of the instantaneous water yield of filter back washing, hydrolysis acidification pool 3 is carried out to dash adjustment, guarantee to make it normal operation.Other parts of the present embodiment are same as the previously described embodiments, repeat no more.
Embodiment 5:
The difference of the present embodiment and above-described embodiment is, as shown in Figure 3, further set up back flushing gas blower 9, and described gas blower 9 is communicated with one-level BAF 4, secondary BAF 5 and three grades of biological filters 6 respectively, and then improved the aeration efficiency of biological filter.
The above; it is only preferred embodiment of the present utility model; not the utility model is done to any pro forma restriction, any simple modification, equivalent variations that every foundation technical spirit of the present utility model is done above embodiment, within all falling into protection domain of the present utility model.
Claims (8)
1. water treatment system in a Small Urban multi-stage aeration, it is characterized in that: comprise the grille well (1), hydrolysis acidification pool (3), one-level BAF (4), secondary BAF (5), three grades of biological filters (6), the clean water basin (7) that are communicated with successively, and described clean water basin (7) are connected with backwashing pump (10).
2. water treatment system in the multi-stage aeration of a kind of Small Urban according to claim 1, is characterized in that: described hydrolysis acidification pool (3) is up flow anaerobic sludge blanket reactor.
3. water treatment system in the multi-stage aeration of a kind of Small Urban according to claim 1, is characterized in that: described one-level BAF (4), secondary BAF (5) and three grades of biological filters (6) are connected with respectively backwashing pump (10).
4. water treatment system in the multi-stage aeration of a kind of Small Urban according to claim 3, is characterized in that: described backwashing pump (10) is single-stage double-suction centrifugal pump, and material is stainless steel.
5. water treatment system in the multi-stage aeration of a kind of Small Urban according to claim 1, is characterized in that: between described grille well (1) and hydrolysis acidification pool (3), be provided with equalizing tank (2).
6. water treatment system in the multi-stage aeration of a kind of Small Urban according to claim 1, it is characterized in that: be also provided with back flushing Buffer Pool (8), and described dcq buffer pond (8) is communicated with one-level BAF (4), secondary BAF (5) and three grades of biological filters (6) respectively.
7. water treatment system in the multi-stage aeration of a kind of Small Urban according to claim 1, is characterized in that: described one-level BAF (4), secondary BAF (5) and three grades of biological filters (6) are respectively arranged with back flushing gas blower (9).
8. water treatment system in the multi-stage aeration of a kind of Small Urban according to claim 7, is characterized in that: described back flushing gas blower (9) is roots blower.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320806177.1U CN203582658U (en) | 2013-12-10 | 2013-12-10 | Multi-stage aeration reclaimed water treatment system for medium and small towns |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320806177.1U CN203582658U (en) | 2013-12-10 | 2013-12-10 | Multi-stage aeration reclaimed water treatment system for medium and small towns |
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| CN203582658U true CN203582658U (en) | 2014-05-07 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104370423A (en) * | 2014-11-26 | 2015-02-25 | 扬州大学 | Laboratory effluent treatment device |
| CN107055933A (en) * | 2016-12-21 | 2017-08-18 | 北京交通大学 | A kind of high ammonia nitrogen low carbon/nitrogen ratio domestic sewage processing system and method |
| CN108569762A (en) * | 2018-05-09 | 2018-09-25 | 江苏大楚环保设备有限公司 | A kind of multifunctional all domestic sewage treatment device |
| CN108675564A (en) * | 2018-06-20 | 2018-10-19 | 徐州世润德环保科技有限公司 | Except carbon nitrifies water treatment system |
| CN119263491A (en) * | 2024-11-11 | 2025-01-07 | 哈尔滨工业大学 | Method for realizing efficient denitrification of urban sewage by using combined biofilter for carbonization/nitrification treatment of municipal sewage diversion |
-
2013
- 2013-12-10 CN CN201320806177.1U patent/CN203582658U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104370423A (en) * | 2014-11-26 | 2015-02-25 | 扬州大学 | Laboratory effluent treatment device |
| CN107055933A (en) * | 2016-12-21 | 2017-08-18 | 北京交通大学 | A kind of high ammonia nitrogen low carbon/nitrogen ratio domestic sewage processing system and method |
| CN107055933B (en) * | 2016-12-21 | 2020-10-23 | 北京交通大学 | High-ammonia-nitrogen low-carbon/nitrogen-ratio domestic sewage treatment system and method |
| CN108569762A (en) * | 2018-05-09 | 2018-09-25 | 江苏大楚环保设备有限公司 | A kind of multifunctional all domestic sewage treatment device |
| CN108675564A (en) * | 2018-06-20 | 2018-10-19 | 徐州世润德环保科技有限公司 | Except carbon nitrifies water treatment system |
| CN119263491A (en) * | 2024-11-11 | 2025-01-07 | 哈尔滨工业大学 | Method for realizing efficient denitrification of urban sewage by using combined biofilter for carbonization/nitrification treatment of municipal sewage diversion |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20140507 |