CN202849201U - Sludge heat drying sewage reuse device - Google Patents
Sludge heat drying sewage reuse device Download PDFInfo
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- CN202849201U CN202849201U CN 201220419607 CN201220419607U CN202849201U CN 202849201 U CN202849201 U CN 202849201U CN 201220419607 CN201220419607 CN 201220419607 CN 201220419607 U CN201220419607 U CN 201220419607U CN 202849201 U CN202849201 U CN 202849201U
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Abstract
The utility model discloses a sludge heat drying sewage reuse device, mainly comprising a regulation pool, an A/O (anoxic/oxic) circular reactor, an MBR (membrane bio-reactor) membrane pool and a plate-and-frame filter press, wherein the A/O circular reactor is at least provided with an A area and an O area, a perforation aerator pipe is arranged in the O area, the A area is connected with the MBR membrane pool including an internal membrane assembly, an aerator pipe and an external centrifugal pump, the centrifugal pump is connected with the membrane assembly, and the MBR membrane pool is connected with the plate-and-frame filter press through a sludge pump. According to the sludge heat drying sewage reuse device disclosed by the utility model, sewage flows into the regulation pool and then enters the special A/O circular reactor through a sewage lifting pump for nitrogen removal by synchronous nitrosation-denitrification to remove organic pollutants and stink under a poor condition of low C/N ratio of sewage; sludge of the reactor flows into the MBR membrane pool to be subjected to solid-liquid separation, and the discharged water is reused as circulated cooling water and reclaimed water; and the sludge is returned to the A/O circular reactor. The sludge heat drying sewage reuse device disclosed by the utility model has the advantages of low DO, high denitrification reaction efficiency, compact device and short flow, and fills the blank of the sewage treatment technique in China.
Description
Technical field
The utility model relates to plumbing and environmental protection technical field, specifically a kind of device of sludge heat drying reusing sewage processing.
Background technology
Town sewage plant mud and industrial sludge are carried out heat drying, make the water ratio of mud be reduced to 30-40% from about 80%, sludge quantity reduces 67-71%, then dewatered sludge being acted as a fuel by boiler or cement kiln is fully utilized with raw material, reaches the purpose of sewage sludge harmlessness, minimizing, stabilization and resource utilization.The sewage that accounts for wet mud 70% that produces in the mud drying process, this sewage foul smell is heavy, pollutes to weigh, and carbon-nitrogen ratio is seriously lacked of proper care (C/N was near 1: 1), does not meet about 4: 1 biological denitrificaion requirement.Because China's sludge anhydration burning still is in the starting stage, this sewage be there is no treatment technology and the equipment of mature and reliable.
Biological denitrificaion can be divided three classes:
The tradition nitrated-denitrification denitrogenation, under the effect of ammonia oxidizing bacteria (AOB), ammonia nitrogen (NH
4 +) be converted into nitrite (NO
2 -), then being converted into nitrate transformation under nitrite nitrate oxidizing bacteria (NOB) effect is nitrate (NO
3 -); NO in the denitrification process
3-be converted into first NO
2 -, then be converted into NO
2And NO, be converted at last N
2
2. short-cut nitrification and denitrification is controlled at the first step with nitrifying process, suppresses nitrite to nitrate transformation, by NO
2 -Directly denitrification is N
2
3. the short distance nitration Anammox is controlled at the first step with nitrifying process, suppresses nitrite to nitrate transformation, by NO
2 -Direct Anammox.
Short-cut nitrification and denitrification is compared with nitration denitrification and had the following advantages: 1) oxygen requirement reduces 25%, can effectively reduce the power consumption of oxygenation; 2) organic carbon source of saving 40%, this this sewage to low ratio of carbon to ammonium seems particularly important; 3) shortened the biochemical reaction course, the corresponding biological denitrificaion efficient that improved; 4) less excess sludge discharge amount.
