CA2191461A1 - Polynucleic acids and proteins from a porcine reproductive and respiratory syndrome virus and uses thereof - Google Patents
Polynucleic acids and proteins from a porcine reproductive and respiratory syndrome virus and uses thereofInfo
- Publication number
- CA2191461A1 CA2191461A1 CA002191461A CA2191461A CA2191461A1 CA 2191461 A1 CA2191461 A1 CA 2191461A1 CA 002191461 A CA002191461 A CA 002191461A CA 2191461 A CA2191461 A CA 2191461A CA 2191461 A1 CA2191461 A1 CA 2191461A1
- Authority
- CA
- Canada
- Prior art keywords
- light liquid
- water level
- outflow
- inlet
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 241001135989 Porcine reproductive and respiratory syndrome virus Species 0.000 title 1
- 102000040430 polynucleotide Human genes 0.000 title 1
- 108091033319 polynucleotide Proteins 0.000 title 1
- 102000004169 proteins and genes Human genes 0.000 title 1
- 108090000623 proteins and genes Proteins 0.000 title 1
- 239000007788 liquid Substances 0.000 claims abstract description 183
- 238000000926 separation method Methods 0.000 claims abstract description 71
- 239000010802 sludge Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 60
- 230000001419 dependent effect Effects 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 5
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims 1
- 229920005372 Plexiglas® Polymers 0.000 claims 1
- 239000011521 glass Substances 0.000 claims 1
- 239000012780 transparent material Substances 0.000 claims 1
- 230000001960 triggered effect Effects 0.000 claims 1
- 230000000630 rising effect Effects 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 101100204059 Caenorhabditis elegans trap-2 gene Proteins 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
- E03F5/16—Devices for separating oil, water or grease from sewage in drains leading to the main sewer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
- B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
Landscapes
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- Removal Of Floating Material (AREA)
- Centrifugal Separators (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
The present application for the grant of a patent concerns a compact light liquid separation plant with an integrated, 2-part sludge trap (1), a light liquid collection chamber (14) above the separation chamber (16) and a fine separation chamber (19), with an inlet closure (31) with integrated overfill protection. The essential features are: self-contained light liquid outflow in which the surface is free of light liquid when at rest; inlet closure with integrated overfill protection for three purposes with a float; extended stay in the separation and fine separation chamber by a vertical passage arrangement.
Description
-2 1 9 ~ 461 Li~ht Liquid Separation Plant Specification With the present patent application a light liquid separation plant with integrated sludge trap, vertical upward and downward passage, continuous light liquid outflow, at least one separation and fine separation chamber, inlet closure and integrated overfill protection is described.
Conventional light liquid separators are provided with a sludge trap which is connected to the separator by means of a tube connection. The mixture consisting of sludge of all kinds and of light liquids is fed into the sludge trap.
Within the sludge trap turbulences are generated by the inflow through an inlet tube, wherein fine sludge and light liquid are entrained into the separator and partly into the sewage system by the flow. This entrainment is favoured by the fact that turbulences are generated within the connection to the separator by increased velocities which cause an intensive mixing.
By the integration realized by the invention and described in the following the sludge trap (1) gets the object to take part in the functions of the separator, i.e. to keep back a portion of the light liquid which is as large as ~1~1461 possible in addition to the coarse and fine sludge and thus to unburden the separator and to prevent that the light liquid already deposited on the surface prepares an emulsion with the heavy liquid when entering the separator.
The surface of the sludge trap extends to the separation wall (5) of the fine separation chamber (19). Here, the largest portion of the light liquid, namely about 98 ~, is retained on the highly increased water level and is discharged into the integrated light liquid storage device (lS) through the continuous light liquid outflow tube (9), as subsequently described.
A separation wall (3) is disposed within the sludge trap (1) and thus divides the same into a coarse sludge separation chamber and a fine sludge separation chamber.
The separation wall (3) formed as overflow edge (4) gives the subsequent fine sludge separation chamber optimum relaxation and favours the retention of the fine sludge.
The inlet wall (11) formed as drain wall with overflow edge (12) replaces the head wall of the separation chamber and the inlet and outlet tube. Furthermore, by this inlet wall (11) the whole water level of the sludge trap part (1) becomes undisplaceable so that 98 ~ of the inflowing light liquid are discharged into the light liquid storage device (15) by means of the continuous light liquid outflow tube (9) or the light liquid collection chamber (14).
In this manner the sludge trap (1) becomes the main component of the light liquid separation plant.
The sludge trap (1) with the vertical inlet channel (13) and the light liquid collection chamber (14) are integrated with the separation chamber (16) in such a manner that the ~_ 3 ~19i~61 light liquid is separated from the inflowing light liquid/heavy liquid mixture already at the inlet tube (2) and collects on the water level during operation (17).
The light liquid entrained with the flow is fed into the separation chamber (16) through the vertical inlet channel (13). The liquid volume is lowered with an extremely slow uniform velocity by a flow-technical means (18) located in the bottom portion.
