CN103508640B - Device for wastewater treatment and sludge reduction and stabilization and wastewater treatment method thereof - Google Patents
Device for wastewater treatment and sludge reduction and stabilization and wastewater treatment method thereof Download PDFInfo
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- CN103508640B CN103508640B CN201310514397.1A CN201310514397A CN103508640B CN 103508640 B CN103508640 B CN 103508640B CN 201310514397 A CN201310514397 A CN 201310514397A CN 103508640 B CN103508640 B CN 103508640B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The invention discloses a device for wastewater treatment and sludge reduction and stabilization and a wastewater treatment method thereof, and belongs to the field of equipment and methods for sewage treatment. The device comprises a submerged biological packed bed and an earthworm ecological filter, wherein the submerged biological packed bed is supported above the earthworm ecological filter through a support frame; an upper-layer sludge aggregation zone is arranged at the bottom of the submerged biological packed bed; a sludge valve No.1 is arranged at the bottom of the upper-layer sludge aggregation zone; the earthworm ecological filter is positioned under the upper-layer sludge aggregation zone; a lower-layer sludge aggregation zone is arranged at the bottom of the earthworm ecological filter; a sludge valve No.2 is arranged at the bottom of the lower-layer sludge aggregation zone. The device for wastewater treatment and sludge reduction and stabilization and the wastewater treatment method have the advantages that a two-stage structure of the submerged biological packed bed and the earthworm ecological filter is constructed to alternatively treat sewage, and under the premise of low operation cost, the efficient removal of organics and nutrient substances in wastewater is realized.
Description
Technical field
The invention belongs to the Apparatus and method for field of sewage disposal, more particularly, relate to a kind of in conjunction with submerged biologic packing material bed and the wastewater treatment of earthworm and ecological filter and the device of mud decrement stabilization and method of wastewater treatment thereof.
Background technology
In recent years, along with the develop rapidly of China's economy, biotope and livestock breed aquatics factory quantity are increased sharply, produce a large amount of lives and livestock breeding wastewater thus, certain negative impact is brought to the environment of depending on for existence, such as cause the multifarious problems such as the river lake eutrophication existing with frequency that sharply decline of water ecosystem, be therefore badly in need of building the Waste Water Treatment being applicable to independent living quarters or livestock and poultry cultivation sewage feature.How efficiently remove organism wherein and nutritive substance and become the important topic that researcher faces.The small-scale Sewage Disposal Craft that development in recent years is got up, two classes are divided into: a kind of is traditional sewage treatmentmethod according to the difference of processing mode, comprise A/O technique, biological contact oxidation process etc., this kind of Process for Effluent is stable, capital cost is low, floor space is little, but working cost is higher, operational administrative is complicated; The second is land disposal method, such as artificial swamp, biological pond etc., and outlet effect is good, operational management is simple, working cost is low, but shortcoming to be floor space large, capital cost is relatively high.
A large amount of excess sludges can be produced in sewage disposal operational process, the heavy metal existed in mud, pathogenic bacteria and organic pollutant, harm is brought to the productive life of the mankind.Traditional specific resistance to filtration mode has landfill, Land_use change and burning, and aforesaid method is simple and easy to do, but landfill site selection or run improper can polluted underground water environment, Land_use change can produce environmental perturbation to the soil of surrounding, burns high cost; The new technology reported in document utilizes microorganism, ultrasonic wave or ionizing rays disposing sludge, and above-mentioned technology is to the minimizing of mud and innoxiously play a role, but running cost is too high, and some technology is also in the exploratory stage.
