CN104671596B - A kind of sewage-treatment plant with parallel-connection structure - Google Patents
A kind of sewage-treatment plant with parallel-connection structure Download PDFInfo
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- CN104671596B CN104671596B CN201510044904.9A CN201510044904A CN104671596B CN 104671596 B CN104671596 B CN 104671596B CN 201510044904 A CN201510044904 A CN 201510044904A CN 104671596 B CN104671596 B CN 104671596B
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Abstract
The present invention relates to a kind of sewage-treatment plant of coking chemical waste water with parallel-connection structure, and it includes the multistage anoxic pond for repeating series connection and Aerobic Pond, flocculation tank and depositing reservoir；Wherein, there is one-level anoxic pond to be made up of two anoxic ponds in parallel, or there is one-level Aerobic Pond to be made up of two Aerobic Ponds in parallel；Wherein, active carbon filler is added in the first anoxic pond, in the sewage-treatment plant, total dosage of the active carbon filler is 0.5 3g/L.The structure designed using the present invention, activated carbon injected volume are only the high-efficient purification of most 50% i.e. achievable sewage of former injected volume, are effectively saved the usage amount of activated carbon.In addition, without additionally adding organic carbon source, without interior circulation, the efficient removal of nitrogen and other pollutants in simple realization coking chemical waste water.
Description
Technical field
The present invention relates to sewage treatment area, more particularly to a kind of sewage-treatment plant with parallel-connection structure and its dirt
Method for treating water.
Background technology
Coking chemical waste water is produced in the production process of the dry distillation of coal, coal gas cooling, steel-making, the purification of coal gas and chemical products
The heterocycle containing the inorganic pollutions such as ammonia nitrogen in high density, cyanogen and thiocyanate and a large amount of difficult for biological degradation and Ppolynuclear aromatic chemical combination
The industrial wastewater of thing.
Coking chemical waste water passes through the processing of conventional activated sludge process, has certain removal effect to materials such as the phenol in waste water, cyanogen,
And to CODCrAnd the removal efficiency extreme difference of ammonia nitrogen.
Powdered activated carbon treatment process method not only maintains the advantages of traditional activated sludge process, as well as activated carbon
The addition of adsorbent and significantly improve the clearance of organic and inorganic pollutant.The method once produce just because its it is economical with
Advantage in terms for the treatment of effeciency is widely used in industrial wastewater such as：It is oil refining, petrochemical industry, dyeing waste water, coking chemical waste water, organic
The processing of wastewater from chemical industry, therefore various countries environmentalist is demonstrated by great interest to powdered activated carbon treatment process and carried out
Research extensively and profoundly.
The preconditioning technique of currently used coking chemical waste water has hydrolysis acidification method, the precipitation method, ultrasound wave irradiation method and light electrolysis
Method.By the combination with two stage treatment method (such as activated sludge process bioanalysis), effective processing of coking chemical waste water is realized.
But the requirement of national water standard can not be still fully achieved in the waste water of above method processing, have to be developed more effective
The handling process of coking chemical waste water.
The content of the invention
It is an object of the invention to overcome deficiency of the prior art, there is provided a kind of sewage disposal dress with parallel-connection structure
Put, strong applicability, it is simple and efficient, suitable for industrialization.
The present invention is achieved through the following technical solutions：
A kind of sewage-treatment plant with parallel-connection structure (is referred to as " CBRS- R "), it includes lacking for multistage repetition series connection
Oxygen pond and Aerobic Pond, flocculation tank and depositing reservoir；
Wherein, there is one-level anoxic pond to be made up of two anoxic ponds in parallel, or have one-level Aerobic Pond in parallel by two
Aerobic Pond is formed；
Wherein, active carbon filler is added in the first anoxic pond, in the sewage-treatment plant, the active carbon filler
Total dosage be 0.5-3g/L.
According to the present invention, described device includes two-stage, the anoxic pond and Aerobic Pond of three or more level repetition series connection.
According to the present invention, series connection is repeated if two-stage, then with a kind of following structures：
(1) first order anoxic pond is made up of two anoxic ponds in parallel；
(2) first order Aerobic Pond is made up of two Aerobic Ponds in parallel；
(3) second level anoxic pond is made up of two anoxic ponds in parallel；
(4) second level Aerobic Pond is made up of two Aerobic Ponds in parallel.
