Construction wastewater treatment device and method

Abstract

The present invention relates to the field of wastewater treatment technology, and more specifically to a construction wastewater treatment device and method, comprising a primary filtration treatment unit, a coagulation reaction treatment unit, a sedimentation treatment unit, a microbial decomposition treatment unit, and a fine filtration treatment unit. A filter tank is installed in the filter tank of the primary filtration treatment unit and the fine filtration treatment unit. Vertical plates are provided on both sides of the filter tank feed port. One side of the vertical plate is damped and hingedly connected to a water-passing plate that contacts two inclined walls of a flow divider. An upper telescopic plate and a lower telescopic plate are provided above each inclined wall. The lower telescopic plate has a comb-tooth structure at its end. Vertical baffles are provided on both sides of the top of the flow divider. Each baffle has a gear rod connected to its bottom end. An inverted V-shaped hollow spring plate is provided between the two rows of gear rods on the left and right sides. When the filtered material pushes the lower telescopic plate to rotate, the main electromagnet is energized to cause the lower telescopic plate to push the water-passing plate open. The present invention uses a multi-stage treatment process to filter out various impurities, combining flocculation, sedimentation, and biodegradation to fully purify the water.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and in particular to a device and method for treating construction wastewater. Background Art

[0002] Construction wastewater differs from general wastewater in that its composition is more complex, making it difficult to purify it effectively with equipment that only handles wastewater. Construction wastewater contains a variety of pollutants, primarily including common construction waste residues. In addition to broken bricks, stones, silt, building material packaging fragments, and metal scraps, it also contains domestic waste generated at the construction site, such as food packaging bags, beverage bottles, and food scraps. In other words, all sorts of garbage and waste end up in the wastewater at the construction site.

[0003] In addition, these wastewaters contain other types of suspended solids, including ammonia nitrogen, total phosphorus, animal and vegetable oils, grease generated during machinery use, and organic matter such as paint. For example, some construction machinery may leak oil during use, resulting in wastewater containing floating oil, dispersed oil, and emulsified oil. Phenols are also produced. For example, some construction processes may generate phenolic wastewater, which is harmful to the environment and human health.

[0004] The sources of water are mainly concrete maintenance wastewater, building materials cleaning wastewater, and domestic sewage from construction workers at the construction site, plus rainwater accumulation. Due to the diversity and particularity of these water sources, the wastewater at the construction site contains the above-mentioned diverse pollutants, especially the types, shapes, and sizes of garbage and waste residues. This makes it difficult to use existing treatment equipment to directly filter out and separate them. Therefore, more refined wastewater treatment equipment is needed for sufficient purification. Summary of the Invention

[0005] The purpose of the present invention is to provide a construction wastewater treatment device and method, which solves the problem that wastewater generated at construction sites is difficult to purify quickly and fully due to its complex composition.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a construction wastewater treatment device, which mainly includes a primary filtration treatment part, a coagulation reaction treatment part, a sedimentation treatment part, a microbial decomposition treatment part and a fine filtration treatment part connected in sequence. The primary filtration treatment part and the fine filtration treatment part both include a filter tank, and a filter bin is installed in the filter tank. The top of the filter bin has a feed port, and vertical plates are provided on both sides of the feed port. A horizontally arranged water-passing plate is damped and hinged on one side of the top of the vertical plate, and one side of the two water-passing plates is respectively in contact with the bottom ends of the two inclined walls of a fluid distributor, and the fluid distributor is located at the upper end center of the feed port; one side of each of the inclined walls is also provided with an upper telescopic plate installed on the rotating part. and a lower telescopic plate, the end of the lower telescopic plate is a comb tooth structure, and the end of the comb tooth structure is in contact with the inclined wall; vertical baffles are respectively provided on both sides of the top of the diverter body, and the bottom end of each baffle is connected to a tooth rod in contact with the inclined wall, and between the two rows of tooth rods on the left and right sides, there is a hollow spring plate in an inverted V shape covering the top surface of the diverter body; when the filtered material accumulated on the comb tooth structure is large enough to push the lower telescopic plate to rotate downward, a main electromagnet located below the rotating part is energized to attract the lower telescopic plate, causing the lower telescopic plate to rotate to a position where it pushes up the water flow plate below it, and at this time the upper telescopic plate rotates; a fine filter is connected to the inner surface of the spring plate of the fine filtration treatment part and between two adjacent teeth of the comb tooth structure.

[0007] Among them, the coagulation reaction treatment part includes a coagulation reaction tank, a reagent addition tank and a steel fence assembly. The inlet end of the coagulation reaction tank is connected to the first output pipe installed on the side wall of the filter tank; the inlet end of the coagulation reaction tank is also connected to the reagent addition tank through a flow meter to quantitatively deliver the reagent. The steel fence assembly can be vertically installed in the coagulation reaction tank to separate the coagulation reaction tank into several sub-reaction chambers.

[0008] Among them, the sedimentation treatment part includes a sedimentation tank, which is connected to the outlet of the coagulation reaction treatment part through a second output pipe. The outlet end of the second output pipe is coaxially located in a vibration-damping tube with a closed bottom, and is spaced opposite to a conical slider supported by a conical spring in the vibration-damping tube. The vibration-damping tube is fixed in the upper central position inside the sedimentation tank, and a diverter plate is coaxially fixed to the top port of the vibration-damping tube. The diverter plate is threadedly fitted on the vibration-damping tube, and the height of the diverter plate must be lower than the top port of the vibration-damping tube. The diverter plate is also connected to a supporting ring coaxially fixed on the vibration-damping tube through a cylindrical spring that is always in a compressed state.

