Septic tank
The septic tank design with a filtration chamber, vertical partitions, and aerobic ventilation addresses the inefficiencies of existing systems by enhancing solid-liquid separation and preventing clogging, ensuring reliable and efficient wastewater treatment.
Patent Information
- Authority / Receiving Office
- RU · RU
- Patent Type
- Patents
- Current Assignee / Owner
- OBSHCHESTVO S OGRANICHENNOJ OTVETSTVENNOSTYU SPETSMONTAZH
- Filing Date
- 2025-11-13
- Publication Date
- 2026-06-29
AI Technical Summary
Existing septic tanks suffer from low efficiency in settling suspended wastewater due to lack of pressure dampening and flow redirection, leading to accelerated clogging and anaerobic conditions that damage seals and reduce treatment performance, while also failing to convert wastewater into usable water.
A septic tank design with a lower discharge chamber and upper filtration chamber separated by a ceiling, featuring a wastewater treatment filter, vertical partitions for solid separation, ultraviolet disinfection, and a tee on the inlet pipe to reduce turbulence, along with a waste pipe and discharge chamber ventilation to stabilize pressure and promote aerobic conditions.
Enhances the separation of solid and liquid fractions, stabilizes settling processes, prevents clogging, and ensures reliable operation by maintaining aerobic conditions, thereby improving the efficiency and longevity of the septic tank.
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Abstract
Description
[0001] The invention relates to devices for draining wastewater or storm water and treatment facilities.
[0002] A COMPACT PLANT FOR WASTEWATER TREATMENT is known from the prior art [RU 2182133 (C2), published 10.05.2002], comprising in two isolated and coaxially located tanks a two-tier settling tank with a sedimentation trough, a bioreactor with a submerged load and an aeration device, a secondary settling tank, a highly porous filter, characterized in that a two-tier settling tank is located in the inner tank, the sedimentation annular trough of which is located in the center of the tank, and a bioreactor with a submerged load and a secondary settling tank with a highly porous filter are located in the outer tank.
[0003] Also known is a HOUSEHOLD DEVICE FOR DAILY AUTOMATIC COLLECTION AND RINSING OF WATER [CN 205875289 (U), published 11.01.2017], comprising a collection box, characterized in that it also includes a sedimentation chamber, a filter chamber, a wastewater collection pipe and a fine filter, a disinfection device, an inclined plate, an overflow, a water outlet, a collection chamber, working elements, a rack, a valve plate, a fixing socket, a waste collection basket, a drain, a side cover and a coarse filter mesh; in the interior of the collection box, in order from left to right, a sedimentation chamber, a filter chamber and a collection chamber are arranged; The lower left side of the filter chamber is connected with the sedimentation chamber, and the upper right side of the filter chamber is connected with the collection chamber, the outlet of the wastewater collection pipe is connected with the upper left side of the sedimentation chamber; the fine filter is mounted at the top of the filter chamber;The coarse filter mesh is located on the lower side of the fine filter, the coarse filter is mounted in the lower part of the filter chamber; the disinfection device is connected to the inner part of the collection chamber; the inclined plate is located on the lower side of the disinfection device, on the left side the inclined plate is mounted to the collection chamber; the upper right side of the collection chamber is provided with an overflow hole, a water outlet is provided in the lower right corner of the collection chamber; the fixing socket is rigidly connected to the bottom of the collection box, and the valve plate is movably connected to the upper side of the fixing socket; the left side of the valve plate is movably connected to the lower side of the inner part of the sedimentation chamber, and the right lower side of the valve plate is rigidly connected to the rack; the rack and the working element are connected by a gear; the working element is movably connected to the right side of the fixing socket;The waste collection basket is located on the lower side of the valve plate and is movably connected to the lower side of the sedimentation chamber; a drain is provided at the bottom of the sedimentation chamber; a side cover is located on the left side of the waste collection basket and is connected to the lower left side of the sedimentation chamber.
