CN110054367A - A kind of sewage disposal device - Google Patents

Abstract

The invention provides a sewage treatment equipment, comprising: a pretreatment tank, the upper end of the pretreatment tank is provided with a water inlet, and a solid-liquid separation mechanism is fixedly arranged below the water inlet; an anoxic tank, the anoxic tank is It is arranged on one side of the pretreatment tank, and the anoxic tank is communicated with the pretreatment tank through the first water delivery mechanism; the aeration tank includes an aeration mechanism, and the aeration mechanism uses In order to increase the oxygen content of the sewage in the aeration tank; the aerobic tank, the aerobic tank is communicated with the aeration tank through the second channel; the filter tank, the filter tank is connected to the aeration tank through the third overflow port The aerobic pool is connected. This kind of sewage treatment device separates the aeration tank and the aerobic tank and connects them through the channel below, so that the aeration tank can be fully aerated, so that the aerobic tank has sufficient oxygen, and the sewage treatment efficiency of the device is improved.

Description

a sewage treatment equipment

technical field

The invention relates to the field of sewage treatment, in particular to a sewage treatment device.

Background technique

With the rapid development of economy, the problem of environmental pollution has become more and more serious. One of the reasons for this problem is the random discharge of sewage. In the prior art, many devices for sewage treatment have been invented, and sewage treatment using aerobic ponds is also an important step in these sewage treatment devices. However, these sewage treatment devices have the problem of insufficient sewage conversion rate in the process of pretreatment of sewage, and the oxygen content of the aerobic tank often cannot achieve satisfactory results in the treatment process of the aerobic tank. Therefore, it is necessary to invent a sewage treatment equipment to solve the above problems.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is: in order to solve the problem of insufficient oxygen in the aerobic tank during the treatment process, the present invention provides a sewage treatment equipment to solve the above problem.

The technical scheme adopted by the present invention to solve the technical problem is as follows: a sewage treatment equipment includes:

A pretreatment tank, the upper end of the pretreatment tank is provided with a water inlet, and a solid-liquid separation mechanism is fixed below the water inlet, and the solid-liquid separation mechanism is used to separate the macroscopic impurities in the sewage from the sewage. Out, the part of the pretreatment tank located below the solid-liquid separation mechanism has a discharge port, and the part of the pretreatment tank located below the discharge port is concave upward to form a discharge volume, and the discharge port is formed. an opening is formed between the material chamber and one side of the sewage treatment equipment;

anoxic tank, the anoxic tank is arranged on one side of the pretreatment tank, the anoxic tank includes a first anoxic tank and a second anoxic tank separated by a first partition, the first anoxic tank The oxygen tank is communicated with the pretreatment tank through the first water delivery mechanism, the second anoxic tank is located on the side of the first anoxic tank away from the pretreatment tank, and the first separator is provided with The first overflow port, the height of the first anoxic tank is higher than the height of the second anoxic tank, and anaerobic bacteria are cultivated in the first anoxic tank and the second anoxic tank;

An aeration tank, the aeration tank is located on the side of the second anoxic tank away from the first anoxic tank and is separated from the second anoxic tank by a second partition, the second partition is separated from the second anoxic tank. There is a second overflow port above the plate, the aeration tank includes a third partition plate, a fourth partition plate and an aeration mechanism, and the third partition plate is located in the aeration tank close to the second partition plate. position, a first channel is provided below the third partition, the fourth partition is the side wall of the aeration tank away from the second anoxic tank, and the fourth partition is provided with The second channel, the aeration tank is communicated with the second anoxic tank through the second overflow port and the first channel, and the aeration mechanism is arranged between the third partition plate and the fourth partition plate, The aeration mechanism is used to increase the oxygen content of the sewage in the aeration tank;

an aerobic pool, the aerobic pool is located on the side of the aeration pool close to the fourth partition, the aerobic pool is communicated with the aeration pool through the second channel, and the aerobic pool is cultured with nitrifying bacteria;

A filter tank, the filter tank is located on the side of the aerobic tank away from the second channel, the filter tank is communicated with the aerobic tank through the third overflow port, the filter tank and the anoxic tank are A backflow mechanism is arranged between the pools, the filter pool includes a filter mechanism, and the filter mechanism is used to filter the sewage and store it in the water purification chamber, and a second water delivery mechanism is arranged above the filter pool. The water delivery mechanism is used for drawing out the water in the water purification chamber.