In the prior art, the A/O Biological Phosphorus Removal Processes is the sewage biological treatment system by anaerobic and aerobic two portions reaction composition.After sewage enters anaerobic pond, mix with returned sluge.PolyP bacteria in the active sludge absorbs the BOD in the sewage in this course in a large number, and the form of the phosphorus in the mud with orthophosphoric acid salt is discharged in the mixed solution.After mixed solution enters Aerobic Pond, the oxidized decomposition of organism, simultaneously polyP bacteria absorbs orthophosphoric acid salt in the mixed solution in a large number in mud.
A/O is the abbreviation of Anoxic (anaerobism)/Oxic (aerobic), its superiority is except organic pollutant is obtained the degraded, also having certain denitrogenation dephosphorizing function, is with being the pre-treatment of active sludge, so the A/O method is improved activated sludge process with the anaerobic hydrolysis technology.
Also have in the prior art, the applied bio-reactor of MBR membrane cisterna (Membrane Bio-Reactor, MBR) is the Novel state Waste Water Treatment of membrane separation technique and biologic treating technique combination.Replace the terminal second pond of traditional biological treatment technology with membrane module, in bio-reactor, keep the high reactivity sludge concentration, improve the biological treatment organic loading, thereby reduce the sewage treatment facility floor space, and by keeping low sludge loading to reduce surplus sludge volume.Main active sludge and the larger molecular organics that utilizes in the membrane separation plant entrapping tank of being immersed in the aerobe pond.Active sludge (MLSS) concentration can be promoted to 8000～10,000mg/L in the membrane bioreactor system, even higher; Sludge age (SRT) can extend to more than 30 days.
In view of this, for the problems referred to above, propose a kind of reasonable in designly and can improve the device that the sludge heat drying reusing sewage of above-mentioned disappearance is processed, then draw its brand-new treatment process.
The utility model content
The purpose of this utility model is to provide a kind of device of sludge heat drying reusing sewage processing, and the defective for the cacodorous feature of sludge heat drying sewage tool and sewage low-carbon nitrogen ratio adopts special multipoint water feeding mode, suppresses the foul gas loss.
In order to reach above-mentioned purpose, the utility model provides following technical scheme: the device that a kind of sludge heat drying reusing sewage is processed comprises A/O recirculation reactor, MBR membrane cisterna, plate-and-frame filter press; Described A/O recirculation reactor arranges an A district and O district at least, O arranges boring aeration pipe in the district, described A district is connected to the MBR membrane cisterna, described MBR membrane cisterna comprises inner membrane module, aeration tube and outside centrifugal water pump, described centrifugal water pump links to each other with membrane module, and described MBR membrane cisterna is connected to plate-and-frame filter press by sludge pump.
The boring aeration pipe of described A/O recirculation reactor is connected aeration tube and all is connected with external gas blower with the MBR membrane cisterna, this gas blower is roots blower.
Described A/O recirculation reactor arranges the water inlet of at least one place, discharging device; A/O recirculation reactor top and the bottom all arrange the mixing zone.
Also include equalizing tank, described equalizing tank is connected to the A/O recirculation reactor by sewage pump.
Also be provided with sludge reflux pump between described MBR membrane cisterna and the A/O recirculation reactor.
In order to reach above-mentioned another purpose, the utility model provides following technical scheme: the method that a kind of sludge heat drying reusing sewage is processed, and its step is as follows:
Sewage enters equalizing tank, enters the A/O recirculation reactor by lift pump;
The O district that the pressurized air that roots blower produces enters A/O recirculation reactor inside is nitrification zone, arranges in the O district that boring aeration pipe carries out aeration to sewage;
Mixed solution behind the aeration in the O district because of gas stripping to upwelling, enter backward peripheral A district, mixing zone to katabatic drainage;
The gravity flow of the mixed solution of A/O recirculation reactor enters membrane module, aeration tube and the outside centrifugal water pump of MBR membrane cisterna by inside and carries out solid-liquid separation;
MBR membrane cisterna intermittent aeration, intermittently water outlet, water outlet is done the make up water utilization as reclaimed water reuse to recirculating cooling water system, and mud is by sludge reflux pumped back A/O recirculation reactor;
MBR membrane cisterna excess sludge is promoted to plate-and-frame filter press by sludge pump and dewaters, and dewatered sludge returns the sludge heat drying machine.