According to the present invention, series connection is repeated if three-level, then with a kind of following structures：
(1) first order anoxic pond is made up of two anoxic ponds in parallel；
(2) first order Aerobic Pond is made up of two Aerobic Ponds in parallel；
(3) second level anoxic pond is made up of two anoxic ponds in parallel；
(4) second level Aerobic Pond is made up of two Aerobic Ponds in parallel；
(5) third level anoxic pond is made up of two anoxic ponds in parallel；
(6) third level Aerobic Pond is made up of two Aerobic Ponds in parallel.
According to the present invention, series connection is repeated if more stages, by that analogy.
According to the present invention, at least one in other anoxic ponds except the first anoxic pond also adds active carbon filler.
Preferably, active carbon filler is all added in anoxic ponds at different levels.
According to the present invention, the active carbon filler all adds anoxic pond.
According to the present invention, the active carbon filler whole one-level adds, or divides two-stage, three or more level to add.
According to the present invention, if what point two-stage added, the dosage in first order anoxic pond accounts for the 50- of total dosage
90%, the dosage in the anoxic pond of the second level accounts for the 10-50% of total dosage.What if point three-level added, first order anoxic pond
In dosage account for the 40-80% of total dosage, the dosage in the anoxic pond of the second level accounts for the 10-30% of total dosage, the 3rd
Dosage in level anoxic pond accounts for the 10-30% of total dosage.
According to the present invention, when two anoxic ponds of parallel connection all add active carbon filler, its addition can be with identical or not
Together.The active carbon filler dosage ratio of two anoxic ponds in parallel can be (1~9)：(9~1), can also be (2~8)：
(8~2), either (3~7)：(7~3), (4~6)：(6~4), or 5：5.
According to the present invention, described device also includes a pretreatment unit, and the pretreatment unit is a photoelectrocatalysis
Oxidation unit.
According to the present invention, the photoelectrocatalysioxidization oxidization device is by the electrocatalysis oxidation apparatus and photocatalytic oxidation device connected
Composition.
According to the present invention, the first order Aerobic Pond and the volume ratio of first order anoxic pond are about 2:1.
According to the present invention, the second level Aerobic Pond and the volume ratio of second level anoxic pond are (2~1):1.
According to the present invention, the more stages Aerobic Pond and the volume ratio of more stages anoxic pond are (2~1):1.
According to the present invention, the sewage point multiply respectively enters multi-stage anaerobic pond.
According to the present invention, in the distribution coefficient of the multiply sewage, the distribution coefficient of first order anoxic pond is represented with n (1),
The distribution coefficient of second level anoxic pond represents that the distribution coefficient of third level anoxic pond is represented with n (3), xth level anoxic pond with n (2)
Distribution coefficient with n (x) represent.If two-stage, n (1)：N (2)=(6~9):(1~4), can also be (7~8):(2~3).
If three-level, n (1)：n(2)：N (3)=(6~9):(0.5~2):(0.5~2).By that analogy.
According to the present invention, agitating device is provided with each anoxic pond.
According to the present invention, aerator is provided with each Aerobic Pond.
According to the present invention, the remaining biological carbon mud waste disposal of the depositing reservoir.
According to the present invention, the concentrated rear reuse of remaining biological carbon mud of the depositing reservoir.
According to the present invention, the carbon mud of the reuse respectively enters each anoxic pond.
According to the present invention, in the distribution coefficient of the carbon mud for being back to anoxic pond, the distribution coefficient of first order anoxic pond
Being represented with m (1), the distribution coefficient of second level anoxic pond is represented with m (2), and the distribution coefficient of third level anoxic pond is represented with m (3),
The distribution coefficient of xth level anoxic pond is represented with m (x).If two-stage, m (1)：M (2)=(6~9):(1~4), can also be (7
~8):(2~3).If three-level, m (1)：m(2)：M (3)=(6~9):(0.5~2):(0.5~2).By that analogy.
According to the present invention, the carbon mud of the reuse respectively enters Aerobic Ponds at different levels.
According to the present invention, in the distribution coefficient of the carbon mud for being back to Aerobic Pond, the distribution coefficient of first order Aerobic Pond
Being represented with p (1), the distribution coefficient of second level Aerobic Pond is represented with p (2), and the distribution coefficient of third level Aerobic Pond is represented with p (3),
The distribution coefficient of xth level Aerobic Pond is represented with p (x).If two-stage, p (1)：P (2)=(6~9):(1~4), can also be (7
~8):(2~3).If three-level, p (1)：p(2)：P (3)=(6~9):(0.5~2):(0.5~2).By that analogy.
