CN110981117A

CN110981117A - Integrated domestic sewage treatment device

Info

Publication number: CN110981117A
Application number: CN201911390324.XA
Authority: CN
Inventors: 薛松; 胡代平
Original assignee: Wuxi Lvyin Environmental Protection Co Ltd
Current assignee: Wuxi Lvyin Environmental Protection Co Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-04-10

Abstract

The invention provides an integrated domestic sewage treatment device which comprises an adjusting tank, a first sedimentation tank, a biological contact oxidation tank, a second sedimentation tank, a slag discharge tank and a disinfection tank, wherein the adjusting tank is provided with a filter grid, the adjusting tank is communicated with the first sedimentation tank, the first sedimentation tank is communicated with the biological contact oxidation tank, the biological contact oxidation tank is communicated with the second sedimentation tank, the second sedimentation tank is communicated with the disinfection tank through a pipeline, a chemical adding pipeline for adding a disinfectant is also connected onto the disinfection tank, a slag discharge valve is arranged between the first sedimentation tank and the slag discharge tank, and the adjusting tank is internally provided with the filter grid. The device can filter, purify and disinfect domestic sewage, is convenient for secondary utilization of the wastewater, and improves the utilization rate of the water.

Description

Integrated domestic sewage treatment device

Technical Field

The invention relates to the technical field of sewage treatment, in particular to an integrated domestic sewage treatment device.

Background

Domestic sewage is mainly discharged water generated by various kitchen water, washing water and toilet water used in human life, is mostly non-toxic inorganic salts, contains more nitrogen, phosphorus and sulfur, has more pathogenic bacteria, and is one of main pollution sources of water bodies in the process of human life. Mainly feces and washing sewage. The daily discharge of domestic sewage of each person in a city is 150-400L, and the quantity of the domestic sewage is closely related to the living standard. The domestic sewage contains a large amount of organic matters, such as cellulose, starch, saccharides, fat protein and the like; also frequently contain pathogenic bacteria, viruses and parasite eggs; chlorides, sulfates, phosphates, bicarbonates, and sodium, potassium, calcium, magnesium, and the like, of inorganic salts. The total characteristics are that the nitrogen, sulfur and phosphorus contents are high, and the malodorous substances are easy to generate under the action of anaerobic bacteria. After the nineties of the twentieth century, the sewage treatment industry in China enters a rapid development period, the acceleration of the sewage treatment requirement is far higher than the global level, the existing sewage treatment equipment is low in efficiency and inconvenient to use, the waste water cannot be reused, the standard of energy conservation and emission reduction cannot be achieved, and the problems are difficult to overcome in the prior art.

Disclosure of Invention

In view of the above, the present invention provides an integrated domestic sewage treatment apparatus, which effectively improves sewage treatment efficiency, reaches the standard of energy saving discharge, and can make waste water reutilized.

The invention solves the technical problems by the following technical means: the invention provides an integrated domestic sewage treatment device, which comprises an adjusting tank, a first sedimentation tank, a biological contact oxidation tank, a second sedimentation tank, a slag discharge tank and a disinfection tank, wherein the adjusting tank is provided with a filter grid, the bottom of the adjusting tank is communicated with the upper part of the first sedimentation tank through a pipeline, the bottom of the first sedimentation tank is communicated with the biological contact oxidation tank through a pipeline, the upper part of the biological contact oxidation tank is communicated with the bottom of the second sedimentation tank, the upper part of the second sedimentation tank is communicated with the disinfection tank through a pipeline, the disinfection tank is connected with a water outlet pipeline, the disinfection tank is also connected with a medicine adding pipeline for adding a disinfectant, the other end of the medicine adding pipeline is connected with disinfection equipment, the bottom of the first sedimentation tank is provided with a slag outlet, the slag outlet is communicated with the slag discharge tank through a pipeline, and a slag discharge valve is arranged between the first sedimentation tank and the slag discharge tank, and a filtering grid for intercepting and removing impurities in the sewage is arranged in the regulating tank.