In order to reach a duration of stay as long as possible the separation chambers (16) and (19) are provided with a circulation channel (20) in vertical direction. The vertical downward velocity with nominal throughflow is to have a value below 2 cm/s. The cross section or the surface of the separation chambers (16) and (19) is determined by the volume of the flow. The light liquid sinking with a duration of stay which is as long as possible ascends in the light liquid collection chamber (14) and collects at the water level of the outflow bottom (22). With a density of 0,85 a light liquid column of 15 ~ over the water level and of 85 ~ below the water level, which would develop if no light liquid were present, is formed. The water level itself is displaced by the light liquid in accordance with the density of the same.
If, in the present case, one emanates from the fact that 1 ~ is 5 mm, the light liquid column over the water level will be 75 mm and below the water level will be 85 x 5 =
425 mm. The distance between the lower overflow edge (13') in the vertical inlet channel (13) and the water level (23) in the rest condition is 75 + 425 = 500 mm.
Of course, in this case nothing would be discharged.
_ 4 21ql461 However, if the whole light liquid heigth of 500 mm is only 499 mm, the whole volume in the plant is discharged into the light liquid collection chamber (14), with the exception of the function-dependent volume. In other words, the volume of a heigth of 500 mm minus a heigth of 499 mm =
1 mm has been also discharged and now 499 mm instead of 500 mm are retained by the overflow edge.
In this situation the operation of the plant is started.
The water level (23) in the rest condition increases to the water level (17) in operation. The increasing water level presses the content of the light liquid collection chamber (14) into the light liquid storage device (15). The function-dependent light liquid within the inlet channel (13), together with the water level (23) in the rest condition, increases up to the water level (17) in operation and is distributed on the surface.
Within the light liquid outlet tube (10) only the function-dependent volume remains, i.e. the light liquid column below and above the water level.
All the light liquid flowing in in the operation phase is continuously discharged into the light liquid storage device (15) beyond the function-dependent volume within the light liquid outlet tube (10) so that the light liquid collection chamber (14) is always receptive for the next rest condition.
During the operation simultaneously additional light liquid from the inflowing light liquid/heavy liquid mixture collects on the water level (17) in operation for the formation of a function-dependent light liquid layer. If this layer reaches the downwardly directed overflow edge ~`- 2191461 (8) at the light liquid outflow (6) it flows in the light liquid discharge tube (10) through the light liquid discharge tube (9) to the light liquid storage device (15) after collection of the light liquid column below and above the water level (17) in operation. The overflow edge (8) has the ~same function as the overflow edge (12) within the inlet channel (13).
Apart from a possible light liquid film on the surface of the fine separation chamber (19) in the rest condition only the function-dependent light liquid in the inlet channel (13) in front of the light liquid collection chamber (14) exists.
This function-dependent light liquid volume can be also drained into the light liquid storage device by the drain valves (24). If it is drained the light liquid level starts with a level of 0 at each start of operation.
If the function-dependent light liquid is not drained the same ascends to the surface with rising water level (17) in operation and distributes there.
During operation the drain valves (24) have to be closed.
The drain valves (24) are arranged on account of the following reason on the water level of the drain bottom (22) and the outer wall (25) in the light liquid storage device (15): The water level of the drain bottom (22) is decisive for the light liquid level above and below the water level. Within the plant the light liquid distributes on the water level, for instance with a density of 0,85 with 15 : 85 or 75 mm over the water level and 425 mm below the water level. In other words, if 15 ~ are drained over the water level 85 ~ are drained below the water level.
With a density of 0,90 10 ~ over and 90 ~ below the water level result.
In this manner the drain valves (24) are correct for any higher density.
The situation is different with regard to the light liquid outflow within the separation chamber (16): If one wishes to determine the light liquid outflow below the water level one has to always emanate from the light liquid column above the water level, for instance with a density of 0,85 the light liquid column over the water level is 75 mm and the light liquid column below the water level is 75 : 0,15 x 0,85 = 425 mm. With a density of 0,90 75 : 0,10 x 0,90 =
675 mm.
As one can see the light liquid column below the water level with a density of 0,90 is 675 mm, i.e. 250 mm more than with a density of 0,85.
If in this case nevertheless light liquids of higher densities already drain at 425 mm below the water level, the reason for this can be seen in the fact that only a light liquid column of 47 mm over the water level is necessary when reaching a light liquid column of 425 mm below the water level, i.e. 40 : 0,10 x 0,90 = 423 mm.
Since small production tolerances cannot be avoided a small deduction is carried out from the planned light liquid outflow below the water level.
