CN104591501A - Powdered activated carbon sewage treatment device including membrane bioreactor - Google Patents
Powdered activated carbon sewage treatment device including membrane bioreactor Download PDFInfo
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Abstract
The invention relates to a powdered activated carbon sewage treatment device. The powdered activated carbon sewage treatment device comprises a first anoxic tank, a first aerobiotic tank, a second anoxic tank, a second aerobiotic tank, a flocculation cell and an MBR (membrane bioreactor) membrane tank, wherein the pH of the MBR membrane tank is controlled at 5.0-6.8. The invention further relates to an application of the powdered activated carbon sewage treatment device in waste water treatment.
Description
Technical field
The present invention relates to sewage treatment area, be specifically related to the Powdered Activated Carbon waste disposal plant and the sewage water treatment method thereof that comprise membrane bioreactor.
Background technology
In recent years, along with improving constantly of urban development and industrialization degree, municipal effluent and the influence degree of industrial sewage to environment increasing., the improvement of municipal effluent and industrial sewage treatment technology is paid close attention to widely for this reason, also increasingly strict to the emission standard of these sewage.
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 municipal effluent and trade effluent as the process of strong brine, radioactive pollutant waste water, petroleum hydrocarbons waste water etc.
Disclose a kind for the treatment of process of dyeing waste water in China publication CN101445311A, comprise acidication-Powdered Activated Carbon process biological reinforced-combination process of coagulation and filtration.Disclose a kind for the treatment of process of dyeing and printing sewage in China publication CN102659280A, it is by acidication, Powdered Activated Carbon process and flocculation process combined treatment sewage.Disclose a kind of powdered activated carbon treatment process of improvement in China publication CN103086503A, its by a kind of gac-microbial bacteria micelle for the treatment of sewage.
In addition, external also once proposition wet oxidation process system (Powdered Activated Carbon process-WAO), it is 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, by the novel process that WAO flow process is combined with Powdered Activated Carbon facture.
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.
Membrane bioreactor (MBR) is a kind of new type water treatment technology combined with biological processing unit by film separation unit.Wherein film is of a great variety, comprising: reaction film, ion-exchange membrane, permeable membrane, natural membranes and synthesis film etc.But MBR installation cost is higher, and limited to the dissolubility pollutant removal ability of difficult degradation, easily produce the situations such as aging, blocking, it still needs further improvement in the application that sewage disposal is industrial in addition.
Summary of the invention
The object of this invention is to provide the improved Powdered Activated Carbon waste disposal plant of a kind of performance.This object is achieved through the following technical solutions:
A kind of Powdered Activated Carbon waste disposal plant, it comprises the first anoxic pond, the first Aerobic Pond, the second anoxic pond, the second Aerobic Pond, flocculation tank and MBR membrane cisterna, wherein, the pH of described MBR membrane cisterna controls to be 5.0 to 6.8, 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
Film in described MBR membrane cisterna can be the one in microfiltration membrane, nanofiltration membrane, ultra-filtration membrane.
According to the present invention, the membrane module material in described MBR membrane cisterna can be polyvinylidene difluoride (PVDF), Mierocrystalline cellulose or polysulfones.
The pH of described MBR membrane cisterna can control by adding organic acid, mineral acid or its mixture.
According to the present invention, the pH value of MBR membrane cisterna can be 5.0 to 6.8, such as 5.5 to 6.5 or 5.5 to 6.0.
The present invention can organic acid can be one or more mixture in such as formic acid, acetic acid, propionic acid, oxalic acid, propanedioic acid, 1, 4-succinic acid, 1,2-succinic acid, 1,3-succinic acid, 1,5-pentanedioic acid, citric acid; Mineral acid can be one or more the mixture in hydrochloric acid, sulfuric acid, nitric acid.
According to the present invention, described MBR membrane cisterna is connected with rising pipe, is also provided with settling pond bottom described membrane cisterna, and this settling pond is connected with described one-level anoxic pond by mud return line, for returned sluge is injected one-level anoxic pond.
According to the present invention, active carbon filler can also be added in described second anoxic pond.
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 a point two-stage adds.Preferably, a described active carbon filler part adds the first anoxic pond, and another part adds the second anoxic pond.
According to the present invention, described active carbon filler all adds the first anoxic pond, and preferably, its dosage is 0.5-3g/L, or 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, described active carbon filler can one-level add, and also can a point two-stage add, and described point of two-stage adds, and 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.Preferably, if classification 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, 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 respectively.
According to the present invention, the volume ratio of described first Aerobic Pond and the first anoxic pond can be about 2:1.
According to the present invention, the volume ratio of described second Aerobic Pond and the second anoxic pond can be (2 ~ 1): 1.
According to the present invention, the volume ratio of described second Aerobic Pond and the second anoxic pond can be (2 ~ 1): 1.
According to the present invention, described sewage can divide two stocks not enter the first anoxic pond and the second anoxic pond.Preferably add outer carbon source.
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, 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 first anoxic pond, the second anoxic pond, be provided with whipping appts.