[0009] It also includes a controller, a liquid level meter installed in the sedimentation tank, and a cylindrical gear driven by a micro motor. The diverter plate is a gear plate structure, and the diverter plate is always engaged with the cylindrical gear. The controller drives the micro motor to rotate according to the liquid level detected by the liquid level meter so that the installation height of the bottom end surface of the diverter plate is always consistent with the liquid level in the sedimentation tank.

[0010] Among them, the microbial decomposition processing part includes a microbial decomposition tank, a rotating column, a plate rack and a biofilm. The plate rack is a rectangular frame structure. The biofilm is covered and installed on the two side surfaces of the plate rack. The plate rack is fixed on the rotating column in a circular array. The rotating column is intermittently rotated and installed in the microbial decomposition tank. When the rotating column rotates, each plate rack can expose the pool mouth of the microbial decomposition tank in turn and completely.

[0011] Furthermore, the rotating part includes a fixedly installed core column and a rotating sleeve installed on the core column with damped rotation, the rotating sleeve is respectively fixedly installed with the upper telescopic plate and the lower telescopic plate along its radial direction, and a first conductor is embedded in one end of the lower telescopic plate located on the inner side of the rotating sleeve. When the end side surface of the lower telescopic plate contacts the limiting protrusion on the side wall of the core column, the first conductor contacts the second conductor on the core column, and the main electromagnet is powered off at this time. When the two conductors are separated, the main electromagnet is powered on to attract the lower telescopic plate.

[0012] wherein, a secondary electromagnet is provided in the lower telescopic plate, and the lower telescopic plate is located in the rotating sleeve, and one end of the lower telescopic plate is provided with an arc-shaped inner rack and the first conductor side by side along the axial direction of the core column, and the lower telescopic plate is elastically and telescopically inserted into the inner plug plate for extrusion contact with the inclined wall; a fan gear is rotatably installed in the installation cavity at the side surface of the core column, and one side of the fan gear is exposed to the side surface of the core column, and an insulating partition block is fixed in the installation cavity, and arc springs connected to the two side surfaces of the fan gear are respectively provided on both sides of the partition block, and a third conductor is provided inside the arc spring on the side of the upper telescopic plate, and an arc guide rod is provided inside the other end, the third conductor is fixed on the partition block, and the arc guide rod is fixed on the side surface of the fan gear, so that when the main electromagnet is de-energized, the rotating sleeve is reversed, and when the inner rack is meshed with the fan gear, the arc guide rod is inserted into the third conductor and maintains contact, at this time, the secondary electromagnet is energized to attract the inner plug plate.

[0013] Furthermore, a hinge shaft is fixed on one side of the water pass plate, the end of the hinge shaft extends out of the side wall of the filter tank, and a threaded blind hole is provided at its end; it also includes a first gear fixedly mounted on the rotating sleeve, and a second gear mounted on the end of the hinge shaft, the second gear is coaxially fixed with a locking stud for cooperating with the threaded blind hole, the locking stud is threadedly mounted in a fixed threaded mounting sleeve, the first gear and the second gear are meshed through a linear rack, so that when the rotating sleeve rotates as the lower telescopic plate abuts against the main electromagnet, the locking stud is completely unscrewed from the threaded blind hole.

[0014] Among them, there is an arc-shaped groove at the inner axis of the spring plate, and a lifting rod with a lifting ring is fixed at the center of the top of the outer side of the spring plate; the top of the two baffles is connected to a horn cover, and a conical drainage cover is fixed on the edge of the large port on the top of the horn cover, and the edge of the conical drainage cover is tilted downward.

[0015] Based on the above-mentioned construction wastewater treatment device, the present invention also proposes a construction wastewater treatment method, which mainly adopts the above-mentioned construction wastewater treatment device for treatment, and specifically includes the following steps:

[0016] First, construction wastewater is transported to the primary filtration treatment section. During the transport process, when the amount of construction waste accumulated on the spring plate reaches a level that requires cleaning, the spring plate is lifted upward. When the spring plate jumps out of the upper ends of the two baffles, it opens to both sides due to its elastic reset effect, and the construction waste on its surface is thrown out to both sides. The construction waste remaining on the spring plate is manually removed in a timely manner. When the construction waste accumulated on the comb structure reaches a certain amount, it automatically slides downward and enters the filter chamber below the opened water flow plate. When the construction waste in the filter chamber is full, it is removed and poured out.

[0017] Then, the wastewater flowing out of the primary filtration treatment section enters the coagulation reaction treatment section, where a flocculant is added to form agglomerated flocs in the wastewater, and then the wastewater is discharged into a sedimentation tank, where the flocs gradually sink to form sediment.

[0018] Finally, the upper layer of liquid in the sedimentation tank is discharged into the microbial decomposition treatment part, and after being decomposed by microorganisms, it is discharged into the fine filtration treatment part for final filtration and purification.

[0019] The invention provides a construction wastewater treatment device and method, which adopts multiple groups of wastewater treatment equipment to carry out multi-stage purification treatment processes and combine physical, chemical and biological treatment methods.