Preferably, the solid-liquid separation mechanism includes a first drive mechanism and a water filter bucket;

The first driving mechanism includes a first motor and a first gear, the first motor is fixedly arranged outside the upper end of the pretreatment tank, and the rotating shaft of the first motor passes through the pretreatment vertically downwards the upper end of the pool, the first gear is coaxially and fixedly connected with the rotating shaft of the first motor;

The water inlet is provided with a water inlet baffle ring, a coarse filter plate is arranged in the water inlet baffle ring, and the inner wall of the upper end of the water filter bucket is rotatably connected with the outer wall of the water inlet baffle ring through a bearing. A first gear ring is fixedly arranged on the outer wall of the upper end of the water filter bucket, and the first gear ring is engaged with the first gear;

A plurality of water leakage holes are arranged on the barrel wall of the water filtering barrel, and a shielding slope is fixedly connected to the outer wall below the plurality of the water leakage holes;

Two triangular shaped gaps are oppositely arranged on the wall surface of the lower end of the water filter bucket, two semicircular shielding plates are arranged below the two gaps, and the two ends of the diameter sides of the two shielding plates are respectively connected with the two shielding plates. The vertices of each of the gaps are hinged, and one end of the two shielding plates away from the respective hinges is fixedly connected with a piece of weight through a wire.

Preferably, the aeration mechanism includes a second motor, a rotating shaft, a plurality of first connecting rods, a first casing, a plurality of jet pipes, a second casing, an air intake impeller, a third casing and a water intake impeller , the second motor is fixedly arranged above the aeration tank, the rotation shaft of the second motor is arranged vertically downward, the rotation shaft is arranged vertically below the second motor, and the rotation shaft The upper end of the motor is coaxially fixed with the rotating shaft of the second motor, and the rotating shaft is fixedly connected with several first connecting rods, air intake impellers and water intake impellers from top to bottom;

A plurality of the first connecting rods are fixedly connected to the rotating shaft in a radial shape, the first housing is fixedly arranged below the plurality of the first connecting rods, and the jet tubes are fixedly arranged radially on the rotating shaft. On the first casing, the jet pipe includes a horizontal pipe and an inclined pipe that are integrally connected, the horizontal pipe passes through the first casing and protrudes into the first casing, the horizontal pipe and the inclined pipe The connection point of the inclined pipe is fixedly connected with the first casing, and the end of the inclined pipe away from the first casing is inclined from the connection between the horizontal pipe and the inclined pipe to the side away from the first casing. Extending from above, the free ends of the horizontal pipe and the inclined pipe both form openings;

The second casing is located below the first connecting rod, the outer wall of the second casing is fixedly connected with a plurality of the first connecting rods, and the air inlet impeller is located in the container of the second casing. cavity;

The third shell is located below the first shell, the inner wall of the third shell is rotatably connected with the outer wall of the first shell through a bearing, and the water inlet impeller is located in the third shell inside the cavity;

A circle of floating parts is fixed on the outer wall of the first shell, and a plurality of connecting chains fixedly connected with the first shell are arranged below the floating part, and the first shell is connected to the first shell through the connecting chains. The third spacer is connected to the fourth spacer.

Preferably, the filter mechanism includes a filter membrane group and a filter barrel;

The filter membrane group is vertically arranged on the side of the filter barrel close to the third overflow port, and the filter membrane group includes several vertically arranged filter membranes;

The filter barrel includes an outer barrel layer, a first filter layer, a second filter layer and an inner barrel layer vertically arranged from the outside to the inside, the outer barrel layer and the inner barrel layer are provided with a number of through holes, and the inner barrel layer is The inner side is the water purification chamber, the first filter layer is an activated carbon layer, the second filter layer is a sponge layer, and the ratio of the thickness of the first filter layer and the second filter layer is 2:1.

Preferably, the first water conveying mechanism includes a first suction pump, a first connecting pipe and a second connecting pipe, the pretreatment tank is communicated with the suction port of the first suction pump through the first connecting pipe, and the The first anoxic tank is communicated with the water outlet of the first suction pump through the second connecting pipe;

The second water delivery mechanism includes a second water pump, a third connection pipe and a fourth connection pipe, the water purification chamber is communicated with the water suction port of the second water pump through the third connection pipe, and the fourth The connecting pipe is fixedly connected with the water outlet of the second water pump;

The return mechanism includes a sludge return pump, a fifth connecting pipe and a sixth connecting pipe. The filter tank is communicated with the sludge return pump through the fifth connection pipe, and the sludge return pump is communicated with the first anoxic tank through the sixth connection pipe.

Preferably, each of the second channels is provided with a filter plate.

Preferably, suspension balls are placed in the aerobic pool.

The beneficial effect of the present invention is that the sewage treatment device separates the aeration tank and the aerobic tank and communicates them through the channel below, so that the aeration tank can be fully aerated, and the aerobic tank has sufficient oxygen. Improve the sewage treatment efficiency of the device.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

FIG. 1 is a schematic structural diagram of a preferred embodiment of a sewage treatment equipment of the present invention.