The air quantity of the generation when described roots blower carries out aeration will be controlled the dissolved oxygen concentration in O district at 1-2mg/l, and the control water temperature is at 25-30 ℃, and pH carries out the nitrosation reaction of ammonia nitrogen and contains nitration reaction in the condition of 7.5-8.5; Described mixed solution is controlled at 0.2-0.5mg/l at the A district dissolved oxygen to katabatic drainage, carries out denitrification denitrogenation.
Compared to prior art, the utlity model has following beneficial effect:
(1) provides sludge heat drying wastewater treatment equipment and method, filled the domestic gaps;
(2) adopt the aeration process of low DO to save oxygen-supplying amount 25%;
(3) reduce the denitrifying organic carbon source that adds;
(4) nitrosification efficient is low, and effluent quality reaches the recirculating cooling water system make up water standard of GB/T19923-2005 " urban sewage reutilization industry water standard " regulation;
(5) treatment process compact construction, modularization making, floor space is little, treatment unit equipment, systematize.
In a word, it comprises equalizing tank, sewage pump, special-purpose A/O recirculation reactor, MBR pond, sewage sludge reflux pump the utility model.Sewage flows into equalizing tank, enters special-purpose A/O recirculation reactor by sewage pump, under the rough sledding of the low C/N ratio of sewage, carries out synchronous nitrosification-denitrification denitrogenation, removes organic pollutant and stench; The muddy water gravity flow of reactor enters MBR pond solid-liquid separation, and water outlet is as water reuse in the recirculated cooling water.Mud then returns the A/O recirculation reactor.The utlity model has low DO, denitrification reaction efficient height, compact, the flow process weak point of device, filled up the domestic blank of this sewage disposal technology.
Description of drawings
Accompanying drawing 1 is the structural representation of the device of a kind of sludge heat drying reusing sewage processing of the utility model.
Among the figure: 1, equalizing tank; 2, sewage pump; 3, A/O recirculation reactor; 4, gas blower; 5, boring aeration pipe; 6, MBR membrane cisterna; 7, membrane module; 8, sludge reflux pump; 9, centrifugal water pump; 10, sludge pump; 11, plate-and-frame filter press.
Embodiment
Relevant detailed description of the present utility model and technology contents cooperate description of drawings as follows, yet accompanying drawing only provides the usefulness of reference with explanation, and the utility model is limited.
Embodiment 1:
According to shown in Figure 1, the device that the sludge heat drying reusing sewage is processed comprises equalizing tank 1, sewage pump 2, A/O recirculation reactor 3, gas blower 4, boring aeration pipe 5, MBR membrane cisterna 6, membrane module 7, sludge reflux pump 8, centrifugal water pump 9, sludge pump 10, plate-and-frame filter press 11.Described A/O recirculation reactor arranges an A district and O district at least, in 0 district boring aeration pipe is set, described A district is connected to the MBR membrane cisterna, described MBR membrane cisterna comprises inner membrane module, aeration tube and outside centrifugal water pump, described centrifugal water pump links to each other with membrane module, and described MBR membrane cisterna is connected to plate-and-frame filter press by sludge pump.The boring aeration pipe of described A/O recirculation reactor is connected aeration tube and all is connected with external gas blower with the MBR membrane cisterna, this gas blower is roots blower.Described A/O recirculation reactor arranges the water inlet of at least one place, discharging device; A/O recirculation reactor top and the bottom all arrange the mixing zone.Also include equalizing tank, described equalizing tank is connected to the A/O recirculation reactor by sewage pump.Also be provided with sludge reflux pump between described MBR membrane cisterna and the A/O recirculation reactor.