Light Liquid Separator The passage of the light liquid/heavy liquid mixture is shown by arrows. It flows into the sludge trap (1) through 7 21 ~il 461 the inlet closure (26) and distributes over the whole width of the sludge trap (1). Within the sludge trap (1) the solid heavy substances sink and collect on the bottom while the rising light liquid collects on the water level (17) in operation wherein, in accordance with the light liquid density, the water level is displaced by the light liquid, for instance with a density of 0,85 with 15 ~ over and 85 below the water level which would be generated if no light liquid were present, i.e. water level independent of throughflow plus variations dependent on throughflow. 100 of the throughflow including about 2 ~ of the inflowing light liquid are introduced into the separator itself.
From the sludge trap (1) the liquid flows into the light liquid collection chamber (14) through the inlet channel (13) wherein the remaining light liquid deposits upwardly while the duration of stay of the heavy liquid is prolonged by means of a flow-technical device (18) within the separation chamber (16). The liquid flows into the fine separation chamber (19) through the circulation channel (20). Here, another extreme slowing-down of the sink velocity is realized by the flow-technical device (18') arranged in the bottom portion. A kind of opposite flow separation is caused by this vertical flow wherein simultaneously a mutual flocking of the separating light liquid droplets within the vertically arranged fine separation chamber (19) and of the separating light liquid droplets of the inflowing light liquid/heavy liquid mixture occurs.
The lower this fine separation chamber (19) is arranged the higher the water pressure becomes so that also the smallest light liquid components are pressed out.
If necessary, this fine separation chamber (19) serves for _ 8 2~ 9 ~ 461 the reception of coalescence material in order to satisfy even the highest requirements.
The purified heavy liquid flows through an additional opening (27) at the lowest point of the fine separation chamber (19) over the overflow edge (30) of the drain wall (28) into the outlet (29).
Inlet Closure with integrated Overfill Protection Normally, conventional light liquid separators are provided with an automatic closure which closes the heavy liquid outflow at a maximum light liquid level. However, in this case the inflowing liquid is banked and presses the light liquid out of the storage device or the separation chamber into the ground. For removing this disadvantage the German industrial standard 1999 has been changed in March 1989.
With an inlet closure such banking effect within the separator is excluded.
An inlet closure works with a surface float while the conventional closure at the outflow is provided with a boundary float. This has to be lighter than heavy liquid and heavier than light liquid, i.e. with a surface float the weight of the float is additionally present in contrast to the boundary float. Therefore, the cited inlet closure has been developed for the described overfill protection.
According to the light liquid separation plant described here a dry float housing ~48) is directly mounted at the housing (32) of the inlet closure (31). A float is located within the float housing at the heigth of the water level (23) at rest.
-- 9 21~146~
The light liquid/heavy liquid mixture flows into the housing (32) through the inlet tube (2) and leaves the housing through the outflow tube (33) with opened closure member (34). The closure member (34) is provided with a device with cross hinge (35) the bolt of which being mounted rotatably and axially displaceably crosswisely in U-profiles. The lower profile (36) is connected to the base plate (40) by means of a lever bolt (38) emanating from an articulated shaft (39). In this manner the closure member (34) is rotatable and axially displaceable in all directions. The articulated shaft (39) extends outwardly through the housing wall (42) (shaft seal) and is fixedly connected to a lever (43). The closure member (34) is permanently maintained in the position "open" through this lever (43) by means of a triggering lever (44). The triggering lever (44) is pivotable by a movable suspension (45) and rests within a slot guide (46) above the float housing (48) of the overfill protection (47) and terminates in front of the lever (43) which holds the closure member (34) open. If the heavy liquid or light liquid exceeds the maximum level this heavy liquid or light liquid flows into the dry float housing (48). The rising float (49) lifts the triggering lever (44) and releases the closure member (34) thereby. The closure member (34), after its triggering, falls onto the sealing surface (41) cushioned by the water level. In doing so the closure member (34) is centered and is pressed against the sealing surface by the inflowing light/heavy liquid.
Overfill Protection This overfill protection is a protection with respect to an uncontrolled and unexpectable overfilling and is to also overcome human failure. Especially, foreseeable overfillings are supervised and prevented by this 2~91461 protection in order to exclude contaminations of soil, surface water and ground water by mineral oil and other light liquids. This device makes the light liquid separation plant inoperative by closing the inlet closure (31).
According to the overfill protection (47) the overflow edges of the light liquid inlet tube (50) and the heavy liquid inlet tube (51) are separately disposed at the float housing (48) in such a manner that an elevation of 1 mm is sufficient for closing the inlet closure (31). By this, three objects are achieved in a reliable manner, namely the prevention of:
A the overfilling of the heavy liquid portions, i.e. the sludge trap and separation portion, B the overfilling of the light liquid storage device, C the inflow of heavy liquid into the light liquid storage device.
In the drawing an example of the invention is shown. Of the drawing Figure 1 shows a longitudinal section of the light liquid separation plant, Figure 2 shows a cross section of the light liquid separation plant, Figure 3 shows a top view of the light liquid separation plant, - ll Figure 4 shows a longitudinal section of the inlet closure with integrated overfill protection, Figure 5 shows a cross section of the inlet closure with integrated overfill protection and Figure 6 shows a top view of the inlet closure with integrated overfill protection.
