CN104671595A - Combined sewage treatment device of multistage AO-powdered activated carbon biological treatment system - Google Patents
Combined sewage treatment device of multistage AO-powdered activated carbon biological treatment system Download PDFInfo
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- CN104671595A CN104671595A CN201510044854.4A CN201510044854A CN104671595A CN 104671595 A CN104671595 A CN 104671595A CN 201510044854 A CN201510044854 A CN 201510044854A CN 104671595 A CN104671595 A CN 104671595A
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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
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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
- 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
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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
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- Biological Treatment Of Waste Water (AREA)
- Water Treatment By Sorption (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
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Abstract
The invention relates to a combined sewage treatment device of a multistage AO-powdered activated carbon biological treatment system. The combined sewage treatment device comprises a first anoxic tank, a first aerobic tank, a second anoxic tank, a second aerobic tank, a third anoxic tank, a third aerobic tank, a flocculating tank and a settling tank, wherein an activated carbon filler is added into at least the first anoxic tank; and the total addition amount of the activated carbon filler in the device is 0.5-3g/L. According to the structure designed by the invention, high-efficiency purification of sewage can be realized even if the addition amount of activated carbon is only 10% (at most 50%) of the original addition amount, so that activated carbon is effectively saved. Besides, the combined sewage treatment device effectively improves the removal effect of organic matters which are hard to degrade as well as the toxicant impact resistance of the system, increases the decoloration effect and the nitration reaction efficiency of the system, fully utilizes carbon sources in sewage and easily realizes high-efficiency removal of nitrogen in sewage.
Description
Technical field
The present invention relates to sewage treatment area, particularly relate to a kind of waste disposal plant and sewage water treatment method thereof of Powdered Activated Carbon biological treatment system of improvement.
Background technology
In recent years, along with the raising of urban development and industrialization degree, Urban Water Environment pollute and Eutrophication Status more and more seriously, the function of many water bodys is had a strong impact on, affects expanding economy.Wherein, nitrogen is the principal pollutant causing body eutrophication, particularly important to the control of total nitrogen content in the sewage of discharge.
In biological denitrification process, the multistage A/O biological denitrification process of multipoint water feeding is the New Biodenitrification Process of fast Development in recent years, the advantage of this technique is that required pond appearance is less, nitric efficiency is high, operational management is convenient, topmost is exactly that organic substrates is uniformly distributed along pond length, process low carbon-nitrogen ratio sewage can make full use of sewage carbon source, be beneficial to denitrifying carrying out, and load balancing, namely the gap between oxygen supply speed and oxygen consumption rate is reduced to a certain extent, be conducive to reducing energy consumption, the degradation function of microorganism in mud can be given full play to again.
Powdered activated carbon treatment process method not only maintains the advantage of traditional activated sludge process, also significantly improves the clearance of organic and inorganic pollutent due to adding of acticarbon simultaneously.This method once produce just because of its advantage in economy and processing efficiency be widely used in trade effluent as: the process of oil refining, petrochemical complex, dyeing waste water, coking chemical waste water, organic chemical waste water, this method obviously can improve nitrification effect for municipal sewage treatment.
The effective treatment process of a kind of dyeing and printing sewage is disclosed in China publication CN102659280A, it is process acidication, Powdered Activated Carbon process and flocculation process combination being realized described sewage, solves the problems such as traditional technology poor processing effect, effluent quality is unstable, floor space is large, sludge output is large, processing cost is high.Disclose a kind of powdered activated carbon treatment process of improvement in China publication CN103086503A, it has cultivated a kind of gac-microbial bacteria micelle, thus add particle diameter and the proportion of gac, enhances treatment effect.But above-mentioned technique after all or some is loaded down with trivial details, need the technology and equipment of simple and efficient of development of new.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, provide a kind of associating waste disposal plant of multistage AO-Powdered Activated Carbon biological treatment system, suitability is strong, simple and easy and efficient, is suitable for industrialization.
The present invention is achieved through the following technical solutions:
A kind of associating waste disposal plant of multistage AO-Powdered Activated Carbon biological treatment system (is referred to as " CBR
s-R "); it comprises the first anoxic pond, the first Aerobic Pond, the second anoxic pond, the second Aerobic Pond, the 3rd anoxic pond, the 3rd Aerobic Pond, flocculation tank and settling pond; wherein; at least in the first anoxic pond, add active carbon filler, and in described device, total dosage of active carbon filler is 0.5-3g/L.
