Systems, methods, and devices for removing contaminants from rainwater

Abstract

A rainwater treatment device can include a chamber having a floor and a wall, an inlet formed in the wall that receives rainwater into an inlet side of the chamber, an outlet formed in the wall that discharges rainwater from an outlet side of the chamber, an enhanced settling device positioned in the outlet side of the chamber, a flow diverter plate in a lower portion of the chamber, and an outlet control diverter positioned proximate the outlet. Rainwater is received by the inlet in a first flow direction, flows from the inlet side to the lower portion of the chamber in a second flow direction, flows through the enhanced settling device to an upper portion of the chamber in a third flow direction, flows through the outlet control diverter in a fourth flow direction, and is discharged by the outlet in a fifth flow direction.

Description

Technical Field

[0001] This disclosure generally relates to systems, methods, and apparatus for removing contaminants from rainwater. Background Technology

[0002] When it rains, rainwater travels across various surfaces before reaching the sewers. Along its path, rainwater picks up and suspends contaminants (natural and man-made) and transports them to the sewers. The sewers provide the first opportunity to remove some of these contaminants from rainwater before it continues its journey to water bodies. Summary of the Invention

[0003] Systems, methods, and apparatus for removing pollutants from rainwater are disclosed.

[0004] According to an embodiment, a rainwater treatment device may include: a chamber having a bottom plate and walls; an inlet formed in the walls, the inlet receiving rainwater into an inlet side of the chamber; an outlet formed in the walls, the outlet discharging rainwater from an outlet side of the chamber; a vertical baffle dividing at least a portion of the chamber into an inlet side and an outlet side, wherein the inlet side and the outlet side are in fluid communication; and an enhanced settling device positioned in the outlet side of the chamber, wherein a portion of the chamber below the bottom of the enhanced settling device... The chamber includes a lower portion defining the lower portion of the chamber, and a portion of the chamber above the top of the enhanced settling device defining an upper portion of the chamber; a flow deflector plate in the lower portion of the chamber; and an outlet control deflector positioned near the outlet; wherein rainwater is received by the inlet in a first flow direction, flows from the inlet side to the lower portion of the chamber in a second flow direction, flows through the enhanced settling device to the upper portion of the chamber in a third flow direction, flows through the outlet control deflector in a fourth flow direction, and is discharged from the outlet in a fifth flow direction.

[0005] In one embodiment, the rainwater treatment device may further include one or more blades positioned on the vertical baffle, wherein the plurality of blades extend into the inlet side of the chamber.

[0006] In one embodiment, the horizontal blade may be positioned on the vertical baffle and may extend into the inlet side of the chamber. Furthermore, a plurality of vertical blades may be provided, and these vertical blades may extend from the ends of the horizontal blades.

[0007] In one embodiment, the enhanced settling device may include a plurality of tubes, each tube being positioned at an angle from the wall toward the vertical baffle. In one embodiment, the angle may be different for each tube, or for the plurality of tubes, etc.

[0008] In one embodiment, the enhanced settling device may include a plurality of tubes, with a first subset of the plurality of tubes positioned at a first angle to the horizontal plane and a second subset of the plurality of tubes positioned at a second angle to the horizontal plane.

[0009] In one embodiment, the top of the enhanced sedimentation device may be located below the lower surface of the outlet control steering device.

[0010] In one embodiment, rainwater with a flow rate higher than a certain value flows over the vertical baffle.

[0011] In one embodiment, the outlet control deflector may include a bottom component and two vertical side components, wherein an opening for receiving rainwater is defined by the bottom component, at least one of the vertical side components, and the wall.

[0012] In one embodiment, the change in flow direction optimizes the time the rainwater spends in the chamber.

[0013] In one embodiment, the chamber is cylindrical.

[0014] According to another embodiment, a method for removing suspended pollutants from rainwater may include: (1) receiving rainwater containing suspended pollutants at an inlet of a rainwater treatment device, wherein the rainwater flows into the inlet side of the rainwater treatment device and the fluid velocity of the rainwater is reduced; (2) receiving the rainwater in a lower portion of the rainwater treatment device; (3) receiving the rainwater from the lower portion in an enhanced sedimentation device, wherein the rainwater is redirected to flow upward along the enhanced sedimentation device into the upper portion of the chamber on the outlet side of the chamber; (4) receiving the rainwater from the upper portion at an outlet control deflector, wherein the rainwater is redirected to be received by the outlet control deflector; and (5) discharging the rainwater at an outlet.

