CN104310587A - Denitrification and dephosphorization wastewater treatment system and process - Google Patents
Denitrification and dephosphorization wastewater treatment system and process Download PDFInfo
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- CN104310587A CN104310587A CN201410592376.6A CN201410592376A CN104310587A CN 104310587 A CN104310587 A CN 104310587A CN 201410592376 A CN201410592376 A CN 201410592376A CN 104310587 A CN104310587 A CN 104310587A
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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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
- C02F2101/00—Nature of the contaminant
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- C02F2101/16—Nitrogen compounds, e.g. ammonia
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Abstract
The invention relates to a denitrification and dephosphorization wastewater treatment system, belonging to the technical field of wastewater treatment. The denitrification and dephosphorization wastewater treatment system comprises a hydrolysis anaerobic unit, an anoxic unit and an aerobic unit, which are sequentially communicated according to a wastewater treatment process, and further comprises two multifunctional sequencing batch reaction units located at two sides of the hydrolysis anaerobic unit and the anoxic unit, wherein the two multifunctional sequencing batch reaction units are respectively arranged on two sides of a water inlet direction; the aerobic unit is simultaneously communicated with the two multifunctional sequencing batch reaction units; and each multifunctional sequencing batch reaction unit is internally provided with a sludge reflux unit. The invention also provides a denitrification and dephosphorization wastewater treatment process, which can realize continuous water feeding and continuous water discharging of the hydrolysis anaerobic unit, the anoxic unit and the aerobic unit, and the multifunctional sequencing batch reaction units are alternatively used for aeration and filtration water discharging. The denitrification and dephosphorization wastewater treatment system and process provided by the invention can be used for effectively improving the volumetric loading, reducing floor area, reasonably allocating carbon sources and improving denitrification and dephosphorization effects.
Description
Technical field
The present invention relates to technical field of sewage, particularly relate to a kind of denitrogenation dephosphorizing Sewage treatment systems and technique thereof.
Background technology
At present, the municipal wastewater biochemical processing process with denitrogenation dephosphorizing function of main flow has AAO technique, MSBR technique and BAF etc., above technique has been widely used in the municipal sewage plant of China, and tremendous contribution has been made in the waste water control for China.And starting a kind of novel process---the MBBR technique of application in the recent period at home, this technique is applied in the upgrading of sewage work more and more.
AAO technique is traditional activated sludge method processing technique, has convenient management, the advantage that treatment effect is stable, but it is low to there is volumetric loading, and settling tank floor space is large, is difficult to the shortcomings such as properly distributed carbon source causes Nitrogen/Phosphorus Removal bad.
MSBR process structure is compact, good denitrogenation and dephosphorization effect, need not arrange independent settling tank, continuous flow, the advantages such as floor space is little, but it is bad to there is sedimentation effect, the shortcoming that water outlet SS is high.
BAF is compared with conventional activated sludge process, there is the advantages such as organic loading is high, floor space is little, can not produce sludge bulking, oxygen transmission efficiency is high, effluent quality is good, but there is following shortcoming: 1, require tighter to water inlet SS, therefore need to carry out pre-treatment to water inlet, running cost increases; 2, biological phosphor-removing effect is poor, and need to add medicament and carry out chemical dephosphorization, running cost is high; 3, the back flushing water yield, head loss are all larger; 4, investment is higher.
MBBR technique has just started application at home, does not also build up the Sewage Plant adopting separately MBBR technique, is only applied in the upgrading of existing Sewage Plant, fundamentally can not solves the sewage handling problem of China.
Therefore, according to denitrogenation dephosphorizing principle, improve volumetric loading, reduce floor space, properly distributed carbon source, improve the primary goal that denitrogenation dephosphorizing efficiency is current Novel sewage treatment process, the advantage of the techniques such as comprehensive AAO technique, MSBR technique, biological aerated filter process and MBBR technique will become the R&D direction of sewage treatment process from now on.
Summary of the invention
The object of this invention is to provide one effectively to improve volumetric loading, reduce floor space, properly distributed carbon source, improve denitrogenation dephosphorizing Sewage treatment systems and the technique thereof of Nitrogen/Phosphorus Removal.
