Anti-clogging sulfur-containing sewage filtering tank

Abstract

The utility model discloses a kind of anti-clogging type sulphur-containing sewage filtering tank, it is related to sulphur sewage treatment technical field, including sulfide treatment tank, still include primary filter tank, treatment pond and secondary filter tank, between the liquid inlet of sulfide treatment tank and primary filter tank, between the liquid outlet of sulfide treatment tank and treatment pond, between secondary filter tank and primary filter tank, between the liquid inlet of secondary filter tank and sulfide treatment tank all are interconnected by connecting pipe, second filter screen of double-layer structure is provided in secondary filter tank.The anti-clogging type sulphur-containing sewage filtering tank disclosed in the utility model has by setting sulfide treatment tank, sulfide treatment tank is prior art, performs demulsification treatment to sulphur-containing sewage, forms flocculate, primary filter tank carries out preliminary filtration to other solid sundries in sulphur-containing sewage, preliminary filtered sewage flows into sulfide treatment tank and is treated, treatment pond carries out sedimentation treatment effect to the sewage of forming flocculate.

Description

Technical Field

[0001] This utility model relates to the field of sulfur wastewater treatment technology, and in particular to an anti-clogging sulfur-containing wastewater filter tank. Background Technology

[0002] Publication number CN110104704B, entitled "A Method and Apparatus for Treating Oily Wastewater Containing Sulfur," discloses a method and apparatus for treating oily wastewater containing sulfur by injecting a certain proportion of sulfur-containing wastewater into the oily wastewater for mixing and demulsification, followed by sedimentation in a settling tank to achieve three-phase separation of oil, water, and sludge. The treated oily wastewater has a water content of <5% and a mechanical impurity content of <2%. This invention significantly reduces the cost of treating oily wastewater containing sulfur, greatly alleviates the difficulty of subsequent wastewater treatment, saves production costs, and improves the demulsification effect, opening up new avenues for the direct and effective utilization of sulfur-containing wastewater. The apparatus features advanced control methods, independent units, and a rational process. It can be connected via pipelines to various oily wastewater treatment applications, including oily wastewater, aged oily wastewater, and heavy oily wastewater, with simple connection methods and flexible application.

[0003] The aforementioned disclosure can conveniently separate oil, sulfur, and water. However, in actual use, sulfur-containing wastewater often contains other impurities. These impurities enter the filter tank with the water flow. Some of the impurities in the filter tank will precipitate and accumulate, and cannot be effectively removed. This will cause the filter tank to become clogged after a certain period of time, affecting the treatment effect of sulfur-containing wastewater. Utility Model Content

[0004] This utility model discloses an anti-clogging sulfur-containing wastewater filter tank, which aims to solve the technical problem that in actual use, sulfur-containing wastewater often contains other impurities. These impurities enter the filter tank with the water flow, and some of them settle and accumulate inside the filter tank, which cannot be effectively removed, thus causing the filter tank to become clogged after a certain period of time, affecting the treatment effect of sulfur-containing wastewater.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A clog-resistant sulfur-containing wastewater filtration tank includes a sulfide treatment tank, a primary filtration tank, a treatment pool, and a secondary filtration tank. The inlet of the sulfide treatment tank is connected to the primary filtration tank, the outlet of the sulfide treatment tank is connected to the treatment pool, the secondary filtration tank is connected to the primary filtration tank, and the inlet of the secondary filtration tank is connected to the sulfide treatment tank via connecting pipes. The secondary filtration tank is equipped with a double-layered second filter screen. The treatment pool and the secondary filtration tank are connected via a flushing pipe.

[0007] In a preferred embodiment, a sewage pipe is fixedly connected to the top of the primary filter tank, a first filter screen is fixedly installed inside the primary filter tank, and a connecting pipe installed between the inlet of the sulfide treatment tank and the primary filter tank is located below the first filter screen.

[0008] By installing a sewage pipe, sulfur-containing wastewater flows into the primary filtration tank. The wastewater entering the primary filtration tank is filtered by the first filter screen and then flows into the sulfide treatment tank.

[0009] In a preferred embodiment, the two ends of the connecting pipe between the secondary filter tank and the primary filter tank are located below the second filter screen and above the first filter screen of the double-layer structure, respectively.

[0010] By setting up a flushing pipe, when the flushing pipe drains water from the primary filter tank, it can backwash the first filter screen, causing the solid impurities that have been filtered out and accumulated above the first filter screen to flow into the space between the double-layered second filter screen, which then filters the solid impurities again.

[0011] In a preferred embodiment, the connecting pipe between the secondary filter tank and the sulfide treatment tank is located above the second filter screen of the double-layer structure.

[0012] In a preferred embodiment, the treatment tank is divided into an independent sedimentation tank, a detection tank, and a pre-discharge tank by a partition. The connecting pipe between the drain outlet of the sulfide treatment tank and the treatment tank is connected to the sedimentation tank. The two ends of the flushing pipe between the treatment tank and the secondary filter tank are respectively connected to the detection tank and the bottom of the double-layer structured second filter screen.

