Deep bed filter denitrification sewage treatment device

Abstract

The utility model discloses a deep-bed filter denitrification sewage treatment device, which relates to the technical field of sewage treatment and comprises a deep-bed filter body and a premixing tank, the premixing tank is mounted on one side of the upper portion of the deep-bed filter body, a fixing frame is mounted on the upper portion of the premixing tank, a carbon adding bin is mounted on the fixing frame, and the carbon adding bin is mounted on the lower portion of the deep-bed filter body. The pre-mixing tank, the stirring motor, the stirring shaft, the stirring rod and the carbon adding bin are matched for use, so that the carbon adding bin can be uniformly mixed, and the carbon adding bin can be uniformly mixed with the pre-mixing tank, the stirring motor, the stirring shaft and the stirring rod; a carbon source and sewage can be pre-mixed in the pre-mixing tank in advance, and the mixing process is accelerated through the stirring equipment, so that the mixing speed of the carbon source and the sewage can be accelerated compared with the mode of directly adding the carbon source into the deep bed filter body, the mixing is more uniform, the quantity and the speed of microbial degradation substances in a water body are increased, and the water quality is improved. Therefore, the treatment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage treatment technical field, concretely is a kind of deep bed filter denitrification sewage treatment device. BACKGROUND

[0002] In today's society, with the acceleration of industrialization and the continuous growth of population, water resource shortage and water pollution problem become increasingly serious, facing this challenge, the innovation of sewage treatment technology is particularly important, among them, denitrification deep bed filter technology with its unique advantages, gradually become the important weapon to solve the problem of sewage treatment, denitrification deep bed filter technology is a kind of sewage treatment process that biological denitrification, filtration, backwashing are integrated, its core lies in through building a deep filter layer, using the microbial community on filter material to carry out biological denitrification reaction, while realizing solid-liquid separation.

[0003] Carbon source in sewage treatment plays a vital role in denitrification process, by reasonable selection of carbon source type and dosage, can optimize denitrification effect, reduce energy consumption and operating cost, at present, the carbon source of existing deep bed filter denitrification sewage treatment device is mostly directly put into deep bed filter, which can easily lead to carbon source may gather in local area, cause uneven mixing, affect reaction rate and effect. UTILITARY MODEL

[0004] The utility model aims at providing a kind of deep bed filter denitrification sewage treatment device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of deep bed filter denitrification sewage treatment device, including deep bed filter body and premixing pool, the upper portion one side of deep bed filter body is installed with premixing pool, the upper portion of premixing pool is installed with fixed frame, carbon addition bin is installed on the fixed frame, flow regulating valve is installed on the bottom outlet of carbon addition bin, suction pump is installed on deep bed filter body, water pipe is installed at both ends of suction pump, two water pipes are arranged in premixing pool and deep bed filter body respectively, stirring shaft is arranged in the bottom of premixing pool, the one end of stirring shaft is directly connected with the output shaft of stirring motor installed on the outer wall of premixing pool side, stirring rod is installed on stirring shaft, water outlet pipe is installed on the bottom of the side surface of deep bed filter body, water quality detector is installed on water outlet pipe, water quality detector is electrically connected with PLC controller installed on the outer wall of deep bed filter body, PLC controller is electrically connected with flow regulating valve.

[0007] As a further scheme of the utility model: water inlet pipe is installed on the upper portion of the side surface of premixing pool.

[0008] As a further scheme of the present utility model: the pre-mixing pool is provided with a ladder at the back.

[0009] As a further scheme of the present utility model: the carbon adding bin is provided with a lower position alarm.

[0010] As a further scheme of the present utility model: one end of the stirring shaft is connected with the pre-mixing pool through a sealing bearing.

[0011] Compared with the prior art, the present utility model has the advantages that:

[0012] 1. The pre-mixing pool, the stirring motor, the stirring shaft, the stirring rod and the carbon adding bin are used in cooperation, so that the carbon source and the sewage can be pre-mixed in the pre-mixing pool, and the mixing process can be accelerated by the stirring equipment.

[0013] 2. The water quality detector, the PLC controller and the flow regulating valve are used in cooperation, the water quality detector collects the effluent nitrate concentration signal and feeds back to the PLC controller, the PLC controller controls the carbon source dosage through the flow regulating valve according to the effluent nitrate concentration, and the carbon source dosage is corrected in real time, so that the risk of effluent exceeding the standard is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of a deep bed filter denitrification sewage treatment device.

[0015] Figure 2 It is a plane structure schematic view of a deep bed filter denitrification sewage treatment device.

[0016] Figure 3 It is an internal structure schematic view of a pre-mixing pool of a deep bed filter denitrification sewage treatment device.

[0017] 1. Deep bed filter body; 2. Pre-mixing pool; 3. Fixed frame; 4. Carbon adding bin; 5. Flow regulating valve; 6. Suction pump; 7. Water pipe; 8. Water inlet pipe; 9. Stirring motor; 10. Water outlet pipe; 11. Water quality detector; 12. PLC controller; 13. Stirring shaft; 14. Stirring rod; 15. Ladder; 16. Lower position alarm. DETAILED DESCRIPTION

