CN112723434A - COD treatment method for sewage - Google Patents
COD treatment method for sewage Download PDFInfo
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- CN112723434A CN112723434A CN202011395283.6A CN202011395283A CN112723434A CN 112723434 A CN112723434 A CN 112723434A CN 202011395283 A CN202011395283 A CN 202011395283A CN 112723434 A CN112723434 A CN 112723434A
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- 239000010865 sewage Substances 0.000 title claims abstract description 114
- 238000000034 method Methods 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000005484 gravity Effects 0.000 claims abstract description 9
- 230000002035 prolonged effect Effects 0.000 claims abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 41
- 239000010935 stainless steel Substances 0.000 claims description 39
- 238000004062 sedimentation Methods 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 13
- 230000000712 assembly Effects 0.000 claims description 12
- 238000000429 assembly Methods 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000002351 wastewater Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Classifications
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a sewage COD treatment method, which comprises the following steps: a plurality of supports are used for enclosing a support structure; the method comprises the following steps that a diagonal bracing structure arranged along an inclined direction is arranged inside the support structure, wherein the support structure is used for supporting the diagonal bracing structure; a filter screen is arranged on the inclined strut structure, wherein the inclined strut structure is used for supporting the filter screen; and draining the sewage onto the filter screen to filter the sewage. The invention utilizes the filter screen to hang down and stop the sewage, filters the sewage and prolongs the stop time of the sewage so as to increase the contact time of the sewage and the air, so that the oxygen in the air is dissolved in the water as much as possible to reduce the COD value, compressed air or blast air is not needed, a large amount of power consumption is saved, the occurrence probability of faults is reduced, the service life is prolonged, the maintenance amount is greatly reduced, and the working efficiency is improved; meanwhile, sewage flows from top to bottom by means of gravity, no additional power source is needed, and energy is saved.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a sewage COD treatment method.
Background
The sewage of cigarette factory mainly comes from the industrial wastewater and domestic sewage in each workshop, the ratio of BOD and COD is about 0.2, which belongs to sewage with weak biodegradability, especially the sewage with white latex discharged by glue brushing in the cigarette wrapping workshop is difficult to be degraded by microorganism, so that the pollution discharge is not up to the standard and the environment is polluted.
The prior sewage COD treatment method is characterized in that air blasting is used for pumping into sewage for aeration to reduce the sewage COD index to reach the standard, compressed air or air blasting is used although the effect is obvious, a large amount of power consumption and the operation and maintenance cost of matched equipment are needed, and meanwhile, the structure of aeration equipment is complex and is difficult to maintain when a fault occurs, so that the sewage treatment effect is influenced.
Disclosure of Invention
The invention aims to provide a sewage COD treatment method, which solves the problems in the prior art, avoids using compressed air or blast air, reduces the occurrence probability of faults, prolongs the service life and saves the power consumption.
The invention provides a sewage COD treatment method, which comprises the following steps:
a plurality of supports are used for enclosing a support structure;
the method comprises the following steps that a diagonal bracing structure arranged along an inclined direction is arranged inside the support structure, wherein the support structure is used for supporting the diagonal bracing structure;
a filter screen is arranged on the inclined strut structure, wherein the inclined strut structure is used for supporting the filter screen;
and draining the sewage onto the filter screen to filter the sewage.
The COD treatment method for sewage water as described above, wherein preferably, the enclosing of the support structure by the plurality of supports specifically includes:
forming a bracket fixing structure on the ground;
and a support structure formed by a plurality of supports in a surrounding manner is formed on the support fixing structure.
The COD treatment method for sewage water as described above, wherein preferably, the support structure formed on the support fixing structure and surrounded by a plurality of supports specifically includes:
a plurality of solid stainless steel square pipes or hollow stainless steel square pipes are used as a bracket to form a bracket structure;
connecting a plurality of brackets which enclose the bracket structure;
connecting the support structure and the support fixation structure.
The COD treatment method of sewage as described above, wherein, preferably, said bracket structure is formed by surrounding a plurality of solid stainless steel square bars or hollow stainless steel square bars, which specifically includes:
a plurality of solid stainless steel square steel or hollow stainless steel square tubes are used as supports to form a first-stage support assembly, a second-stage support assembly and a third-stage support assembly which are sequentially arranged from top to bottom.
The sewage COD treatment method as described above, wherein preferably, the inclined strut structure arranged along the inclined direction is provided inside the support structure, and specifically comprises:
and a plurality of inclined strut assemblies which are uniformly arranged in the height direction of the support structure are formed in the support structure.