Further, be provided with screen cloth and cleaning device in the first sedimentation tank, the vertical setting of screen cloth, the screen cloth sets up between the water inlet and the delivery port of first sedimentation tank, cleaning device includes shower nozzle and mud scraper, the shower nozzle setting is used for washing the screen cloth above the screen cloth, the side laminating of mud scraper is on the screen cloth, the both ends of mud scraper slide and set up on the lateral wall of first sedimentation tank, screen cloth length direction reciprocating motion can be followed to the mud scraper.

Further, be provided with on the both sides lateral wall of first sedimentation tank along screen cloth length direction's spout, reciprocating motion in the spout at the both ends of scraper, first sedimentation tank bottom is provided with the sprocket, and the top is provided with the motor, be connected through the chain between motor and the sprocket, the chain is parallel with the spout the scraper is fixed to be set up on the chain, drives scraper reciprocating motion in the spout through the positive and negative rotation of motor.

Further, first sedimentation tank is provided with two side by side, and through pipeline and three-way valve and equalizing basin intercommunication, through two first sedimentation tanks of the flow direction of three-way valve control sewage respectively asynchronism, is convenient for wash idle first sedimentation tank, and two first sedimentation tanks are respectively through pipeline and biological contact oxidation pond intercommunication.

Further, a water inlet communicated with the urban sewage pipeline and a water outlet communicated with the biological contact oxidation tank are arranged on the adjusting tank, the filtering grille is arranged between the water inlet and the water outlet, and the filtering grille is a rotary grille.

Further, the biological contact oxidation pond is including the anaerobism pond, oxygen deficiency pond and the good oxygen pond that communicate in proper order, anaerobism pond and first sedimentation tank intercommunication, good oxygen pond and second sedimentation tank intercommunication, the bottom in anaerobism pond, oxygen deficiency pond and good oxygen pond is provided with aeration equipment respectively, aeration equipment passes through trachea and aeration fan intercommunication.

Further, aeration equipment includes that support, aeration are responsible for and aeration branch pipe, the support is fixed to be set up in anaerobism pond, oxygen deficiency pond and good oxygen pond bottom, aeration is responsible for the setting and is connected on the support and with the trachea, aeration branch pipe passes through the connector and connects on aeration is responsible for, the cross sectional dimension of connector is less than aeration branch pipe's cross sectional dimension, evenly be provided with a plurality of aeration holes on aeration branch pipe's the pipe wall.

Furthermore, the aeration branch pipes are provided with a plurality of aeration branch pipes which are uniformly arranged on the aeration main pipe and communicated with each other.

According to the technical scheme, the invention has the beneficial effects that: the invention provides an integrated domestic sewage treatment device, which comprises an adjusting tank, a first sedimentation tank, a biological contact oxidation tank, a second sedimentation tank, a slag discharge tank and a disinfection tank, wherein the adjusting tank is provided with a filter grid, the bottom of the adjusting tank is communicated with the upper part of the first sedimentation tank through a pipeline, the bottom of the first sedimentation tank is communicated with the biological contact oxidation tank through a pipeline, the upper part of the biological contact oxidation tank is communicated with the bottom of the second sedimentation tank, the upper part of the second sedimentation tank is communicated with the disinfection tank through a pipeline, the disinfection tank is connected with a water outlet pipeline, the disinfection tank is also connected with a medicine adding pipeline for adding a disinfectant, the other end of the medicine adding pipeline is connected with disinfection equipment, the bottom of the first sedimentation tank is provided with a slag outlet, the slag outlet is communicated with the slag discharge tank through a pipeline, and a slag discharge valve is arranged between the first sedimentation tank and the slag discharge tank, and a filtering grid for intercepting and removing impurities in the sewage is arranged in the regulating tank. The device can filter, purify and disinfect domestic sewage, is convenient for secondary utilization of the wastewater, improves the utilization rate of water so as to achieve the effect of cyclic utilization, prevents water resource waste and saves energy.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic view of an integrated domestic sewage treatment apparatus provided by the present invention;

FIG. 2 is a schematic view of an aeration apparatus of the integrated domestic sewage treatment apparatus provided in the present invention;

FIG. 3 is a schematic view of the inside of a first settling tank of the integrated domestic sewage treatment device provided by the present invention;

FIG. 4 is a cross-sectional view of FIG. 3;

reference numerals:

1-a regulating reservoir; 2-a first sedimentation tank; 3-biological contact oxidation pond; 4-a second sedimentation tank; 5-a slag discharging pool; 6-a disinfection tank; 11-a filter grid; 31-an anaerobic tank; 32-anoxic pond; 33-an aerobic tank; 34-an aeration device; 341-aeration main pipe; 342-an aeration branch pipe; 343-aeration holes; 21-a screen mesh; 22-a cleaning device; 23-a slag outlet; 221-a mud scraper; 222-chain.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

Referring to fig. 1 to 4, the invention provides an integrated domestic sewage treatment device, which comprises an adjusting tank 1, a first sedimentation tank 2, a biological contact oxidation tank 3, a second sedimentation tank 4, a slag discharge tank 5 and a disinfection tank 6, wherein the adjusting tank 1 is provided with a filter grid 11, the bottom of the adjusting tank 1 is communicated with the upper part of the first sedimentation tank 2 through a pipeline, the bottom of the first sedimentation tank 2 is communicated with the biological contact oxidation tank 3 through a pipeline, the upper part of the biological contact oxidation tank 3 is communicated with the bottom of the second sedimentation tank 4, the upper part of the second sedimentation tank 4 is communicated with the disinfection tank 6 through a pipeline, the disinfection tank 6 is connected with a water outlet pipeline, the disinfection tank 6 is also connected with a chemical feeding pipeline for adding a disinfectant, the other end of the chemical feeding pipeline is connected with disinfection equipment, the bottom of the first sedimentation tank 2 is provided with a slag discharge port, the slag discharge port is communicated with the slag discharge tank 5 through a pipeline, a slag discharge valve is arranged between the first sedimentation tank 2 and the slag discharge tank 5, and a filter grid 11 for intercepting and removing impurities in sewage is arranged in the adjusting tank 1. The sewage firstly enters an adjusting tank 1, impurities with larger sizes in the sewage are filtered through a filtering grid 11, then the sewage enters a first sedimentation tank 2, sedimentation is carried out in the first sedimentation tank 2, impurities with smaller sizes are filtered through a screen 21, then the sewage enters a biological contact oxidation tank 3, Rongmaterial and organic pollutants in the sewage are filtered, the concentration of nitrogen is reduced, then suspended matters with specific gravity larger than that of the water are made to sink to the bottom of the tank through the action of gravity in a second sedimentation tank 4, the suspended matters are removed from the water, better effluent quality is guaranteed, finally the effluent is disinfected in a disinfection tank 6 through chlorine, pathogenic microorganisms such as bacteria, escherichia coli, viruses and the like in the water are killed, the treated water is clear and transparent and has no odor, and the discharged clean water is reused. Preventing water resource waste.

As a further improvement to the above technical solution, a screen 21 and a cleaning device are arranged in the first sedimentation tank 2, the screen 21 is vertically arranged, the cleaning device includes a spray head and a scraper 221, the spray head is arranged above the screen 21 and used for washing the screen 21, the screen is arranged between a water inlet and a water outlet of the first sedimentation tank, the side surface of the scraper 221 is attached to the screen 21, two ends of the scraper 221 are slidably arranged on the side wall of the first sedimentation tank 2, and the scraper 221 can reciprocate along the length direction of the screen 21. Set up screen cloth 21 and filter the less impurity in the sewage, establish simultaneously that cleaning device carries out regularly clean to screen cloth 21, prevent that screen cloth 21 from blockking up, scrape off the debris that will adhere to on screen cloth 21 through the up-and-down reciprocating motion of mud scraper 221. Preferably, the two sides of the scraper 221 are wedge-shaped to facilitate scraping off impurities on the screen 21, and the scraper 221 may be triangular to make one side of the triangle fit on the screen 21. And the screen 21 is cleaned by spraying clear water through the spray head during mud scraping. Preferably, a second mud scraper can be arranged at the bottom of the first sedimentation tank, and the second mud scraper can reciprocate between the screen and the slag outlet to scrape mud slag into the slag outlet.