Manufacture management is simple, running cost is low, and the integral system efficiently processed waste water and mud is imperative.BAF and earthworm and ecological filter are the sewage treatment process that development in recent years is got up, compared with conventional activated sludge process two techniques have that organic loading is high, floor space is little, reduced investment and can not the advantages such as sludge bulking be produced, a rear technology also by the synergy of microorganism and earthworm, realizes minimizing and the stabilization of mud simultaneously in sewage disposal.Through finding the retrieval of prior art, having utilizes the technology of biological aerated filter sewage treatment such as Chinese invention patent (publication number CN102963981A) to provide a kind of method of integrated aeration boilogical filter tank advanced nitrogen, whole device is made up of water inlet system, integrated aeration boilogical filter tank, carbon source dosing system and back-purge system, and this system has higher clearance to the ammonia nitrogen in sewage and total nitrogen; Chinese invention patent: a kind of method for advanced treatment of wastewater reuse (publication number CN103172216A), the biochemical device of the BAF of employing is made up of water inlet pipe, backwash water inlet pipe, backwash inlet pipe, aeration tube, backwash water shoot, rising pipe, water distributor, support filler, ceramic filter material, pond body and filter plate.The retrieval of Worm biological filter tank is found, Chinese invention patent (publication number CN102674555A) relates to a kind of method of wood pad Worm biological filter tank and process villages and small towns excess sludge thereof, after entering in sludge conditioning pond dilution from the excess sludge in the secondary sedimentation after biological reaction tank, taper water distributor is pumped into by peristaltic pump, after being uniformly distributed, enter filter bed reactor, the effects such as digestion and the microbial decomposition of ingesting through Eisenia foetida, realize minimizing and the stabilization treatment of excess sludge; The physiological microbe-earthworm filter pool system for treating household (Chinese invention patent publication number CN1320568A) of sanitary sewage is made up of grid, aerated grit chamber, microbe-earthworm filter tank and water-distributing device, this device can not be able to block by long continuous operation under productivity condition, can not produce secondary pollution, excess sludge generation is few.
There is following limitation and deficiency in actual applications in above-mentioned two kinds of technology:
1. the suspended solids after BAF long-play in sewage easily blocks filtrate and causes head loss and clearance to decline, regular back flushing is needed to ensure normal operation, complex management and running cost is higher, the sludge reduction simultaneously produced in sewage treatment process and innoxious DeGrain;
2. particularly nitrogen removal rate is lower to sewage Middle nutrition material for single earthworm and ecological filter, affects effluent quality;
3. to there is running cost higher for the combination process of BAF or earthworm and ecological filter and other technology, and some floor space is large, and integrated technology is only for sewage or mud simultaneously, fails to both efficiently processing.
Summary of the invention
1. the technical problem that will solve
Can not have that running cost is cheap concurrently for various existing life or the small-sized treatment system of livestock breeding wastewater, problem that sewage and mud efficiently process, the invention provides device and the method for wastewater treatment thereof of a kind of wastewater treatment and mud decrement stabilization, give full play to filler and earthworm synergy mechanism, achieve that floor space is little, economic operating cost, efficiently remove dirty Organic substance in water and nutritive substance and reduce the object of mud harm.
2. technical scheme
Principle of the present invention: utilize the acting in conjunction of microbial function bacterium on submerged bacteria filter and earthworm and ecological filter filtrate and earthworm to remove organism in sewage and nutritive substance, is equipped with suitable operation process and reaches object to filtrate efficiency utilization; Simultaneously by earthworm behavior and its life active characteristics, while lifting sewage treatment effect, mud decrement stabilization is played a significant role.
Object of the present invention is achieved through the following technical solutions:
The device of a kind of wastewater treatment and mud decrement stabilization, it comprises submerged biologic packing material bed and earthworm and ecological filter, described submerged biologic packing material bed is undertaken on the top of described earthworm and ecological filter by bracing frame, the bottom of submerged biologic packing material bed is provided with upper strata mud Nesting Zone, and the bottom of upper strata mud Nesting Zone is provided with a mud valve; Described earthworm and ecological filter is positioned at immediately below the mud Nesting Zone of described upper strata, and the bottom of earthworm and ecological filter is provided with lower floor's mud Nesting Zone, and the bottom of lower floor's mud Nesting Zone is provided with No. two mud valves;
The top of described submerged biologic packing material bed is provided with flow deflector, and the periphery of submerged biologic packing material bed is provided with settling region, is provided with reflux pump between described settling region and flow deflector, is communicated with bottom settling region with described upper strata mud Nesting Zone; Described submerged biologic packing material bed comprises and is embedded at the inner passive horizontal layer support of submerged biologic packing material bed, suspension type filler hangs on support, the top center of submerged biologic packing material bed is provided with rotating machine, described support can at horizontal rotation in surface under the rotating shaft of described rotating machine drives, and the bottom of support is provided with the aeration scatterer be connected with gas blower; Filtrate in described earthworm and ecological filter is earthworm and ecological filter filtrate and pebbles from top to bottom, is lower floor's mud Nesting Zone below the filtrate of earthworm and ecological filter;
It also comprises communicating pipe and water distributor, and described water distributor is between described upper strata mud Nesting Zone and described earthworm and ecological filter, and the settling region described in the access of upper end of described communicating pipe, lower end is connected with the water-in of water distributor.