[0015] In one embodiment, the enhanced settling device may include a plurality of tubes, with a first subset of the plurality of tubes positioned at a first angle to the horizontal plane and a second subset of the plurality of tubes positioned at a second angle to the horizontal plane.

[0016] In one embodiment, the top of the enhanced sedimentation device may be located below the lower surface of the outlet control steering device.

[0017] In one embodiment, rainwater with a flow rate higher than a certain value flows into the upper part of the rainwater treatment device above the vertical baffle.

[0018] In one embodiment, the outlet control deflector may include a bottom component and two vertical side components, wherein an opening for receiving rainwater is defined by the bottom component, at least one of the vertical side components, and the wall.

[0019] In one embodiment, the change in flow direction optimizes the time the rainwater spends in the chamber.

[0020] In one embodiment, the chamber is cylindrical.

[0021] According to another embodiment, a system for removing contaminants from rainwater may include: a chamber having a horizontal base plate and a vertical wall attached to the base plate, wherein the chamber wall forms a cylinder, and an inlet and an outlet are on opposite sides of the cylinder; an inlet in one wall for receiving contaminated rainwater and an outlet in the wall for discharging treated rainwater; and a vertical baffle in the chamber, the baffle being perpendicular to a vertical plane bisecting the inlet and dividing the chamber into an inlet side and an outlet side, wherein the outlet side is located between the baffle and the outlet opening. The inlet side is fluidly connected between the baffle and the inlet opening; a stack of layered tubes is positioned in the outlet side, wherein the long axis of each tube is angled to a horizontal plane that is substantially perpendicular to a vertical plane bisecting the inlet, wherein the top of the tube stack is at least 6 inches below the inverted portion of the outlet; one or more flow deflectors are attached to the wall of the chamber on the outlet side below the stack of layered tubes; and a flow deflector is placed at the inlet of the outlet.

[0022] In one embodiment, the walls of the chamber may be formed into a rectangular prism structure.

[0023] In one embodiment, the angle between the vertical plane bisecting the inlet and the vertical plane bisecting the outlet is between 45 degrees and 315 degrees.

[0024] In one embodiment, the top of the vertical baffle is positioned horizontally above the inverted portion of the inlet pipe, such that at flow rates exceeding the design flow rate, water will pass over the top of the vertical baffle.

[0025] In one embodiment, the bottom of the vertical baffle is at least 2 feet from the bottom of the chamber.

[0026] In one embodiment, the vertical baffle may have one or more blades extending vertically from the baffle toward the inlet.

[0027] In one embodiment, at least two blades can extend 1-5 inches from the baffle.

[0028] In one embodiment, the at least two blades are positioned 3-6 inches from the point where the baffle meets the wall of the tank on each side of the baffle, such that the arrangement of the blades is symmetrical about a vertical plane bisecting the inlet.

[0029] In one embodiment, the long axis of each tube is at an angle of 50 to 70 degrees to the horizontal plane, and the direction of this angle is between 45 and 135 degrees to the vertical plane that bisects the inlet.

[0030] In one embodiment, the bottom of the stack of layered tubes is above the bottom of the vertical baffle.

[0031] In one embodiment, the flow deflector is planar, and at least one plate is attached to the wall below the outlet such that the plate has the same centerline as the outlet and forms an angle between 45 and 135 degrees with respect to the horizontal plane. A second flow deflector may be attached to the wall in the angular direction of the layered tube such that the centerline of the plate coincides with the centerline of the wall. A third flow deflector may be attached to the wall opposite to the second flow deflector such that the centerline of the plate coincides with the centerline of the wall. The second and third flow deflectors may or may not form the same angle with the first flow deflector with respect to the horizontal plane, within the range of 45 to 135 degrees. In one embodiment, more than one flow deflector may be manufactured as a single piece.

