CN110697911B - Water inlet rectifying weir plate of denitrification filter and installation and debugging method thereof - Google Patents
Water inlet rectifying weir plate of denitrification filter and installation and debugging method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2826—Anaerobic digestion processes using anaerobic filters
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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Abstract
The invention relates to the technical field of sewage treatment, in particular to a water inlet rectifying weir plate of a denitrification filter, which is formed by tangentially connecting a support plate and the outer cambered surface of an arc-shaped rectifying plate; the supporting plate is connected to the outer side of the wall of the drainage groove through a fixing bolt, and the inner arc surface of the arc-shaped rectifying plate faces to the direction opposite to the flow direction of water flow; the adjusting bolt of adjustable arc cowling panel levelness is provided with in the backup pad, and the levelness of adjustable single side weir plate of intaking and the plane degree of both sides weir plate of intaking make denitrification filter pond both sides intake weir plate water distribution uniformity. The arc-shaped rectifying plate designed by the invention can generate vortex when water flows through the arc-shaped rectifying plate by virtue of the arc-shaped design, so that the water inlet potential energy is reduced, the problem of increase of dissolved oxygen in inlet water caused by falling type inlet water is solved, the loss of a carbon source is reduced, and the biochemical treatment efficiency of denitrifying bacteria is improved.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a denitrification filter inlet water rectifying weir plate and an installation and debugging method thereof.
Background
The denitrification filter tank is a sewage biological treatment structure aiming at removing total nitrogen, a filter material is filled in the structure as a carrier, microorganisms are attached to the surface of the filter material to form a biological membrane, sewage passes through the filter material layer, and the sewage is purified by virtue of the adsorption and decomposition of the biological membrane on the surface of the filter material and the physical interception and filtration action of the filter material. Wherein, the water inlet weir plate is one of the components of the denitrification filter, and is generally a smooth iron plate made of stainless steel. The weir plate is arranged on the concrete pool wall of the water inlet channel of the filter pool, the top end of the weir plate is slightly higher than the top of the water inlet channel, and the water distribution of the sewage entering the filter pool is adjusted to achieve the effect of uniform water distribution. However, because the levelness of the weir plates on one side and the flatness of the weir plates on two sides are difficult to meet the requirements, waterfall type water inlet is formed at the water inlet weir plates, the dissolved oxygen in the water is increased, the carbon source added by the water inlet is consumed, and the biochemical treatment efficiency of the denitrifying bacteria is reduced.
The Chinese patent CN210910038788.8 discloses an arc-shaped adjustable weir plate for a deep-bed filter, which is made of plastic and has the function of guiding water flow through a top guide arc surface and a guide arc surface which are smoothly connected at the outer side, so that the water flow slowly flows into the filter, and the dissolved oxygen rising caused by a large amount of water drop is avoided. However, the arc-shaped weir plate is made of plastic, needs a certain thickness to ensure the strength, cannot ensure that water flow on the water inlet weir plate flows into the filter tank along the wall of the water inlet channel, and is difficult to realize large-size single block processing due to the manufacture of a mold, so that the cost is very high. The Chinese patent of invention CN210420800989.X discloses a rear denitrification biological filter arc top weir, wherein a longitudinal flow guide arc surface is formed on the weir plate, and the arc weir plate is extended below the water level line. The reason for the drop-type water distribution is that the drop phenomenon is caused because the design load of the water inlet weir is too high or the installation levelness and the flatness of the water inlet weir plate do not meet the requirements, so that the dissolved oxygen of the inlet water is increased. In addition, the arc weir plate extends below the water level line, so that on one hand, when the filter tank is backwashed, the weir plate and the tank body of the filter tank form a closed space to prevent pollutants from rising. On the other hand, gases such as nitrogen gas generated during the denitrification process of the filter cannot be discharged.
Aiming at the problems, the invention discloses a water inlet rectifying weir plate of a denitrification filter tank, which can effectively solve the problem of the increase of dissolved oxygen in inlet water, and meanwhile, the processing technology is simple, so that the manufacturing cost is low, and the market competitiveness is good.