According to the present invention, in described first Aerobic Pond, the second Aerobic Pond, 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, coking chemical waste water, coal chemical industrial 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, after being combined with MBR technique, system is improved to total nitrogen degradation capability, and water outlet total nitrogen is obviously better than existing technique.Further, further comprises settling region in membrane cisterna, this settling region and film combine the load reducing film, reduce the energy consumption of whole method on the whole.
2, MBR membrane cisterna of the present invention decreases the deposition of active pollution index inside and surface aggregate thing by control ph, reduces membrane resistance, and improves the degradation rate of aldehydes matter, improve the efficiency of Sewage treatment systems.
3, 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.
4, adopt simple means, organically combine traditional activated sludge process and Powdered Activated Carbon facture (being referred to as " CBRS-R "), without the need to additionally adding organic carbon source, without the need to internal recycle, the efficient removal of nitrogen in simple realization sewage.
5, when not needing traditional WAO technique, effective reuse of biological carbon mud and the minimizing (being only 90% of traditional technology) of sludge quantity can also be realized.
Accompanying drawing explanation
The structural representation of the waste disposal plant of Fig. 1 embodiment 1
The structural representation of the waste disposal plant of Fig. 2 embodiment 2
The structural representation of the waste disposal plant of Fig. 3 embodiment 3
The structural representation of the waste disposal plant of Fig. 4 embodiment 4
Embodiment
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 if no special instructions, are and obtain from open commercial sources.
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 polysulfone membrane MBR membrane cisterna.The pH of described MBR membrane cisterna controls to be 6.5 by adding formic acid.Added active carbon filler in described first anoxic pond and the second anoxic pond, dosage is respectively 1.8g/L and 0.2g/L, is provided with whipping appts in the first anoxic pond, the second anoxic pond.Aerating apparatus is provided with in first Aerobic Pond, the second Aerobic Pond.Between each Aerobic Pond and anoxic pond, internal recycle is not set.Described MBR membrane cisterna is connected with rising pipe, is also provided with settling pond bottom described membrane cisterna, and this settling pond is communicated with rising pipe, and is connected with the first anoxic pond by mud return line.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 after the regeneration of biological carbon mud regeneration system rapidly divides two stocks not enter the first anoxic pond and the second anoxic pond, partition ratio m1:m2=6:4.
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 cellulose membrane MBR membrane cisterna.Added active carbon filler in described first anoxic pond, dosage is respectively 3g/L.The pH of described MBR membrane cisterna controls to be 6.0 by adding acetic acid.Whipping appts is provided with in first anoxic pond, the second anoxic pond.Aerating apparatus is provided with in first Aerobic Pond, the second Aerobic Pond.Between each Aerobic Pond and anoxic pond, internal recycle is not set.Described membrane cisterna is connected with rising pipe, and be also provided with settling pond bottom described MBR membrane cisterna, this settling pond is communicated with rising pipe, and is connected with the first anoxic pond by mud return line.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 after the regeneration of biological carbon mud regeneration system rapidly divides two stocks not enter the first Aerobic Pond and the second Aerobic Pond, partition ratio p1:p2=6:4.
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 polyvinylidene fluoride film MBR membrane cisterna.The pH of described MBR membrane cisterna is that the mixture of 1:1 controls to be 5.5 by adding formic acid and acetic acid volume ratio.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, the second anoxic pond.Aerating apparatus is provided with in first Aerobic Pond, the second Aerobic Pond.Between each Aerobic Pond and anoxic pond, internal recycle is not set.Described MBR membrane cisterna is connected with rising pipe, is also provided with settling pond bottom described membrane cisterna, and this settling pond is communicated with rising pipe, and is connected with the first anoxic pond by mud return line.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 after the regeneration of biological carbon mud regeneration system rapidly divides two stocks not enter the first anoxic pond and the second anoxic pond, partition ratio 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, the second Aerobic Pond, flocculation tank and polyvinylidene fluoride film MBR membrane cisterna.The pH of described MBR membrane cisterna controls to be 6.8 by adding propionic acid.Added active carbon filler in described first anoxic pond, dosage is 0.8g/L.Whipping appts is provided with in first anoxic pond, the second anoxic pond.Aerating apparatus is provided with in first Aerobic Pond, the second Aerobic Pond.Between each Aerobic Pond and anoxic pond, internal recycle is not set.Described MBR membrane cisterna is connected with rising pipe, is also provided with settling pond bottom described membrane cisterna, and this settling pond is communicated with rising pipe, and is connected with the first anoxic pond by mud return line.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 after the regeneration of biological carbon mud regeneration system rapidly divides two stocks not enter the first anoxic pond and the second anoxic pond, partition ratio p1:p2=8:2.
Comparative example 1
Powdered Activated Carbon treatment unit, comprises anoxic pond, Aerobic Pond, flocculation tank and Mierocrystalline cellulose MBR membrane cisterna, and wherein the pH of MBR membrane cisterna controls to be 7.0 by adding formic acid.