FIG. 2 is a partial enlarged view of FIG. 1 .

FIG. 3 is a partial enlarged view of FIG. 1 .

FIG. 4 is a partial enlarged view of FIG. 1 .

FIG. 5 is a schematic structural diagram of another embodiment of a sewage treatment equipment of the present invention.

In the figure 1, pretreatment tank, 101, water inlet, 102, water inlet baffle, 103, coarse filter plate, 104, discharge port, 105, discharge chamber, 2, solid-liquid separation mechanism, 201, first Motor, 202, first gear, 203, water filter bucket, 204, first ring gear, 205, leaking hole, 206, blocking slope, 207, blocking plate, 208, heavy object, 3, anoxic tank, 301, first Anoxic tank, 302, the first overflow port, 303, the first partition, 304, the second anoxic tank, 305, the second overflow port, 306, the second partition, 4, the first water delivery mechanism, 401, the first pump, 402, the first connecting pipe, 403, the second connecting pipe, 5, the aeration tank, 501, the third partition, 502, the first channel, 503, the fourth partition, 504, the first Two passages, 505, filter plate, 6, aeration mechanism, 601, second motor, 602, rotating shaft, 603, first connecting rod, 604, first casing, 605, jet tube, 606, second casing , 607, inlet impeller, 608, third housing, 609, inlet impeller, 6010, floating part, 7, aerobic tank, 701, suspension ball, 702, third overflow port, 8, filter tank, 801 , filter module, 802, filter barrel, 8021, outer barrel layer, 8022, first filter layer, 8023, second filter layer, 8024, inner barrel layer, 9, second water delivery mechanism, 901, second pump, 902, the third connecting pipe, 903, the fourth connecting pipe, 10, the return mechanism, 1001, the sludge return pump, 1002, the fifth connecting pipe, 1003, the sixth connecting pipe.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Axial, Radial, Circumferential, etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first," "second," etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance. In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection. Ground connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations. Also, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

As shown in Figures 1-5, the present invention provides a sewage treatment equipment, including: a pretreatment tank 1, an anoxic tank, an aeration tank 5, an aerobic tank 7 and a filter tank 8.

The upper end of the pretreatment tank 1 is the top plate of the pretreatment tank 1. The top plate of the pretreatment tank 1 is provided with a circular water inlet 101. The inner side of the water inlet 101 is fixedly connected with a water inlet baffle ring 102. The water inlet baffle ring 102 is Ring fasteners made of stainless steel. The vertical height of the water inlet baffle ring 102 is twice the vertical height of the water inlet 101, the upper end of the water inlet baffle ring 102 and the upper end of the water inlet 101 are located at the same height, and the inner ring of the water inlet baffle ring 102 is fixedly connected with a horizontal piece. The circular coarse filter plate 103 is provided, and the coarse filter plate 103 is provided with four circular holes distributed in a square shape. The coarse filter plate 103 is mainly used to filter large wastes in the sewage to prevent them from causing damage to the solid-liquid separation mechanism 2 .

The solid-liquid separation mechanism 2 is disposed below the water inlet 101 , and the solid-liquid separation mechanism 2 includes a first driving mechanism and a water filtering bucket 203 . The first drive mechanism includes a first motor 201 and a first gear 202, the first motor 201 is a forward and reverse rotation motor, the first motor 201 is fixed on the outside of the top plate of the pretreatment tank 1 by screws, and the rotating shaft of the first motor 201 is vertical. Passing downward through the top plate of the pretreatment tank 1 , a first gear 202 is fixed coaxially with the part of the rotating shaft of the first motor 201 located below the top plate of the pretreatment tank 1 .

The water filter bucket 203 includes a first part and a second part that are integrally connected, and the first part of the water filter bucket 203 is located above the second part of the water filter bucket 203 .

The first part of the water filter bucket 203 is a hollow funnel surrounded by walls, and the funnel-shaped design allows sewage to flow into the second part of the water filter bucket 203 along the wall surface. The inner wall of the upper end of the first part of the water filter bucket 203 is fixedly connected to the outer ring of the bearing, and the inner ring of the bearing is fixedly connected to the outer wall of the water inlet retaining ring 102 . A first ring gear 204 is fixedly disposed on the outer wall of the upper end of the first part of the water filter bucket 203 , and the first ring gear 204 is engaged with the first gear 202 .

The second part of the water filter bucket 203 is a hollow cylinder surrounded by a wall surface, and the wall surface of the second part of the water filter bucket 203 is provided with a number of water leakage holes 205, and the shape of the water leakage holes 205 is circular. When the water filter bucket 203 rotates, the sewage located in the second part of the water filter bucket 203 enters the pretreatment tank 1 from the water leakage hole 205 under the action of centrifugal force. A circle of shielding slopes 206 is fixedly connected to the outer wall below the plurality of water leakage holes 205 .

