CN204588916U - The waste disposal plant of a kind of efficient Powdered Activated Carbon biological treatment total nitrogen and ammonia nitrogen - Google Patents
The waste disposal plant of a kind of efficient Powdered Activated Carbon biological treatment total nitrogen and ammonia nitrogen Download PDFInfo
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- CN204588916U CN204588916U CN201520061823.5U CN201520061823U CN204588916U CN 204588916 U CN204588916 U CN 204588916U CN 201520061823 U CN201520061823 U CN 201520061823U CN 204588916 U CN204588916 U CN 204588916U
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Abstract
The utility model relates to the waste disposal plant of a kind of efficient Powdered Activated Carbon biological treatment total nitrogen and ammonia nitrogen, it comprises the multistage anoxic pond and the Aerobic Pond that repeat series connection, comprise the flocculation tank and settling pond that are connected with last step Aerobic Pond further, wherein, at least in the first anoxic pond, add active carbon filler, described sewage is dispensed into each anoxic pond by organic carbon source demand percentage, the residue biological carbon mud waste disposal of described settling pond.Utilize the structure that the utility model designs, maximum 50% (even can be only 10%) that gac injected volume is only former injected volume can realize the high-efficient purification of sewage, have effectively saved the usage quantity of gac.In addition, without the need to additionally adding organic carbon source, without the need to internal recycle, the efficient removal of nitrogen in simple realization sewage.
Description
Technical field
The utility model relates to sewage treatment area, particularly relates to the waste disposal plant of a kind of efficient Powdered Activated Carbon biological treatment total nitrogen and ammonia nitrogen.
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.
The defect of existing Powdered Activated Carbon bioremediation is: the nitrate nitrogen that (1) aerobic nitrification pond produces must be taken back anoxic denitrification tank by internal recycle and carry out denitrogenation, and denitrogenation need consume organic carbon source.(2) nitrate recirculation ratio determines the nitrate nitrogen ratio taking back anoxic denitrification tank, just needs very high nitrate recirculation ratio during total nitrogen concentration height, and high nitrate recirculation ratio not only energy consumption is large, and internal recycle liquid takes back the usefulness that a large amount of dissolved oxygen can reduce again anoxic denitrification tank simultaneously.(3) just cannot be up to standard when total nitrogen emission request is tight.
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 purpose of this utility model is to overcome deficiency of the prior art, the waste disposal plant of a kind of efficient Powdered Activated Carbon biological treatment total nitrogen and ammonia nitrogen is provided, described device retains one-level anoxic pond and to connect with Aerobic Pond the characteristic that (A-O) can utilize influent COD to be organic carbon source, but the shortcoming of the very high nitrate recirculation ratio of total nitrogen concentration Gao Shixu is improved, defect that just cannot be up to standard when also solution total nitrogen emission request is tight simultaneously.This device suitability is strong, simple and easy and efficient, is suitable for industrialization.
The utility model is achieved through the following technical solutions:
The waste disposal plant (" CBR of a kind of efficient Powdered Activated Carbon biological treatment total nitrogen and ammonia nitrogen
s-R "); it comprises the multistage anoxic pond (A) repeating to connect and Aerobic Pond (O); comprise the flocculation tank and settling pond that are connected with last step Aerobic Pond further; wherein; at least in the first anoxic pond, add active carbon filler; described sewage is dispensed into each anoxic pond by organic carbon source demand percentage, the residue biological carbon mud waste disposal of described settling pond.
According to the utility model, in described waste disposal plant, total dosage of active carbon filler is 0.5-3g/L.
According to the utility model, comprise two-stage, three grades or the anoxic pond (A) and the Aerobic Pond (O) that repeat more than three grades to connect.
Wherein, Aerobic Pond in a first stage and anoxic pond are designated as the first Aerobic Pond, the first anoxic pond respectively, and the Aerobic Pond in the second stage and anoxic pond are designated as the second Aerobic Pond, the second anoxic pond respectively, by that analogy.
According to the utility model, if two-stage repeats series connection, in described second anoxic pond, also add active carbon filler; If three grades repeat connect, also add active carbon filler in second, third anoxic pond described; By that analogy.
According to the utility model, described active carbon filler all adds anoxic pond.
According to the utility model, 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 utility model, 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 utility model, 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 utility model, 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 utility model, the volume ratio of described first Aerobic Pond and the first anoxic pond is about 2:1.
According to the utility model, the volume ratio of described second Aerobic Pond and the second anoxic pond is (2 ~ 1): 1.
According to the utility model, 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 utility model, 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 utility model, 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 utility model, in described anoxic pond at different levels, be provided with whipping appts.
According to the utility model, in described Aerobic Pond at different levels, be provided with aerating apparatus.
