CN209820559U

CN209820559U - Defoaming and flow stabilizing device for discharge port of sewage treatment plant

Info

Publication number: CN209820559U
Application number: CN201920770463.4U
Authority: CN
Inventors: 马志国; 李海波; 钟希冰; 肖俊
Original assignee: Deep Water Haina Water Group Ltd By Share Ltd
Current assignee: Deep Water Haina Water Group Ltd By Share Ltd
Priority date: 2019-05-25
Filing date: 2019-05-25
Publication date: 2019-12-20
Anticipated expiration: 2029-05-25

Abstract

The utility model discloses a defoaming and flow stabilizing device for a discharge port of a sewage treatment plant, which comprises a drop pool, a drainage weir, a flow channel, a foam interception plate, a water inlet pipe and a water outlet pipe, wherein the drop pool is arranged at the sewage discharge port, and the bottom of the drop pool is provided with an opening; one end of the water inlet pipe is connected with a discharge pipe of a sewage treatment plant, and the other end of the water inlet pipe is connected to an opening of the drop basin and used for discharging sewage to the drop basin; the lateral wall in drop pond is located to the flowing water canal, and the flowing water canal still installs the weir with the junction in drop pond for stabilize rivers. The utility model discloses a defoaming current stabilizer utilizes drop energy dissipation, the method of decompression and stationary flow to the condition that sewage treatment plant discharge port easily produced the foam, lighter or the elimination sewage treatment plant discharge port foam.

Description

Defoaming and flow stabilizing device for discharge port of sewage treatment plant

Technical Field

The utility model belongs to the technical field of sewage treatment, concretely relates to defoaming current stabilizer for sewage treatment plant discharge port.

Background

Even if the water quality of the discharged water of the sewage treatment plant completely reaches the standard, the water quality is clear, and the discharge port generates foam very commonly, the discharged water still contains certain organic matters such as a detergent or a surfactant, so that the foam is easily generated; the hydraulic design of the discharge port is unreasonable, the discharge port directly enters the discharge port through a pressure pipeline, and air is released after pressure reduction, so that the generation of foam is intensified; when the drainage enters the discharge port, the flow velocity is high, the water flow is in a turbulent flow state, and the air enters the water, so that the generation of foam is intensified. The discharge port generates foam which greatly influences the sense, and even the water quality of the discharged water completely reaches the standard, the discharged water is easy to be questioned and complained; meanwhile, the discharge port is generally provided with water quality on-line monitoring equipment and an ultrasonic metering device, and generated foam influences water sample extraction, measurement and metering, so that on-line water quality detection data and water metering data are inaccurate. The conventional defoaming method adopts a hydraulic defoaming method and a defoaming agent adding method for defoaming, the hydraulic defoaming effect is general, water resources are wasted, the position of a discharge port is sensitive, water quality is easy to be suspected of being fake, and the method is less adopted; the defoaming agent is generally organic matter, has good defoaming effect, is suitable for causing secondary pollution of discharged water, and is gradually eliminated particularly under the condition that the drainage standard of the current sewage treatment plant is increasingly strict.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art exists, the utility model provides a defoaming current stabilizer for sewage treatment plant discharge port.

The technical scheme of the utility model is that:

a defoaming and flow stabilizing device for a discharge port of a sewage treatment plant comprises a drop pool, a drainage weir, a flow channel, a foam interception plate, a water inlet pipe and a water outlet pipe, wherein the drop pool is arranged at the sewage discharge port, and the bottom of the drop pool is provided with an opening; one end of the water inlet pipe is connected with a discharge pipe of a sewage treatment plant, and the other end of the water inlet pipe is connected to an opening of the drop basin and used for discharging sewage to the drop basin; the flow channel is arranged on the side wall of the water drop tank, and a drainage weir is further arranged at the joint of the flow channel and the water drop tank and used for stabilizing water flow; the tail end of the flow channel adopts a stepped design and is used for slowing down water flow, and the tail end of the flow channel is also provided with an opening; the water outlet pipe is arranged at an opening at the tail end of the running water channel; the foam intercepting plate is arranged in the middle of the flow channel and used for intercepting foam generated in the flow channel.

Preferably, the drop basin design is twice annular, and outside annular lateral wall is link up with the running water canal, and inside annular height is less than outside annular, and inside annular is through drop basin bottom opening and inlet tube intercommunication.

Preferably, the two ring grooves are of a concentric circle structure, the outer part of each ring groove is of a hollow cylinder shape, and the inner part of each ring groove is provided with a pipeline for water flow to rise.

Preferably, the end of the flow channel is further provided with a marshall tank and an ultrasonic flowmeter, the marshall tank is arranged between the foam interception plate and the water outlet pipe, and the ultrasonic flowmeter is arranged above the marshall tank and used for calculating the water discharge of the sewage plant.

Preferably, the flow velocity in the flow channel is less than 0.2m/s for reducing foam production.