For achieving the above object, the technical solution adopted in the present invention is: a kind of denitrogenation dephosphorizing Sewage treatment systems, comprise: the hydrolysis anaerobic unit, anoxic unit and the aerobic unit that are communicated with successively according to sewage treatment process, also comprise and be positioned at hydrolysis anaerobic unit and two multi-functional sequence batch reaction unit of anoxic unit both sides, described two multi-functional sequence batch reaction unit are respectively in the both sides into water direction; Described aerobic unit is communicated with described two multi-functional sequence batch reaction unit simultaneously; Sludge refluxing apparatus is provided with in described each multi-functional sequence batch reaction unit.
Preferably, described sludge refluxing apparatus comprises and the mud in multi-functional sequence batch reaction unit can be extracted the first sludge reflux pump be back in described hydrolysis anaerobic unit, also comprises and the nitrification liquid that multi-functional sequence batch reaction unit aeration phase produces can be back to the second sludge reflux pump that anoxic unit carries out anti-nitration reaction.
Preferably, in described hydrolysis anaerobic unit, filler and sump pump is provided with.
Preferably, in described anoxic unit, agitator is provided with.
Preferably, bottom described aerobic unit, aerator is provided with.
Preferably, described multi-functional sequence batch reaction unit bottom is provided with aerator, and the face of described multi-functional sequence batch reaction unit is provided with inclined tube filler, filtrate grid and suspended filter material from top to bottom successively.
Preferably, described hydrolysis anaerobic unit and the width of anoxic unit adapt and close-packed arrays, one side of described aerobic unit connects with anoxic unit, two multi-functional sequence batch reaction unit simultaneously, the i.e. width sum of described anoxic unit and two multi-functional sequence batch reaction unit, with the side edge length of described aerobic unit with adapt.
The present invention also provides a kind of denitrogenation dephosphorizing sewage treatment process, and step is as follows:
(1) anaerobic phosphorus release reaction: pending sewage is after the pre-treatment such as thickness grid and sand setting, first hydrolysis anaerobic unit is flowed into, after filler effect, the larger molecular organics in water inlet is hydrolyzed into the small organic molecule being easy to antimicrobial absorbent, carries out the release of phosphorus simultaneously;
(2) anti-nitration reaction: after hydrolysis anaerobic unit water outlet enters anoxic unit, the nitrification liquid refluxed with multi-functional sequence batch reaction unit aeration phase mixes and carries out denitrification denitrogenation, and multi-functional sequence batch reaction unit mixed liquid recycle ratio is 50-200%.
(3) oxidation of coal, aerobic suction phosphorus and nitration reaction: after anoxic unit water outlet enters aerobic unit, by the form of aerator aeration, carry out organics removal, carry out the nitration reaction of ammonia nitrogen simultaneously;
(4) nitration reaction: after aerobic unit water outlet enters multi-functional sequence batch reaction unit, continue aeration and carry out nitration reaction, suspended filter material during aeration in multi-functional sequence batch reaction unit is fluidized state;
(5) last, the water outlet of multi-functional sequence batch reaction unit proceeds to filtration bleeding stage, and during draining, suspended filter material is deposited in cell cube top.
Preferably, in described step (1), be supplementary bacterial classification, at multi-functional sequence batch reaction unit bleeding stage, extracted by sludge reflux pump by mud and be back in hydrolysis anaerobic unit, its reflux ratio is no more than 10%.
Preferably, in described step (5), adding carbon source at multi-functional sequence batch reaction unit and carry out denitrification, for filtering suspended substance, being less than 10mg/L to use water suspension.
Beneficial effect
A kind of denitrogenation dephosphorizing Sewage treatment systems of the present invention, novel structure, rationally distributed, floor space is little, according to effluent stream to simultaneously in conjunction with sewage treatment process, integrate multiple sewage disposal links such as hydrolysis anaerobic unit, anoxic unit, aerobic unit and multi-functional sequence batch reaction unit, make sewage disposal realize the integration of multiple advantage operation, overcome the shortcoming of original technique.Each clean unit of denitrogenation dephosphorizing Sewage treatment systems of the present invention adopts modular design, and compact construction, effluent quality is good, and level of automation is high, reduced investment, convenient management.
Accompanying drawing explanation
Fig. 1 is topology view of the present invention.