Preferably, all in the first anoxic pond, active carbon filler is added.
According to the present invention, in described second anoxic pond, also add active carbon filler.
According to the present invention, in described 3rd anoxic pond, also add active carbon filler.
According to the present invention, described active carbon filler all adds anoxic pond.
According to the present invention, described active carbon filler can one-level add, and also can point two-stage or three grades add, described point of two-stage adds, preferably, the dosage in the first anoxic pond accounts for the 50-90% of total dosage, and the dosage in the second anoxic pond accounts for the 10-50% of total dosage.If divide three grades to add, preferably, the dosage in the first anoxic pond accounts for the 50-80% of total dosage, and the dosage in the second anoxic pond accounts for the 10-25% of total dosage, and the dosage in the 3rd anoxic pond accounts for the 10-25% of total dosage.
According to the present invention, the volume ratio of described first Aerobic Pond and the first anoxic pond is about 2:1.
According to the present invention, the volume ratio of described second Aerobic Pond and the second anoxic pond is (2 ~ 1): 1.
According to the present invention, the volume ratio of described 3rd Aerobic Pond and the 3rd anoxic pond is (2 ~ 1): 1.
According to the present invention, described sewage can divide three stocks not enter the first anoxic pond, the second anoxic pond and the 3rd anoxic pond, and two stocks also can be divided not enter the first anoxic pond and the second anoxic pond.If have strict demand to sewage total nitrogen, then preferably sewage divides two stocks not enter the first anoxic pond and the second anoxic pond, and the 3rd anoxic pond does not add sewage.
According to the present invention, in the partition ratio of described two strands of sewage, the partition ratio of the first anoxic pond represents with n1, and the partition ratio of the second anoxic pond represents with n2, if only add gac in the first anoxic pond, then n1:n2=(6 ~ 9): (1 ~ 4).Partition ratio can also be (7 ~ 8) than n1:n2: (2 ~ 3).
According to the present invention, if all thrown in gac in the first and second anoxic pond, then n1:n2=(5 ~ 9): (1 ~ 5), preferably (6 ~ 8): (2 ~ 4); Can also be (5 ~ 6): (4 ~ 5).
According to the present invention, in the partition ratio of described three strands of sewage, the partition ratio of the first anoxic pond represents with n1, the partition ratio of the second anoxic pond represents with n2, the partition ratio of the 3rd anoxic pond represents with n3, if only add gac in the first anoxic pond, then n1:n2:n3=(6 ~ 9): (0.5 ~ 2): (0.5 ~ 2), partition ratio can also be (7 ~ 8) than n1:n2:n3: (1 ~ 1.5): (1 ~ 1.5).
According to the present invention, if thrown in gac in the first and second anoxic pond, then n1:n2:n3=(5 ~ 8): (1 ~ 4): (1 ~ 2), can also be (5 ~ 6): (2 ~ 4): (2 ~ 1).If all thrown in gac in first, second, third anoxic pond, then n1:n2:n3=(5 ~ 9): (0.5 ~ 2.5): (0.5 ~ 2.5), preferably (6 ~ 8): (1 ~ 2): (1 ~ 2); Can also be (5 ~ 6): (2 ~ 2.5): (2 ~ 2.5).
According to the present invention, in described first anoxic pond, the second anoxic pond and the 3rd anoxic pond, be provided with whipping appts.
According to the present invention, in described first Aerobic Pond, the second Aerobic Pond and the 3rd Aerobic Pond, be provided with aerating apparatus.
According to the present invention, described 3rd Aerobic Pond also comprises mud return line, and described mud return line is connected with described one-level anoxic pond, for returned sluge is injected one-level anoxic pond.
According to the present invention, residue biological carbon mud reuse after concentrated of described settling pond.
According to the present invention, the carbon mud of described reuse enters the first anoxic pond, the second anoxic pond, the 3rd anoxic pond respectively.
According to the present invention, without the need to internal recycle between each Aerobic Pond of described device and anoxic pond.
