CN216005397U

CN216005397U - Sewage treatment sand settling device

Info

Publication number: CN216005397U
Application number: CN202122206644.4U
Authority: CN
Inventors: 曲智
Original assignee: DALIAN DAKAI SEWAGE TREATMENT CO LTD
Current assignee: DALIAN DAKAI SEWAGE TREATMENT CO LTD
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-03-11
Anticipated expiration: 2031-09-13

Abstract

A sewage treatment sand settling device belongs to the technical field of sewage treatment. The sewage treatment sand settling device comprises a water inlet pump, a sand-water separator, an aeration device and a settling device. This sewage treatment desilting device separates the organic matter on sand grain surface through set up aeration equipment at the front end, for the following sewage treatment unit provides a large amount of carbon sources, the saving of very big degree the medicament cost, the device sets up the sediment device through the rear end, relies on the improvement by a wide margin of action of gravity to remove sand efficiency. The sand settling device is an integrated device, so that the floor area of the device is greatly saved, and after aeration treatment, because the content of organic particles on the surface of deposited sand particles is reduced, the odor concentration generated by the sand particles separated by the sand-water separator is obviously reduced, and the pollution to the ambient air is reduced.

Description

Sewage treatment sand settling device

Technical Field

The utility model relates to a sewage treatment desilting device belongs to sewage treatment technical field.

Background

Suspended matters are an important index in a sewage treatment process, and sand grains in the suspended matters are mainly removed by a sand settling process of primary treatment. At present, the sand settling modes adopted by a plurality of urban sewage treatment plants in China mainly comprise an aeration sand settling tank, a rotational flow sand settling tank and a advection sand settling tank. However, in the actual operation process, the aeration sand sedimentation tank has a good treatment effect on sand grains with the grain diameter larger than 0.15mm, but has a poor treatment effect on sand grains with small grain diameter. Although the cyclone sand settling tank has a good treatment effect on sand particles with small particle sizes, the stirring paddle of the cyclone sand settling tank is easy to wind a fibrous object and occupies a large area. The biggest defect of the advection sand sedimentation tank is that organic matters on the surface of sand grains can not be separated, so that the carbon source in the subsequent process section is insufficient.

Disclosure of Invention

In order to overcome the problem that exists among the prior art, the utility model provides a sewage treatment sand setting device, this sand setting device include through the front end set up the aeration district, separate out the organic matter on sand grain surface, for hou mian sewage treatment unit provides the carbon source, practice thrift the medicament cost, set up the settling zone through the rear end, rely on the action of gravity to improve sand removal efficiency by a wide margin, through with aeration equipment and settling device design integrated device, practiced thrift area by a wide margin.

The utility model adopts the technical proposal that: the utility model provides a sewage treatment sand setting device includes intake pump, husky water separator, aeration equipment and deposits the device, aeration equipment contains aeration tank, fan and the first pump of inhaling husky, and the aeration tank adopts the weir board of intaking to be higher than play weir board, and the aeration tank bottom is equipped with the pool type structure of recessed aeration tank collection husky groove, and the intake pump passes through the water inlet of water intaking connection weir board upper left portion, and the row's husky mouth of aeration tank collection husky tank bottom is through first husky valve of arranging and first husky pump connection first sand discharge pipe, and the aeration pipe network of aeration tank bottom is connected through the air-supply line to the fan.

The sediment device contains sedimentation tank, sand pump and second sediment discharge pipe are inhaled to the second, the sedimentation tank adopts the pond diapire that connects gradually left pool wall, the slope of below right side, recessed sedimentation tank collection sand groove, the pool type structure of right pool wall, the sedimentation tank is through the play weir board of left pool wall connection aeration tank, the upper end setting that the upper end of left pool wall is less than a water weir board, the drainage pipe is connected through the drain valve in the outlet of right upper portion of right pool wall right side, sediment outflow mouth of sedimentation tank collection sand tank bottom is inhaled sand pump through the second and is connected the second and arrange sand pipe.