Two triangular notches are oppositely provided on the wall surface of the lower end of the water filter bucket 203 , and the distance between the two bottom corner vertices of the two notches is the same as the diameter of the second part of the water filter bucket 203 . Two semicircular shielding plates 207 are arranged below the two notches, and two ends of the diameter sides of the two shielding plates 207 are hinged to the vertices of the two notches, respectively. One end of the two shielding plates 207 away from the respective hinges is fixedly connected with a weight 208 through waterproof nylon, and the weight 208 is a steel ball wrapped with rubber on the outer layer. When the water filter bucket 203 rotates, the two weights 208 will rotate under the action of centrifugal force. The two heavy objects 208 will rise to a certain height during the rotation, and the two shielding plates 207 connected with the two heavy objects 208 will block the two gaps with the rising of the heavy objects 208, so as to prevent sewage from falling from the gaps and improve Conversion efficiency of wastewater during solid-liquid separation.

When the solid-liquid separation mechanism 2 rotates, the sewage filtered by the coarse filter plate 103 will enter the second part of the water filtering barrel 203 along the first part of the water filtering barrel 203 . After the sewage enters the second part of the water filter bucket 203 , it will leak out from the water leakage hole 205 under the action of centrifugal force, and impurities in the sewage with a volume larger than the water leakage hole 205 will not leak from the water leakage hole 205 . The two shielding plates 207 can prevent the sewage from leaking out of the gap and improve the sewage conversion rate. The first motor 201 is a forward and reverse rotation motor. When the first motor 201 is in the time when the forward and reverse rotations are staggered, the two heavy objects 208 will sag again due to the action of gravity, and the two shielding plates 207 will no longer block the two gaps. Impurities that cannot pass through the water leakage holes 205 will also leave the second part of the water filter bucket 203 through the two notches. The upper surface of the shielding slope 206 can allow the leaked sewage to flow into the pretreatment tank 1, and the lower surface of the shielding slope 206 can limit the lifting height of the two heavy objects 208 to prevent them from affecting the solid-liquid separation process.

The part of the pretreatment tank 1 below the discharge port 104 is recessed upward to form a discharge chamber 105, and the discharge chamber 105 forms an opening with one side of the sewage treatment equipment. A discharge port 104 protrudes upward from the part of the discharge chamber 105 located below the solid-liquid separation mechanism 2 , and the discharge port 104 is provided with two upper and lower openings. Enter the discharge chamber 105 . The user can place a container for storing impurities in the discharge chamber 105 for collecting and processing the impurities generated in the solid-liquid separation process.

The anoxic tank 3 is arranged on one side of the pretreatment tank 1, and the anoxic tank 3 includes a first anoxic tank 301 and a second anoxic tank 304 separated by a first partition 303, and the first anoxic tank 301 and the second anoxic tank 304. Anaerobic bacteria are cultivated in the anoxic tank 304 . The first anoxic tank 301 is closer to the pretreatment tank 1 than the second anoxic tank 304 , and the first anoxic tank 301 communicates with the pretreatment tank 1 through the first water conveying mechanism 4 .

The first water conveying mechanism 4 includes a first suction pump 401 , a first connecting pipe 402 and a second connecting pipe 403 . Both the first connecting pipe 402 and the second connecting pipe 403 include two parts, a vertical end arranged vertically and a horizontal end arranged horizontally. The vertical end of the first connecting pipe 402 is inserted into the pretreatment tank 1 , and the horizontal end of the first connecting pipe 402 is connected to the suction port of the first suction pump 401 . The horizontal end of the second connection pipe 403 is connected to the water outlet of the first suction pump 401 , and the vertical end of the first connection pipe 402 is inserted into the first anoxic tank 301 .

The first separator 303 is provided with a first overflow port 302, the height of the first anoxic tank 301 is higher than the height of the second anoxic tank 304, and the sewage will pass through the first overflow after filling the first anoxic tank 301. Orifice 302 enters second anoxic cell 304 . The first anoxic tank 301 and the second anoxic tank 304 can prolong the treatment time of sewage in the anoxic tank 3 . The anaerobic bacteria in the anoxic tank 3 can make the organic matter in the sewage hydrolyze, acidify and methanize, remove the organic matter in the sewage, and pave the way for the subsequent treatment of the sewage in the aerobic tank 7.

