Agent adding auxiliary device for efficient sedimentation tank

Abstract

The utility model discloses a dosing auxiliary device for a high-efficiency sedimentation tank, and relates to the technical field of municipal sewage treatment. The device comprises a dosing device, a diluting device and a mixing device. The dosing device is composed of a dosing pump, a dosing pipeline, a dosing point and a first adjusting valve, the diluting device is composed of a diluting water pump, a diluting water pipe and a second adjusting valve, and the mixing device is composed of an annular mixing pipeline and a nozzle. Medicament is added through the dosing device, diluted through the diluting device, injected in the mixing device in a high-speed jet mode and mixed with sewage in the flocculation reaction tank, and the optimal mixing effect is guaranteed by adjusting the angle of a nozzle. According to the utility model, chemicals can be saved, the dosing concentration of the chemicals can be better controlled, the flocculation reaction efficiency is improved, and the treatment effect of an efficient sedimentation tank process is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to municipal sewage treatment technical field, concretely for a kind of dosing auxiliary device for high-efficiency sedimentation tank. BACKGROUND

[0002] With the acceleration of urbanization process in China, the discharge standard of the state to the urban sewage treatment plant is further improved. The new construction project and the standard-raising reconstruction project of the sewage treatment plant are carried out on a large scale, so that the depth treatment process of sewage can be implemented in the urban sewage treatment plant. The high-efficiency sedimentation tank process is a kind of efficient physicochemical treatment process, which can make the chemical agent fully mixed and reacted with the pollutants in water, so as to precipitate and remove the pollutants in water, and the effluent quality is stable. The high-efficiency sedimentation tank technology is widely used, which can be used for industrial wastewater treatment and urban sewage treatment. Its main advantages are high treatment efficiency, simple operation and management, low treatment cost and the like.

[0003] As an important treatment process for removing COD (chemical oxygen demand), TP (total phosphorus) and SS (suspended solids) in the current municipal sewage treatment depth treatment, the flocculation reaction zone of the main process link needs to add PAM (polyacrylamide). As a kind of high-viscosity coagulant aid, the preparation of PAM is troublesome, which generally needs more than 40 minutes of curing time. In order to facilitate the addition, the PAM preparation device generally prepares the concentration of about 2 ‰, which needs to be mixed and diluted in the secondary dilution device. The secondary dilution device generally uses a tap water pipe, which has limited flow, resulting in insufficient dilution and poor mixing effect, so that the addition concentration of the agent is too large, causing waste of the agent, and the flocculation reaction effect cannot be guaranteed. UTILITY MODEL CONTENT

[0004] In order to solve the problems existing in the prior art, the purpose of the utility model is to provide a dosing auxiliary device for high-efficiency sedimentation tank. It can save the agent, better control the addition concentration of the agent, improve the flocculation reaction efficiency, and ensure the treatment effect of the high-efficiency sedimentation tank process.

[0005] In order to achieve the above purpose, the technical scheme of the utility model is realized in the following way:

[0006] A dosing auxiliary device for high-efficiency sedimentation tank, which comprises a dosing device, a dilution device and a mixing device. The dosing device is composed of a dosing pump, a dosing pipeline, a dosing point and a first regulating valve, the dilution device is composed of a dilution water pump, a dilution water pipeline and a second regulating valve, and the mixing device is composed of a ring-shaped mixing pipeline and a nozzle.

[0007] The dosing pipeline is provided with a first regulating valve, and the dosing amount is regulated by regulating the opening of the valve. The end of the dosing pipeline is divided into two branches, and the end of the branch is connected to the mixing system through a dosing point, so that when one of the dosing pipelines fails, normal dosing can be ensured, and the flexibility of dosing is increased.

[0008] The flow of the dilution water pump in the dilution device is designed to be 10 times the dosing amount, and the second regulating valve is arranged on the dilution pipeline to control the water pump flow to be flexibly regulated between 1-10 times. The dilution water is selected from the effluent of the high-efficiency sedimentation tank, and the water quantity is sufficient. The end of the dilution water pipe is connected to the mixing device to form an integral whole.