Fig. 2 is A-A sectional view of the present invention.
In figure: 1, be hydrolyzed anaerobic unit, 2, anoxic unit, 3, aerobic unit, 4, multi-functional sequence batch reaction unit, 5, filler, 6, sump pump, 7, agitator, 8, filtrate grid, 9, suspended filter material, 10, inclined tube filler, the 11, first sludge reflux pump, 12, the second sludge reflux pump, 13, aerator.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Below in conjunction with concrete accompanying drawing, realization of the present invention is described in detail.
As shown in Figure 1 and Figure 2, for achieving the above object, the technical solution adopted in the present invention is: a kind of denitrogenation dephosphorizing Sewage treatment systems, comprise: the hydrolysis anaerobic unit 1 be communicated with successively according to sewage treatment process, anoxic unit 2 and aerobic unit 3, also comprise and be positioned at hydrolysis anaerobic unit 1 and two multi-functional sequence batch reaction unit, 4, two multi-functional sequence batch reaction unit 4 of anoxic unit 2 both sides and be respectively in both sides into water direction; Aerobic unit 3 is communicated with two multi-functional sequence batch reaction unit 4 simultaneously; Sludge refluxing apparatus is provided with in each multi-functional sequence batch reaction unit 4.
In the present embodiment, sludge refluxing apparatus comprises and the mud in multi-functional sequence batch reaction unit 4 can be extracted the first sludge reflux pump 11 be back in described hydrolysis anaerobic unit 1, also comprises and the nitrification liquid that multi-functional sequence batch reaction unit 4 aeration phase produces can be back to the second sludge reflux pump 12 that anoxic unit 2 carries out anti-nitration reaction.
Filler 5 and sump pump 6 is provided with in hydrolysis anaerobic unit 1, filler 5 grows a large amount of microorganism, for the larger molecular organics in water inlet is hydrolyzed into the small organic molecule being easy to antimicrobial absorbent, carry out the release of phosphorus, sump pump 6 also can pump into sewage directly to multi-functional sequence batch reaction and provide carbon source simultaneously.
In anoxic unit 2, be provided with agitator 22, the effect of agitator 22 is the anti-nitration reactions accelerating to carry out in anoxic unit 2.
Aerator 13 is provided with bottom aerobic unit 3.
Be provided with aerator 13 bottom multi-functional sequence batch reaction unit 4, the face of multi-functional sequence batch reaction unit 4 is provided with inclined tube filler 10, filtrate grid 8 and suspended filter material 9 from top to bottom successively, and suspended filter material 9 has microbe carrier and filters the function of suspended substance.
Define and be of a size of length along obtaining with water inlet side vector, obtain along perpendicular side vector and be of a size of width, described hydrolysis anaerobic unit 1 and the width of anoxic unit 2 adapt and close-packed arrays, one side of aerobic unit 3 connects with the multi-functional sequence batch reaction unit 4 of anoxic unit 2, two simultaneously, the i.e. width sum of anoxic unit 2 and two multi-functional sequence batch reaction unit 4, with the side edge length of aerobic unit 3 with adapt, thus make the integral layout of native system compacter.
Adopt the denitrogenation dephosphorizing sewage treatment process of above-mentioned denitrogenation dephosphorizing Sewage treatment systems, can realize in this denitrification dephosphorization technique working process be hydrolyzed anaerobic unit 1, anoxic unit 2, aerobic unit 3 continuum micromeehanics and continuous effluent, multi-functional sequence batch reaction unit 4 hocket aeration and filter draining.
Concrete steps are as follows:
(1) anaerobic phosphorus release reaction: pending sewage is after the pre-treatment such as thickness grid and sand setting, first first unit hydrolysis anaerobic unit 1 of denitrification dephosphorization technique is flowed into, in hydrolysis anaerobic unit 1, filler 5 is installed, after filler 5 acts on, larger molecular organics in water inlet is hydrolyzed into the small organic molecule being easy to antimicrobial absorbent, carries out the release of phosphorus simultaneously.In order to supplementary bacterial classification, at multi-functional sequence batch reaction unit 4 bleeding stage, extracted by sludge reflux pump 11,12 by mud and be back in hydrolysis anaerobic unit 1, its reflux ratio is no more than 10%.
