Cultivation excrement harmless treatment equipment and technological method thereof

Abstract

The invention relates to the technical field of innocent treatment, in particular to innocent treatment equipment for breeding excrement and a technological method of the innocent treatment equipment. The device comprises a treatment mechanism, the treatment mechanism at least comprises a septic tank, the top of the septic tank is provided with an installation top seat, the bottom of the septic tank is provided with a sewage draining exit, and the upper portion of the septic tank is communicated with a feeding port and a suction cup; in the innocent treatment equipment for the breeding excrement, the arranged filtering mechanism is used for performing solid-liquid separation on the breeding excrement put into the septic tank, and the driving mechanism drives the filtering mechanism to ascend and descend in the septic tank so as to fish out solid substances in the excrement; in the process that the reciprocating lead screw drives the shoveling plate to rise gradually, excrement solid matter sliding to the position close to the lower portion of the suction cup is conveniently collected, the shoveling plate and the baffle which are close to each other can extrude out water adsorbed in solid excrement, and meanwhile the baffle can further block volatile gas in the septic tank.

Description

Technical Field

[0001] The present invention relates to the technical field of harmless treatment, and in particular to a device for harmless treatment of livestock excrement and a process method thereof. Background Art

[0002] Livestock and poultry manure is generally a mixture of solid and liquid excrement in livestock and poultry breeding areas, which also includes water used for flushing. Therefore, in a broad sense, livestock and poultry manure refers to a mixture of solid and liquid livestock and poultry manure.

[0003] In the related art, the invention patent with the announcement number CN114031426B discloses an automatic harmless treatment device for livestock and poultry manure, which includes: a filtering and salvaging component, which is arranged in the box body and is used to filter and salvage the filter residue at least once; a driving component, which is used to drive the filtering and salvaging component to slide from the bottom of the box body to the top to realize salvage and flip and unload after salvage. It can be targeted to complete the automatic treatment of the filter residue containing fibers, with a high degree of automation, which is conducive to separating the filter residue from the object to be treated. It can be seen that when treating livestock manure, solid-liquid separation is required, otherwise it will not only have a low fertilizer efficiency when used as fertilizer, but will even affect crop growth.

[0004] In the above patent, livestock feces are separated by means of a filtering and salvaging component. Since livestock feed on grass, their feces contain more cellulose, which makes the feces fluffy and highly absorbent. Therefore, after the filtering and salvaging component salvages the feces at the bottom of the box to a higher place, the salvaged feces still contain a lot of water. Since the water contains a lot of fast-acting nutrients such as ammonium nitrogen, directly applying it to crops can easily cause "burning of seedlings" and affect soil structure and other adverse effects.

[0005] In view of this, we propose a harmless treatment equipment for livestock manure and a process method thereof to improve the deficiencies in the existing technology. Summary of the invention

[0006] The purpose of the present invention is to provide a device for harmless treatment of livestock manure and a process method thereof to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned object, one of the objects of the present invention is to provide a harmless treatment device for livestock manure, including a treatment mechanism, the treatment mechanism at least including a septic tank, the top of the septic tank is provided with a mounting top seat, the bottom of the septic tank is provided with a sewage outlet, and the upper part of the septic tank is respectively connected with a feed port and an extraction suction cup;

[0008] The septic tank is provided with a filtering mechanism and a blocking mechanism in order from low to high. A driving mechanism is provided in the center of the septic tank. The top of the filtering mechanism, the bottom of the blocking mechanism and the inner wall of the septic tank form a material storage cavity. The bottom of the filtering mechanism and the inner wall of the septic tank form a sewage cavity. The filtering mechanism is slidably connected to the inner wall of the septic tank, and the blocking mechanism is fixedly connected to the inner wall of the septic tank.

[0009] The filtering mechanism is used to separate the solid and liquid of the aquaculture feces put into the septic tank, and the driving mechanism drives the filtering mechanism to rise and fall in the septic tank to salvage the solid matter in the feces;

[0010] In the process of the driving mechanism driving the filtering mechanism to gradually rise, the filtering mechanism and the blocking mechanism approaching each other can squeeze out the moisture adsorbed in the solid feces, and the blocking mechanism can block the volatile gas in the septic tank.

