Modularized sewage treatment device

Abstract

The utility model relates to the technical field of sewage treatment devices, and discloses a modular sewage treatment device which comprises a supporting bottom plate, a pretreatment mechanism is arranged on the supporting bottom plate, a biochemical treatment mechanism is arranged on the side edge of the pretreatment mechanism, and a composite ecological filtering mechanism is arranged on the side edge of the biochemical treatment mechanism. The pretreatment mechanism, the biochemical treatment mechanism and the composite ecological filtering mechanism are arranged on the supporting bottom plate, and an artificial grid in the pretreatment mechanism can filter out large-particle impurities in wastewater for the first time; the primarily filtered wastewater can be subjected to various biochemical treatments by entering an anaerobic tank, an anoxic tank, an aerobic tank, a sedimentation tank and an intermediate water tank in the biochemical treatment mechanism, so that the problems that the mass transfer efficiency between the traditional wastewater and filter material particles is low, and the COD (Chemical Oxygen Demand) is increased as an external carbon source is needed for denitrification can be solved; furthermore, organic matters, nitrogen, phosphorus and suspended matters contained in the wastewater can be effectively removed, so that the emission requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment devices, in particular to a modular sewage treatment device. Background Art

[0002] Wastewater treatment is the process of purifying wastewater so that it meets the water quality requirements for discharge into a water body or reuse. Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering, and is increasingly entering the daily lives of ordinary people.

[0003] After searching, the authorized Chinese patent announcement number CN 212246367 U discloses a modular sewage treatment device, including a bottom plate, a cross bar fixedly installed on the top of the bottom plate through a bracket, a moving block slidably sleeved on the cross bar, a motor box welded on the bracket, a three-phase motor spirally fixed on the inner side of the motor box, and the three-phase motor is connected to a threaded rod through a coupling transmission, and the threaded rod penetrates the moving block, and the top of the threaded rod is rotatably connected to the cross bar through a rotating shaft seat, a cleaning tank is fixedly installed on the top of the bottom plate and located directly below the cross bar, two circular grooves are symmetrically opened on both sides of the bottom of the cleaning tank, and two V-shaped plates are symmetrically rotatably connected on both sides of the inner side of the cleaning tank, and the outer sides of the V-shaped plates are respectively spirally connected with two connecting rods through connecting nut seats, and one end of the two connecting rods is embedded in the circular groove. The utility model sets a spiral blade and two V-shaped plates, so that the solid waste floating on the upper part of the liquid forms a circulation along the container, ensuring that the solid waste and water are fully in contact with oxygen and a thorough oxidation reaction.

[0004] The sewage treatment device in the above patent still has certain shortcomings. When actually used, the existing sewage treatment device often only filters by setting up multiple sets of filter nets, but it is difficult to effectively remove the organic matter, nitrogen, phosphorus and suspended matter contained in the sewage, so that the treated sewage still contains more pollutants and does not meet the environmental emission standards. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a modular sewage treatment device, which solves the problem that the existing sewage treatment devices, when actually used, often only filter by setting up multiple groups of filter nets, but it is difficult to effectively remove organic matter, nitrogen, phosphorus and suspended matter contained in the sewage, so that the treated sewage still contains more pollutants and does not meet the environmental emission standards.

[0006] The utility model provides the following technical solutions: a modular sewage treatment device, comprising a supporting bottom plate, a pretreatment mechanism is arranged on the supporting bottom plate, a biochemical treatment mechanism is arranged on the side of the pretreatment mechanism, and a composite ecological filtration mechanism is arranged on the side of the biochemical treatment mechanism;

[0007] The pre-treatment mechanism includes a liquid inlet chamber arranged on the top of the support base plate. An artificial grille is arranged in the liquid inlet chamber. One side of the liquid inlet chamber is communicated with an external connecting pipe, and the other side of the liquid inlet chamber is communicated with a first connecting pipe. The bottom end of the liquid inlet chamber is fixedly connected to the support base plate through two symmetrically arranged support plates;