[0020] Specifically, the primary filtration unit and the fine filtration unit serve as the front and back physical filtration steps of the entire treatment process. The primary filtration unit automatically removes large debris and household garbage from construction wastewater, facilitating centralized storage. While the spring plate, toothed rod, and comb structure are components of a single filter, they effectively provide a three-stage filtration effect, effectively removing correspondingly sized debris and garbage from the wastewater. This facilitates the full flocculation reaction in the subsequent chemical treatment process, while the fine filtration unit further removes fine impurities from the water after decomposition by the microbial decomposition unit. The sedimentation unit prevents vibration during water inflow, maintaining the stability of the sedimentation layer and facilitating wastewater clarification and stratification. While removing organic matter from the water, the aerobic microorganisms in the microbial decomposition unit intermittently come into contact with air, increasing dissolved oxygen levels and accelerating the microbial decomposition process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0022] Figure 1 1 is a front view of a primary filtration treatment unit and a fine filtration treatment unit in one embodiment of the present invention;

[0023] Figure 2 yes Figure 1 A magnified view of the structure at point A;

[0024] Figure 3 yes Figure 2 A magnified view of the structure at B in the middle;

[0025] Figure 4 yes Figure 3 A magnified view of the structure at D in the middle;

[0026] Figure 5 yes Figure 2 A magnified view of the structure at C in the middle;

[0027] Figure 6 It is a cross-sectional view of one end of the lower telescopic plate extending into the rotating sleeve;

[0028] Figure 7 yes Figure 3 A partial schematic diagram of the core column in the figure with E pointing upward;

[0029] Figure 8 It is a schematic diagram of the comb structure;

[0030] Figure 9 It is a kind of internal cross-sectional view of a sedimentation tank;

[0031] Figure 10It is a cross-sectional view of the interior of a microbial decomposition tank;

[0032] Figure 11 It is a schematic diagram of the meshing of the gear rack structure;

[0033] Figure 12 This is a schematic diagram of the installation transmission of the locking stud;

[0034] Figure 13 This is a schematic diagram showing that a threaded blind hole is provided at the end of the hinge shaft of the water pass plate.

[0035] In the figure: filter tank 1, filter bin 2, feed port 201, first conveying pipe 3, vertical plate 4, water plate 5, hinge shaft 501, threaded blind hole 50101, lower telescopic plate 6, comb structure 601, inner insert plate 602, outer plate 603, compression spring 604, upper telescopic plate 7, diverter 8, inclined wall 801, gear rod 9, baffle 10, spring plate 11, arc groove 1101, main electromagnet 12, core column 13, installation cavity 1301, sealing strip 14, first conductor 15, second conductor 16, auxiliary electromagnet 17, arc spring 18, separator 19, first Three conductors 20, arc-shaped guide rod 21, sector gear 22, inner rack 23, sedimentation tank 24, vibration damping tube 25, diverter plate 26, cylindrical spring 27, conical slider 28, conical spring 29, cylindrical gear 30, liquid level gauge 31, microbial decomposition tank 32, rotating column 33, plate frame 34, rotating sleeve 35, first gear 36, linear rack 37, second gear 38, threaded mounting sleeve 39, locking stud 40, horn cover 41, conical drainage cover 42, lifting rod 43, hanging ring 44, metal rod 45, conductor column 46, load-bearing ring 50, and limiting protrusion 51. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0037] As one of the specific embodiments of the present invention, a construction wastewater treatment device is described in detail. Its main components include a primary filtration treatment unit, a coagulation reaction treatment unit, a sedimentation treatment unit, a microbial decomposition treatment unit, and a fine filtration treatment unit, which are connected in sequence. The primary filtration treatment unit is used to filter out some larger garbage and waste residues in the construction wastewater, such as some wood blocks, cement bag fragments, and other packaging fragments of construction and daily necessities. The coagulation reaction treatment unit is used to add a coagulant to form suspended matter in the construction wastewater into larger flocs, facilitating further precipitation and separation of the corresponding waste components in the subsequent sedimentation treatment unit. The microbial decomposition treatment unit utilizes the action of microorganisms to decompose organic matter in the construction wastewater into inorganic matter, reducing the degree of pollution. For example, the decomposition treatment can be carried out aerobically or anaerobicly. Finally, the biologically decomposed construction wastewater flows into the fine filtration treatment unit, where it is finely filtered to obtain clean water.

