CN103114036A - Hydraulic cyclone anaerobic digestion tower and using method thereof - Google Patents
Hydraulic cyclone anaerobic digestion tower and using method thereof Download PDFInfo
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- CN103114036A CN103114036A CN2012105471581A CN201210547158A CN103114036A CN 103114036 A CN103114036 A CN 103114036A CN 2012105471581 A CN2012105471581 A CN 2012105471581A CN 201210547158 A CN201210547158 A CN 201210547158A CN 103114036 A CN103114036 A CN 103114036A
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- anaerobic digestion
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- biogas
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- 230000029087 digestion Effects 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 30
- 239000002893 slag Substances 0.000 claims abstract description 28
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 230000007306 turnover Effects 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000010815 organic waste Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 abstract description 3
- -1 excrement Substances 0.000 abstract 1
- 239000010802 sludge Substances 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000013000 roll bending Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/24—Gas permeable parts
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
- C12M27/18—Flow directing inserts
- C12M27/24—Draft tube
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention discloses a hydraulic cyclone anaerobic digestion tower and a using method thereof. A flow guiding cylinder is arranged in the center of a tower body, a submersible motor is arranged at the middle part in the flow guiding cylinder, the lower part of the submersible motor is connected with a lifting impeller, the flow guiding cylinder is connected with two flow guiding tubes, a circle of annular flow stabilizing plates are arranged between the upper layer flow guiding tube and the tower body, a feeding tube which is used for communicating the external and the flow guiding cylinder is arranged at the bottom on the side wall of the tower body, a slag collection bucket is connected with the bottom of the tower body, the side surface of the slag collection bucket is connected with a slag discharge tube, and a biogas tube is arranged on a top cover of the tower body and is in signal connection with a pressure transmitter and an electric control box. According to the hydraulic cyclone anaerobic digestion tower disclosed by the invention, by utilizing a mode of a hydraulic cyclone, material stirring, scum crushing as well as raw and cooked material separation are realized, the anaerobic digestion treatment efficiency is improved, the biogas yield is increased, and the energy consumption of anaerobic digestion treatment is saved; and in addition, a changed intensity anaerobic digestion process is adopted according to the pressure of biogas, so that automatic running and regulation of a biogas production and utilization system can be realized. The hydraulic cyclone anaerobic digestion tower can be widely applied to anaerobic digestion treatment of high concentration organic wastes such as waste water, waste liquor, wastes, excrement, sludge and the like.
Description
Technical field
The present invention relates to a kind of organic waste treatment facility.
Background technology
At present, in, recycling treatment process innoxious at high density organic waste such as waste water, waste liquid, rubbish, ight soil, mud, often need anaerobic digestion process equipment, existing all kinds of anaerobic digestion equipment adopts mechanical stirring or biogas to stir more, but easily form the surface scum layer during this kind equipment work, can't distinguish raw material, grog, cause effluxing raw material large percentage in the slag of natural pond, in addition, traditional equipment work efficient is low, energy consumption is high, and can't immediately regulate biogas output according to the biogas utilization amount, cause waste.
Summary of the invention
The purpose of this invention is to provide a kind of hydrocyclone anaerobic digestion tower and using method thereof, solve the technical problem of avoiding the surface scum layer occurring, effectively distinguishing the raw material grog; And solve and to increase work efficiency, to reduce the problem that energy consumption, flexible avoid waste.
For achieving the above object, the present invention adopts following technical scheme:
A kind of hydrocyclone anaerobic digestion tower comprises tower body, feed-pipe and scum pipe.