[0004] The closest in technical essence is SEPTIC TANK [RU 2792735 C1, publ. 23.03.2023], comprising a vertical discharge well and a main well with an inlet pipe located on the ceiling on the discharge well, the main well is closed at the top with a cover, characterized in that a drain hole from the main well to the discharge well is made in the cover that closes the hatch at the bottom of the main well, wherein the hatch is made at the maximum distance from the inlet pipe along the direction of movement of wastewater in the main well, an opening is made in the hatch cover for mounting a coarse filter to it with the possibility of communicating through the said filter of the main well with the discharge well and ensuring the filtration of waste and sewage water before discharging them into the discharge well, wherein the coarse filter comprises a housing plugged at the bottom, a perforated bypass pipe mounted in the housing, communicating the main well with the discharge well through an opening in the upper part of the filter housing,an opening at the bottom of the filter housing and an opening in the hatch cover, a filter material is mounted on the surface of the bypass pipe over the perforation with the ability to pass into a discharge well of water filtered from impurities by means of the filter material, wherein the bypass pipe in the opening at the bottom of the filter housing is mounted detachably with the ability to remove it from the said opening and replace the filter material, inside the filter housing between its side wall and the filter material in the second opening at the bottom of the filter housing an indicator valve is mounted, made in the form of a perforated pipe plugged at the bottom, inside which a rod made of a material with positive buoyancy is located, which, as the internal volume of the filter housing is filled with water due to contamination of the filter material, rises upward and visually signals the degree of filling of the internal volume of the filter housing,in this case, the indicator valve is mounted in a detachable manner in the hole at the bottom of the filter housing with the possibility of removing it from the said hole and draining water from the volume of the filter housing into the main well.
[0005] The main technical problems of analogues and the prototype are:
[0006] – low efficiency of settling suspended wastewater in the filtration chamber before its treatment due to the lack of solutions that allow for dampening the pressure of wastewater entering the septic tank and redirecting its flows, which contributes to the transfer of solid fractions into the filter and its accelerated clogging;
[0007] – low reliability and anaerobic properties due to the lack of direct communication between the discharge chamber and the street, which leads to the accumulation of aggressive gases and excess pressure that can damage the chamber’s seal, cause unpleasant odors, and also reduce the performance of bacteria that promote wastewater treatment;
[0008] – the inability to convert wastewater into water suitable for other purposes.
[0009] The objective of the invention is to eliminate the shortcomings of the prototype.
[0010] The technical result of the invention consists in increasing the operational properties of the septic tank and the efficiency of separating the solid and liquid fractions of wastewater in the septic tank (improving the degree of settling).
[0011] The specified technical result is achieved due to the fact that the septic tank contains a lower discharge chamber and an upper filtration chamber separated by a ceiling, a housing filter for wastewater treatment mounted in the filtration chamber, communicating with the filtration chamber and the discharge chamber, an upper cover, access hatches into the chambers, a head on the cover above the filter, characterized in that it contains a waste pipe mounted from above through the cover and the filtration chamber down into the discharge chamber, wherein the upper end of the waste pipe is located above the zero level, the discharge chamber is made open at the bottom, under which an underground filtration field is equipped.
[0012] In particular, the internal volume of the filtration chamber is divided by at least one vertical partition into intermediate chambers that communicate with each other by overflow openings made in the said vertical partitions.
[0013] In particular, vertical plates are mounted at the bottom of the filtration chamber across the flow of wastewater to create settling tanks for heavy suspended solids at the bottom of the filtration chamber.
[0014] In particular, in the upper part of the filtration chamber, at the level reached by the wastewater, vertical plates are mounted across the flow of wastewater to retain light suspended solids.
[0015] In particular, inspection holes are made in the septic tank lid.
[0016] In particular, a tee is mounted on the inlet pipe inside the filtration chamber so that one of its branches is oriented upwards above the upper edge of the inlet pipe, and the other downwards, below the lower edge of the overflow hole in the filter housing, through which the internal volume of the filter housing communicates with the filtration chamber.
[0017] In particular, a source of disinfecting ultraviolet radiation is mounted inside the filter housing.
[0018] In particular, the filter material is made of carbon filter materials.
[0019] The specified technical result is achieved due to the fact that the septic tank contains a lower discharge chamber and an upper filtration chamber separated by a ceiling, a housing filter for wastewater treatment mounted in the filtration chamber, communicating the filtration chamber and the discharge chamber, an upper cover, access hatches to the chambers, a head on the cover above the filter, characterized in that it contains a waste pipe mounted from above through the cover and the filtration chamber down into the discharge chamber, wherein the upper end of the waste pipe is located above the zero level, the discharge chamber is made waterproof, forming a storage tank for collecting filtered wastewater, a submersible drainage pump for pumping is located inside the discharge chamber.