[0008] The biochemical treatment mechanism includes an anaerobic tank arranged on the side of the liquid inlet chamber. The end of the first connecting pipe extends into the anaerobic tank. A first inspection cover plate is arranged on the top of the anaerobic tank. A first treatment tank is arranged on the side of the anaerobic tank. A middle baffle is arranged in the middle of the first treatment tank. The middle baffle divides the first treatment tank into an anoxic tank and an aerobic tank. A first lift pump is arranged at the bottom of the anaerobic tank. The output end of the first lift pump is connected to a first liquid delivery pipe. The end of the first liquid delivery pipe penetrates through the anaerobic tank and extends to the top of the first treatment tank. A second inspection cover plate is arranged at the top of the first treatment tank. Two blowers are symmetrically arranged on the second inspection cover plate. The output end of the blower is connected to a ventilation pipe. The bottom end of the ventilation pipe penetrates through the second inspection cover plate and extends to the bottom of the first treatment tank. A second treatment tank is arranged on the side of the first treatment tank. A third inspection cover plate is arranged at the top of the second treatment tank. A partition baffle is arranged in the second treatment tank. The partition baffle divides the internal space of the second treatment tank into a sedimentation tank and an intermediate water tank. A second lift pump is arranged in the intermediate water tank. The output end of the second lift pump is connected to a second liquid delivery pipe. The first treatment tank and the second treatment tank are connected and communicated through a water pipe arranged therebetween.

[0009] Preferred technical solution one: The composite ecological filtration mechanism includes an ecological filtration tank arranged on the side of the second treatment tank. The end of the second liquid delivery pipe extends into the ecological filtration tank. An anti-seepage layer is arranged at the bottom of the ecological filtration tank.

[0010] Preferred technical solution two: A combined packing layer is arranged above the anti-seepage layer. A plant planting plate is arranged above the combined packing layer. A number of aquatic plants are evenly arranged on the plant planting plate. A drain pipe is communicated with the side of the ecological filtration tank. A valve is arranged on the drain pipe.

[0011] Preferred technical solution three: The artificial grille is inclined and arranged in the liquid inlet chamber.

[0012] This solution can enable the artificial grille to better intercept large particle impurities and garbage contained in the wastewater.

[0013] Preferred technical solution four: A number of ventilation holes are evenly opened on both sides of the bottom end of the ventilation pipe.

[0014] This solution can make the ventilation pipe generate more bubbles during oxygenation in the aerobic tank.

[0015] Preferred technical solution five: The combined packing layer is composed of sulfur-containing compound nano-minerals and alkalinity supplement substances.

[0016] This solution can enable the combined packing layer to improve the microbial-mineral contact interface and the electron transfer efficiency during the redox process through sulfur-containing compound nano-minerals and alkalinity supplement substances, with advantages such as a faster reaction rate and a strong pollutant removal effect, and can solve the problems of low mass transfer efficiency between traditional wastewater and filter media particles, packing loss, and the need for an external carbon source for denitrification resulting in an increase in COD.

[0017] Compared with the prior art, the present utility model provides a modular sewage treatment device, which has the following beneficial effects:

[0018] (1) In the present utility model, a pretreatment mechanism, a biochemical treatment mechanism, and a composite ecological filtration mechanism are provided on the support bottom plate. Among them, the manual grille in the pretreatment mechanism can initially filter out large particle impurities in the wastewater, and the pre-filtered wastewater can then enter the anaerobic tank, anoxic tank, aerobic tank, sedimentation tank, and intermediate water tank in the biochemical treatment mechanism for various biochemical treatments, thereby removing the organic matter and harmful elements contained in the wastewater. Finally, it enters the ecological filtration tank. Through the sulfur-containing compound nano-minerals and alkalinity supplement substances filled in the combined packing layer, it can improve the microbial-mineral contact interface and the electron transfer efficiency during the redox process through sulfur-containing compound nano-minerals and alkalinity supplement substances, with advantages such as a faster reaction rate and a strong pollutant removal effect, and can solve the problems of low mass transfer efficiency between traditional wastewater and filter media particles, packing loss, and the need for an external carbon source for denitrification resulting in an increase in COD. Furthermore, it can effectively remove the organic matter, nitrogen, phosphorus, and suspended solids contained in the wastewater, thereby meeting the discharge requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0020] Figure 2 is a front view sectional structural schematic diagram of the present utility model;

[0021] Figure 3 is of the present utility model Figure 2 is an enlarged structural diagram of the pretreatment mechanism in

[0022] Figure 4 is of the present utility model Figure 2 is an enlarged structural diagram of the composite ecological filtration mechanism in.

