CN211635359U

CN211635359U - High-density sedimentation tank

Info

Publication number: CN211635359U
Application number: CN201921840929.XU
Authority: CN
Inventors: 黄开龙; 张徐祥; 王涛
Original assignee: Nanjing Jiangdao Environmental Science And Technology Research Institute Co ltd
Current assignee: Nanjing Jiangdao Environmental Science And Technology Research Institute Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-10-09
Anticipated expiration: 2029-10-30

Abstract

The utility model discloses a high-density sedimentation tank, wherein an aeration pipe is arranged below an inclined pipe in the sedimentation tank, the aeration pipe comprises an aeration main pipe and a plurality of aeration branch pipes connected with the aeration main pipe, the aeration main pipe extends along the horizontal direction and traverses the whole sedimentation tank, and an air inlet of the aeration main pipe is connected with external aeration equipment through a connecting pipe; the aeration equipment is arranged outside the sedimentation tank, and a control valve, an adjusting valve, a check valve and a gas flowmeter are sequentially arranged on the connecting pipe. The utility model discloses the aeration pipe is arranged to the sedimentation tank below the pipe chute, and the gaseous scale deposit material on pipe chute surface is clear away to the gaseous that produces when aeration to the life of extension pipe chute, the running cost that the pipe chute produced is owing to frequently changing to the lowering system.

Description

High-density sedimentation tank

Technical Field

The utility model relates to a high density sedimentation tank belongs to sewage treatment technical field.

Background

The high-efficiency sedimentation tank is a sewage treatment process which can realize rapid sedimentation by utilizing a physical/chemical special sedimentation system. The system has compact arrangement, saves occupied land, is quick to start, has stable effluent quality, and is widely applied to pretreatment systems such as water works, sewage plants, power plants and coal chemical enterprises. The efficient sedimentation tank is characterized in that an inclined pipe is additionally arranged in the sedimentation tank, so that the filtering effect and the treated water quantity of the tank body are far higher than those of other sedimentation tanks. However, because the caliber of the inclined tube is small, impurities such as chemicals and suspended matters added in water are easy to form scale on the surface of the inclined tube after long-term operation, and particularly, the hardened aperture on the surface of the inclined tube is reduced or even blocked due to the water body with poor water quality of inlet water, so that the water quality and the water yield of the tank body are influenced. The inclined tube is changed in the dismantlement of current sedimentation tank maintenance mode many and is given first place to, nevertheless dismantles and changes that the inclined tube is on the one hand work load big, and the darker operational environment of cell body is dangerous, and the inclined tube after on the other hand is changed is made the waste product and is handled and has also increased the running cost of system.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims to solve the technical problem that a high density sedimentation tank is provided, this sedimentation tank arranges the aeration pipe in the pipe chute below, and the gaseous scale deposit material on pipe chute surface of producing clears away through the aeration to the life of extension pipe chute, the operating cost of lowering system owing to frequently changing the pipe chute and producing.

In order to solve the above technical problem, the utility model discloses the technical means who adopts do:

a high-density sedimentation tank is characterized in that an aeration pipe is arranged below an inclined pipe in the sedimentation tank, the aeration pipe comprises an aeration main pipe and a plurality of aeration branch pipes connected with the aeration main pipe, the aeration main pipe extends horizontally and transversely penetrates through the whole sedimentation tank, and an air inlet of the aeration main pipe is connected with external aeration equipment through a connecting pipe; the aeration equipment is arranged outside the sedimentation tank, and a control valve, an adjusting valve, a check valve and a gas flowmeter are sequentially arranged on the connecting pipe.

Wherein, the aeration equipment is a Roots blower which is arranged outside the sedimentation tank body by anchor bolts.

Wherein, the aeration main pipe is fixed on a support column at the bottom of the inclined pipe through a U-shaped bolt.

The aeration branch pipes are uniformly distributed on two sides of the aeration main pipe, extend longitudinally, extend to the pool wall at two ends of each aeration branch pipe, and are fixed on the support columns at the bottoms of the inclined pipes through U-shaped bolts.

Wherein, the vertical distance between the aeration pipe and the bottom of the inclined pipe is not more than 200 cm.

Wherein, still include the PLC control box, aeration equipment, control valve, governing valve, check valve and gas flowmeter are connected with the PLC control box through the cable respectively.

Has the advantages that: the inclined tube in the existing high-density sedimentation tank is mostly disposable, and when the surface of the inclined tube is scaled, the treatment effect of the high-density sedimentation tank can be recovered only by replacement; the utility model discloses increase aeration systems in high density sedimentation tank, start aeration systems when the pipe chute produces the scale deposit, the bubble rises to the top from the pipe chute bottom, rises the in-process and rubs the pipe chute surface to peel off the scale deposit material, keep the clean of pipe chute, make its recovery processing ability, adopt the utility model discloses behind the aeration systems, unless the pipe chute in the sedimentation tank receives mechanical damage, otherwise the pipe chute need not to be changed, has not only saved high density sedimentation tank's maintenance cost, and periodic aeration makes the pipe chute surface clear up, in extension pipe chute life, the pipe chute after the processing can effectively guarantee that the system's product water quality is cleaner, and the product yield is more stable.

Drawings

FIG. 1 is a schematic diagram of the high-density sedimentation tank of the present invention;

fig. 2 is a top view of the aeration pipe in the sedimentation tank of the present invention.

Detailed Description

The technical solution of the present invention is further explained with reference to the accompanying drawings and the specific embodiments.