[0032] In one embodiment, the arc height of each flow steering plate can be between 3 inches and 14 inches.

[0033] In one embodiment, the flow deflector at the outlet may include a horizontal bottom component at the same height as the outlet inverted portion and two vertical side components. A first vertical side component protrudes from one side of the outlet opening, parallel to a vertical plane that bisects the outlet, and a second vertical side component is substantially perpendicular to the first vertical side component and parallel to a tangent to the chamber wall at the midpoint of the outlet. The bottom component and the two vertical side components form an opening through which water can reach the outlet opening.

[0034] In one embodiment, the second vertical side component may be curved.

[0035] In one embodiment, the flow deflector at the outlet may include a first vertical side component protruding at least 6 inches from one side of the outlet opening and a second vertical side component with a length of at least 8 inches. The flow deflector at the outlet may also include two vertical side components protruding upward from the horizontal side component at least 4 inches.

[0036] In one embodiment, the flow deflector at the outlet may include an opening through which water can reach the outlet opening, the outlet opening being on the side of the outlet opposite the angle to the layered tube, such that water flowing through the tube must reverse direction at least twice in order to enter the opening in the flow deflector.

[0037] In one embodiment, the flow deflector at the outlet may include an opening through which water can reach an outlet opening at least 6 inches wide. Attached Figure Description

[0038] To gain a more complete understanding of this disclosure, its purpose and advantages, reference is now made to the following description taken in conjunction with the accompanying drawings:

[0039] Figure 1 An isometric view of a rainwater treatment apparatus according to an embodiment is depicted;

[0040] Figure 2A and Figure 2B An exemplary blade implementation according to the embodiments is depicted;

[0041] Figure 3 The following is a description of the embodiments. Figure 1 Side view of a rainwater treatment device;

[0042] Figure 4 The following is a description of the embodiments. Figure 1 A front view of the rainwater treatment device;

[0043] Figure 5 A plan view of a first flow steering device, a second flow steering device, and a third flow steering device according to an embodiment is depicted;

[0044] Figure 6 The following is a description of the embodiments. Figure 1 A plan view of the rainwater treatment system;

[0045] Figure 7 A cross-sectional view of a layered tube according to one embodiment is shown;

[0046] Figure 8 A side view of a layered tube according to one embodiment is shown;

[0047] Figure 9An isometric view of a rainwater treatment apparatus according to another embodiment is depicted;

[0048] Figure 10 Depicting according to Figure 9 A side view of the rainwater treatment apparatus of an embodiment, showing the interior of the inner chamber; and

[0049] Figure 11 A method for removing contaminants from rainwater according to one embodiment is described. Detailed Implementation

[0050] The embodiments relate to systems for removing contaminants from rainwater. (Reference) Figure 1-8 The document provides a view of a rainwater treatment apparatus according to an embodiment.

[0051] The rainwater treatment device 100 may define a chamber including an inlet 105, an outlet 110, a wall 115, a vertical baffle 120, one or more flow deflectors 130, and an outlet control deflector 135. In one embodiment, rainwater carrying contaminants may enter the inlet 105 and flow to the lower portion 150 of the rainwater treatment device 100. In one embodiment, depending on the inflow velocity of the rainwater, the rainwater may impinge on the vertical baffle 120, slow down, and flow downwards.

[0052] In one embodiment, the distance between the vertical baffle 120 and the inlet 105 can be a balance between having more elements in the enhanced settling device 125 and having an opening that allows for cleaning and maintenance. A smaller distance can provide better performance, but may make cleaning and maintenance more difficult. In addition, a smaller distance may also increase scouring.

[0053] In one embodiment, the vertical baffle 120 may be positioned and / or sized such that the top of the vertical baffle 120 is at a height above the invert of the inlet 105, such that rainwater will pass over the top of the vertical baffle 120 at flow rates exceeding the design flow rate.

[0054] The vertical baffle 120 can divide the chamber defined by the rainwater treatment device 100 into an inlet side and an outlet side.

[0055] In one embodiment, the bottom of the vertical baffle 120 may be positioned to optimize water flow in the lower portion 150 of the rainwater treatment device 100, and may depend on the size of the rainwater treatment device 100. In one embodiment, the bottom of the vertical baffle 120 may be at least two feet from the bottom of the rainwater treatment device 100. Other placements may be used as needed and / or desired.