Adopt the technical scheme of the utility model, following beneficial effect has: the utility model discloses a defoaming current stabilizer adopts hydraulic optimization design, produces from energy dissipation, stationary flow and interception tripartite control drainage foam, can the effective control foam production, avoids throwing the defoaming agent defoaming, can save the running cost, prevents secondary pollution, is favorable to the measurement of ultrasonic wave level gauge, and the energy dissipation district can combine biological indicator pond, online sampling pond to build, supports the fish or installs the sample pump, can use in a large number at sewage treatment plant, has better economy, environment and social.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the present invention.

The attached drawings are marked as follows:

1. a drop pool; 2. a drainage weir; 3. a running water channel; 4. a foam interception plate; 5. a water inlet pipe; 6. a water outlet pipe; 7. a Parshall cell; 8. an ultrasonic flow meter.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 and 2, the utility model provides a defoaming and flow stabilizing device for a discharge port of a sewage treatment plant, which comprises a drop pool 1, a drainage weir 2, a flow channel 3, a foam baffle 4, a water inlet pipe 5 and a water outlet pipe 6, wherein the drop pool 1 is arranged at the sewage discharge port, and the bottom of the drop pool is provided with an opening; one end of the water inlet pipe 5 is connected with a discharge pipe of a sewage treatment plant, and the other end of the water inlet pipe is connected to an opening of the drop basin 1 and used for discharging sewage to the drop basin 1; the running water channel 3 is arranged on the side wall of the water drop pool 1, and a drainage weir 2 is further arranged at the joint of the running water channel 3 and the water drop pool 1 and used for stabilizing water flow; the tail end of the flow channel 3 adopts a stepped design and is used for slowing down water flow, and the tail end of the flow channel 3 is also provided with an opening; the water outlet pipe 6 is arranged at the opening at the tail end of the flow channel 3; the foam intercepting plate 4 is installed at the middle of the penstock 3 for intercepting foam generated in the penstock.

Drop 1 design of pond for twice annular, outside annular lateral wall link up with flow channel 3, and inside annular height is less than outside annular, and inside annular is through 1 bottom opening in the pond of falling and inlet tube 5 intercommunication.

The two ring grooves are of concentric circles, the outer portions of the two ring grooves are hollow cylinders, and the inner portions of the two ring grooves are provided with a pipeline for water flow to rise.

The tail end of the flow channel 3 is also provided with a Parshall tank 7 and an ultrasonic flowmeter 8, the Parshall tank 7 is arranged between the foam interception plate 4 and the water outlet pipe 6, and the ultrasonic flowmeter 8 is arranged above the Parshall tank 7 and used for calculating the water discharge of a sewage plant.

The water velocity in the flow channel 3 is less than 0.2m/s for reducing the production of foam.

The utility model discloses the theory of operation does: the utility model discloses a defoaming current stabilizer comprises concentric circles drop energy dissipation district, steady flow district and foam interception board. The concentric circle drop energy dissipation area refers to a common concentric circle drop pool in garden design for reference, drop energy dissipation is carried out on water flow, the water flow changes from pressure flow to free outflow, the pressure in water is reduced, gas in the water can be released to air, bubbles in the water are few, and foam generation can be reduced; the length of the flow channel of the steady flow area is longer, the flow speed is less than 0.2m/s, and the flow is in a laminar flow stable state, so that the generation of foam can be controlled; for small amounts of foam generated, an end foam interceptor was used to avoid foam entering the back end Parshall cell metering unit.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. The utility model provides a defoaming current stabilizer for sewage treatment plant discharge port which characterized in that: the device comprises a drop pool, a drainage weir, a flow channel, a foam interception plate, a water inlet pipe and a water outlet pipe, wherein the drop pool is arranged at a sewage discharge port, and the bottom of the drop pool is provided with an opening; one end of the water inlet pipe is connected with a discharge pipe of a sewage treatment plant, and the other end of the water inlet pipe is connected to an opening of the drop basin and used for discharging sewage to the drop basin; the flow channel is arranged on the side wall of the water drop tank, and a drainage weir is further arranged at the joint of the flow channel and the water drop tank and used for stabilizing water flow; the tail end of the flow channel adopts a stepped design and is used for slowing down water flow, and the tail end of the flow channel is also provided with an opening; the water outlet pipe is arranged at an opening at the tail end of the running water channel; the foam intercepting plate is arranged in the middle of the flow channel and used for intercepting foam generated in the flow channel.

2. The antifoam flow stabilizer for a discharge port of a sewage treatment plant according to claim 1, characterized in that: the design of falling pond is twice annular, and outside annular lateral wall link up with the running water canal, and inside annular height is less than outside annular, and inside annular is through falling pond bottom opening and inlet tube intercommunication.

3. The antifoam flow stabilizer for a discharge port of a sewage treatment plant according to claim 2, characterized in that: the two ring grooves are of concentric circles, the outer portions of the two ring grooves are hollow cylinders, and the inner portions of the two ring grooves are provided with a pipeline for water flow to rise.

4. The antifoam flow stabilizer for a discharge port of a sewage treatment plant according to claim 1, characterized in that: the tail end of the flow channel is further provided with a Parshall tank and an ultrasonic flowmeter, the Parshall tank is arranged between the foam interception plate and the water outlet pipe, and the ultrasonic flowmeter is arranged above the Parshall tank and used for calculating the water discharge of a sewage plant.