[0023] In the figure: 1. Support bottom plate; 2. Pretreatment mechanism; 3. Biochemical treatment mechanism; 4. Composite ecological filtration mechanism;

[0024] 201. Liquid inlet chamber; 202. Manual grille; 203. External connecting pipe; 204. First connecting pipe; 205. Support plate;

[0025] 301. Anaerobic tank; 302. First inspection cover plate; 303. First treatment tank; 304. Middle baffle; 305. Anoxic tank; 306. Aerobic tank; 307. First lift pump; 308. First liquid delivery pipe; 309. Second inspection cover plate; 310. Fan; 311. Ventilation pipe; 312. Second treatment tank; 313. Third inspection cover plate; 314. Partition baffle; 315. Sedimentation tank; 316. Intermediate water tank; 317. Second lift pump; 318. Second liquid delivery pipe; 319. Water connection pipe;

[0026] 401. Ecological filtration tank; 402. Impermeable layer; 403. Composite packing layer; 404. Plant planting plate; 405. Aquatic plants; 406. Drain pipe; 407. Valve. Specific implementation mode

[0027] Please refer to Figures 1-4 ,

[0028] Embodiment 1: A modular sewage treatment device includes a support bottom plate 1, a pretreatment mechanism 2 is arranged on the support bottom plate 1, a biochemical treatment mechanism 3 is arranged on the side of the pretreatment mechanism 2, and a composite ecological filtration mechanism 4 is arranged on the side of the biochemical treatment mechanism 3;

[0029] The pretreatment mechanism 2 includes a liquid inlet chamber 201 arranged on the top of the support bottom plate 1, a manual grille 202 is arranged in the liquid inlet chamber 201, an external connecting pipe 203 is communicated on one side of the liquid inlet chamber 201, a first connecting pipe 204 is communicated on the other side of the liquid inlet chamber 201, and the bottom end of the liquid inlet chamber 201 is fixedly connected to the support bottom plate 1 through two symmetrically arranged support plates 205.

[0030] The biochemical treatment mechanism 3 includes an anaerobic tank 301 arranged on the side of the liquid inlet chamber 201, the end of the first connecting pipe 204 extends into the anaerobic tank 301, a first inspection cover plate 302 is arranged on the top of the anaerobic tank 301, a first treatment tank 303 is arranged on the side of the anaerobic tank 301, a middle baffle 304 is arranged in the middle of the first treatment tank 303, the middle baffle 304 divides the first treatment tank 303 into an anoxic tank 305 and an aerobic tank 306, and a first lift pump 307 is arranged at the bottom of the anaerobic tank 301.

[0031] The output end of the first lift pump 307 is connected to a first infusion pipe 308. The end of the first infusion pipe 308 penetrates through the anaerobic tank 301 and extends to the top of the first treatment tank 303. A second inspection cover plate 309 is provided at the top of the first treatment tank 303. Two blowers 310 are symmetrically arranged on the second inspection cover plate 309. The output end of the blower 310 is connected to a ventilation pipe 311. The bottom end of the ventilation pipe 311 penetrates through the second inspection cover plate 309 and extends to the bottom of the first treatment tank 303. A second treatment tank 312 is provided on the side of the first treatment tank 303. A third inspection cover plate 313 is provided at the top of the second treatment tank 312.

[0032] A partition baffle 314 is arranged in the second treatment tank 312. The partition baffle 314 divides the internal space of the second treatment tank 312 into a sedimentation tank 315 and an intermediate water tank 316. A second lift pump 317 is arranged in the intermediate water tank 316. The output end of the second lift pump 317 is connected to a second infusion pipe 318. The first treatment tank 303 and the second treatment tank 312 are connected and communicated through a water pipe 319 provided.

