CN104609671B - Multistage reflux powdered activated carbon bioactive sewage treatment device - Google Patents
Multistage reflux powdered activated carbon bioactive sewage treatment device Download PDFInfo
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- CN104609671B CN104609671B CN201510046549.9A CN201510046549A CN104609671B CN 104609671 B CN104609671 B CN 104609671B CN 201510046549 A CN201510046549 A CN 201510046549A CN 104609671 B CN104609671 B CN 104609671B
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Abstract
The invention relates to a multistage 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 reused after concentration. 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 is 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 improvement Powdered Activated Carbon sewage-treatment plant and
Sewage water treatment method.
Background technology
Powdered activated carbon treatment process method not only maintains the advantage of traditional activated sludge process, as well as activated carbon
The addition of adsorbent and significantly improve the clearance of organic and inorganic pollutant.This method once produce just because of its economical with
Advantage in terms for the treatment of effeciency is widely used in industrial wastewater, such as: oil refining, petrochemical industry, dyeing waste water, coking chemical waste water, have
The process of machine wastewater from chemical industry, this method can obviously improve nitrification effect for municipal sewage treatment, therefore various countries environmentalist couple
Powdered activated carbon treatment process is demonstrated by great interest and has carried out research extensively and profoundly.
Disclosing the method for high-efficiency combined treatment of a kind of dyeing waste water in China's publication CN101445311A, it utilizes
Hydrolysis acidification-Powdered Activated Carbon processes the group technology of biological reinforced-coagulation and filtration, it is achieved that effective process of dyeing waste water,
There is the advantages such as floor space is little, sludge yield is low, investment low, the effect stability of operating cost.China's publication
Disclosing a kind of effective processing method of dyeing and printing sewage in CN102659280A, it is also by hydrolysis acidification, Powdered Activated Carbon
Reason and flocculation process combination realize the process of described sewage, solve traditional handicraft poor processing effect, effluent quality unstable,
The problems such as floor space is big, sludge output is big, processing cost is high.China's publication CN103086503A discloses a kind of improvement
Powdered activated carbon treatment process, it is to have cultivated a kind of activated carbon-microbial bacteria micelle, thus adds the particle diameter of activated carbon
And proportion, enhance treatment effect.
The problem big in order to solve the sludge quantity of Powdered Activated Carbon processing method, abroad propose Powdered Activated Carbon process-
WAO (Wet Air Oxidation, wet oxidation process) system, it combines the many excellent of traditional Powdered Activated Carbon facture
Point, and under the liquid phase oxidation program of suitable temperature and press water, superfluous biological sludge is destroyed and oxide powder filler
The polluter of absorption in biological sludge, WAO flow process will organically combine with Powdered Activated Carbon facture, combines together, use
Realize the recycling of waste sludge, be a kind of from structure, to replace traditional active biological wastewater treatment flow process, 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 the biggest, denitrogenates ability and effect also need to improve, develop novel
Technique and the equipment of simple and efficient are imperative.
Summary of the invention
It is an object of the invention to overcome deficiency of the prior art, it is provided that a kind of multistage Powdered Activated Carbon life having backflow
The sewage-treatment plant that thing processes, the suitability is strong, simple and efficient, is suitable to industrialization.
The present invention is achieved through the following technical solutions:
(trade mark is " CBR to the sewage-treatment plant that a kind of multistage Powdered Activated Carbon biological activity having backflow processesS-R "),
It includes the multistage anoxic pond repeating series connection and Aerobic Pond, flocculation tank and depositing reservoir, wherein, at least adds in the first anoxic pond
Active carbon filler, in described sewage-treatment plant, total dosage of active carbon filler is 0.5-3g/L, the residue of described depositing reservoir
The concentrated rear reuse of biological carbon mud.
According to the present invention, repeat anoxic pond and the Aerobic Pond of series connection including two-stage, three or more level.
According to the present invention, if two-stage repeats series connection, the second anoxic pond also adds active carbon filler；If three grades of weights
Multiple series connection, second, third anoxic pond also adds active carbon filler；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
Repeat series connection, described active carbon filler or all addition the first anoxic pond, or a part for two-stage and add the first anoxia
Pond and another part adds the second anoxic pond；If three grades are repeated series connection, described active carbon filler or all add first
Anoxic pond, or divide three parts to be separately added in three anoxic pond；By that analogy.
