CN103508640A - 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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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 combination submerged biologic packing material bed and the wastewater treatment of earthworm and ecological filter and device and the method for wastewater treatment thereof of mud decrement stabilization.
Background technology
In recent years, develop rapidly along with China's economy, biotope and livestock industry cultivation factory quantity are increased sharply, produce thus a large amount of lives and livestock breeding wastewater, brought certain negative impact to the environment of depending on for existence, such as causing the multifarious problems such as lake, He Pinxian river eutrophication that sharply decline of water ecosystem, be therefore badly in need of building the Waste Water Treatment that is applicable to independent living quarters or livestock and poultry cultivation sewage feature.Organism and the nutritive substance how efficiently to remove wherein become the important topic that researcher faces.The small-scale Sewage Disposal Craft that development in recent years is got up, according to the difference of processing mode, be divided into two classes: a kind of is traditional sewage treatmentmethod, comprise A/O technique, biological contact oxidation process etc., this class 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 that shortcoming is floor space is large, capital cost is relatively high.
In sewage disposal operational process, can produce a large amount of excess sludges, the heavy metal existing in mud, pathogenic bacteria and organic pollutant, bring harm to the mankind's productive life.Traditional sludge treatment disposal options has landfill, soil utilization and burning, and aforesaid method is simple and easy to do, but landfill site selection or move improper can polluted underground water environment, soil utilization meeting produces environmental perturbation to soil around, burns high cost; The new technology of reporting in document is utilized microorganism, ultrasonic wave or ionizing rays disposing sludge, and above-mentioned technology is to the minimizing of mud and innoxious playing 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, imperative to waste water and the efficient integral system of processing of mud.BAF and earthworm and ecological filter are the sewage treatment process that development in recent years is got up, compare two techniques with conventional activated sludge process and have that organic loading is high, floor space is little, reduced investment and can not produce the advantages such as sludge bulking, a rear technology also can, by the synergy of microorganism and earthworm, realize minimizing and the stabilization of mud simultaneously in sewage disposal.Through the retrieval of prior art is found, the existing technology of utilizing biological aerated filter sewage treatment provides a kind of method of integrated aeration boilogical filter tank advanced nitrogen as Chinese invention patent (publication number CN102963981A), whole device is comprised 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 consists 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 wood pad Worm biological filter tank and processes the method for villages and small towns excess sludge, from the excess sludge in the secondary sedimentation after biological reaction tank, enter in sludge conditioning pond after dilution, by peristaltic pump, pump into taper water distributor, after being uniformly distributed, enter filter bed reactor, through Eisenia foetida ingest digestion and the effect such as microorganism decomposition, realize minimizing and the stabilization treatment of excess sludge; The physiological microbe-earthworm filter pool system for treating household of sanitary sewage (Chinese invention patent publication number CN1320568A) is comprised of grid, aerated grit chamber, microbe-earthworm filter tank and water-distributing device, this device can not stop up under productivity condition in long-term non-stop run, can not produce secondary pollution, excess sludge generation is few.
There is in actual applications following limitation and deficiency in above-mentioned two kinds of technology:
1. after BAF long-play, the suspended solids in sewage easily stops up filtrate and causes head loss and clearance decline, need regular back flushing to guarantee normal operation, complex management and running cost are higher, the sludge reduction and the innoxious DeGrain that in sewage treatment process, produce simultaneously;
2. particularly nitrogen removal rate is lower to nutritive substance in sewage for single earthworm and ecological filter, affects effluent quality;
3. the combination process of BAF or earthworm and ecological filter and other technology exists running cost higher, and some floor space is large, and integrated technology, only for sewage or mud, is failed to both efficiently processing simultaneously.
Summary of the invention
1. the technical problem that will solve
For various existing lives or the small-sized treatment system of livestock breeding wastewater can not have that running cost is cheap concurrently, sewage and the efficient problem of processing of mud, 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, realized that floor space is little, economic operating cost, the object efficiently removing organism and nutritive substance in sewage and reduce 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 and the nutritive substance in sewage, be equipped with suitable operation process and reach the efficient object of utilizing of filtrate; By earthworm behavior and self vital movement feature, in the time of lifting sewage treatment effect, mud decrement stabilization is played a significant role simultaneously.
