Multifunctional sewage treatment system

Abstract

The present invention belongs to the technical field of sewage treatment, and discloses a multifunctional sewage treatment system, including a closed container, on which a feed port, a liquid outlet, a scum outlet, a sediment outlet and a gas pressure relief collection device are provided; the gas pressure relief collection device includes a gas collecting chamber, on which a first gas collecting channel and a second gas collecting channel are provided, the first gas collecting channel is provided with a first valve, the second gas collecting channel is provided with a second valve, a common slag baffle is provided between the opposite side walls of the first gas collecting channel and the second gas collecting channel, a first connecting hole connected to the gas channel is provided on the side wall of the first gas collecting channel, and a second connecting hole connected to the gas channel is provided on the side wall of the second gas collecting channel. The multifunctional sewage treatment system provided by the present invention ensures safe operation of the system by pressure relief of the gas pressure control system in the gas pressure relief collection device, controls the discharge of scum from the scum outlet by adjusting the water level of the liquid outlet, and has low operation and maintenance costs.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a multifunctional sewage treatment system. Background Art

[0002] Sewage treatment is an important part of current environmental protection measures. At present, biogas tanks, UASB reactors and IC three-phase fermentation towers are often used for sewage treatment. They are all vertically constructed, which are restricted by span and affect equipment capacity. In addition, the construction design cost is high, the safety factor is low and the service life is short. At the same time, during the treatment of sewage in the container, scum crusting is generated, which affects the normal operation of the equipment. In order to solve the problem of scum being treated by agitators, it consumes energy and increases the manufacturing cost of the equipment. Methane gas is generated during operation. When feeding, a large amount of gas overflows from top to bottom under the combined force of the sewage's own gravity and the sewage cutting pump's conveying force, causing the air pressure in the container to increase. The general pressure reducing valve becomes blocked and fails after a long period of use, reducing sensitivity and affecting the safety of equipment operation. Summary of the invention

[0003] The present invention aims to solve the above technical problems at least to a certain extent. To this end, the present invention aims to provide a multifunctional sewage treatment system.

[0004] The technical solution adopted by the present invention is:

[0005] A multifunctional sewage treatment system comprises a sealed container, wherein the sealed container forms an incubation space, and the sealed container is provided with a feed inlet, a liquid outlet, a scum outlet and a gas pressure relief collection device which are connected with the incubation space; the gas pressure relief collection device comprises an air collecting chamber protruding from the upper end of the sealed container, the air collecting chamber is provided with a first air collecting channel and a second air collecting channel which extend into the incubation space, the first air collecting channel is provided with a first valve, the second air collecting channel is provided with a second valve, a scum retaining plate is provided between opposite side walls of the first air collecting channel and the second air collecting channel, the scum retaining plate, the side walls of the first air collecting channel and the side walls of the second air collecting channel form a gas channel, the side walls of the first air collecting channel are provided with a first connecting hole which is connected with the gas channel, the side walls of the second air collecting channel are provided with a second connecting hole which is connected with the gas channel, the first connecting hole and the top wall of the sealed container are located on the same horizontal plane, and the second connecting hole is located below the first connecting hole.

[0006] Preferably, anti-blowout nets are provided in both the first air collection channel and the second air collection channel.

[0007] Preferably, a heating cabin is provided on the sealed container, the heating cabin extends into the incubation space, a constant temperature heater is provided in the heating cabin, and a heat transfer fluid is filled between the constant temperature heater and the heating cabin.

[0008] Preferably, the scum outlet is convexly arranged at the upper end of the closed container, and an openable and closable valve is provided on the scum outlet.

[0009] Preferably, the sealed container is provided with a slag discharge channel extending toward the bottom of the incubation space, and a slag discharge mechanism is installed in the slag discharge channel.

[0010] Preferably, the slag discharge mechanism is a sewage cutting pump or an auger.

[0011] Preferably, the sealed container comprises an incubation chamber and a top wall.

[0012] The beneficial effects of the present invention are:

[0013] The multifunctional sewage treatment system provided by the present invention ensures safe operation of the system by releasing pressure through the gas pressure control system in the gas pressure relief collection device. Its cylindrical horizontal underground construction is not limited by span and materials. It can be made of glass fiber reinforced plastics, stainless steel, carbon steel, various plastics, reinforced concrete and other materials. It is buried underground to increase the service life of the equipment, with small investment, low operation and maintenance costs, good treatment effect, high treatment efficiency, and no secondary pollution. The horizontal underground design and the setting of the heating chamber enable the system to operate normally in low temperature seasons throughout the year and in different low temperature regions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the principle structure of the multifunctional sewage treatment system of the present invention.