As a further improvement to the above technical solution, the side walls of the two sides of the first sedimentation tank 2 are provided with sliding grooves along the length direction of the screen 21, the two ends of the mud scraping plate 221 reciprocate in the sliding grooves, the bottom of the first sedimentation tank 2 is provided with a chain wheel, the top of the first sedimentation tank is provided with a motor, the motor is connected with the chain wheel through a chain, the chain is parallel to the sliding grooves, the mud scraping plate 221 is fixedly arranged on the chain, and the mud scraping plate 221 is driven to reciprocate in the sliding grooves through the forward and reverse rotation of the motor. A motor is arranged to drive a chain to rotate between the chain wheel and the motor, the mud scraping plate 221 is fixed on the chain, and the motor drives the mud scraping plate 221 to reciprocate in the sliding groove in the process of reciprocating rotation of the forward and reverse rotating chain.

As the further improvement to the above technical scheme, first sedimentation tank 2 is provided with two side by side, and through pipeline and three-way valve and equalizing basin 1 intercommunication, through two first sedimentation tank 2 of the flow direction of three-way valve control sewage difference asynchronism, is convenient for wash idle first sedimentation tank 2, and two first sedimentation tank 2 communicate with biological catalytic oxidation pond 3 through the pipeline respectively. The arrangement of the two first settling tanks 2 in parallel allows one settling tank to be used while the other settling tank is cleaned and deslimed without stopping the treatment of the sewage.

As a further improvement of the technical scheme, the adjusting tank 1 is provided with a water inlet communicated with the urban sewage pipeline and a water outlet communicated with the biological contact oxidation tank 3, the filtering grille 11 is arranged between the water inlet and the water outlet, and the filtering grille 11 is a rotary grille. The rotary grating can effectively separate solid matters, effectively reduce suspended solids SS and chemical oxygen demand COD in water, and reduce the treatment load of subsequent procedures. A group of closed rake tooth chains are assembled by a plurality of same rake tooth machine parts in a staggered and parallel mode, and continuous top-to-bottom circular motion is formed by a group of grooved wheels and chains under the driving of a motor and a speed reducer, so that the purpose of continuously removing grids is achieved.

As a further improvement of the above technical solution, the biological contact oxidation tank 3 comprises an anaerobic tank 1, an anoxic tank 32 and an aerobic tank 33 which are sequentially communicated, the anaerobic tank 1 is communicated with the first sedimentation tank 2, the aerobic tank 33 is communicated with the second sedimentation tank 4, the bottom parts of the anaerobic tank 1, the anoxic tank 32 and the aerobic tank 33 are respectively provided with an aeration device 34, and the aeration device 34 is communicated with an aeration fan through an air pipe.

As a further improvement of the above technical solution, the aeration device 34 comprises a support, an aeration main pipe 341 and an aeration branch pipe 342, the support is fixedly arranged at the bottom of the anaerobic tank 1, the anoxic tank 32 and the aerobic tank 33, the aeration main pipe 341 is arranged on the support and connected with an air pipe, the aeration branch pipe 342 is connected to the aeration main pipe 341 through a connector 344, the cross-sectional dimension of the connector is smaller than that of the aeration branch pipe 342, and a plurality of aeration holes 343 are uniformly arranged on the pipe wall of the aeration branch pipe 342. The sectional area of the connecting head is made smaller than that of the aeration branch pipe 342, so that the gas entering the aeration branch pipe 342 from the aeration main pipe 341 can play the roles of pressure stabilization and buffering.

As a further improvement of the above technical solution, a plurality of aeration branch pipes 342 are provided, a plurality of aeration branch pipes 342 are uniformly arranged on the main aeration pipe 341, and the plurality of aeration branch pipes 342 are communicated with each other. The aeration area in the tank is larger and the reaction is more sufficient due to the arrangement of the plurality of aeration branch pipes 342.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. The utility model provides an integration treatment of domestic sewage device which characterized in that: comprises an adjusting tank (1), a first sedimentation tank (2), a biological contact oxidation tank (3), a second sedimentation tank (4), a slag discharge tank (5) and a disinfection tank (6), wherein the adjusting tank (1) is provided with a filter grid (11), the bottom of the adjusting tank (1) is communicated with the upper part of the first sedimentation tank (2) through a pipeline, the bottom of the first sedimentation tank (2) is communicated with the biological contact oxidation tank (3) through a pipeline, the upper part of the biological contact oxidation tank (3) is communicated with the bottom of the second sedimentation tank (4), the upper part of the second sedimentation tank (4) is communicated with the disinfection tank (6) through a pipeline, the disinfection tank (6) is connected with a water outlet pipeline, the disinfection tank (6) is also connected with a chemical adding pipeline for adding disinfectant, the other end of the chemical adding pipeline is connected with the disinfection equipment, the bottom of the first sedimentation tank (2) is provided with a slag discharge hole, the slag notch passes through the pipeline and arranges sediment pond (5) intercommunication, be provided with the sediment valve between first sedimentation tank (2) and sediment pond (5), be provided with in equalizing basin (1) and be used for the interception and clear away filtration grid (11) of debris in the sewage.