Sewage enters equalizing tank 1 average and all measures, and pumps into special A/O recirculation reactor 3 by lift pump 2, and the pressurized air that gas blower 4 produces enters the boring aeration pipe 5 in the O district (nitrification zone) of 3 inside, and sewage is carried out aeration.The dissolved oxygen concentration that the air quantity of adjusting gas blower 4 is controlled 0 district is at 1mg/L, and the control water temperature is 25 ℃, carries out the short distance nitration of ammonia nitrogen under the condition of pH value 7.5; Mixed solution is at O district internal cause gas stripping and to upwelling, and peritropous A district is to katabatic drainage again after entering the mixing zone, top and mixing, and A district dissolved oxygen is controlled at 0.2mg/L, carries out denitrification denitrogenation; The mixed solution gravity flow of A/O recirculation reactor 3 enters MBR membrane cisterna 6 and carries out solid-liquid separation.MBR membrane cisterna 6 is provided with membrane module 7, centrifugal water pump 9 and sludge reflux pump 8.MBR membrane cisterna 6 intermittent aerations, intermittently water outlet, water outlet is done the make up water utilization as reclaimed water reuse to recirculating cooling water system, and mud is sent A/O recirculation reactor 3 back to by sludge reflux pump 8; Excess sludge is promoted to plate-and-frame filter press 11 by sludge pump 10, and dewatered sludge returns the sludge heat drying machine.The sludge concentration general control of A/O recirculation reactor 3 is at 5000mg/L.The A/O recirculation reactor is divided into several A districts and O district.O establishes boring aeration pipe in the district, because the gas stripping mixed solution upwards flows, forms the up-flow district; Mixed solution proportion flows downward greater than the O district in the A district, forms to fall the stream district, forms thus the reactor internal recycle; Reactor arranges multipoint water feeding, discharging device; The reactor top and the bottom all arrange the mixing zone, finish short distance nitration and denitrifying dual-use function in same reactor; Reactor is intake continuously, continuous effluent.
Embodiment 2:
According to shown in Figure 1, the device that the sludge heat drying reusing sewage is processed comprises equalizing tank 1, sewage pump 2, A/O recirculation reactor 3, gas blower 4, boring aeration pipe 5, MBR membrane cisterna 6, membrane module 7, sludge reflux pump 8, centrifugal water pump 9, sludge pump 10, plate-and-frame filter press 11.Described A/O recirculation reactor arranges an A district and O district at least, O arranges boring aeration pipe in the district, described A district is connected to the MBR membrane cisterna, described MBR membrane cisterna comprises inner membrane module, aeration tube and outside centrifugal water pump, described centrifugal water pump links to each other with membrane module, and described MBR membrane cisterna is connected to plate-and-frame filter press by sludge pump.The boring aeration pipe of described A/O recirculation reactor is connected aeration tube and all is connected with external gas blower with the MBR membrane cisterna, this gas blower is roots blower.Described A/O recirculation reactor arranges the water inlet of at least one place, discharging device; A/O recirculation reactor top and the bottom all arrange the mixing zone.Also include equalizing tank, described equalizing tank is connected to the A/O recirculation reactor by sewage pump.Also be provided with sludge reflux pump between described MBR membrane cisterna and the A/O recirculation reactor.