described tower body is that the bottom is the cylinder of back taper, the bottom of cylinder of back taper is fixed on bearing, the top cover of sealing is arranged at the top of tower body, there is a vertical hollow flow-guiding cylinder of being furnished with sealing cover of placing at the center of described tower body, the upper end of described guide shell is higher than top cover, and the back taper bottom of lower end and tower body is connected, the middle part inwall of described guide shell is fixed a submersible machine, described submersible machine is connected with the lifting impeller, the sidewall of described guide shell and upper, the lower two-layer thrust-augmenting nozzle connection that radiation distributes that is, be furnished with respectively tangential same side hole on upper strata thrust-augmenting nozzle and lower floor's thrust-augmenting nozzle, and the pod apertures of up and down perforate opposite direction, the upper strata thrust-augmenting nozzle is positioned at the surface of material, on lower floor's thrust-augmenting nozzle is positioned at bottom the tower body back taper, perpendicular between upper strata thrust-augmenting nozzle and tower body sidewall have one to enclose stabilier, a water shoot is arranged between described stabilier and tower side wall, the upper port of described water shoot is under the liquid level of clear liquid, lower port is led to outside tower body, a feed-pipe that is communicated with extraneous and guide shell is arranged at the bottom of described tower body, the following slag gathering hopper that connects in back taper bottom of tower body, described slag gathering hopper is communicated with scum pipe, and the biogas pipe is arranged on the top cover of described tower body, and described biogas pipe is connected with the electric control box signal with pressure unit.
Described upper strata thrust-augmenting nozzle and lower floor's thrust-augmenting nozzle form by two to eight pipes.
The shape of described stabilier is tubaeform or top is that round shape, bottom are tubaeform.
Have an inspection manhole on the sidewall of described tower body bottom and top cover.
A kind of using method of using described hydrocyclone anaerobic digestion tower:
Living, grog separates: unlatching work, submersible machine drives and promotes wheel rotation, and in guide shell, the anaerobism material rises from bottom to top, and the mud in material is inhaled into guide shell from lower floor's thrust-augmenting nozzle, be sprayed onto the material top layer through the upper strata thrust-augmenting nozzle, broken loose top layer scum silica frost, levels thrust-augmenting nozzle turnover flow path direction is opposite, forms hydrocyclone, under the action of the centrifugal, the heavy matured slag that inorganicization degree is higher, proportion is larger sinks along outer sideway swivel, is imported slag gathering hopper at the bottom of the back taper tower of bottom, effluxes through scum pipe; The living slag of the lightweight that inorganicization degree is lower, proportion is less sinks along interior sideway swivel, is sucked back guide shell by lower floor's thrust-augmenting nozzle and mixes with the raw material that entered by feed-pipe, does further Anaerobic Digestion;
Natural pond liquid clear liquid separates: the annular zone that stabilier and tower body form goes out supernatant liquor with the material clarified separation, effluxes through water shoot, and the natural pond slag that clarified separation goes out falls into further digestion process of eddy flow material;
The firedamp drainage amount is regulated: the biogas that anaerobic digestion produces is collected from tower top biogas pipe and is effluxed, pressure unit uploads to electric control box with the biogas pressure signal, the frequency transformer of electric control box is according to the rotating speed of biogas pressure signal control submersible machine, when biogas pressure increases, reduce submersible machine and promote mixing of materials intensity in wheel speed, reduction tower, and then the minimizing biogas output, otherwise increase biogas output.
Compared with prior art the present invention has following characteristics and beneficial effect:
The present invention has overcome the shortcoming that the conventional anaerobic digestion plant efficiency is low, energy consumption is high, has solved and has processed effectively, neatly the technical problem of organic waste.
The present invention is suite of equipment, complete machine is placed on concrete floor, connect outside charging, deslagging, draining, biogas pipe and external power cord, after starting submersible machine and feed, can put into operation, utilize the hydrocyclone mode to realize that material stirring, broken loose, the living grog of scum silica frost separate, improve Anaerobic Digestion efficient, improve biogas output, save the Anaerobic Digestion energy consumption, and adopt the intensity adjustable anaerobic digestion process according to biogas pressure, realize biogas production, utilize the system automation operation, regulate.
The present invention can be widely used in the Anaerobic Digestion of the high density organic waste such as waste water, waste liquid, rubbish, ight soil, mud.
Description of drawings
The present invention will be further described in detail below in conjunction with accompanying drawing.
Fig. 1 is structural representation of the present invention.
Fig. 2 is structure schematic top plan view of the present invention.
Reference numeral: 1-tower body, 2-guide shell, 3-submersible machine, 4-promote impeller, 5-thrust-augmenting nozzle, 6-feed-pipe, 7-slag gathering hopper, 8-scum pipe, 9-stabilier, 10-water shoot, 11-biogas pipe, 12-pressure unit, 13-inspection manhole, 14-electric control box, 15-top cover, 16-sealing cover, 17-material, 18-clear liquid, 19-bearing.
