A new glass fiber reinforced plastic septic tank with in-situ degradation, harmless and zero emission

Abstract

The utility model provides a kind of harmless, zero emission of in-situ degradation new glass steel septic tank, it is divided into three grid pools inside, adjacent pool is communicated by water pipe, first grid pool is provided with inclined folding plate with grating hole, sewage lifting pump, and sewage lifting pump is arranged in the lower layer of pool separated by inclined folding plate with grating hole;The bottom of third grid pool is provided with one-way communication pipe with flap, one-way communication pipe other end directly penetrates second grid pool and extends into first grid pool, ensure that liquid can only flow from third grid pool into first grid pool.Sewage lifting pump pumping irrigation, due to the negative pressure suction effect of pump mouth, flap opens, liquid in third grid pool backflows to first grid pool, becomes organic fertilizer water after fully mixing, and is discharged to surrounding greening or farmland through pipeline.The utility model can degrade and digest excrement sewage, harmless treatment is used in surrounding greening irrigation in-situ, realize zero emission, and need not to be cleaned regularly by sucking excrement car.

Description

Technical Field

[0001] This utility model belongs to the field of fecal sewage degradation and digestion technology, and in particular relates to a new type of fiberglass septic tank that achieves on-site degradation, harmlessness, and zero discharge. Background Technology

[0002] During urban construction, wastewater from buildings or residential areas is collected through sewage pipes and discharged into outdoor sewage inspection wells. After being collected through outdoor sewage pipes, it is then discharged into septic tanks for treatment. In the septic tanks, the wastewater undergoes 12-24 hours of sedimentation, removing 50%-60% of suspended solids before being discharged into the municipal sewage system. The settled sludge undergoes anaerobic fermentation and decomposition for more than 3 months, breaking down the organic matter in the sludge into stable inorganic matter. The easily perishable raw sludge is transformed into stable digested sludge, changing its structure and reducing its water content. Finally, the sludge is periodically removed by vacuum trucks and transported for landfill or use as fertilizer. Sufficient fermentation of septic tank sludge is crucial to kill insect eggs, E. coli, and other pathogens, rendering the sludge harmless. Applying unfermented sludge directly to the soil presents two main problems: first, the excrement ferments and degrades in the soil, a high-temperature respiration process that can easily burn plant seedlings; second, the lack of fermentation easily leads to the spread of plant pathogens. Research revealed that current property management practices rely on septic tank trucks for regular cleaning and removal. These trucks emit foul odors, significantly impacting road traffic and commercial areas. Sometimes, untimely disposal or heavy rain during the rainy season leads to sewage overflow, causing severe social problems. Furthermore, septic tanks are excellent sources of organic fertilizer, and not utilizing them is a waste, contradicting current low-carbon initiatives and outdated practices.

[0003] Therefore, this utility model designs a new type of fiberglass septic tank that achieves on-site degradation and harmlessness with zero emissions. It not only solves the problem of on-site harmless treatment of septic tanks, but also eliminates the need for vacuum trucks for cleaning. It makes full use of energy, and the harmless fecal sludge is fully utilized as organic fertilizer. It avoids the inconvenience caused to residents' lives when the septic tank is working, and realizes the full utilization of harmless organic fertilizer in normal times, achieving zero emissions. It does not require vacuum trucks to work and transport it off-site regularly, and will not affect business operations. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a new type of fiberglass septic tank that can be degraded and rendered harmless on-site with zero emissions. It realizes the harmless treatment of septic tanks on-site and does not require a vacuum truck for cleaning. It makes full use of energy and avoids the inconvenience to residents' lives caused by the operation of the vacuum tank.

[0005] This utility model achieves the above-mentioned technical objectives through the following technical means.

[0006] A new type of fiberglass septic tank that degrades on-site, is harmless, and has zero emissions. The fiberglass septic tank is divided into three water tanks. The first water tank is connected to the sewage source through an inlet pipe. The first water tank is connected to the second water tank, and the second water tank is connected to the third water tank through water pipes. The third water tank is equipped with an outlet pipe. The first water tank is equipped with a perforated sloping plate and a sewage lift pump. The sewage lift pump is located in the lower layer of the water tank separated by the perforated sloping plate. The water outlet pipe of the sewage lift pump extends out of the first water tank for irrigation. The perforated sloping plate is used to prevent turbulence from damaging the static sludge in the upper layer when the sewage lift pump is pumping water for irrigation. The bottom of the third water tank is equipped with a one-way connecting pipe with a flap gate. One end of the one-way connecting pipe is located inside the third water tank, and the other end passes directly through the second water tank and extends into the first water tank. Wastewater enters the first, second, and third water tanks sequentially through the inlet and outlet pipes. The sludge in the first water tank is degraded by sedimentation through the inclined baffle plate with grid holes.