Disclosure of Invention
In order to achieve the purpose, the invention provides a water inlet rectifying weir plate of a denitrification filter, which can effectively solve the problem of the increase of dissolved oxygen in inlet water, and the specific technical scheme is as follows:
device structure of water inlet rectifying weir plate
The utility model provides a denitrification filtering pond rectification weir plate that intakes, is by arc cowling panel with be used for installing the bearing structure in the drainage cell wall outside with arc cowling panel and forms, bearing structure, the intrados orientation of arc cowling panel is relative with rivers flow direction. The cambered surface of the arc-shaped rectifying plate can enable water flow in the drainage groove to generate vortex when flowing through, so that the water inlet potential energy is reduced, the problem of increase of dissolved oxygen in inlet water caused by falling type inlet water is solved, the loss of a carbon source is reduced, and the biochemical treatment efficiency of denitrifying bacteria is improved.
Further, bearing structure includes the backup pad, and the backup pad is tangent with the outer cambered surface of arc cowling panel and is connected in the drainage cell wall outside through fixing bolt.
Furthermore, the supporting structure comprises a supporting plate and a movable supporting structure, and the movable supporting structure comprises a containing sheath for installing the arc-shaped rectifying plate, a compression spring arranged between the bottom of the containing sheath and the arc-shaped rectifying plate and used for providing restoring force for the arc-shaped rectifying plate, an adjusting rod arranged on the outer side of the wall of the drainage groove and a traction rope for connection; the one end of haulage rope is passed through the couple and is connected with arc cowling panel, and the other end winding is on adjusting the pole, can adjust the height of fly leaf at any time through the rotation regulation pole, and need not to dismantle whole device, greatly reduced operating personnel's working strength.
Furthermore, the inner arc surface of the arc-shaped rectifying plate is sequentially connected with a nylon plate and a pressing plate through connecting bolts from inside to outside, the nylon plate plays a role in sealing the gap between the water inlet weir plates, and the pressing plate plays a role in fixing the arc-shaped rectifying plate.
Furthermore, the supporting plate is provided with an adjusting bolt which can adjust the levelness of the single-side water inlet weir plate and the planeness of the two-side water inlet weir plates, so that the two-side water inlet weir plates of the denitrification filter tank can distribute water uniformly.
Furthermore, a long hole is reserved on the supporting plate, so that the height of the fixing bolt can be adjusted conveniently during installation, and the levelness of the single-side water inlet weir plate and the flatness of the two side water inlet weir plates can be adjusted.
Furthermore, a rubber pad is arranged between the supporting plate and the outer side of the wall of the drainage groove for sealing the gap and ensuring the stability of the whole mechanical structure of the device.
Installation and adjustment method of device of water inlet rectifying weir plate
1) When the supporting structure is a supporting plate
S1: the rubber pad is padded between the supporting plate and the outer side of the wall of the drainage groove, and the supporting plate is fixed on the outer side of the wall of the drainage groove through a fixing bolt, so that the water inlet weir plate forms a simply supported beam structure;
s2: the connection part of the inner cambered surface of each arc-shaped rectifying plate is sequentially provided with a nylon plate and a pressing plate from inside to outside through a connecting bolt;
s3: screwing the adjusting bolt until the adjusting bolt abuts against the outer side groove wall of the drainage groove;
s4: the levelness of the single-side water inlet weir plate and the planeness of the water inlet weir plates on the two sides are adjusted through the long holes reserved on the supporting plate; the levelness requirement of the single-side water-feeding weir plate is 0.1/1000, and the levelness requirement of the two-side water-feeding weir plate is 0.2/1000;
s5: the height of the weir water head of the water inlet weir plate can be adjusted by clockwise rotating the adjusting bolt by taking the fixing bolt as a fulcrum; the rotation angle of the adjusting bolt is 0-4 degrees, and the height adjusting range of the water inlet weir plate is 0-6 mm.