[0020] In particular, the internal volume of the filtration chamber is divided by at least one vertical partition into intermediate chambers that communicate with each other by overflow openings made in the said vertical partitions.
[0021] In particular, vertical plates are mounted at the bottom of the filtration chamber across the flow of wastewater to create settling tanks for heavy suspended solids at the bottom of the filtration chamber.
[0022] In particular, in the upper part of the filtration chamber, at the level reached by the wastewater, vertical plates are mounted across the flow of wastewater to retain light suspended solids.
[0023] In particular, inspection holes are made in the septic tank lid.
[0024] In particular, a tee is mounted on the inlet pipe inside the filtration chamber so that one of its branches is oriented upwards above the upper edge of the inlet pipe, and the other downwards, below the lower edge of the overflow hole in the filter housing, through which the internal volume of the filter housing communicates with the filtration chamber.
[0025] In particular, a source of disinfecting ultraviolet radiation is mounted inside the filter housing.
[0026] In particular, the filter material is made of carbon filter materials.
[0027] Brief description of drawings
[0028] Figure 1 shows a variant of the implementation of a septic tank with a filtration field under the discharge chamber and a filter located in the filtration chamber.
[0029] Figure 2 shows a variant of the implementation of a septic tank with a filtration field under the discharge chamber and a filter located behind the partition.
[0030] Figure 3 shows an embodiment of a septic tank with a waterproof discharge chamber.
[0031] The following are indicated on the figures: 1 – filtration chamber, 2 – discharge chamber, 3 – overlap, 4 – cover, 5 – partition, 6 – inlet pipe, 7 – hatch, 8 – filter housing, 9 – branch pipe, 10 – bypass pipe, 11 – filter material, 12 – overflow pipe, 13 – head, 14 – indicator valve, 15 – float, 16 – waste pipe, 17 – tee, 18 – pump.
[0032] Implementation of the invention
[0033] The septic tank contains a first chamber – filtration chamber 1 and a second chamber – discharge chamber 2, located under filtration chamber 1, wherein filtration chamber 1 and discharge chamber 2 are separated from each other by a ceiling 3 (see Fig. 1-3).
[0034] The aforementioned chambers 1, 2 are formed within predominantly plastic, concrete, or composite housings, formed at least by side walls. Said housings may be annular (cylindrical) or rectangular-prism (parallelepiped) in shape, cast in one piece or consisting of component parts connected to one another, for example, by tongue-and-groove joints.
[0035] The filtration chamber 1 is closed at the top by a cover 4, also made of concrete, plastic or composite.
[0036] In one embodiment, the volume of the filtration chamber 1 can be divided by at least one vertical partition 5 (see Fig. 2) into two or more parts, depending on the number of purification stages, intermediate chambers that are connected by overflow openings formed in the said vertical partitions 5 in their upper part, at the same or different levels. The overflow openings can be equipped with overflow pipes.
[0037] In the filtration chamber 1, in the side wall in the upper part, at an angle downwards, an inlet pipe 6 is mounted, through which wastewater enters the said chamber 1.
[0038] Vertical plates may be mounted at the bottom of filtration chamber 1, transverse to the flow of wastewater from inlet pipe 6, to create settling basins for heavy suspended solids contained in the wastewater. Additionally, vertical plates may also be mounted at the top, at the level reached by the wastewater in filtration chamber 1, transverse to the flow of wastewater, to retain light suspended solids contained in the wastewater. Said upper plates may be made of a material with positive buoyancy and freely positioned within filtration chamber 1 so as to always remain on the surface of the wastewater in filtration chamber 1.
[0039] At the maximum distance along the wastewater flow from the inlet pipe 6 in the filtration chamber 1 under the hatch 7 in the cover 4, a wastewater purification filter is mounted.
[0040] Hatch 7 in cover 4, under which a wastewater purification filter is mounted, simultaneously provides access to said filter and to filtration chamber 1, and in the embodiment of the septic tank, when the wastewater purification filter is mounted in a separate chamber, an additional hatch 7 is mounted in cover 4 of the septic tank above the main volume of filtration chamber 1 for access to filtration chamber 1.