[0007] Furthermore, the length ratio of the three internal water tanks of the fiberglass septic tank is L1:L2:L3=2:1:3, where L1, L2, and L3 represent the first water tank, the second water tank, and the third water tank, respectively.

[0008] Furthermore, the unidirectional connecting pipe is fixedly supported by a pipe bracket.

[0009] Furthermore, an inspection port is provided above the first water tank, and a protective cover is provided on the inspection port.

[0010] Furthermore, a vent pipe is installed above the first water tank. The vent pipe is made with a hole drilled on site and connected with an additional connector. The other end of the vent pipe extends to the ground and is fitted with a vent pipe cover.

[0011] Furthermore, when the sewage lift pump is pumping water for irrigation, the flap gate opens under the negative pressure suction of the pump inlet, and the liquid in the third water tank flows back to the first water tank. The settled fecal water and the fermented and degraded sludge in the first water tank form turbulence at the inlet of the sewage lift pump. After the feces and water are fully mixed, they become organic fertilizer water and are discharged to the surrounding green areas or farmland through the pipe.

[0012] This utility model has the following beneficial effects: Irrigation after high-temperature fermentation and other pollution-free treatments reduces the spread of pathogens and achieves on-site, harmless utilization of excrement. It eliminates the need for periodic removal from septic tanks, minimizing the impact of septic tank operations on residents' lives. It reduces the treatment load on urban sewage treatment plants, making it particularly suitable for areas without municipal pipelines, promoting recycling, energy conservation, and emission reduction. This invention achieves both on-site, harmless treatment of septic tanks and eliminates the need for septic tank cleaning trucks. It fully utilizes energy, using harmless excrement and sludge as organic fertilizer, while avoiding the inconvenience caused to residents by septic tank operations. It achieves full utilization of harmless organic fertilizer during normal operations, resulting in zero emissions and no disruption to business operations due to the absence of periodic septic tank removal. Attached Figure Description

[0013] Figure 1 This is a plan view of the septic tank described in this utility model; Figure 2 for Figure 1 Schematic diagram of the cross section along the AA direction; Figure 3 for Figure 1 Schematic diagram of the cross section along the BB direction; In the diagram: 1. Inlet pipe, 2. Outlet pipe, 3. Vent pipe, 4. Vent pipe cover, 5. Pump outlet pipe, 6. Sewage lift pump, 7. Flap valve, 8. Inspection port, 9. One-way connecting pipe, 10. Water passage pipe, 11. Slanted folding plate with grid holes, 12. Pipe support. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0015] like Figure 1 , 2 As shown, the novel fiberglass septic tank of this utility model, which is characterized by on-site degradation, harmlessness, and zero emissions, is made entirely of fiberglass. It is internally divided into three compartments with a length ratio of L1:L2:L3 = 2:1:3. The first compartment is connected to a sewage source via an inlet pipe 1 to receive sewage. The first and second compartments, as well as the second and third compartments, are connected via water pipes 10. An outlet pipe 2 is installed on the third compartment.

[0016] like Figure 1 , 2As shown in Figure 3, the first water tank is equipped with a perforated inclined plate 11 and a sewage lift pump 6. The sewage lift pump 6 is located in the lower layer of the water tank separated by the perforated inclined plate 11. The water outlet pipe 5 of the sewage lift pump 6 extends outside the first water tank. The sewage that has undergone pollution-free treatment such as high-temperature fermentation is used for irrigation, realizing the on-site treatment and harmless utilization of feces. The perforated inclined plate 11 can be used to prevent the turbulence of the sewage lift pump 6 from damaging the static sludge in the upper layer when pumping water for irrigation.

[0017] like Figure 2 As shown, a one-way connecting pipe 9 with a flap gate 7 is installed at the bottom of the third water tank. One end of the one-way connecting pipe 9 is located in the third water tank, and the other end passes directly through the second water tank and extends into the first water tank. The one-way connecting pipe 9 with the flap gate 7 can ensure that the liquid can only flow from the third water tank into the first water tank and cannot flow in the opposite direction. The one-way connecting pipe 9 is fixed and supported by the pipe bracket 12.

[0018] Normally, sewage enters the first, second, and third water tanks sequentially through the inlet pipe 1 and the outlet pipe 10. The sludge in the first water tank is settled and degraded by the inclined baffle plate 11 with grid holes.