[0015] Figure 2 It is a top view of the interior of the gas collecting cabin of the present invention.

[0016] In the figure: 1-sealed container; 2-feeding port; 3-liquid outlet; 4-slag outlet; 5-gas collecting chamber; 6-first air collecting channel; 7-second air collecting channel; 8-first valve; 9-second valve; 10-slag baffle; 11-first connecting hole; 12-second connecting hole; 13-blowout prevention net; 14-heating chamber; 15-constant temperature heater; 16-heat transfer liquid; 17-slag discharge channel; 18-slag discharge mechanism; 100-slag layer; 200-liquid layer; 300-slag layer. DETAILED DESCRIPTION

[0017] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention. The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations.

[0018] In the description of the embodiments of the present invention, it should be noted that the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0019] In the present invention, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two or more components.

[0020] like Figure 1 and Figure 2 As shown, the multifunctional sewage treatment system of this embodiment comprises a sealed container 1 which is roughly in the shape of a rectangular parallelepiped. The sealed container 1 is arranged horizontally. The sealed container 1 comprises an incubation cabin and a top wall. The top wall is sealed and connected to the upper opening of the incubation cabin, so that the incubation cabin forms a large-capacity incubation space. The sealed container 1 is provided with a feed port 2, a liquid outlet 3, a scum outlet 4 and a gas pressure relief collection device which are connected to the incubation space. The feed port 2, the liquid outlet 3, the scum outlet 4 and the gas pressure relief collection device can all be opened and closed. The sewage is fed into the incubation space from top to bottom through the closed sleeve through the feed port 2. The sewage forms a scum layer 100, a liquid layer 200 and a scum layer 300 in the incubation space from bottom to top. A leakage net is provided in the incubation cabin to separate the scum layer 100 and the liquid layer 200, so that the scum will not be washed into the liquid layer 200 when feeding.

[0021] The gas pressure relief collection device includes a gas collecting cabin 5 protrudingly mounted on the top wall. The gas collecting cabin 5 is roughly cylindrical. The gas collecting cabin 5 is provided with a first gas collecting channel 6 and a second gas collecting channel 7. The lower ends of the first gas collecting channel 6 and the second gas collecting channel 7 extend into the incubation space and are located in the liquid layer 200. A first valve 8 is provided at the upper end of the first gas collecting channel 6, and a second valve 9 is provided at the upper end of the second gas collecting channel 7. Anti-spray nets 13 are provided in the first gas collecting channel 6 and the second gas collecting channel 7. The first valve 8 and the second valve 9 are both gas outlets during pressure relief, and both the first valve 8 and the second valve 9 can be pressure relief valves.

[0022] Two parallel common slag baffles 10 are provided between the opposite side walls of the first air collecting channel 6 and the second air collecting channel 7. The two slag baffles 10, a side wall of the first air collecting channel 6 and a side wall of the second air collecting channel 7 form a gas channel. The lower end of the gas channel is roughly flush with the lower end of the first air collecting channel 6, and there is a gap between the upper end of the gas channel and the inner top of the gas collecting chamber 5. A first connecting hole 11 connected to the gas channel is provided on the side wall of the first air collecting channel 6, and a second connecting hole 12 connected to the gas channel is provided on the side wall of the second air collecting channel 7. The first connecting hole 11 and the inner top wall of the sealed container 1 are located on the same horizontal plane. The inner top wall is the lower surface of the top wall. The top wall presses the scum layer 300 into the liquid for incubation. The incubated scum automatically sinks to the bottom of the incubation chamber under the action of gravity, thereby solving the problem of scum crusting, and the scum outlet 4 is controlled by adjusting the liquid level of the liquid outlet 3 to discharge the scum.

[0023] The upper surface of the scum layer 300 is roughly flush with the first connecting hole 11; the second connecting hole 12 and the first connecting hole 11 are not on the same horizontal plane, the second connecting hole 12 is located below the first connecting hole 11, and the space between the two connecting holes is a gas production and storage chamber for gas production regulation. The first valve can be used for scum crust prevention treatment, and the second valve is used for gas production control. The gas pressure relief collection device automatically controls and regulates the pressure relief by generating gas pressure through internal gas production to raise and lower the liquid level to the first connecting hole 11 or the second connecting hole 12 for exhaust.