2) When the supporting plate is of a sliding supporting structure
S1: the rubber pad is padded between the supporting plate and the outer side of the wall of the drainage groove, and the supporting plate is fixed on the outer side of the wall of the drainage groove through a fixing bolt, so that the water inlet weir plate forms a simply supported beam structure;
s2: a nylon plate and a pressing plate are sequentially arranged at the connection part of the inner cambered surface of each containing sheath from inside to outside through a connecting bolt;
s3: the levelness of the single-side water inlet weir plate and the planeness of the water inlet weir plates on the two sides are adjusted through the long holes reserved on the supporting plate; the levelness requirement of the single-side water-feeding weir plate is 0.1/1000, and the levelness requirement of the two-side water-feeding weir plate is 0.2/1000;
s4: the height of the weir water head on the water inlet weir plate can be adjusted by rotating the adjusting rod clockwise; the rotation angle of the adjusting rod is 0-4 degrees, and the height adjusting range of the water inlet weir plate is 0-6 mm.
Compared with the existing water inlet rectifying weir plate, the water inlet rectifying weir plate has the beneficial effects that:
(1) the invention adopts the arc-shaped rectifying weir plate, and when the inlet water flows into the arc-shaped weir plate, the inlet water is divided into the upper layer water flow and the lower layer water flow of the weir plate. When lower floor's rivers pass through the arc weir plate, along convex weir plate whirl, form on the weir plate top and can form an eddy current district, join the turbulent flow with weir plate upper strata rivers, clear up the potential energy that the laminar flow was intake, let rivers flow in the denitrification filtering pond along the weir plate, reduce because of the intake dissolved oxygen that drop-out water distribution brought, reduce the loss of carbon source, improve the biochemical treatment efficiency of denitrifying bacteria, realize simply effectively.
(2) The levelness of the single-side water inlet weir plate and the planeness of the two-side water inlet weir plates are adjusted by the adjusting bolts, so that the two-side water inlet weir plates of the denitrification filter uniformly feed water, the operation is simple and convenient, and no professional is needed.
(3) A5 mm gap is reserved between the single-side water inlet weir plates, and the nylon plate is used for sealing, so that the mutual extrusion deformation of the water inlet weir plates caused by expansion with heat and contraction with cold of metal materials is prevented, and the levelness and the flatness of the water inlet weir plates have allowable errors beyond the range.
(4) The movable support structure is designed, the weir water head can be regulated and controlled in real time according to requirements, the operation is simple and convenient, and no professional is needed.
(5) The denitrification filter tank is provided with the denitrification water inlet channel drainage guide groove, so that the water fed into the denitrification filter tank can be smoothly drained to enter the arc weir plate.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 of the present invention;
FIG. 3 is a front view of FIG. 1 of the present invention;
FIG. 4 is a schematic structural diagram of a third embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 of the present invention;
fig. 6 is a front view of fig. 4 of the present invention.
In the figure: 1-water inlet weir plate, 2-arc rectifying plate, 3-supporting structure, 31-supporting plate, 32-movable supporting structure, 321-containing sheath, 322-compression spring, 323-hauling rope, 324-hook, 4-connecting bolt, 5-adjusting bolt, 6-fixing bolt, 61-long hole, 7-nylon plate, 8-pressing plate, 9-rubber pad, 10-adjusting rod and 11-drainage groove.
Detailed Description
To further illustrate the manner in which the present invention is made and the effects achieved, the following description of the present invention will be made in detail and completely with reference to the accompanying drawings.
Example one
As shown in figure 1, the invention designs a water inlet rectifying weir plate of a denitrification filter, which consists of an arc-shaped rectifying plate 2 and a supporting structure 3 for mounting the arc-shaped rectifying plate 2 on the outer side of the wall of a drainage groove 11, wherein the inner arc surface of the arc-shaped rectifying plate 2 faces to the direction opposite to the flow direction of water flow in the supporting structure 3. The cambered surface of the arc-shaped rectifying plate 2 can enable water flow in the drainage groove 11 to generate vortex when flowing through, thereby reducing water inlet potential energy, avoiding the problem of increase of dissolved oxygen in inlet water caused by drop-type water inlet, reducing loss of carbon source and improving the biochemical treatment efficiency of denitrifying bacteria.