The sewage COD treatment method according to the above, wherein, preferably, each of the bracing assemblies comprises two bracing members crosswise arranged inside the support structure, and each of the bracing members is made of solid stainless steel square steel or hollow stainless steel square pipe.
The sewage COD treatment method according to the above, wherein preferably, the plurality of bracing assemblies formed inside the supporting structure and evenly arranged in the height direction of the supporting structure, specifically comprises:
forming a first-stage diagonal support assembly inside the first-stage support assembly, wherein the first-stage diagonal support assembly comprises two diagonal support members which are crosswise arranged on a diagonal line of a rectangular frame of the first-stage support assembly;
forming a second-stage diagonal bracing assembly inside the second-stage support assembly, wherein the second-stage diagonal bracing assembly comprises two diagonal bracing members crosswise arranged on a diagonal line of a rectangular frame of the second-stage support assembly;
and forming a third-stage diagonal bracing assembly inside the third-stage support assembly, wherein the third-stage diagonal bracing assembly comprises two diagonal bracing members which are arranged on a diagonal line of a rectangular frame of the third-stage support assembly in a crossed manner.
The COD treatment method of sewage as described above, wherein preferably, the arranging a filter screen on the bracing structure specifically comprises:
a filter screen is arranged on the surface of each inclined strut component;
set up every the edge of the filter screen on bracing subassembly surface sets up filter screen fixed knot structure respectively, in order to right the filter screen with the bracing subassembly is fixed.
The COD treatment method of wastewater as described above, wherein, preferably, the strainer comprises a stainless steel mesh, and the mesh number of the stainless steel mesh is 60-100 mesh.
The COD treatment method for sewage water as described above, wherein preferably, the drainage of sewage water onto the filter screen to filter sewage water includes:
pretreating sewage in an inclined tube sedimentation tank;
discharging the pretreated sewage from an overflow pipe of the inclined pipe sedimentation tank;
draining the pretreated wastewater discharged from the overflow pipe onto the filter screen;
under the action of gravity, sewage drained to the filter screen passes through the filter screen on the inclined strut structure supported by the outer frame bracket and is hung and stayed on the filter screen so as to filter the sewage, and the staying time of the sewage is prolonged so as to increase the contact time of the sewage and air;
if the COD value of the filtered sewage reaches the standard, the sewage enters an underground water pool;
if the COD value of the filtered sewage does not reach the standard, the pretreatment and the filtration are carried out again.
The invention provides a sewage COD treatment method, sewage passes through a filter screen on an inclined strut structure supported by an outer frame bracket under the action of gravity, is hung and stayed on the filter screen, is filtered, and prolongs the staying time of the sewage so as to increase the contact time of the sewage and air, so that oxygen in the air is dissolved in the water as much as possible to reduce the COD value, compressed air or blast air is not needed, a large amount of power consumption is saved, the occurrence probability of faults is reduced, the service life is prolonged, the maintenance amount is greatly reduced, and the working efficiency is improved; meanwhile, sewage flows from top to bottom by means of gravity, no additional power source is needed, and energy is saved.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings, in which:
FIG. 1 is a flow chart of an embodiment of a method for COD treatment of wastewater according to the present invention;
FIGS. 2A to 2C are a front view, a left side view and a top view of an embodiment of a sewage COD treatment apparatus according to the present invention, respectively;
FIG. 3 is a schematic flow chart of COD treatment of sewage by using the embodiment of the method for COD treatment of sewage provided by the present invention.
Description of reference numerals:
1-support structure 2-inclined strut structure 3-filter screen
11-primary rack assembly 12-secondary rack assembly 13-tertiary rack assembly
21-first stage diagonal bracing assembly 211-diagonal bracing member 22-second stage diagonal bracing assembly
23-third stage diagonal bracing assembly
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.
As used in this disclosure, "first", "second": and the like, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the present disclosure, when a specific component is described as being located between a first component and a second component, there may or may not be intervening components between the specific component and the first component or the second component. When it is described that a specific component is connected to other components, the specific component may be directly connected to the other components without having an intervening component, or may be directly connected to the other components without having an intervening component.
All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
As shown in fig. 1, an embodiment of the present invention provides a sewage COD treatment method, which is implemented based on a sewage COD treatment apparatus, as shown in fig. 2A to 2C, the sewage COD treatment apparatus includes a support structure 1 surrounded by a plurality of supports, a bracing structure 2 obliquely disposed inside the support structure 1, and a filter screen 3 disposed on the bracing structure 2, wherein the support structure 1 is configured to support the bracing structure 2, the bracing structure 2 is configured to support the filter screen 3, and the filter screen 3 is configured to filter sewage and prolong a retention time of the sewage, so as to increase a contact time between the sewage and air.