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 and gathers district, and the bottom that upper strata mud gathers district is provided with mud valve No. one; Described earthworm and ecological filter be positioned at described upper strata mud gather district under, the bottom of earthworm and ecological filter is provided with lower floor's mud and gathers district, the bottom that lower floor's mud gathers district is provided with mud valve No. two;
Described submerged biologic packing material Chuan top is provided with flow deflector, and the periphery of submerged biologic packing material bed is provided with settling region, between described settling region and flow deflector, is provided with reflux pump, and bottom, settling region is gathered district with described upper strata mud and is communicated with; Described submerged biologic packing material bed comprises and being 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 rotates under can driving in the rotating shaft of described rotating machine in horizontal plane, and the bottom of support is provided with the aeration scatterer being connected with gas blower; Filtrate in described earthworm and ecological filter is earthworm and ecological filter filtrate and pebbles from top to bottom, and district is gathered for lower floor's mud in the filtrate of earthworm and ecological filter below;
It also comprises communicating pipe and water distributor, and described water distributor gathers between district and described earthworm and ecological filter at described upper strata mud, the described settling region of access, the upper end of described communicating pipe, and 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 the filtrate bottom of described earthworm and ecological filter.
And a method of wastewater treatment for the device of 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 along flow deflector by water inlet pipe, and rotating machine drives support to rotate, and utilizes gas blower to pass through 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 further processes, and the sewage after processing is discharged by rising pipe;
(3) mud that settling region produces gathers district at upper strata mud and collects, open No. one mud valve, mud enters earthworm and ecological filter surface, and mud is pooled to lower floor's mud and gathers district after earthworm and ecological filter is processed, and the mud after final processing is discharged by No. two mud valves.
Preferably, 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, 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 is added density: every liter of filler adds 10.0～15.0g earthworm.
3. beneficial effect
Than prior art, the invention has the advantages that:
(1) the present invention proposes wastewater treatment 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, realized the efficient removal of organism and nutritive substance in waste water;
(2) apparatus and method of the present invention utilize sewage backflow to supplement the carbon source in water inlet, increased the catalytic time of sewage and filler, above-mentioned measure has guaranteed 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 below upper and lower two bed devices, be provided with respectively mud and gather district, regular spoil disposal, earthworm in mud Neng Bei lower floor earthworm and ecological filter that submerged biologic packing material bed produces is utilized, strengthen sludge treatment ability, strengthened 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 backwashing equipment and special sludge treatment structures are set, capital construction cost and running cost are low, overcome the problem that causes clearance to decline because of head loss after 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 gathers district; 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 mud gathers district; 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 earthworm and ecological filter 15 tops by bracing frame 21, submerged biologic packing material bed 4 is cylindrical, high 1m, diameter 1.1m, the upper strata mud that the bottom of submerged biologic packing material bed 4 and earthworm and ecological filter 15 is respectively arranged with taper gathers district 12He lower floor mud and gathers district 19.
Submerged biologic packing material bed 4 tops arrange flow deflector 2, and periphery arranges settling region 7, between settling region 7 and flow deflector 2, reflux pump 10 are installed; Submerged biologic packing material bed 4 inside are embedded with establishes horizontal layer support 5, and suspension type filler 6 hangs on support 5, and support 5 upper ends are provided with rotating machine 3, and gas blower 8 and aeration scatterer 9 are installed in the bottom of support 5; The bottom that upper strata mud gathers district 12 be provided with 13, numbers mud valves 13 of a mud valve be positioned at earthworm and ecological filter 15 directly over 10cm place.
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 ends, and communicating pipe 11 connects the water distributor 14 of settling region 7 and earthworm and ecological filter 15 tops, and rising pipe 22 is installed in earthworm and ecological filter 15 bottoms; 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 is added density)/L(filler), lower floor's mud gathers 19 bottoms, district mud valve 20 is set No. two.