[0019] When the control cabinet controls the sewage lift pump 6 to pump water for irrigation, the negative pressure suction at the pump inlet causes the flap gate 7 to open, allowing the clearer liquid in the third water tank to flow back to the first water tank. The settled fecal water and the fermented sludge from the first water tank create turbulence at the inlet of the sewage lift pump 6, ensuring thorough mixing of the feces and water to create organic fertilizer. This fertilizer is then discharged through pipes to surrounding green areas or farmland. Because the sewage lift pump 6 is equipped with a perforated baffle plate 11, when the level sensor and other measuring devices in the first water tank detect a drop in the liquid level to height h3, they send a signal to the control cabinet. The control cabinet then stops the sewage lift pump 6, ensuring no disturbance to the fresh fecal sludge on the upper layer of the first water tank. This guarantees that the outflowing organic fertilizer has undergone thorough fermentation and degradation, rendering it harmless. The above control principles and processes utilize existing technologies commonly used in various fields. The drop in the liquid level to height h3 refers to the liquid level falling to the bottom of the perforated baffle plate 11.

[0020] like Figure 1 , 2 As shown in Figure 3, an inspection port 8 is also provided above the first water tank, and a protective cover is provided on the inspection port 8; a vent pipe 3 is also provided above the first water tank (the vent pipe 3 is made on-site in the well shaft and connected by an additional connector), and the other end of the vent pipe 3 extends to the ground and is equipped with a vent pipe cover 4.

[0021] The embodiments described above are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essential content of the present invention shall fall within the protection scope of the present invention.

Claims

1. A novel fiberglass septic tank characterized by on-site degradation, harmlessness, and zero emissions, wherein... The fiberglass septic tank is divided into three water tanks. The first water tank is connected to the sewage source through the inlet pipe (1). The first water tank is connected to the second water tank, and the second water tank is connected to the third water tank through the water pipe (10). The third water tank is equipped with an outlet pipe (2). The first water tank is equipped with a sloping plate (11) with grid holes and a sewage lift pump (6). The sewage lift pump (6) is located in the lower layer of the water tank separated by the sloping plate (11) with grid holes. The water outlet pipe (5) of the sewage lift pump (6) extends out of the first water tank for irrigation. The sloping plate (11) with grid holes is used to prevent turbulence from damaging the static sludge in the upper layer when the sewage lift pump (6) pumps water for irrigation. The bottom of the third water tank is equipped with a one-way connecting pipe (9) with a flap gate (7). One end of the one-way connecting pipe (9) is located in the third water tank, and the other end passes directly through the second water tank and extends into the first water tank. Wastewater enters the first, second, and third water tanks sequentially through the inlet pipe (1) and the outlet pipe (10). The sludge in the tanks is degraded by sedimentation through the inclined plate (11) with grid holes in the first water tank.

2. The novel fiberglass septic tank with on-site degradation, harmlessness, and zero emissions according to claim 1, characterized in that, The length ratio of the three internal water tanks of the fiberglass septic tank is L1:L2:L3=2:1:3, where L1, L2, and L3 represent the first water tank, the second water tank, and the third water tank, respectively.

3. The novel fiberglass septic tank with on-site degradation, harmlessness, and zero emissions according to claim 1, characterized in that, The one-way connecting pipe (9) is fixedly supported by the pipe support (12).

4. The novel fiberglass septic tank with on-site degradation, harmlessness, and zero emissions according to claim 1, characterized in that, An inspection port (8) is also provided above the first water tank, and a protective cover is provided on the inspection port (8).

5. The novel fiberglass septic tank with on-site degradation, harmlessness, and zero emissions according to claim 1, characterized in that, A ventilation pipe (3) is also installed above the first water tank. The ventilation pipe (3) is made with a hole on site and connected with an additional connector. The other end of the ventilation pipe (3) extends to the ground and is covered with a ventilation pipe cover (4).

6. The novel fiberglass septic tank with on-site degradation, harmlessness, and zero emissions according to claim 1, characterized in that, When the sewage lift pump (6) pumps water for irrigation, the flap gate (7) opens under the negative pressure suction of the pump inlet, and the liquid in the third water tank flows back to the first water tank. The settled fecal water and the fermented and degraded sludge in the first water tank form turbulence at the inlet of the sewage lift pump (6). After the feces and water are fully mixed, they become organic fertilizer water and are discharged to the surrounding greening or farmland through the pipeline.

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