CN104591504A - Multistage non-reflux powdered activated carbon bioactive sewage treatment device - Google Patents
Multistage non-reflux powdered activated carbon bioactive sewage treatment device Download PDFInfo
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- CN104591504A CN104591504A CN201510045011.6A CN201510045011A CN104591504A CN 104591504 A CN104591504 A CN 104591504A CN 201510045011 A CN201510045011 A CN 201510045011A CN 104591504 A CN104591504 A CN 104591504A
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
- C02F2103/365—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds from petrochemical industry (e.g. refineries)
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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
- 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
Abstract
The invention relates to a multistage non-reflux powdered activated carbon bioactive sewage treatment device. The device comprises multistage anoxic and aerobic tanks which are repeatedly connected in series, a flocculating tank and a clarification tank, wherein activated carbon fillers are at least added to the first anoxic tank; in the sewage treatment device, the total dosage of the activated carbon fillers is 0.5-3g/L; the residual biological carbon and sludge in the clarification tank are abandoned. The sewage treatment device has the beneficial effects that by utilizing the designed structure, efficient purification of sewage can be achieved as long as the dosage of activated carbon accounts for at most 50% (even only 10%) of the original dosage, thus effectively reducing the usage amount of activated carbon; besides, efficient removal of nitrogen in the sewage is simply achieved without additionally adding organic carbon sources or internal circulation.
Description
Technical field
The present invention relates to sewage treatment area, particularly relate to a kind of Powdered Activated Carbon waste disposal plant and sewage water treatment method thereof of improvement.
Background technology
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 is once producing just because its advantage in economy and processing efficiency is 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 is used for municipal sewage treatment obviously can improve nitrification effect, and therefore various countries environmentalist has showed great interest to powdered activated carbon treatment process and carried out research extensively and profoundly.
A kind of method for high-efficiency combined treatment of dyeing waste water is disclosed in China publication CN101445311A, its utilize acidication-Powdered Activated Carbon process biological reinforced-combination process of coagulation and filtration, achieve effective process of dyeing waste water, there is the advantages such as floor space is little, sludge yield is low, investment running cost is low, effect stability.The effective treatment process of a kind of dyeing and printing sewage is disclosed in China publication CN102659280A, it is also 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.
In order to the problem that the sludge quantity solving Powdered Activated Carbon treatment process is large, propose Powdered Activated Carbon process-WAO (Wet Air Oxidation abroad, wet oxidation process) system, it combines the plurality of advantages of traditional Powdered Activated Carbon facture, and under the liquid-phase oxidation program of suitable temperature and pressure water, the biological sludge of surplus is destroyed and the pollution substance adsorbed in oxide powder filler biological mud, organically combine by WAO flow process and Powdered Activated Carbon facture, combine together, use the recycling realizing waste sludge, a kind ofly replace traditional active biological wastewater treatment flow process from structure, and simplify sludge treating block, the novel process of non-pollutant discharge.
But above-mentioned technique is loaded down with trivial details, and sludge quantity is still comparatively large, denitrogenates ability and effect also need to improve, and the technology and equipment of the simple and efficient of development of new is imperative.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, provide a kind of waste disposal plant of the multistage biological treatment of the Powdered Activated Carbon without backflow, 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 waste disposal plant of the multistage Powdered Activated Carbon biological activity process without backflow (is referred to as " CBR
s-R "); it comprises the multistage anoxic pond and Aerobic Pond, flocculation tank and the settling pond that repeat series connection; wherein; at least in the first anoxic pond, add active carbon filler; in described waste disposal plant; total dosage of active carbon filler is 0.5-3g/L, the residue biological carbon mud waste disposal of described settling pond.
According to the present invention, comprise two-stage, three or more level repeat connect anoxic pond and Aerobic Pond.
According to the present invention, if two-stage repeats series connection, in the second anoxic pond, also add active carbon filler; If three grades repeat connect, also add active carbon filler in second, third anoxic pond; By that analogy.
According to the present invention, described active carbon filler all adds anoxic pond.
According to the present invention, the whole one-level of described active carbon filler adds, or point two-stage, three or more level add.If two-stage repeats to connect, described active carbon filler or all add the first anoxic pond, or a part adds the first anoxic pond and another part adds the second anoxic pond; If three grades are repeated to connect, described active carbon filler or all add the first anoxic pond, or point three parts add in three anoxic pond respectively; By that analogy.