Above-mentioned suspension type filler 6 is selected commercial semi soft packing, 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 gather district 12, lower floor mud and gather district 19, water distributor 14, rising pipe 22, and submerged biologic packing material bed 4 and earthworm and ecological filter 15 agent structures are made with PVC material.
This running situation: be 2.6L/min at water inlet flow velocity, organic loading is 3.0g COD/m
2under the condition of d, intake, first close a mud valve 13 and No. two mud valves 20, 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 9 pairs of sewage oxygenations of aeration scatterer, guarantees that dissolved oxygen concentration is within the scope of 4.0～5.0mg/L; Submerged biologic packing material bed 4 sewage overflows enter 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 further processes, sewage total residence time is 1.0h, and the sewage after above-mentioned stream oriented device is processed is discharged by total rising pipe 22.The mud that settling region 7 produces gathers district 12 at upper strata mud and collects, every 14 days, open a mud valve 13, mud enters earthworm and ecological filter 15 surfaces and is utilized by earthworm, mud is pooled to lower floor's mud and gathers district 19 after earthworm and ecological filter 15 is processed, and the mud after final processing is discharged by No. two mud valves 20.
This system is moved March continuously, every 7 days, effluent quality and sludge quantity are monitored, primary study organism and nutritive substance go out water concentration and clearance, community life sewage is after this system is processed, 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 mud valve and No. two mud valve mud TSS and VSS concentration simultaneously, calculate sludge degradation rate after earthworm and ecological filter is processed, TSS and VSS degradation rate variation range are respectively 21～35 and 30～48%, have improved sludge reduction and stabilization effect.
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: Dui Mou plant waste water is processed
As Fig. 1, submerged biologic packing material bed 4 is erected at earthworm and ecological filter 15 tops 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 and gathers district 12He lower floor mud and gather district 19; Submerged biologic packing material bed 4 tops arrange flow deflector 2, and periphery arranges settling region 7, between settling region 7 and flow deflector 2, reflux pump 10 are installed; Submerged biologic packing material bed 4 inside are embedded with horizontal layer support 5, and suspension type filler 6 hangs on support 5, and support 5 upper ends are provided with rotating machine 3, and gas blower 8 and aeration scatterer 9 are installed in the bottom of support 5; The bottom that upper strata mud gathers district 12 be provided with 13, numbers mud valves 13 of a mud valve be positioned at earthworm and ecological filter 15 directly over 15cm place; Submerged biologic packing material bed 4 also comprises communicating pipe 11 and water inlet pipe 1, and communicating pipe 11 connects the water distributor 14 of settling region 7 and earthworm and ecological filter 15 tops, and water inlet pipe 1 is arranged on submerged biologic packing material bed 4 upper ends, and rising pipe 22 is installed in earthworm and ecological filter 15 bottoms; 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 is added density)/L(filler), lower floor's mud gathers 19 bottoms, district mud valve 20 is set No. two.
Suspension type filler 6 is selected commercial associativity filler, 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 gather district 12, lower floor mud and gather district 19, water distributor 14, rising pipe 22, and submerged biologic packing material bed 4 and earthworm and ecological filter 15 agent structures are made with PVC material.
Running situation: be 3.4L/min at water inlet flow velocity, organic loading is 5.1g COD/m
2under the condition of d, intake, first close a mud valve 13 and No. two mud valves 20, 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 9 pairs of sewage oxygenations of aeration scatterer, guarantees that dissolved oxygen concentration is within the scope of 4.0～5.0mg/L; Submerged biologic packing material bed 4 sewage overflows enter 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 further processes, sewage total residence time is 0.8h, and the sewage after above-mentioned stream oriented device is processed is discharged by total rising pipe 22.The mud that settling region 7 produces gathers district 12 at upper strata mud and collects, every 7 days, open a mud valve 13, mud enters earthworm and ecological filter 15 surfaces and is utilized by earthworm, mud is pooled to lower floor's mud and gathers district 19 after earthworm and ecological filter 15 is processed, and the mud after final processing is discharged by No. two mud valves 20.