As shown in figures 1-2, the high density sedimentation tank of the utility model, an aeration pipe 14 is arranged under an inclined pipe 11 in a sedimentation tank 12, the aeration pipe 14 comprises an aeration main pipe 9 and a plurality of aeration branch pipes 10 connected with the aeration main pipe 9, the aeration main pipe 9 extends along the horizontal direction and traverses the whole sedimentation tank 12, an air inlet of the aeration main pipe 9 is connected with an external aeration device 1 through a connecting pipe 6, the aeration device 1 is a Roots blower, the Roots blower is arranged outside the sedimentation tank body through a foundation bolt, the connecting pipe 6 is sequentially provided with a control valve 2, a regulating valve 3, a pressure gauge 7, a check valve 4 and a gas flowmeter 5, the outlet of the Roots blower 1 is provided with the gas flowmeter 5 and the regulating valve 3, so that the opening of the regulating valve 3 is regulated according to the numerical value of the flowmeter, and the mechanical damage to the inclined pipe 11 caused by too large aeration amount or the good removal effect cannot be achieved due to too small aeration amount is prevented; the outlet of the Roots blower 1 is provided with a check valve 4, and the check valve 4 is used for preventing water in the pool from flowing back into the Roots blower 1 to damage the motor when aeration is finished; wherein, the female pipe 9 of aeration is fixed on the support column 13 of pipe chute 11 bottom through U type bolt 8, and aeration branch pipe 10 evenly distributed is in female pipe 9 both sides of aeration, and aeration branch pipe 10 all extends to pool wall department along longitudinal extension and aeration branch pipe 10's both ends, and aeration branch pipe 10 also is fixed on the support column 13 of pipe chute bottom through U type bolt, and such fixed knot constructs by vibrations damage during the aeration that can effectively prevent. The aeration main pipe 9 and the aeration branch pipes 10 are perforated aeration pipes.

The utility model discloses high density sedimentation tank is still including setting up the PLC control box outside the sedimentation tank body, and aeration equipment 1, control valve 2, governing valve 3, manometer 7, check valve 4 and gas flowmeter 5 are connected with the PLC control box through the cable respectively.

High-pressure gas generated after the starting of the Roots blower 1 is conveyed to the control valve 2 along a pipeline and then enters the aeration main pipe 9 inside the pool body through the check valve 4 and the gas flowmeter 5 after the gas flow is regulated by the regulating valve 3. And a pressure gauge 7 is arranged at the outlet of the regulating valve 3 and used for detecting whether the Roots blower 1 normally operates or not. The main aeration pipe 9 enters the tank body and then traverses the tank body to extend to the other side of the tank body, branch aeration pipes 10 extend from two sides of the main aeration pipe 9 respectively, and the main aeration pipe 9 and the branch aeration pipes 10 are fixed on a support column 13 at the bottom of an inclined pipe 11 through U-shaped bolts 8.

When aeration is needed, the PLC control box controls the Roots blower 1 and the control valve 2 to be started, the opening of the adjusting valve 3 is adjusted according to the numerical value displayed by the gas flowmeter 5, stable gas flow enters the main aeration pipe 9 and the branch aeration pipes 10 and is uniformly distributed at the bottoms of the inclined pipes 11 along the gas holes on the surfaces of the branch aeration pipes 10, a large amount of gas generates friction with the surfaces of the inclined pipes 11 along with the rising of bubbles, scaling substances on the surfaces of the inclined pipes 11 are peeled off, and at the moment, the inclined pipes 11 are cleaned; the roots blower 1 and the control valve 2 are closed to the PLC control box after 10-15 min of aeration operation, and shutdown is simultaneously because roots blower 1 is below the liquid level, has partial rivers to get into aeration pipe 14, causes the water hammer phenomenon even, and check valve 4 starts this moment, and check valve 4 can prevent that the water hammer from causing the damage to roots blower 1, can prevent in addition that rivers from going into roots blower 1 and damaging electrical equipment. The aeration of the high-density sedimentation tank is finished and then the high-density sedimentation tank enters a static state of 5-8 min, a large amount of scale substances are suspended in the water body at the moment, suspended impurities naturally settle to the bottom of the tank body and are scraped away by a mud scraper, at the moment, scales on the surface of the inclined tube 11 are washed into the tank body by water flow, the scales naturally settle in the tank body and then fall to the bottom of the tank body, and after the aeration, the sedimentation tank 12 enters the operation stage again.

Claims

1. A high density sedimentation tank which is characterized in that: an aeration pipe is arranged below the inclined pipe in the sedimentation tank, the aeration pipe comprises an aeration main pipe and a plurality of aeration branch pipes connected with the aeration main pipe, the aeration main pipe extends horizontally and transversely penetrates through the whole sedimentation tank, and an air inlet of the aeration main pipe is connected with external aeration equipment through a connecting pipe; the aeration equipment is arranged outside the sedimentation tank, and a control valve, an adjusting valve, a check valve and a gas flowmeter are sequentially arranged on the connecting pipe.

2. The high density settling tank of claim 1, wherein: the aeration equipment is a Roots blower which is arranged outside the sedimentation tank body through foundation bolts.

3. The high density settling tank of claim 1, wherein: the aeration main pipe is fixed on a support column at the bottom of the inclined pipe through a U-shaped bolt.

4. The high density settling tank of claim 1, wherein: the aeration branch pipes are uniformly distributed on two sides of the aeration main pipe, extend longitudinally, extend to the wall of the tank at two ends of the aeration branch pipes, and are fixed on the support columns at the bottoms of the inclined pipes through U-shaped bolts.

5. The high density settling tank of claim 1, wherein: the vertical distance between the aeration pipe and the bottom of the inclined pipe is not more than 200 cm.

6. The high density settling tank of claim 1, wherein: the aeration device, the control valve, the regulating valve, the check valve and the gas flowmeter are respectively connected with the PLC control box through cables.