Preferably, this device also comprises water inlet pipe and rising pipe, and described water inlet pipe is arranged on submerged biologic packing material bed upper end, and described rising pipe is arranged on bottom the filtrate of described earthworm and ecological filter.
A method of wastewater treatment for the device of wastewater treatment and mud decrement stabilization, the steps include:
(1) build described device, close a mud valve and No. two mud valves, sewage enters in submerged biologic packing material bed by water inlet pipe along flow deflector, and rotating machine drives holder pivots, utilizes gas blower by aeration scatterer to sewage oxygenation simultaneously;
(2) sewage overflow after aeration enters settling region, sewage after precipitation flows into water distributor by communicating pipe, a part of settling region sewage enters submerged biologic packing material bed by reflux pump again along flow deflector simultaneously, sewage enters earthworm and ecological filter and processes further, and the sewage after process is discharged by rising pipe;
(3) mud that settling region produces collects at upper strata mud Nesting Zone, open a mud valve, mud enters earthworm and ecological filter surface, and mud is pooled to lower floor's mud Nesting Zone after earthworm and ecological filter process, and the mud after final process is discharged by No. two mud valves.
Preferably, organic loading of intaking is 1 ~ 6g COD/m
2d, water inlet flow velocity is 0.8 ~ 6.2L/min, in submerged biologic packing material bed, the support speed of rotation of hanging filler is 2 ~ 5 circles/min, and in submerged biologic packing material bed, dissolved oxygen concentration scope is 4.0 ~ 5.0mg/L, and the ratio that the sewage backflow amount of reflux pump accounts for flooding quantity is 50% ~ 100%.
Preferably, the hydraulic detention time of described device is 0.5 ~ 1.5h, and sludge discharging period is 7 ~ 15 days, and earthworm adds density: often liter of filler adds 10.0 ~ 15.0g earthworm.
3. beneficial effect
Compared to prior art, the invention has the advantages that:
(1) wastewater treatment that proposes of the present invention and mud decrement gasifying device and method of wastewater treatment thereof, structure submerged biologic packing material bed and earthworm and ecological filter two-layer configuration, carry out the alternate run of sewage, under low operating cost prerequisite, achieve the efficient removal of useless Organic substance in water and nutritive substance;
(2) apparatus and method of the present invention utilize sewage backflow to supplement into the carbon source in water, add sewage and filler catalytic time, above-mentioned measure ensure that enough carbon sources carry out denitrification denitrogenation, and the total nitrogen in waste water is processed more fully;
(3) the present invention is provided with upper and lower two bed devices, and be provided with mud Nesting Zone respectively in the below of upper and lower two bed devices, regular spoil disposal, the mud that submerged biologic packing material bed is produced can be utilized by earthworm in lower floor's earthworm and ecological filter, enhance sludge treatment ability, enhance sludge reduction and stabilization effect;
(4) method of wastewater treatment of a kind of wastewater treatment provided by the present invention and mud decrement stabilizing device, without the need to arranging backwashing equipment and special sludge treatment structures, capital construction cost and running cost low, because of problem that head loss causes clearance to decline after overcoming common BAF long-play, especially be applicable to small-sized residential district sanitary sewage and livestock and poultry cultivation sewage disposal on a small scale, there is larger market outlook and application value.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1, water inlet pipe; 2, flow deflector; 3, rotating machine; 4, submerged biologic packing material bed; 5, support; 6, suspension type filler; 7, settling region; 8, gas blower; 9, aeration scatterer; 10, reflux pump; 11, communicating pipe; 12, upper strata mud Nesting Zone; 13, a mud valve; 14, water distributor; 15, earthworm and ecological filter; 16, earthworm; 17, earthworm and ecological filter filtrate; 18, pebbles; 19, lower floor's mud Nesting Zone; 20, No. two mud valves; 21, bracing frame; 22, rising pipe.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
Embodiment 1: certain community life sewage is processed
As Fig. 1, submerged biologic packing material bed 4 is erected at above earthworm and ecological filter 15 by bracing frame 21, submerged biologic packing material bed 4 is cylindrical, high 1m, diameter 1.1m, the bottom of submerged biologic packing material bed 4 and earthworm and ecological filter 15 is respectively arranged with upper strata mud Nesting Zone 12 and lower floor's mud Nesting Zone 19 of taper.