And a sand-water separator is arranged under the sand outlet of the first sand discharge pipe and the sand outlet of the second sand discharge pipe.

The utility model has the advantages that: the utility model provides a sewage treatment sand setting device includes the intake pump, husky water separator, aeration equipment and sediment device, aeration equipment contains the aeration tank, fan and first sand suction pump, the aeration tank adopts the weir board of intaking to be higher than play weir board, the bottom is connected out pool type structure that weir board department set up recessed aeration tank collection sand groove, the intake pump passes through the water inlet valve and connects the water inlet on weir board upper portion of intaking, the row's husky mouth of aeration tank collection sand tank bottom is through first husky valve and first sand suction pump connection first sand discharge pipe, the aeration pipe network of aeration tank bottom is connected through the air-supply line to the fan. The sedimentation device contains the sedimentation tank, husky pump is inhaled to the second and husky pipe is arranged to the second, the sedimentation tank adopts the pond diapire that connects gradually left pool wall, the slope of below right side, recessed sedimentation tank collection sand groove, the pool type structure of right pool wall, the sedimentation tank is through the play weir plate of left pool wall connection aeration tank, the upper end of left pool wall is less than the upper end setting of play weir plate, the drain valve is passed through in the outlet on right pool wall upper portion and is connected the drain pipe, sediment outflow mouth of sedimentation tank collection sand tank bottom portion inhales husky pump through the second and connects the husky pipe of second row through the second. This sewage treatment desilting device separates the organic matter on sand grain surface through set up aeration equipment at the front end, for the following sewage treatment unit provides a large amount of carbon sources, the saving of very big degree the medicament cost, the device sets up the sediment device through the rear end, relies on the improvement by a wide margin of action of gravity to remove sand efficiency. The sand settling device is an integrated device, so that the floor area of the device is greatly saved, and after aeration treatment, because the content of organic particles on the surface of deposited sand particles is reduced, the odor concentration generated by the sand particles separated by the sand-water separator is obviously reduced, and the pollution to the ambient air is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a sewage treatment sand-settling device.

In the figure: 1. the device comprises a water inlet pump, a water inlet valve, a water inlet tank, a water aeration tank, a water inlet weir plate, a water outlet weir plate, a water c, an aeration tank sand collecting groove, a water d, an aeration pipe network, a fan, a sedimentation tank, a left tank wall, a 4b tank bottom wall, a sedimentation tank sand collecting groove, a right tank wall, a 4e water discharge valve, a 5 first sand suction pump, a 5a first sand discharge valve, a 6 second sand suction pump, a 6a second sand discharge valve, a 6b second sand discharge pipe, a 7 and a sand-water separator.

Detailed Description

The present invention is described below with reference to the accompanying drawings and the embodiments:

fig. 1 shows a schematic structural diagram of a sewage treatment sand settling device. In the figure, the sewage treatment sand settling device comprises a water inlet pump 1, a sand-water separator 7, an aeration device and a sedimentation device, wherein the aeration device comprises an aeration tank 2, a fan 3 and a first sand suction pump 5, the aeration tank 2 adopts a water inlet weir plate 2a higher than a water outlet weir plate 2b, the bottom of the aeration tank 2 is provided with a pool type structure of a concave aeration tank sand collecting groove 2c, the water inlet pump 1 is connected with a water inlet at the upper left part of the water inlet weir plate 2a through a water inlet valve 1a, a sand discharging port at the bottom of the aeration tank sand collecting groove 2c is connected with a first sand discharging pipe 5b through a first sand discharging valve 5a and a first sand suction pump 5, and the fan 3 is connected with an aeration pipe network 2d at the bottom of the aeration tank 2 through an air inlet pipe.