[0038] In the above structural design, specifically, Figure 1-Figure 5 As shown, both the primary filtration and fine filtration sections of this embodiment include a filter tank 1. A first output pipe is connected to the sidewall of the filter tank 1 to discharge the initially filtered wastewater. A filter chamber 2, densely dotted with permeable holes, is installed within the filter tank 1. A feed port 201 is located at the top of the filter chamber 2, allowing the initially filtered construction waste to slide in and temporarily store it. Furthermore, vertical panels 4 are located on either side of the feed port 201. Vertical panels 4 are installed vertically in an upper position within the filter tank 1. When the filter tank 1 is a rectangular box, the centers of its front and rear sidewalls protrude upward, and the front and rear sides of the vertical panels 4 are fixedly attached to the inner surfaces of the front and rear sidewalls of the filter tank 1. A horizontally disposed water plate 5 is hingedly connected to one side of the top of the vertical panel 4. Specifically, one side of the water plate 5 is hingedly mounted using conventional components such as torsion springs, ensuring that the water plate 5 remains horizontal under normal conditions and has a certain load-bearing capacity, allowing the initially filtered wastewater to flow along the water plate 5. On the side of the two water-passing plates 5 away from the hinged end, they are respectively in contact with the bottom ends of the two inclined walls 801 of a diverter 8. Specifically, the top of the diverter 8 can be an isosceles triangle. Figure 2-Figure 3 As shown, the right side of the left-side water-passing plate 5 contacts the bottom of the slanted wall 801 on the left side of the flow divider 8. The flow divider 8 is located at the upper center of the feed inlet 201, effectively achieving bidirectional flow diversion. Above each slanted wall 801, an upper telescopic plate 7 and a lower telescopic plate 6 are mounted on a rotating portion. The upper and lower telescopic plates 7 and 6 can rotate synchronously, and the ends of the lower telescopic plate 6 are formed into a comb-tooth structure 601. The ends of the comb-tooth structure 601 contact the slanted wall 801 to filter the wastewater flowing through the comb-tooth structure 601 and remove some waste residue. A sealing strip 14 is fixed along the edge of the upper telescopic plate 7.

[0039] In particular, the matching installation structure of the rotating part and the lower telescopic plate 6 in the above embodiment can be implemented with reference to the following structure:

[0040] like Figure 3-Figure 4 As shown, the rotating part includes a fixedly mounted core column 13, and a rotating sleeve 35 mounted on the core column 13 in a damped rotation manner. The core column 13 can be fixed on an adaptively designed frame (not shown in the figure) on the outside of the filter tank 1, or even fixed on the corresponding side wall of the filter tank 1. The connection between the rotating sleeve 35 and the core column 13 can also adopt a damping hinge or damping rotation installation composed of existing components such as torsion springs, so that under normal conditions, the position of the rotating sleeve 35 on the core column 13 causes the lower telescopic plate 6 and the inclined wall 801 mentioned later to be squeezed into contact. Specifically, the rotating sleeve 35 is fixedly mounted with an upper telescopic plate 7 and a lower telescopic plate 6 along its radial direction, and both telescopic plates can be used as shown in the following example. Figure 3 The structure shown is an inner insert plate 602 connected by a compression spring 604 and slidingly inserted into an outer plate 603. A first conductor 15 is embedded in one end of the lower telescopic plate 6 located inside the rotating sleeve 35. When the end side of the lower telescopic plate 6 contacts the limiting protrusion 51 on the side wall of the core column 13, the first conductor 15 contacts the second conductor 16 on the core column 13, and the main electromagnet 12 is de-energized. In practice, a short-circuit design can be used. When the two conductors contact, a loop is formed that short-circuits the working circuit of the main electromagnet 12, thereby causing the main electromagnet 12 to be de-energized. In fact, one of the two conductors can also be regarded as a control button. That is, the first conductor 15 is protruding and contacts the second conductor 16. When pressed, the main electromagnet 12 is de-energized. When the two conductors separate, the button rebounds, and the main electromagnet 12 is energized, attracting the lower telescopic plate 6. Here, the aforementioned short-circuit design is recommended as the simplest and most effective.

[0041] Also, see Figure 3-Figure 4 As shown, a secondary electromagnet 17 is provided in the lower telescopic plate 6. This secondary electromagnet 17 is mainly used to control the above-mentioned inner plug-in plate 602. Figure 6At one end of the lower telescopic plate 6 located within the rotating sleeve 35, an arcuate inner rack 23 and a first conductor 15 are arranged side by side along the axial direction of the core column 13. The inner insert plate 602 is elastically and telescopically inserted into the lower telescopic plate 6 for compressive contact with the inclined wall 801. A sector gear 22 is rotatably mounted within a mounting cavity 1301 on the side of the core column 13. One side of the sector gear 22 is exposed from the side of the core column 13. An insulating spacer 19 is fixed within the mounting cavity. Arc springs 18 are attached to the sides of the spacer 19, respectively, and are connected to the side surfaces of the sector gear 22 to control the initial position of the sector gear 22. A third conductor 20 is installed within one end of the arc spring 18 on the side of the upper telescopic plate 7. The third conductor 20 is a curved cylindrical body with an arcuate guide rod 21 at its other end. The third conductor 20 is fixed to the spacer 19 and has a curved axial hole at its end for insertion into the arcuate guide rod 21. One end of the arc-shaped guide rod 21 is fixed to the side surface of the sector gear 22 so that when the main electromagnet 12 is powered off, the rotating sleeve 35 automatically reverses and resets under the action of a component such as a torsion spring. During this period, the inner rack 23 is engaged with the sector gear 22, and the arc-shaped guide rod 21 is inserted into the third conductor 20 and maintains contact. At this time, the auxiliary electromagnet 17 is energized, thereby attracting the inner insert plate 602, causing the lower telescopic plate 6 to shorten immediately so that it can be rotated out of the above-mentioned discharge port. Once the inner rack 23 is disengaged from the sector gear 22, the arc-shaped guide rod 21 immediately disengages from the axial hole of the third conductor 20, the auxiliary electromagnet 17 is powered off, and the inner insert plate 602 of the lower telescopic plate 6 can maintain extrusion contact with the inclined wall 801, so as to restore its function of filtering out construction waste. In the above embodiment, the third conductor 20 and the second conductor 16 can each be connected to a conductor post 46 via a metal rod 45. The conductor post 46 is in an energized state. By connecting the conductor post 46, the third conductor 20 or the second conductor 16 is energized, and then the corresponding electromagnet is energized.