[0024] The gas pressure relief collection device is regulated by the first valve 8 and the second valve 9. When the scum outlet 4 and the first valve 8 are closed, the system is in the gas production state; when the scum outlet 4 and the second valve 9 are closed, the system is incubating scum to prevent crusting; when the scum outlet 4 and the second valve 9 are opened, the system adjusts the water level through the liquid outlet 3, that is, the slag discharge working state.

[0025] When the multifunctional sewage treatment system is used to produce biogas, the first valve 8 is closed and the second valve 9 is opened. The gas first enters the gas collecting chamber 5, then enters the gas channel from the upper end of the gas channel from the gas collecting chamber 5, and then passes through the second connecting hole 12 through the anti-blowout net 13 and the second valve 9 through the pipeline to the gas purification system for collection and treatment. The slag blocking plate 10 can effectively block the slag outside the gas channel to prevent the slag from entering the first connecting hole 11 and the second connecting hole 12 to cause blockage.

[0026] When the gas pressure relief collection device is used for pressure relief, the gas generated in the incubation space enters the gas channel through the gas collecting chamber 5, and the liquid level drops to the first connecting hole 11 or the second connecting hole 12 under the action of the gas pressure. The gas enters the corresponding gas collection channel from the first connecting hole 11 or the second connecting hole 12, and passes through the anti-blowout net to prevent the gas from bringing out the liquid. The gas is collected and reused by the first valve 8 or the second valve 9, and the pressure is relieved through the gas pressure control system in the gas pressure relief collection device to ensure the safe operation of the system.

[0027] When sewage is incubated in the incubation chamber, in order to solve the problem of low temperature in winter affecting the treatment effect, the closed container is buried below the underground permafrost layer and a heating chamber 14 is provided on the closed container 1. The bottom of the heating chamber 14 extends into the incubation space until the scum layer 300. A constant temperature heater 15 is provided in the heating chamber 14, and a heat transfer liquid 16 is filled between the constant temperature heater 15 and the heating chamber 14.

[0028] In this embodiment, clean water is used as the heat transfer fluid 16. The heating chamber 14 is filled with clean water, and the constant temperature heater 15 is placed in the clean water to heat the clean water to about 30 degrees. The heat energy of the constant temperature heater 15 is transferred to the clean water, and then the heat energy is transferred to the sediment layer 100, the liquid layer 200 and the scum layer 300 through the clean water. This not only protects the constant temperature heater 15, but also prevents the sewage suspended matter from adhering to the heating tube of the constant temperature heater when the constant temperature heater directly contacts the sewage, affecting the heat dissipation of the heating tube and causing it to burn out; at the same time, it can achieve heating of sewage at low temperature, ensure the normal operation of equipment in low temperature seasons and low temperature areas, and avoid high maintenance costs due to large investment and high energy consumption of boiler heating.

[0029] The closed container 1 is provided with a sediment outlet, which can be opened and closed. The sediment outlet can be provided with a slag discharge channel 17 extending to the bottom of the incubation space, and a slag discharge mechanism 18 is installed in the slag discharge channel 17. The slag outlet 4 is convexly arranged at the upper end of the closed container 1, and a valve that can be opened and closed is provided on the slag outlet 4, and the valve can be a ball valve. When the slag outlet 4 is opened, the system is in the sewage direct discharge function. The slag is discharged from the slag outlet through the first valve, the second valve and the liquid level adjustment control of the liquid outlet, and the slag is reduced. Dissolved in the liquid, the difficulty of the back-end processing is reduced and the back-end processing cost is reduced. When the multifunctional sewage treatment system is used as a special equipment for organic fertilizer, the slag outlet 4 is closed, and the slag will be pressed into the liquid by the top wall, and the water level is controlled by the liquid outlet 3 to immerse the slag in the liquid for incubation. The hatched slag settles in the slag layer under the action of gravity and is extracted by the slag discharge mechanism 18 in the slag discharge channel 17. In this embodiment, the slag discharge mechanism 18 adopts a sewage cutting pump. In other embodiments, the slag discharge mechanism 18 may adopt an auger.