Liqht Liquid Separation Plant with Inlet Closure and integrated Overfill Protection List of Reference Numbers 1. Sludge trap 2. Inlet tube 2' Inlet tube bottom 3. Separation wall 4. Overflow edge of member (3) 5. Separation wall to the fine separation chamber, member (19) 6. Light liquid outflow 6' Intermediate bottom of member (6) 7. Intermediate wall of member (6) 8. Overflow edge of member (6) 9. Light liquid outflow tube for continuous outflow 10. Light liquid outflow tube for the outflow from light liquid collection chamber, member (14) 11. Inlet wall 12. Overflow edge of member (11) 13. Inlet channel 13' Lower overflow edge of member (13) 14. Light liquid collection chamber 15. Light liquid storage device 16. Separation chamber 17. Water level in operation 18. Flow-technical means of member (16) 18' Flow-technical means of member (19) 19. Fine separation chamber 20. Circulation channel 20' Overflow edge of member (20) 21. Outlet tube bottom 22. Water level of outlet tube bottom, member (21) ~191461 23. Water level in rest condition 24. Drain valves 25. Outer wall to the light liquid storage device, member (15) 26. Outlet channel 26' Device for height adjustment 262 Overflow edge of member (263) 263 Adjustment valve of member (26') 27. Opening to the drain wall, member (28) 28. Drain wall 29. Outlet 30. Overflow edge of member (28) 31. Inlet closure 32. Housing 33. Outlet tube 34. Closure member 35. Device with cross hinge 36. Lower profile 37. Upper profile 38. lever bolt 39. Articulated shaft 40. Base plate 41. Sealing surface with two-dimensional seal 42. Housing wall 43. Lever 44. Triggering lever 45. Suspension 46. Slot guide 47. Overfill protection 48. Float housing 49. Float 50. Light liquid inlet tube 51. Heavy liquid inlet tube
Conventional light liquid separators are provided with a sludge trap which is connected to the separator by means of a tube connection. The mixture consisting of sludge of all kinds and of light liquids is fed into the sludge trap.
Within the sludge trap turbulences are generated by the inflow through an inlet tube, wherein fine sludge and light liquid are entrained into the separator and partly into the sewage system by the flow. This entrainment is favoured by the fact that turbulences are generated within the connection to the separator by increased velocities which cause an intensive mixing.
By the integration realized by the invention and described in the following the sludge trap (1) gets the object to take part in the functions of the separator, i.e. to keep back a portion of the light liquid which is as large as ~1~1461 possible in addition to the coarse and fine sludge and thus to unburden the separator and to prevent that the light liquid already deposited on the surface prepares an emulsion with the heavy liquid when entering the separator.
The surface of the sludge trap extends to the separation wall (5) of the fine separation chamber (19). Here, the largest portion of the light liquid, namely about 98 ~, is retained on the highly increased water level and is discharged into the integrated light liquid storage device (lS) through the continuous light liquid outflow tube (9), as subsequently described.
A separation wall (3) is disposed within the sludge trap (1) and thus divides the same into a coarse sludge separation chamber and a fine sludge separation chamber.
The separation wall (3) formed as overflow edge (4) gives the subsequent fine sludge separation chamber optimum relaxation and favours the retention of the fine sludge.
The inlet wall (11) formed as drain wall with overflow edge (12) replaces the head wall of the separation chamber and the inlet and outlet tube. Furthermore, by this inlet wall (11) the whole water level of the sludge trap part (1) becomes undisplaceable so that 98 ~ of the inflowing light liquid are discharged into the light liquid storage device (15) by means of the continuous light liquid outflow tube (9) or the light liquid collection chamber (14).
In this manner the sludge trap (1) becomes the main component of the light liquid separation plant.
The sludge trap (1) with the vertical inlet channel (13) and the light liquid collection chamber (14) are integrated with the separation chamber (16) in such a manner that the ~_ 3 ~19i~61 light liquid is separated from the inflowing light liquid/heavy liquid mixture already at the inlet tube (2) and collects on the water level during operation (17).
The light liquid entrained with the flow is fed into the separation chamber (16) through the vertical inlet channel (13). The liquid volume is lowered with an extremely slow uniform velocity by a flow-technical means (18) located in the bottom portion.
In order to reach a duration of stay as long as possible the separation chambers (16) and (19) are provided with a circulation channel (20) in vertical direction. The vertical downward velocity with nominal throughflow is to have a value below 2 cm/s. The cross section or the surface of the separation chambers (16) and (19) is determined by the volume of the flow. The light liquid sinking with a duration of stay which is as long as possible ascends in the light liquid collection chamber (14) and collects at the water level of the outflow bottom (22). With a density of 0,85 a light liquid column of 15 ~ over the water level and of 85 ~ below the water level, which would develop if no light liquid were present, is formed. The water level itself is displaced by the light liquid in accordance with the density of the same.