According to the present invention, described active carbon filler all adds the first anoxic pond, it is preferable that 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, the
Dosage in two anoxic pond accounts for the 10-50% of total dosage.
According to the present invention, if a point two-stage adds, the dosage in the most described first anoxic pond accounts for the 60-of total dosage
80%, the dosage in the second anoxic pond accounts for the 20-40% of total dosage.It is highly preferred that adding in described first anoxic pond
Amount 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 strands to respectively enter the first anoxic pond and second
Anoxic pond；If three grades are repeated series connection, described sewage divides three strands to respectively enter the first anoxic pond, the second anoxic pond and the 3rd and lacks
Oxygen pond；By that analogy.
According to the present invention, in the partition coefficient of described two strands of sewage, the partition coefficient n1 of the first anoxic pond represents, second
The partition coefficient n2 of anoxic pond represents, if only adding activated carbon, then n1:n2=(6～9) in the first anoxic pond: (1～4).
Partition coefficient can also be (7～8) than n1:n2: (2～3).
According to the present invention, if the first and second anoxic pond have all been thrown in activated carbon, then n1:n2=(5～9): (1～5),
Preferably (6～8): (2～4)；Can also be (5～6): (4～5).
According to the present invention, described anoxic pond at different levels are provided with agitating device.
According to the present invention, described Aerobic Ponds at different levels are provided with aerator.
According to the present invention, reuse after the regeneration of described residue biological carbon mud concentrated entrance biological carbon mud regenerative system.
According to the present invention, the carbon mud of described reuse enters the first anoxic pond.
According to the present invention, if two-stage repeats series connection, the carbon mud of described reuse respectively enters the first anoxic pond and second
Anoxic pond；If three grades are repeated series connection, the carbon mud of described reuse respectively enters the first anoxic pond, the second anoxic pond and the 3rd and lacks
Oxygen pond；By that analogy.
According to the present invention, if two-stage repeats series connection, described in be back in the partition coefficient of carbon mud of anoxic pond, first
The partition coefficient m1 of anoxic pond represents, the partition coefficient m2 of the second anoxic pond represents, if only adding in the first anoxic pond
Activated carbon, then m1:m2=(6～9): (1～4).Partition coefficient can also be (7～8) than m1:m2: (2～3).
According to the present invention, if the first and second anoxic pond have all been thrown in activated carbon, then m1:m2=(5～9): (1～5),
Preferably (6～8): (2～4)；Can also be (5～6): (4～5).
According to the present invention, the carbon mud of described reuse enters the first Aerobic Pond.
According to the present invention, if two-stage repeats series connection, the carbon mud of described reuse respectively enters the first Aerobic Pond and second
Aerobic Pond；If three grades are repeated series connection, it is good that the carbon mud of described reuse respectively enters the first Aerobic Pond, the second Aerobic Pond and the 3rd
Oxygen pond；By that analogy.
According to the present invention, if two-stage repeats series connection, described in be back in the partition coefficient of carbon mud of Aerobic Pond, first
The partition coefficient p1 of Aerobic Pond represents, the partition coefficient p2 of the second Aerobic Pond represents, and p1:p2=(6～9): (1～4).
Partition coefficient can also be (7～8) than p1:p2: (2～3).
According to the present invention, without interior circulation between each Aerobic Pond and the anoxic pond of described device.
Inventive apparatus can be readily adapted the process of multiple sewage, including industrial wastewater such as: oil refining, petrochemical industry, print
Dye waste water, coal chemical industrial waste water, coking chemical waste water, the process of organic chemical waste water；And municipal sewage treatment.
The invention has the beneficial effects as follows:
1, utilizing the structure that the present invention designs, activated carbon uses single-stage or classification to throw in, and injected volume is only former injected volume
Most 50% (even can simply be 10%) high-efficient purification of sewage can be realized, be effectively saved the usage amount of activated carbon.
