CN104773860A - Solid-liquid comprehensive separation method and solid-liquid comprehensive separation system for blown-down liquid waste of farm - Google Patents
Solid-liquid comprehensive separation method and solid-liquid comprehensive separation system for blown-down liquid waste of farm Download PDFInfo
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- CN104773860A CN104773860A CN201510186393.4A CN201510186393A CN104773860A CN 104773860 A CN104773860 A CN 104773860A CN 201510186393 A CN201510186393 A CN 201510186393A CN 104773860 A CN104773860 A CN 104773860A
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Abstract
The invention discloses a solid-liquid comprehensive separation method and a solid-liquid comprehensive separation system for blown-down liquid waste of a farm. According to the technical scheme, the solid-liquid comprehensive separation method comprises the following steps: performing primary separation on liquid waste which is discharged out of a hog house through a liquid collecting slot, a liquid discharge tube and a filter tube; introducing the primarily-separated solid substances into a filtrate basket through a liquid inlet tube to perform intermediate-stage separation, introducing solid substances which are subjected to the intermediate-stage separation into a charge hole of a spiral conveyor through a discharge tube to perform final-stage separation; and discharging the solid substances which are subjected to the final-stage separation out of a discharge tube. According to the solid-liquid comprehensive separation method, comprehensive solid-liquid separation is performed on wastewater of the farm in processes, so that the swine urine and the pig manure are completely separated, the solid and the liquid are respectively treated conveniently in the next step, the treatment cost is reduced, and the economic benefits are improved.
Description
technical field:
The present invention relates to the method and system of a kind of plant waste liquid solid-liquid separation, particularly relate to a kind of farm pollution discharge waste liquid solid-liquid integrated separation methods and system.
background technology:
My company is devoted to specialty and raises pigs, the scale of greatly developing is raised pigs, there is more than 20 pig farm at present, pig hundreds of thousands of head is produced on each pig farm per year, and in order to improve meat level and the surviving rate of pig, we adopt overhead type pig house, the bottom of pig house is provided with crevice board, the ight soil of pig flows in the receiving tank of below at any time, is for further processing after collection again, ensures that the living environment of pig is clean.
The matter of utmost importance that large scale of pig farm brings is exactly the process of waste water, badly will cause environmental pollution, can bring disaster to farmland near pig farm, cause farmland to have no harvest, affect the life of peasant time serious if processed.And Pig farm wastewater process can not only be stared in this link of production technique, and it should be regarded as a system, so more be conducive to the development of Large-scale pig farm.
My company adopts and focuses on waste water, all Waste Water Centralized on a pig farm together, these waste water comprise pig urine, pig manure and wash-down water, need to carry out solid-liquid separation after concentrating, isolated solid is delivered to feed factory and is carried out organic fertilizer production, isolated liquid is sent into fermentor tank and is carried out biogas production, and biogas can throw light on, warms oneself and cook, and improves comprehensive utilization ratio.
The waste water on current pig farm is not through initial stage solid-liquid separation, and solid-liquid separation just in the end one sewage treatment process is carried out, and its workload is large, also need equipment special in a large number, efficiency is low and cost is higher, and thus the wastewater treatment capacity on whole pig farm is very large, reduces the economic benefit of enterprise.
summary of the invention:
Technical problem to be solved by this invention is: overcome the deficiencies in the prior art, there is provided a kind of and adopt the measure of multiple tracks solid-liquid separation, good separating effect and the farm pollution discharge waste liquid solid-liquid integrated separation methods of increasing work efficiency, a kind of reasonable in design, easy manipulation, good separating effect and the comprehensive separation system of lower-cost farm pollution discharge waste liquid solid-liquid are provided simultaneously.