According to the present invention, without interior circulation between each Aerobic Pond and anoxic pond of described device.
Apparatus of the invention particularly useful for the processing of coking chemical waste water.Meanwhile to can be applicable to other more for described device
The processing of kind sewage, including industrial wastewater is such as：Oil refining, the processing of petrochemical industry, dyeing waste water, organic chemical waste water；And city
City's sewage disposal.
The beneficial effects of the invention are as follows：
1st, the structure designed using the present invention, activated carbon is launched using single-stage or classification, and injected volume is only former injected volume
Most 50% (or even can be only 10%) high-efficient purification of sewage can be achieved, be effectively saved the usage amount of activated carbon.
2nd, using simple means in parallel, and traditional activated sludge process and Powdered Activated Carbon facture have been organically combined,
Without additionally adding organic carbon source, without interior circulation, the efficient removal of nitrogen and other pollutants in simple realization coking chemical waste water.
3rd, in the case where not needing traditional WAO techniques, effective reuse and the sludge quantity of biological carbon mud can also be realized
The reduction of (being only the 90% of traditional handicraft).
4th, photochemical catalytic oxidation and Electrocatalytic Oxidation effectively are combined, uses it for the pretreatment of the coking chemical waste water, shown
Write the heterocycle and polycyclc aromatic compound for improving the inorganic pollutions such as cyanogen and the thiocyanate of waste water and a large amount of difficult for biological degradation
Clearance, be a kind of simple efficient sewage-treatment plant.
Brief description of the drawings
The structural representation of sewage-treatment plant of the invention in Fig. 1 embodiments 1
The structural representation of sewage-treatment plant of the invention in Fig. 2 embodiments 2
The structural representation of sewage-treatment plant of the invention in Fig. 3 embodiments 3
The structural representation of sewage-treatment plant of the invention in Fig. 4 embodiments 4
Embodiment
The sewage-treatment plant with parallel-connection structure is used (to be referred to as described above, the invention discloses coking chemical waste water
“CBRS-R”).Compared with existing powdered activated carbon treatment process, the dosage highest of the active carbon filler in apparatus of the present invention
For about the 50% of the dosage of existing device, its sludge quantity then only has the 90% of existing powdered activated carbon treatment process even more
It is low, but nitrogen pool after its device normal operation and ammonia nitrogen amount are then respectively lower than 15mg/L and 5.8mg/L and (handle other sewage such as
It is lower during municipal sewage), equal to even better than existing powdered activated carbon treatment process.
Specifically, the parallel-connection structure of an anoxic pond or Aerobic Pond has dexterously been used in the present invention, that is, has realized institute
Effective reduction of active carbon filler is stated, and effectively controls sludge quantity, and the processing to coking chemical waste water is horizontal and ability is also big
It is big to improve.It can be seen that the present invention efficiently solves problem, adaptability is again wide, is easy to industry by a simple structure design
Change.
In addition, disclosing a kind of pretreatment unit in the present invention, the pretreatment unit is that a photoelectrocatalysioxidization oxidization fills
Put；Specifically, the photoelectrocatalysioxidization oxidization device is made up of the electrocatalysis oxidation apparatus and photocatalytic oxidation device connected.
Described photocatalytic oxidation device and electrocatalysis oxidation apparatus can be well known in the prior art pre- for sewage
The device of processing.Wherein, photochemical catalytic oxidation is, for example, with TiO2For catalyst, H2O2Or ozone is oxidant, in ultraviolet light
The processing of lower progress.Electrocatalytic oxidation is exactly conventional electrocatalytic oxidation, and the anode of its electrolysis system may be selected from Ti/PbO2Sun
Pole, titanium-based analysis chlorine anode and titanium-based analysis oxygen anodes, negative electrode may be selected from Ti materials negative electrode, Cu materials negative electrode and Fe material negative electrodes, current density
In 15-50mAcm-2Between.
In the present invention, an electrocatalytic oxidation of being connected before the photochemical catalytic oxidation, photochemical catalytic oxidation is greatly reduced
Needed for catalyst (such as TiO2) amount, it is only necessary to the 10% of existing dosage is that the effect same with prior art can be achieved, and is solved
Determined the TiO2The problem of secondary pollution brought.
In preferred embodiment of the present invention, the preferred amount of activated carbon of the distribution in different anoxic ponds,
Specifically as previously described.By such mode, the decrement and efficiency of activated carbon are taken into account, in the case of decrement, efficiency is on the contrary
Improve, preferably realize the purpose of the present invention.
