CN203904071U - Sewage biological reaction system - Google Patents
Sewage biological reaction system Download PDFInfo
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- CN203904071U CN203904071U CN201420275891.7U CN201420275891U CN203904071U CN 203904071 U CN203904071 U CN 203904071U CN 201420275891 U CN201420275891 U CN 201420275891U CN 203904071 U CN203904071 U CN 203904071U
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- active sludge
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Abstract
The utility model discloses a sewage biological reaction system, which includes a sewage biological reaction tank, wherein an activated sludge anoxic zone, an activated sludge anoxic/anaerobic zone and an anoxic/aerobiotic transition zone are sequentially communicated; an MBBR treatment zone is communicated with an activated sludge aerobic zone through penetration holes in the bottom of a partition, and is communicated with a pure activated sludge aerobic zone through a water discharge screen; the anoxic/aerobiotic transition zone is communicated with the activated sludge aerobic zone; the pure activated sludge aerobic zone is communicated with the activated sludge anoxic zone through an internal reflux submersible sewage pump; the pure activated sludge aerobic zone is communicated with a secondary sedimentation tank through a pipeline; the secondary sedimentation tank is communicated with the activated sludge anoxic zone through a return pipeline. According to the utility model, the conventional CAST/CASS biological tank is reconstructed, under the premise of reducing the reconstruction cost, the capability of removing total nitrogen (TN) and total phosphorus (TP) organisms inside the tank is effectively improved, and the processing capability of pollution load (capacity expansion) and sewage treatment efficiency are enhanced.
Description
Technical field
The utility model relates to sewage treatment area, relates in particular to the saprobia reactive system of a kind of MBBR of application technique and newly-built second pond upgrade expanding CAST/CASS biological tank.
Background technology
CAST/CASS technique is a kind of improvement technique of traditional SBR technique, general CAST/CASS reaction tank is divided into biological selecting area and main reaction region, when application changes class technique, Yi Ge sewage work has two groups of CAST/CASS biological reaction tanks at least, as shown in Figure 1, but most of factory is the pond of building four sets in parallel operation.
The biological selecting area of CAST/CASS biological reaction tank is a zonule that is positioned at reaction tank front portion, generally establishes mechanical stirring device, conventionally under hypoxic/anaerobic condition, moves.First the sewage that enters reaction tank fully mix and contact with the returned sluge from main reaction region at this, by biological respinse, remove fast solvability easily biodegradable organics wherein and suppress hyphomycetic growth, thereby the Growth and reproduction that has suppressed filamentous bacterium, has avoided the generation of sludge bulking; In addition, when biological selector is during in anaerobic environment, a small amount of nitrate nitrogen that returned sluge exists can obtain denitrification, and denitrification amount can reach 20% left and right of the nitrated amount of whole system; When selector switch during in anaerobic environment phosphorus effectively discharged, for biological phosphate-eliminating is prepared.
The main reaction region of CAST/CASS biological reaction tank is the main region of carrying out biological degradation and mud-water separation, under the complete hybrid reaction condition of variable volume, moves, and completes organic degraded in aeration process.This technique aeration and non-aeration hocket, thereby make muddy water mixed solution pass through main reaction region, order is through anaerobic-aerobic-anaerobic environment, especially in non aerated phases 0.5 hour-1.0 hours sludge blanket with born of the same parents in, the carbon that stores under bioselection high loading or absorb is that carbon source is carried out denitrification, also has certain denitrification in sludge settling process; Concentration by controlling dissolved oxygen simultaneously while moving slowly rises to from 0 the periphery that 2.5mg/L makes active sludge flco and keeps an aerobic environment to carry out aerobic nitrification, but then because the transmission of oxygen in active sludge flco is restricted, the nitrate that causes having higher concentration gradient can be penetrated into preferably flco inside and effectively carry out synchronous denitrification, thus synchronously carrying out of having guaranteed that nitrated, denitrification in whole service pond and phosphorus absorbs.The supernatant liquor of last mud-water separation is discharged outside pond by the water device of straining of main reaction region end.
Raising along with the increase of urban population, socioeconomic development and effluent-disposal standard, the subject matter that existing domestic many sewage works face is that effluent index raising or amount of inlet water, load surpass Designing Sewage Treatment Plant ability, causes a large amount of cities and industrial sewage treatment system to need upgrading and dilatation.