As shown in FIG. 2, the supporting structure 3 comprises a supporting plate 31, the supporting plate 31 is tangentially connected with the outer arc surface of the arc-shaped rectifying plate 2 and is connected with the outer side of the wall of the drainage groove 11 through a fixing bolt 6.
The cambered surface has connected gradually nylon board 7 and clamp plate 8 through connecting bolt 4 from interior to exterior in the arc cowling panel 2, nylon board 7 plays the effect in sealed water inlet weir plate 1 clearance, clamp plate 8 plays the effect of fixed arc cowling panel 2.
As shown in fig. 2-3, the support plate 31 is provided with an adjusting bolt 5, which can adjust the levelness of the single-side water inlet weir plate 1 and the flatness of the two-side water inlet weir plates 1, so as to distribute water uniformly on the two-side water inlet weir plates 1 of the denitrification filter.
The support plate 31 is reserved with a long hole 61 for adjusting the height of the fixing bolt 6 during installation, so that the levelness of the installation single-side water inlet weir plate 11 and the planeness of the water inlet weir plates 1 on two sides can be adjusted.
A rubber pad 9 is arranged between the supporting plate 31 and the outer side of the wall of the drainage groove 11 for sealing the gap and ensuring the stability of the whole mechanical structure of the device.
Example two
The second embodiment is the same as the first embodiment except that:
as shown in fig. 4-5, the supporting structure 3 comprises a supporting plate 31 and a movable supporting structure 32, wherein the movable supporting structure 32 comprises a receiving sheath 321 for mounting the arc-shaped rectifying plate 2, a compression spring 322 which is arranged between the bottom of the receiving sheath 321 and the arc-shaped rectifying plate 2 and provides restoring force for the arc-shaped rectifying plate 2, an adjusting rod 10 which is arranged outside the wall of the drainage groove 11, and a hauling cable 323 for connection; one end of the traction rope 323 is connected with the arc-shaped rectifying plate through the hook 324, the other end of the traction rope is wound on the adjusting rod 10, the height of the movable plate 21 can be adjusted at any time through rotating the adjusting rod 10, the whole device does not need to be disassembled, and the working strength of operators is greatly reduced.
EXAMPLE III
In the third embodiment, based on the structure of the first embodiment, when the supporting structure 3 is the supporting plate 31, the method for installing and adjusting the inlet flow-straightening weir plate of the denitrification filter is specifically an example of a denitrification deep-bed filter with a sewage treatment capacity of 10 ten thousand tons/day, and the size of the single-lattice filter of the denitrification deep-bed filter is L × B which is 30.48 × 3.56m, and the total size is 8.
S1: according to the size L multiplied by B of the denitrification deep bed filter pool being 30.48 multiplied by 3.56m, the water inlet channel is provided with a matched drainage groove 11.
S2: the weir plate 1 of intaking comprises arc cowling panel 2 and 3 welding of backup pad, and 3 thickness in backup pad are 3mm, fix in the 11 walls outsides of drainage groove through fixing bolt 6, and it has slot hole 61 to reserve on the weir plate 1 of intaking, adjusts the filter unilateral and both sides when being convenient for install and intakes the level of weir plate 1.
S3: rubber pads 9 are additionally clamped between the water inlet weir plate and the pool wall, and the thickness of the rubber pads 9 is 6 mm.
S4: the nylon plates 7 are fixed among the water inlet weir plates 1 through connecting bolts 4 for sealing, and then the pressing plates 8 are used for compacting and fixing to complete assembly.
S5: by rotating the adjusting bolt M12 clockwise, the simply supported water inlet weir plate 10 slightly rotates a certain angle around the simple support point, and the weir water head of the water inlet weir plate 2 is adjusted.
Treatment capacity of the single-grid denitrification filter: 100,000 ÷ 8 ≈ 12500t/d ≈ 520t/h
Single side entry weir plate flow: 520 ÷ 2 ═ 260t/h
Single-side weir plate flow per meter: 260 ÷ 30.48 ≈ 8.53t/h
Through two circles of rotation adjusting bolt M12, simply supported inlet weir board 10 rotates 2, and the weir head of inlet weir board 10 reduces 2 mm. According to a thin-wall weir flow calculation formula:
q ═ Q (1.794+0.1033/H) [1+0.55 [ (H/(H + P)) 2] × b · H (3/2)
Wherein: q is the water amount adjustment; h is weir water head; p is the height of the weir plate; and B is the width of the weir plate.