2. The integrated domestic sewage treatment apparatus according to claim 1, wherein: be provided with screen cloth (21) and cleaning device in first sedimentation tank (2), the vertical setting of screen cloth (21), the screen cloth sets up between the water inlet and the delivery port of first sedimentation tank, cleaning device includes shower nozzle and mud scraper (221), the shower nozzle setting is used for washing screen cloth (21) above screen cloth (21), the side laminating of mud scraper (221) is on screen cloth (21), the both ends of mud scraper (221) slide and set up on the lateral wall of first sedimentation tank (2), screen cloth (21) length direction reciprocating motion can be followed to mud scraper (221).

3. The integrated domestic sewage treatment apparatus according to claim 2, wherein: be provided with on the both sides lateral wall of first sedimentation tank (2) along screen cloth (21) length direction's spout, the both ends reciprocating motion in the spout of mud scraper (221), first sedimentation tank (2) bottom is provided with the sprocket, and the top is provided with the motor, be connected through the chain between motor and the sprocket, the chain is parallel with the spout mud scraper (221) are fixed to be set up on the chain, drive mud scraper (221) reciprocating motion in the spout through the just reversal of motor.

4. The integrated domestic sewage treatment apparatus according to claim 2, wherein: first sedimentation tank (2) are provided with two side by side, and through pipeline and three-way valve and equalizing basin (1) intercommunication, through two first sedimentation tank (2) of flow direction of three-way valve control sewage difference when not in phase, are convenient for wash idle first sedimentation tank (2), and two first sedimentation tank (2) communicate through pipeline and biological catalytic oxidation pond (3) respectively.

5. The integrated domestic sewage treatment apparatus according to claim 1, wherein: the adjusting tank (1) is provided with a water inlet communicated with the urban sewage pipeline and a water outlet communicated with the biological contact oxidation tank (3), the filtering grille (11) is arranged between the water inlet and the water outlet, and the filtering grille (11) is a rotary grille.

6. The integrated domestic sewage treatment apparatus according to claim 1, wherein: biological contact oxidation pond (3) are including anaerobism pond (1), oxygen deficiency pond (32) and good oxygen pond (33) that communicate in proper order, anaerobism pond (1) and first sedimentation tank (2) intercommunication, good oxygen pond (33) and second sedimentation tank (4) intercommunication, the bottom in anaerobism pond (1), oxygen deficiency pond (32) and good oxygen pond (33) is provided with aeration equipment (34) respectively, aeration equipment (34) are through trachea and aeration fan intercommunication.

7. The integrated domestic sewage treatment apparatus according to claim 6, wherein: the aeration device (34) comprises a support, an aeration main pipe (341) and aeration branch pipes (342), wherein the support is fixedly arranged at the bottoms of the anaerobic tank (1), the anoxic tank (32) and the aerobic tank (33), the aeration main pipe (341) is arranged on the support and is connected with an air pipe, the aeration branch pipes (342) are connected onto the aeration main pipe (341) through connectors, the cross-sectional dimension of each connector is smaller than that of each aeration branch pipe (342), and a plurality of aeration holes (343) are uniformly formed in the pipe walls of the aeration branch pipes (342).

8. The integrated domestic sewage treatment apparatus according to claim 7, wherein: the aeration branch pipes (342) are arranged in a plurality, the aeration branch pipes (342) are uniformly arranged on the aeration main pipe (341), and the aeration branch pipes (342) are communicated with each other.