Embodiment
embodiment is shown in Figure 1, described tower body 1 is that the bottom is the cylinder of back taper, the bottom of cylinder of back taper is fixed on bearing 19, and the tower body diameter is 4 ~ 8 meters, is highly 10 ~ 18 meters, the top cover 15 of sealing is arranged at the top of tower body 1, the outside is done integral heat insulation and is processed, and there is a vertical hollow flow-guiding cylinder 2 of being furnished with sealing cover 16 of placing at the center of described tower body 1, and diameter is 600 ~ 1200 millimeters, the upper end of described guide shell 2 is higher than top cover 15, and the back taper bottom of lower end and tower body 1 is connected, the middle part inwall of described guide shell is fixed a submersible machine 3, power is 2.2 ~ 11 kilowatts, described submersible machine 3 is connected with lifting impeller 4, the sidewall of described guide shell 2 and upper, lower two-layer thrust-augmenting nozzle 5 connections that radiation distributes that are, thrust-augmenting nozzle 5 diameters are 100 ~ 200 millimeters, be furnished with respectively tangential same side hole on upper strata thrust-augmenting nozzle and lower floor's thrust-augmenting nozzle, and the pod apertures of up and down perforate opposite direction, the upper strata thrust-augmenting nozzle is positioned at the surface of material 17, on lower floor's thrust-augmenting nozzle is positioned at bottom the tower body back taper, perpendicular between upper strata thrust-augmenting nozzle and tower body sidewall have one to enclose stabilier 9, described stabilier 9 tops are round shapes, the bottom is that a water shoot 10 is arranged between tubaeform described stabilier 9 and tower side wall, the upper port of described water shoot 10 is under the liquid level of clear liquid 18, lower port is led to outside tower body 1, a feed-pipe 6 that is communicated with extraneous and guide shell is arranged at the bottom of described tower body, the following slag gathering hopper 7 that connects in back taper bottom of tower body, described slag gathering hopper 7 is communicated with scum pipe 8, on the top cover 15 of described tower body, biogas pipe 11 is arranged, described biogas pipe 11 is connected signal and is connected with electric control box with pressure unit 12, have an inspection manhole 13 on the lower sidewall of described tower body 1 and top cover.
Tower body 1, guide shell 2, slag gathering hopper 7, stabilier 9 adopt roll bending to be welded, 6 ~ 8 millimeters of steel plate thickness; Thrust-augmenting nozzle 5, feed-pipe 6, scum pipe 8, water shoot 10, biogas pipe 11 adopt steel pipe manufacturing, 100 ~ 200 millimeters of calibers, 6 ~ 8 millimeters of thickness; Submersible machine 3, lifting impeller 4, pressure unit 12, inspection manhole 13 and flange, valve etc. are standard equipment and standardized component, can purchase by technical project requirement direct market; Electric control box 14 Application standard switch boxs are made.
Shown in Figure 2, described thrust-augmenting nozzle 5 is comprised of four pipes with side hole, and four pipe orders are connected with guide shell at a distance of 90 degree, the perforate opposite direction of upper strata thrust-augmenting nozzle and lower floor's thrust-augmenting nozzle.
Device assembles of the present invention is as follows:
Tower body 1, guide shell 2, thrust-augmenting nozzle 5, feed-pipe 6, slag gathering hopper 7, scum pipe 8, stabilier 9, water shoot 10, biogas pipe 11, inspection manhole 13 welding are completed; With submersible machine 3, promote impeller 4 assemblings and be positioned on the guide shell inner support from guide shell is suitable for reading; Pressure unit 12 is installed to the tower body top; Electric control box 14 is hung on the tower body outside, connect submersible machine power cable and pressure unit 12 signal cables, sealing submersible machine power cable entrance hole; The present invention is suite of equipment, and complete machine is placed on concrete floor, connects outside feed-pipe, scum pipe, water shoot, biogas pipe and external power cord, after starting submersible machine and feed, can put into operation.