2, use simple means, organically combine traditional activated sludge process and Powdered Activated Carbon facture, it is not necessary to volume
Outer interpolation organic carbon source, it is not necessary to interior circulation, the efficient removal of nitrogen in simple realization sewage.
3, in the case of need not traditional WAO technique, it is also possible to realize effective reuse and the sludge quantity of biological carbon mud
Minimizing the 90% of traditional handicraft (only the most less).
Accompanying drawing explanation
The structural representation of the sewage-treatment plant of the present invention in Fig. 1 embodiment 1
The structural representation of the sewage-treatment plant of the present invention in Fig. 2 embodiment 2
The structural representation of the sewage-treatment plant of the present invention in Fig. 3 embodiment 3
The structural representation of the sewage-treatment plant of the present invention in Fig. 4 embodiment 4
Detailed description of the invention
As it has been described above, the invention discloses the sewage disposal that a kind of multistage Powdered Activated Carbon biological activity having backflow processes
(trade mark is " CBR to deviceS-R”).Active carbon filler compared with existing powdered activated carbon treatment process, in apparatus of the present invention
Dosage be up to existing device dosage about 50%, its sludge quantity then only have existing powdered activated carbon treatment process
90% or lower, but its device properly functioning after total nitrogen and ammonia nitrogen amount then be respectively lower than 15mg/L and 6.0mg/L, be equal to
Even better than existing powdered activated carbon treatment process.
Specifically, in the present invention ingenious will improve after traditional activated sludge process and Powdered Activated Carbon facture combine
Getting up, (trade mark is " CBRS-R "), both achieved effective minimizing of described active carbon filler, and the most effectively controlled sludge quantity, and remove
Nitrogen efficiency does not the most reduce and the most slightly improves.Visible, the present invention is designed by a simple structure, solves efficiently and asks
Topic, adaptability is the widest, it is easy to industrialization.
One of the present invention preferred embodiment in, the preferably amount of distribution activated carbon in anoxic pond at different levels,
Specifically, if what point two-stage added, then the dosage in the first anoxic pond accounts for the 50-90% of total dosage, the second anoxic pond
In dosage account for the 10-50% of total dosage.By such mode, decrement and the efficiency of activated carbon are taken into account, in decrement
In the case of, efficiency improves on the contrary, preferably achieves the purpose of the present invention.
One of the present invention preferred embodiment in, the preferably partition coefficient of sewage, specifically, if two-stage weight
Multiple series connection, described sewage divides two strands to respectively enter the first anoxic pond and the second anoxic pond.The partition coefficient of described two strands of sewage
In, the partition coefficient n1 of the first anoxic pond represents, the partition coefficient n2 of the second anoxic pond represents, if only in the first anoxic pond
Middle interpolation activated carbon, then n1:n2=(6～9): (1～4)；If the first and second anoxic pond have all been thrown in activated carbon, then n1:
N2=(5～9): (1～5).By such design, effectively combine the service efficiency of activated carbon and sewage, it has been found that
In the range of the present invention selects, the efficiency of activated carbon is the highest；And efficiently going of nitrogen can be realized without additional carbon completely
Remove；Moreover, it is achieved that can efficiently remove ammonia nitrogen and total nitrogen without interior circulation, greatly simplify equipment and operating cost.
One of the present invention preferred embodiment in, the preferably partition coefficient of carbon mud, specifically, if two-stage weight
Multiple series connection, in first scheme, the carbon mud of described reuse enters the first anoxic pond；Preferably, the carbon mud of described reuse enters respectively
Enter the first anoxic pond and the second anoxic pond；Preferably, described in be back in the partition coefficient of carbon mud of anoxic pond, the first anoxic pond
Partition coefficient m1 represent, the partition coefficient m2 of the second anoxic pond represents, if only in the first anoxic pond add activated carbon,
Then m1:m2=(6～9): (1～4)；If the first and second anoxic pond all having been thrown in activated carbon, then m1:m2=(5～9): (1
～5).In alternative plan, the carbon mud of described reuse enters the first Aerobic Pond；Preferably, the carbon mud of described reuse respectively enters
One Aerobic Pond and the second Aerobic Pond；Preferably, described in be back in the partition coefficient of carbon mud of Aerobic Pond, the first Aerobic Pond point
Distribution coefficient p1 represents, the partition coefficient p2 of the second Aerobic Pond represents, and p1:p2=(6～9): (1～4).By such
Design, effectively combines activated carbon and the service efficiency of carbon mud, it has been found that in the range of the present invention selects, entirely without
Need additional carbon can realize the efficient removal of nitrogen；Moreover, it is achieved that can efficiently remove ammonia nitrogen and total nitrogen, pole without interior circulation
The big equipment that simplifies and operating cost.Further, by such design, it is achieved that the further minimizing of sludge quantity, also
Achieve the efficient reuse efficiency of described carbon mud.