The aeration tank 5 is located on the side of the second anoxic tank 304 away from the first anoxic tank 301. The aeration tank 5 is separated from the second anoxic tank 304 by a second partition 306. Above the second partition 306, a The second overflow port 305 . The aeration tank 5 includes a third partition 501, a fourth partition 503 and an aeration mechanism 6. The third partition 501 is located at the position of the aeration tank 5 close to the second partition 306, and a third partition is provided below the third partition 501. A channel 502 . The aeration tank 5 is communicated with the second anoxic tank 304 through the second overflow port 305 and the first channel 502 , and the sewage can enter from the second overflow port 305 and the first channel 502 after filling the second anoxic tank 304 Aeration tank 5.

The fourth partition 503 is the side wall of the aeration tank 5 away from the second anoxic tank 304 , and a second channel 504 is provided below the fourth partition 503 . The aeration mechanism 6 is arranged between the third partition plate 501 and the fourth partition plate 503. The aeration mechanism 6 used to generate oxygen will cause water spray during operation, and the third partition plate 501 can prevent the water spray from entering the second hypoxia. In the tank 304, the anoxic treatment process of the sewage is prevented from being affected.

The aeration mechanism 6 includes a second motor 601 , a rotating shaft 602 , a plurality of first connecting rods 603 , a first casing 604 , a plurality of jet pipes 605 , a second casing 606 , an intake impeller 607 , and a third casing 608 and inlet impeller 609.

The second motor 601 is fixedly arranged on the upper end of the top plate of the aeration tank 5 by screws, and the rotating shaft of the second motor 601 passes vertically downward through the top plate of the aeration tank 5 . The rotating shaft 602 is vertically arranged below the second motor 601, and the upper end of the rotating shaft 602 is coaxially fixed with the rotating shaft of the second motor 601. The rotating shaft 602 is fixedly connected with a number of first connecting rods 603 from top to bottom. Gas impeller 607 and water inlet impeller 609.

The plurality of first connecting rods 603 are all cylindrical steel pipes made of stainless steel, and the plurality of first connecting rods 603 are radially distributed on the rotating shaft 602 . The plurality of first connecting rods 603 are all inclined. The upper end of the first connecting rod 603 is fixedly connected with the rotating shaft 602 , and the lower end of the first connecting rod 603 protrudes obliquely downward from the side away from the rotating shaft 602 .

The first shell 604 is a hollow cylinder with the same upper and lower shapes surrounded by a rectangular stainless steel wall, and the first shell 604 is vertically arranged in the water. The upper edge of the first casing 604 is fixedly connected with the lower end of the first connecting rod 603 .

Several jet tubes 605 are radially distributed on the first housing 604. The jet tubes 605 include a horizontal tube and an inclined tube that are integrally connected. form an opening. The connection between the horizontal tube and the inclined tube is hermetically and fixedly connected with the first housing 604, the horizontal tube is located in the cavity of the first housing 604, and the free end of the inclined tube is away from the first housing from the connection of the horizontal tube and the inclined tube. One side of the body 604 protrudes obliquely upward.

The second shell 606 is a hollow circular cone surrounded by thin walls. The inclination angle of the wall surface of the second shell 606 is consistent with the inclination angle of the first connecting rods 603 . The connecting rod 603 is fixedly connected, and the intake impeller 607 is located in the cavity of the second housing 606 .

The third casing 608 is located below the first casing 604 , and the third casing 608 is a hollow cylinder surrounded by a rectangular wall surface. A bearing is provided on the inner wall of the third housing 608 , the inner wall of the third housing 608 is fixedly connected with the outer ring of the bearing, and the inner ring of the bearing is fixedly connected with the outer ring of the first housing 604 . The water inlet impeller 609 is located in the cavity of the third housing 608 , and the water inlet impeller 609 is coaxially fixed on the lower end of the rotating shaft 602 .

After the second motor 601 is powered on and started, the rotation of the rotation shaft of the second motor 601 drives the rotation shaft 602 coaxially connected to it to rotate. The first connecting rod 603, the intake impeller 607 and the water intake impeller 609 fixedly connected to the rotating shaft 602 rotate, and the first casing 604 and the second casing 606 fixedly connected to the first connecting rod 603 rotate, and the first casing The jet tube 605 to which the body 604 is fixedly connected rotates. The air intake impeller 607 and the second casing 606 increase the air content in the first casing 604, and the jet pipe 605 and the first casing 604 allow the sewage to be fully mixed with the air. The jet pipe 605 also throws the aerated water out of the aeration mechanism 6 to increase the overall oxygen content of the aeration tank 5 . The water inlet impeller 609 continuously transports the sewage into the cavity of the first casing 604 to increase the oxygen content of the entire aeration tank 5 .