According to the present invention, if desired advanced treatment is carried out to sewage, preferably, after settling pond, connect photo catalysis reactor, wherein containing nano-crystal titanium dioxide or polycrystalline zinc oxide of receiving, and be accompanied by uviolizing.The water flowed out from settling pond enters photo catalysis reactor, issues third contact of a total solar or lunar eclipse catalytic oxidation, remove trace impurity further at catalyzer nano-crystal titanium dioxide or the effect of polycrystalline zinc oxide received.
Device of the present invention goes for the process of multiple sewage, comprises trade effluent as the process of oil refining, petrochemical complex, dyeing waste water, coking chemical waste water, organic chemical waste water; And municipal sewage treatment.
The invention has the beneficial effects as follows:
1, the structure utilizing the present invention to design, gac adopts single or classification to throw in, and maximum 50% (even can be only 10%) that injected volume is only former injected volume can realize the high-efficient purification of sewage, have effectively saved the usage quantity of gac.
2, simple means are adopted, multistage AO biological denitrification process and Powdered Activated Carbon bioremediation method are organically combined, effective raising is difficult to degradation of organic substances removal effect and system attack toxic impact, raising system decolorizing effect and nitration reaction efficiency, and make full use of sewage carbon source, without the need to additionally adding organic carbon source, the efficient removal of nitrogen in simple realization sewage.
3, when not needing traditional WAO technique, the minimizing (be only traditional technology 90% even less) of effective reuse of biological carbon mud and sludge quantity can also be realized.
4, in conjunction with photo catalysis reactor, the material of micro-bio-refractory in sewage or waste water can be removed, reach better wastewater treatment efficiency.
Accompanying drawing explanation
The structural representation of Fig. 1 waste disposal plant of the present invention
Embodiment
As mentioned above, the waste disposal plant that the invention discloses a kind of Powdered Activated Carbon biological treatment of improvement (is referred to as " CBR
s-R "); it comprises the first anoxic pond, the first Aerobic Pond, the second anoxic pond, the second Aerobic Pond, the 3rd anoxic pond, the 3rd Aerobic Pond, flocculation tank and settling pond; wherein; add active carbon filler at least the first anoxic pond, and in described device, total dosage of active carbon filler is 0.5-3g/L.Compared with existing powdered activated carbon treatment process, the dosage of the active carbon filler in apparatus of the present invention is up to about 50% of the dosage of existing device, its sludge quantity then only has 90% of existing powdered activated carbon treatment process or lower, but the normal postrun total nitrogen of its device and ammonia nitrogen amount are then respectively lower than 12mg/L and 4.5mg/L, equal even to be better than existing powdered activated carbon treatment process.
Specifically, ingenious in the present invention multistage AO-activated sludge process and Powdered Activated Carbon facture to be combined, namely achieve effective minimizing of described active carbon filler, effectively control sludge quantity again, and denitrogenate efficiency and do not reduce and be even also improved.Visible, the present invention, by a simple structure design, solves problem efficiently, wide adaptability, is easy to industrialization.
Below in conjunction with specific embodiment, the present invention is further elaborated, but the present invention is not limited to following examples.Described method is ordinary method if no special instructions.Described starting material all can obtain from open commercial sources if no special instructions.
Embodiment 1
As shown in Figure 1, the inventive system comprises the first anoxic pond, the first Aerobic Pond, the second anoxic pond, the second Aerobic Pond, the 3rd anoxic pond, the 3rd Aerobic Pond, flocculation tank and settling pond.Added active carbon filler in described first anoxic pond, the second anoxic pond and the 3rd anoxic pond, dosage is respectively 0.6g/L, 0.3g/L and 0.1g/L.Whipping appts is provided with in first anoxic pond, the second anoxic pond and the 3rd anoxic pond.Aerating apparatus is provided with in first Aerobic Pond, the second Aerobic Pond and the 3rd Aerobic Pond.Between each Aerobic Pond and anoxic pond, internal recycle is not set.Described 3rd Aerobic Pond comprises mud return line, and it is connected with the first anoxic pond.Sewage divides three stocks not enter the first anoxic pond, the second anoxic pond and the 3rd anoxic pond, partition ratio n1:n2:n3=5:3:2.The volume ratio of the first Aerobic Pond and the first anoxic pond is 2:1, and the volume ratio of the second Aerobic Pond and the second anoxic pond is 2:1, and the volume ratio of the 3rd Aerobic Pond and the 3rd anoxic pond is 1.5:1.