[0013] By setting up a sedimentation tank, flocculent matter in the wastewater settles in the sedimentation tank. The settled wastewater flows into the testing tank. After passing the test in the testing tank, the wastewater flows into the pre-discharge tank for discharge. The two ends of the flushing pipe between the treatment tank and the secondary filter tank are connected to the testing tank and the bottom of the double-layer second filter screen, respectively. The water used for backwashing solid debris above the first filter screen is supplied through the testing tank. The flushing pipe is located below the second filter screen. The incoming flushing water is divided in the secondary filter screen. Part of the water flows into the primary filter tank to backwash the first filter screen, and the other part of the water directly washes the solid debris in the second filter screen. The flushed water flows into the sulfide treatment tank for further sulfide treatment.

[0014] In a preferred embodiment, a water pump is fixedly installed inside the detection chamber, the output end of the water pump is connected to the flushing pipe, a detection probe is also fixedly installed inside the detection chamber, and a shut-off valve is fixedly installed around the flushing pipe and each connecting pipe.

[0015] A water pump is installed to power the flow of water from the testing chamber into the secondary filter tank. The detection probe is existing technology and is used to detect the sulfur content of the treated water. The shut-off valve is existing technology and is used to close and open the connecting pipe and the flushing pipe.

[0016] As can be seen from the above, the anti-clogging sulfur-containing wastewater filter tank provided by this utility model has the following technical effects.

[0017] Firstly, by setting up a sulfide treatment tank (an existing technology), sulfur-containing wastewater is demulsified to form flocculent material. A primary filter tank performs preliminary filtration of other solid impurities in the sulfur-containing wastewater. The wastewater after preliminary filtration flows into the sulfide treatment tank for further treatment, and the treatment pond performs sedimentation treatment on the wastewater that has formed flocculent material.

[0018] Secondly, the secondary filter tank receives solid debris accumulated in the primary filter tank. The debris entering the secondary filter tank is stored between the second filter screens of the double-layer structure. The flushing pipe can flush the solid debris in the primary filter tank to the second filter screens of the double-layer structure after water is supplied. Under the subsequent flushing, the sulfides adhering to the surface of the solid debris are washed into the sulfide treatment tank for treatment. This can prevent the solid debris from being mixed with sulfides when cleaning solid debris in the future. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an anti-clogging sulfur-containing wastewater filter tank proposed in this utility model.

[0020] Figure 2 This is an exploded view of the overall structure of an anti-clogging sulfur-containing wastewater filter tank proposed in this utility model.

[0021] Figure 3 This is a cross-sectional schematic diagram of the primary filter tank structure of an anti-clogging sulfur-containing wastewater filter tank proposed in this utility model.

[0022] Figure 4 This is a cross-sectional schematic diagram of the secondary filter tank structure of an anti-clogging sulfur-containing wastewater filter tank proposed in this utility model.

[0023] In the attached diagram: 1. Sulfide treatment tank; 11. Feed inlet; 2. Primary filter tank; 21. Wastewater pipe; 22. First filter screen; 3. Treatment pool; 31. Sedimentation chamber; 32. Detection chamber; 33. Pre-discharge chamber; 4. Secondary filter tank; 41. Second filter screen; 5. Connecting pipe; 6. Flushing pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Reference Figures 1-4 A clog-resistant sulfur-containing wastewater filtration tank includes a sulfide treatment tank 1, a primary filtration tank 2, a treatment pool 3, and a secondary filtration tank 4. The inlet of the sulfide treatment tank 1 is connected to the primary filtration tank 2, the outlet of the sulfide treatment tank 1 is connected to the treatment pool 3, the secondary filtration tank 4 is connected to the primary filtration tank 2, and the secondary filtration tank 4 is connected to the inlet of the sulfide treatment tank 1 via connecting pipes 5. The secondary filtration tank 4 is equipped with a second filter screen 41 with a double-layer structure. The treatment pool 3 and the secondary filtration tank 4 are connected via a flushing pipe 6.

[0027] In this embodiment, a sulfide treatment tank 1 (a prior art technology) is provided to demulsify sulfur-containing wastewater, forming flocculent material. A primary filter tank 2 performs preliminary filtration of other solid impurities in the sulfur-containing wastewater. The pre-filtered wastewater flows into the sulfide treatment tank 1 for further treatment. A treatment pool 3 performs sedimentation treatment on the wastewater that has formed flocculent material. A secondary filter tank 4 receives the solid impurities accumulated in the primary filter tank 2. The impurities entering the secondary filter tank 4 are stored between the double-layered second filter screens 41. The flushing pipe 6 allows the solid impurities in the primary filter tank 2 to be flushed between the double-layered second filter screens 41 after water is supplied. In subsequent flushing, the sulfides adhering to the surface of the solid impurities are flushed into the sulfide treatment tank 1 for further treatment. This prevents the solid impurities from being mixed with sulfides during subsequent cleaning. The top of the sulfide treatment tank 1 has an inlet 11 for adding demulsifying material.