The effect of each parts of the present invention and overall work process are as follows:
Tower body 1 is used for holding the anaerobic digestion material; Guide shell 2 is used for the water conservancy diversion material; Submersible machine 3 is used for driving the lifting impeller; Promote impeller 4 and be used for promoting the anaerobic digestion material; Upper strata thrust-augmenting nozzle in thrust-augmenting nozzle is used for broken loose top layer scum silica frost, and upper and lower layer thrust-augmenting nozzle synergy forms material hydrocyclone in tower; Feed-pipe 6 is used for to anaerobic digestion tower feed; Slag gathering hopper 7 is used for collecting discharges the higher heavy natural pond slag of inorganicization degree; Scum pipe 8 is used for effluxing heavy natural pond slag; Stabilier 9 is used for isolation and clarifies natural pond liquid clear liquid, effluxes natural pond liquid; Water shoot 10 is used for collection and effluxes natural pond liquid clear water; Biogas pipe 11 is used for collecting the biogas that effluxes the anaerobic digestion generation; Pressure unit 12 is for detection of biogas pressure in tower; Convection current ventilation and personnel's turnover when inspection manhole 13 is used for maintenance; Electric control box 14 is for the submersible machine power supply and according to biogas pressure transducer signal variable frequency control submersible machine rotating speed.
material clear liquids etc. flow to referring to shown in the direction of arrow in Fig. 1, give birth to, grog separates: unlatching work, submersible machine 3 drives and promotes impeller 4 rotations, the interior anaerobism material of guide shell 2 rises from bottom to top, mud in material is inhaled into guide shell 2 from lower floor's thrust-augmenting nozzle, be sprayed onto the top layer of material 17 through the upper strata thrust-augmenting nozzle, broken loose top layer scum silica frost, levels thrust-augmenting nozzle turnover flow path direction is opposite, form hydrocyclone, under the action of the centrifugal, inorganicization degree is higher, the heavy matured slag that proportion is larger sinks along outer sideway swivel, imported slag gathering hopper 7 at the bottom of the back taper tower of bottom, efflux through scum pipe 8, the living slag of the lightweight that inorganicization degree is lower, proportion is less sinks along interior sideway swivel, is sucked back guide shell 2 by lower floor's thrust-augmenting nozzle and mixes with the raw material that entered by feed-pipe 6, does further Anaerobic Digestion,
Natural pond liquid clear liquid separates: stabilier 9 goes out supernatant liquor 18 with the annular zone that tower body forms with the material clarified separation, effluxes through water shoot 10, and the natural pond slag that clarified separation goes out falls into further digestion process of eddy flow material;
The firedamp drainage amount is regulated: the biogas that anaerobic digestion produces is collected from tower top biogas pipe 11 and is effluxed, pressure unit 12 uploads to electric control box 14 with the biogas pressure signal, the frequency transformer of electric control box 14 is according to the rotating speed of biogas pressure signal control submersible machine 3, when biogas pressure increases, reduce submersible machine and promote mixing of materials intensity in wheel speed, reduction tower, and then the minimizing biogas output, otherwise increase biogas output, to realize the operation of anaerobic digestion tower autostable.
Claims (5)
1. a hydrocyclone anaerobic digestion tower, comprise tower body, feed-pipe and scum pipe, it is characterized in that:
described tower body (1) is that the bottom is the cylinder of back taper, the bottom of cylinder of back taper is fixed on bearing (19), the top cover (15) of sealing is arranged at the top of tower body (1), there is a vertical hollow flow-guiding cylinder (2) of being furnished with sealing cover (16) of placing at the center of described tower body (1), the upper end of described guide shell (2) is higher than top cover (15), and the back taper bottom of lower end and tower body (1) is connected, the middle part inwall of described guide shell is fixed a submersible machine (3), described submersible machine (3) is connected with lifting impeller (4), the sidewall of described guide shell (2) and upper, lower two-layer thrust-augmenting nozzle (5) connection that radiation distributes that is, be furnished with respectively tangential same side hole on upper strata thrust-augmenting nozzle and lower floor's thrust-augmenting nozzle, and the pod apertures of up and down perforate opposite direction, the upper strata thrust-augmenting nozzle is positioned at the surface of material (17), on lower floor's thrust-augmenting nozzle is positioned at bottom the tower body back taper, perpendicular between upper strata thrust-augmenting nozzle and tower body sidewall have one to enclose stabilier (9), a water shoot (10) is arranged between described stabilier (9) and tower side wall, the upper port of described water shoot (10) is under the liquid level of clear liquid (18), lower port is led to outside tower body (1), a feed-pipe (6) that is communicated with extraneous and guide shell is arranged at the bottom of described tower body, the following slag gathering hopper (7) that connects in back taper bottom of tower body, described slag gathering hopper (7) is communicated with scum pipe (8), biogas pipe (11) is arranged on the top cover of described tower body (15), and described biogas pipe (11) is connected 14 with pressure unit (12) with electric control box) signal is connected.