[0011] As a further improvement of the present technical solution, the inner bottom wall of the septic tank is fixedly connected to a mounting base at the top of the sewage outlet, the bottom of the mounting base is connected to the sewage outlet, and the end of the extraction suction cup away from the interior of the septic tank is connected to an extraction pump.

[0012] As a further improvement of the technical solution, the filtering mechanism includes a scoop plate arranged above the mounting base, the outer wall of the scoop plate is in close contact with the inner wall of the septic tank, and a plurality of filter holes are formed on the scoop plate.

[0013] As a further improvement of the present technical solution, the driving mechanism includes a motor arranged on the top of the mounting top seat, the output shaft of the motor is downward along the axis of the septic tank, a reciprocating screw is provided at the bottom of the motor, the output shaft of the motor is coaxially connected to the reciprocating screw, the bottom of the reciprocating screw is rotatably connected to the top of the mounting base, a screw nut seat is provided at the center of the copying plate, and the screw nut seat is threadedly connected to the reciprocating screw.

[0014] As a further improvement of the present technical solution, the feed port and the extraction suction cup are respectively located at two ends far away from each other on the cross-sectional diameter of the septic tank.

[0015] As a further improvement of the technical solution, the height of the top of the lifting plate gradually decreases along the direction from the feed inlet to the extraction suction cup.

[0016] As a further improvement of the present technical solution, the blocking mechanism includes a baffle fixedly connected to the inner wall of the septic tank, the bottom of the feed port and the extraction suction cup both pass through the baffle, and the outer walls of the feed port and the extraction suction cup are tightly attached to the perforations of the baffle.

[0017] As a further improvement of the technical solution, the material of the copy plate is polytetrafluoroethylene.

[0018] The second object of the present invention is to provide a method for harmless treatment of livestock manure, comprising the following steps:

[0019] S1. Inject the livestock manure into the septic tank through the feed port. In the manure entering the septic tank, the solid matter is initially intercepted by the filtering mechanism and stays in the storage chamber, while the liquid matter passes through the filtering mechanism and falls into the sewage chamber, and then the liquid matter is discharged from the septic tank through the sewage outlet;

[0020] S2, turning on the power of the driving mechanism, so that it drives the filtering mechanism to rise along the inner wall of the septic tank and approach the blocking mechanism;

[0021] S3. As the filtering mechanism gradually approaches the blocking mechanism, the solid matter on the top of the filtering mechanism gradually slides toward the side close to the extraction suction cup, and the filtering mechanism and the blocking mechanism close to each other squeeze out the liquid adsorbed in the solid matter, and the extraction pump extracts the squeezed solid matter from the storage chamber through the extraction suction cup;

[0022] S4. During the process of solid-liquid separation of feces and salvaging solid matter by the filtering mechanism, the material storage chamber and the sewage chamber are always kept sealed from the outside of the septic tank to prevent the volatile gases in the septic tank from escaping to the outside.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] In the harmless treatment equipment for livestock manure, a filtering mechanism is provided for separating the solid and liquid of the livestock manure put into the septic tank, and a driving mechanism drives the filtering mechanism to rise and fall in the septic tank to salvage the solid matter in the manure; in the process of the reciprocating screw driving the lifting plate to gradually rise, the solid matter of the manure slides to the vicinity of the bottom of the extraction suction cup, which is convenient for collecting the salvaged solid matter, and the lifting plate and baffle plate close to each other can squeeze out the moisture adsorbed in the solid manure, and the baffle plate can also block the volatile gas in the septic tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a partially cutaway perspective view of the present invention;

[0027] Figure 3 It is a partially cut-away left view of the present invention;

[0028] Figure 4 is a cutaway perspective view of the processing mechanism of the present invention;

[0029] Figure 5 is a cutaway perspective view of the filtering mechanism of the present invention;

[0030] Figure 6It is a three-dimensional diagram of the driving mechanism of the present invention;

[0031] Figure 7 It is a cut-away left view of the driving mechanism of the present invention;

[0032] Figure 8 It is a positional relationship diagram of the blocking mechanism and the filtering mechanism of the present invention.