Embodiment 2
The inventive system comprises the first anoxic pond, the first Aerobic Pond, the second anoxic pond, the second Aerobic Pond, the 3rd anoxic pond, the 3rd Aerobic Pond, flocculation tank and settling pond.Added active carbon filler in described first anoxic pond and the second anoxic pond, dosage is respectively 0.8g/L and 0.4g/L.Whipping appts is provided with in first anoxic pond, the second anoxic pond and the 3rd anoxic pond.Aerating apparatus is provided with in first Aerobic Pond, the second Aerobic Pond and the 3rd Aerobic Pond.Between each Aerobic Pond and anoxic pond, internal recycle is not set.Described 3rd Aerobic Pond also comprises mud return line, and it is connected with the first anoxic pond.Sewage divides three stocks not enter the first anoxic pond, the second anoxic pond and the 3rd anoxic pond, partition ratio n1:n2=6:3:1.The volume ratio of the first Aerobic Pond and the first anoxic pond is 2:1, and the volume ratio of the second Aerobic Pond and the second anoxic pond is 2:1, and the volume ratio of the 3rd Aerobic Pond and the 3rd anoxic pond is 2:1 (similar to the apparatus of Fig. 1, only the interpolation of gac is slightly different).
Embodiment 3
The inventive system comprises the first anoxic pond, the first Aerobic Pond, the second anoxic pond, the second Aerobic Pond, the 3rd anoxic pond, the 3rd Aerobic Pond, flocculation tank and settling pond.Added active carbon filler in described first anoxic pond, dosage is 1.1g/L.Whipping appts is provided with in first anoxic pond, the second anoxic pond and the 3rd anoxic pond.Aerating apparatus is provided with in first Aerobic Pond, the second Aerobic Pond and the 3rd Aerobic Pond.Between each Aerobic Pond and anoxic pond, internal recycle is not set.Described 3rd Aerobic Pond also comprises mud return line, and it is connected with the first anoxic pond.Sewage divides three stocks not enter the first anoxic pond, the second anoxic pond and the 3rd anoxic pond, partition ratio n1:n2:n3=7:2:1.The volume ratio of the first Aerobic Pond and the first anoxic pond is 2:1, and the volume ratio of the second Aerobic Pond and the second anoxic pond is 2:1, and the volume ratio of the 3rd Aerobic Pond and the 3rd anoxic pond is 1:1 (similar to the apparatus of Fig. 1, only the interpolation of gac is slightly different).
Comparative example 1
Traditional Powdered Activated Carbon treatment unit, comprises anoxic pond, Aerobic Pond, flocculation tank and settling pond, and the addition of active carbon filler is 9g/L.
Comparative example 2
Traditional Powdered Activated Carbon process-WAO device, comprises anoxic pond, Aerobic Pond, flocculation tank and settling pond, and WAO system, and the addition of active carbon filler is 8g/L.
Use the device of comparative example 1-2 and embodiment 1-3 to carry out the process of a kind of municipal effluent (its water quality is listed in table 1) respectively, the results are shown in Table 2 for it.
The water quality of table 1 municipal effluent
| COD Always(mg/L) | 200-400 | Ammonia nitrogen (mg/L) | 23-35 |
| Total nitrogen (mg/L) | 29-45 | SS(mg/L) | 40-400 |
| Total phosphorus (mg/L) | 1.8-4.0 | pH | 6.5-7.5 |
Table 2
Use the device of comparative example 1-2 and embodiment 1-3 to carry out the process of a kind of coal chemical industrial waste water (its water quality is listed in table 3) respectively, the results are shown in Table 4 for it.
The water quality of table 3 coal chemical industrial waste water
| COD Always(mg/L) | 3000-5000 | Ammonia nitrogen (mg/L) | 125-450 |
| Total nitrogen (mg/L) | 330-500 | SS(mg/L) | 200-750 |
| Total phosphorus (mg/L) | 1.9-4.5 | pH | 6.5-7.5 |
Table 4
It should be noted that, above-described embodiment is only used to technical characteristic of the present invention is described, is not used to limit the claimed scope of the present invention.With the technical scheme same principle of the present application content part, still belong to the category that the present invention is claimed.
