CN216513320U - Multifunctional three-layer structured sewage pretreatment integrated system - Google Patents

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to a multifunctional three-layer structure sewage pretreatment integrated system which comprises an adjusting tank deeply buried underground, wherein the liquid level in the adjusting tank is not higher than the pipe bottom elevation of a water inlet pipe network, a dosing and medicine storage room is arranged at the upper part of the adjusting tank, the dosing and medicine storage room is of a semi-underground structure, an air floatation device is arranged at the upper part of the dosing and medicine storage room, a PAC dosing device and a PAM dosing device for dosing and flocculating the air floatation device are arranged in the dosing and medicine storage room, and a lifting water pump for providing sewage to the air floatation device is arranged in the adjusting tank; the device sets up equalizing basin, adds medicine storage room and air supporting device respectively from bottom to top, and three-layer structure (building) stack is in the same place, has realized the function of three link with the area of one deck, has saved the area of sewage station greatly, has practiced thrift the soil, has still reduced the on-the-way hydraulic loss of sewage lifting line, has improved the utilization efficiency of promotion water pump, has practiced thrift the energy.

Description

Multifunctional three-layer structured sewage pretreatment integrated system

Technical Field

The utility model belongs to the technical field of sewage treatment, and particularly relates to a multifunctional three-layer structure sewage pretreatment integrated system.

Background

In the field of sewage treatment, particularly in the field of industrial wastewater treatment, an adjusting tank is particularly widely applied, each industrial sewage station has an adjusting tank, and in the pretreatment process of industrial wastewater, the joining process at the rear end of the adjusting tank is usually a dosing flocculation air flotation process and is matched with an auxiliary room dosing room to form a pretreatment unit of industrial wastewater.

In the process of discharging industrial wastewater, the industrial wastewater changes along with the change of production conditions, and the conditions of non-uniform water quality and unstable water quantity exist. Particularly, when an accident occurs during production or rainwater is excessive, the quality and quantity of the wastewater change greatly, and the change can cause abnormality in the wastewater treatment process, reduce the treatment effect and fail to fully exert the design load of the treatment equipment. In order to ensure that the treatment process works normally and is not influenced by the peak flow or the peak concentration change of the wastewater, the wastewater is required to have stable water quantity and uniform water quality before treatment, the water quality and the water quantity must be regulated, and the setting of the regulating tank can meet the requirement.

The common equalizing basin is intake for gravity flow, the pump is used for pumping out of water, the highest water level is not higher than the design water level of inlet tube in the pond, the effective depth of water is generally 2-3m, so the equalizing basin is located the lowest of whole factory, and the degree of depth of equalizing basin still will be adjusted along with the degree of depth of water inlet pipe network, the elevation of sewage collection pipe network is deepened more, the underground equalizing basin is also deepened more, for guaranteeing not depositing sewage in the sewage collection pipe network, the liquid level in the underground equalizing basin just can not be higher than the pipe bottom elevation of inlet tube network, so just cause the invalid depth of water of underground equalizing basin just also to be higher more, the invalid volume of equalizing basin that causes just also is big more, the increase of the civil engineering investment cost of equalizing basin has no reason.