Calculated according to the weir plate height of 0.2m, the weir plate width of 1.0m and the weir water head of 0.002m, Q is 2.7 t/h. That is to say, there is 2 mm's difference in height between weir plate and the weir plate, adjusts into weir plate 1 through adjusting bolt 5, makes into the weir head of weir plate 1 and reduces 2mm, can be with the 30% inflow flow that reduces to make into the weir plate 1 water distribution even. Specific data are shown in table 1.
TABLE 1 reference table for relationship between variation of weir water head and variation of regulated water amount
Remarking: the adjusting bolt is measured according to M12 and a coarse thread pitch of 1.75 mm.
As can be seen from the data in table 1: taking an engineering denitrification deep bed filter tank of a certain sewage treatment plant for treating 10 ten thousand tons per day as an example, after the invention is adopted for complete transformation, the dissolved oxygen content of inlet water is reduced by 40-60 percent, the adding cost of a carbon source is obviously saved, and the operation cost is reduced.
Example four
In the fourth embodiment, based on the structure of the second embodiment, when the supporting structure 3 includes the supporting plate 31 and the movable supporting structure 32, the method for installing and adjusting the water inlet rectification weir plate of the denitrification filter is specifically exemplified by a denitrification deep-bed filter with a sewage treatment capacity of 10 ten thousand tons/day, and the size of the denitrification deep-bed filter is L × B ═ 30.48 × 3.56m, and is 8 in total.
S1: according to the size L multiplied by B of the denitrification deep bed filter pool being 30.48 multiplied by 3.56m, the water inlet channel is provided with a matched drainage groove 11.
S2: the weir plate 1 of intaking comprises arc cowling panel 2 and the welding of activity bearing structure 32, and arc cowling panel 2 thickness is 2mm, accomodates sheath 321 inside groove width and is 2.5mm, fixes in the 11 wall outsides of drainage groove through fixing bolt 6.
S3: rubber pads 9 are additionally clamped between the water inlet weir plate 1 and the pool wall, and the thickness of the rubber pads 9 is 6 mm.
S4: the nylon plates 7 are fixed among the water inlet weir plates 1 through connecting bolts 4 for sealing, and then the pressing plates 8 are used for compacting and fixing to complete assembly.
S5: the height of the movable plate 21 is lowered by rotating the adjusting rod 10 clockwise by a certain angle, thereby adjusting the weir head of the water inlet weir plate 1.
Treatment capacity of the single-grid denitrification filter: 100,000 ÷ 8 ≈ 12500t/d ≈ 520t/h
Single side entry weir plate flow: 520 ÷ 2 ═ 260t/h
Single-side weir plate flow per meter: 260 ÷ 30.48 ≈ 8.53t/h
The 10-degree angle of the adjusting rod is 2 degrees, so that the weir water head of the water inlet weir plate is reduced by 2 mm. According to a thin-wall weir flow calculation formula:
q ═ Q (1.794+0.1033/H) [1+0.55 [ (H/(H + P)) 2] × b · H (3/2)
Wherein: q is the water amount adjustment; h is weir water head; p is the height of the weir plate; and B is the width of the weir plate.
Calculated according to the weir plate height of 0.2m, the weir plate width of 1.0m and the weir water head of 0.002m, Q is 2.7 t/h. That is to say, there is 2 mm's difference in height between weir plate and the weir plate, adjusts into weir plate 1 through adjusting pole 10, makes into the weir head of weir plate 11 and reduces 2mm, can be with the 30% inflow flow that reduces to make into inlet weir plate 1 water distribution even. Specific data are shown in table 2.
TABLE 2 reference table for relationship between variation of weir water head and variation of regulated water amount
Remarking: the adjusting rod 10 has a diameter of 15 mm.