Submerged biologic packing material bed 4 top arranges flow deflector 2, and periphery arranges settling region 7, is provided with reflux pump 10 between settling region 7 and flow deflector 2; Submerged biologic packing material bed 4 inside is embedded with establishes horizontal layer support 5, and suspension type filler 6 hangs on support 5, and support 5 upper end is provided with rotating machine 3, and gas blower 8 and aeration scatterer 9 are installed in the bottom of support 5; The bottom of upper strata mud Nesting Zone 12 is provided with a mud valve 13, mud valve 13 and is positioned at 10cm place directly over earthworm and ecological filter 15.
Submerged biologic packing material bed 4 also comprises communicating pipe 11 and water inlet pipe 1.Water inlet pipe 1 is arranged on submerged biologic packing material bed 4 upper end, connects the water distributor 14 above settling region 7 and earthworm and ecological filter 15 communicating pipe 11, installs rising pipe 22 bottom earthworm and ecological filter 15; Filtrate in earthworm and ecological filter 15 is earthworm and ecological filter filtrate 17 and pebbles 18 from top to bottom, highly be respectively 60cm and 8cm, it is 11.3g(earthworm that earthworm (Eisenia foetida) 16 adds density)/L(filler), No. two mud valves 20 are set bottom lower floor's mud Nesting Zone 19.
Commercial semi soft packing selected by above-mentioned suspension type filler 6, and bed of packings medium porosity and volume are respectively 99% and 1.12ml/g; Water inlet pipe 1, flow deflector 2, communicating pipe 11, settling region 7, upper strata mud Nesting Zone 12, lower floor's mud Nesting Zone 19, water distributor 14, rising pipe 22, and submerged biologic packing material bed 4 and earthworm and ecological filter 15 agent structure PVC material are made.
This running situation: flow velocity is 2.6L/min intaking, and organic loading is 3.0g COD/m
2intake under the condition of d, first a mud valve 13 and No. two mud valves 20 are closed, sewage enters submerged biologic packing material bed 4 by water inlet pipe 1 along flow deflector 2, rotating machine 3 drives bed of packings stainless steel stent 5 to rotate, slewing rate is 2 circles/min, gas blower 8, by the 9 pairs of sewage oxygenations of aeration scatterer, ensures that dissolved oxygen concentration is within the scope of 4.0 ~ 5.0mg/L; Submerged biologic packing material bed 4 sewage overflow enters settling region 7, sewage after precipitation flows into water distributor 14 by communicating pipe 11, open reflux pump 10 simultaneously and carry out effluent cycle utilization, sewage backflow amount accounts for 90% of flooding quantity, sewage enters earthworm and ecological filter 15 and processes further, sewage total residence time is 1.0h, and the sewage after above-mentioned stream oriented device process is discharged by total rising pipe 22.The mud that settling region 7 produces collects at upper strata mud Nesting Zone 12, a mud valve 13 is opened every 14 days, mud enters earthworm and ecological filter 15 surface and is utilized by earthworm, mud is pooled to lower floor's mud Nesting Zone 19 after earthworm and ecological filter 15 processes, and the mud after final process is discharged by No. two mud valves 20.