Sewage work's upgrading of CAST/CASS technique and the maximum difficult point of dilatation are the removals of total nitrogen, because biological nitration reaction temperature influence is larger; Below 46% of (20 ℃) when the specific growth rate of nitrifier is reduced to normal temperature when water temperature is 12 ℃ in the winter time in generalized case; And denitrification rate below 54% of (20 ℃) while being even reduced to normal temperature.Prolongation aerobic zone hydraulic detention time, raising sludge concentration, prolongation mud can improve nitrification effect age to a certain extent; Wherein extend residence time effect better, but be often limited to the impact that present situation CAST/CASS biochemistry pool pond holds, under conditions permit, upgrading can again be appraised and decided treatment scale, set up new second pond, or by the meticulous control to CAST/CASS process environments parameter, improve sludge concentration, increase microbial reaction speed and improve system nitric efficiency.The major way that actual dilatation and upgrading enhanced biological are processed has: 1. increase quantity and the activity of the interior effective microbe of system, in increase system, the quantity of work microorganism mainly realizes by adding biofilm carrier raising sludge concentration in biochemical section; Improving system works microbic activity mainly refers to by setting up anoxia stirring district, the activity that improves nitrifier, denitrifying bacteria reaches effective removal of ammonia nitrogen and TN, but under the certain prerequisite for the treatment of pond volume, be difficult to improve sewage load, and increased cost of sewage disposal.2. the operational use time that increases microorganism in system, it mainly refers to the adjust operation cycle, improves utilization rate of tank volume, but need to consume a large amount of time, has reduced sewage treating efficiency.
Utility model content
In view of above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide the saprobia reactive system of a kind of MBBR of application technique and newly-built second pond upgrade expanding CAST/CASS biological tank.
For solving the problems of the technologies described above, the utility model scheme comprises:
A kind of saprobia reactive system of applying MBBR technique and newly-built second pond upgrade expanding CAST/CASS biological tank, its bag saprobia reaction tank, wherein, in saprobia reaction tank, a side right-to-left is furnished with active sludge oxygen-starved area, active sludge hypoxic/anaerobic district and anoxic/aerobic zone of transition, active sludge oxygen-starved area, active sludge hypoxic/anaerobic district is communicated with successively with anoxic/aerobic zone of transition, in saprobia reaction tank, opposite side right-to-left is furnished with simple active sludge aerobic district, MBBR treatment zone and active sludge aerobic district, MBBR treatment zone is connected by the perforation of partition wall bottom with active sludge aerobic district, MBBR treatment zone is connected with simple active sludge aerobic district by water outlet screen cloth, anoxic/aerobic zone of transition is connected with active sludge aerobic district, and simple active sludge aerobic district is connected with active sludge oxygen-starved area by internal reflux submersible sewage pump, simple active sludge aerobic district is connected with second pond by a pipeline, and second pond is connected with active sludge oxygen-starved area by a return line.
Described saprobia reactive system, wherein, is provided with in above-mentioned active sludge hypoxic/anaerobic district and increases Float cylinder type stirrer or vertical circular flow agitator.
Described saprobia reactive system, wherein, accesses an excess sludge escape route on above-mentioned return line.
The utility model provides the saprobia reactive system of a kind of MBBR of application technique and newly-built second pond upgrade expanding CAST/CASS biological tank, existing CAST/CASS biological tank is reequiped, reducing under the prerequisite of repacking cost, effectively strengthen total nitrogen (TN) in pond, the processing power of total phosphorus (TP) biological removal ability and raising pollution load (dilatation), newly-increased building on the basis of second pond after CAST/CASS biological tank, by adding MBBR technique biologic packing material within it, MBBR technique " is inlayed " in existing CAST/CASS biological tank, give full play to MBBR technique biological film suspend filler and strengthen nitrated advantage, reach the upgrading of effluent index under former scale sewage pollution lifting capacity, can increase again the biological treatment ability of existing biological tank, can reach the more than 2 times of original CAST/CASS pond processing power, thereby the operation scheme in whole saprobia reactive system can be adjusted into flexibly with conventional A
2o/ inversion A
2the mud membrane compound technology of the MBBR-active sludge of O feature, and two MBBR ponds can the highest filling account for the suspended biological filler that pond holds volume 2/3, have further improved sewage treating efficiency.
Accompanying drawing explanation
Fig. 1 is the two dimensional structure schematic diagram of CAST/CASS biological tank in prior art;
Fig. 2 is the two dimensional structure schematic diagram of saprobia reactive system in the utility model.