Claims (10)
1. the associating waste disposal plant of a multistage AO-Powdered Activated Carbon biological treatment, it comprises: the first anoxic pond, the first Aerobic Pond, the second anoxic pond, the second Aerobic Pond, the 3rd anoxic pond, the 3rd Aerobic Pond, flocculation tank and settling pond, wherein, at least in the first anoxic pond, add active carbon filler, in described device, total dosage of active carbon filler is 0.5-3g/L.
Preferably, all in the first anoxic pond, active carbon filler is added.
More preferably, described active carbon filler all adds anoxic pond.
2. waste disposal plant as claimed in claim 1, it is characterized in that: in described second anoxic pond, also add active carbon filler, preferably, the dosage in the first anoxic pond accounts for the 50-90% of total dosage, and the dosage in the second anoxic pond accounts for the 10-50% of total dosage.
3. waste disposal plant as claimed in claim 1 or 2, it is characterized in that: in described second anoxic pond He in described 3rd anoxic pond, also add active carbon filler, preferably, dosage in first anoxic pond accounts for the 50-80% of total dosage, dosage in second anoxic pond accounts for the 10-25% of total dosage, and the dosage in the 3rd anoxic pond accounts for the 10-25% of total dosage.
4. the waste disposal plant as described in any one of claim 1-3, is characterized in that: the volume ratio of described first Aerobic Pond and the first anoxic pond is about 2:1.
5. the waste disposal plant as described in any one of claim 1-4, is characterized in that: the volume ratio of described second Aerobic Pond and the second anoxic pond is (2 ~ 1): 1.
6. the waste disposal plant as described in any one of claim 1-5, is characterized in that: the volume ratio of described 3rd Aerobic Pond and the 3rd anoxic pond is (2 ~ 1): 1.
7. the waste disposal plant as described in any one of claim 1-6, is characterized in that: described sewage can divide three stocks not enter the first anoxic pond, the second anoxic pond and the 3rd anoxic pond, and two stocks also can be divided not enter the first anoxic pond and the second anoxic pond.
Preferably, in the partition ratio of described two strands of sewage, the partition ratio of the first anoxic pond represents with n1, and the partition ratio of the second anoxic pond represents with n2, if only add gac in the first anoxic pond, then n1:n2=(6 ~ 9): (1 ~ 4); Can also be (7 ~ 8): (2 ~ 3);
Preferably, if all thrown in gac in the first and second anoxic pond, then n1:n2=(5 ~ 9): (1 ~ 5), preferably (6 ~ 8): (2 ~ 4); Can also be (5 ~ 6): (4 ~ 5);
Preferably, in the partition ratio of described three strands of sewage, the partition ratio of the first anoxic pond represents with n1, the partition ratio of the second anoxic pond represents with n2, the partition ratio of the 3rd anoxic pond represents with n3, if only add gac in the first anoxic pond, then n1:n2:n3=(6 ~ 9): (0.5 ~ 2): (0.5 ~ 2), partition ratio can also be (7 ~ 8) than n1:n2:n3: (1 ~ 1.5): (1 ~ 1.5);
Preferably, if thrown in gac in the first and second anoxic pond, then n1:n2:n3=(5 ~ 8): (1 ~ 4): (1 ~ 2), can also be (5 ~ 6): (2 ~ 4): (2 ~ 1).If all thrown in gac in first, second, third anoxic pond, then n1:n2:n3=(5 ~ 9): (0.5 ~ 2.5): (0.5 ~ 2.5), preferably (6 ~ 8): (1 ~ 2): (1 ~ 2); Can also be (5 ~ 6): (2 ~ 2.5): (2 ~ 2.5).
8. the waste disposal plant as described in any one of claim 1-7, is characterized in that: be provided with aerating apparatus in described first Aerobic Pond, the second Aerobic Pond and the 3rd Aerobic Pond,
Preferably, described 3rd Aerobic Pond also comprises mud return line, and described mud return line is connected with described one-level anoxic pond, for returned sluge is injected one-level anoxic pond.
9. the waste disposal plant as described in any one of claim 1-8, is characterized in that: after settling pond, be provided with photo catalysis reactor, wherein containing nano-crystal titanium dioxide or polycrystalline zinc oxide of receiving, and is accompanied by uviolizing.
10. the purposes of the waste disposal plant described in any one of claim 1-9, it is for the process of sewage, comprises trade effluent as the process of oil refining, petrochemical complex, dyeing waste water, coking chemical waste water, organic chemical waste water; And municipal sewage treatment.
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