Below in conjunction with specific embodiment, the present invention is further elaborated, but the present invention is not limited to following example.Institute
Method of stating is conventional method if no special instructions.Described raw material the most all can be either commercially available from open.
It addition, the biological carbon mud regenerative system the most existing WAO system described in following embodiment.
Embodiment 1
As it is shown in figure 1, the inventive system comprises the first anoxic pond, the first Aerobic Pond, the second anoxic pond, second aerobic
Pond, flocculation tank and depositing reservoir.Adding active carbon filling material in described first anoxic pond and the second anoxic pond, dosage is respectively
1.5g/L and 0.5g/L.First anoxic pond and the second anoxic pond are provided with agitating device.First Aerobic Pond and the second Aerobic Pond
In be provided with aerator.Interior circulation it is not provided with between each Aerobic Pond and anoxic pond.Sewage divides two strands to respectively enter the first anoxia
Pond and the second anoxic pond, partition coefficient n1:n2=6:4.The volume ratio of the first Aerobic Pond and the first anoxic pond is 2:1, second best
Oxygen pond is 1:1 with the volume ratio of the second anoxic pond.Residue biological carbon mud after biological carbon mud regenerative system regenerates divides two stocks
Do not enter the first anoxic pond and the second anoxic pond, partition coefficient m1:m2=6:4.
Embodiment 2
As in figure 2 it is shown, the inventive system comprises the first anoxic pond, the first Aerobic Pond, the second anoxic pond, second aerobic
Pond, flocculation tank and depositing reservoir.Adding active carbon filling material in described first anoxic pond and the second anoxic pond, dosage is respectively
0.7g/L and 0.3g/L.First anoxic pond and the second anoxic pond are provided with agitating device.First Aerobic Pond and the second Aerobic Pond
In be provided with aerator.Interior circulation it is not provided with between each Aerobic Pond and anoxic pond.Sewage divides two strands to respectively enter the first anoxia
Pond and the second anoxic pond, partition coefficient n1:n2=5:5.The volume ratio of the first Aerobic Pond and the first anoxic pond is 2:1, second best
Oxygen pond is 1.5:1 with the volume ratio of the second anoxic pond.Residue biological carbon mud after biological carbon mud regenerative system regenerates divides two strands
Respectively enter the first Aerobic Pond and the second Aerobic Pond, partition coefficient p1:p2=6:4.
Embodiment 3
As it is shown on figure 3, the inventive system comprises the first anoxic pond, the first Aerobic Pond, the second anoxic pond, second aerobic
Pond, flocculation tank and depositing reservoir.Adding active carbon filling material in described first anoxic pond, dosage is 1.6g/L.First anoxic pond
It is provided with agitating device with in the second anoxic pond.First Aerobic Pond and the second Aerobic Pond are provided with aerator.Each Aerobic Pond
And between anoxic pond, it is not provided with interior circulation.Sewage divides two strands to respectively enter the first anoxic pond and the second anoxic pond, partition coefficient 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 after biological carbon mud regenerative system regenerates divides two strands to respectively enter the first anoxic pond and the second anoxia
Pond, partition coefficient p1:p2=8:2.
Embodiment 4
As shown in Figure 4, the inventive system comprises the first anoxic pond, the first Aerobic Pond, the second anoxic pond, second aerobic
Pond, flocculation tank and depositing reservoir.Adding active carbon filling material in described first anoxic pond, dosage is 2.0g/L.First anoxic pond
It is provided with agitating device with in the second anoxic pond.First Aerobic Pond and the second Aerobic Pond are provided with aerator.Each Aerobic Pond
And between anoxic pond, it is not provided with interior circulation.Sewage divides two strands to respectively enter the first anoxic pond and the second anoxic pond, partition coefficient 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 after biological carbon mud regenerative system regenerates enters the first anoxic pond.