[0033] The meaning of each number in the figure is:

[0034] 100, treatment mechanism; 110, septic tank; 120, top mounting seat; 130, sewage outlet; 131, mounting base; 140, feed inlet; 150, extraction suction cup; 151, extraction pump; 160, material storage chamber; 170, sewage chamber;

[0035] 200, filtering mechanism; 210, copy plate; 220, filter hole;

[0036] 300, driving mechanism; 310, motor; 320, reciprocating screw;

[0037] 400. Blocking mechanism; 410. Baffle. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example 1: In order to utilize the fermented aquaculture manure as waste (solid matter is used as organic fertilizer for plants, and liquid matter is used as fertilizer for aquaculture), it is necessary to perform solid-liquid separation on the aquaculture manure after harmless treatment (generally fermentation).

[0040] See also Figure 1-Figure 3 As shown, the purpose of this embodiment is to provide a harmless treatment device for livestock manure, including a treatment mechanism 100, the treatment mechanism 100 at least includes a septic tank 110, the top of the septic tank 110 is provided with a mounting top seat 120, the bottom of the septic tank 110 is provided with a sewage outlet 130, and the upper part of the septic tank 110 is respectively connected to a feed port 140 and an extraction suction cup 150;

[0041] The septic tank 110 is provided with a filtering mechanism 200 and a blocking mechanism 400 in order from the bottom to the top. A driving mechanism 300 is provided in the center of the septic tank 110. The upper part of the filtering mechanism 200, the lower part of the blocking mechanism 400 and the inner wall of the septic tank 110 form a material storage chamber 160. The bottom of the filtering mechanism 200 and the inner wall of the septic tank 110 form a sewage chamber 170. The filtering mechanism 200 is slidably connected to the inner wall of the septic tank 110, and the blocking mechanism 400 is fixedly connected to the inner wall of the septic tank 110.

[0042] The filter mechanism 200 is used to separate the solid and liquid of the livestock manure put into the septic tank 110, and the driving mechanism 300 drives the filter mechanism 200 to rise and fall in the septic tank 110 to salvage the solid matter in the manure;

[0043] When the driving mechanism 300 drives the filtering mechanism 200 to gradually rise, the filtering mechanism 200 and the blocking mechanism 400 approaching each other can squeeze out the moisture adsorbed in the solid feces, and the blocking mechanism 400 can block the volatile gas in the septic tank 110.

[0044] Working principle:

[0045] First, the livestock manure is injected into the septic tank 110 through the feed port 140. In the manure entering the septic tank 110, the solid matter is initially intercepted by the filter mechanism 200 and stays in the storage chamber 160, and the liquid matter passes through the filter mechanism 200 and falls into the sewage chamber 170, and then the liquid matter is discharged from the septic tank 110 through the sewage outlet 130;

[0046] Next, the power of the driving mechanism 300 is turned on, so that the driving mechanism 300 drives the filtering mechanism 200 to rise along the inner wall of the septic tank 110 and approach the blocking mechanism 400;

[0047] When the filter mechanism 200 gradually approaches the blocking mechanism 400, the solid matter on the top of the filter mechanism 200 gradually slides toward the side close to the extraction suction cup 150, and the filter mechanism 200 and the blocking mechanism 400 approaching each other squeeze out the liquid adsorbed in the solid matter, and the extraction pump 151 extracts the squeezed solid matter from the storage chamber 160 through the extraction suction cup 150;

[0048] During the process of solid-liquid separation of feces and salvaging solid matter by the above-mentioned filtering mechanism 200, the material storage chamber 160 and the sewage chamber 170 are always kept sealed from the outside of the septic tank 110 to prevent the volatile gas in the septic tank 110 from escaping to the outside.

[0049] like Figure 4As shown, the inner bottom wall of the septic tank 110 is fixedly connected to a mounting base 131 at the top of the sewage outlet 130, the bottom of the mounting base 131 is connected to the sewage outlet 130, and the end of the extraction suction cup 150 away from the interior of the septic tank 110 is connected to an extraction pump 151.