(2) anti-nitration reaction: after hydrolysis anaerobic unit 1 water outlet enters anoxic unit 2, the nitrification liquid refluxed with multi-functional sequence batch reaction unit 4 aeration phase mixes and carries out denitrification denitrogenation, and multi-functional sequence batch reaction unit 4 mixed liquid recycle ratio is 50-200%.
(3) oxidation of coal, aerobic suction phosphorus and nitration reaction: after anoxic unit 2 water outlet enters aerobic unit 3, by aerator 13 aeration to oxygenation in water, organisms use oxygen carries out the nitration reaction of organics removal and ammonia nitrogen;
(4) nitration reaction: the water outlet through aerobic unit 3 aerobic reaction enters multi-functional sequence batch reaction unit 4, first continue aeration and carry out nitration reaction, suspended filter material 9 during aeration in multi-functional sequence batch reaction unit 4 is in fluidized state, and now multi-functional sequence batch reaction unit 4 has MBBR process function.
(5) last, the water outlet of multi-functional sequence batch reaction unit 4 proceeds to filtration bleeding stage, because suspended filter material 9 proportion is less than water, therefore, during draining, suspended filter material 9 is deposited in body top, pond, and now multi-functional sequence batch reaction unit 4 has DN biological filter function, can carry out denitrification by adding carbon source at multi-functional sequence batch reaction unit 4, also there is the function of filtering suspended substance, use water suspension and be less than 10mg/L.
The above embodiments are only the preferred embodiments of the present invention, can not limit interest field of the present invention with this, and therefore, the equivalent variations done according to the present patent application the scope of the claims, still belongs to the scope that the present invention is contained.
Claims (10)
1. a denitrogenation dephosphorizing Sewage treatment systems, it is characterized in that, comprise: the hydrolysis anaerobic unit (1) be communicated with successively according to sewage treatment process, anoxic unit (2) and aerobic unit (3), also comprise and be positioned at hydrolysis anaerobic unit (1) and two multi-functional sequence batch reaction unit (4) of anoxic unit (2) both sides, described two multi-functional sequence batch reaction unit (4) are respectively in the both sides into water direction; Described aerobic unit (3) is communicated with described two multi-functional sequence batch reaction unit (4) simultaneously; Sludge refluxing apparatus is provided with in described each multi-functional sequence batch reaction unit (4).
2. a kind of denitrogenation dephosphorizing Sewage treatment systems according to claim 1, it is characterized in that: described sludge refluxing apparatus comprises and the mud in multi-functional sequence batch reaction unit (4) can be extracted the first sludge reflux pump (11) be back in described hydrolysis anaerobic unit (1), also comprise and the nitrification liquid that multi-functional sequence batch reaction unit (4) aeration phase produces can be back to the second sludge reflux pump (12) that anoxic unit (2) carries out anti-nitration reaction.
3. a kind of denitrogenation dephosphorizing Sewage treatment systems according to claim 2, is characterized in that: in described hydrolysis anaerobic unit (1), be provided with filler (5) and sump pump (6).
4. a kind of denitrogenation dephosphorizing Sewage treatment systems according to claim 3, is characterized in that: in described anoxic unit (2), be provided with agitator (7).
5. a kind of denitrogenation dephosphorizing Sewage treatment systems according to claim 4, is characterized in that: be provided with aerator (13) in described aerobic unit (3) bottom.
6. a kind of denitrogenation dephosphorizing Sewage treatment systems as claimed in any of claims 1 to 5, it is characterized in that: described multi-functional sequence batch reaction unit (4) bottom is provided with aerator (13), and the face of described multi-functional sequence batch reaction unit (4) is provided with inclined tube filler (10), filtrate grid (8) and suspended filter material (9) from top to bottom successively.
7. a kind of denitrogenation dephosphorizing Sewage treatment systems according to claim 1, it is characterized in that: described hydrolysis anaerobic unit (1) and the width of anoxic unit (2) adapt and close-packed arrays, one side of described aerobic unit (3) connects with anoxic unit (2), two multi-functional sequence batch reaction unit (4) simultaneously, the i.e. width sum of described anoxic unit (2) and two multi-functional sequence batch reaction unit (4), with the side edge length of described aerobic unit (3) with adapt.