According to the utility model, without the need to internal recycle between each Aerobic Pond of described device and anoxic pond.
According to the utility model, organic carbon source can be supplemented as required in posterior anoxic pond (when repeating series connection as secondary, in the second anoxic pond).
Device of the present utility model 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 beneficial effects of the utility model are:
1, the structure utilizing the utility model 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.
4, utilize structure of the present utility model, the nitrate nitrogen that Aerobic Pond at different levels produces is immediately in follow-up anoxic pond denitrogenation processing, and high total nitrogen concentration sewage does not need to improve nitrate recirculation ratio, even can cancel internal recycle.In addition, because nitrate nitrogen is effectively handled, still can be up to standard when total nitrogen emission request is tight.
Accompanying drawing explanation
Fig. 1 is the structural representation of the waste disposal plant of the present utility model in embodiment 1
Fig. 2 is the structural representation of the waste disposal plant of the present utility model in embodiment 2
Fig. 3 is the structural representation of the waste disposal plant of the present utility model in embodiment 3
Embodiment
As mentioned above, the utility model discloses the waste disposal plant (" CBR of a kind of efficient gac biological treatment total nitrogen and ammonia nitrogen
s-R ").Compared with existing powdered activated carbon treatment process, the dosage of the active carbon filler in the utility model device 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 powdered activated carbon treatment process.
Specifically, in the utility model ingenious by improve after traditional activated sludge process and Powdered Activated Carbon facture combine, namely achieve effective minimizing of described active carbon filler, effectively control sludge quantity again, and denitrogenate efficiency and do not reduce and even slightly improve.Visible, the utility model, by a simple structure design, solves problem efficiently, and adaptability is wide again, is easy to industrialization.
Of the present utility model one preferred embodiment in, preferably be distributed in the amount of the gac in two anoxic pond, 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 the purpose of this utility model.
Of the present utility model one preferred embodiment in, the preferred partition ratio of sewage, specifically, repeat to connect for two-stage, 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 utility model is selected, 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 utility model is further elaborated, but the utility model 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, device of the present utility model 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, device of the present utility model 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, device of the present utility model 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
| Gac dosage (g/L) | Sludge quantity | Total nitrogen (mg/L) | Ammonia nitrogen (mg/L) | |
| Embodiment 1 | 1.8+0.2 | 10 | 11.5 | 5.8 |
| Embodiment 2 | 0.6+0.4 | 9 | 12.5 | 5.5 |
| Embodiment 3 | 1.5 | 9.5 | 11 | 5.7 |
| Comparative example 1 | 9 | 12.5 | 17 | 6.9 |
| Comparative example 2 | 8 | 12 | 16 | 6.4 |
It should be noted that, above-described embodiment is only used to technical characteristic of the present utility model is described, is not used to limit the claimed scope of the utility model.With the technical scheme same principle of the utility model content part, still belong to the category that the utility model is claimed.
Claims (7)
1. the waste disposal plant of a Powdered Activated Carbon biological treatment total nitrogen and ammonia nitrogen, it is characterized in that, described device comprises the multistage anoxic pond and the Aerobic Pond that repeat series connection, comprise the flocculation tank and settling pond that are connected with last step Aerobic Pond further, wherein, at least in the first anoxic pond, add active carbon filler, described sewage is dispensed into each anoxic pond by organic carbon source demand percentage, the residue biological carbon mud waste disposal of described settling pond.
2. waste disposal plant according to claim 1, is characterized in that, described device comprise two-stage, three grades or repeat more than three grades connect anoxic pond and Aerobic Pond.
3. waste disposal plant according to claim 2, it is characterized in that, Aerobic Pond in a first stage and anoxic pond are designated as the first Aerobic Pond, the first anoxic pond respectively, Aerobic Pond in the second stage and anoxic pond are designated as the second Aerobic Pond, the second anoxic pond respectively, and the volume ratio of described first Aerobic Pond and the first anoxic pond is about 2:1; The volume ratio of described second Aerobic Pond and the second anoxic pond is (2 ~ 1): 1.
4. waste disposal plant according to claim 3, is characterized in that, described device comprises anoxic pond and the Aerobic Pond that two-stage repeats series connection, and 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).
5. waste disposal plant according to claim 4, is characterized in that, if only add gac in the first anoxic pond, then n1:n2 is (7 ~ 8): (2 ~ 3); If all thrown in gac in the first and second anoxic pond, then n1:n2=(6 ~ 8): (2 ~ 4).
6. waste disposal plant according to claim 1, is characterized in that, is provided with whipping appts in described anoxic pond at different levels.
7. waste disposal plant according to claim 1, is characterized in that, is provided with aerating apparatus in described Aerobic Pond at different levels.
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