[0009] The mixing device is used for mixing the dilution water and the medicament. The mixing device is provided with a ring-shaped mixing pipeline, and nozzles are uniformly arranged on the pipeline at intervals of 20°, and the specification of the nozzles is Φ5mm, and the direction of the nozzles is rotatable.

[0010] Compared with the prior art, the utility model has the following advantages and positive effects:

[0011] (1) The PAM medicament can improve the dilution multiple and improve the use efficiency of the PAM medicament through the device;

[0012] (2) Due to the improvement of the dilution multiple, the preparation concentration of the PAM preparation device can be improved from 2 ‰ to 5 ‰, so that the volume of the PAM preparation device is saved by more than 2.5 times, and the equipment cost is saved. At the same time, due to the reduction of the volume, the power of the matched mixer of the PAM preparation device is correspondingly reduced by more than 2 times, and the power consumption is saved;

[0013] (3) The mixed liquid of the medicament and water is sprayed out through the mixing device, and the power of the high-efficiency sedimentation flocculation mixer is assisted, the mixing effect is better, the flocculation process efficiency is improved, and the water quality is more guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A structure diagram of the high-efficiency sedimentation tank dosing auxiliary device is provided.

[0015] In the figure: 1, dilution water pump; 2, dilution water pipe; 3, dosing pipeline; 4, dosing pump; 5, nozzle; 6, ring-shaped mixing pipeline; 7, dosing point; 8, first regulating valve; 9, second regulating valve. DETAILED DESCRIPTION

[0016] The utility model will be further described in combination with the drawings and specific embodiments.

[0017] Reference Figure 1The utility model relates to a kind of dosing auxiliary devices for high-efficiency sedimentation tank, it includes dosing device, dilution device and mixing device.The dosing device is composed of dosing pump 4, dosing pipeline 3, dosing point 7 and first regulating valve 8, the dilution device is composed of dilution water pump 1, dilution water pipe 2 and second regulating valve 9, the mixing device is composed of annular mixing pipeline 6 and nozzle 5.The end of dosing pipeline 3 is divided into two branches, respectively access mixed system.

[0018] Dosing pump 4 transports PAM medicament through dosing pipeline 3, the end of dosing pipeline 3 is divided into two branches, when one way dosing pipeline 3 has problem, can guarantee normal dosing, increase the flexibility of medicament dosing.Branch end is respectively accessed mixed system through dosing point 7, medicament dosing amount is adjusted by the valve opening of first regulating valve 8 on dosing pipeline 3, also can according to actual operation situation consider to open 1 dosing point 7 or simultaneously open 2 dosing points 7 to adjust medicament dosing amount.

[0019] Dilution water pump 1 takes water from high-efficiency sedimentation tank outlet pool, dilution water is injected into mixing device through dilution water pipe 2.In this process, by adjusting the second regulating valve opening on dilution water pipe 2, control dilution water quantity, specific dilution ratio is adjusted in combination with flocculation reaction effect.

[0020] After dilution water and medicament are mixed in mixing device, mixed liquid is ejected by nozzle 5 installed on mixing device in high-speed jet mode, mixes with sewage in flocculation reaction tank, and by adjusting the angle of nozzle 5, make jet flow and flocculation agitator water flow direction consistent when running, guarantee optimal mixing effect.

Claims

1. A dosing auxiliary device for high-efficiency sedimentation tank, comprising a dosing device, a dilution device and a mixing device, the dosing device is composed of a dosing pump (4), a dosing pipeline (3), a dosing point (7) and a first regulating valve (8), characterized in that The end of the dosing pipeline (3) is divided into two branches, which are connected to the mixing system respectively. The dilution device is composed of a dilution water pump (1), a dilution water pipeline (2) and a second regulating valve (9). The mixing device is composed of a ring-shaped mixing pipeline (6) and a nozzle (5).

2. A dosing aid for a high rate settling tank according to claim 1, characterised in that The nozzles (5) are uniformly distributed on the ring-shaped mixing pipeline (6) at intervals of 20°, and the specification is Φ5mm. The direction of the nozzles is adjustable.

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