In preferred embodiment of the present invention, the preferred distribution coefficient of sewage, specifically as previously described.Pass through
Such design, the service efficiency of activated carbon and sewage is effectively combined, it has been found that in the range of the present invention selects,
The efficiency highest of activated carbon；And the efficient removal of nitrogen can be achieved without additional carbon completely；Moreover, it is achieved that followed without interior
Ring can efficiently remove ammonia nitrogen and total nitrogen, greatly simplify equipment and operating cost.
In the preferred embodiment of the present invention, the preferred distribution coefficient of carbon mud, specifically as previously described.Pass through
Such design, the service efficiency of activated carbon and carbon mud is effectively combined, it has been found that in the range of the present invention selects,
It is the efficient removal that nitrogen can be achieved without additional carbon completely；Moreover, it is achieved that without interior circulation can efficiently remove ammonia nitrogen and
Total nitrogen, it greatly simplify equipment and operating cost.Further, by such design, the further of sludge quantity is realized
Reduce, also achieve the efficient reuse efficiency of the carbon mud.
With reference to specific embodiment, the present invention is further elaborated, but the present invention is not limited to following examples.Institute
It is conventional method unless otherwise instructed to state method.The raw material can obtain from open commercial sources unless otherwise instructed.
Embodiment 1
As shown in figure 1, the inventive system comprises the first anoxic pond being connected in parallel and the second anoxic pond, first aerobic
Pond, the 3rd anoxic pond, the second Aerobic Pond, flocculation tank and depositing reservoir.Work has been added in first anoxic pond and the 3rd anoxic pond
Property carbon filling material, dosage is respectively 1.5g/L and 0.5g/L.It is provided with first anoxic pond, the second anoxic pond and the 3rd anoxic pond
Agitating device.Aerator is provided with first Aerobic Pond and the second Aerobic Pond.In being not provided between each Aerobic Pond and anoxic pond
Circulation.Three strands of sewage point respectively enters the first anoxic pond, the second anoxic pond and the 3rd anoxic pond, distribution coefficient n (1)：n(2)：n
(3)=7:2:0.2:0.8.The volume ratio of first Aerobic Pond and the first anoxic pond is 2:1, the first Aerobic Pond and the second anoxic pond
Volume ratio is 2:1, the volume ratio of the second Aerobic Pond and the 3rd anoxic pond is 1:1.Remaining biological carbon mud points three strands respectively enters the
One anoxic pond, the second anoxic pond and the 3rd anoxic pond, distribution coefficient m (1)：m(2)：M (3)=7:2:0.2:0.8.
Embodiment 2
As shown in Fig. 2 the inventive system comprises the first anoxic pond, the first Aerobic Pond being connected in parallel and second are aerobic
Pond, the second anoxic pond, the 3rd Aerobic Pond, flocculation tank and depositing reservoir.Work has been added in first anoxic pond and the second anoxic pond
Property carbon filling material, dosage is respectively 0.7g/L and 0.3g/L.Agitating device is provided with first anoxic pond and the second anoxic pond.The
Aerator is provided with one Aerobic Pond, the second Aerobic Pond and the 3rd Aerobic Pond.In being not provided between each Aerobic Pond and anoxic pond
Circulation.Sewage is divided to two strands to respectively enter the first anoxic pond and the second anoxic pond, distribution coefficient n1:N2=8:2.First Aerobic Pond with
The volume ratio of first anoxic pond is 1:1, the volume ratio of the second Aerobic Pond and the first anoxic pond is 1:1, the 3rd Aerobic Pond and second
The volume ratio of anoxic pond is 2:1.Remaining biological carbon mud is divided to two strands to respectively enter the first anoxic pond and the second anoxic pond, distribution coefficient
m(1)：M (2)=8:2.
Embodiment 3-4
A pretreatment unit, that is, the electrocatalytic oxidation connected and photocatalysis are added before above-described embodiment 1-2
Oxidation unit, the anode in the electrolysis system of the electrocatalytic oxidation is Ti/PbO2Anode, negative electrode are Ti materials negative electrode, electric current is close
Spend for 20mAcm-2；The photochemical catalytic oxidation is with TiO2For catalyst, H2O2Carried out for oxidant, under ultraviolet light,
Wherein TiO2Dosage can be reduced to the 10% of existing known dosage.