[0056] Rainwater can continue from the lower portion 150 of the rainwater treatment device 100 to the upper portion 155. In one embodiment, an enhanced settling device 125 (such as a layered tube) can be positioned between the lower portion 150 and the upper portion 155.

[0057] In one embodiment, the enhanced sedimentation device 125 may include a plurality of sheets, each sheet having angled ridges. In one embodiment, the sheets may be positioned such that the ridges in adjacent sheets are parallel, thereby forming a tube angularly positioned to a vertical plane. In another embodiment, the sheets may be positioned such that the ridges in adjacent sheets are perpendicular, thereby creating a series of tortuous paths.

[0058] In one embodiment, the bottom of the enhanced settling device 125 may be above the bottom of the vertical baffle 120.

[0059] One or more flow deflectors 130, 131, and 132 may be provided in the lower portion 150 of the rainwater treatment device 100 and may deflect the flow of untreated rainwater, allowing suspended contaminants more time to dislodge. In one embodiment, flow deflectors 130, 131, and / or 132 may further prevent incoming untreated rainwater from resuspending contaminants.

[0060] In one embodiment, flow deflectors 130, 131, and / or 132 may be plates. In one embodiment, the plates may be planar. In one embodiment, a second flow deflector (131) may be attached to the wall 115 in the angular direction of the layered tube such that the centerline of the second flow deflector coincides with the centerline of the wall 115. A third flow deflector 132 may be attached to the wall 115 opposite to the second flow deflector 131 such that the centerline of the third flow deflector coincides with the centerline of the wall 115. Two or more flow deflectors may be manufactured as a single piece. The arc height of each flow deflector may be between 3 inches and 30% of the distance to the opposite wall or baffle. For example, 14 inches may be the upper limit for a 48-inch diameter tank.

[0061] The outlet control deflector 135 can further restrict the flow of rainwater before it can leave the outlet 110. In one embodiment, the outlet control deflector can prevent rainwater from flowing directly from the lower portion 150 to the upper portion 155 and out of the outlet 110 without changing its flow direction. The outlet control deflector 135 can further allow suspended contaminants to fall off from the suspension.

[0062] The exit control steering 135 may be planar and may be attached to the wall 115 below the exit 110, such that the exit control steering 135 plate has the same centerline as the exit 110 and the exit control steering 135 forms an angle of 45 degrees to 135 degrees with the horizontal plane.

[0063] The outlet control deflector 135 may include a horizontal bottom component and two vertical side components at the same height as the inverted portion of outlet 110. A first vertical side component may project from one side of outlet 110 and may be substantially parallel to the vertical plane bisecting outlet 110. A second vertical side component may be substantially perpendicular to the first vertical side component and parallel to a tangent to the wall 115 obtained at the centerline of the outlet. The bottom component and the two vertical side components form an opening through which water can reach outlet 110. In one embodiment, each vertical side component may project at least 4 inches from the horizontal side component.

[0064] While the dimensions of the outlet control deflector 135 and its components can vary based on the size of the rainwater treatment device 100, in one embodiment, the first vertical side component may protrude at least 6 inches from one side of the outlet 110, and the length of the second vertical component may be at least 8 inches. The dimensions can vary with the size of the rainwater treatment device 100, where, generally, larger devices have larger components, and smaller devices have smaller components. In one embodiment, the second vertical side component may be curved. The size of the side components can be selected to maximize the path length to the outlet 110 while still maintaining proximity to the size of the outlet 110.

[0065] In one embodiment, the maximum dimension of the vertical plane perpendicular to the inlet 105 can be equal to or less than the maximum dimension of the vertical plane parallel to the inlet 105. For example, the length between the inlet 105 and the outlet 110 can be greater than the width of the chamber. This may be useful, for example, if the chamber is rectangular in shape. The angle between the vertical plane bisecting the inlet 105 and the vertical plane bisecting the outlet 110 can be between 45 degrees and 315 degrees. Other angles can be used as needed and / or as desired.