[0042] In the above embodiment, if the torsion force of the damping hinged element such as the torsion spring is insufficient, in order to improve the ability of the water plate 5 to maintain the horizontal initial state, that is, to improve its water passing capacity, the following can be done: Figure 13 As shown, a hinge shaft 501 is fixed on one side of the water-passing plate 5, the end of which extends out of the side wall of the filter tank 1, and a threaded blind hole 50101 is provided at the end of the hinge shaft 501. Figure 11-12, further comprising a first gear 36 fixedly mounted on the rotating sleeve 35, and a second gear 38 mounted at the end of the hinge shaft 501. A locking stud 40, adapted to engage with a threaded blind hole 50101, is coaxially secured to the second gear 38. The locking stud 40 is threadedly mounted within a fixedly mounted threaded mounting sleeve 39, which can be mounted on the aforementioned frame or other component. The first gear 36 and the second gear 38 are meshed via a linear rack 37, such that when the rotating sleeve 35 rotates as the lower telescopic plate 6 abuts against the main electromagnet 12, the locking stud 40 is completely unscrewed from the threaded blind hole 50101, thereby releasing the water-passing plate 5. Conversely, when the rotating sleeve 35 rotates relative to itself and returns to its original position, the locking stud 40 is screwed into the hinge shaft 501 and secured there, i.e., screwed to the bottom of the threaded blind hole 50101.

[0043] In this embodiment, vertical baffles 10 are also required on either side of the top of the flow divider 8. These baffles 10 and the front and rear sidewalls of the filter tank 1 form a channel for wastewater to flow into, with wastewater flowing into the center of this channel. Alternatively, additional perpendicular front and rear side panels (not shown) may be provided between the two baffles 10, with the side panels parallel to the front and rear sidewalls of the filter tank 1, to form the aforementioned channel within the filter tank 1. In this case, this channel can be directly connected to the wastewater delivery pipeline. In this embodiment, a toothed rod 9 is also connected to the bottom end of each baffle 10, contacting the inclined wall 801. Adjacent toothed rods 9 also form a comb-like structure, but the gap between the toothed rods 9 is larger than the gap between adjacent teeth in the comb-tooth structure 601, thereby achieving different filtering capabilities. In the above structural design, a hollow spring plate 11 in an inverted V shape is provided between the two rows of gear rods 9 on the left and right sides, covering the top surface of the diverter 8. This spring plate 11 also plays a filtering role, and the two sides are free to stretch, just covering the corresponding surface of the top of the diverter 8. When too much waste residue accumulates on the spring plate 11, the spring plate 11 is lifted up, and the two sides of the spring plate 11 are squeezed and contacted with the gear rods 9 and the baffles 10 in turn. Finally, when it leaves between the two baffles 10, the filtered waste residue is instantly thrown outwards, that is, the two side plates of the spring plate 11 flip upwards and return to the stretched free state. Specifically, Figure 5 The inner axis of the spring plate 11 has an arc-shaped groove 1101, which is conducive to elastic deformation. A lifting rod 43 with a lifting ring 44 is fixed at the center of the top outside of the spring plate 11. The spring plate 11 can be lifted by hooking the lifting ring 44. A trumpet cover 41 with a rectangular cross-section is connected to the top of the two baffles 10. A conical drainage cover 42 with a rectangular cross-section is fixed to the edge of the large port on the top of the trumpet cover 41. The edge of the conical drainage cover 42 is tilted downward so that the discarded construction waste can be discharged along the trumpet cover 41 to the corresponding external components for transportation.

[0044] In the above embodiment, when more and more filtered matter accumulates on the comb-tooth structure 601 of the lower telescopic plate 6, it will exert an increasingly greater squeezing force on the lower telescopic plate 6, thereby pushing the lower telescopic plate 6 to rotate downward at a certain moment. Moreover, during the downward flipping process, when it flips to a certain angle, a main electromagnet 12 located below the rotating part will be energized, thereby instantly attracting the lower telescopic plate 6, causing the lower telescopic plate 6 to continue to rotate rapidly to a position where it contacts the electromagnet or other limiting elements. This position is, for example, when the lower telescopic plate 6 is in a vertical position. Thus, under the action of elasticity, when it freely extends, it can quickly push open the water-passing plate 5 below it, allowing the construction waste intercepted by the lower telescopic plate 6 to slide directly into the feed port 201 of the filter bin 2, thereby achieving the purpose of centralized collection of construction waste. Moreover, because the upper telescopic plate 7 rotates synchronously therewith and rotates to the original position of the lower telescopic plate 6, the lower telescopic plate 6 is not water-permeable, so it can prevent the wastewater from continuing to flow downward, so that the wastewater can only flow away from the inclined wall 801 on the other side. In this way, the two comb-tooth structures 601 on both sides can temporarily alternately work. Because the main electromagnet 12 is set to be energized for a short time each time, even if the lower telescopic plates 6 on both sides rotate downward synchronously, the impact on wastewater treatment is not significant, and this special situation rarely occurs. In the above embodiments, the set time for each energization of the main electromagnet 12 can be flexibly selected or set based on multiple tests. For example, if the main electromagnet 12 is energized for 7 seconds, after 7 seconds, the magnetism disappears, and the lower telescopic plate 6 will promptly reverse and reset under the action of its damping hinge, or for example, under the action of the aforementioned torsion spring, causing the water flow plate 5 to reverse and reset to the horizontal position, restoring normal water flow. Regarding the two-stage filtration assembly, namely the primary filtration treatment section and the fine filtration treatment section, the difference is that the inner surface of the spring plate 11 of the fine filtration treatment section and the comb tooth structure 601 are connected to a fine filter screen (not shown in the figure). After the wastewater flows through the fine filter screen, fine waste residue is filtered out, resulting in cleaner water.

