Sulfur autotrophic backwashing device and system for sewage treatment

Abstract

The utility model discloses a sulfur autotrophic backwashing device and system for sewage treatment, which comprises a sulfur autotrophic box, the lower end of the sulfur autotrophic box is provided with an equipment water outlet / backwashing water inlet, the upper end of the sulfur autotrophic box is provided with a backwashing water outlet and an equipment water inlet, the backwashing water outlet is used for being connected with a backwashing water pipe, and the equipment water inlet is used for being connected with a backwashing water outlet. The equipment water inlet is used for being connected with a water inlet pipe, the equipment water outlet / backwashing water inlet, the backwashing water outlet and the equipment water inlet are all provided with on-off valves, the sulfur autotrophic tank is internally provided with a supporting layer, a sulfur autotrophic denitrification filter material layer and backwashing aeration holes, the supporting layer is provided with a plurality of water passing holes, and the backwashing aeration holes are communicated with the supporting layer. The sulfur autotrophic denitrification filter material layer is arranged on the supporting layer, the backwashing aeration hole is connected with a backwashing aeration pipe, the backwashing aeration pipe is positioned below the supporting layer, the backwashing aeration pipe extends out of the sulfur autotrophic tank, and an on-off valve is arranged on the extension section of the backwashing aeration pipe. The utility model has the advantages of simple structure and low cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment processing field, concretely relates to a sewage treatment sulfur autotrophic backwashing device and system. BACKGROUND

[0002] The previous sewage treatment process mainly adopts heterotrophic denitrification biological nitrogen removal, but the denitrifying bacteria are mostly heterotrophic and facultative anaerobic bacteria, and the conversion of nitrate nitrogen into nitrogen gas needs to consume carbon source and also needs to consume alkalinity, which affects the pH in water.

[0003] Now adopting sulfur autotrophic denitrification mode does not need to add carbon source, only needs to observe the effluent condition and the amount of filler, and can be backwashed regularly. The sulfur autotrophic denitrification mode avoids the penetration phenomenon caused by excessive addition of traditional carbon source, completely eliminates the problem of high COD of effluent oxygen demand, and the filter material consumption cost is less than the carbon source addition cost, thereby reducing the operation cost. Since the sewage treated by sulfur autotrophic denitrification will reduce the treatment efficiency after being used for a period of time, thereby causing the water quality to be poor, the sulfur autotrophic denitrification filler needs to be backwashed regularly. However, the existing backwashing mode is complicated to operate, and an additional backwashing device needs to be added, thereby increasing the cost. SUMMARY

[0004] The utility model aims at the shortage of prior art, provides a kind of sewage treatment sulfur autotrophic backwashing device and system, simple structure, need not additional backwashing equipment, reduce cost.

[0005] One of the purposes of the utility model is to adopt the technical scheme that

[0006] A kind of sewage treatment sulfur autotrophic backwashing device, including sulfur autotrophic tank, equipment effluent / backwash inlet is equipped in the lower end of the sulfur autotrophic tank, backwash outlet and equipment inlet are equipped in the upper end of the sulfur autotrophic tank, the backwash outlet is used to be connected with backwash water pipe, the equipment inlet is used to be connected with inlet pipe, the equipment effluent / backwash inlet, backwash outlet and equipment inlet are equipped with on-off valve, supporting layer, sulfur autotrophic denitrification filter material layer and backwash aeration hole are equipped in the sulfur autotrophic tank, a plurality of water holes are equipped on the supporting layer, the sulfur autotrophic denitrification filter material layer is arranged on the supporting layer, backwash aeration pipe is connected to the backwash aeration hole, the backwash aeration pipe is located below the supporting layer, the backwash aeration pipe extends out of the sulfur autotrophic tank, and the extension section of the backwash aeration pipe is equipped with on-off valve.

[0007] Further, it further includes water collecting tank, the equipment inlet and backwash outlet are connected in the water collecting tank, and the water collecting tank is triangular weir water collecting tank.

[0008] Further, the lower end of the sulfur autotrophic tank is further provided with emptying pipe, and on-off valve is provided on the emptying pipe.

[0009] Further, the extension end of the backwash aeration pipe is connected with a fan or an air compressor.

[0010] Further, the backwash aeration pipe is arranged transversely, and a plurality of air holes are formed in the side wall of the backwash aeration pipe.

[0011] Further, the sulfur autotrophic backwashing filter material layer adopts elemental sulfur and boron mud, magnesium, calcium, iron minerals.

[0012] The second purpose of the utility model discloses the technical scheme:

[0013] A sewage treatment sulfur autotrophic backwashing system, including filter treatment pool, water collecting tank, still include above-mentioned sewage treatment sulfur autotrophic backwashing device, the filter treatment pool is connected with the equipment water inlet of sewage treatment sulfur autotrophic backwashing device through inlet pipe, the equipment outlet water / backwash water inlet of sewage treatment sulfur autotrophic backwashing device is connected with water collecting tank through drain pipe, is equipped with backwash pump on the drain pipe, and the backwash water outlet of sewage treatment sulfur autotrophic backwashing device is connected with the filter treatment pool through backwash water pipe.