[0033] The composite ecological filtration mechanism 4 includes an ecological filtration tank 401 arranged on the side of the second treatment tank 312. The end of the second infusion pipe 318 extends into the ecological filtration tank 401. An anti-seepage layer 402 is arranged at the bottom of the ecological filtration tank 401. A combined packing layer 403 is arranged above the anti-seepage layer 402. A plant planting plate 404 is arranged above the combined packing layer 403. A number of aquatic plants 405 are evenly arranged on the plant planting plate 404. A drain pipe 406 is communicated with the side of the ecological filtration tank 401. A valve 407 is arranged on the drain pipe 406.

[0034] Example 2: The difference between this example and Example 1 is that, among them, the manual grille 202 is inclined and arranged in the liquid inlet chamber 201.

[0035] So that the manual grille 202 can better intercept large particle impurities and garbage contained in the wastewater.

[0036] Example 3: The difference between this example and Example 1 is that, among them, a number of ventilation holes are evenly opened on both sides of the bottom end of the ventilation pipe 311.

[0037] So that the ventilation pipe 311 can generate more bubbles for oxygenation in the aerobic tank 306.

[0038] Example 4: The difference between this example and Example 1 is that, among them, the combined packing layer 403 is composed of sulfur-containing compound nano-minerals and alkalinity supplement substances.

[0039] The combined filler layer 403 can improve the electron transfer efficiency at the microorganism-mineral contact interface and in the oxidation-reduction process through sulfur-containing nano-minerals and alkalinity supplements, and has the advantages of faster reaction rate and stronger pollutant removal effect. It can solve the problems of low mass transfer efficiency between traditional wastewater and filter particles, filler loss, and increased COD due to the need for an external carbon source for denitrification.

[0040] In this embodiment, since the existing sewage treatment equipment is often only filtered by setting up multiple groups of filter nets during actual use, it is difficult to effectively remove the organic matter, nitrogen, phosphorus and suspended matter contained in the sewage, so that the treated sewage still contains more pollutants and does not meet the environmental emission standards.

[0041] In summary, in the specific implementation, the user first needs to use the external connecting pipe 203 to introduce the wastewater into the liquid inlet tank 201, and the large particles of impurities and garbage contained in the wastewater are initially filtered out through the artificial screen 202 in the liquid inlet tank 201. The wastewater after the initial filtration enters the anaerobic tank 301 through the first connecting pipe 204. In the anaerobic tank 301, the user can add liquid alkali and nutrient salts to balance the water volume and quality of the wastewater.

[0042] The treated wastewater is introduced into the first treatment box 303 through the first lifting pump 307 and the first liquid infusion pipe 308. By starting the fan 310, the fan 310 can continuously introduce oxygen into the wastewater through the ventilation pipe 311, and COD is removed through aeration and microbial metabolism. Uninterrupted aeration in the aerobic tank 306 can increase the dissolved oxygen concentration in the wastewater, providing a sufficient aerobic environment for the nitrification of microorganisms. NH3-N is partially purified in this area. The anaerobic phosphorus release and aerobic (or anoxic) phosphorus absorption characteristics of polyphosphate microorganisms are utilized to greatly reduce the phosphorus concentration of the mixed liquid in the aerobic or anoxic section.

[0043] The wastewater after biochemical treatment enters the sedimentation tank 315 in the second treatment box 312 through the water pipe 319 for mud and water sedimentation separation. The precipitated sludge can be discharged through the external suction pipe of the user.

[0044] Finally, the wastewater settled in the sedimentation tank 315 enters the intermediate water tank 316, and is pumped into the ecological filtration tank 401 through the second lift pump 317 and the second infusion pipe 318. The trace elements in the wastewater are further absorbed and purified by the microorganisms contained in the wastewater and the aquatic plants 405 planted on the plant planting plate 404. The sulfur-containing compound nano-minerals and alkalinity supplement substances filled in the combined packing layer 403 can improve the electron transfer efficiency in the microbial-mineral contact interface and the redox process through the sulfur-containing compound nano-minerals and alkalinity supplement substances, with advantages such as faster reaction rate and stronger pollutant removal effect. It can solve the problems of low mass transfer efficiency between traditional wastewater and filter media particles, packing loss, and the need for external carbon source for denitrification resulting in increased COD, and can effectively remove the organic matter, nitrogen, phosphorus, and suspended solids contained in the wastewater, thus meeting the discharge requirements.