[0050] That is to say, when the harmless treatment equipment treats animal feces, the entire treatment process from injecting the farm feces into the septic tank 110, to fermenting the farm feces and separating the fermented feces into solids and liquids is carried out in the septic tank 110. It can prevent the pungent and flammable gases generated during the feces fermentation process from being emitted into the surrounding environment, especially if the flammable methane generated by fermentation leaks, it will not only cause a waste of resources, but also have certain dangers.

[0051] Although livestock manure is the main raw material for farmyard manure, unfermented manure cannot be used as fertilizer. After harmless treatment such as fermentation, the solid and liquid substances in the manure can be separated for different purposes. Therefore, it is necessary to separate the fermented manure into solid and liquid.

[0052] exist Figure 5 In the figure, the filtering mechanism 200 includes a lifting plate 210 disposed above the mounting base 131 , the outer wall of the lifting plate 210 is in close contact with the inner wall of the septic tank 110 , and a plurality of filter holes 220 are formed on the lifting plate 210 .

[0053] Therefore, when the breeding manure collected in the breeding farm is injected into the septic tank 110 for fermentation, the lifting plate 210 is at the lowest position in the septic tank 110 (the bottom of the lifting plate 210 is close to the top of the mounting base 131). During this process, the solid and liquid substances in the breeding manure are mixed together for fermentation reaction. After the fermentation is completed, the lifting plate 210 rises to pick up the solid substances in the breeding manure from the bottom of the septic tank 110, so that the liquid substances are discharged from the sewage outlet 130, and the extraction suction cup 150 extracts the solid substances through the extraction pump 151 for different purposes.

[0054] After the fermented feces are separated from the solid and liquid, the solid matter remaining on the top of the lifting plate 210 is often spread out at various positions on the lifting plate 210, which makes it difficult to collect the solid matter. Therefore, the structure of the lifting plate 210 is improved.

[0055] like Figure 6 and Figure 7As shown, the specific structure of the driving mechanism 300 is disclosed below. The driving mechanism 300 includes a motor 310 arranged on the top of the mounting top seat 120. The output shaft of the motor 310 is downward along the axis of the septic tank 110. A reciprocating screw rod 320 is provided at the bottom of the motor 310. The output shaft of the motor 310 is coaxially connected to the reciprocating screw rod 320. The bottom of the reciprocating screw rod 320 is rotatably connected to the top of the mounting base 131. A screw rod nut seat is provided at the center of the copying plate 210, and the screw rod nut seat is threadedly connected to the reciprocating screw rod 320.

[0056] The improvement lies in that the feed port 140 and the extraction suction cup 150 are respectively located at two ends far away from each other on the cross-sectional diameter of the septic tank 110 .

[0057] Moreover, the height of the top of the lifting plate 210 gradually decreases along the direction from the feed inlet 140 to the extraction suction cup 150 .

[0058] Furthermore, in the present invention, polytetrafluoroethylene can be selected as the material of the lifting plate 210, because polytetrafluoroethylene has an extremely low friction coefficient, usually between 0.04-0.15, which makes it easy for feces and other substances to slide on its surface. It has stable chemical properties and strong corrosion resistance, and can maintain good performance in a complex chemical environment such as a septic tank 110 (containing various organic acids, alkalis and other components).

[0059] It should be noted that after the fermentation of feces in the septic tank 110 is completed, the power supply of the motor 310 is turned on, and the motor 310 drives the reciprocating screw 320 coaxially connected to its own output shaft to rotate. The reciprocating screw 320 drives the lifting plate 210 that was originally close to the mounting base 131 to move upward, and the solid matter in the feces in the septic tank 110 is salvaged from the liquid. During the rising process of the lifting plate 210, since the longitudinal section of the lifting plate 210 presents an inclined surface, the solid matter on the top of the lifting plate 210 gradually slides to the bottom of the extraction suction cup 150 under the action of its own gravity and gathers around (the solid matter at this time still contains more water, and the friction coefficient is low, and it is easy to slide on the top of the inclined lifting plate 210). When the solid matter is close to the blocking mechanism 400, the extraction suction cup 150 extracts the solid matter on the top of the lifting plate 210 from the storage chamber 160 through the extraction pump 151.