If, in the present case, one emanates from the fact that 1 ~ is 5 mm, the light liquid column over the water level will be 75 mm and below the water level will be 85 x 5 =
425 mm. The distance between the lower overflow edge (13') in the vertical inlet channel (13) and the water level (23) in the rest condition is 75 + 425 = 500 mm.
Of course, in this case nothing would be discharged.
_ 4 21ql461 However, if the whole light liquid heigth of 500 mm is only 499 mm, the whole volume in the plant is discharged into the light liquid collection chamber (14), with the exception of the function-dependent volume. In other words, the volume of a heigth of 500 mm minus a heigth of 499 mm =
1 mm has been also discharged and now 499 mm instead of 500 mm are retained by the overflow edge.
In this situation the operation of the plant is started.
The water level (23) in the rest condition increases to the water level (17) in operation. The increasing water level presses the content of the light liquid collection chamber (14) into the light liquid storage device (15). The function-dependent light liquid within the inlet channel (13), together with the water level (23) in the rest condition, increases up to the water level (17) in operation and is distributed on the surface.
Within the light liquid outlet tube (10) only the function-dependent volume remains, i.e. the light liquid column below and above the water level.
All the light liquid flowing in in the operation phase is continuously discharged into the light liquid storage device (15) beyond the function-dependent volume within the light liquid outlet tube (10) so that the light liquid collection chamber (14) is always receptive for the next rest condition.
During the operation simultaneously additional light liquid from the inflowing light liquid/heavy liquid mixture collects on the water level (17) in operation for the formation of a function-dependent light liquid layer. If this layer reaches the downwardly directed overflow edge ~`- 2191461 (8) at the light liquid outflow (6) it flows in the light liquid discharge tube (10) through the light liquid discharge tube (9) to the light liquid storage device (15) after collection of the light liquid column below and above the water level (17) in operation. The overflow edge (8) has the ~same function as the overflow edge (12) within the inlet channel (13).
Apart from a possible light liquid film on the surface of the fine separation chamber (19) in the rest condition only the function-dependent light liquid in the inlet channel (13) in front of the light liquid collection chamber (14) exists.
This function-dependent light liquid volume can be also drained into the light liquid storage device by the drain valves (24). If it is drained the light liquid level starts with a level of 0 at each start of operation.
If the function-dependent light liquid is not drained the same ascends to the surface with rising water level (17) in operation and distributes there.
During operation the drain valves (24) have to be closed.
The drain valves (24) are arranged on account of the following reason on the water level of the drain bottom (22) and the outer wall (25) in the light liquid storage device (15): The water level of the drain bottom (22) is decisive for the light liquid level above and below the water level. Within the plant the light liquid distributes on the water level, for instance with a density of 0,85 with 15 : 85 or 75 mm over the water level and 425 mm below the water level. In other words, if 15 ~ are drained over the water level 85 ~ are drained below the water level.
With a density of 0,90 10 ~ over and 90 ~ below the water level result.
In this manner the drain valves (24) are correct for any higher density.
The situation is different with regard to the light liquid outflow within the separation chamber (16): If one wishes to determine the light liquid outflow below the water level one has to always emanate from the light liquid column above the water level, for instance with a density of 0,85 the light liquid column over the water level is 75 mm and the light liquid column below the water level is 75 : 0,15 x 0,85 = 425 mm. With a density of 0,90 75 : 0,10 x 0,90 =
675 mm.
As one can see the light liquid column below the water level with a density of 0,90 is 675 mm, i.e. 250 mm more than with a density of 0,85.
If in this case nevertheless light liquids of higher densities already drain at 425 mm below the water level, the reason for this can be seen in the fact that only a light liquid column of 47 mm over the water level is necessary when reaching a light liquid column of 425 mm below the water level, i.e. 40 : 0,10 x 0,90 = 423 mm.
Since small production tolerances cannot be avoided a small deduction is carried out from the planned light liquid outflow below the water level.
Light Liquid Separator The passage of the light liquid/heavy liquid mixture is shown by arrows. It flows into the sludge trap (1) through 7 21 ~il 461 the inlet closure (26) and distributes over the whole width of the sludge trap (1). Within the sludge trap (1) the solid heavy substances sink and collect on the bottom while the rising light liquid collects on the water level (17) in operation wherein, in accordance with the light liquid density, the water level is displaced by the light liquid, for instance with a density of 0,85 with 15 ~ over and 85 below the water level which would be generated if no light liquid were present, i.e. water level independent of throughflow plus variations dependent on throughflow. 100 of the throughflow including about 2 ~ of the inflowing light liquid are introduced into the separator itself.