As shown in fig. 1, the method for treating COD in sewage provided by this embodiment specifically includes the following steps:
and step S1, enclosing the support structure 1 by using a plurality of supports.
As shown in fig. 3, the supporting structure 1 is disposed above the ground and near the tail of the overflow pipe of the inclined tube sedimentation tank, and in one embodiment of the sewage COD treatment method of the present invention, the step S1 may specifically include:
and step S11, forming a bracket fixing structure on the ground.
The bracket fixing structure may be, for example, a concrete structure formed by a casting process, and the specific casting process may refer to the prior art, which is not described in detail herein. For better fixing effect, the size of the concrete structure is slightly larger than that of the bottom of the support structure, and taking the length of the support structure as 1m and the width as 0.8m as an example, the length of the concrete structure can be 1.2m and the width can be 1 m.
And step S12, forming a support structure 1 formed by a plurality of supports on the support fixing structure.
In an embodiment of the method for treating COD in sewage of the present invention, the step S12 may specifically include:
step S121, a plurality of solid stainless steel square steel or hollow stainless steel square tubes are used as supports to form a support structure 1 in a surrounding mode.
Preferably, the solid stainless steel square or hollow stainless steel square tube used for the support structure 1 has a side length of 60mm to 100mm, and as an example and not limitation, a stainless steel square tube having a side length of 80mm and a wall thickness of 5mm may be used. As shown in fig. 2A, the support structure 1 is formed by a plurality of supports, and the plurality of supports are connected to each other by welding. Further, the length of the stent structure 1 is 0.8m to 1.2m, the width is 0.6m to 1m, and the height is 1.8m to 2.4m, preferably, in the present invention, the length of the stent structure is 1m, the width is 0.8m, and the height is 2.1 m. It should be noted that the support structure of the present invention may also be made of stainless steel square or square tubes of other sizes, or may be made of other materials, for example, non-stainless steel materials, and the surface of the support structure may be subjected to corrosion protection treatment.
In a specific implementation, a plurality of solid stainless steel square pipes or hollow stainless steel square pipes can be used as the support to enclose a first-stage support assembly 11, a second-stage support assembly 12 and a third-stage support assembly 13 which are sequentially arranged from top to bottom. The inclined strut structure 2 arranged along the inclined direction is arranged in the support structure 1.
And S122, connecting a plurality of brackets which surround the bracket structure 1.
And S123, connecting the support structure 1 with the support fixing structure.
The connection between the stent anchoring structure and the stent structure 1 may be, for example, by means of an expansion screw.
Step S2, providing the bracing structure 2 arranged along the inclined direction inside the support structure 1, wherein the support structure 1 is used for supporting the bracing structure 2.
In a specific implementation, a plurality of bracing assemblies uniformly arranged in the height direction of the support structure 1 are formed inside the support structure 1. Each inclined strut assembly comprises two inclined strut members which are arranged in the support structure in a crossed mode, and each inclined strut member is made of solid stainless steel square steel or hollow stainless steel square tubes. Preferably, the solid stainless steel square tube or the hollow stainless steel square tube used for the bracing structure 2 has a side length of 40mm-80mm, and as an example and not limitation, a stainless steel square tube having a side length of 60mm and a wall thickness of 5mm may be used. It should be noted that the support structure and the diagonal bracing structure may also be made of stainless steel square steel or square steel with other dimensions, or may also be made of other materials, for example, non-stainless steel materials may be used, and the surface of the support structure and the diagonal bracing structure may be subjected to corrosion protection treatment.
As shown in fig. 2A to 2C, in an embodiment of the method for treating COD in sewage according to the present invention, the step S2 may specifically include:
step S21, forming a first-stage diagonal bracing assembly 21 inside the first-stage bracing assembly 11, wherein the first-stage diagonal bracing assembly 21 includes two diagonal bracing members 211 crosswise disposed on the diagonal line of the rectangular frame of the first-stage bracing assembly 11.
Step S22, forming a second-stage diagonal bracing assembly 22 inside the second-stage bracing assembly 12, wherein the second-stage diagonal bracing assembly includes two diagonal bracing members 211 crosswise disposed on the diagonal of the rectangular frame of the second-stage bracing assembly 12.
Step S23, forming a third-stage diagonal bracing assembly 23 inside the third-stage bracing assembly, wherein the third-stage diagonal bracing assembly 23 includes two diagonal bracing members 211 crosswise disposed on the diagonal of the rectangular frame of the third-stage bracing assembly 13.