[0028] In a preferred embodiment, a sewage pipe 21 is fixedly connected to the top of the primary filter tank 2, a first filter screen 22 is fixedly installed inside the primary filter tank 2, and a connecting pipe 5 installed between the liquid inlet of the sulfide treatment tank 1 and the primary filter tank 2 is located below the first filter screen 22.

[0029] In this embodiment, by setting up a sewage pipe 21, sulfur-containing sewage flows into the primary filter tank 2 through the sewage pipe 21. The sewage entering the primary filter tank 2 flows into the sulfide treatment tank 1 after being filtered by the first filter screen 22.

[0030] In a preferred embodiment, the two ends of the connecting pipe 5 between the secondary filter tank 4 and the primary filter tank 2 are respectively located below the second filter screen 41 of the double-layer structure and above the first filter screen 22.

[0031] In this embodiment, by providing a flushing pipe 6, when the flushing pipe 6 drains water from the primary filter tank 2, it can reverse-flush the first filter screen 22, causing the solid impurities accumulated above the first filter screen 22 to flow into the space between the double-layered second filter screen 41, where the double-layered second filter screen 41 filters the solid impurities again.

[0032] In a preferred embodiment, the connecting pipe 5 between the secondary filter tank 4 and the sulfide treatment tank 1 is located above the second filter screen 41 of the double-layer structure.

[0033] In this embodiment, by setting the connecting pipe 5 between the secondary filter tank 4 and the sulfide treatment tank 1 above the second filter screen 41 of the double-layer structure, when water flows through the connecting pipe 5, some water will flow directly through the second filter screen 41 and into the sulfide treatment tank 1, thereby washing the solid impurities in the second filter screen 41 and preventing sulfur-containing substances from adhering to the surface of the solid impurities, which would affect the subsequent cleaning of the solid impurities.

[0034] In a preferred embodiment, the treatment tank 3 is divided into an independent sedimentation tank 31, a detection tank 32, and a pre-discharge tank 33 by a partition. The connecting pipe 5 between the drain outlet of the sulfide treatment tank 1 and the treatment tank 3 is connected to the sedimentation tank 31. The two ends of the flushing pipe 6 between the treatment tank 3 and the secondary filter tank 4 are respectively connected to the detection tank 32 and the bottom of the double-layer second filter screen 41.

[0035] In this embodiment, by setting up a sedimentation tank 31, the flocculent matter in the sewage settles in the sedimentation tank 31. The settled sewage flows into the detection tank 32. After passing the test in the detection tank 32, it flows into the pre-discharge tank 33 for discharge. The two ends of the flushing pipe 6 between the treatment tank 3 and the secondary filter tank 4 are respectively connected to the detection tank 32 and the lower part of the double-layer structure second filter screen 41. The water used for backwashing the solid debris above the first filter screen 22 is supplied through the detection tank 32. The flushing pipe 6 is located below the second filter screen 41. The incoming flushing water will be divided in the secondary filter screen. Part of the water flows into the primary filter tank 2 to backwash the first filter screen 22, and the other part of the water directly washes the solid debris in the second filter screen 41. The flushed water flows into the sulfide treatment tank 1 for further sulfide treatment.

[0036] In a preferred embodiment, a water pump is fixedly installed inside the detection chamber 32, and the output end of the water pump is connected to the flushing pipe 6. A detection probe is also fixedly installed inside the detection chamber 32, and a shut-off valve is fixedly installed on the periphery of the flushing pipe 6 and each connecting pipe 5.

[0037] In this embodiment, a water pump is installed to provide power for the water in the detection chamber 32 to flow into the secondary filter tank 4. The detection probe is existing technology and is used to detect the sulfur content of the treated water. The shut-off valve is existing technology and is used to close and open the connecting pipe 5 and the flushing pipe 6.

[0038] Working principle: When in use, sulfur-containing wastewater flows into the primary filter tank 2 through the wastewater pipe 21. The secondary filter tank 4 filters the solid impurities mixed in the wastewater. The filtered wastewater flows into the sulfide treatment tank 1 for demulsification treatment. The wastewater after demulsification treatment flows into the sedimentation tank 31 for sedimentation. The sedimented water flows into the testing tank 32 for testing. After passing the test, it flows into the pre-discharge tank 33 for discharge.

[0039] When there is too much solid debris on the first filter screen 22 or the water in the detection chamber 32 fails to meet the standard, the water pump is started. The water pump discharges the water in the detection chamber 32 into the secondary filter tank 4 through the flushing pipe 6. The water entering the secondary filter tank 4 is divided. Part of the water flows into the secondary filter tank 4 and backwashes the first filter screen 22, causing the solid debris accumulated on it to flow into the space between the double-layer second filter screen 41 in the secondary filter tank 4. The other part of the water flows directly through the second filter screen 41 and into the sulfide treatment tank 1. When the water passes through the second filter screen 41, it washes away the solid debris between the second filter screens 41 and removes the sulfides attached to the surface.

[0040] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

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