From the sludge trap (1) the liquid flows into the light liquid collection chamber (14) through the inlet channel (13) wherein the remaining light liquid deposits upwardly while the duration of stay of the heavy liquid is prolonged by means of a flow-technical device (18) within the separation chamber (16). The liquid flows into the fine separation chamber (19) through the circulation channel (20). Here, another extreme slowing-down of the sink velocity is realized by the flow-technical device (18') arranged in the bottom portion. A kind of opposite flow separation is caused by this vertical flow wherein simultaneously a mutual flocking of the separating light liquid droplets within the vertically arranged fine separation chamber (19) and of the separating light liquid droplets of the inflowing light liquid/heavy liquid mixture occurs.
The lower this fine separation chamber (19) is arranged the higher the water pressure becomes so that also the smallest light liquid components are pressed out.
If necessary, this fine separation chamber (19) serves for _ 8 2~ 9 ~ 461 the reception of coalescence material in order to satisfy even the highest requirements.
The purified heavy liquid flows through an additional opening (27) at the lowest point of the fine separation chamber (19) over the overflow edge (30) of the drain wall (28) into the outlet (29).
Inlet Closure with integrated Overfill Protection Normally, conventional light liquid separators are provided with an automatic closure which closes the heavy liquid outflow at a maximum light liquid level. However, in this case the inflowing liquid is banked and presses the light liquid out of the storage device or the separation chamber into the ground. For removing this disadvantage the German industrial standard 1999 has been changed in March 1989.
With an inlet closure such banking effect within the separator is excluded.
An inlet closure works with a surface float while the conventional closure at the outflow is provided with a boundary float. This has to be lighter than heavy liquid and heavier than light liquid, i.e. with a surface float the weight of the float is additionally present in contrast to the boundary float. Therefore, the cited inlet closure has been developed for the described overfill protection.
According to the light liquid separation plant described here a dry float housing ~48) is directly mounted at the housing (32) of the inlet closure (31). A float is located within the float housing at the heigth of the water level (23) at rest.
-- 9 21~146~
The light liquid/heavy liquid mixture flows into the housing (32) through the inlet tube (2) and leaves the housing through the outflow tube (33) with opened closure member (34). The closure member (34) is provided with a device with cross hinge (35) the bolt of which being mounted rotatably and axially displaceably crosswisely in U-profiles. The lower profile (36) is connected to the base plate (40) by means of a lever bolt (38) emanating from an articulated shaft (39). In this manner the closure member (34) is rotatable and axially displaceable in all directions. The articulated shaft (39) extends outwardly through the housing wall (42) (shaft seal) and is fixedly connected to a lever (43). The closure member (34) is permanently maintained in the position "open" through this lever (43) by means of a triggering lever (44). The triggering lever (44) is pivotable by a movable suspension (45) and rests within a slot guide (46) above the float housing (48) of the overfill protection (47) and terminates in front of the lever (43) which holds the closure member (34) open. If the heavy liquid or light liquid exceeds the maximum level this heavy liquid or light liquid flows into the dry float housing (48). The rising float (49) lifts the triggering lever (44) and releases the closure member (34) thereby. The closure member (34), after its triggering, falls onto the sealing surface (41) cushioned by the water level. In doing so the closure member (34) is centered and is pressed against the sealing surface by the inflowing light/heavy liquid.
Overfill Protection This overfill protection is a protection with respect to an uncontrolled and unexpectable overfilling and is to also overcome human failure. Especially, foreseeable overfillings are supervised and prevented by this 2~91461 protection in order to exclude contaminations of soil, surface water and ground water by mineral oil and other light liquids. This device makes the light liquid separation plant inoperative by closing the inlet closure (31).
According to the overfill protection (47) the overflow edges of the light liquid inlet tube (50) and the heavy liquid inlet tube (51) are separately disposed at the float housing (48) in such a manner that an elevation of 1 mm is sufficient for closing the inlet closure (31). By this, three objects are achieved in a reliable manner, namely the prevention of:
A the overfilling of the heavy liquid portions, i.e. the sludge trap and separation portion, B the overfilling of the light liquid storage device, C the inflow of heavy liquid into the light liquid storage device.
In the drawing an example of the invention is shown. Of the drawing Figure 1 shows a longitudinal section of the light liquid separation plant, Figure 2 shows a cross section of the light liquid separation plant, Figure 3 shows a top view of the light liquid separation plant, - ll Figure 4 shows a longitudinal section of the inlet closure with integrated overfill protection, Figure 5 shows a cross section of the inlet closure with integrated overfill protection and Figure 6 shows a top view of the inlet closure with integrated overfill protection.