Embodiment
The utility model provides the saprobia reactive system of a kind of MBBR of application technique and newly-built second pond upgrade expanding CAST/CASS biological tank, for making the purpose of this utility model, technical scheme and effect clearer, clear and definite, below the utility model is further described.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
The utility model provides the saprobia reactive system of a kind of MBBR of application technique and newly-built second pond upgrade expanding CAST/CASS biological tank, as shown in Figure 2, its bag saprobia reaction tank, saprobia reaction tank is generally that every two groups of CAST/CASS ponds in prior art are changed into by the treating pond of AAO-MBBR mud membrane compound technology, if (originally had four groups of CAST/CASS ponds, can change 2 AAO-MBBR mud membrane compound technology treating ponds in parallel into), wherein, in saprobia reaction tank, a side right-to-left is furnished with active sludge oxygen-starved area 1, active sludge hypoxic/anaerobic district 2 and anoxic/aerobic zone of transition 3, active sludge oxygen-starved area 1, active sludge hypoxic/anaerobic district 2 is communicated with successively with anoxic/aerobic zone of transition 3, in saprobia reaction tank, opposite side right-to-left is furnished with simple active sludge aerobic district 7, MBBR treatment zone 5 and active sludge aerobic district 4, MBBR treatment zone 5 is connected by the perforation of partition wall bottom with active sludge aerobic district 4, MBBR treatment zone 5 is connected with simple active sludge aerobic district 7 by water outlet screen cloth 8, anoxic/aerobic zone of transition 3 is connected with active sludge aerobic district 4, and simple active sludge aerobic district 7 is connected with active sludge oxygen-starved area 1 by internal reflux submersible sewage pump 6, simple active sludge aerobic district 7 is connected with second pond 9 by a pipeline, and second pond 9 is connected with active sludge oxygen-starved area 1 by a return line 10.
Further, above-mentioned active sludge hypoxic/anaerobic district 2 is provided with increase Float cylinder type stirrer, vertical circular flow agitator or other the easy-to-install stirring systems that the time is short, working cost is low and can avoid the body perforate of existing concrete pond to destroy, to guarantee anoxic denitrification removal TN and anaerobism dephosphorization.And on above-mentioned return line 10, access an excess sludge escape route 11, for discharging excess sludge.
The utility model also provides the upgrade expanding method of applying above-mentioned saprobia reactive system, and it comprises the following steps:
Sewage enters and after process active sludge oxygen-starved area 1, enters active sludge hypoxic/anaerobic district 2 and process, after it is disposed, by anoxic/aerobic zone of transition 3, enter active sludge aerobic district 4 and process, after it is disposed, enter after process MBBR treatment zone 5 and enter simple active sludge aerobic district 7 again, the sewage of processing through simple active sludge aerobic district 7 enters active sludge oxygen-starved area 1 by internal reflux submersible sewage pump 6 and carries out circular treatment.
And until sewage, after circular treatment reaches requirement, it is finally entered after second pond 9 is processed and is discharged by simple active sludge aerobic district 7, and wherein the interior part muddy water mixed solution of second pond 8 is back to active sludge oxygen-starved area by return line 10.
In order further to describe the utility model, below enumerate more detailed embodiment and describe.
By every two groups, replace parallel running CAST/CASS pond and change AAO-MBBR mud film mixed biologic treating pond into: 1) the wherein one group of pond in every 2 groups of CAST/CASS ponds is mainly reconstructed as oxygen-starved area 1, hypoxic/anaerobic district 2, anoxic/aerobic transition zone 3, first sewage flow into active sludge oxygen-starved area 1 (the bioselection pond in former one group of CAST pond); 2) and then flow through hypoxic/anaerobic district 2 (inversion A AO technique, part main reaction region reconstruction by one group of CAST pond wherein forms), in hypoxic/anaerobic district 2, the interior settling time is short, working cost is low and increase Float cylinder type stirrer, vertical circular flow agitator or other the easy-to-install stirring systems that can avoid the body perforate of existing concrete pond to destroy; 3) the active muddy water mixed solution of the 3rd step flows to anoxic/aerobic zone of transition 3 (the part main reaction region reconstruction by its one group of CAST pond, Central Plains forms), and agitator and micro-pore aeration system are installed in it; 4) the 4th step is that active muddy water mixed solution flows to active sludge aerobic district 4 (being formed by the part main reaction region reconstruction in another group CAST pond wherein), is provided with micro-pore aeration system in it; 5) the 5th step is that active muddy water mixed solution flows to MBBR treatment zone 5 (being formed by the part main reaction region reconstruction in another group CAST pond wherein), special-purpose perforated pipe aerating regulation system is installed in it, give full play to MBBR technique biological film suspend filler and strengthen nitrated advantage, the biological tank processing power of ammonia nitrogen, TN or extending capacity reformation is removed in the upgrading of enhanced system; 6) muddy water mixed solution in MBBR treatment zone 5 enters the simple active sludge aerobic district 7 (being formed by biological selecting area reconstruction in another group CAST pond wherein) of rearmounted low DO through the water outlet screen cloth 8 that can tackle MBBR technique floating stuffing, and traditional micro-pore aeration system and internal reflux submersible sewage pump system 6 are installed in it; 7) water outlet of improved saprobia reactive system finally flows into newly-built second pond 9 below, and the part muddy water mixed solution that needs of not removing TN is back to oxygen-starved area 1.Reducing under the prerequisite of repacking cost, effectively strengthening the processing power of total nitrogen in pond (TN), total phosphorus (TP) biological removal ability and raising pollution load (dilatation).