This system runs March continuously, every 7 days, effluent quality and sludge quantity are monitored, the aqueous concentration of primary study organism and nutritive substance and clearance, community life sewage is after this system process, COD in water outlet, ammonia nitrogen, total nitrogen and total tp removal rate variation range be respectively 80 ~ 86,94 ~ 99%, 80 ~ 86% and 99%(as table 1), there is higher organism and nutritive substance clearance; Measure a mud valve and No. two mud valve mud TSS and VSS concentration, calculate sludge degradation rate after earthworm and ecological filter process, TSS and VSS degradation rate variation range is 21 ~ 35 and 30 ~ 48% respectively, improves sludge reduction and stabilization effect simultaneously.
The water inlet of certain community life sewage and effluent quality test index situation in table 1 embodiment 1
| Test index | COD(mg/L) | NH 3-N(mg/L) | TN(mg/L) | TP(mg/L) |
| Water inlet | 130～320 | 25.2～53.1 | 27.1～68.9 | 2.33～6.45 |
| Total water outlet | 26.2～45.1 | 1.2～3.1 | 4.8～9.6 | 0.01～0.03 |
| Clearance (%) | 80～86 | 94～99 | 80～86 | 99 |
Embodiment 2: certain animal farm wastewater is processed
As Fig. 1, submerged biologic packing material bed 4 is erected at above earthworm and ecological filter 15 by bracing frame 21, submerged biologic packing material bed 4 is cylindrical, high 0.9m, diameter 1.0m, the bottom of submerged biologic packing material bed 4 and earthworm and ecological filter 15 is respectively arranged with taper upper strata mud Nesting Zone 12 and lower floor's mud Nesting Zone 19; Submerged biologic packing material bed 4 top arranges flow deflector 2, and periphery arranges settling region 7, installs reflux pump 10 between settling region 7 and flow deflector 2; Submerged biologic packing material bed 4 inside is embedded with horizontal layer support 5, and suspension type filler 6 hangs on support 5, and support 5 upper end is provided with rotating machine 3, and gas blower 8 and aeration scatterer 9 are installed in the bottom of support 5; The bottom of upper strata mud Nesting Zone 12 is provided with a mud valve 13, mud valve 13 and is positioned at 15cm place directly over earthworm and ecological filter 15; Submerged biologic packing material bed 4 also comprises communicating pipe 11 and water inlet pipe 1, connects the water distributor 14 above settling region 7 and earthworm and ecological filter 15 communicating pipe 11, and water inlet pipe 1 is arranged on submerged biologic packing material bed 4 upper end, installs rising pipe 22 bottom earthworm and ecological filter 15; Filtrate in earthworm and ecological filter 15 is earthworm and ecological filter filtrate 17 and pebbles 18 from top to bottom, highly be respectively 50cm and 5cm, it is 12.5g(earthworm that earthworm (Eisenia foetida) 16 adds density)/L(filler), No. two mud valves 20 are set bottom lower floor's mud Nesting Zone 19.
Commercial associativity filler selected by suspension type filler 6, and bed of packings medium porosity and volume are respectively 99.3% and 1.08ml/g; Water inlet pipe 1, flow deflector 2, communicating pipe 11, settling region 7, upper strata mud Nesting Zone 12, lower floor's mud Nesting Zone 19, water distributor 14, rising pipe 22, and submerged biologic packing material bed 4 and earthworm and ecological filter 15 agent structure PVC material are made.