[0045] As a specific embodiment, the coagulation reaction treatment unit includes a coagulation reaction tank, a reagent addition tank and a steel fence assembly. The inlet end of the coagulation reaction tank is connected to the first output pipe installed on the side wall of the filter tank 1 to input the wastewater after primary filtration. The inlet end of the coagulation reaction tank is also connected to the reagent addition tank through a flow meter to quantitatively transport the reagent so as to fully carry out the flocculation reaction. The above-mentioned steel fence assembly can be installed vertically and pluggably in the coagulation reaction tank to divide the coagulation reaction tank into several sub-reaction chambers, which is conducive to the separation of multiple agglomerated flocs after the flocculation reaction. They have an attachment base or an attachment carrier, that is, they are attached to the side wall of the grid. However, it should be noted that the steel grid cannot be as fine as the metal grid commonly used for filtration, otherwise it will definitely have a counter-effect, affecting the coagulation of the flocs, and even because they are too dispersed, the corresponding substances cannot be condensed into one. When setting up the steel grating, the steel grating can also be pulled out. When cleaning the steel grating, the residual flocs attached to its surface can be washed away at the same time, which can also serve the purpose of clearing waste in the wastewater.

[0046] In this embodiment, Figure 9As shown, the sedimentation treatment part includes a sedimentation tank 24, and this sedimentation tank 24 can be connected to the outlet of the coagulation reaction treatment part through a second output pipe. The outlet end of the second output pipe is coaxially located in a vibration-damping pipe 25 with a closed bottom, and is also arranged opposite to a conical slider 28 supported by a conical spring 29 in the vibration-damping pipe 25. Once the wastewater flows into the vibration-damping pipe 25, it will hit the conical slider 28, and under the action of the conical spring 29, the vibration is reduced and energy is released, thereby preventing the water flow from suddenly splashing upward in the opposite direction, causing violent oscillation in the sedimentation tank 24, and affecting the sedimentation effect. In practice, the vibration damping pipe 25 can be fixed in the upper center position inside the sedimentation tank 24. In addition, a diverter plate 26 is coaxially fixed to the top end of the vibration damping pipe 25. This diverter plate 26 is threadedly fitted onto the vibration damping pipe 25 to adjust its installation height. That is, the height of the diverter plate 26 must be slightly lower than the top end of the vibration damping pipe 25, so that the water overflows and flows onto the diverter plate 26, and then flows from the edge of the diverter plate 26 into the sedimentation tank 24, so that the water flow transitions smoothly and further reduces oscillation. In order to make the diverter plate 26 more stable, the diverter plate 26 is also connected to the load ring 50 coaxially fixed to the vibration damping pipe 25 through a cylindrical spring 27 that is always in a compressed state, so as to avoid slight shaking of the diverter plate 26 during the threaded connection. As a more optimal design, to automatically adjust the height of the diverter disc 26, this embodiment also includes a controller, a liquid level gauge 31 installed in the sedimentation tank 24, and a cylindrical gear 30 driven by a micromotor. This cylindrical gear 30 has an extremely thick tooth, meaning an extremely long axial length. Since the diverter disc 26 is a gear disc, this sufficient axial length ensures that the diverter disc 26 and the cylindrical gear 30 are always engaged. During operation, the controller detects the liquid level based on the liquid level gauge 31 and drives the micromotor to rotate. This ensures that the installation height of the bottom end of the diverter disc 26 is always consistent with the liquid level in the sedimentation tank 24, minimizing the impact of vibration caused by wastewater flowing into the sedimentation tank 24.

[0047] In this embodiment, Figure 10 As shown, in addition to using anaerobic tanks and other decomposition treatment methods, this microbial decomposition treatment unit also requires aerobic microorganisms for decomposition to fully treat various organic matter. Specifically, when using aerobic microbial decomposition, it must include a microbial decomposition tank 32, a rotating column 33, a plate rack 34, and a biofilm. The plate rack 34 is a rectangular frame structure, and the biofilm is installed on both sides of the plate rack 34 so that when immersed in wastewater, it can decompose and treat organic matter in the wastewater. Specifically, these plate racks 34 are fixed in a circular array on the rotating column 33, and the rotating column 33 is intermittently rotated and installed in the microbial decomposition tank 32. Moreover, when the rotating column 33 rotates, each plate rack 34 can be exposed to the pool mouth of the microbial decomposition tank 32 in sequence and completely, performing a round of oxygen replenishment and sufficient contact to enhance the microbial treatment effect.