Embodiment 5-8
Embodiment 5-8 respectively corresponding embodiment 1-4, be different only in that biological carbon mud after concentrated with regard to direct reuse.
Comparative example 1
Traditional Powdered Activated Carbon processing means, including anoxic pond, Aerobic Pond, flocculation tank and depositing reservoir, active carbon filler
Addition be 9g/L.
Comparative example 2
Traditional Powdered Activated Carbon processes-WAO device, including anoxic pond, Aerobic Pond, flocculation tank and depositing reservoir, and WAO
System, the addition of active carbon filler is 8g/L.
The device using comparative example 1-2 and embodiment 1-8 carries out a kind of municipal sewage (its water quality is shown in Table 1) respectively
Processing, the results are shown in Table 2 for it.
The water quality of table 1 municipal sewage
| CODAlways(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
The device using comparative example 1-2 and embodiment 1-8 carries out a kind of coal chemical industrial waste water (its water quality is shown in Table 3) respectively
Process, the results are shown in Table 4 for it.
The water quality of table 3 coal chemical industrial waste water
| CODAlways(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 used only to illustrate the technical characteristic of the present invention, it is not intended to limit this
Bright claimed scope.With the technical scheme same principle of the present application content part, still belong to the present invention and asked
The category of protection.
Claims (28)
1. the sewage-treatment plant that the multistage Powdered Activated Carbon biological activity having backflow processes, it includes that multistage repetition is connected
Anoxic pond and Aerobic Pond, flocculation tank and depositing reservoir, wherein, in the first anoxic pond, at least add active carbon filler, described dirt
In water treatment facilities, total dosage of active carbon filler is 0.5-3g/L, after the residue biological carbon mud of described depositing reservoir is concentrated
Reuse；
Include described device two-stage, three or more level repeat anoxic pond and the Aerobic Pond of series connection；
If two-stage repeats series connection, described sewage divides two strands to respectively enter the first anoxic pond and the second anoxic pond；If three grades
Repeating series connection, described sewage divides three strands to respectively enter the first anoxic pond, the second anoxic pond and the 3rd anoxic pond；By that analogy；
Without interior circulation between each Aerobic Pond and the anoxic pond of described device；
Described active carbon filler all adds anoxic pond；
The volume ratio of described first Aerobic Pond and the first anoxic pond is 2:1；
The volume ratio of described second Aerobic Pond and the second anoxic pond is (2～1): 1.
Device the most according to claim 1, it is characterised in that if two-stage repeats series connection, in described second anoxic pond
Add active carbon filler；If three grades are repeated series connection, second, third anoxic pond also adds active carbon filler；By that analogy.
Device the most according to claim 1, it is characterised in that the whole one-level of described active carbon filler adds, or divide two
Level, three or more level add；
If two-stage repeats series connection, described active carbon filler or all add the first anoxic pond, or a part add the
One anoxic pond and another part adds the second anoxic pond；
If three grades are repeated series connection, described active carbon filler or all addition the first anoxic pond, or point three parts are respectively
Add in three anoxic pond；By that analogy.
Device the most according to claim 3, it is characterised in that described active carbon filler all adds the first anoxic pond.
Device the most according to claim 4, it is characterised in that the dosage of described active carbon filler is 0.6-2.8g/L.
Device the most according to claim 5, it is characterised in that the dosage of described active carbon filler is 1-2g/L.
Device the most according to claim 5, it is characterised in that the dosage of described active carbon filler is 0.8,1.0,1.5,
2.0 or 2.5g/L.
Device the most according to claim 3, it is characterised in that described active carbon filler point two-stage adds, the first anoxic pond
In dosage account for the 50-90% of total dosage, the dosage in the second anoxic pond accounts for the 10-50% of total dosage.
Device the most according to claim 8, it is characterised in that the dosage in described first anoxic pond accounts for total dosage
60-80%, the dosage in the second anoxic pond accounts for the 20-40% of total dosage.