Running situation: flow velocity is 3.4L/min intaking, and organic loading is 5.1g COD/m
2intake under the condition of d, first a mud valve 13 and No. two mud valves 20 are closed, sewage enters submerged biologic packing material bed 4 by water inlet pipe 1 along flow deflector 2, rotating machine 3 drives bed of packings stainless steel stent 5 to rotate, slewing rate is 5 circles/min, gas blower 8, by the 9 pairs of sewage oxygenations of aeration scatterer, ensures that dissolved oxygen concentration is within the scope of 4.0 ~ 5.0mg/L; Submerged biologic packing material bed 4 sewage overflow enters settling region 7, sewage after precipitation flows into water distributor 14 by communicating pipe 11, open reflux pump 10 simultaneously and carry out effluent cycle utilization, sewage backflow amount accounts for 80% of flooding quantity, sewage enters earthworm and ecological filter 15 and processes further, sewage total residence time is 0.8h, and the sewage after above-mentioned stream oriented device process is discharged by total rising pipe 22.The mud that settling region 7 produces collects at upper strata mud Nesting Zone 12, a mud valve 13 is opened every 7 days, mud enters earthworm and ecological filter 15 surface and is utilized by earthworm, mud is pooled to lower floor's mud Nesting Zone 19 after earthworm and ecological filter 15 processes, and the mud after final process is discharged by No. two mud valves 20.
This system runs March continuously, week about water quality is monitored, result of study shows, in animal farm wastewater, organism and nutritive substance all have higher removal effect (as table 2), simultaneously after earthworm and ecological filter process, mud TSS and VSS clearance are on average stabilized in 24 ± 3.6% and 36 ± 5.7% respectively, to sewage and mud efficient process simultaneously, technically have clear superiority.
The water inlet of certain animal farm wastewater and effluent quality test index situation in table 2 embodiment 2
Claims (5)
1. the device of a wastewater treatment and mud decrement stabilization, it is characterized in that, it comprises submerged biologic packing material bed (4) and earthworm and ecological filter (15), described submerged biologic packing material bed (4) is undertaken on the top of described earthworm and ecological filter (15) by bracing frame (21), the bottom of submerged biologic packing material bed (4) is provided with upper strata mud Nesting Zone (12), and the bottom on upper strata mud Nesting Zone (12) is provided with a mud valve (13); Described earthworm and ecological filter (15) is positioned at immediately below described upper strata mud Nesting Zone (12), the bottom of earthworm and ecological filter (15) is provided with lower floor's mud Nesting Zone (19), and the bottom of lower floor's mud Nesting Zone (19) is provided with No. two mud valves (20);
The top of described submerged biologic packing material bed (4) is provided with flow deflector (2), the periphery of submerged biologic packing material bed (4) is provided with settling region (7), be provided with reflux pump (10) between described settling region (7) and flow deflector (2), settling region (7) bottom is communicated with described upper strata mud Nesting Zone (12); Described submerged biologic packing material bed (4) comprises and is embedded the inner passive horizontal layer support (5) of submerged biologic packing material bed (4), suspension type filler (6) hangs on support (5), the top center of submerged biologic packing material bed (4) is provided with rotating machine (3), described support (5) can at horizontal rotation in surface under the rotating shaft of described rotating machine (3) drives, and the bottom of support (5) is provided with the aeration scatterer (9) be connected with gas blower (8); Filtrate in described earthworm and ecological filter (15) is earthworm and ecological filter filtrate (17) and pebbles (18) from top to bottom, is lower floor's mud Nesting Zone (19) below the filtrate of earthworm and ecological filter (15);
It also comprises communicating pipe (11) and water distributor (14), described water distributor (14) is positioned between described upper strata mud Nesting Zone (12) and described earthworm and ecological filter (15), the settling region (7) described in the access of upper end of described communicating pipe (11), lower end is connected with the water-in of water distributor (14);
Wherein, submerged biologic packing material bed (4) and earthworm and ecological filter (15) agent structure PVC material are made.
2. the device of a kind of wastewater treatment according to claim 1 and mud decrement stabilization, it is characterized in that, this device also comprises water inlet pipe (1) and rising pipe (22), described water inlet pipe (1) is arranged on submerged biologic packing material bed (4) upper end, and described rising pipe (22) is arranged on bottom the filtrate of described earthworm and ecological filter (15).