Taking the length of the support structure as 1m, the width as 0.8m and the height as 2.1m as an example, the support structure is equally divided every 0.7m in the height direction, and the support structure is split into three support assemblies. The first stage sprag assembly 21 includes two sprag members 211 arranged crosswise on the diagonal of the rectangular frame of the first stage bracket assembly 11. In operation, sewage is discharged from an overflow pipe of the inclined pipe sedimentation tank, then passes through the first-stage inclined strut assembly 21, the second-stage inclined strut assembly 22 and the third-stage inclined strut assembly 23 in sequence, and then enters an underground water tank. The number of the bracket assemblies, the number of the diagonal brace assemblies, the positional relationship between the diagonal brace assemblies and the bracket assemblies, the positional relationship between two diagonal brace members in the same diagonal brace assembly, and the like are not particularly limited in the present invention.
Further, the bracing structure 2 is connected to the supporting structure 1 by welding or is connected to the supporting structure 1 by fasteners, such as stainless steel screws. Specifically, the first-stage diagonal bracing assembly 21 is connected with the first-stage support assembly 11 through a welding mode or a fastening piece, the second-stage diagonal bracing assembly 22 is connected with the second-stage support assembly 12 through a welding mode or a fastening piece, and the third-stage diagonal bracing assembly 23 is connected with the third-stage support assembly 13 through a welding mode or a fastening piece
Step S3, arranging a filter screen 3 on the inclined strut structure 2, wherein the inclined strut structure 2 is used for supporting the filter screen 3.
In an embodiment of the method for treating COD in sewage of the present invention, the step S3 may specifically include:
and step S31, respectively arranging a filter screen 3 on the surface of each inclined strut component.
Wherein, the filter screen 3 comprises a stainless steel net, and the mesh number of the stainless steel net is 60-100 meshes.
And step S32, respectively arranging a filter screen fixing structure at the edge of the filter screen on the surface of each inclined strut component so as to fix the filter screen 3 and the inclined strut component.
Specifically, all be provided with filter screen 3 on every bracing subassembly surface, setting up every the edge of the filter screen 3 on bracing subassembly surface can use thin stainless steel wire to fix filter screen 3 and every bracing subassembly to make filter screen 3's edge level and smooth, avoid sticking up the limit, can guarantee like this that sewage is the filter screen smoothly. The method for fixing the filter screen is not particularly limited, and the filter screen may be fixed by using a non-stainless steel wire and performing an anti-corrosion treatment on the surface thereof, or by using a beading screw, a beading strip, or the like.
And step S4, draining the sewage onto the filter screen 3 to filter the sewage.
In an embodiment of the method for treating COD in sewage of the present invention, the step S4 may specifically include:
and step S41, pretreating the sewage in the inclined tube sedimentation tank.
The sewage is pretreated in the inclined tube sedimentation tank, and flows from bottom to top in the inclined tubes of the inclined tube sedimentation tank.
And step S42, discharging the pretreated sewage from an overflow pipe of the inclined pipe sedimentation tank.
The sewage after pretreatment is discharged from the overflow pipe, and impurities in the sewage are settled by means of gravity, so that the sewage in the inclined tube sedimentation tank is closer to the overflow pipe, the impurity concentration in the sewage is lower, and the water quality is clearer and clearer.
And step S43, draining the pretreated sewage discharged from the overflow pipe onto the filter screen 3.
As shown in FIG. 3, during the operation, the pretreated sewage discharged from the overflow pipe of the inclined tube sedimentation tank is guided to the filter screen of the sewage COD treatment method. It should be noted that the distance between the overflow pipe and the filter screen is required to ensure that the sewage does not splash.
Step S44, the sewage drained to the filter screen 3 is hung and stayed on the filter screen 3 through the filter screen 3 on the inclined strut structure 2 supported by the outer frame support 1 under the action of gravity so as to filter the sewage and prolong the staying time of the sewage so as to increase the contact time of the sewage and the air.
And step S45, if the COD value of the filtered sewage reaches the standard, entering an underground water pool.
And step S46, if the COD value of the filtered sewage does not reach the standard, carrying out pretreatment and filtration again.
If the COD value does not reach the standard, the sewage treatment device can enter the inclined tube sedimentation tank and the sewage COD treatment device again for further treatment, and the sewage treatment device enters the underground water tank until the COD value in the filtered sewage reaches the standard.