[0066] refer to Figure 7 and Figure 8 This provides exemplary details regarding the enhanced precipitation apparatus 125 according to embodiments. The enhanced precipitation apparatus 125 may include a plurality of layered tubes. The layered tubes may have any suitable shape; in one embodiment, such as Figure 7 As shown, the layered tubes can be hexagonal in shape. Other tube shapes, such as rectangular, parallelogram, circular, etc., can also be used. In one embodiment, the size of each tube can be selected to minimize the height of each channel provided by the tube, which minimizes the settlement distance.

[0067] In one embodiment, the layered tubes in the enhanced settling device 125 may be positioned at an angle to the horizontal plane. In one embodiment, water flowing through the enhanced settling device 125 must reverse direction at least twice in order to enter the opening in the outlet control deflector 135. For example, rainwater reverses direction as it travels from the lower portion 150 through the enhanced settling device 125 to the upper portion 155 and then again from the enhanced settling device 125 to the outlet 110. The outlet deflector 135 may require another change of direction.

[0068] In one embodiment, the angle can be selected to optimize and enhance the settling and self-cleaning of the pipe in the settling device 125. For example, the angle can be between 45 degrees and 75 degrees. Other angles can be used as needed and / or desired.

[0069] In one embodiment, the layered tubes in the enhanced settling device 125 can be positioned at different angles relative to the horizontal plane. For example, a first subset of the layered tubes can be positioned at a first angle to the horizontal plane, a second subset of the layered tubes can be positioned at a second angle to the horizontal plane, and so on. One or more angles can be selected as needed and / or desired.

[0070] In one embodiment, such as Figure 2A As shown, the vertical baffle 120 may include one or more blades 140 that can extend downward from the top of the vertical baffle 120 on the inlet side, and the one or more blades 140 help prevent the formation of eddies in the flow on the inlet side. For example, the blades 140 may extend outward from the baffle by a distance of 1-5 inches and extend 12-36 inches below the top of the vertical baffle 120. The size of the blades 140 may vary depending on the size of the rainwater treatment device 100. In one embodiment, at least one blade 140 may be positioned at least 3 inches from the point where the baffle 120 meets the wall of the rainwater treatment device 100, while another blade 140 may be positioned at least 3 inches from the point where the baffle 120 meets the wall of the rainwater treatment device 100 on the other side. Any arrangement of the blades 140 may be symmetrical about a vertical plane that bisects and is perpendicular to the vertical baffle 120.

[0071] In another embodiment, such as Figure 2B As shown, the blade 140 can be provided to have a horizontal orientation.

[0072] The rainwater treatment device 100 can be configured to change the direction of water flow within the rainwater treatment device 100 multiple times. The purpose of changing the direction is to optimize the time that rainwater spends within the rainwater treatment device 100. Because gravity settling takes time, and because volume and flow rate may be limited by the size of the rainwater treatment device 100, this change of direction utilizes the volume within the rainwater treatment device 100 as efficiently as possible.

[0073] refer to Figure 9 and Figure 10 Isometric views and cross-sectional views of a rainwater treatment apparatus according to another embodiment are provided. The rainwater treatment apparatus 900 may define a chamber including an inlet 905, an outlet 910, a wall 915, an inner chamber wall 960, and a support 965. In one embodiment, rainwater carrying contaminants may enter the inlet 905 and fall into the outer chamber 950 of the rainwater treatment apparatus 900. The rainwater may then flow through an enhanced sedimentation device 925 into the inner chamber 955 of the rainwater treatment apparatus 900, and may then exit via the outlet 910.

[0074] It should be recognized that, in alternative embodiments, the enhanced sedimentation device 925 may be provided in the outer chamber 950 of the rainwater treatment device, and rainwater may be supplied to the inner chamber 965 of the rainwater treatment device 900 via the inlet 905. An outlet 910 may be provided to the outer chamber 950 such that when rainwater flows through the enhanced sedimentation device 925, it exits the rainwater treatment device 900 via the outlet 910.

[0075] The enhanced sedimentation device 925 can be similar to the enhanced sedimentation device 125 described above.

[0076] refer to Figure 11 A method for removing contaminants from rainwater according to one embodiment is disclosed.