Technical scheme of the present invention is:
A kind of farm pollution discharge waste liquid solid-liquid integrated separation methods, comprises the following steps:
A, elementary solid-liquid separation: in the one end in pig house district, intercepting basin is set, urine, ight soil and wash-down water in pig house district in each independent pig house are all discharged in intercepting basin, liquid discharge pipe is buried underground in the below of intercepting basin, at the bottom interval of intercepting basin, strainer tube is set, the lower end of strainer tube is communicated with liquid discharge pipe, top and the top of strainer tube are arranged at intervals with filter pore, liquid enters liquid discharge pipe by filter pore and carries out elementary solid-liquid separation, and isolated solid deposits is in sump bottom and along intercepting basin flow further downstream;
B, intermediate solid-liquid separation: a turret is set in the centre of collecting tank, turret is evenly arranged multiple filtrate basket, the body wall of each liquid basket all gathers liquid drain hole, the top of head end filtrate basket is provided with liquid-inlet pipe, the below of tail end filtrate basket is provided with splicing groove, the solid matter that primary separation in intercepting basin goes out enters filtrate basket by liquid-inlet pipe and carries out intermediate solid-liquid separation, and isolated solid matter enters splicing groove;
C, whole level solid-liquid separation: a screw input feeder is set, the discharge end of this screw input feeder is set to taper pipeline section, the screw-blade of its inner chamber is also gradually small-sized, the two matches, the body wall of taper pipeline section gathers liquid drain hole, the isolated solid matter of middle rank enters the opening for feed of screw input feeder by the discharge nozzle be communicated with splicing groove, carry out whole level solid-liquid separation, isolated solid matter is discharged by drainage conduit.
Strainer tube wraps up filtering net, adopt binding-type to fix, and the upper end of strainer tube exceeds the bottom surface of intercepting basin.
Filtrate basket is connected with the bracing frame elasticity on turret, filtrate basket arranges vibrator, between turret with the job platform in the middle of collecting tank, rotary type is connected, driving mechanism is provided therebetween, the lower end of filtrate basket and liquid-inlet pipe are provided with motorized valve respectively, all motorized valves are all connected with controller with driving mechanism, realize automatic feed liquor, rotation and discharge.
The taper pipeline section of screw input feeder is connected by bolt is movable with cylindricality pipeline section, is connected, drainage conduit lower end is provided with auxiliary support frame in the outlet of taper pipeline section by bolt and drainage conduit are movable.
Arrange in the below of taper pipeline section and connect liquid bucket, connect liquid bucket and adopt cone bucket structure, its low side is provided with outlet, and the screw-conveyer-shaft of screw input feeder is connected with the auger motor in frame.
The comprehensive separation system of a kind of farm pollution discharge waste liquid solid-liquid, comprise elementary equipment for separating liquid from solid, intermediate equipment for separating liquid from solid and whole level equipment for separating liquid from solid, described elementary equipment for separating liquid from solid comprises intercepting basin, the below of described intercepting basin is buried underground by liquid discharge pipe, the bottom interval of described intercepting basin arranges strainer tube, the lower end of described strainer tube is communicated with described liquid discharge pipe, and top and the top of described strainer tube are arranged at intervals with filter pore; Described intermediate equipment for separating liquid from solid comprises collecting tank, the centre of described collecting tank arranges a turret, described turret is evenly arranged multiple filtrate basket, the body wall of filtrate basket described in each all gathers liquid drain hole, described in head end, the top of filtrate basket is provided with liquid-inlet pipe, described in tail end, the below of filtrate basket is provided with splicing groove, and described splicing groove lower end is provided with discharge nozzle; Described whole level equipment for separating liquid from solid comprises a screw input feeder, and the discharge end of described screw input feeder is taper pipeline section, and the screw-blade of its inner chamber is also gradually small-sized, and the two matches, and the body wall of described taper pipeline section gathers liquid drain hole; In described intercepting basin, isolated solid matter enters described filtrate basket by liquid-inlet pipe, the isolated solid matter of described filtrate basket enters the opening for feed of described screw input feeder by described discharge nozzle, the isolated solid matter of described screw input feeder is discharged by drainage conduit.
Described strainer tube wraps up filtering net, adopt binding-type to fix, and the upper end of described strainer tube exceeds the bottom surface of described intercepting basin.
Described filtrate basket is connected with the bracing frame elasticity on described turret, described filtrate basket arranges vibrator, between described turret with the job platform in the middle of described collecting tank, rotary type is connected, driving mechanism is provided therebetween, the lower end of described filtrate basket and described liquid-inlet pipe are provided with motorized valve respectively, all described motorized valves are all connected with controller with described driving mechanism, realize automatic feed liquor, rotation and discharge.
The taper pipeline section of described screw input feeder is connected by bolt is movable with cylindricality pipeline section, and the outlet of described taper pipeline section is connected with described drainage conduit is movable by bolt, and described drainage conduit lower end is provided with auxiliary support frame.