A circle of floating parts 6010 is fixed on the outer wall of the first shell 604, and several connecting chains are fixedly connected to the first shell 604 under the floating part 6010. Four partitions 503 are connected. The floating part 6010 can be made of but not limited to foam material. By adjusting the size and position of the floating part 6010, the user can adjust the horizontal end of the jet pipe 605 of the aeration mechanism 6 to a position close to the water surface in the sewage to maximize the aeration effect . The connecting chain is made of plastic, and the connecting chain can limit the position of the aeration mechanism 6 in the aeration tank 5 .

The aerobic tank 7 is located on the side of the aeration tank 5 close to the fourth partition 503. The aerobic tank 7 is communicated with the aeration tank 5 through the second channel 504, and the oxygen-filled sewage in the aeration tank 5 can pass through the second channel 504. Enter the aerobic pool 7. The nitrifying bacteria are cultivated in the aerobic tank 7, and the nitrifying bacteria can oxidize carbon element oxidizing compounds in the organic matter into carbon dioxide and water, oxidize nitrogen elements into nitrite nitrogen and nitrate nitrogen, oxidize phosphorus elements into phosphate radicals, and further. Reduce organic matter in sewage.

The filter tank 8 is located on the side of the aerobic tank 7 away from the second channel 504 , and the filter tank 8 communicates with the aerobic tank 7 through the third overflow port 702 . The height of the baffle plate below the third overflow port 702 is lower than the height of the second baffle plate 306 , and the water in the aeration tank 5 will flow into the filter tank 8 from the third overflow port 702 after being filled. The filter tank 8 includes a filter mechanism, and the filter mechanism includes a filter membrane group 801 and a filter barrel 802 .

The filter membrane group 801 is vertically arranged on the side of the filter barrel 802 close to the third overflow port 702 . The filter membrane group 801 includes several vertically arranged filter membranes, and the filter membranes are MBR membranes. The sewage flowing into the filter tank 8 through the third overflow port 702 contains sludge generated after aerobic treatment. The filter membrane group 801 can block the sludge on the side of the filter membrane group 801 away from the filter barrel 802 .

The filter barrel 802 includes an outer barrel layer 8021 , a first filter layer 8022 , a second filter layer 8023 and an inner barrel layer 8024 vertically arranged from the outside to the inside. The outer barrel layer 8021 and the inner barrel layer 8024 are provided with several through holes, the inner side of the inner barrel layer 8024 is a water purification chamber, the first filter layer 8022 is an activated carbon layer, the second filter layer 8023 is a sponge layer, and the first filter layer 8022 The ratio to the thickness of the second filter layer 8023 is 2:1.

A second water conveying mechanism 9 is disposed above the water purification chamber, and the second water conveying mechanism 9 includes a second pumping pump 901 , a third connecting pipe 902 and a fourth connecting pipe 903 . The third connection pipe 902 and the fourth connection pipe 903 are both L-shaped pipes, and both the third connection pipe 902 and the fourth connection pipe 903 include a horizontal pipe arranged horizontally and a vertical pipe arranged vertically. The lower end of the vertical pipe of the third connecting pipe 902 protrudes into the clean water chamber, the horizontal pipe of the third connecting pipe 902 is fixedly connected to the suction port of the second suction pump 901, and the horizontal pipe of the fourth connecting pipe 903 is connected to the second suction port 901. The water outlet of the suction pump 901 is connected, and the vertical end of the fourth connecting pipe 903 is located on the side of the filter tank 8 away from the aerobic tank 7 .

This sewage treatment device can improve the conversion rate of sewage during solid-liquid separation. The forward and reverse rotation of the first motor 201 can make the water filter bucket 203 rotate clockwise and counterclockwise in turn, so as to prevent the sundries in the sewage from adhering to the water filter bucket 203 . The design of the discharge port 104 and the discharge chamber 105 is convenient for the user to clean the impurities separated from the sewage. The first anoxic tank 301 and the second anoxic tank 304 can provide sufficient anoxic treatment time and anoxic treatment space for sewage. The aeration tank 5 and the aerobic tank 7 are communicated through the second channel 504, which can ensure that there is sufficient oxygen in the sewage in the aerobic tank 7. The filtering mechanism can precisely filter the treated sewage, which is convenient for users to process the sewage in the next stage. When the second water delivery mechanism 9 draws out the water in the water purification chamber, a water pressure difference is generated inside and outside the filter bucket 802, and the external water pressure gives way to the sewage outside the water purification bucket to pass through the first filter layer 8022 and the second filter layer 8022. The filter layer 8023 enters the water purification chamber to realize automatic filtration of sewage.

