CN214209523U

CN214209523U - Aeration tank foam suppression device

Info

Publication number: CN214209523U
Application number: CN202022011363.9U
Authority: CN
Inventors: 张丹; 黄天龙; 冯强; 杜蓉; 王鑫羽
Original assignee: Northwest Research Institute of Mining and Metallurgy
Current assignee: Northwest Research Institute of Mining and Metallurgy
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-09-17
Anticipated expiration: 2030-09-15

Abstract

The utility model belongs to the technical field of sewage treatment, and discloses an aeration tank foam inhibition device which comprises a spraying device matched with an aeration tank, wherein the spraying device is connected with a medicament mixing box through a pipeline, and a medicament box filter screen, a metering pump, a check valve and a supercharging device are sequentially arranged on the pipeline connecting the spraying device and the medicament mixing box; the pipeline between the metering pump and the supercharging device is also communicated to the bottom of the aeration tank through a water inlet pipe; the water inlet pipe is provided with a water inlet pipe filter screen and a lift pump; the filter screen of the water inlet pipe is arranged between the lift pump and the aeration tank; the utility model discloses the foam suppresses effectually, effectively improves sewage treatment efficiency and convenient operation.

Description

Aeration tank foam suppression device

Technical Field

The utility model belongs to the technical field of sewage treatment, a foam suppression device is related to, in particular to aeration tank foam suppression device.

Background

In the initial starting stage of the aeration tank, because the sludge load is large, the sludge is not suitable for the sewage quality, and foams are easily formed; according to the quality of sewage, if the concentration of surface active substances (surfactant, grease and protein) in the sewage is high, a large amount of foam is easily generated; the foam generated by the aeration tank can have adverse effects on sewage treatment processes and equipment, and can also affect the normal display of instruments; the viscosity of the foam can influence the oxygenation effect of the surface aeration equipment, reduce the content of dissolved oxygen in the sewage and cause the quality of effluent to be poor; in addition, if the bubbles generated from the aeration tank overflow from the tank, the outer wall of the apparatus is corroded and the operation environment is deteriorated.

At present, a foam inhibition device is not arranged in an aeration tank of a sewage treatment station generally, and for a wastewater treatment system which adopts a micro-bubble surface aeration process to treat high-surface-active-substance-content wastewater, the operation process of the aeration tank can generate starting foam and surfactant foam, and can also enable a large number of microorganisms related to the foam to form a net shape to float on the water surface and surround the foam, so that the surface tension of the foam is increased, and the foam is more stable; therefore, the design of the aeration tank foam inhibition device aiming at the treatment of the wastewater with higher surface active substances by the microbubble surface aeration process has important significance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an aeration tank foam suppression device that foam suppression effect is good, effectively improve sewage treatment efficiency and convenient operation.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a foam inhibition device of an aeration tank comprises a spraying device matched with the aeration tank, wherein the spraying device is connected with a medicament mixing box through a pipeline, and a medicament box filter screen, a metering pump, a check valve and a supercharging device are sequentially arranged on the pipeline connecting the spraying device and the medicament mixing box; the pipeline between the metering pump and the supercharging device is also communicated to the bottom of the aeration tank through a water inlet pipe; the water inlet pipe is provided with a water inlet pipe filter screen and a lift pump; the filter screen of the water inlet pipe is arranged between the lift pump and the aeration tank.

Further, a stirrer is arranged in the medicament mixing box, and a stirring motor is connected to the stirrer.

Furthermore, a medicine measuring cylinder is arranged in the medicine mixing box, and the bottom end of the medicine measuring cylinder extends into the medicine mixing box.

Further, the spraying device comprises a plurality of horizontally arranged spray heads.

Furthermore, scales are evenly distributed on the medicine measuring tube.

Furthermore, the filter screen of the medicament box and the filter screen of the water inlet pipe are both detachable structures.

Compared with the prior art, the beneficial effects of the utility model are as follows: raw water in the aeration tank is used as spraying water, so that the increase of sewage treatment capacity is avoided while water resources are saved; the defoaming agent is added by using the dosing cylinder, so that the generation of foam in sewage treatment is effectively inhibited, and 80% of foam can be effectively inhibited; a stirrer is arranged in the medicament mixing box, and a defoaming agent is reasonably prepared; a medicament box filter screen and a water inlet pipe filter screen are arranged to prevent impurities from entering the spraying device; set up the check valve, prevent to appear flowing backward when shutting down.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Wherein, sprinkler 1, supercharging device 2, inlet tube 3, inlet tube filter screen 4, elevator pump 5, medicament mixing box 6, medicament case filter screen 7, measuring pump 8, check valve 9, agitator 10, volume cartridge case 11.

Detailed Description

An aeration tank foam inhibition device comprises a spraying device 1 matched with an aeration tank, wherein the spraying device 1 comprises a plurality of horizontally arranged spray heads, the spraying device 1 is connected with a medicament mixing box 6 through a pipeline, and a medicament box filter screen 7, a metering pump 8, a check valve 9 and a supercharging device 2 are sequentially arranged on the pipeline connecting the spraying device 1 and the medicament mixing box 6; the pipeline between the metering pump 8 and the supercharging device 2 is also communicated to the bottom of the aeration tank through a water inlet pipe 3; a water inlet pipe filter screen 4 and a lift pump 5 are arranged on the water inlet pipe 3; the inlet tube filter screen 4 sets up between elevator pump 5 and aeration tank, and medicament case filter screen 7 and inlet tube filter screen 4 are detachable construction.

A stirrer 10 is arranged in the medicament mixing box 6, the stirrer 10 is connected with a stirring motor, a medicament measuring cylinder 11 is also arranged in the medicament mixing box 6, the bottom end of the medicament measuring cylinder 11 extends into the medicament mixing box 6, and scales are uniformly distributed on the medicament measuring cylinder 11; the drug measuring cartridge 11 is of a drawing structure and can be drawn out to the top end of the drug mixing box 6.

During the operation, the volume cartridge case 11 is pulled up, puts volume cartridge case 11 after adding the defoaming agent and makes it stretch into medicament mixing box 6, starts agitator 10 with the medicament stirring, opens the valve that sets up on check valve 9 and the inlet tube 3, passes through the pipeline with the medicament of having prepared, after 2 pressure boost through supercharging device, spouts the medicament quantity that sprays into the aeration tank by sprinkler 1 simultaneously through the control of measuring pump 7.

Claims

1. A foam inhibition device of an aeration tank is characterized by comprising a spraying device matched with the aeration tank, wherein the spraying device is connected with a medicament mixing box through a pipeline; the pipeline between the metering pump and the supercharging device is also communicated to the bottom of the aeration tank through a water inlet pipe; the water inlet pipe is provided with a water inlet pipe filter screen and a lift pump; the filter screen of the water inlet pipe is arranged between the lift pump and the aeration tank.

2. The aeration tank foam inhibition device according to claim 1, wherein an agitator is provided in the chemical mixing tank, and an agitation motor is connected to the agitator.

3. The aeration tank foam suppressing apparatus according to claim 2, wherein a dosing cylinder is further provided in the chemical mixing tank, and a bottom end of the dosing cylinder extends into the chemical mixing tank.

4. The aeration tank foam inhibition device according to claim 3, wherein the spraying device comprises a plurality of horizontally arranged spray heads.

5. The aeration tank foam inhibition device according to claim 4, wherein scales are uniformly distributed on the dosing cylinder.

6. The aeration tank foam suppressing apparatus of claim 5, wherein the tank screen and the inlet pipe screen are both detachable.