[0048] Finally, as an example of a specific implementation method, a construction wastewater treatment method is specifically described. This method primarily utilizes the aforementioned construction wastewater treatment device. Construction wastewater is first transported to the primary filtration treatment unit. During the transport process, when the amount of construction waste accumulated on the spring plate 11 reaches a level requiring removal, the spring plate 11 is lifted upward. As it leaps above the upper ends of the two baffles 10, the spring plate 11 opens to both sides due to its elastic reset action, flinging the construction waste on its surface to both sides, thereby discharging the waste. Furthermore, in practice, residual construction waste on the spring plate 11 can be manually removed at appropriate times to thoroughly clean the spring plate 11. When the construction waste accumulated on the comb structure 601 reaches a certain amount, it automatically slides downward and enters the filter chamber 2 below the timely opened water flow plate 5. This means that the waste slides into the filter chamber 2 through the aforementioned feed port 201. When the construction waste in the filter chamber 2 is full, it is removed and poured out. The wastewater flowing out of the primary filtration treatment unit then enters the coagulation reaction treatment unit, where a flocculant is added to form a number of clumping flocs. The wastewater containing the flocs is then discharged into the sedimentation tank 24, where the flocs gradually sink and form sediment, facilitating separation. Finally, the upper layer of liquid in the sedimentation tank 24 is discharged into the microbial decomposition treatment unit. After microbial decomposition, it is discharged into the fine filtration treatment unit for final filtration and purification, resulting in clean water.

[0049] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. A construction wastewater treatment device, characterized in that: It includes a primary filtration treatment section, a coagulation reaction treatment section, a sedimentation treatment section, a microbial decomposition treatment section and a fine filtration treatment section connected in sequence. The primary filtration treatment section and the fine filtration treatment section both include a filtration pool (1), a filtration chamber (2) is installed in the filtration pool (1), a top end of the filtration chamber (2) is provided with a feed inlet (201), vertical plates (4) are provided on both sides of the feed inlet (201), a damping hinged connection is provided on one side of the top end of the vertical plate (4) with a horizontally arranged water-passing plate (5), one side of the two water-passing plates (5) respectively contacts the bottom end of two inclined walls (801) of a flow divider (8), and the flow divider (8) is located at the center of the upper end of the feed inlet (201); An upper telescopic plate (7) and a lower telescopic plate (6) are also provided on one side of each inclined wall (801), both of which are mounted on the rotating part. The end of the lower telescopic plate (6) is a comb tooth structure (601), and the end of the comb tooth structure (601) is in contact with the inclined wall (801). Vertical baffles (10) are respectively provided on both sides of the top of the diverter (8). The bottom end of each baffle (10) is connected to a gear rod (9) in contact with the inclined wall (801). Between the two rows of gear rods (9) on the left and right sides, a hollow spring plate (11) in an inverted V shape is provided on the top surface of the diverter (8). When the amount of filtered matter accumulated on the comb-tooth structure (601) is large enough to push the lower telescopic plate (6) to rotate downward, a main electromagnet (12) located below the rotating portion is energized to attract the lower telescopic plate (6), causing the lower telescopic plate (6) to rotate to a position where it can push open the water-passing plate (5) below it, and at this time, the upper telescopic plate (7) rotates to the position where the lower telescopic plate (6) was originally located; a fine filter is connected to the inner surface of the spring plate (11) of the fine filtration processing portion and between two adjacent teeth of the comb-tooth structure (601); The rotating portion comprises a fixedly mounted core column (13) and a rotating sleeve (35) mounted on the core column (13) in a damped rotation manner. The rotating sleeve (35) is respectively fixedly mounted with the upper telescopic plate (7) and the lower telescopic plate (6) along its radial direction. A first conductor (15) is embedded in one end of the lower telescopic plate (6) located inside the rotating sleeve (35). When the end side of the lower telescopic plate (6) contacts the limiting protrusion (51) on the side wall of the core column (13), the first conductor (15) contacts the second conductor (16) on the core column (13). At this time, the main electromagnet (12) is de-energized. When the two conductors are separated, the main electromagnet (12) is energized to attract the lower telescopic plate (6). A secondary electromagnet (17) is provided in the lower telescopic plate (6), the lower telescopic plate (6) is located at one end of the rotating sleeve (35), and an arc-shaped inner rack (23) and the first conductor (15) are arranged side by side along the axial direction of the core column (13). An inner insert plate (602) for extrusion contact with the inclined wall (801) is elastically and telescopically inserted in the lower telescopic plate (6); A fan-shaped gear (22) is rotatably mounted in the mounting cavity (1301) on the side of the core column (13), one side of the fan-shaped gear (22) is exposed to the side of the core column (13), an insulating partition block (19) is fixed in the mounting cavity, and arc springs (18) connected to the two side surfaces of the fan-shaped gear (22) are respectively provided on both sides of the partition block (19), and a third conductor (20) is provided inside one end of the arc spring (18) on the side of the upper telescopic plate (7), and the other end of the arc spring (18) is provided with a third conductor (20). An arc-shaped guide rod (21) is provided inside one end, the third conductor (20) is fixed on the partition block (19), and the arc-shaped guide rod (21) is fixed on the side of the sector gear (22), so that when the main electromagnet (12) is powered off, the rotating sleeve (35) is reversed, and when the inner rack (23) is engaged with the sector gear (22), the arc-shaped guide rod (21) is inserted into the third conductor (20) and maintains contact, and at this time, the auxiliary electromagnet (17) is powered on to attract the inner insert plate (602).