[0077] In step 1105, rainwater carrying pollutants flows into the inlet side of the rainwater treatment device, where expansion allows the fluid velocity to decrease.

[0078] In step 1110, rainwater flows into the lower part of the rainwater treatment device unless the flow exceeds a specific design flow rate. For example, if the flow exceeds the specific design flow rate, the amount of rainwater exceeding the specific design flow rate will flow over the baffle and directly into the upper part of the rainwater treatment device, while the remainder of the flow will flow into the lower part of the rainwater treatment device.

[0079] In step 1115, rainwater flows into the lower section, and pollutants can be released from the suspension due to gravity settling. The settled pollutants will accumulate in the lower section of the rainwater treatment device.

[0080] In step 1120, rainwater changes direction and can flow upwards along enhanced settling devices, such as layered tubes. These tubes provide shorter settling distances, which reduces the time required for settling. This facilitates the settling of smaller particles. Particles settling in the enhanced settling devices eventually fall into the lower part of the rainwater treatment unit.

[0081] In step 1125, the rainwater leaves the enhanced sedimentation device and changes direction in the upper part of the rainwater treatment device.

[0082] In step 1130, rainwater reaches the outlet flow deflector and can flow out from the outlet. In one embodiment, the outlet flow deflector is configured to allow the rainwater to change direction again before leaving via the outlet.

[0083] Those skilled in the art will understand that the present invention is not limited to the content specifically shown and described above. Rather, the scope of the invention includes combinations and sub-combinations of the features described above, as well as variations and modifications thereof that are not found in the prior art. It should also be recognized that these embodiments are not exclusive to each other.

[0084] Those skilled in the art will readily understand that the embodiments disclosed herein are readily available for widespread use and application. Many embodiments and adaptations of the invention, as well as numerous variations, modifications, and equivalent arrangements, other than those described herein, will be apparent or reasonably implied from the invention and its foregoing description without departing from the spirit or scope of the invention.

[0085] Therefore, although the invention has been described in detail herein with respect to exemplary embodiments thereof, it should be understood that this disclosure is merely illustrative and exemplary, and is intended to provide a feasible disclosure of the invention. Consequently, the foregoing disclosure is not intended to be construed as limiting the invention or otherwise excluding any other such embodiments, adaptations, variations, modifications, or equivalent arrangements.

Claims

1. A rainwater treatment device, comprising: A chamber having a floor and walls; An inlet, formed in the wall, receives rainwater into the inlet side of the chamber; An outlet, formed in the wall, discharges rainwater from the outlet side of the chamber; A vertical baffle divides at least a portion of the chamber into an inlet side and an outlet side, wherein the inlet side and the outlet side are in fluid communication; An enhanced settling device is positioned in the outlet side of the chamber, wherein a portion of the chamber below the bottom of the enhanced settling device defines a lower portion of the chamber, and a portion of the chamber above the top of the enhanced settling device defines an upper portion of the chamber, wherein the enhanced settling device includes a plurality of tubes, and a first subset of the plurality of tubes is positioned at a first angle to a horizontal plane, and a second subset of the plurality of tubes is positioned at a second angle to the horizontal plane; A flow deflector plate in the lower portion of the chamber; as well as An outlet control deflector is positioned near the outlet, wherein the outlet control deflector includes a bottom part and two vertical side parts, wherein an opening for receiving rainwater into the outlet control deflector is defined by the bottom part, one of the vertical side parts, and the wall; Rainwater is received by the inlet in a first flow direction, flows from the inlet side to the lower part of the chamber in a second flow direction, flows through the enhanced settling device to the upper part of the chamber in a third flow direction, flows through the outlet control deflector in a fourth flow direction, and is discharged from the outlet in a fifth flow direction.

2. The rainwater treatment device according to claim 1, further comprising: A plurality of generally vertical blades are positioned on the vertical baffle, wherein the plurality of generally vertical blades extend into the inlet side of the chamber.

3. The rainwater treatment device according to claim 1, further comprising: Horizontal blades, which are positioned on the vertical baffle. The horizontal blade extends into the inlet side of the chamber.