[0030] When the multifunctional sewage treatment system is used for sewage treatment in the fields of domestic sewage, kitchen waste, garbage leachate, river source sewage and industrial sewage, the scum outlet 4 is opened. When feeding in succession, the scum increases and floats up under the action of buoyancy. When floating to the top wall, the scum is pressed against the scum layer and discharged through the outlet of the scum outlet 4. The scum discharge control is controlled by the gas pressure relief collection device and the liquid outlet 3 to adjust the water level.

[0031] The liquid without suspended matter, odor, bacteria, heavy metals and chemical residues after treatment by the multifunctional sewage treatment system is discharged for use through the liquid outlet 3. The liquid outlet 3 is not only a discharge port, but also an interconnection port for multiple multifunctional sewage treatment systems to be connected in series or in parallel, so that multiple multifunctional sewage treatment systems can be used individually or in combination according to the amount of sewage treated daily.

[0032] The controller is connected to the electrical equipment such as the slag discharge mechanism 18 and the constant temperature heater 15 to realize automatic control. The gas pressure relief collection device makes the liquid level rise and fall under the pressure of the produced gas to open and close the connecting port to realize automatic pressure regulation, and the gas is automatically discharged from the gas collection channel to realize pressure relief, which saves time, labor and cost, and is durable when used.

[0033] The multifunctional sewage treatment system of this embodiment has a large-span horizontal installation and a cylindrical construction design, and has high compressive strength.

[0034] It is understood that in other embodiments, the sealed container 1 can also be a cylinder, an ellipsoid or other shapes. The gas collecting chamber 5 can also be a cube, a cuboid or a polygon.

[0035] The present invention is not limited to the above optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that imitates the scope defined by the claims of the present invention shall be deemed to be within the protection scope of the present invention.

Claims

1. A multifunctional sewage treatment system, characterized in that: The invention comprises a sealed container (1), wherein the sealed container (1) has an interior space forming an incubation space, and the sealed container (1) is provided with a feed inlet (2), a liquid outlet (3), a scum outlet (4) and a gas pressure relief collection device which are connected to the incubation space; the scum outlet (4) is provided with an openable and closable valve; the gas pressure relief collection device comprises a gas collecting chamber (5) protruding from the upper end of the sealed container (1), the gas collecting chamber (5) is provided with a first gas receiving channel (6) and a second gas receiving channel (7) which extend into the incubation space, the first gas receiving channel (6) is provided with a first valve (8), the second gas receiving channel (7) is provided with a second valve (9), a scum retaining plate (10) is provided between opposite side walls of the first gas receiving channel (6) and the second gas receiving channel (7), and the scum retaining plate (10), the first gas receiving channel ( The side wall of the first air collecting channel (6) and the side wall of the second air collecting channel (7) form a gas channel, the side wall of the first air collecting channel (6) is provided with a first connecting hole (11) connected to the gas channel, the side wall of the second air collecting channel (7) is provided with a second connecting hole (12) connected to the gas channel, the first connecting hole (11) and the top wall of the sealed container (1) are located on the same horizontal plane, and the second connecting hole (12) is located below the first connecting hole (11); the lower end of the first air collecting channel (6) and the lower end of the second air collecting channel (7) both extend into the liquid layer (200) of the incubation space, the first valve (8) and the second valve (9) are both gas outlets during pressure relief; the gas generated in the incubation space can enter the gas channel from the upper end of the gas channel through the gas collecting chamber (5).

2. The multifunctional sewage treatment system according to claim 1, characterized in that: Anti-blowout nets (13) are provided in both the first air collection channel (6) and the second air collection channel (7).

3. The multifunctional sewage treatment system according to claim 1 or 2, characterized in that: The sealed container (1) is provided with a heating chamber (14), the heating chamber (14) extending into the incubation space, a constant temperature heater (15) being provided in the heating chamber (14), and a heat transfer fluid (16) being filled between the constant temperature heater (15) and the heating chamber (14).

4. The multifunctional sewage treatment system according to claim 1, characterized in that: The scum outlet (4) is protrudingly arranged at the upper end of the sealed container (1).

5. The multifunctional sewage treatment system according to claim 1, characterized in that: The sealed container (1) is provided with a slag discharge channel (17) extending towards the bottom of the incubation space, and a slag discharge mechanism (18) is installed in the slag discharge channel (17).

6. The multifunctional sewage treatment system according to claim 5, characterized in that: The slag discharge mechanism (18) is a sewage cutting pump or an auger.

7. The multifunctional sewage treatment system according to claim 1, characterized in that: The sealed container (1) comprises an incubation chamber and a top wall.

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