[0014] Further, the emptying pipe of the sewage treatment sulfur autotrophic backwashing device is connected with the backwash water pipe.

[0015] Further, a on-off valve is arranged between the water collecting tank and the backwash pump.

[0016] Further, a controller is further included, each on-off valve is an electromagnetic valve, the controller is electrically connected with the on-off valve and backwash pump respectively, and is used for controlling the on-off of each on-off valve and the start and stop of backwash pump.

[0017] The above technical scheme has the following beneficial effects:

[0018] The utility model discloses simple structure reaches the following effect: the present equipment utilizes sulfur autotrophic tank, through setting backwash water outlet and equipment water inlet on the upper end of sulfur autotrophic tank, setting equipment outlet water / backwash water inlet at the lower end, utilizes the equipment outlet water / backwash water inlet of sulfur autotrophic tank lower end setting backwash water, and the backwash water outlet arranged at the upper end is arranged, and the backwash water is discharged, thereby realizing backwash, and the backwash equipment need not be added, and the simple transformation is low in cost.

[0019] The action of the on-off valve and the backwash pump is controlled by the controller respectively, so that automatic control is realized, manual operation is reduced, and intelligent control is realized.

[0020] The elemental sulfur and boron mud, magnesium, calcium, iron and other mineral components have high treatment load, and the filter material replacement ensures that the daily treatment water volume of the filter tank does not change. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of a specific embodiment 1;

[0022] Figure 2 is a working principle schematic diagram of a sulfur autotrophic backwashing system of a specific embodiment 2.

[0023] In the drawings, 1 is a device effluent / backwash inlet, 2 is a backwashing aeration pipe, 3 is a supporting layer, 4 is a sulfur autotrophic denitrification filter layer, 5 is a water collecting tank, 6 is a device inlet, 7 is a backwashing outlet, 8 is a emptying pipe, 9 is a water collecting tank, 10 is a backwashing pump, 11 is a drain pipe. DETAILED DESCRIPTION Specific embodiment 1:

[0025] Referring to Figure 1 As shown in the drawings, a sulfur autotrophic backwashing device for sewage treatment comprises a sulfur autotrophic tank, in the specific embodiment: the sulfur autotrophic tank is a cylindrical shape. The lower end of the sulfur autotrophic tank is provided with a device effluent / backwash inlet 1, which is connected with a drain pipe and a backwashing water pipe through a tee joint. The upper end of the sulfur autotrophic tank is provided with a water collecting tank 5, a backwashing outlet 7 and a device inlet 6. The device inlet and the backwashing outlet are both connected in the water collecting tank, and the backwashing outlet is larger than the device inlet. The backwashing water quantity will be larger than the normal water inlet quantity to flush the substances on the filler, and the drain outlet is correspondingly increased. The backwashing outlet is connected with a backwashing water pipe, and the device inlet is connected with a water inlet pipe. The water collecting tank is a triangular weir water collecting tank, which can slow down the water inlet speed and block some impurities in the water. The device effluent / backwash inlet, the backwashing outlet and the device inlet are all provided with on-off valves. The sulfur autotrophic tank is provided with a supporting layer 3, a sulfur autotrophic denitrification filter layer 4 and a backwashing aeration hole. A plurality of water passing holes are arranged on the supporting layer. The sulfur autotrophic denitrification filter layer is arranged on the supporting layer and is made of elemental sulfur and boron mud, magnesium, calcium, iron and other minerals. The sulfur autotrophic denitrification filter layer 4 can also use existing sulfur autotrophic denitrification filter material. The backwashing aeration hole is connected with a backwashing aeration pipe 2. The backwashing aeration pipe is located below the supporting layer and extends out of the sulfur autotrophic tank. The backwashing aeration pipe is arranged transversely, and a plurality of air holes are arranged on the side wall of the backwashing aeration pipe. The extension section of the backwashing aeration pipe is provided with an on-off valve. The extension end of the backwashing aeration pipe is connected with a fan or an air compressor, and air is delivered through the fan or the air compressor.

[0026] Possibly, the lower end of the sulfur autotrophic tank is also provided with an emptying pipe 8, and the emptying pipe 8 is provided with an on-off valve. The backwashing water at the lower end of the sulfur autotrophic tank can be discharged through the emptying pipe.