4. The rainwater treatment apparatus according to claim 1, wherein the first subset provides a plurality of first water paths, and the second subset provides a plurality of second water paths.

5. The rainwater treatment device according to claim 1, wherein the top of the enhanced settling device is below the lower surface of the outlet control deflector.

6. The rainwater treatment apparatus of claim 1, wherein the vertical baffle is configured such that rainwater having a flow rate higher than a certain value flows over the vertical baffle to the outlet side.

7. The rainwater treatment apparatus according to claim 1, wherein the change in flow direction optimizes the time the rainwater spends in the chamber.

8. The rainwater treatment device according to claim 1, wherein the chamber is cylindrical.

9. A rainwater treatment device, comprising: A chamber having a floor and walls; An inlet, formed in the wall, receives rainwater into the inlet side of the chamber; An outlet, formed in the wall, discharges rainwater from the outlet side of the chamber; A vertical baffle divides at least a portion of the chamber into an inlet side and an outlet side, wherein the inlet side and the outlet side are in fluid communication; A horizontal blade, the horizontal blade being positioned on the vertical baffle, wherein the horizontal blade extends into the inlet side of the chamber; Multiple vertical blades, wherein the multiple vertical blades extend from the ends of the horizontal blades; An enhanced settling device is positioned in the outlet side of the chamber, wherein a portion of the chamber below the bottom of the enhanced settling device defines a lower portion of the chamber, and a portion of the chamber above the top of the enhanced settling device defines an upper portion of the chamber, wherein the enhanced settling device includes a plurality of tubes, a first subset of the plurality of tubes being positioned at a first angle to a horizontal plane, and a second subset of the plurality of tubes being positioned at a second angle to the horizontal plane; A flow deflector plate in the lower portion of the chamber; as well as An exit control steering device is positioned near the exit; Rainwater is received by the inlet in a first flow direction, flows from the inlet side to the lower part of the chamber in a second flow direction, flows through the enhanced settling device to the upper part of the chamber in a third flow direction, flows through the outlet control deflector in a fourth flow direction, and is discharged from the outlet in a fifth flow direction.

10. The rainwater treatment device according to claim 9, further comprising: A plurality of generally vertical blades are positioned on the vertical baffle, wherein the plurality of generally vertical blades extend into the inlet side of the chamber.

11. The rainwater treatment apparatus of claim 9, wherein the first subset provides a plurality of first water paths, and the second subset provides a plurality of second water paths.

12. The rainwater treatment apparatus of claim 9, wherein the different flow directions optimize the time the rainwater spends in the chamber.

13. A method for removing suspended pollutants from rainwater using the rainwater treatment apparatus according to claim 1, comprising: The rainwater treatment device receives rainwater containing suspended pollutants at its inlet, wherein the rainwater treatment device has a chamber with a base plate and walls, wherein the rainwater flows into the inlet side of the rainwater treatment device and the flow velocity of the rainwater is reduced. The rainwater is received in the lower part of the rainwater treatment device; The rainwater is received from the lower portion in the enhanced settling device, wherein the rainwater changes direction to flow upward along the enhanced settling device into the upper portion of the chamber on the outlet side of the chamber, wherein the enhanced settling device includes a plurality of tubes, a first subset of the plurality of tubes being positioned at a first angle to the horizontal plane, and a second subset of the plurality of tubes being positioned at a second angle to the horizontal plane. The rainwater is received at the outlet control deflector from the upper portion, the outlet control deflector comprising a bottom part and two vertical side parts, wherein an opening for receiving rainwater leading to the outlet control deflector is defined by one of the bottom part and the vertical side parts, wherein the rainwater changes its flow direction to be received by the outlet control deflector; and The rainwater is discharged at the outlet; Rainwater with a flow rate higher than a certain value flows above the vertical baffle.

14. The method of claim 13, wherein the first subset provides a plurality of first water paths and the second subset provides a plurality of second water paths.

15. The method of claim 13, wherein the top of the enhanced settling device is below the lower surface of the outlet control steering device.

16. The method of claim 13, wherein the change in flow direction optimizes the time the rainwater spends in the chamber.

17. The method of claim 13, wherein the chamber is cylindrical.

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