Comparative example 1
Traditional Powdered Activated Carbon processing unit, including anoxic pond, Aerobic Pond, flocculation tank and depositing reservoir, active carbon filler
Addition be 9g/L.
Comparative example 2
Traditional Powdered Activated Carbon processing-WAO devices, including anoxic pond, Aerobic Pond, flocculation tank and depositing reservoir, and WAO
System, the addition of active carbon filler is 8g/L.
Comparative example 3
Photocatalytic oxidation device, traditional Powdered Activated Carbon processing-WAO devices, including anoxic pond, Aerobic Pond, flocculation tank
And depositing reservoir, and WAO systems, the addition of active carbon filler is 8g/L.
Carry out a kind of place of coking chemical waste water (its water quality is shown in Table 1) respectively using comparative example 1-3 and embodiment 1-4 device
Reason, the results are shown in Table 2 for it.
The water quality of the coking chemical waste water of table 1
| CODAlways(mg/L) | 300-600 | Ammonia nitrogen (mg/L) | 33-55 |
| Total nitrogen (mg/L) | 40-65 | SS(mg/L) | 100-500 |
| Total phosphorus (mg/L) | 1.7-4.2 | pH | 6.5-7.5 |
Table 2
| Activated carbon dosage | (ton is dirty for sludge quantity | Total nitrogen (mg/L) | Ammonia nitrogen (mg/L) |
| (g/L) | Mud/ten thousand ton water) | |||
| Embodiment 1 | 1.5+0.5 | 10 | 11.5 | 5.6 |
| Embodiment 2 | 0.7+0.3 | 9 | 12.5 | 5.7 |
| Embodiment 3 | 1.5+0.5 | 10 | 10 | 4.9 |
| Embodiment 4 | 0.7+0.3 | 9 | 11 | 5.1 |
| Comparative example 1 | 9 | 12.5 | 15 | 6.0 |
| Comparative example 2 | 8 | 12 | 15 | 6.3 |
| Comparative example 3 | 8 | 12 | 13 | 6.0 |
Carry out a kind of municipal sewage respectively using comparative example 1-3 and embodiment 1-4 device (its water quality is listed in Table 3 below)
Processing, the results are shown in Table 4 for it.
The water quality of the municipal sewage of table 3
| 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 4
It should be noted that above-described embodiment is used only to the technical characteristic of the explanation present invention, it is not intended to limit this hair
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 (15)
1. a kind of sewage-treatment plant with parallel-connection structure, it is characterised in that described device includes two-stage, three or more level
The anoxic pond and Aerobic Pond of series connection are repeated, and including flocculation tank and depositing reservoir；
Wherein, there is one-level anoxic pond to be made up of two anoxic ponds in parallel, or have one-level Aerobic Pond in parallel aerobic by two
Pond is formed；
Wherein, the active carbon filler all adds anoxic pond；In the sewage-treatment plant, the active carbon filler it is total
Dosage is 0.5-3g/L；The active carbon filler whole one-level adds, or divides two-stage, three or more level to add；
What if point two-stage added, the dosage in first order anoxic pond accounts for the 50-90% of total dosage, in the anoxic pond of the second level
Dosage account for the 10-50% of total dosage；
What if point three-level added, the dosage in first order anoxic pond accounts for the 40-80% of total dosage, in the anoxic pond of the second level
Dosage account for the 10-30% of total dosage, the dosage in third level anoxic pond accounts for the 10-30% of total dosage；
When two anoxic ponds of parallel connection all add active carbon filler, its addition can be with identical or different, and two in parallel to lack
The active carbon filler dosage ratio in oxygen pond is (3~7)：(7~3)；
The remaining biological carbon mud waste disposal of the depositing reservoir, or concentrated rear reuse, the carbon mud of reuse respectively enter each anoxic
Pond；
Without interior circulation between each Aerobic Pond and anoxic pond of described device.
2. sewage-treatment plant according to claim 1, it is characterised in that：
Series connection is repeated if two-stage, then with a kind of following structures：
(1) first order anoxic pond is made up of two anoxic ponds in parallel；
(2) first order Aerobic Pond is made up of two Aerobic Ponds in parallel；
(3) second level anoxic pond is made up of two anoxic ponds in parallel；
(4) second level Aerobic Pond is made up of two Aerobic Ponds in parallel；
Series connection is repeated if three-level, then with a kind of following structures：
(1) first order anoxic pond is made up of two anoxic ponds in parallel；
(2) first order Aerobic Pond is made up of two Aerobic Ponds in parallel；
(3) second level anoxic pond is made up of two anoxic ponds in parallel；
(4) second level Aerobic Pond is made up of two Aerobic Ponds in parallel；
(5) third level anoxic pond is made up of two anoxic ponds in parallel；
(6) third level Aerobic Pond is made up of two Aerobic Ponds in parallel；
Series connection is repeated if more stages, by that analogy.