8. adopt a denitrogenation dephosphorizing sewage treatment process for denitrogenation dephosphorizing Sewage treatment systems according to claim 1, step is as follows:
(1) anaerobic phosphorus release reaction: pending sewage is after the pre-treatment such as thickness grid and sand setting, first hydrolysis anaerobic unit (1) is flowed into, after filler (5) effect, larger molecular organics in water inlet is hydrolyzed into the small organic molecule being easy to antimicrobial absorbent, carries out the release of phosphorus simultaneously;
(2) anti-nitration reaction: after hydrolysis anaerobic unit (1) water outlet enters anoxic unit (2), the nitrification liquid refluxed with multi-functional sequence batch reaction unit (4) aeration phase mixes and carries out denitrification denitrogenation, and multi-functional sequence batch reaction unit (4) mixed liquid recycle ratio is 50-200%.
(3) oxidation of coal, aerobic suction phosphorus and nitration reaction: after anoxic unit (2) water outlet enters aerobic unit (3), by the form of aerator (13) aeration, carry out organics removal, carry out the nitration reaction of ammonia nitrogen simultaneously;
(4) nitration reaction: after aerobic unit (3) water outlet enters multi-functional sequence batch reaction unit (4), continue aeration and carry out nitration reaction, the suspended filter material (9) during aeration in multi-functional sequence batch reaction unit (4) is in fluidized state;
(5) last, the water outlet of multi-functional sequence batch reaction unit (4) proceeds to filtration bleeding stage, and during draining, suspended filter material (9) is deposited in body top, pond.
9. denitrogenation dephosphorizing sewage treatment process according to claim 7, it is characterized in that, in described step (1), for supplementary bacterial classification, at multi-functional sequence batch reaction unit (4) bleeding stage, extracted by sludge reflux pump (11,12) by mud and be back in hydrolysis anaerobic unit (1), its reflux ratio is no more than 10%.
10. denitrogenation dephosphorizing sewage treatment process according to claim 8, it is characterized in that, in described step (5), add carbon source multi-functional sequence batch reaction unit (4) and carry out denitrification, for filtering suspended substance, be less than 10mg/L to use water suspension.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016154646A1 (en) * | 2015-04-02 | 2016-10-06 | Kurt Ingerle | Method for biological wastewater purification with phosphorous removal |
| CN109809565A (en) * | 2019-03-29 | 2019-05-28 | 华南理工大学 | The method of its processing sewage of sequencing mud-membrane complex biological filter and application |
| CN110713256A (en) * | 2019-10-14 | 2020-01-21 | 上海理工大学 | Biological pipe culvert reaction unit |
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| CN102786138A (en) * | 2012-07-24 | 2012-11-21 | 西安建筑科技大学 | Sectionalized sewage treatment tank using cyclic activated sludge system |
| CN103523924A (en) * | 2013-10-28 | 2014-01-22 | 清华大学深圳研究生院 | Sewage reinforced nitrogen and phosphorus removal method and system |
| CN204162510U (en) * | 2014-10-29 | 2015-02-18 | 广州华浩能源环保集团有限公司 | A kind of denitrogenation dephosphorizing Sewage treatment systems |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202369444U (en) * | 2011-11-04 | 2012-08-08 | 浦华环保有限公司 | Multi-mode constant water level sequencing batch type activated sludge sewage treatment system |
| CN102786138A (en) * | 2012-07-24 | 2012-11-21 | 西安建筑科技大学 | Sectionalized sewage treatment tank using cyclic activated sludge system |
| CN103523924A (en) * | 2013-10-28 | 2014-01-22 | 清华大学深圳研究生院 | Sewage reinforced nitrogen and phosphorus removal method and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016154646A1 (en) * | 2015-04-02 | 2016-10-06 | Kurt Ingerle | Method for biological wastewater purification with phosphorous removal |
| CN109809565A (en) * | 2019-03-29 | 2019-05-28 | 华南理工大学 | The method of its processing sewage of sequencing mud-membrane complex biological filter and application |
| CN110713256A (en) * | 2019-10-14 | 2020-01-21 | 上海理工大学 | Biological pipe culvert reaction unit |
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Application publication date: 20150128 |