[0041] The wastewater treatment filter connects the filtration chamber 1 with the discharge chamber 2 with the ability to filter wastewater and sewage before discharging it into the discharge chamber 1.
[0042] The wastewater filter is designed as a housing and comprises a housing 8 formed by side walls and a bottom, and in some embodiments, a removable lid. A pipe 9 is mounted to an opening in the bottom of the filter housing 8, to which a perforated overflow pipe 10 is mounted inside the filter housing 8 along its entire length. The perforation in the overflow pipe 10 is located at some distance from the bottom of the filter housing 8, allowing for the formation of a settling basin in the lower portion of the filter housing 8.
[0043] A filter material 11 is mounted around the bypass pipe 8, covering the perforations. It allows wastewater to pass through it from the filter housing 8 into the bypass pipe 10 and undergo mechanical purification. Furthermore, the filter material 11 can act as a bio-loading medium for bacteria and protozoa that purify the wastewater, promoting their intensive reproduction.
[0044] The internal volume of the filter housing 8 is connected to the filtration well 1 through an overflow hole made in the upper part of the filter housing 8 below the level of the inlet pipe 6. An overflow pipe 12 is mounted in the overflow hole in the filter housing 8, which is made predominantly L-shaped, the vertical part of which is located outside the filter with the inlet hole downwards, ensuring that wastewater enters the filter not from the surface, but from the thickness, due to the fact that the inlet hole is located below the level of wastewater.
[0045] The wastewater purification filter is mounted to the cover 4 or to the side wall of the filtration chamber 1 by any known means.
[0046] Overflow pipe 10 is led out upward from the septic tank through hatch 7, located above the wastewater treatment filter.
[0047] In one embodiment, a head 13 is mounted on the cover 4 above the hatch 7. The upper end of the bypass pipe 10 can be located either inside the head 13 or extend out of it.
[0048] Inside the filter housing 8, along the bypass pipe 10, an indicator valve 14 is mounted. This valve is a perforated pipe communicating with the internal volume of the filter housing 8, within which a float 15 is freely located. The float 15 is made in the form of a rod made of a material with positive buoyancy. The upper end of the pipe of the indicator valve 14 is led out through a hatch 7 next to the bypass pipe 10 and upward. The said end of the pipe of the indicator valve 14 can be located either inside the head 13 or extending outward from it.
[0049] Float 15 is made of such a length that when the internal volume of filter housing 8 is not filled with wastewater, it is completely located inside its pipe, and when the level of wastewater inside filter housing 8 reaches the overflow hole through which the filter communicates with filtration chamber 1, the float protrudes upward from its pipe above head 13 and thus visualizes the degree of filling of the internal volume of filter housing 8 when filter material 11 is clogged.
[0050] In the ceiling of the filtration chamber 1, a hatch 7 is mounted, designed to provide access to the discharge chamber 2.
[0051] The septic tank is additionally equipped with a waste pipe 16, mounted from above through cover 4 and filtration chamber 1 down into discharge chamber 2. The lower end of waste pipe 16 is located slightly below ceiling 3, and the upper end of waste pipe 16 is located at least 0.5 m above ground level, preferably 0.7-0.8 m. Ground level, when organizing a sewer system in a house, is the level from which all elevations and slopes of sewer pipes are measured. In sewer construction and design, "ground level" usually corresponds to the floor level of the first residential floor or the general ground level around the house, which is taken as the base mark of 0.000.
[0052] This level is used to calculate the pipe installation depth, gravity sewer pipe slopes, and other elevation parameters. The zero level is important for ensuring the correct pipe slope, allowing wastewater to flow freely and without stagnation through the sewer system under the force of gravity.
[0053] In one embodiment, the waste pipe 16 passes into the discharge chamber 2 through an opening made in the hatch 7 of the cover 4 closing the discharge chamber 2.
[0054] Inspection openings (hatches) (not shown in the figures) can be additionally made in the lid 4 of the septic tank with the possibility of inserting hoses for pumping out the septic tank through the mentioned openings into the filtration chamber 1.