3. a method of wastewater treatment for the device of wastewater treatment and mud decrement stabilization, the steps include:
(1) device according to claim 2 is built, close a mud valve (13) and No. two mud valves (20), sewage enters in submerged biologic packing material bed (4) by water inlet pipe (1) along flow deflector (2), rotating machine (3) drives support (5) to rotate, and utilizes gas blower (8) by aeration scatterer (9) to sewage oxygenation simultaneously;
(2) sewage overflow after aeration enters settling region (7), sewage after precipitation flows into water distributor (14) by communicating pipe (11), a part of settling region (7) sewage enters submerged biologic packing material bed (4) by reflux pump (10) again along flow deflector (2) simultaneously, sewage enters earthworm and ecological filter (15) and processes further, and the sewage after process is discharged by rising pipe (22);
(3) mud that settling region (7) produce collects on upper strata mud Nesting Zone (12), open a mud valve (13), mud enters earthworm and ecological filter (15) surface, mud is pooled to lower floor's mud Nesting Zone (19) after earthworm and ecological filter (15) process, and the mud after final process is discharged by No. two mud valves (20).
4. the method for wastewater treatment of the device of a kind of wastewater treatment according to claim 3 and mud decrement stabilization, is characterized in that, water inlet organic loading is 1 ~ 6g COD/m
2d, water inlet flow velocity is 0.8 ~ 6.2L/min, in submerged biologic packing material bed (4), support (5) speed of rotation of hanging filler is 2 ~ 5 circles/min, the interior dissolved oxygen concentration scope of submerged biologic packing material bed (4) is 4.0 ~ 5.0mg/L, and the ratio that the sewage backflow amount of reflux pump (10) accounts for flooding quantity is 50% ~ 100%.
5. the method for wastewater treatment of a kind of wastewater treatment according to claim 3 or 4 and the device of mud decrement stabilization, it is characterized in that, the hydraulic detention time of described device is 0.5 ~ 1.5h, and sludge discharging period is 7 ~ 15 days, and earthworm adds density: often liter of filler adds 10.0 ~ 15.0g earthworm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105300749B (en) * | 2014-06-09 | 2018-02-27 | 鞍钢股份有限公司 | Pretreatment device and method for detecting chemical oxygen demand of wastewater |
| CN105314797B (en) * | 2015-11-23 | 2018-01-26 | 上海应用技术学院 | A kind of Worm biological filter tank of sewage sludge synchronization process and its application |
| CN105347631A (en) * | 2015-12-16 | 2016-02-24 | 苏州捷宁模塑有限公司 | Filling material for yellow phosphorus production wastewater purification tanks |
| CN105834199A (en) * | 2016-05-19 | 2016-08-10 | 环境保护部南京环境科学研究所 | Device and method for earthworms to digest kitchen waste |
| CN108892340B (en) * | 2018-07-04 | 2023-04-25 | 浙江工商大学 | Double-rotation vertical tubificidae sludge reduction reactor and method thereof |
| CN112661269B (en) * | 2020-11-11 | 2023-03-10 | 江苏中车华腾环保科技有限公司 | Landscape high-load biological filter system and sewage treatment method |
| CN113860678B (en) * | 2021-09-08 | 2023-08-29 | 兰州铁道设计院有限公司 | Integrated equipment and method for rapidly treating oily sludge through multiple modules |
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| CN203513446U (en) * | 2013-10-25 | 2014-04-02 | 环境保护部南京环境科学研究所 | Device for wastewater treatment and sludge reduction and stabilization |
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Effective date of registration: 20170927 Address after: Nangang District 150000 of Heilongjiang province Harbin City Road No. 52 Patentee after: Heilongjiang Prov. Water Conservancy and Hydropower Survey and Design Inst. Address before: Xuanwu District of Nanjing City, Jiangsu province 210042 Jiang Wang Temple Street No. 8 Patentee before: Ministry of Environmental Protection, Nanjing Environment Science Institute |
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Inventor after: Liang Zhentang Inventor after: Wang Haomin Inventor after: He Wenbo Inventor after: Liu Zhongren Inventor after: Gao Peng Inventor after: Sun Zhongyuan Inventor after: Wang Tianliang Inventor after: Wang Longmian Inventor after: Zhang Yimin Inventor before: Wang Longmian Inventor before: Zhang Yimin Inventor before: Yang Fei Inventor before: Chao Jianying Inventor before: Gao Yuexiang Inventor before: Zhang Yongdong |
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