Sewage enters equalizing tank 1 average and all measures, and pumps into special A/O recirculation reactor 3 by lift pump 2, and the pressurized air that gas blower 4 produces enters the boring aeration pipe 5 in the O district (nitrification zone) of 3 inside, and sewage is carried out aeration.The dissolved oxygen concentration that the air quantity of adjusting gas blower 4 is controlled the O district is at 2mg/L, and the control water temperature is 30 ℃, carries out the short distance nitration of ammonia nitrogen under the condition of pH value 8.5; Mixed solution is at 0 district's internal cause gas stripping and to upwelling, and peritropous A district is to katabatic drainage again after entering the mixing zone, top and mixing, and A district dissolved oxygen is controlled at 0.5mg/L, carries out denitrification denitrogenation; The mixed solution gravity flow of A/O recirculation reactor 3 enters MBR membrane cisterna 6 and carries out solid-liquid separation.MBR membrane cisterna 6 is provided with membrane module 7, centrifugal water pump 9 and sludge reflux pump 8.MBR membrane cisterna 6 intermittent aerations, intermittently water outlet, water outlet is done the make up water utilization as reclaimed water reuse to recirculating cooling water system, and mud is sent A/O recirculation reactor 3 back to by sludge reflux pump 8; Excess sludge is promoted to plate-and-frame filter press 11 by sludge pump 10, and dewatered sludge returns the sludge heat drying machine.The sludge concentration general control of A/O recirculation reactor 3 is at 7000mg/L.The A/O recirculation reactor is divided into several A districts and O district.O establishes boring aeration pipe in the district, because the gas stripping mixed solution upwards flows, forms the up-flow district; Mixed solution proportion flows downward greater than the O district in the A district, forms to fall the stream district, forms thus the reactor internal recycle; Reactor arranges multipoint water feeding, discharging device; The reactor top and the bottom all arrange the mixing zone, finish short distance nitration and denitrifying dual-use function in same reactor; Reactor is intake continuously, continuous effluent.
Embodiment 3:
According to shown in Figure 1, the device that the sludge heat drying reusing sewage is processed comprises equalizing tank 1, sewage pump 2, A/O recirculation reactor 3, gas blower 4, boring aeration pipe 5, MBR membrane cisterna 6, membrane module 7, sludge reflux pump 8, centrifugal water pump 9, sludge pump 10, plate-and-frame filter press 11.Described A/O recirculation reactor arranges an A district and O district at least, O arranges boring aeration pipe in the district, described A district is connected to the MBR membrane cisterna, described MBR membrane cisterna comprises inner membrane module, aeration tube and outside centrifugal water pump, described centrifugal water pump links to each other with membrane module, and described MBR membrane cisterna is connected to plate-and-frame filter press by sludge pump.The boring aeration pipe of described A/O recirculation reactor is connected aeration tube and all is connected with external gas blower with the MBR membrane cisterna, this gas blower is roots blower.Described A/O recirculation reactor arranges the water inlet of at least one place, discharging device; A/O recirculation reactor top and the bottom all arrange the mixing zone.Also include equalizing tank, described equalizing tank is connected to the A/O recirculation reactor by sewage pump.Also be provided with sludge reflux pump between described MBR membrane cisterna and the A/O recirculation reactor.
Sewage enters equalizing tank 1 average and all measures, and pumps into special A/O recirculation reactor 3 by lift pump 2, and the pressurized air that gas blower 4 produces enters the boring aeration pipe 5 in the O district (nitrification zone) of 3 inside, and sewage is carried out aeration.The dissolved oxygen concentration that the air quantity of adjusting gas blower 4 is controlled the O district is at 1.5mg/L, and the control water temperature is 28 ℃, carries out the short distance nitration of ammonia nitrogen under the condition of pH value 8.0; Mixed solution is at O district internal cause gas stripping and to upwelling, and peritropous A district is to katabatic drainage again after entering the mixing zone, top and mixing, and A district dissolved oxygen is controlled at 0.35mg/L, carries out denitrification denitrogenation; The mixed solution gravity flow of A/O recirculation reactor 3 enters MBR membrane cisterna 6 and carries out solid-liquid separation.MBR membrane cisterna 6 is provided with membrane module 7, centrifugal water pump 9 and sludge reflux pump 8.MBR membrane cisterna 6 intermittent aerations, intermittently water outlet, water outlet is done the make up water utilization as reclaimed water reuse to recirculating cooling water system, and mud is sent A/O recirculation reactor 3 back to by sludge reflux pump 8; Excess sludge is promoted to plate-and-frame filter press 11 by sludge pump 10, and dewatered sludge returns the sludge heat drying machine.The sludge concentration general control of A/O recirculation reactor 3 is at 6000mg/L.The A/O recirculation reactor is divided into several A districts and O district.O establishes boring aeration pipe in the district, because the gas stripping mixed solution upwards flows, forms the up-flow district; Mixed solution proportion flows downward greater than the O district in the A district, forms to fall the stream district, forms thus the reactor internal recycle; Reactor arranges multipoint water feeding, discharging device; The reactor top and the bottom all arrange the mixing zone, finish short distance nitration and denitrifying dual-use function in same reactor; Reactor is intake continuously, continuous effluent.