According to another embodiment, a return mechanism 10 is provided between the filter tank 8 and the anoxic tank 3, and the return mechanism 10 includes a sludge return pump 1001, a fifth connection pipe 1002 and a sixth connection pipe 1003, and the sludge return pump 1001 passes through Screws are fixed on the upper end of the top plate of the filter tank 8 . The fifth connecting pipe 1002 and the sixth connecting pipe 1003 are both L-shaped pipes, and both the fifth connecting pipe 1002 and the sixth connecting pipe 1003 include a vertical pipe arranged vertically and a horizontal pipe arranged horizontally. The lower end of the vertical end of the fifth connecting pipe 1002 extends below the side of the filter membrane group 801 away from the filter barrel 802 , and the horizontal pipe of the fifth connecting pipe 1002 is fixedly connected to the input pipe of the sludge return pump 1001 . The horizontal pipe of the sixth connecting pipe 1003 is fixedly connected with the output pipe of the sludge return pump 1001 , and the vertical pipe of the sixth connecting pipe 1003 is inserted into the first anoxic tank 301 . The return mechanism 10 puts the filtered sludge in the filter tank 8 into the first anoxic tank 301 . The sludge is rich in nitrates and nitrites generated during aerobic treatment, and returning the sludge to the anoxic tank 3 can convert nitrates and nitrites into nitrogen, reducing the nitrogen content in the sewage.

According to another embodiment, suspension balls 701 are placed in the aerobic tank 7 , and a biofilm beneficial to the growth of microorganisms is provided on the surface of the suspension balls 701 .

In this embodiment, the second channel 504 is provided with a filter plate 505 , and the filter plate 505 can prevent the sludge and the suspended balls 701 in the aerobic tank 7 from entering the aeration tank 5 , and provide the normal working belt of the aeration mechanism 6 . to influence.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of such terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Taking the above ideal embodiments according to the present invention as inspiration, and through the above-mentioned contents of the invention, relevant personnel can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the contents in the specification, and the technical scope must be determined according to the scope of the claims.

Claims (7)