2. hydrocyclone anaerobic digestion tower according to claim 1, it is characterized in that: described upper strata thrust-augmenting nozzle and lower floor's thrust-augmenting nozzle form by two to eight pipes.
3. hydrocyclone anaerobic digestion tower according to claim 1, it is characterized in that: the shape of described stabilier (9) is tubaeform or top is that round shape, bottom are tubaeform.
4. hydrocyclone anaerobic digestion tower according to claim 1 is characterized in that: have an inspection manhole (13) on the sidewall of described tower body (1) bottom and top cover.
5. an application rights requires the using method of one of 1-4 described hydrocyclone anaerobic digestion tower, it is characterized in that:
Living, grog separates: unlatching work, submersible machine (3) drives and promotes impeller (4) rotation, the interior anaerobism material of guide shell (2) rises from bottom to top, mud in material is inhaled into guide shell (2) from lower floor's thrust-augmenting nozzle, be sprayed onto the material top layer through the upper strata thrust-augmenting nozzle, broken loose top layer scum silica frost, levels thrust-augmenting nozzle turnover flow path direction is opposite, form hydrocyclone, under the action of the centrifugal, the heavy matured slag that inorganicization degree is higher, proportion is larger sinks along outer sideway swivel, is imported slag gathering hopper (7) at the bottom of the back taper tower of bottom, effluxes through scum pipe (8); The living slag of the lightweight that inorganicization degree is lower, proportion is less sinks along interior sideway swivel, is sucked back guide shell (2) by lower floor's thrust-augmenting nozzle and mixes with the raw material that entered by feed-pipe (6), does further Anaerobic Digestion;
Natural pond liquid clear liquid separates: stabilier (9) goes out supernatant liquor with the annular zone that tower body forms with the material clarified separation, effluxes through water shoot (10), and the natural pond slag that clarified separation goes out falls into further digestion process of eddy flow material;
The firedamp drainage amount is regulated: the biogas that anaerobic digestion produces is collected from tower top biogas pipe (11) and is effluxed, pressure unit (12) uploads to electric control box (14) with the biogas pressure signal, the frequency transformer of electric control box (14) is according to the rotating speed of biogas pressure signal control submersible machine (3), when biogas pressure increases, reduce submersible machine and promote mixing of materials intensity in wheel speed, reduction tower, and then the minimizing biogas output, otherwise increase biogas output.
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| CN201210547158.1A CN103114036B (en) | 2012-12-17 | 2012-12-17 | Hydraulic cyclone anaerobic digestion tower and using method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110295103A (en) * | 2019-07-02 | 2019-10-01 | 航天凯天环保科技股份有限公司 | A kind of Novel rod liquid stirring-type waste anaerobic ferment devices |
| CN110305774A (en) * | 2019-07-02 | 2019-10-08 | 航天凯天环保科技股份有限公司 | A kind of novel waste anaerobic ferment devices |
| CN110526292A (en) * | 2019-06-04 | 2019-12-03 | 河南金谷实业发展有限公司 | The technique of chromium is extracted in a kind of chromium pollutant |
| CN115253754A (en) * | 2022-07-18 | 2022-11-01 | 上海市基础工程集团有限公司 | A simple and easy bentonite agitating unit for mortar production system |
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| CN103114036B (en) | 2014-06-25 |
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