The below of described taper pipeline section arranges and connects liquid bucket, described in connect liquid bucket and adopt cone bucket structure, its low side is provided with outlet, and the screw-conveyer-shaft of described screw input feeder is connected with the auger motor in frame.
The invention has the beneficial effects as follows:
1, operation break-down of the present invention carries out comprehensive solid-liquid separation to the waste water of plant, pig urine and pig manure is separated completely, is convenient to next step and processes respectively solid-liquid, reduce processing costs, increase economic efficiency.
2, the present invention adopts strainer tube when elementary solid-liquid separation, and strainer tube arranges filter pore, pig urine and pig manure tentatively can be separated, in addition, strainer tube can also arrange filtering net, increase filter effect, and can change at any time according to service condition, ensure filter effect.
3, the upper end of strainer tube of the present invention exceeds the bottom certain altitude of intercepting basin, even if also can carry out solid-liquid separation during wastewater sedimentation, now urine carries out solid-liquid separation by the filter pore at strainer tube top or top, improves separating effect.
4, the present invention adopts the uninterrupted rotation operation of multiple filtrate basket when intermediate solid-liquid separation, and efficiency is high, and extends the filtrate time, improve filtrate separating effect, in addition, between filtrate basket and bracing frame, spring being set, more can increasing filtrate effect by arranging vibration device.
5, turret of the present invention, liquid-inlet pipe and filtrate basket all can adopt automatic control, realize a series of automatic operation of feed liquor, rotation, pause and discharge, reduce and manually drop into, and reduce labour intensity.
6, the present invention adopts the structure of cone spiral vane and taper pipeline section when whole level solid-liquid separation, can extrude, be convenient to liquid to extrude, thus realize solid-liquid separation solidliquid mixture, and it belongs to powerful and is separated, thus good separating effect.
7, the present invention is when carrying out extruding and being separated, and due to extrusion friction, just produce a large amount of heats, this heat can heat solidliquid mixture, plays the effect of oven dry, improves separating effect.
8, the present invention's manipulation reasonable in design, easy, good separating effect and cost is lower, applied widely, be especially applicable to the innoxious circular treatment of waste liquid of large-scale farming field, there is after popularization good economic benefit.
accompanying drawing illustrates:
Fig. 1 is the structural representation of the comprehensive separation system of farm pollution discharge waste liquid solid-liquid;
Fig. 2 is the vertical view of tripping device intermediate shown in Fig. 1.
embodiment:
Embodiment one:
A kind of farm pollution discharge waste liquid solid-liquid integrated separation methods, comprises the following steps:
A, elementary solid-liquid separation: in the one end in pig house district, intercepting basin is set, urine, ight soil and wash-down water in pig house district in each independent pig house are all discharged in intercepting basin, liquid discharge pipe is buried underground in the below of intercepting basin, at the bottom interval of intercepting basin, strainer tube is set, the lower end of strainer tube is communicated with liquid discharge pipe, top and the top of strainer tube are arranged at intervals with filter pore, liquid enters liquid discharge pipe by filter pore and carries out elementary solid-liquid separation, and isolated solid deposits is in sump bottom and along intercepting basin flow further downstream;
B, intermediate solid-liquid separation: a turret is set in the centre of collecting tank, turret is evenly arranged multiple filtrate basket, the body wall of each liquid basket all gathers liquid drain hole, the top of head end filtrate basket is provided with liquid-inlet pipe, the below of tail end filtrate basket is provided with splicing groove, the solid matter that primary separation in intercepting basin goes out enters filtrate basket by liquid-inlet pipe and carries out intermediate solid-liquid separation, and isolated solid matter enters splicing groove;
C, whole level solid-liquid separation: a screw input feeder is set, the discharge end of this screw input feeder is set to taper pipeline section, the screw-blade of its inner chamber is also gradually small-sized, the two matches, the body wall of taper pipeline section gathers liquid drain hole, the isolated solid matter of middle rank enters the opening for feed of screw input feeder by the discharge nozzle be communicated with splicing groove, carry out whole level solid-liquid separation, isolated solid matter is discharged by drainage conduit.
Strainer tube wraps up filtering net, adopts binding-type to fix, be convenient to change at any time, ensure filtering separation effect, and the upper end of strainer tube exceeds the bottom surface of intercepting basin, even if solid deposits, also can filter.