1. a sewage treatment plant, is characterized in that, comprises: A pretreatment tank, the upper end of the pretreatment tank is provided with a water inlet, and a solid-liquid separation mechanism is fixed below the water inlet, and the solid-liquid separation mechanism is used to separate the macroscopic impurities in the sewage from the sewage. Out, the part of the pretreatment tank located below the solid-liquid separation mechanism has a discharge port, and the part of the pretreatment tank located below the discharge port is concave upward to form a discharge volume, and the discharge port is formed. an opening is formed between the material chamber and one side of the sewage treatment equipment; anoxic tank, the anoxic tank is arranged on one side of the pretreatment tank, the anoxic tank includes a first anoxic tank and a second anoxic tank separated by a first partition, the first anoxic tank The oxygen tank is communicated with the pretreatment tank through the first water delivery mechanism, the second anoxic tank is located on the side of the first anoxic tank away from the pretreatment tank, and the first separator is provided with The first overflow port, the height of the first anoxic tank is higher than the height of the second anoxic tank, and anaerobic bacteria are cultivated in the first anoxic tank and the second anoxic tank; An aeration tank, the aeration tank is located on the side of the second anoxic tank away from the first anoxic tank and is separated from the second anoxic tank by a second partition, the second partition is separated from the second anoxic tank. There is a second overflow port above the plate, the aeration tank includes a third partition plate, a fourth partition plate and an aeration mechanism, and the third partition plate is located in the aeration tank close to the second partition plate. position, a first channel is provided below the third partition, the fourth partition is the side wall of the aeration tank away from the second anoxic tank, and the fourth partition is provided with The second channel, the aeration tank is communicated with the second anoxic tank through the second overflow port and the first channel, and the aeration mechanism is arranged between the third partition plate and the fourth partition plate, The aeration mechanism is used to increase the oxygen content of the sewage in the aeration tank; an aerobic pool, the aerobic pool is located on the side of the aeration pool close to the fourth partition, the aerobic pool is communicated with the aeration pool through the second channel, and the aerobic pool is cultured with nitrifying bacteria; A filter tank, the filter tank is located on the side of the aerobic tank away from the second channel, the filter tank is communicated with the aerobic tank through the third overflow port, the filter tank and the anoxic tank are A backflow mechanism is arranged between the pools, the filter pool includes a filter mechanism, and the filter mechanism is used to filter the sewage and store it in the water purification chamber, and a second water delivery mechanism is arranged above the filter pool. The water delivery mechanism is used for drawing out the water in the water purification chamber. 2 . The sewage treatment equipment according to claim 1 , wherein the solid-liquid separation mechanism comprises a first driving mechanism and a water filtering bucket; 2 . The first driving mechanism includes a first motor and a first gear, the first motor is fixedly arranged outside the upper end of the pretreatment tank, and the rotating shaft of the first motor passes through the pretreatment vertically downwards the upper end of the pool, the first gear is coaxially and fixedly connected with the rotating shaft of the first motor; The water inlet is provided with a water inlet baffle ring, a coarse filter plate is arranged in the water inlet baffle ring, and the inner wall of the upper end of the water filter bucket is rotatably connected with the outer wall of the water inlet baffle ring through a bearing. A first gear ring is fixedly arranged on the outer wall of the upper end of the water filter bucket, and the first gear ring is engaged with the first gear; A plurality of water leakage holes are arranged on the barrel wall of the water filtering barrel, and a shielding slope is fixedly connected to the outer wall below the plurality of the water leakage holes; Two triangular shaped gaps are oppositely arranged on the wall surface of the lower end of the water filter bucket, two semicircular shielding plates are arranged below the two gaps, and the two ends of the diameter sides of the two shielding plates are respectively connected with the two shielding plates. The vertices of each of the gaps are hinged, and one end of the two shielding plates away from the respective hinges is fixedly connected with a piece of weight through a wire. 3. The sewage treatment equipment according to claim 2, wherein the aeration mechanism comprises a second motor, a rotating shaft, a plurality of first connecting rods, a first casing, a plurality of jet pipes, a first Two casings, an air intake impeller, a third casing and a water intake impeller, the second motor is fixed above the aeration tank, the rotating shaft of the second motor is vertically downward, and the rotating shaft Vertically arranged below the second motor, the upper end of the rotating shaft is coaxially fixed with the rotating shaft of the second motor, and a plurality of first connecting rods, inlet Air impeller and water inlet impeller; A plurality of the first connecting rods are fixedly connected to the rotating shaft in a radial shape, the first housing is fixedly arranged below the plurality of the first connecting rods, and the jet tubes are fixedly arranged radially on the rotating shaft. On the first casing, the jet pipe includes a horizontal pipe and an inclined pipe that are integrally connected, the horizontal pipe passes through the first casing and protrudes into the first casing, the horizontal pipe and the inclined pipe The connection point of the inclined pipe is fixedly connected with the first casing, and the end of the inclined pipe away from the first casing is inclined from the connection between the horizontal pipe and the inclined pipe to the side away from the first casing. Extending from above, the free ends of the horizontal pipe and the inclined pipe both form openings; The second casing is located below the first connecting rod, the outer wall of the second casing is fixedly connected with a plurality of the first connecting rods, and the air inlet impeller is located in the container of the second casing. cavity; The third shell is located below the first shell, the inner wall of the third shell is rotatably connected with the outer wall of the first shell through a bearing, and the water inlet impeller is located in the third shell inside the cavity; A circle of floating parts is fixed on the outer wall of the first shell, and a plurality of connecting chains fixedly connected with the first shell are arranged below the floating part, and the first shell is connected to the first shell through the connecting chains. The third spacer is connected to the fourth spacer. 4. A sewage treatment equipment as claimed in claim 3, characterized in that: the filter mechanism comprises a filter membrane group and a filter barrel; The filter membrane group is vertically arranged on the side of the filter barrel close to the third overflow port, and the filter membrane group includes several vertically arranged filter membranes; The filter barrel includes an outer barrel layer, a first filter layer, a second filter layer and an inner barrel layer vertically arranged from the outside to the inside, the outer barrel layer and the inner barrel layer are provided with a number of through holes, and the inner barrel layer is The inner side is the water purification chamber, the first filter layer is an activated carbon layer, the second filter layer is a sponge layer, and the ratio of the thickness of the first filter layer and the second filter layer is 2:1. 5 . The sewage treatment equipment according to claim 4 , wherein the first water conveying mechanism comprises a first pump, a first connecting pipe and a second connecting pipe, and the pretreatment tank passes through the first The connecting pipe is communicated with the water outlet of the first suction pump, and the first anoxic tank is communicated with the water outlet of the first suction pump through the second connecting pipe; The second water delivery mechanism includes a second water pump, a third connection pipe and a fourth connection pipe, the water purification chamber is communicated with the water suction port of the second water pump through the third connection pipe, and the fourth The connecting pipe is fixedly connected with the water outlet of the second water pump; The return mechanism includes a sludge return pump, a fifth connection pipe and a sixth connection pipe, the filter tank is communicated with the sludge return pump through the fifth connection pipe, and the sludge return pump passes through the fifth connection pipe. Six connecting pipes are communicated with the first anoxic pool. 6 . The sewage treatment equipment according to claim 5 , wherein filter plates are provided at the second passages. 7 . 7 . The sewage treatment equipment according to claim 6 , wherein the aerobic pool is filled with suspending balls. 8 .