The sedimentation device comprises a sedimentation tank 4, a second sand suction pump 6 and a second sand discharge pipe 6b, the sedimentation tank 4 adopts a tank type structure which is sequentially connected with a left tank wall 4a, a tank bottom wall 4b inclined towards the lower right, a recessed sedimentation tank sand collecting groove 4c and a right tank wall 4d, the sedimentation tank 4 is connected with a water outlet weir plate 2b of an aeration tank 2 through the left tank wall 4a, the upper end part of the left tank wall 4a is lower than the upper end part of the water outlet weir plate 2b, a water outlet at the upper right part of the right tank wall 4d is connected with a water discharge pipe through a water discharge valve 4e, and a sand discharge port at the bottom of the sedimentation tank sand collecting groove 4c is connected with the second sand discharge pipe 6b through the second sand discharge valve 6a and the second sand suction pump 6. A sand-water separator 7 is arranged right below the sand outlets of the first sand discharge pipe 5b and the second sand discharge pipe 6 b.

The working process of the sewage treatment sand settling device is as follows: after the water inlet valve 1a is opened, the water inlet pump 1 is opened, sewage to be treated in a sewage treatment plant is conveyed to the interior of the aeration tank 2 through the water inlet pipe by the water inlet pump 1, when the water outlet weir plate 2b of the aeration tank 2 is about to overflow, the fan 3 is opened, aeration generated by the fan 3 is conveyed to an aeration pipe network 2d at the bottom of the aeration tank 2 through the air inlet pipe, and organic matters on sand grains are separated from sand grains under the combined action of shearing force and friction force. After the aeration lasts for 10min, after the first sand discharging valve 5a is opened, the first sand suction pump 5 is opened, the deposited sand particles in the aeration tank sand collecting groove 2c are sucked into the sand-water separator 7 through the first sand suction pipe 5b, and then the sand-water separator 7 is opened to separate the sand from the water. When the liquid level in the sedimentation tank 4 rises to the 1/2 effluent liquid level, the drain valve 4e is opened, after the sedimentation tank 4 begins to produce water, the second sand discharge valve 6a is opened first, then the second sand suction pump 6 is opened, and the sediment sand particles in the sediment collection tank 4c of the sedimentation tank are sucked into the sand-water separator 7 through the second sand suction pipe 6b for sand-water separation. The sewage containing organic substances flows into the next process section of the sewage plant through the drain pipe.

Claims

1. A sewage treatment sand settling device comprises a water inlet pump (1) and a sand-water separator (7), and is characterized by further comprising an aeration device and a sedimentation device, wherein the aeration device comprises an aeration tank (2), a fan (3) and a first sand suction pump (5), the aeration tank (2) adopts a water inlet weir plate (2 a) higher than a water outlet weir plate (2 b), the bottom of the aeration tank (2) is provided with a recessed tank-type structure of an aeration tank sand collecting groove (2 c), the water inlet pump (1) is connected with a water inlet at the upper left part of the water inlet weir plate (2 a) through a water inlet valve (1 a), a sand discharging port at the bottom of the aeration tank sand collecting groove (2 c) is connected with a first sand discharging pipe (5 b) through a first sand discharging valve (5 a) and the first sand suction pump (5), and the fan (3) is connected with an aeration pipe network (2 d) at the bottom of the aeration tank (2) through an air inlet pipe;

the sedimentation device comprises a sedimentation tank (4), a second sand suction pump (6) and a second sand discharge pipe (6 b), wherein the sedimentation tank (4) adopts a tank type structure which is sequentially connected with a left tank wall (4 a), a tank bottom wall (4 b) which is inclined towards the lower right, a downward sedimentation tank sand collecting groove (4 c) and a right tank wall (4 d), the sedimentation tank (4) is connected with a water outlet weir plate (2 b) of the aeration tank (2) through the left tank wall (4 a), the upper end part of the left tank wall (4 a) is lower than the upper end part of the water outlet weir plate (2 b), a water outlet at the upper right part of the right tank wall (4 d) is connected with a water discharge pipe through a water discharge valve (4 e), and a sand discharge port at the bottom of the sedimentation tank sand collecting groove (4 c) is connected with the second sand discharge pipe (6 b) through the second sand discharge valve (6 a) and the second sand suction pump (6);

and a sand-water separator (7) is arranged under the sand outlets of the first sand discharge pipe (5 b) and the second sand discharge pipe (6 b).