[0055] A tee 17 is mounted at the outlet of the inlet pipe 6 inside the filtration chamber 1 in such a way that one of its branches is oriented upward, above the upper edge of the inlet pipe 6, and the other is oriented downward, below the lower edge of the inlet pipe 6 and the overflow hole in the filter body 8, which helps to reduce the stirring up of sediment due to a decrease in turbulence when discharging wastewater into the septic tank, which in turn allows the sediment at the bottom of the filtration chamber 1 to remain motionless and not rise in the form of suspended particles.
[0056] The septic tank is installed in a trench dug in the ground. The perimeter of the septic tank is filled with soil.
[0057] In one embodiment, the discharge chamber 2 is made open at the bottom (without a bottom) under which a filtration field is equipped in the trench in the form of a cushion of at least two layers: a lower layer of coarse-grained drainage and an upper layer of fine-grained drainage (see Fig. 1, 2).
[0058] In another embodiment, the discharge chamber 2 is made waterproof, with a bottom, forming a storage tank for collecting filtered wastewater (see Fig. 3). In the embodiment of the discharge chamber 2 for collecting filtered wastewater, a separate tank (not shown in the figures) can be mounted inside the said chamber 2, communicating with the filter and access to it through the hatch 7 in the ceiling 3. Inside the discharge chamber 2, when collecting filtered wastewater in it, a submersible drainage pump 18 is located, configured to pump filtered wastewater from the discharge chamber 2 to the outside of the septic tank for their use for technical needs, for example, for irrigation in arid areas or discharging them into an external filtration field.
[0059] In one embodiment, a source of ultraviolet radiation for disinfecting wastewater (not shown in the figures) is mounted inside the filter housing 8 outside the filter material 11 and the bypass pipe 10, made in a sealed design and emitting radiation with a wavelength of 205-315 nm.
[0060] The filter material 11 can be made on the basis of carbon fiber (carbon filter materials).
[0061] The septic tank works as follows.
[0062] Wastewater or sewage enters filtration chamber 1 through inlet pipe 6, where, as it flows through said chamber 1 toward the wastewater treatment filter, it is separated from heavy and light suspended solids of various fractions. The heaviest components, large pieces, remain at the bottom of the main well, while light suspended waste floats to the top. Vertical plates on the bottom, if present, create a barrier to retain these heavy suspended solids at the bottom, while vertical plates on the surface of the wastewater create a barrier to collect light suspended solids at the surface.
[0063] Water purification in the filtration chamber 1 before it enters the filter is additionally carried out by microbiological decomposition of organic inclusions without access to oxygen, during which the waste that has sunk to the bottom of the said chamber 1 undergoes a stage of acid fermentation, as a result of which it disintegrates into a thick mass, carbon dioxide and water.
[0064] When the wastewater reaches the level of the overflow hole in the filter housing 8, it enters the said housing 8 through the overflow pipe 12, first into the sump, and then, reaching the perforated part of the overflow pipe 10, it passes through the filter material 11 and enters the overflow pipe 10, and from there into the discharge chamber 2. At the same time, through the holes in the pipe of the indicator valve 14, the wastewater enters the indicator valve 10 and causes the float 15 to rise.
[0065] Filter material 11, as wastewater passes through it, retains mechanical impurities and simultaneously creates a bioburden for the proliferation of protozoa and bacteria, which contribute to water purification. In discharge chamber 2, the water, first passing through a fine-grain drainage system and then through a coarse-grain drainage system, is discharged into the ground. Water, purified from impurities in the coarse filter, freely flows through the drainage system into the ground without clogging it, thereby extending the service life of the septic tank.
[0066] The outlet pipe 17 can be additionally connected to the filtration field located on the side of the septic tank through an opening in the side wall of the main well 3. The said outlet pipe 17 is provided with a plug.
[0067] As the filter material 11 becomes dirty, the float 15 with the water level in the filter rises above the upper end of the indicator valve pipe 14 and visually signals the degree of filling of the wastewater treatment filter and the contamination of the filter material 11. Alternatively, marks can be applied to the float 15 to more accurately determine the degree of filling of the wastewater treatment filter.