[0027] Working principle of the utility model:

[0028] The utility model discloses a sulfur autotrophy integrated equipment upper end is equipped with backwash water outlet and equipment water inlet, and the lower end is provided with equipment water outlet / backwash water inlet, under normal circumstances, the on-off valve of backwash water outlet is closed, and the on-off valve of equipment water inlet is opened, and the water is entered through equipment water inlet and is discharged through the equipment water outlet / backwash water inlet of lower end after sulfur autotrophy. Specific embodiment 2:

[0030] Referring to Figure 2 As shown in the figure, a sewage treatment sulfur autotrophic backwashing system, including filter treatment pool, water collecting tank 9, adopt the sewage treatment sulfur autotrophic backwashing device described in specific embodiment 1, the filter treatment pool is connected with the equipment water inlet of the sewage treatment sulfur autotrophic backwashing device through the water inlet pipe, the equipment water outlet / backwash water inlet of the sewage treatment sulfur autotrophic backwashing device is connected with the tee, is connected with drain pipe and backwash water pipe through tee respectively, the drain pipe and the backwash water pipe are connected with the water collecting tank respectively, the backwash pump 10 is arranged on the backwash water pipe, the water inlet pipe of drain pipe is provided with on-off valve, and the water collecting tank is provided with on-off valve between the backwash pump. The backwash water outlet of the sewage treatment sulfur autotrophic backwashing device is connected with the filter treatment pool through the backwash water pipe. Utilize the sewage treatment sulfur autotrophic backwashing device to directly backflush sulfur autotrophic denitrification filter material layer, and the filtered sewage is sent to the filter treatment pool through the backwash water pipe and is filtered again, utilizes the mode of cyclic treatment, ensures the water quality after being treated by the sewage treatment sulfur autotrophic backwashing system, and the cost is reduced without additional other equipment.

[0031] The emptying pipe of the sewage treatment sulfur autotrophic backwashing device is connected with the backwash water pipe, and the pipeline is directly connected on the backwash water pipe.

[0032] Still include controller, each on-off valve is solenoid valve, the controller is electrically connected with water quality on-line monitoring equipment, each on-off valve and backwash pump respectively, is used for automatically controlling the on-off of each on-off valve and the start and stop of backwash pump according to the water quality of water quality on-line monitoring equipment, when reaching the set condition, automatically starting backwashing, thereby reducing the frequency of backwashing. Other features are same with specific embodiment 1, so this specific embodiment is omitted here.

Claims

1. A device for the autotrophic backwashing of sewage treatment plants, characterized in that it comprises: The sulfur autotrophic tank is provided with a device outlet water / backwash inlet water port at a lower end, a backwash outlet water port and a device inlet water port at an upper end, the backwash outlet water port is connected with a backwash water pipe, the device inlet water port is connected with an inlet water pipe, the device outlet water / backwash inlet water port, the backwash outlet water port and the device inlet water port are all provided with on-off valves, the sulfur autotrophic tank is internally provided with a supporting layer, a sulfur autotrophic denitrification filter material layer and a backwash aeration hole, the supporting layer is provided with a plurality of water passing holes, the sulfur autotrophic denitrification filter material layer is arranged on the supporting layer, the backwash aeration hole is connected with a backwash aeration pipe, the backwash aeration pipe is located below the supporting layer, the backwash aeration pipe extends out of the sulfur autotrophic tank, and an extension section of the backwash aeration pipe is provided with an on-off valve.

2. The device for self-sustaining backwashing of sewage treatment according to claim 1, characterized in that: The device inlet water port and the backwash outlet water port are both connected in a water collecting tank, and the water collecting tank is a triangular weir water collecting tank.

3. The device for self-sustaining backwashing of sewage treatment according to claim 1, characterized in that: The lower end of the sulfur autotrophic tank is further provided with a emptying pipe, and the emptying pipe is provided with an on-off valve.

4. The device for self-sustained reverse washing of sewage treatment according to claim 1, characterized in that: An extension end of the backwash aeration pipe is connected with a fan or an air compressor.

5. The device for self-sustained reverse washing of sewage treatment according to claim 1 or 4, characterized in that: The backwash aeration pipe is arranged transversely, and a plurality of air holes are formed in a side wall of the backwash aeration pipe.

6. The device for the autotrophic reverse washing of sewage water according to claim 1, characterized in that: The sulfur autotrophic denitrification filter material layer is made of elemental sulfur and boron mud, magnesium, calcium and iron minerals.

7. A sewage treatment sulfur autotrophic backwash system comprising a filter treatment tank, a water collecting tank, characterized in that: The filter treatment tank is connected with the device inlet water port of the sulfur autotrophic backwash device for sewage treatment through an inlet water pipe, the device outlet water / backwash inlet water port of the sulfur autotrophic backwash device for sewage treatment is connected with the water collecting tank through a drainage pipe, the drainage pipe is provided with a backwash pump, the backwash outlet water port of the sulfur autotrophic backwash device for sewage treatment is connected with the filter treatment tank through a backwash water pipe.

8. The wastewater treatment sulfur autotrophic backwash system according to claim 7, characterized in that: The emptying pipe of the sulfur autotrophic backwash device for sewage treatment is connected with the backwash water pipe.

9. The wastewater treatment sulfur autotrophic backwash system according to claim 7, wherein: An on-off valve is arranged between the water collecting tank and the backwash pump.

10. The wastewater treatment sulfur autotrophic backwash system according to claim 7, wherein: A controller is further arranged, each on-off valve is an electromagnetic valve, the controller is electrically connected with the on-off valves and the backwash pump, and is used for controlling the on-off of each on-off valve and the start and stop of the backwash pump.

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