The above only is preferred embodiment of the present utility model, and non-in order to limit claim of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to claim of the present utility model.
Claims (5)
1. the device that the sludge heat drying reusing sewage is processed is characterized in that: comprise A/O recirculation reactor, MBR membrane cisterna, plate-and-frame filter press; Described A/O recirculation reactor arranges an A district and O district at least, O arranges boring aeration pipe in the district, described A district is connected to the MBR membrane cisterna, described MBR membrane cisterna comprises inner membrane module, aeration tube and outside centrifugal water pump, described centrifugal water pump links to each other with membrane module, and described MBR membrane cisterna is connected to plate-and-frame filter press by sludge pump.
2. the device processed of a kind of sludge heat drying reusing sewage according to claim 1 is characterized in that: the boring aeration pipe of described A/O recirculation reactor is connected aeration tube and all is connected with external gas blower with the MBR membrane cisterna, this gas blower is roots blower.
3. the device processed of a kind of sludge heat drying reusing sewage according to claim 1, it is characterized in that: described A/O recirculation reactor arranges the water inlet of at least one place, discharging device; A/O recirculation reactor top and the bottom all arrange the mixing zone.
4. the device processed of a kind of sludge heat drying reusing sewage according to claim 1, it is characterized in that: also include equalizing tank, described equalizing tank is connected to the A/O recirculation reactor by sewage pump.
5. the device of a kind of sludge heat drying reusing sewage processing according to claim 1 is characterized in that: also be provided with sludge reflux pump between described MBR membrane cisterna and the A/O recirculation reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220419607 CN202849201U (en) | 2012-08-23 | 2012-08-23 | Sludge heat drying sewage reuse device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220419607 CN202849201U (en) | 2012-08-23 | 2012-08-23 | Sludge heat drying sewage reuse device |
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| Publication Number | Publication Date |
|---|---|
| CN202849201U true CN202849201U (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220419607 Expired - Fee Related CN202849201U (en) | 2012-08-23 | 2012-08-23 | Sludge heat drying sewage reuse device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826654A (en) * | 2012-08-23 | 2012-12-19 | 天通新环境技术有限公司 | Device and method for recovery treatment on sewage obtained by sludge heat drying |
| CN111892236A (en) * | 2020-06-29 | 2020-11-06 | 浙江浙能嘉华发电有限公司 | Method and equipment for treating coal-fired sludge coupling wastewater and desulfurization wastewater of thermal power plant |
-
2012
- 2012-08-23 CN CN 201220419607 patent/CN202849201U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826654A (en) * | 2012-08-23 | 2012-12-19 | 天通新环境技术有限公司 | Device and method for recovery treatment on sewage obtained by sludge heat drying |
| CN111892236A (en) * | 2020-06-29 | 2020-11-06 | 浙江浙能嘉华发电有限公司 | Method and equipment for treating coal-fired sludge coupling wastewater and desulfurization wastewater of thermal power plant |
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Granted publication date: 20130403 Termination date: 20160823 |