Device the most according to claim 1, it is characterised in that repeat series connection, the distribution of described two strands of sewage for two-stage
In coefficient, the partition coefficient n1 of the first anoxic pond represents, the partition coefficient n2 of the second anoxic pond represents, if only lacking first
Interpolation activated carbon, then n1:n2=(6～9) in oxygen pond: (1～4)；
If the first and second anoxic pond all having been thrown in activated carbon, then n1:n2=(5～9): (1～5).
11. devices according to claim 10, it is characterised in that only adding activated carbon in the first anoxic pond, n1:n2 is
(7～8): (2～3).
12. devices according to claim 10, it is characterised in that all thrown in activated carbon in the first and second anoxic pond,
N1:n2=(6～8): (2～4).
13. devices according to claim 10, it is characterised in that all thrown in activated carbon in the first and second anoxic pond,
N1:n2=(5～6): (4～5).
14. according to the device according to any one of claim 1 to 13, it is characterised in that be provided with in described anoxic pond at different levels
Agitating device.
15. according to the device described in any one of claim 1-13, it is characterised in that be provided with aeration in described Aerobic Ponds at different levels
Device.
16. according to the device according to any one of claim 1 to 13, it is characterised in that described residue biological carbon mud is concentrated
Enter reuse after the regeneration of liquid-phase C mud regenerative system.
17. devices according to claim 16, it is characterised in that the carbon mud of described reuse enters the first anoxic pond.
18. devices according to claim 16, it is characterised in that if two-stage repeats series connection, the carbon mud of described reuse
Respectively enter the first anoxic pond and the second anoxic pond；If three grades are repeated series connection, the carbon mud of described reuse respectively enters first
Anoxic pond, the second anoxic pond and the 3rd anoxic pond；By that analogy.
19. devices according to claim 18, it is characterised in that for two-stage repeat series connection, described in be back to anoxic pond
Carbon mud partition coefficient in, the partition coefficient m1 of the first anoxic pond represents, the partition coefficient m2 of the second anoxic pond represents,
If only adding activated carbon, then m1:m2=(6～9) in the first anoxic pond: (1～4)；
If the first and second anoxic pond all having been thrown in activated carbon, then m1:m2=(5～9): (1～5).
20. devices according to claim 19, it is characterised in that only add activated carbon, m1:m2=in the first anoxic pond
(7～8): (2～3).
21. devices according to claim 19, it is characterised in that all thrown in activated carbon in the first and second anoxic pond,
M1:m2=(6～8): (2～4).
22. devices according to claim 19, it is characterised in that all thrown in activated carbon in the first and second anoxic pond,
M1:m2=(5～6): (4～5).
23. devices according to claim 16, it is characterised in that the carbon mud of described reuse enters the first Aerobic Pond.
24. devices according to claim 16, it is characterised in that if two-stage repeats series connection, the carbon mud of described reuse
Respectively enter the first Aerobic Pond and the second Aerobic Pond；If three grades are repeated series connection, the carbon mud of described reuse respectively enters first
Aerobic Pond, the second Aerobic Pond and the 3rd Aerobic Pond；By that analogy.
25. devices according to claim 24, it is characterised in that for two-stage repeat series connection, described in be back to Aerobic Pond
Carbon mud partition coefficient in, the partition coefficient p1 of the first Aerobic Pond represents, the partition coefficient p2 of the second Aerobic Pond represents,
And p1:p2=(6～9): (1～4).
26. devices according to claim 25, it is characterised in that p1:p2=(7～8): (2～3).
Device according to any one of 27. claim 1 to 26 is for the process of sewage, including Industrial Wastewater Treatment；Or city
Sewage disposal.
28. process for sewage according to claim 27, it is characterised in that described industrial wastewater is selected from: oil refining, stone
Oiling work, dyeing waste water, coal chemical industrial waste water, coking chemical waste water, organic chemical waste water.
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| CN106116065A (en) * | 2016-09-10 | 2016-11-16 | 安徽蓝鼎环保能源科技有限公司 | A kind of multi-layer type sewage treatment device |
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