With certain existing sewage work, adopt CAST technique, existing treatment scale is 30000 ton per days, and effluent quality is 1B standard.Customer requirement is upgraded to 1A standard in the situation Xia Jianggai sewage work that does not increase biological tank, and dilatation is to 60000 ton per day treatment scales.Biological treatment section adopts AAO-MBBR (being formed by the transformation of former CAST pond) technique.Biological tank process design parameter after this project reconstruction is as follows:
Illustrate: change the existing biological tank of Sewage Plant and hold under constant prerequisite, even if biological tank influent load is doubled, adopt MBBR-A/A/O reforming technology, can realize biological section water outlet total nitrogen, ammonia nitrogen, the basicly stable one-level A emission standard that reaches of total phosphorus, by simple mode, solved complicated engineering problem, reached that reduced investment, duration are short, the object of instant effect.
Certainly; more than explanation is only preferred embodiment of the present utility model; the utility model is not limited to enumerate above-described embodiment; should be noted that; any those of ordinary skill in the art are under the instruction of this specification sheets; that makes is allly equal to alternative, obvious form of distortion, within all dropping on the essential scope of this specification sheets, ought to be subject to protection of the present utility model.
Claims (3)
1. a saprobia reactive system of applying MBBR technique and newly-built second pond upgrade expanding CAST/CASS biological tank, its bag saprobia reaction tank, it is characterized in that, in saprobia reaction tank, a side right-to-left is furnished with active sludge oxygen-starved area, active sludge hypoxic/anaerobic district and anoxic/aerobic zone of transition, active sludge oxygen-starved area, active sludge hypoxic/anaerobic district is communicated with successively with anoxic/aerobic zone of transition, in saprobia reaction tank, opposite side right-to-left is furnished with simple active sludge aerobic district, MBBR treatment zone and active sludge aerobic district, MBBR treatment zone is connected by the perforation of partition wall bottom with active sludge aerobic district, MBBR treatment zone is connected with simple active sludge aerobic district by water outlet screen cloth, anoxic/aerobic zone of transition is connected with active sludge aerobic district, and simple active sludge aerobic district is connected with active sludge oxygen-starved area by internal reflux submersible sewage pump, simple active sludge aerobic district is connected with second pond by a pipeline, and second pond is connected with active sludge oxygen-starved area by a return line.
2. saprobia reactive system according to claim 1, is characterized in that, is provided with and increases Float cylinder type stirrer or vertical circular flow agitator in above-mentioned active sludge hypoxic/anaerobic district.
3. saprobia reactive system according to claim 1, is characterized in that, accesses an excess sludge escape route on above-mentioned return line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420275891.7U CN203904071U (en) | 2014-05-27 | 2014-05-27 | Sewage biological reaction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420275891.7U CN203904071U (en) | 2014-05-27 | 2014-05-27 | Sewage biological reaction system |
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| CN203904071U true CN203904071U (en) | 2014-10-29 |
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| CN201420275891.7U Withdrawn - After Issue CN203904071U (en) | 2014-05-27 | 2014-05-27 | Sewage biological reaction system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103991959A (en) * | 2014-05-27 | 2014-08-20 | 青岛思普润水处理有限公司 | Biological sewage reaction system and upgrading and expanding method |
| CN107585864A (en) * | 2017-11-01 | 2018-01-16 | 济宁市孚源环保科技有限公司 | A kind of mud film combined sewage deep treatment method |
-
2014
- 2014-05-27 CN CN201420275891.7U patent/CN203904071U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103991959A (en) * | 2014-05-27 | 2014-08-20 | 青岛思普润水处理有限公司 | Biological sewage reaction system and upgrading and expanding method |
| CN103991959B (en) * | 2014-05-27 | 2015-08-12 | 青岛思普润水处理股份有限公司 | A kind of saprobia reactive system and upgrade expanding method |
| CN107585864A (en) * | 2017-11-01 | 2018-01-16 | 济宁市孚源环保科技有限公司 | A kind of mud film combined sewage deep treatment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: QINGDAO SPRING WATER-TREATMENT CO., LTD. Free format text: FORMER NAME: QINGDAO SPRING WATER-TREATMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 266555 Shandong, Qingdao economic and Technological Development Zone, Changjiang Road, No. 230 China World Trade Center center A2912 Patentee after: Qingdao Si Purun water treatment limited-liability company Address before: 266555 Shandong, Qingdao economic and Technological Development Zone, Changjiang Road, No. 230 China World Trade Center center A2912 Patentee before: Qingdao Spring Water Treatment Co., Ltd. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141029 Effective date of abandoning: 20190710 |