Taking the elevation of the bottom of a water inlet pipe network as an example of minus 3.000m, the total depth of an adjusting tank is 5.800m, the elevation of the top of the adjusting tank is 0.300m, and the elevation of the bottom of the adjusting tank is minus 5.500m, the maximum effective water level in the adjusting tank is minus 3.000m, the maximum effective water depth is 2.500m, and an invalid space with the height of 3.300m is formed above the water surface in the adjusting tank, so that the water can not be used, the investment is increased, and the waste is great; after the sewage is homogenized and equalized in the adjusting tank, the sewage is lifted to a subsequent air floatation device through an adjusting tank lifting pump arranged in the tank, meanwhile, a PAC (programmable automation controller) dosing device and a PAM (polyacrylamide) dosing device arranged in a dosing room respectively dose flocculating agents polyaluminium chloride and polyacrylamide as coagulant aids into the air floatation device, the dosing flocculation reaction of the whole sewage is completed through the adsorption and bridging action, the effluent of the air floatation device automatically flows to an intermediate water tank, and the sewage is lifted to a subsequent treatment unit through an intermediate water tank lifting pump arranged in the intermediate water tank; the whole process adjusting tank, the dosing room, the air floatation device and the middle water tank are mutually independent and respectively have independent spaces, the occupied area is large, the invalid space of the adjusting tank is large, and the utilization rate of the tank capacity is low.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a multifunctional three-layer structure sewage pretreatment integrated system, which changes the method that the tank top of an adjusting tank is exposed out of the ground by positive and negative zero elevations of 30cm, the tank top of the adjusting tank is completely buried underground, the elevation of the tank top is only 50cm higher than the liquid level in the tank, only a lifting water pump access hole is exposed out of the ground instead of the whole tank top is exposed out of the ground, so that the height of the tank wall is shortened, the engineering quantity of the adjusting tank construction is reduced, the cost is saved, the saved space is used as an auxiliary room and an equipment layer, the multifunctional space utilization is realized on the premise of not increasing the floor area, the land area is the largest asset in industrial and mining enterprises, the least floor area can be used in sewage treatment, and the combination of multiple process and multiple functions is realized, and the multifunctional adjusting tank is the largest bright point of the utility model.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a multi-functional three layer construction sewage pretreatment integration system, includes and buries deeply to the equalizing basin underground, with the intake pipe net that has of equalizing basin intercommunication, the liquid level in the equalizing basin is not higher than the socle elevation of intake pipe net, is provided with on the upper portion of equalizing basin and adds the medicine and store up between the medicine, add the medicine and store up the medicine and be half underground structure, be provided with the air supporting device on the upper portion of adding the medicine and storing up between the medicine, be provided with PAC charge device and PAM charge device that are used for adding medicine flocculation to the air supporting device in adding the medicine storage room, be provided with in the equalizing basin and be used for providing the lift pump of sewage in the air supporting device.

Preferably, the elevation of the top of the regulating tank is 50cm higher than the liquid level in the tank.

Preferably, the underground part of the medicine adding and storing room is provided with a stair from the ground height to the bottom in the medicine adding and storing room.

Preferably, the PAC dosing device and the PAM dosing device respectively dose flocculating agents of polyaluminium chloride and polyacrylamide into the air flotation device.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model adopts a superposition mode designed from bottom to top, vertical construction is carried out, the storage and homogenization and the uniform amount of sewage and the subsequent dosing flocculation and air flotation reaction are designed together, the regulating tank is taken as a base layer, the regulating tank, the dosing storage room and the air flotation device are respectively arranged from bottom to top, and three layers of structures (buildings) are superposed together, thereby realizing the functions of three links by using the floor area of one layer, greatly saving the floor area of a sewage station, saving the land, reducing the hydraulic loss along the way of a sewage lifting pipeline, improving the utilization efficiency of a lifting water pump and saving the energy.

Meanwhile, the distance of the lifting pipeline is shortest, no elbow is arranged in the middle of the pipeline process, so that the local hydraulic loss and the on-way hydraulic loss of the whole pipeline are minimum, the pipe diameter design and the model selection of the water outlet pipeline of the lifting water pump can be smaller than those of the traditional form, the dosing pipeline is almost straight up and down, no elbow is arranged, the on-way hydraulic loss and the local hydraulic loss of the whole pipeline are minimum, so that the factors of the head loss do not need to be excessively considered when the model selection of the dosing pump equipment is carried out, compared with the traditional mode, the power of the equipment can be reduced by at least one level, the investment cost of the equipment is saved, the power consumption is low, and the operation cost is saved; the air-float effluent can automatically flow into the back-end biochemical treatment unit by liquid level difference, thereby realizing unpowered water inlet of the back-end biochemical treatment system, avoiding the traditional mode of water inlet by secondary lifting, saving the investment cost and the operating cost of secondary lifting equipment again in the link, and being a system combination worthy of popularization and application.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic cross-sectional view of the present invention;

in the figure: 1 equalizing basin, 2 add medicine and store up medicine room, 3 air supporting devices, 4PAC charge device, 5PAM charge device, 6 lift water pumps, 7 stairs.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1, the present embodiment provides the following technical solutions: a multifunctional three-layer sewage pretreatment integrated system comprises an adjusting tank 1 buried underground, a water inlet pipe network communicated with the adjusting tank 1, a liquid level in the adjusting tank 1 is not higher than a pipe bottom elevation of the water inlet pipe network, a tank top elevation of the adjusting tank 1 is higher than a liquid level in the tank by 50cm, a chemical adding and storing room 2 is arranged at the upper part of the adjusting tank 1, the chemical adding and storing room 2 is of a semi-underground structure, a stair 7 from the ground height to the bottom in the chemical adding and storing room 2 is arranged at the underground part of the chemical adding and storing room 2, an air flotation device 3 is arranged at the upper part of the chemical adding and storing room 2, a chemical adding room and a chemical storing room are arranged in the chemical adding room, a PAC chemical adding device 4 and a PAM chemical adding device 5 for adding chemical and flocculation to an air flotation device 3 are arranged in the chemical adding room, daily and standby flocculating agent polyaluminium chloride and polyacrylamide are stored in the chemical storing room, two lifting water pumps 6 for providing sewage to the air flotation device 3 are arranged in the adjusting tank 1, PAC dosing device 4 and PAM dosing device 5 respectively feed flocculating agent polyaluminium chloride and coagulant aid polyacrylamide into air flotation device 3.