According to the present invention, described active carbon filler all adds the first anoxic pond, and preferably, its dosage is 0.6-2.8g/L, more preferably 1-2g/l.Such as 0.8,1.0,1.5,2.0,2.5g/L.
According to the present invention, if a point two-stage adds, then 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.
According to the present invention, if a point two-stage adds, then the dosage in described first anoxic pond accounts for the 60-80% of total dosage, and the dosage in the second anoxic pond accounts for the 20-40% of total dosage.More preferably, the dosage in described first anoxic pond accounts for the 65-75% of total dosage, and the dosage in the second anoxic pond accounts for the 25-45% 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, if two-stage repeats series connection, described sewage divides two stocks not enter the first anoxic pond and the second anoxic pond; If three grades repeat connect, described sewage divides three stocks not enter the first anoxic pond, the second anoxic pond and the 3rd anoxic pond; By that analogy.
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 described anoxic pond at different levels, be provided with whipping appts.
According to the present invention, in described Aerobic Pond at different levels, be provided with aerating apparatus.
According to the present invention, without the need to internal recycle between each Aerobic Pond of described device and anoxic pond.
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, coal chemical industrial waste water, coking chemical waste water, organic chemical waste water; And municipal sewage treatment.
The invention still further relates to the purposes of described device in process waste water.
The invention has the beneficial effects as follows:
1, the structure utilizing the present invention to design, gac adopts single-stage 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, adopt simple means, organically combine traditional activated sludge process and Powdered Activated Carbon facture, without the need to additionally adding organic carbon source, without the need to internal recycle, 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 sludge quantity can also be realized.
Accompanying drawing explanation
The structural representation of the waste disposal plant of the present invention in Fig. 1 embodiment 1
The structural representation of the waste disposal plant of the present invention in Fig. 2 embodiment 2
The structural representation of the waste disposal plant of the present invention in Fig. 3 embodiment 3
Embodiment
As mentioned above, the invention discloses a kind of waste disposal plant (" CBR of the multistage Powdered Activated Carbon biological activity process without backflow
s-R ").Compared with existing technique, 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, then respectively lower than 15mg/L and 6.0mg/L, equal even to be better than existing technique.
Specifically, the present invention is ingenious to be combined the traditional activated sludge process after improving and Powdered Activated Carbon facture, namely achieves effective minimizing of described active carbon filler, effectively controls sludge quantity again, and denitrogenates efficiency and do not reduce and even slightly improve.Visible, the present invention, by a simple structure design, solves problem efficiently, and adaptability is wide again, is easy to industrialization.
Of the present invention one preferred embodiment in, preferably be distributed in the amount of the gac in anoxic pond at different levels, specifically, if point two-stage adds, dosage then 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.By such mode, taken into account decrement and the efficiency of gac, when decrement, efficiency improves on the contrary, better achieves object of the present invention.
Of the present invention one preferred embodiment in, the preferred partition ratio of sewage, specifically, if two-stage repeats to connect, described sewage divides two stocks not enter the first anoxic pond and the second anoxic pond.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 and n1:n2=(6 ~ 9): (1 ~ 4); If all thrown in gac in the first and second anoxic pond, then n1:n2=(5 ~ 9): (1 ~ 5).By such design, effectively combine the service efficiency of gac and sewage, applicant finds, in the scope that the present invention selects, and gac most effective; And the efficient removal of nitrogen can be realized completely without the need to additional carbon; In addition, achieve and can efficiently remove ammonia nitrogen and total nitrogen without the need to internal recycle, greatly simplify equipment and running cost.
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, flocculation tank and settling pond.Added active carbon filler in described first anoxic pond and the second anoxic pond, dosage is respectively 1.8g/L and 0.2g/L.Whipping appts is provided with in first anoxic pond and the second anoxic pond.Aerating apparatus is provided with in first Aerobic Pond and the second Aerobic Pond.Between each Aerobic Pond and anoxic pond, internal recycle is not set.Sewage divides two stocks not enter the first anoxic pond and the second anoxic pond, partition ratio n1:n2=6:4.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 1:1.Residue biological carbon mud waste treatment in settling pond.