Filtrate basket is connected with the bracing frame elasticity on turret, filtrate basket arranges vibrator, between turret with the job platform in the middle of collecting tank, rotary type is connected, driving mechanism is provided therebetween, the lower end of filtrate basket and liquid-inlet pipe are provided with motorized valve respectively, all motorized valves are all connected with controller with driving mechanism, realize automatic feed liquor, rotation and discharge.
The taper pipeline section of screw input feeder is connected by bolt is movable with cylindricality pipeline section, is connected, drainage conduit lower end is provided with auxiliary support frame in the outlet of taper pipeline section by bolt and drainage conduit are movable.
Arrange in the below of taper pipeline section and connect liquid bucket, connect liquid bucket and adopt cone bucket structure, its low side is provided with outlet, and the screw-conveyer-shaft of screw input feeder is connected with the auger motor in frame.
Operation break-down of the present invention carries out comprehensive solid-liquid separation to the waste water of plant, pig urine and pig manure is separated completely, is convenient to next step and processes respectively solid-liquid, reduce processing costs, increase economic efficiency.
Embodiment two: see Fig. 1-Fig. 2, in figure, 1-auxiliary support frame, 2-drainage conduit, 3-connects liquid bucket, 4-screw-conveyer-shaft, 5-screw-blade, 6-taper pipeline section, 7-cylindricality pipeline section, 8-opening for feed, 9-frame, 10-auger motor, 11-discharge nozzle, 12-splicing groove, 13-filtrate basket, 14-bracing frame, 15-job platform, 16-turret, 17-liquid-inlet pipe, 18-support bar, 19-collecting tank, 20-leakage fluid dram, 21-intercepting basin, 22-fluid inlet, 23-liquid discharge pipe, 24-back up pad, 25-strainer tube, 26-filter pore.
The comprehensive separation system of farm pollution discharge waste liquid solid-liquid, comprise elementary equipment for separating liquid from solid, middle rank equipment for separating liquid from solid and whole level equipment for separating liquid from solid, wherein: elementary equipment for separating liquid from solid comprises intercepting basin 21, intercepting basin 21 is arranged on the one end in pig house district, urine in pig house district in each independent pig house, ight soil and wash-down water are all discharged in intercepting basin 21 by fluid inlet 22, the upper end of intercepting basin 21 is provided with back up pad 24, be convenient to personnel pass through, also can cover plate be set, the below of intercepting basin 21 is buried underground by liquid discharge pipe 23, the bottom interval of intercepting basin 21 arranges strainer tube 25, the lower end of strainer tube 25 is communicated with liquid discharge pipe 23, the top of strainer tube 25 and top are arranged at intervals with filter pore 26, middle rank equipment for separating liquid from solid comprises collecting tank 19, the centre of collecting tank 19 arranges a turret 16, turret 16 evenly being arranged in multiple filtrate basket 13(figure is four, can certainly be three or six, eight etc.), the body wall of each filtrate basket 13 all gathers liquid drain hole, be convenient to filtrate, the top of head end filtrate basket 13 is provided with liquid-inlet pipe 17, liquid-inlet pipe 17 is fixed on collecting tank 19 by support bar 18, the below of tail end filtrate basket 13 is provided with splicing groove 12, can extend the filtration time of filtrate basket like this, splicing groove 12 lower end is provided with discharge nozzle 11, whole level equipment for separating liquid from solid comprises a screw input feeder, and the discharge end of screw input feeder is taper pipeline section 6, and the screw-blade 5 of its inner chamber is also gradually small-sized, and the two matches, and the body wall of taper pipeline section 6 gathers liquid drain hole, is convenient to filtrate, in intercepting basin 21, isolated solid matter enters filtrate basket 13 by liquid-inlet pipe 17, and the isolated solid matter of filtrate basket 13 enters the opening for feed 8 of screw input feeder by discharge nozzle 11, and the isolated solid matter of screw input feeder is discharged by drainage conduit 2.
Strainer tube 25 wraps up filtering net (not shown in FIG.), adopt binding-type to fix, just with replacing, and the upper end of strainer tube 25 exceeds the bottom surface of intercepting basin 21.