Claims

1. A modular sewage treatment device, comprising a supporting base plate (1), characterized in that: A pretreatment mechanism (2) is arranged on the supporting bottom plate (1), a biochemical treatment mechanism (3) is arranged on the side of the pretreatment mechanism (2), and a composite ecological filtering mechanism (4) is arranged on the side of the biochemical treatment mechanism (3); The pretreatment mechanism (2) comprises a liquid inlet bin (201) arranged on the top of the supporting bottom plate (1), an artificial grid (202) is arranged in the liquid inlet bin (201), one side of the liquid inlet bin (201) is connected to an external connecting pipe (203), the other side of the liquid inlet bin (201) is connected to a first connecting pipe (204), and the bottom end of the liquid inlet bin (201) is fixedly connected to the supporting bottom plate (1) via two symmetrically arranged supporting plates (205); The biochemical treatment mechanism (3) comprises an anaerobic tank (301) arranged on the side of the liquid inlet bin (201), the end of the first connecting pipe (204) extends into the anaerobic tank (301), the top of the anaerobic tank (301) is provided with a first inspection cover (302), the side of the anaerobic tank (301) is provided with a first treatment box (303), the middle of the first treatment box (303) is provided with a middle baffle (304), and the middle baffle (304) blocks the first A treatment box (303) is divided into an anoxic tank (305) and an aerobic tank (306). A first lifting pump (307) is arranged at the bottom of the anaerobic tank (301). The output end of the first lifting pump (307) is connected to a first infusion pipe (308). The end of the first infusion pipe (308) passes through the anaerobic tank (301) and extends to the top of the first treatment box (303). A second inspection cover (309) is arranged at the top of the first treatment box (303). Two fans (310) are symmetrically arranged on the second inspection cover plate (309), and the output end of the fans (310) is connected to a ventilation pipe (311), and the bottom end of the ventilation pipe (311) passes through the second inspection cover plate (309) and extends to the bottom of the first processing box (303). A second processing box (312) is arranged on the side of the first processing box (303), and a third inspection cover plate (313) is arranged on the top of the second processing box (312). 2) is provided with a partition baffle (314), the partition baffle (314) divides the internal space of the second treatment box (312) into a sedimentation tank (315) and an intermediate water tank (316), a second lift pump (317) is provided in the intermediate water tank (316), the output end of the second lift pump (317) is connected to a second liquid infusion pipe (318), and the first treatment box (303) and the second treatment box (312) are connected via a water pipe (319).

2. A modular sewage treatment device according to claim 1, characterized in that: The composite ecological filtering mechanism (4) comprises an ecological filtering pool (401) arranged on the side of the second processing box (312), the end of the second infusion pipe (318) extends into the ecological filtering pool (401), and an anti-seepage layer (402) is arranged at the bottom of the ecological filtering pool (401).

3. A modular sewage treatment device according to claim 2, characterized in that: A composite filler layer (403) is arranged above the anti-seepage layer (402), a plant planting board (404) is arranged above the composite filler layer (403), a plurality of aquatic plants (405) are evenly arranged on the plant planting board (404), and a drainage pipe (406) is connected to the side of the ecological filtration pool (401), and a valve (407) is arranged on the drainage pipe (406).

4. A modular sewage treatment device according to claim 3, characterized in that: The artificial grid (202) is arranged obliquely in the liquid inlet bin (201).

5. A modular sewage treatment device according to claim 4, characterized in that: A plurality of ventilation holes are evenly arranged on both sides of the bottom end of the ventilation pipe (311).

6. A modular sewage treatment device according to claim 5, characterized in that: The combined filler layer (403) is composed of sulfur-containing compound nano-minerals and alkalinity supplementing substances.

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