Liqht Liquid Separation Plant with Inlet Closure and integrated Overfill Protection List of Reference Numbers 1. Sludge trap 2. Inlet tube 2' Inlet tube bottom 3. Separation wall 4. Overflow edge of member (3) 5. Separation wall to the fine separation chamber, member (19) 6. Light liquid outflow 6' Intermediate bottom of member (6) 7. Intermediate wall of member (6) 8. Overflow edge of member (6) 9. Light liquid outflow tube for continuous outflow 10. Light liquid outflow tube for the outflow from light liquid collection chamber, member (14) 11. Inlet wall 12. Overflow edge of member (11) 13. Inlet channel 13' Lower overflow edge of member (13) 14. Light liquid collection chamber 15. Light liquid storage device 16. Separation chamber 17. Water level in operation 18. Flow-technical means of member (16) 18' Flow-technical means of member (19) 19. Fine separation chamber 20. Circulation channel 20' Overflow edge of member (20) 21. Outlet tube bottom 22. Water level of outlet tube bottom, member (21) ~191461 23. Water level in rest condition 24. Drain valves 25. Outer wall to the light liquid storage device, member (15) 26. Outlet channel 26' Device for height adjustment 262 Overflow edge of member (263) 263 Adjustment valve of member (26') 27. Opening to the drain wall, member (28) 28. Drain wall 29. Outlet 30. Overflow edge of member (28) 31. Inlet closure 32. Housing 33. Outlet tube 34. Closure member 35. Device with cross hinge 36. Lower profile 37. Upper profile 38. lever bolt 39. Articulated shaft 40. Base plate 41. Sealing surface with two-dimensional seal 42. Housing wall 43. Lever 44. Triggering lever 45. Suspension 46. Slot guide 47. Overfill protection 48. Float housing 49. Float 50. Light liquid inlet tube 51. Heavy liquid inlet tube
Claims (12)
1. A light liquid separation plant for the separation of light liquid/heavy liquid mixtures comprising a one-part or multi-part sludge trap (1) with or without an inlet closure (31) and an integrated overfill protection (47), a separation wall (3), an inlet wall (11) with an overflow edge (12) to an inlet channel (13), a light liquid collection chamber (14) located in the upper part of the following separation chamber (16), a light liquid outflow (6), a circulation channel (20) having a flow-technical means (slot) (18) in the lower part, a fine separation chamber (19) having also a flow-technical means (perforated plate) (18') in its bottom part, an outflow channel (26) having in the region of the outflow bottom (21) a means for height adjustment (26'), and a light liquid storage device (15), characterized in that the overflow edge (4) of the separation wall (3) is located slightly below the inlet bottom (2'), the overflow edge (12) of the inlet wall (11) is located slightly lower than the overflow edge (4) of the separation wall (3), the overflow edge (20') at the circulation channel (20) is identical with the height of the outflow tube bottom (21), the overflow edge (28') of the outflow wall (28) is located slightly below the upper edge of the inlet tube (2), the outflow tube bottom (21) is located below the water level (23) in the rest condition for such a distance as made necessary by the density of the light liquid, for instance with a density of 0,85 for 150 mm below the water level (23) in the rest condition, and that a means (26') is located in the region of the outflow bottom with which the height of the outflow tube bottom (21) is determined by adjustment of the overflow edge (262), for instance with a density of 0,90 for 100 mm below the water level (23) in the rest condition.
2. The light liquid separation plant according to claim 1, characterized in that an adjustment valve (263) (or a replaceable cross-section trottle) is located at the device (26') in order to guarantee an overflow of the overflow edge (28') of the outflow wall (28) with a very low throughflow, and that the height of the outflow tube bottom (21) is determined with the overflow edge (262).
3. The light liquid separation plant according to claim 1, characterized in that the separation chamber (16) and the fine separation chamber (19) are formed in such a manner that the total height, the surface of the separation chamber (16) and of the fine separation chamber (19), the drain cross-section within the flow-technical means (18) and (18') and the volume of the liquid throughflow are adjusted with respect to one another such that, in response to the throughflow, a flow rate of below 2 cm/s is maintained in the separation chamber (16) and the fine separation chamber (19).
4. The light liquid separation plant according to claim 1, characterized in that the flow-technical means (18) of the separation chamber (16) is formed in such a manner that, dependent on the reduction of the free throughflow, a uniform small sink rate is maintained.
5. The light liquid separation plant according to claim 4, characterized in that the fine separation chamber (19) has a flow-technical means the apertures thereof being uniformly distributed and dimensioned such that the sink rate is below 2 cm/s.
6. The light liquid separation plant according to claim 1, characterized in that the flow of the light liquid/heavy liquid mixture is directed in such a manner that three overflow edges are generated, namely 1. the overflow edge of the water level (23) in the rest condition, 2. the overflow edge at the lower inlet of the light liquid collection chamber (14), and 3. the overflow edge of the heavy liquid lowering in the separation chamber (16).
7. The light liquid separation plant according to claim 1, characterized in that a combined light liquid outflow (6) is installed, the outer walls thereof reaching up to the upper edge of the separator and the two light liquid outflows (9) and (10) thereof being separated by an intermediate wall (7), that the light liquid outflow (6) for the light liquid collection chamber (14) has a tube (10) adjustable in its height and emanating from the light liquid collection chamber (14), that the light liquid outflow (10) is defined for the outer region or for the light liquid of the whole surface and has a downwardly directed overflow edge (8) slightly below the water level (17) in operation, by which the thickness of the light liquid layer is limited, that a light liquid outflow tube (9) adjustable in its height is installed on the intermediate bottom (6') located slightly above the overflow edge (8), that both outflows (9) and (10) extend to the light liquid storage device (15), and that in operation after the collection of the function-dependent light liquid volume all the additional light liquid is drained into the light liquid storage device (15) through the two light liquid drain tubes (9) and (10).