[0060] The feces of livestock contain more cellulose because they eat grass, which makes the feces fluffy and highly absorbent. After the shovel board 210 salvages the feces at the bottom of the septic tank 110 to a higher place, the salvaged feces still contain a lot of water, so a blocking mechanism 400 is set on the rising path of the shovel board 210 to squeeze out the absorbed water.

[0061] Figure 8The positional relationship between the blocking mechanism 400 and the lifting plate 210 is shown, and then the specific structure of the blocking mechanism 400 is disclosed. The blocking mechanism 400 includes a baffle 410 fixedly connected to the inner wall of the septic tank 110, the bottom of the feed port 140 and the extraction suction cup 150 both penetrate the baffle 410, and the outer walls of the feed port 140 and the extraction suction cup 150 are closely attached to the perforations of the baffle 410;

[0062] It should be disclosed that, in the process of the reciprocating screw 320 driving the lifting plate 210 to slide upward, the solid matter on the top of the lifting plate 210 will gradually gather around the bottom of the extraction suction cup 150. As the distance between the lifting plate 210 and the baffle 410 becomes smaller, most of the water adsorbed in the solid matter can be squeezed out, thereby reducing the ammonium nitrogen and other fast-acting nutrients contained in the solid matter extracted by the extraction suction cup 150.

[0063] Embodiment 2: This embodiment is based on the content provided in Embodiment 1, and aims to provide a method for harmless treatment of livestock manure, and the specific steps are as follows:

[0064] S1. Injecting livestock manure into the septic tank 110 through the feed port 140. In the manure entering the septic tank 110, solid matter is initially intercepted by the filter mechanism 200 and stays in the storage chamber 160, while liquid matter passes through the filter mechanism 200 and falls into the sewage chamber 170, and then the liquid matter is discharged from the septic tank 110 through the sewage outlet 130;

[0065] S2. When the feces in the septic tank 110 are fermented, the power supply of the motor 310 is turned on, and the motor 310 drives the reciprocating screw 320 coaxially connected to its own output shaft to rotate, and the reciprocating screw 320 drives the lifting plate 210 originally close to the mounting base 131 to move upward, so as to salvage the solid matter in the feces in the septic tank 110 from the liquid;

[0066] S3, during the ascending process of the copy board 210, since the longitudinal section of the copy board 210 is an inclined surface, the solid matter on the top of the copy board 210 gradually slides to the lower part of the extraction suction cup 150 and gathers under the action of its own gravity (the solid matter at this time still contains a lot of water, the friction coefficient is low, and it is easy to slide on the top of the inclined copy board 210). When the solid matter is close to the blocking mechanism 400, the extraction suction cup 150 extracts the solid matter on the top of the copy board 210 from the storage chamber 160 through the extraction pump 151;

[0067] S4. During the process of solid-liquid separation of feces and salvaging solid matter by the lifting plate 210, the material storage chamber 160 and the sewage chamber 170 are always kept sealed from the outside of the septic tank 110 by the barrier of the baffle 410 to prevent the volatile gas in the septic tank 110 from escaping to the outside.

[0068] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A harmless treatment device for livestock manure, comprising a treatment mechanism (100), wherein the treatment mechanism (100) at least comprises a septic tank (110), wherein a mounting top seat (120) is provided on the top of the septic tank (110), a sewage outlet (130) is provided on the bottom of the septic tank (110), and a feed inlet (140) and an extraction suction cup (150) are respectively connected to the upper part of the septic tank (110), wherein: The septic tank (110) is provided with a filtering mechanism (200) and a blocking mechanism (400) in order from bottom to top. A driving mechanism (300) is provided at the center of the septic tank (110). The top of the filtering mechanism (200), the bottom of the blocking mechanism (400) and the inner wall of the septic tank (110) form a material storage chamber (160). The bottom of the filtering mechanism (200) and the inner wall of the septic tank (110) form a sewage chamber (170). The filtering mechanism (200) is slidably connected to the inner wall of the septic tank (110), and the blocking mechanism (400) is fixedly connected to the inner wall of the septic tank (110). The filtering mechanism (200) is used to separate the solid and liquid of the livestock excrement put into the septic tank (110), and the driving mechanism (300) drives the filtering mechanism (200) to rise and fall in the septic tank (110) to salvage the solid matter in the excrement; When the driving mechanism (300) drives the filtering mechanism (200) to gradually rise, the filtering mechanism (200) and the blocking mechanism (400) approaching each other can squeeze out the moisture adsorbed in the solid feces, and the blocking mechanism (400) can block the volatile gas in the septic tank (110).