Comparative example 2
Powdered Activated Carbon treatment unit, comprises anoxic pond, Aerobic Pond, flocculation tank and polyvinylidene difluoride (PVDF) MBR membrane cisterna, and wherein the pH of MBR membrane cisterna controls to be 6.8 by adding acetic acid, and the addition of active carbon filler is 8g/L.
Use the device of embodiment 1-4 and comparative example 1-2 to carry out the process of following municipal effluent respectively, the results are shown in Table 1 for it.
Municipal effluent water quality
| 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 1
Use the device of embodiment 1-4 and comparative example 1-2 to carry out the process of following coal chemical industrial waste water respectively, the results are shown in Table 2 for it.
The water quality of 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 2
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. a Powdered Activated Carbon waste disposal plant, it comprises the first anoxic pond, the first Aerobic Pond, the second anoxic pond, the second Aerobic Pond, flocculation tank and MBR membrane cisterna, wherein, the pH of described MBR membrane cisterna controls to be 5.0 to 6.8, 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.
2. the device of claim 1, the film in wherein said MBR membrane cisterna can be the one in microfiltration membrane, nanofiltration membrane, ultra-filtration membrane.
Preferably, the membrane module material in described MBR membrane cisterna can be polyvinylidene difluoride (PVDF), Mierocrystalline cellulose or polysulfones.
Preferably, the pH value of MBR membrane cisterna can be 5.0 to 6.8, such as 5.5 to 6.5 or 5.5 to 6.0.
3. the device of any one of claim 1-2, the pH of wherein said MBR membrane cisterna controls by adding organic acid, mineral acid or its mixture.
Preferably, described organic acid is selected from one or more the mixture in formic acid, acetic acid, propionic acid, oxalic acid, propanedioic acid, 1, 4-succinic acid, 1,2-succinic acid, 1,3-succinic acid, 1,5-pentanedioic acid, citric acid; Described mineral acid is selected from one or more the mixture in hydrochloric acid, sulfuric acid, nitric acid.
4. the device of any one of claim 1-3, wherein said MBR membrane cisterna is connected with rising pipe, is also provided with settling pond bottom described membrane cisterna, and this settling pond is connected with described one-level anoxic pond by mud return line, for returned sluge is injected one-level anoxic pond.
5. the device of any one of claim 1-4, adds active carbon filler in wherein said second anoxic pond.
Preferably, described active carbon filler all adds anoxic pond.
Preferably, described active carbon filler all adds the first anoxic pond, and preferably, its dosage is 0.5-3g/L, or is 0.6-2.8g/L, more preferably 1-2g/l.Such as 0.8,1.0,1.5,2.0,2.5g/L.
More preferably, the whole one-level of described active carbon filler adds, or a point two-stage adds.Preferably, a described active carbon filler part adds the first anoxic pond, and another part adds the second anoxic pond.Such as, described active carbon filler can one-level add, and also can a point two-stage add.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.Preferably, if classification 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.
6. the device of claim 5, residue biological carbon mud reuse after concentrated of wherein said settling pond.
7. the device of any one of claim 1-6, the carbon mud of wherein said reuse enters the first anoxic pond, the second anoxic pond respectively.
Preferably, the volume ratio of described first Aerobic Pond and the first anoxic pond can be about 2:1.
Preferably, the volume ratio of described second Aerobic Pond and the second anoxic pond can be (2 ~ 1): 1.
More preferably, the volume ratio of described second Aerobic Pond and the second anoxic pond can be (2 ~ 1): 1.
8. the device of any one of claim 1-7, wherein said sewage can divide two stocks not enter the first anoxic pond and the second anoxic pond.Preferably add outer carbon source.
Preferably, in the partition ratio of described two 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, 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).
9. the device of any one of claim 1-8, is provided with whipping appts in wherein said first anoxic pond, the second anoxic pond.Aerating apparatus is provided with in described first Aerobic Pond and/or the second Aerobic Pond.
Preferably, between each Aerobic Pond of described device and anoxic pond without the need to internal recycle.
10. the device of any one of claim 1-9 purposes in the treatment of waste water.
Preferably, described waste water is trade effluent or municipal effluent.Described trade effluent is as the process of oil refining, petrochemical complex, dyeing waste water, coking chemical waste water, coal chemical industrial waste water, organic chemical waste water.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110563281A (en) * | 2019-10-09 | 2019-12-13 | 江苏沃尔特环保有限公司 | Organic wastewater treatment system is used in glass fiber cloth production |
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| CN204588921U (en) * | 2015-01-29 | 2015-08-26 | 北京万邦达环保技术股份有限公司 | A kind of Powdered Activated Carbon waste disposal plant comprising membrane bioreactor |
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| US6881339B1 (en) * | 1997-10-30 | 2005-04-19 | Sud-Chemie Ag | Process for treating industrial and municipal waste water highly loaded with ammonium |
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| CN110563281A (en) * | 2019-10-09 | 2019-12-13 | 江苏沃尔特环保有限公司 | Organic wastewater treatment system is used in glass fiber cloth production |
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