3. sewage-treatment plant according to claim 2, it is characterised in that when two anoxic ponds of parallel connection all add activity
During carbon filling material, the active carbon filler dosage ratio of two anoxic ponds in parallel is (4~6)：(6~4).
4. sewage-treatment plant according to claim 3, it is characterised in that when two anoxic ponds of parallel connection all add activity
During carbon filling material, the active carbon filler dosage ratio of two anoxic ponds in parallel is 5：5.
5. the sewage-treatment plant according to any one of claim 2 to 4, it is characterised in that described device also includes one
Individual pretreatment unit, the pretreatment unit are a photoelectrocatalysioxidization oxidization device, and the photoelectrocatalysioxidization oxidization device is by connecting
Electrocatalysis oxidation apparatus and photocatalytic oxidation device composition.
6. sewage-treatment plant according to claim 5, it is characterised in that the first order Aerobic Pond and first order anoxic
The volume ratio in pond is 2:1；
The second level Aerobic Pond and the volume ratio of second level anoxic pond are (2~1):1；
More stages Aerobic Pond and the volume ratio of more stages anoxic pond are (2~1):1.
7. sewage-treatment plant according to claim 6, it is characterised in that the sewage point multiply respectively enters multistage lack
Oxygen pond；
In the distribution coefficient of multiply sewage, the distribution coefficient of first order anoxic pond is represented with n (1), the distribution of second level anoxic pond
Coefficient represents that the distribution coefficient of third level anoxic pond is represented with n (3), distribution coefficient n (x) tables of xth level anoxic pond with n (2)
Show；
If two-stage, n (1)：N (2)=(6~9):(1~4)；If three-level, n (1)：n(2)：N (3)=(6~9):(0.5~
2):(0.5~2)；
Agitating device is provided with each anoxic pond；
Aerator is provided with each Aerobic Pond.
8. sewage-treatment plant according to claim 7, it is characterised in that if two-stage, n (1)：N (2)=(7~8):
(2~3).
9. sewage-treatment plant according to claim 8, it is characterised in that the remaining biological carbon mud of the depositing reservoir is discarded
Disposal.
10. sewage-treatment plant according to claim 8, it is characterised in that the remaining biological carbon mud warp of the depositing reservoir
Reuse after concentration, the carbon mud of reuse respectively enter each anoxic pond.
11. sewage-treatment plant according to claim 10, it is characterised in that be back to the distribution system of the carbon mud of anoxic pond
In number, the distribution coefficient of first order anoxic pond is represented with m (1), and the distribution coefficient of second level anoxic pond is represented with m (2), the third level
The distribution coefficient of anoxic pond represents that the distribution coefficient of xth level anoxic pond is represented with m (x) with m (3)；
If two-stage, m (1)：M (2)=(6~9):(1~4)；
If three-level, m (1)：m(2)：M (3)=(6~9):(0.5~2):(0.5~2)；
The carbon mud of reuse respectively enters Aerobic Ponds at different levels, wherein being back in the distribution coefficient of carbon mud of Aerobic Pond, the first order is good
The distribution coefficient in oxygen pond represents that the distribution coefficient of second level Aerobic Pond is represented with p (2), the distribution of third level Aerobic Pond with p (1)
Coefficient represents that the distribution coefficient of xth level Aerobic Pond is represented with p (x) with p (3)；
If two-stage, p (1)：P (2)=(6~9):(1~4)；
If three-level, p (1)：p(2)：P (3)=(6~9):(0.5~2):(0.5~2).
12. sewage-treatment plant according to claim 11, it is characterised in that if two-stage, m (1)：M (2)=(7~
8):(2~3)；If two-stage, p (1)：P (2)=(7~8):(2~3).
13. the device any one of claim 1 to 12 is used for the processing of coking chemical waste water.
14. the device any one of claim 1 to 12 is used for the purposes of industrial wastewater and municipal sewage treatment.
15. purposes according to claim 14, wherein the industrial wastewater be oil refining, it is petrochemical industry, dyeing waste water, organic
Wastewater from chemical industry.
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| CN104671596A (en) | 2015-06-03 |
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