[0018] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] Please refer to Figures 1-2 In the embodiment of the present application, a deep bed filter denitrification sewage treatment device comprises a deep bed filter body 1 and a premixing pool 2, the premixing pool 2 is installed on one side of the upper part of the deep bed filter body 1, a water inlet pipe 8 is installed on one side of the upper part of the premixing pool 2, a fixing frame 3 is installed on the upper part of the premixing pool 2, a carbon adding bin 4 is installed on the fixing frame 3, a flow regulating valve 5 is installed on the bottom outlet of the carbon adding bin 4, a suction pump 6 is installed on the deep bed filter body 1, water pipes 7 are installed at both ends of the suction pump 6, the two water pipes 7 are arranged in the premixing pool 2 and the deep bed filter body 1 respectively, a water outlet pipe 10 is installed on one side of the bottom of the deep bed filter body 1, a water quality detector 11 is installed on the water outlet pipe 10, the water quality detector 11 is electrically connected with a PLC controller 12 installed on the outer wall of the deep bed filter body 1, the PLC controller 12 is electrically connected with the flow regulating valve 5, the model of the PLC controller 12 is S7-200, and the model of the water quality detector 11 is BSK-LZ-100. In the sewage treatment process, the removal of nitrate is usually completed through denitrification, and this process needs carbon source as an electron donor. The addition amount of the carbon source directly affects the denitrification efficiency, and then affects the concentration of the effluent nitrate. Therefore, by monitoring the concentration of the effluent nitrate, whether the addition of the carbon source is appropriate can be indirectly evaluated. If the concentration of the effluent nitrate is high, it may mean that the addition of the carbon source is insufficient, and the amount of the carbon source needs to be increased. On the contrary, if the concentration of the effluent nitrate is low, it may mean that the addition of the carbon source is excessive, and the amount of the carbon source needs to be reduced.

[0020] A ladder 15 is installed at the rear part of the premixing pool 2. The setting of the ladder 15 can facilitate personnel to get on the premixing pool 2 to add the carbon source into the carbon adding bin 4.

[0021] Please refer to Figures 1-3 A stirring shaft 13 is arranged at the bottom of the premixing pool 2. One end of the stirring shaft 13 is directly connected with an output shaft of a stirring motor 9 installed on the outer wall of one side of the premixing pool 2. A stirring rod 14 is installed on the stirring shaft 13. One end of the stirring shaft 13 is sealingly and rotatably connected with the premixing pool 2 through a sealing bearing. In this way, water leakage of the premixing pool 2 can be prevented.

[0022] Please refer to Figure 2The carbon adding bin 4 is provided with a lower position alarm 16, which is a PRL201 type and used to alarm when the material level is too low.

[0023] The working principle of the utility model is:

[0024] In use, sewage from outside enters the premixing tank 2 through the water inlet pipe 8, and the flow regulating valve 5 at the bottom of the carbon adding bin 4 is opened to continuously add carbon source into the premixing tank 2, at the same time, the stirring motor 9 drives the stirring rod 14 to rotate through the stirring shaft 13 to make the sewage and the carbon source fully mix, then the mixed sewage is pumped out from the premixing tank 2 by the suction pump 6 and pumped into the deep bed filter tank body 1, then the sewage is filtered through the filter layer in the deep bed filter tank body 1 and discharged from the water outlet pipe 10, the water quality detector 11 installed on the water outlet pipe 10 collects the nitrate concentration in the water, and the collected nitrate concentration signal is fed back to the PLC controller 12, if the nitrate concentration of the effluent is too high (exceeds the preset range of the PLC controller 12), it is considered that the amount of carbon source added is insufficient, so the flow regulating valve 5 is further increased to increase the amount of carbon source added, if the nitrate concentration of the effluent is too low (lower than the preset range of the PLC controller 12), it is considered that the amount of carbon source added is excessive, so the flow regulating valve 5 is reduced to reduce the amount of carbon source added, so as to continuously correct the amount of carbon source added and reduce the risk of effluent exceeding the standard.

[0025] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A denitrification wastewater treatment apparatus using a deep-bed filter, comprising a deep-bed filter body (1) and a premixing tank (2), characterized in that: The upper side of the deep bed filter tank body (1) is provided with a premixing tank (2), the upper part of the premixing tank (2) is provided with a fixing frame (3), the fixing frame (3) is provided with a carbon adding bin (4), the bottom outlet of the carbon adding bin (4) is provided with a flow regulating valve (5), the deep bed filter tank body (1) is provided with a suction pump (6), both ends of the suction pump (6) are provided with water pipes (7), the two water pipes (7) are arranged in the premixing tank (2) and the deep bed filter tank body (1) respectively, the bottom of the premixing tank (2) is provided with a stirring shaft (13), one end of the stirring shaft (13) is directly connected with the output shaft of a stirring motor (9) arranged on the outer wall of one side of the premixing tank (2), the stirring shaft (13) is provided with a stirring rod (14), the side surface of one side of the deep bed filter tank body (1) is provided with a water outlet pipe (10), the water outlet pipe (10) is provided with a water quality detector (11), the water quality detector (11) is electrically connected with a PLC controller (12) arranged on the outer wall of the deep bed filter tank body (1), and the PLC controller (12) is electrically connected with the flow regulating valve (5).

2. The denitrification wastewater treatment device of a deep bed filter tank according to claim 1, characterized in that: The upper part of the side surface of the premixing tank (2) is provided with a water inlet pipe (8).

3. The denitrification wastewater treatment device of a deep bed filter tank according to claim 1, characterized in that: The rear part of the premixing tank (2) is provided with a crawling ladder (15).

4. The denitrification wastewater treatment device of a deep bed filter tank according to claim 1, characterized in that: The carbon adding bin (4) is provided with a lower position alarm (16).

5. The denitrification wastewater treatment device of a deep bed filter tank according to claim 1, characterized in that: One end of the stirring shaft (13) is sealingly and rotatably connected with the premixing tank (2) through a sealing bearing.

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