This system is moved March continuously, week about water quality is monitored, result of study shows, in plant's waste water, organism and nutritive substance all have higher removal effect (as table 2), simultaneously after earthworm and ecological filter is processed, mud TSS and VSS clearance are on average stabilized in respectively 24 ± 3.6% and 36 ± 5.7%, and to sewage and mud efficient processing simultaneously, technical have a clear superiority.
The water inlet of table 2 embodiment 2 Zhong Mou plant waste water and effluent quality test index situation
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 and gathers district (12), and the bottom that upper strata mud gathers district (12) is provided with a mud valve (13); Described earthworm and ecological filter (15) be positioned at described upper strata mud gather district (12) under, the bottom of earthworm and ecological filter (15) is provided with lower floor's mud and gathers district (19), and the bottom that lower floor's mud gathers district (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), between described settling region (7) and flow deflector (2), be provided with reflux pump (10), settling region (7) bottom is gathered district (12) with described upper strata mud and is communicated with; Described submerged biologic packing material bed (4) comprises and being embedded at the inner passive horizontal layer support of submerged biologic packing material bed (4) (5), 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) rotates under can driving in the rotating shaft of described rotating machine (3) in horizontal plane, and the bottom of support (5) is provided with the aeration scatterer (9) being connected with gas blower (8); Filtrate in described earthworm and ecological filter (15) be earthworm and ecological filter filtrate (17) and pebbles (18) from top to bottom, below the filtrate of earthworm and ecological filter (15) for lower floor's mud gathers district (19);
It also comprises communicating pipe (11) and water distributor (14), described water distributor (14) is positioned at described upper strata mud and gathers between district (12) and described earthworm and ecological filter (15), the described settling region (7) of access, upper end of described communicating pipe (11), lower end is connected with the water-in of water distributor (14).
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 the filtrate bottom 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) build device claimed in claim 2, close a mud valve (13) and No. two mud valves (20), sewage enters in submerged biologic packing material bed (4) along flow deflector (2) by water inlet pipe (1), rotating machine (3) drives support (5) to rotate, and utilizes gas blower (8) to pass through 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 further processes, and the sewage after processing is discharged by rising pipe (22);
(3) mud that settling region (7) produce gathers district (12) at upper strata mud and collects, open a mud valve (13), mud enters earthworm and ecological filter (15) surface, mud is pooled to lower floor's mud and gathers district (19) after earthworm and ecological filter (15) is processed, and the mud after final processing 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. according to the method for wastewater treatment of the device of a kind of wastewater treatment described in claim 3 or 4 and 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 is added density: every liter of filler adds 10.0～15.0g earthworm.
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| 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 |
| CN108892340A (en) * | 2018-07-04 | 2018-11-27 | 浙江工商大学 | The vertical water earthworm sludge decrement reactor of double rotary vertically and its method |
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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 |
| CN105314797A (en) * | 2015-11-23 | 2016-02-10 | 上海应用技术学院 | Bacterial earthworm filter for synchronous treatment of sewage and sludge and application thereof |
| 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 |
| CN108892340A (en) * | 2018-07-04 | 2018-11-27 | 浙江工商大学 | The vertical water earthworm sludge decrement reactor of double rotary vertically and its method |
| CN108892340B (en) * | 2018-07-04 | 2023-04-25 | 浙江工商大学 | Double-rotation vertical tubificidae sludge reduction reactor and method thereof |
| CN112661269A (en) * | 2020-11-11 | 2021-04-16 | 江苏中车环保设备有限公司 | Landscape high-load biological filter system and sewage treatment method |
| CN113860678A (en) * | 2021-09-08 | 2021-12-31 | 兰州铁道设计院有限公司 | Integrated equipment and method for multi-module rapid treatment of oily sludge |
| 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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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 |