Preferred version: filtrate basket 13 is connected with bracing frame 14 elasticity on turret 16, filtrate basket 13 is arranged vibrator (not shown in FIG.), by vibration, increase filtering separation effect, between turret 16 with the job platform 15 in the middle of collecting tank 19, rotary type is connected, driving mechanism (not shown in FIG.) is provided therebetween, certainly, the two also can be driven by manpower, the lower end of filtrate basket 13 and liquid-inlet pipe 17 are provided with motorized valve respectively, all motorized valves are all connected with controller with driving mechanism, realize automatic feed liquor, rotation and discharge.The bottom of collecting tank 19 is provided with leakage fluid dram 20, and the liquid accumulation that filtrate basket 13 is discharged, in the bottom of intercepting basin 19, is discharged as necessary by leakage fluid dram 20.
The taper pipeline section 6 of screw input feeder is connected by bolt is movable with cylindricality pipeline section 7, can dismounting, be convenient to change, the inwall of taper pipeline section 6 or outer wall also can arrange filtering net, increase filter effect, increase the diameter of filter pore simultaneously, reduce difficulty of processing, the outlet of taper pipeline section 6 is connected with drainage conduit 2 is movable by bolt, and drainage conduit 2 lower end is provided with auxiliary support frame 1, solid and reliable.
The below of taper pipeline section 6 arranges and connects liquid bucket 3, and connect liquid bucket 3 and adopt cone bucket structure, its low side is provided with outlet, and the screw-conveyer-shaft 4 of screw input feeder is connected with the auger motor 10 in frame 9.
Operation break-down of the present invention carries out comprehensive solid-liquid separation to the waste water of plant, pig urine and pig manure is separated completely, is convenient to next step and processes respectively solid-liquid, reduce processing costs, increase economic efficiency.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (10)
1. a farm pollution discharge waste liquid solid-liquid integrated separation methods, comprises the following steps:
A, elementary solid-liquid separation: in the one end in pig house district, intercepting basin is set, urine, ight soil and wash-down water in pig house district in each independent pig house are all discharged in intercepting basin, liquid discharge pipe is buried underground in the below of intercepting basin, at the bottom interval of intercepting basin, strainer tube is set, the lower end of strainer tube is communicated with liquid discharge pipe, top and the top of strainer tube are arranged at intervals with filter pore, liquid enters liquid discharge pipe by filter pore and carries out elementary solid-liquid separation, and isolated solid deposits is in sump bottom and along intercepting basin flow further downstream;
B, intermediate solid-liquid separation: a turret is set in the centre of collecting tank, turret is evenly arranged multiple filtrate basket, the body wall of each filtrate basket all gathers liquid drain hole, the top of head end filtrate basket is provided with liquid-inlet pipe, the below of tail end filtrate basket is provided with splicing groove, the solid matter that primary separation in intercepting basin goes out enters filtrate basket by liquid-inlet pipe and carries out intermediate solid-liquid separation, and isolated solid matter enters splicing groove;
C, whole level solid-liquid separation: a screw input feeder is set, the discharge end of this screw input feeder is set to taper pipeline section, the screw-blade of its inner chamber is also gradually small-sized, the two matches, the body wall of taper pipeline section gathers liquid drain hole, the isolated solid matter of middle rank enters the opening for feed of screw input feeder by the discharge nozzle be communicated with splicing groove, carry out whole level solid-liquid separation, isolated solid matter is discharged by drainage conduit.
2. farm pollution discharge waste liquid solid-liquid integrated separation methods according to claim 1, is characterized in that: on strainer tube, wrap up filtering net, adopt binding-type to fix, and the upper end of strainer tube exceeds the bottom surface of intercepting basin.
3. farm pollution discharge waste liquid solid-liquid integrated separation methods according to claim 1, it is characterized in that: filtrate basket is connected with the bracing frame elasticity on turret, filtrate basket arranges vibrator, between turret with the job platform in the middle of collecting tank, rotary type is connected, driving mechanism is provided therebetween, the lower end of filtrate basket and liquid-inlet pipe are provided with motorized valve respectively, and all motorized valves are all connected with controller with driving mechanism, realize automatic feed liquor, rotation and discharge.
4. farm pollution discharge waste liquid solid-liquid integrated separation methods according to claim 1, it is characterized in that: the taper pipeline section of screw input feeder is connected by bolt is movable with cylindricality pipeline section, be connected by bolt and drainage conduit are movable in the outlet of taper pipeline section, drainage conduit lower end is provided with auxiliary support frame.