Embodiment 2
As shown in Figure 2, the inventive system comprises the first anoxic pond, the first Aerobic Pond, the second anoxic pond, the second Aerobic Pond, flocculation tank and settling pond.Added active carbon filler in described first anoxic pond and the second anoxic pond, dosage is respectively 0.6g/L and 0.4g/L.Whipping appts is provided with in first anoxic pond and the second anoxic pond.Aerating apparatus is provided with in first Aerobic Pond and the second Aerobic Pond.Between each Aerobic Pond and anoxic pond, internal recycle is not set.Sewage divides two stocks not enter the first anoxic pond and the second anoxic pond, partition ratio n1:n2=5:5.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 1.5:1.Residue biological carbon mud waste treatment in settling pond.
Embodiment 3
As shown in Figure 3, the inventive system comprises the first anoxic pond, the first Aerobic Pond, the second anoxic pond, the second Aerobic Pond, flocculation tank and settling pond.Added active carbon filler in described first anoxic pond, dosage is 1.5g/L.Whipping appts is provided with in first anoxic pond and the second anoxic pond.Aerating apparatus is provided with in first Aerobic Pond and the second Aerobic Pond.Between each Aerobic Pond and anoxic pond, internal recycle is not set.Sewage divides two stocks not enter the first anoxic pond and the second anoxic pond, partition ratio n1:n2=8:2.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 1:1.Residue biological carbon mud waste treatment in settling pond.
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 (8)
1. the waste disposal plant of a multistage Powdered Activated Carbon biological activity process without backflow, it comprises the multistage anoxic pond and Aerobic Pond, flocculation tank and the settling pond that repeat series connection, wherein, at least in the first anoxic pond, add active carbon filler, in described waste disposal plant, total dosage of active carbon filler is 0.5-3g/L, the residue biological carbon mud waste disposal of described settling pond.
2. device according to claim 1, is characterized in that, described device comprises two-stage, three or more level repeats series connection anoxic pond and Aerobic Pond.
Preferably, if two-stage repeats series connection, in described second anoxic pond, also active carbon filler is added; If three grades repeat connect, also add active carbon filler in second, third anoxic pond; By that analogy.
Preferably, described active carbon filler all adds anoxic pond.
Preferably, the whole one-level of described active carbon filler adds, or point two-stage, three or more level add.If two-stage repeats to connect, described active carbon filler or all add the first anoxic pond, or a part adds the first anoxic pond and another part adds the second anoxic pond; If three grades are repeated to connect, described active carbon filler or all add the first anoxic pond, or point three parts add in three anoxic pond respectively; By that analogy.
Preferably, described active carbon filler all adds the first anoxic pond, and preferably, its dosage is 0.6-2.8g/L, more preferably 1-2g/l.Such as 0.8,1.0,1.5,2.0,2.5g/L.
Preferably, if a point two-stage adds, then 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.More preferably, the dosage in described first anoxic pond accounts for the 60-80% of total dosage, and the dosage in the second anoxic pond accounts for the 20-40% of total dosage.More preferably, the dosage in described first anoxic pond accounts for the 65-75% of total dosage, and the dosage in the second anoxic pond accounts for the 25-45% of total dosage.
3. device according to claim 1 and 2, is characterized in that, the volume ratio of described first Aerobic Pond and the first anoxic pond is about 2:1.
Preferably, the volume ratio of described second Aerobic Pond and the second anoxic pond is (2 ~ 1): 1.
4. device according to any one of claim 1 to 3, is characterized in that, if two-stage repeats series connection, described sewage divides two stocks not enter the first anoxic pond and the second anoxic pond; If three grades repeat connect, described sewage divides three stocks not enter the first anoxic pond, the second anoxic pond and the 3rd anoxic pond; By that analogy.
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).Partition ratio can also be (7 ~ 8) than n1:n2: (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).
5. device according to any one of claim 1 to 4, is characterized in that, is provided with whipping appts in described anoxic pond at different levels.
6. device according to any one of claim 1 to 5, is characterized in that, is provided with aerating apparatus in described Aerobic Pond at different levels.
7. device according to any one of claim 1 to 6, is characterized in that, without the need to internal recycle between each Aerobic Pond of described device and anoxic pond.
8. the device according to any one of claim 1 to 7 is used for the process of sewage, comprises trade effluent as the process of oil refining, petrochemical complex, dyeing waste water, coal chemical industrial waste water, coking chemical waste water, organic chemical waste water; And municipal sewage treatment.
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