8. The light liquid separation plant according to claim 7, characterized in that the overflow edge (12) within the inlet channel (13) is located as deep under the outflow tube bottom (21) as it corresponds to the light liquid column below the water level of the smallest density, that the outflow tube bottom is located as deep under the water level (23) in the rest condition as it corresponds to the light liquid column over the water level with the smallest density, and that both light liquid columns below and above the water level correspond to the height of the function-dependent light liquid column so that the light liquid of the outer surface with the exception of the function-dependent light liquid is received by the light liquid storage device (15) after the interruption of the inflow when the water level (17) in operation sinks to the water level (23) in the rest condition.
9. The light liquid separation plant according to claim 1, characterized in that the float (49) is located in a dry float housing (48) and triggers the inlet closure (31) by the inflow of heavy liquid through the heavy liquid inlet tube (51) or the inflow of light liquid through the light liquid inlet tube (50) only if the maximum level of the heavy liquid or light liquid is exceeded.
10. The light liquid separation plant according to claim 1, characterized in that the light liquid outflow tube (10) consisting of transparent material (glass or plexiglass) is adjusted with respect to the heavy liquid inlet tube (51) such that the inlet closure (31) is triggered by the inflow of heavy liquid if the end of the light liquid column below the water level becomes visible in the light liquid outflow tube (10).
11. The light liquid separation plant according to claim 1, characterized in that the closure member (34) of the inlet closure (31) consists of the portion (34) of a sphere which is connected to an outer lever (43) by means of a device with a cross hinge (35) with axial play and by means of an articulated shaft (39), the outer lever bringing the closure member (34) again in the position "open" after triggering.
12. The light liquid separation plant according to claims 10 and 11, characterized in that a bottom plate (40) with a flow aperture is located in the range of the water level within the housing (32) and has a sealing surface (41) provided with a two-dimensional seal having at the flow opening a small projection so that the closure member lays on the sealing surface (41) automatically and uniformly.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP95104791.9 | 1995-03-31 | ||
| EP95104791A EP0734750A1 (en) | 1995-03-31 | 1995-03-31 | Light liquid separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2191461A1 true CA2191461A1 (en) | 1996-10-03 |
Family
ID=8219146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002191461A Abandoned CA2191461A1 (en) | 1995-03-31 | 1996-03-26 | Polynucleic acids and proteins from a porcine reproductive and respiratory syndrome virus and uses thereof |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0734750A1 (en) |
| CA (1) | CA2191461A1 (en) |
| HU (1) | HUP9603308A2 (en) |
| WO (1) | WO1996030100A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103585789B (en) * | 2013-11-16 | 2016-01-13 | 康乃尔化学工业股份有限公司 | What be separated for nitrobenzene scrapes water-bound and wiper method for designing |
| CN105084538A (en) * | 2015-01-24 | 2015-11-25 | 北京博汇特环保科技有限公司 | Inlet water and muddy water mixing device for BioDopp biochemical treatment technology |
| CN112190979B (en) * | 2020-09-18 | 2022-06-17 | 中普生物制药有限公司 | Emulsion breaking separator is used in bacterin processing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2928701A1 (en) * | 1979-07-16 | 1981-02-12 | Ludwig Hunkel | Light mineral oil products separator - with inflow stop valve actuated by interface sensor |
| DE3516895A1 (en) * | 1985-05-10 | 1986-11-13 | Nikolaus 5350 Euskirchen Hammerschmitt | LIGHT LIQUID SEPARATOR |
| DE3841198A1 (en) * | 1988-12-07 | 1990-06-13 | Ossenkop Maschinenbau | Apparatus for oil separation |
| DE3918343A1 (en) * | 1989-06-06 | 1990-12-13 | Nikolaus Hammerschmitt | Liq.-liq. separator - comprising gravity separator provided with small opening equalising chamber and heavy liq. outlet |
| DE4304435A1 (en) * | 1993-02-13 | 1994-08-18 | Nikolaus Hammerschmitt | Safety mechanism against overfilling for light-liquid separators |
-
1995
- 1995-03-31 EP EP95104791A patent/EP0734750A1/en not_active Withdrawn
-
1996
- 1996-03-26 CA CA002191461A patent/CA2191461A1/en not_active Abandoned
- 1996-03-26 HU HU9603308A patent/HUP9603308A2/en unknown
- 1996-03-26 WO PCT/DE1996/000521 patent/WO1996030100A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO1996030100A1 (en) | 1996-10-03 |
| HUP9603308A2 (en) | 1998-03-02 |
| EP0734750A1 (en) | 1996-10-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |