CN105601030A - Cycle sequencing batch operation sewage treatment plant and technology - Google Patents
Cycle sequencing batch operation sewage treatment plant and technology Download PDFInfo
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- CN105601030A CN105601030A CN201510960490.4A CN201510960490A CN105601030A CN 105601030 A CN105601030 A CN 105601030A CN 201510960490 A CN201510960490 A CN 201510960490A CN 105601030 A CN105601030 A CN 105601030A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- Environmental & Geological Engineering (AREA)
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- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a cycle sequencing batch operation sewage treatment plant and technology The core of the invention is that a plurality of SBR pools are arranged in a circle; and the central pool combines functions of water quality and quantity regulation, water distribution, sludge backflow, mixed liquor backflow and biological selection. An individual SBR pool performs different functions in the cycle operation. The sewage treatment plant provided by the invention can be operated in a conventional SBR, or in combination of a plurality of SBR pools. By control of parameters including water inlet, sludge backflow, mixed liquor backflow and dissolved oxygen, the technology can achieve operation of a plurality of processes including A/O, A2/O, inverted A2/O, VIP, CASS and Bardenpho, and reach good simultaneous treatment effects on various water quality and quantity and carbon, nitrogen and phosphorus pollutants in refractory industrial wastewater. The sewage treatment plant has compact structure and a small land occupation; and the technology of the invention has the advantages of low investment, low operation cost and easy operation and maintenance.
Description
Technical field
The present invention relates to a kind of biologic process for treating sewage field, relate in particular to a kind of taking sbr reactor technique asThe circulation order on basis is criticized sewage-treatment plant and the technique (CSBR) of operation.
Technical background
Sbr reactor technique is a kind of conventional activated sludge saprobia treatment process.
Traditional SBR (the active method of batch-type) reaction process by intaking, react, precipitation, draining, idle fiveOperation composition, whole technique is made up of a reaction tank body, and reaction and precipitation operation are all complete in this pond bodyBecome, the treatment effect that carbon source in sewage is polluted is higher, and SBR technique adopts completely quiet at precipitate phase simultaneouslyHeavy intermediate processing, in precipitation process, without any interference, mud-water separation is respond well. But due to SBRThe immediately sequencing batch operation of another operation of an operation in the method for operation of technique, therefore, single reaction tankIntake discontinuous, in engineering, can only adopt multiple reaction tank parallel runnings, therefore pond in order to realize continuous processingBody is numerous. Single reaction tank is not high to the removal effect of nitrogen in sewage and phosphorus simultaneously. In engineering, be mostly applied toTreatment scale is little, to the not high place of nitrogen phosphorus processing requirements in water, limited the application of SBR technique.
In order to realize the requirement of extensive sewage disposal and the requirement of denitrogenation dephosphorizing simultaneously, people have invented multipleThe sbr reactor technique of improvement is as MSBR technique, cyclic activated sludge system, ICEAS technique etc. Though these techniquesPossess Nitrogen/Phosphorus Removal certain time and can move continuously and meet the requirement of extensive sewage disposalEtc. feature, but its still Shortcomings part as: what MSBR technique mainly adopted is activated sludge process, therebyDwell time of sewage is relatively long, adds that treatment step is more, causes system floor space larger, builds and throwsMoney is large, operation maintenance complexity; The effect that staticly settles of ICEAS technique and cyclic activated sludge system is subject to doing into waterDisturb, sedimentation effect is not good, and the Nitrogen/Phosphorus Removal of ICEAS technique and cyclic activated sludge system is also subject to necessarily simultaneouslyRestriction, especially phosphor-removing effect not good. The floor space of these improved process is large simultaneously, and operating cost is high,Capital expenditure is large, operation maintenance complexity.
Summary of the invention
The object of this invention is to provide a kind of order that circulates and criticize sewage-treatment plant and the technique of operation, existing to overcomeThe defect and the deficiency that have the technology of sbr reactor technique to exist, realize simultaneously efficient remove carbon in sewage, nitrogen,The pollutants such as phosphorus, the present invention has small accommodation area, it is low to invest, operating cost is low, process maintenance management letterThe advantages such as list.
Technical scheme of the present invention is:
The order that circulates is criticized a sewage-treatment plant for operation, comprises pond, center and around the more than two of one circleSBR pond, described pond, center is communicated with by gate with each SBR pond, described pond, center connects water inletPipe, outlet pipe and mud valve, described SBR pond all connects outlet pipe and mud valve, described SBR pond phaseBetween neighbour, be communicated with the unlatching of each SBR pond by gate or close and realize in parallel or series connection by gate.
Further, described SBR pond is more than two or three.
Further, also comprise and strain hydrophone, described in strain hydrophone be connected to described Chi HuoSBR pond, center inTop.
The order that circulates is criticized a sewage treatment process for operation, and first sewage enter pond, center, then enter aroundIn the SBR pond that pond, center one is enclosed, proceed reaction or precipitation, between described SBR pond is adjacent, pass through gateBe communicated with, the unlatching of each SBR pond by gate or close and realize in parallel or series connection, described pond, center is with anaerobismMode is moved, and described SBR pond is reaction tank or sedimentation basin, move with aerobic, anoxic or anaerobism mode,Sewage or the mud order that circulates in whole system is criticized operation.
Technological core of the present invention is multiple SBR ponds that can independent operating to be arranged to a ring shape knotStructure. Whole technique is made up of plural SBR pond, and multiple SBR pond forms a circle, the middle heart of circleBecome the functions such as the adjusting of a collection water quality and quantity, water distribution, sludge reflux, mixed-liquor return, biological selector to beThe pond, center of one. Circulate and carry out different functions in single SBR pond in combined running.
First sewage enter in the pond, center being surrounded by SBR pond, and pond, center is equivalent to a water quality and the water yieldRegulating reservoir, in order to alleviate due to influent quality and the water yield inhomogeneous and to biochemical treatment process form impact.
Pond, center is generally moved in anaerobism mode, during the activated sludge of carrying under one's arms in interior backflow mixed liquor also entersIn heart pond, pond, center is similar to a biological selector, creates microbial population negative at height in biological selectorRace condition under lotus, selects dominant bacteria, effectively suppresses der Pilz breeding, and can utilize fast originalIn activated sludge and sewage, the quick adsorption ability of the mud of carrying under one's arms is removed dissolubility pollutant in water. In pondAnaerobic condition also can make the phosphorus in returned sludge fully discharge, for this technique is carried the efficient removal of phosphor in sewageFor necessary condition.
The method of operation in single SBR pond both can traditional SBR pond mode move, also can multiple SBRThe mode of pond combination is moved. Sewage from pond, center enters SBR pond, single SBR pond with water inlet, reaction,Precipitation, draining, idle these five operation sequencing batch operations. Be equivalent to multiple SBR pond parallel running, eachSBR pond is separate, does not interfere with each other.
When multiple SBR pond combined running, sewage is from a reaction tank enters, react one section in this pond timeBetween after, the gate being connected with adjacent reaction pond from this pond enters next reaction tank, can also continue from connectGate enters next SBR pond again, thereby realizes many ponds combined running, and single SBR pond is in combined runningDifferent functions is carried out in circulation.
As preferably, four SBR pond combination of two form two-stage series connection combined runnings, and two ponds can replaceGround moves in the mode of reaction tank or sedimentation basin, adds pond, center, and now whole response class is similar to CASSTechnique, the function of biological selector is carried out in pond, center, the different phase of reaction tank operation also can be respectively with aerobic-The mode of anoxic or anaerobic-aerobic is moved, to realize the requirement of while nitrogen or dephosphorization.
As preferably, three SBR ponds form combined runnings, and two SBR ponds of both sides are alternately as precipitationPond, moves with aerobic or anaerobism mode, and middle SBR pond is moved in Aerobic Pond mode as reaction tank always;Or three SBR ponds are all as reaction tank, with anaerobic-aerobic technique or anoxic-aerobic process operation; With realityThe process operation condition of existing Aerobic-anaerobic or aerobic-anaerobic, removes the strengthening of nitrogen in water or phosphorus thereby realize.
As preferably, four SBR ponds form the operation of level Four tandem compounds, during with A2/O process operation,First order SBR pond is moved in anaerobism mode as reaction tank, SBR pond, the second level as reaction tank with anoxic sideFormula operation, third level SBR moves in aerobic mode as reaction tank in pond, and fourth stage SBR pond is as sedimentation basinPrecipitate; Part sewage directly enters first order SBR pond, and the activated sludge in first order SBR pond comesFrom the upper mud that circulation precipitates, in this reaction tank, carry out the release of anaerobic phosphorus; Another partSewage enters SBR pond, the second level, and SBR pond, the second level is moved with Hypoxic types, utilizes the carbon source in sewage to enterRow denitrification denitrogenation, the nitrate mixed liquor and the raw sewage that are now back to pond, center from third level SBR pond are mixedAfter closing, enter SBR pond, the second level to realize denitrification denitrogenation from inlet gate; Third level SBR pond is with aerobic sideFormula operation, to realize the excessive absorption of oxidation of coal in sewage, nitrated and phosphorus. React rear fourth stage SBRPrecipitation function is carried out in pond, carries out mud-water separation; After draining, fourth stage SBR pond transfers reaction tank to by sedimentation basin,Third level SBR pond transfers sedimentation basin to, thereby has realized the circulatory function of all ponds body.
As preferably, four SBR ponds form the operation of level Four tandem compounds, and four reaction tanks are inverted with improvementA2/O process operation, now first order SBR moves with Hypoxic types as reaction tank in pond, second level SBRPond is moved in anaerobism mode as reaction tank, and third level SBR moves in aerobic mode as reaction tank in pond, theLevel Four SBR precipitates as sedimentation basin in pond; The nitrate that is back to pond, center from third level reaction tank mixesAfter mixing with raw sewage, liquid directly enters first order SBR pond, the activity in first order SBR pond from inlet gateMud, from the upper mud that circulation precipitates, carries out denitrification denitrogenation in this SBR pond; SecondLevel SBR pond is moved in anaerobism mode, and under anaerobic condition, activated sludge carries out the release of phosphorus; Third level SBR pondMove in aerobic mode, to realize the excessive absorption of oxidation of coal in sewage, nitrated and phosphorus; After having reacted thePrecipitation operation is carried out in level Four SBR pond, carries out mud-water separation and follow-up drainage procedure.
When four SBR pond combined runnings, by opening and closing gate, control the backflow position of mixed liquor,Three reaction tanks move in anaerobic-anoxic-oxic pond mode simultaneously, can also realize the operation side of VIP techniqueFormula.
When five and above SBR pond combined running, can form the operational effect of Bardenpho technique, withRemoval effect when nitrogen and phosphorus in enhanced sewage.
Beneficial effect of the present invention is:
(1) the present invention can have the method for operation of multiple combination technique, thereby can adapt to various sanitary sewagesCondition of water quality, also can adapt to the condition of water quality of various industrial wastewaters, can also adapt to various waste water simultaneouslyWater quality and the water yield impact, all can produce higher removal effect to the pollution of carbon, nitrogen and phosphorus in sewage.
(2) precipitation process of technique of the present invention is complete quiet heavy intermediate processing, in precipitation process, is not subject toAny interference, therefore effect is identical with traditional SBR technique, and mud-water separation is respond well.
(3) device of the present invention and technique can realize circulation batch type processing, and the efficiency of processing is high, and effectFruit is good, owing to not needing to arrange in addition sedimentation basin, does not also need to arrange sludge reflux system and special interior timeStreaming system, does not need additionally to arrange regulating reservoir yet, and therefore, floor space is little, process system list, running costWith low, operation maintenance is simple.
Brief description of the drawings
Fig. 1 is the floor map of apparatus of the present invention (when SBR pond is 4).
Fig. 2 is the A-A cutaway view of Fig. 1 shown device.
Fig. 3 is the B-B cutaway view of Fig. 1 shown device.
Fig. 4 is the flow chart of single pond with traditional SBR process operation.
Fig. 5 is the process chart of four pond combination of two operations.
Fig. 6 is the process chart of three pond combined runnings.
Fig. 7 is the flow charts of four pond combinations with A2/O process operation.
Fig. 8 is the flow chart that inversion A 2/O process operation is combined to improve in four ponds.
Fig. 9 is the process chart of five pond combined runnings.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further details, but the present invention is not limited to this.
When SBR pond is 4, the floor map of apparatus of the present invention as shown in Figure 1. A kind of circulation order is criticized fortuneThe sewage-treatment plant of row, comprises pond, center 1 and a SBR pond 2, the 2nd SBR pond around one circle3, Three S's BR pond 4 and the 4th SBR pond 5, pond, center 1 and a SBR pond 2 are by gate 6 or 6 'Be communicated with, pond, center 1 with the 2nd SBR pond 3 by gate 7 or 7 ' be communicated with pond, center 1 and Three S's BRPond 4 is by gate 8 or 8 ' be communicated with, pond, center 1 with the 4th SBR pond 5 by gate 9 or 9 ' is communicated with,The one SBR pond 2 with the 4th SBR pond 5 by gate 10 or 10 ' be communicated with a SBR pond 2 and secondSBR pond 3 is by gate 11 or 11 ' be communicated with, the 2nd SBR pond 3 and Three S's BR pond 4 are by gate 12Or 12 ' be communicated with, Three S's BR pond 4 with the 4th SBR pond 5 by gate 13 or 13 ' be communicated with firstSBR pond 2 connects the first discharge pipeline 14, the two SBR ponds 3 and connects the second discharge pipeline 15, the Three S's BR ponds4 connect the 3rd discharge pipeline 15, the four SBR ponds 5 connects the 4th discharge pipeline 16, meanwhile, and a SBR pond 2All being connected the first outlet pipe 18, the two SBR ponds 3 with the 4th SBR pond 5 is all connected with Three S's BR pond 4The second outlet pipe 19, the unlatching of each SBR pond by gate or close and realize in parallel or series connection.
Embodiment 1
Single pond is with traditional SBR process operation, and its flow chart as shown in Figure 4. Sewage enters respectively from pond, center 1Enter a SBR pond 2, the 2nd SBR pond 3, Three S's BR pond 4 and the 4th SBR pond 5, single SBRPond is with water inlet, reaction, precipitation, draining, idle these five operation sequencing batch operations. Multiple SBR pond parallel connectionOperation, each SBR pond is separate, does not interfere with each other.
Embodiment 2
Four SBR pond two pond combinations move in the mode of cyclic activated sludge system, and its flow chart as shown in Figure 5. TheThe later stage is being reacted as sedimentation basin, the 2nd SBR pond 3 and the 4th SBR in one SBR pond 2 and Three S's BR pond 4Pond 5 is as reaction tank. First sewage enter pond, center 1, after the precipitation phase finishes, and a SBR pond 2 andThe precipitating sludge in Three S's BR pond 4 is also back to pond, center 1, and now pond, center 1 is as biological selector, andRear sewage enter the 2nd SBR pond 3 and 5, the two SBR ponds 3, the 4th SBR pond and the 4th SBR pond 5 withThe mode of double oxygen is moved, and carries out denitrification denitrogenation activity. Then the mixed liquor in the 2nd SBR pond 3 passes through lockDoor enters Three S's BR pond 4, the four SBR pond 5 mixed liquors and enters a SBR pond 2 by gate. TheReact in aerobic mode in one SBR pond 2 and Three S's BR pond 4, a SBR pond in course of reaction2 and Three S's BR pond 4 in mixed liquor reflux and enter pond, center 1 by gate, now reflux main orderBe the nitrate refluxing in a SBR pond 2 and Three S's BR pond 4. After reaction finishes, a SBRPond 2 and Three S's BR pond 4 enter precipitation operation, carry out quiescent setting, after precipitation finishes, enter drainage period,Employing is strained after hydrophone is strained water and is entered next circulation. Next circulation can also be by a SBR pond 2, the 3rdThe exchange function in the function in SBR pond 4 and the 2nd SBR pond 3, the 4th SBR pond 5, or circulate between each pondForm new combination.
Embodiment 3
Four pond combinations move in the mode of A2/O technique, and its flow chart as shown in Figure 7. Pond, center 1 is water inletPond, pond, center 1 also has the function of regulating reservoir concurrently simultaneously. First pond, center 1 sewage after treatment enter first2, the one SBR ponds 2, SBR pond are for to move in anaerobism mode, and a SBR pond 2 is in a upper same periodFunction is sedimentation basin, therefore, is retained in returned sludge in a SBR pond 2 in a SBR pond 2Carry out anaerobic phosphorus release, the organic matter in water inlet carries out anaerobism ammonification simultaneously. Current in the one SBR pond 2Continue to enter 3, the two SBR ponds 3, the 2nd SBR pond by gate and move in the mode of the oxygen of holding concurrently, simultaneously from theThree S's BR pond 4 is back in pond, center 1 by gate, logical with the raw sewage composition mixed liquor in pond, center 1Cross gate and enter the 2nd SBR pond 3, in the 2nd SBR pond 3, carry out denitrification denitrogenation, simultaneously the 2nd SBRIn pond 3, proceeding phosphorus discharges. Mixed liquor continues to flow into Three S's BR by gate from the 2nd SBR pond 34, the Three S's BR ponds 4, pond are moved in aerobic mode, mainly carry out BOD in Three S's BR pond 4Remove, the aerobic absorption of nitrated and phosphorus. Mixed liquor in Three S's BR pond 4 enters the 4th by gate afterwards5, the four SBR ponds 5, SBR pond are moved in the mode of sedimentation basin, process precipitation in the 4th SBR pond 5,After mud-water separation, supernatant is by straining hydrophone discharge, and the discharge of the mud a precipitating part is excess sludge,Another part is retained in the 4th SBR pond 5 as returned sludge, thereby has avoided arranging in addition sludge refluxFacility. The water inlet of the next same period is since the 4th SBR pond 5, using Three S's BR pond 4 as sedimentation basin,Thereby realize the circulatory function of all ponds body.
Claims (9)
1. the order that circulates is criticized a sewage-treatment plant for operation, it is characterized in that, comprises pond, center and around itThe SBR pond of one circle, described pond, center is communicated with by gate with each SBR pond, and described pond, center connectsWater inlet pipe, outlet pipe and mud valve, described SBR pond all connects outlet pipe and mud valve, described SBRBetween pond is adjacent, be communicated with the unlatching of each SBR pond by gate or close and realize in parallel or series connection by gate.
2. circulation order according to claim 1 is criticized the sewage-treatment plant of operation, it is characterized in that instituteThe SBR pond of stating is for more than two or three.
3. circulation order according to claim 1 and 2 is criticized the sewage-treatment plant of operation, it is characterized in that,Also comprise and strain hydrophone, described in strain hydrophone and be connected to the middle and upper part in described Chi HuoSBR pond, center.
4. the order that circulates is criticized a sewage treatment process for operation, it is characterized in that, first sewage enter pond, center,Then enter in the SBR pond of enclosing around pond, center one and proceed reaction or precipitation, described SBR pond is adjacentBetween be communicated with by gate, the unlatching of each SBR pond by gate or close and realize in parallel or series connection, describedPond, center is moved in anaerobism mode, and described SBR pond is reaction tank or sedimentation basin, with aerobic, anoxic or detestOxygen mode is moved, and sewage or the mud order that circulates in whole system is criticized operation.
5. circulation order according to claim 4 is criticized the sewage treatment process of operation, it is characterized in that instituteThe SBR pond of stating is for more than two or three.
6. the sewage treatment process of criticizing operation according to the circulation order described in claim 4 or 5, is characterized in that,Described SBR pond is four, and described SBR pond combination of two forms two-stage series connection combined running, Liang ChijiaoMove in the mode of reaction tank or sedimentation basin for ground, add pond, center, now whole response class is similar to CASSTechnique, the function of biological selector is carried out in pond, center, and the different phase of reaction tank operation is respectively with aerobic-anaerobicOr the mode of anaerobic-aerobic moves, to realize the requirement of nitrogen simultaneously or dephosphorization.
7. the sewage treatment process of criticizing operation according to the circulation order described in claim 4 or 5, is characterized in that,Described SBR pond is three, described SBR pond combined running, and two SBR ponds of both sides replace conductSedimentation basin, moves with aerobic or anaerobism mode, middle SBR pond as reaction tank always in Aerobic Pond modeOperation; Or three SBR ponds are all as reaction tank, with anaerobic-aerobic technique or anoxic-aerobic process operation.
8. the sewage treatment process of criticizing operation according to the circulation order described in claim 4 or 5, is characterized in that,Described SBR pond is four, and described SBR pond forms the operation of level Four tandem compound, transports with A2/O techniqueWhen row, first order SBR pond is moved in anaerobism mode as reaction tank, SBR pond, the second level as reaction tank withHypoxic types operation, third level SBR moves in aerobic mode as reaction tank in pond, fourth stage SBR pond conductSedimentation basin precipitates; Part sewage directly enters first order SBR pond, the activity in first order SBR pondMud, from the upper mud that circulation precipitates, carries out the release of anaerobic phosphorus in this reaction tank; SeparatelyPart sewage enters SBR pond, the second level, and SBR pond, the second level is moved with Hypoxic types, utilizes in sewageCarbon source is carried out denitrification denitrogenation, is now back to the nitrate mixed liquor in pond, center and former from third level SBR pondSewage enters SBR pond, the second level to realize denitrification denitrogenation from inlet gate after mixing; Third level SBR pond withAerobic mode is moved, to realize the excessive absorption of oxidation of coal in sewage, nitrated and phosphorus; React the rear the 4thPrecipitation function is carried out in level SBR pond, carries out mud-water separation; After draining, fourth stage SBR pond is transferred to instead by sedimentation basinYing Chi, third level SBR pond transfers sedimentation basin to, thereby has realized the circulatory function of all ponds body.
9. the sewage treatment process of criticizing operation according to the circulation order described in claim 4 or 5, is characterized in that,Described SBR pond is four, and described SBR pond forms the operation of level Four tandem compound, and four reaction tanks are to changeGood inverted A2/O process operation, now first order SBR moves with Hypoxic types as reaction tank in pond, theSecondary SBR moves in anaerobism mode as reaction tank in pond, third level SBR pond as reaction tank in aerobic modeOperation, fourth stage SBR precipitates as sedimentation basin in pond; Be back to the nitre in pond, center from third level reaction tankAfter mixing with raw sewage, hydrochlorate mixed liquor directly enters first order SBR pond, first order SBR pond from inlet gateIn activated sludge from the upper mud that precipitates of circulation, in this SBR pond, carry out denitrification de-Nitrogen; SBR pond, the second level is moved in anaerobism mode, and under anaerobic condition, activated sludge carries out the release of phosphorus; The 3rdLevel SBR pond is moved in aerobic mode, to realize the excessive absorption of oxidation of coal in sewage, nitrated and phosphorus; ReactionAfter completing, precipitation operation is carried out in fourth stage SBR pond, carries out mud-water separation and follow-up drainage procedure.
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Cited By (8)
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| CN106745699A (en) * | 2016-11-28 | 2017-05-31 | 广西大学 | A kind of composite S BR waste water treatment process |
| CN108862589A (en) * | 2018-07-25 | 2018-11-23 | 苏州市排水有限公司 | A kind of multi-mode integrated effluent disposal system |
| CN110980946A (en) * | 2019-11-25 | 2020-04-10 | 北京林业大学 | Improved method of CASS sewage treatment process for removing total nitrogen in enhanced manner |
| CN111533370A (en) * | 2020-04-29 | 2020-08-14 | 华南理工大学 | Optimal arrangement method for biochemical treatment structures of sequencing batch sewage treatment process |
| CN113620555A (en) * | 2021-09-06 | 2021-11-09 | 上海市政工程设计研究总院（集团）有限公司 | Sludge gravity concentration device and sewage treatment plant |
| CN113716691A (en) * | 2021-08-24 | 2021-11-30 | 北京工业大学 | Sludge double-backflow device and method for deep denitrification of landfill leachate based on anaerobic-aerobic-anoxic |
| US11407664B2 (en) * | 2017-06-02 | 2022-08-09 | Veolia Water Solutions & Technologies Support | Method for a water treatment in a system comprising at least one sequencing batch reactor and a moving bed biofilm reactor |
| CN114956313A (en) * | 2022-05-09 | 2022-08-30 | 广东首汇蓝天工程科技有限公司 | Sewage treatment method |
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