As can be seen from the data in table 2: taking an engineering denitrification deep bed filter tank of a certain sewage treatment plant for treating 10 ten thousand tons per day as an example, after the invention is adopted for complete transformation, the dissolved oxygen content of inlet water is reduced by 40-60 percent, the adding cost of a carbon source is obviously saved, and the operation cost is reduced.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A denitrification filter tank water inlet rectifying weir plate is composed of an arc-shaped rectifying plate (2) and a supporting structure (3) for mounting the arc-shaped rectifying plate (2) on the outer side of the wall of a drainage groove (11), wherein the inner arc surface of the arc-shaped rectifying plate (2) faces to the direction opposite to the flow direction of water flow; bearing structure (3) include backup pad (31), backup pad (31) and arc cowling panel (2) extrados tangent connection, and connect in drainage groove (11) wall outside, its characterized in that through fixing bolt (6):
the support structure (3) comprises a support plate (31) and a movable support structure (32), wherein the movable support structure (32) comprises a containing sheath (321) for installing the arc-shaped rectifying plate (2), a compression spring (322) which is arranged between the bottom of the containing sheath (321) and the arc-shaped rectifying plate (2) and provides restoring force for the arc-shaped rectifying plate (2), an adjusting rod (10) arranged on the outer side of the wall of the drainage groove (11) and a traction rope (323) for connection; one end of the traction rope (323) is connected with the arc-shaped rectifying plate through a hook (324), the other end of the traction rope is wound on the adjusting rod (10), and the height of the movable plate (21) can be adjusted through rotating the adjusting rod (10).
2. The water inlet rectifying weir plate of the denitrification filter tank according to claim 1, wherein the inner arc surface of the arc-shaped rectifying plate (2) is sequentially connected with a nylon plate (7) and a pressing plate (8) from inside to outside through a connecting bolt (4).
3. The water inlet rectifying weir plate of the denitrification filter tank is characterized in that the support plate (31) is provided with an adjusting bolt (5).
4. The denitrification filter influent rectification weir plate according to claim 1, wherein the support plate (31) is provided with a long hole (61) thereon.
5. The water inlet rectifying weir plate of the denitrification filter tank as claimed in claim 1, wherein a rubber gasket (9) is arranged between the support plate (31) and the outer side of the wall of the drainage groove (11).
6. The method for installing and debugging the water inlet rectifying weir plate of the denitrification filter tank as claimed in claim 1, which is characterized by comprising the following steps:
s1, padding a rubber pad (9) between the support plate (31) and the outer side of the wall of the drainage groove (11), and fixing the support plate (31) on the outer side of the wall of the drainage groove (11) through a fixing bolt (6) to enable the water inlet weir plate (1) to form a simple beam structure;
s2, a nylon plate (7) and a pressing plate (8) are sequentially arranged at the connection part of the inner cambered surface of each containing sheath (321) from inside to outside through a connecting bolt (4);
s3, adjusting the levelness of the single-side water inlet weir plate (1) and the flatness of the two-side water inlet weir plates (1) through the long holes (61) reserved on the supporting plate (31); the levelness requirement of the single-side water-feeding weir plate (1) is 0.1/1000, and the levelness requirement of the two-side water-feeding weir plate (1) is 0.2/1000;
s4, adjusting the height of the weir head of the water inlet weir plate (1) by rotating the adjusting rod (10) clockwise; the rotating angle of the adjusting rod (10) is 0-4 degrees, and the height adjusting range of the water inlet weir plate (1) is 0-6 mm.
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| CN204198484U (en) * | 2014-08-04 | 2015-03-11 | 江苏川源环保设备有限公司 | A kind of two-stage water inlet cloth weir board structure |
| CN204767646U (en) * | 2015-07-26 | 2015-11-18 | 北京市政建设集团有限责任公司 | Weir plate subassembly that water factory charcoal pond is adjustable |
| CN204958517U (en) * | 2015-08-03 | 2016-01-13 | 上海奥迪菲环境工程有限公司 | Dark bed filtering pond of denitrification of permanent water level and integration of change water level |
| CN108314183A (en) * | 2018-03-13 | 2018-07-24 | 太平洋水处理工程有限公司 | A kind of operation method of denitrification deep-bed filter system |
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