2. The construction wastewater treatment device according to claim 1, characterized in that: The coagulation reaction treatment part includes a coagulation reaction tank, a reagent adding tank and a steel fence assembly. The inlet end of the coagulation reaction tank is connected to the first output pipe installed on the side wall of the filter tank (1); the inlet end of the coagulation reaction tank is also connected to the reagent adding tank through a flow meter. The steel fence assembly can be installed vertically in the coagulation reaction tank to separate the coagulation reaction tank into a plurality of sub-reaction chambers.

3. The construction wastewater treatment device according to claim 1, characterized in that: The sedimentation treatment section includes a sedimentation tank (24), and the sedimentation tank (24) is connected to the outlet of the coagulation reaction treatment section through a second output pipe. The outlet end of the second output pipe is coaxially located in a vibration-damping pipe (25) with a closed bottom, and is spaced opposite to a conical slider (28) supported by a conical spring (29) in the vibration-damping pipe (25). The vibration-damping pipe (25) is fixed in the upper central position inside the sedimentation tank (24), and a diverter plate (26) is coaxially fixed to the top end of the vibration-damping pipe (25). The diverter plate (26) is threadedly fitted on the vibration-damping pipe (25), and the height of the diverter plate (26) must be lower than the top end of the vibration-damping pipe (25). The diverter plate (26) is also connected to a supporting ring (50) coaxially fixed on the vibration-damping pipe (25) through a cylindrical spring (27) that is always in a compressed state.

4. The construction wastewater treatment device according to claim 3, characterized in that: The invention also includes a controller, a liquid level meter (31) installed in the sedimentation tank (24), and a cylindrical gear (30) driven by a micro motor. The diverter disc (26) is a gear disc structure. The diverter disc (26) and the cylindrical gear (30) are always engaged. The controller detects the liquid level according to the liquid level meter (31) and drives the micro motor to rotate so that the installation height of the bottom end surface of the diverter disc (26) is consistent with the liquid level in the sedimentation tank (24).

5. The construction wastewater treatment device according to claim 1, characterized in that: The microbial decomposition treatment section includes a microbial decomposition pool (32), a rotating column (33), a plate rack (34) and a biofilm. The plate rack (34) is a rectangular frame structure. The biofilm is covered and installed on both side surfaces of the plate rack (34). The plate rack (34) is fixed on the rotating column (33) in a circular array. The rotating column (33) is intermittently rotated and installed in the microbial decomposition pool (32). When the rotating column (33) rotates, each plate rack (34) can sequentially and completely expose the pool mouth of the microbial decomposition pool (32).

6. The construction wastewater treatment device according to claim 1, characterized in that: A hinge shaft (501) is fixed to one side of the water-passing plate (5), the end of the hinge shaft (501) extends out of the side wall of the filter tank (1), and a threaded blind hole (50101) is provided at the end thereof; The invention also includes a first gear (36) fixedly mounted on the rotating sleeve (35), and a second gear (38) mounted on the end of the hinge shaft (501), wherein the second gear (38) is coaxially fixed with a locking stud (40) for cooperating with the threaded blind hole (50101), and the locking stud (40) is threadedly mounted in a fixed threaded mounting sleeve (39), and the first gear (36) and the second gear (38) are meshed through a linear rack (37), so that when the rotating sleeve (35) rotates as the lower telescopic plate (6) abuts against the main electromagnet (12), the locking stud (40) is completely screwed out of the threaded blind hole (50101).

7. The construction wastewater treatment device according to claim 1, characterized in that: The inner axis of the spring plate (11) is provided with an arc-shaped groove (1101), and a lifting rod (43) with a lifting ring (44) is fixed at the center of the outer top of the spring plate (11); the tops of the two baffles (10) are connected to a horn cover (41), and a conical drainage cover (42) is fixed to the edge of the large port on the top of the horn cover (41), and the edge of the conical drainage cover (42) is inclined downward.

8. A method for treating construction wastewater, characterized in that: The construction wastewater treatment device according to any one of claims 1 to 7 is used for treatment, comprising the following steps: T1. The construction wastewater is transported to the primary filtration treatment part. During the transport process, when the amount of construction waste accumulated on the spring plate (11) reaches a level that requires cleaning, the spring plate (11) is lifted upward. When the spring plate (11) jumps out of the upper ends of the two baffles (10), it opens to both sides due to the elastic reset effect, and the construction waste on its surface is thrown out to both sides. The construction waste remaining on the spring plate (11) is manually removed in a timely manner. When the construction waste accumulated on the comb structure (601) reaches a corresponding amount, it automatically slides downward and enters the filter chamber (2) below the opened water flow plate (5). When the construction waste in the filter chamber (2) is full, it is taken out and poured out. T2. The wastewater flowing out of the primary filtration treatment section enters the coagulation reaction treatment section, where a flocculant is added to form agglomerated flocs in the wastewater, which are then discharged into a sedimentation tank (24) to allow the flocs to gradually sink and form sediment; T3. The upper layer of liquid in the sedimentation tank (24) is discharged into the microbial decomposition treatment section, and after being decomposed by microorganisms, it is discharged into the fine filtration treatment section for final filtration and purification.

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