[0068] To replace the filter material 11 if it becomes contaminated, it is not necessary to pump out wastewater from the entire filtration chamber 1. To replace the filter material 11, plug the overflow pipe 12 in the upper part of the filter housing 8 and pump out water only from the interior of the filter housing 8. Then, remove the bypass pipe 10 together with the filter material 11, replace the filter material 11, and install the bypass pipe 10 with new filter material 11 into the filter housing 8. It should be noted that pumping out wastewater from the interior of the filter housing 8 may not be necessary, since when removing the bypass pipe 10 from the opening at the bottom of the filter housing 8, the wastewater leaves the wastewater through the said opening.
[0069] Furthermore, another embodiment of the filter is possible, in which the pipe of the indicator valve 14 is made plugged at the bottom and mounted in a second opening made on the bottom of the filter housing 8, which is connected by a pipe 9 to the filtration chamber 1 or the chamber where the filter is located. In this embodiment, an emergency drain of wastewater from the filter housing 8 can be performed without removing the bypass pipe 10, but by removing the indicator valve 14 from the opening on the bottom of the filter housing 8. This embodiment is relevant in the absence of lifting devices for removing the bypass pipe 10 with the filter material 11, which are necessary due to the large mass of the filter material, which was acquired due to the hygroscopicity (water absorption capacity) of the filter material 11 and the accumulation of water in it.
[0070] If there is a vertical partition 5 separating the chamber with the filter from the filtration chamber 1, provided that the float 15 responds in a timely manner, the chamber with the filter remains dry, which makes the septic tank convenient for maintenance.
[0071] Access to discharge well 2 for cleaning is provided through hatch 7 in ceiling 3 after preliminary pumping of wastewater from filtration chamber 1, which eliminates the need to install a new septic tank and affects the increase in the service life of the septic tank and the sewerage and wastewater treatment system as a whole.
[0072] In the embodiment of discharge chamber 2, either waterproof or with a storage tank inside, the filtered wastewater is collected and reused. Pump 18 is used to pump this wastewater out of discharge chamber 2 or the storage tank and supply it for reuse. This embodiment is preferred when groundwater levels are high or when installing a septic tank in clay soils. Furthermore, this embodiment can be used to discharge wastewater into an additional filtration field.
[0073] Vent pipe 16 provides ventilation for the septic tank by removing exhaust gases from discharge chamber 2 and stabilizing the pressure with an influx of oxygen from outside. This condition is important when equipping a septic tank, as air passes through vent pipe 16 into discharge chamber 2, providing oxygen for aerobic bacteria, and gases generated during the vital processes of these bacteria are discharged to the outside. A minimum height of 0.5 m above ground level ensures a difference in air pressure between discharge chamber 2 and the outside air, creating an air flow that is drawn into discharge chamber 2 and equalizes the pressure.
[0074] Although the technical solution has been described in detail based on embodiments that are currently considered the most practical and preferred, it should be understood that such details serve only the stated purpose, and the invention is not limited to the disclosed embodiments, but rather encompasses equivalent embodiments that do not depart from the scope of the claims. For example, it should be understood that the invention contemplates that, to the extent possible, one or more features of any embodiment can be combined with one or more features of any other embodiment.
[0075] The technical result of the invention is to improve the operational properties of the septic tank and the efficiency of separating solid and liquid fractions of wastewater in the septic tank (improving the degree of settling).
[0076] The operational properties of a product are understood as a set of characteristics that determine the ability of the product to perform specified functions under certain operating conditions for a specified time.
[0077] For a septic tank, such properties (characteristics) include the tightness of the structure and stability at a high groundwater level, hydraulic performance (throughput), the efficiency of separating solid and liquid fractions, reliability and durability, ease of maintenance, environmental safety, the ability to install on different types of soil and in autonomous use conditions.