2. The harmless treatment equipment for livestock manure according to claim 1 is characterized in that: The inner bottom wall of the septic tank (110) is fixedly connected to a mounting base (131) at the top of the sewage outlet (130), the bottom of the mounting base (131) is connected to the sewage outlet (130), and the end of the extraction suction cup (150) away from the interior of the septic tank (110) is connected to an extraction pump (151).

3. The harmless treatment equipment for livestock manure according to claim 2 is characterized in that: The filtering mechanism (200) comprises a lifting plate (210) arranged above the mounting base (131), the outer wall of the lifting plate (210) being in close contact with the inner wall of the septic tank (110), and a plurality of filter holes (220) being provided on the lifting plate (210).

4. The harmless treatment equipment for livestock manure according to claim 3 is characterized in that: The driving mechanism (300) includes a motor (310) disposed on the top of the mounting top seat (120), the output shaft of the motor (310) is downwardly directed along the axis of the septic tank (110), a reciprocating screw (320) is disposed at the bottom of the motor (310), the output shaft of the motor (310) is coaxially connected to the reciprocating screw (320), the bottom of the reciprocating screw (320) is rotatably connected to the top of the mounting base (131), a screw nut seat is disposed at the center of the lifting plate (210), and the screw nut seat is threadedly connected to the reciprocating screw (320).

5. The harmless treatment equipment for livestock manure according to claim 1 is characterized in that: The feed port (140) and the extraction suction cup (150) are respectively located at two ends of the cross-sectional diameter of the septic tank (110) that are far away from each other.

6. The harmless treatment equipment for livestock manure according to claim 3 is characterized by: The height of the top of the lifting plate (210) gradually decreases along the direction from the feed inlet (140) to the extraction suction cup (150).

7. The harmless treatment equipment for livestock manure according to claim 1 is characterized by: The blocking mechanism (400) includes a baffle (410) fixedly connected to the inner wall of the septic tank (110), the bottoms of the feed port (140) and the extraction suction cup (150) both pass through the baffle (410), and the outer walls of the feed port (140) and the extraction suction cup (150) are tightly attached to the perforations of the baffle (410).

8. The harmless treatment equipment for livestock manure according to claim 3 is characterized by: The material of the copy plate (210) is polytetrafluoroethylene.

9. A method using the livestock manure harmless treatment equipment according to any one of claims 2 to 8, characterized in that: The steps include: S1. Injecting livestock manure into the septic tank (110) through the feed inlet (140); solid matter in the manure entering the septic tank (110) is initially intercepted by the filter mechanism (200) and remains in the storage chamber (160); liquid matter passes through the filter mechanism (200) and falls into the sewage chamber (170); and then the liquid matter is discharged from the septic tank (110) through the sewage outlet (130); S2, turning on the power supply of the driving mechanism (300), so that it drives the filtering mechanism (200) to rise along the inner wall of the septic tank (110) and approach the blocking mechanism (400); S3, when the filtering mechanism (200) gradually approaches the blocking mechanism (400), the solid matter located on the top of the filtering mechanism (200) gradually slides toward the side close to the extraction suction cup (150), and the filtering mechanism (200) and the blocking mechanism (400) approaching each other squeeze out the liquid adsorbed in the solid matter, and the extraction pump (151) extracts the squeezed solid matter from the storage chamber (160) through the extraction suction cup (150); S4. During the process of the filtering mechanism (200) performing solid-liquid separation of feces and salvaging solid matter, the material storage chamber (160) and the sewage chamber (170) are always kept sealed from the outside of the septic tank (110) to prevent volatile gases in the septic tank (110) from escaping to the outside.

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