According to the sewage COD treatment method provided by the embodiment of the invention, sewage passes through the filter screen on the inclined strut structure supported by the outer frame bracket under the action of gravity, is hung and stayed on the filter screen, is filtered, and the retention time of the sewage is prolonged, so that the contact time of the sewage and air is increased, oxygen in the air is dissolved in the water as much as possible to reduce the COD value, compressed air or blast air is not needed, and a large amount of power consumption is saved; because the support structure, the inclined strut structure and the filter screen are all fixed structures, the occurrence probability of faults is reduced, the service life is prolonged, the maintenance amount is greatly reduced, and the working efficiency is improved; meanwhile, sewage flows from top to bottom by means of gravity, no additional power source is needed, and energy is saved.
Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (10)
1. A sewage COD treatment method is characterized by comprising the following steps:
a plurality of supports are used for enclosing a support structure;
the method comprises the following steps that a diagonal bracing structure arranged along an inclined direction is arranged inside the support structure, wherein the support structure is used for supporting the diagonal bracing structure;
a filter screen is arranged on the inclined strut structure, wherein the inclined strut structure is used for supporting the filter screen;
and draining the sewage onto the filter screen to filter the sewage.
2. The sewage COD treatment method of claim 1, wherein the plurality of supports are used to form a support structure, and the method specifically comprises the following steps:
forming a bracket fixing structure on the ground;
and a support structure formed by a plurality of supports in a surrounding manner is formed on the support fixing structure.
3. The sewage COD treatment method of claim 2, wherein the bracket fixing structure is formed with a bracket structure surrounded by a plurality of brackets, and the method specifically comprises the following steps:
a plurality of solid stainless steel square pipes or hollow stainless steel square pipes are used as a bracket to form a bracket structure;
connecting a plurality of brackets which enclose the bracket structure;
connecting the support structure and the support fixation structure.
4. The COD treatment method for sewage according to claim 3, wherein the bracket structure formed by surrounding a plurality of solid stainless steel square steel or hollow stainless steel square tubes as brackets specifically comprises:
a plurality of solid stainless steel square steel or hollow stainless steel square tubes are used as supports to form a first-stage support assembly, a second-stage support assembly and a third-stage support assembly which are sequentially arranged from top to bottom.
5. The sewage COD treatment method of claim 4, wherein the inclined strut structure arranged along the inclined direction is arranged in the support structure, and the method specifically comprises the following steps:
and a plurality of inclined strut assemblies which are uniformly arranged in the height direction of the support structure are formed in the support structure.
6. The wastewater COD treatment method of claim 5, wherein each of the bracing assemblies comprises two bracing members crosswise arranged inside the support structure, and each of the bracing members is made of solid stainless steel square steel or hollow stainless steel square pipe.
7. The sewage COD treatment method of claim 5, wherein the plurality of bracing assemblies uniformly arranged in the height direction of the support structure are formed inside the support structure, and the method specifically comprises the following steps:
forming a first-stage diagonal support assembly inside the first-stage support assembly, wherein the first-stage diagonal support assembly comprises two diagonal support members which are crosswise arranged on a diagonal line of a rectangular frame of the first-stage support assembly;
forming a second-stage diagonal bracing assembly inside the second-stage support assembly, wherein the second-stage diagonal bracing assembly comprises two diagonal bracing members crosswise arranged on a diagonal line of a rectangular frame of the second-stage support assembly;
and forming a third-stage diagonal bracing assembly inside the third-stage support assembly, wherein the third-stage diagonal bracing assembly comprises two diagonal bracing members which are arranged on a diagonal line of a rectangular frame of the third-stage support assembly in a crossed manner.
8. The COD treatment method of sewage according to claim 5, wherein said diagonal bracing structure is provided with a filter screen, specifically comprising:
a filter screen is arranged on the surface of each inclined strut component;
set up every the edge of the filter screen on bracing subassembly surface sets up filter screen fixed knot structure respectively, in order to right the filter screen with the bracing subassembly is fixed.
9. The wastewater COD treatment method according to claim 8, wherein the screen comprises a stainless steel mesh, and the mesh number of the stainless steel mesh is 60-100 mesh.
10. The COD treatment method for sewage according to claim 1, wherein said directing the sewage onto said screen to filter the sewage specifically comprises:
pretreating sewage in an inclined tube sedimentation tank;
discharging the pretreated sewage from an overflow pipe of the inclined pipe sedimentation tank;
draining the pretreated wastewater discharged from the overflow pipe onto the filter screen;
under the action of gravity, sewage drained to the filter screen passes through the filter screen on the inclined strut structure supported by the outer frame bracket and is hung and stayed on the filter screen so as to filter the sewage, and the staying time of the sewage is prolonged so as to increase the contact time of the sewage and air;
if the COD value of the filtered sewage reaches the standard, the sewage enters an underground water pool;
if the COD value of the filtered sewage does not reach the standard, the pretreatment and the filtration are carried out again.
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