In the multifunctional three-layer structure sewage pretreatment integrated system in the application, an adjusting tank 1 is positioned at the lowest layer, and by taking the elevation of the bottom of a water inlet pipe network as an example of minus 3.000m, the total tank depth of the adjusting tank 1 is 3.000m, the elevation of the top of the adjusting tank 1 is minus 2.500m, the elevation of the bottom of the adjusting tank 1 is minus 5.500m, the maximum effective water level in the adjusting tank 1 is minus 3.000m, the maximum effective water depth is 2.500m, only 0.500m of super-high height is reserved above the water level in the adjusting tank 1 at the moment, the space between the elevation of the top of the tank and the elevation of the positive and negative ground is utilized as a dosing and medicine storing room 2 of a pretreatment process at the rear end of the adjusting tank 1, a PAC dosing and medicine adding device 4 and a PAM device 5 are arranged in the dosing and medicine storing room 2, an air floating device 3 is arranged on the top of the dosing and medicine storing room as an equipment platform, the whole system adopts a stacking mode designed from bottom to top, and is constructed vertically, the sewage storage, homogenizing and homogenizing treatment device has the advantages that sewage storage, homogenizing and homogenizing treatment, subsequent dosing and flocculation and air floatation reaction are designed together, the adjusting tank 1, the dosing and medicine storage room 2 and the air floatation device 3 are arranged on the basis of the adjusting tank 1 from bottom to top respectively, three-layer buildings are stacked together, the functions of three links are realized by the occupied area of one layer, the occupied area is greatly saved, the pressure loss of a sewage lifting pipeline and a dosing pipeline is reduced, and the tank capacity utilization rate of the adjusting tank 1 is also improved.

Sewage flows into an adjusting tank 1 automatically through a sewage pipe network, after homogenization and equalization are carried out in the adjusting tank 1, the sewage is lifted to a subsequent air floatation device 3 located on the uppermost layer through a lifting water pump 6 placed in the tank, meanwhile, a PAC (programmable automation controller) dosing device 4 and a PAM (polyacrylamide) dosing device 5 placed in a dosing and medicine storage room 2 respectively dose flocculating agent polyaluminium chloride and coagulant aid polyacrylamide into the air floatation device 3, dosing and flocculation reaction of the whole sewage is completed through an adsorption bridging effect, water discharged from the air floatation device 3 can automatically flow into a biochemical treatment unit at the rear end through a liquid level difference, unpowered water inlet of a rear-end biochemical treatment system is realized, the traditional mode of water inlet through secondary lifting is avoided, an intermediate water tank does not need to be additionally arranged, and investment cost and operating cost of secondary lifting equipment are saved again in the link.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the utility model as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. The utility model provides a sewage pretreatment integrated system of multi-functional three layer construction which characterized in that: including burying deep equalizing basin (1) to the underground, with equalizing basin (1) intercommunication have the water inlet pipe network, the liquid level in equalizing basin (1) is not higher than the socle elevation of inlet pipe network, is provided with on the upper portion of equalizing basin (1) and adds medicine storage room (2), add medicine storage room (2) and be half underground structure, be provided with air supporting device (3) on the upper portion of adding medicine storage room (2), be provided with PAC charge device (4) and PAM charge device (5) that are used for adding medicine flocculation to air supporting device (3) in adding medicine storage room (2), be provided with in equalizing basin (1) and be used for providing lift water pump (6) of sewage in air supporting device (3).

2. The integrated multifunctional three-layer structured sewage pretreatment system according to claim 1, wherein: the elevation of the top of the regulating tank (1) is 50cm higher than the liquid level in the tank.

3. The integrated multifunctional three-layer structured sewage pretreatment system according to claim 1, wherein: the underground part of the medicine adding and storing room (2) is provided with a stair (7) from the ground height to the bottom in the medicine adding and storing room (2).

4. The integrated multifunctional three-layer structured sewage pretreatment system according to claim 1, wherein: and the PAC dosing device (4) and the PAM dosing device (5) respectively dose flocculating agents of polyaluminium chloride and polyacrylamide as coagulant aids into the air flotation device (3).

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