5. farm pollution discharge waste liquid solid-liquid integrated separation methods according to claim 1, it is characterized in that: arrange in the below of taper pipeline section and connect liquid bucket, connect liquid bucket and adopt cone bucket structure, its low side is provided with outlet, and the screw-conveyer-shaft of screw input feeder is connected with the auger motor in frame.
6. the comprehensive separation system of farm pollution discharge waste liquid solid-liquid, comprise elementary equipment for separating liquid from solid, intermediate equipment for separating liquid from solid and whole level equipment for separating liquid from solid, it is characterized in that: described elementary equipment for separating liquid from solid comprises intercepting basin, the below of described intercepting basin is buried underground by liquid discharge pipe, the bottom interval of described intercepting basin arranges strainer tube, the lower end of described strainer tube is communicated with described liquid discharge pipe, and top and the top of described strainer tube are arranged at intervals with filter pore; Described intermediate equipment for separating liquid from solid comprises collecting tank, the centre of described collecting tank arranges a turret, described turret is evenly arranged multiple filtrate basket, the body wall of filtrate basket described in each all gathers liquid drain hole, described in head end, the top of filtrate basket is provided with liquid-inlet pipe, described in tail end, the below of filtrate basket is provided with splicing groove, and described splicing groove lower end is provided with discharge nozzle; Described whole level equipment for separating liquid from solid comprises a screw input feeder, and the discharge end of described screw input feeder is taper pipeline section, and the screw-blade of its inner chamber is also gradually small-sized, and the two matches, and the body wall of described taper pipeline section gathers liquid drain hole; In described intercepting basin, isolated solid matter enters described filtrate basket by liquid-inlet pipe, and the isolated solid matter of described filtrate basket enters the opening for feed of screw input feeder by discharge nozzle, the isolated solid matter of described screw input feeder is discharged by drainage conduit.
7. the comprehensive separation system of farm pollution discharge waste liquid solid-liquid according to claim 6, is characterized in that: described strainer tube wraps up filtering net, adopt binding-type to fix, and the upper end of described strainer tube exceeds the bottom surface of described intercepting basin.
8. the comprehensive separation system of farm pollution discharge waste liquid solid-liquid according to claim 6, it is characterized in that: described filtrate basket is connected with the bracing frame elasticity on described turret, described filtrate basket arranges vibrator, between described turret with the job platform in the middle of described collecting tank, rotary type is connected, driving mechanism is provided therebetween, the lower end of described filtrate basket and described liquid-inlet pipe are provided with motorized valve respectively, all described motorized valves are all connected with controller with described driving mechanism, realize automatic feed liquor, rotation and discharge.
9. the comprehensive separation system of farm pollution discharge waste liquid solid-liquid according to claim 6, it is characterized in that: the taper pipeline section of described screw input feeder is connected by bolt is movable with cylindricality pipeline section, the outlet of described taper pipeline section is connected with described drainage conduit is movable by bolt, and described drainage conduit lower end is provided with auxiliary support frame.
10. the comprehensive separation system of farm pollution discharge waste liquid solid-liquid according to claim 6, it is characterized in that: the below of described taper pipeline section arranges and connects liquid bucket, the described liquid bucket that connects adopts cone bucket structure, and its low side is provided with outlet, and the screw-conveyer-shaft of described screw input feeder is connected with the auger motor in frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510186393.4A CN104773860B (en) | 2015-04-20 | 2015-04-20 | Farm pollution discharge waste liquid solid-liquid integrated separation methods and system |
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| CN201510186393.4A CN104773860B (en) | 2015-04-20 | 2015-04-20 | Farm pollution discharge waste liquid solid-liquid integrated separation methods and system |
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| CN104773860A true CN104773860A (en) | 2015-07-15 |
| CN104773860B CN104773860B (en) | 2016-05-11 |
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| CN111569502A (en) * | 2020-06-11 | 2020-08-25 | 广东省资源综合利用研究所 | Spiral solid-liquid separation device |
| CN112794473A (en) * | 2020-12-25 | 2021-05-14 | 徐州市国栋生化装备有限公司 | Intelligent industrial wastewater treatment system applying modified attapulgite |
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| Publication number | Publication date |
|---|---|
| CN104773860B (en) | 2016-05-11 |
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