[0078] The technical result of the invention is achieved due to:
[0079] – installation of tee 17 on inlet pipe 6, which ensures dispersion and damping of the kinetic energy of the incoming flow, prevents sediment from being stirred up, reduces the amount of suspended particles in the internal volume and reduces the risk of clogging, thereby improving the operational properties of the septic tank by increasing the service life and simplifying maintenance;
[0080] – connection of the waste pipe 16, which stabilizes the settling processes by providing constant ventilation, which ensures the removal of gases formed during the decomposition of organic matter, preventing excess pressure in the discharge chamber 2, and also creates the conditions necessary for the vital activity of bacteria due to the influx of fresh air and the removal of volatile decomposition products, which ultimately increases the efficiency of wastewater treatment and the quality of the separation process of solid and liquid fractions, prevents the breakdown of the water seal, leads to stable operation, the absence of odors and to improved performance properties in the long term;
[0081] – making the discharge chamber 2 waterproof, which maintains stable optimal conditions for sedimentation and prevents additional erosion of sediment, prevents groundwater and rainwater from entering the chamber and ensures environmental safety;
[0082] – the use of a wastewater treatment filter, which provides a high degree of purification due to the effective separation of solid and liquid fractions.
Claims
1. A septic tank comprising a lower discharge chamber and an upper filtration chamber separated by a cover, a housing filter for wastewater treatment mounted in the filtration chamber, communicating with the filtration chamber and the discharge chamber, an upper cover, access hatches into the chambers, a head on the cover above the filter, characterized in that it comprises a waste pipe mounted from above through the cover and the filtration chamber down into the discharge chamber, wherein the upper end of the waste pipe is located above the zero level, the discharge chamber is made open at the bottom, under which an underground filtration field is equipped.
2. A septic tank according to paragraph 1, characterized in that the internal volume of the filtration chamber is divided by at least one vertical partition into intermediate chambers that communicate with each other by overflow openings made in the said vertical partitions.
3. A septic tank according to paragraph 1, characterized in that vertical plates are mounted at the bottom of the filtration chamber across the direction of movement of wastewater to create settling tanks for heavy suspended solids at the bottom of the filtration chamber.
4. A septic tank according to paragraph 1, characterized in that in the upper part of the filtration chamber, at the level reached by the wastewater, vertical plates are mounted across the flow of the wastewater to retain light suspended solids.
5. A septic tank according to paragraph 1, characterized in that inspection holes are made in the lid of the septic tank.
6. A septic tank according to claim 1, characterized in that a tee is mounted on the inlet pipe inside the filtration chamber, so that one of its branches is oriented upwards above the upper edge of the inlet pipe, and the other downwards, below the lower edge of the overflow opening in the filter housing, through which the internal volume of the filter housing communicates with the filtration chamber.
7. A septic tank according to paragraph 1, characterized in that a source of disinfecting ultraviolet radiation is mounted inside the filter housing.
8. A septic tank according to item 1, characterized in that the filter material is made of carbon filter materials.
9. A septic tank comprising a lower discharge chamber and an upper filtration chamber separated by a cover, a housing filter for wastewater treatment mounted in the filtration chamber, communicating with the filtration chamber and the discharge chamber, an upper cover, access hatches into the chambers, a head on the cover above the filter, characterized in that it contains a waste pipe mounted from above through the cover and the filtration chamber down into the discharge chamber, wherein the upper end of the waste pipe is located above the zero level, the discharge chamber is made waterproof, forming a storage tank for collecting filtered wastewater, a submersible drainage pump for pumping is located inside the discharge chamber.
10. A septic tank according to paragraph 9, characterized in that the internal volume of the filtration chamber is divided by at least one vertical partition into intermediate chambers that communicate with each other by overflow openings made in the said vertical partitions.
11. A septic tank according to item 9, characterized in that vertical plates are mounted at the bottom of the filtration chamber across the direction of movement of wastewater to create settling tanks for heavy suspended solids at the bottom of the filtration chamber.
12. A septic tank according to item 9, characterized in that in the upper part of the filtration chamber, at the level reached by the wastewater, vertical plates are mounted across the flow of the wastewater to retain light suspended solids.
13. A septic tank according to paragraph 9, characterized in that inspection holes are made in the lid of the septic tank.
14. A septic tank according to item 9, characterized in that a tee is mounted on the inlet pipe inside the filtration chamber, so that one of its branches is oriented upwards above the upper edge of the inlet pipe, and the other downwards, below the lower edge of the overflow hole in the filter housing, through which the internal volume of the filter housing communicates with the filtration chamber.
15. A septic tank according to paragraph 9, characterized in that a source of disinfecting ultraviolet radiation is mounted inside the filter housing.
16. A septic tank according to item 9, characterized in that the filter material is made of carbon filter materials.