CN201574100U

CN201574100U - Air weir type decanter

Info

Publication number: CN201574100U
Application number: CN2009202791365U
Authority: CN
Inventors: 徐时红; 戴明发; 姚能栋; 戴家旗
Original assignee: JIANGSU TIANHONG ENVIRONMENTAL ENGINEERING Co Ltd
Current assignee: JIANGSU TIANHONG ENVIRONMENTAL ENGINEERING Co Ltd
Priority date: 2009-11-13
Filing date: 2009-11-13
Publication date: 2010-09-08
Anticipated expiration: 2019-11-13

Abstract

An air weir type decanter, relates to a decanter in the SBR water treatment process. when the aeration is performed, the sewage can be prevented from flowing out through a water outlet weir. The air weir type decanter comprises a water outlet weir to an water outlet of a SBR, an air outer cover and a gas source, the air outer cover is inverted on the water outlet weir, a cavity is formed between the air outer cover and the water outlet weir, and the gas source is connected with the cavity by a pipeline with a control flap device. in the normal drain, the water level in the air outer cover is consistent to the water level in the SBR, and a supernatant in the SBR is discharged through the water outlet weir. when meeting the aeration treatment, before starting the aeration treatment, the high-pressure gas is filled into the cavity in the air outer cover, so that the water level in the outer cover is lower than the opening of the water outlet weir and simultaneously lower than the outside water level. in this way, even the billow is generated in the outside aeration, the water can not enter into the water outlet weir, after the water in the outside pool deposits, the pressure is relieved so that the air pressure in the cavity is consistent to the outside, the water level return to the original level to continuously perform the draining work.

Description

Air weir formula is strained hydrophone

Technical field

The utility model is mainly used in the precipitate phase in the modified version SBR water technology, strains hydrophone for getting rid of with the special use of supernatant liquor after active sludge separates.

Background technology

Modified version SBR water technology is in recent years in the newfangled technology of former SBR process modification, and this technology aquifer yield is big, the efficient height.The nearest domestic modified version SBR water technology that also come into vogue, but still not really ripe always for the design of support equipment.Be mainly reflected in and carry out aeration when handling to straining the pond, be difficult to the water outlet of effluent weir is controlled, may cause the muddy sewage of a part to be discharged by effluent weir, quality is handled in influence.

Summary of the invention

The utility model provides a kind of when carrying out aeration at above problem, can avoid sewage to strain hydrophone by the effusive air of effluent weir weir formula.

The technical solution of the utility model is: comprise being communicated to the effluent weir of straining pond outlet, it comprises air outer cover, source of the gas, described air outer cover tips upside down on the effluent weir, and form an airtight cavity between the effluent weir, described source of the gas links to each other with described cavity by the pipeline that has the by-pass valve control device.

Be provided with the whirlpool device of to relieve a garrison in the rising pipe of described effluent weir.

The utility model when normally straining water, the water level in the air outer cover with strain the pond in water level consistent, supernatant liquor is discharged by effluent weir in the pond.When running into aeration and handling, before starting aeration and handling, charge into high pressure gas in the cavity in the air outer cover earlier, make the water level in the outer cover be lower than the effluent weir crest of weir, the while also is lower than outside water level.Like this,, can not enter effluent weir even outside aeration produces the water wave yet, treat the water precipitation of outside pond after, release again makes in the cavity air pressure consistent with the outside, water level is returned to previous level, proceeds to strain the water operation.Transmission apparatus is made up of electrically operated valve and the blast main that is connected to aerating pipelines, and therefore cost simple in structure is few, easy to maintenance.And in operational process, only having used the small amount of compression air in the aerating pipelines as source of the gas, the power of unique use is the electrically operated valve in the pipeline in the equipment use, so device energy conservation, and is easy to operate.

Description of drawings

Fig. 1 is a structural representation of the present utility model

1 is to strain the pond among the figure, the 2nd, and air outer cover, the 3rd, water outlet, the 4th, source of the gas, the 40th, pipeline;

Fig. 2 is an A-A cutaway view Amplified image among Fig. 1

5 is effluent weirs among the figure, the 6th, and the whirlpool device of can relieving a garrison, the 7th, rising pipe, the 8th, cavity, the 9th, pool inner water position;

Fig. 3 is the utility model working state schematic representation when normally straining water

10 is water levels in the air outer cover among the figure.

Fig. 4 is the utility model working state schematic representation when stopping to strain water

Embodiment

The utility model is as shown in Figure 1, 2: comprise being communicated to the effluent weir 5 of straining pond 1 water outlet 3, it comprises air outer cover 2, source of the gas 4, described air outer cover 2 tips upside down on the effluent weir 5, and form an airtight cavity 8 between the effluent weir 5, described source of the gas 4 is connected with described cavity 8 by the pipeline 40 that has the by-pass valve control device.

Be provided with the whirlpool device 6 of to relieve a garrison in the rising pipe 7 of described effluent weir 5.

Principle of work of the present utility model is shown in Fig. 3,4.

Fig. 3 is the utility model working state schematic representation when normally straining water, and at this moment, the air pressure in the cavity 8 is with outside consistent, and water level 10 is consistent with pool inner water position 9 in the air outer cover, normally the supernatant liquor in the pond is passed through the crest of weir discharge of effluent weir 5.

Fig. 4 is the utility model working state schematic representation when stopping to strain water, at this moment, is about to carry out the aeration operation.At first source of the gas 4 charges into high pressure gas by pipeline 40 in cavity 8, makes water level 10 declines in the air outer cover, and the water outlet of effluent weir 5 is higher than water level 10 in the air outer cover.Water level 10 is lower than the outside pool inner water position 9 of cover in the air outer cover simultaneously.No matter how muddiness can not enter water outlet to outside sewage yet after by aeration.

The utility model should satisfy following requirement:

1) performance of water level continuous drainage: separate the limpid supernatant liquor in back for obtaining, air weir formula is strained the effluent weir of hydrophone should be near the water surface, and this equipment is permanent water level work, has the performance of continuous drainage.

2) function of quantitative draining: when air weir formula is strained hydrophone work, can not take scum silica frost and volume exhaust in accordance with regulations out of.

3) high reliability: air weir formula is strained hydrophone in draining or stop the in service of draining, orderly action should be correctly, steadily, safety, reliable, little, the long service life of power consumption.

Preferred implementation of the present utility model is as follows:

Air line: mainly form by air inlet, the vent valve of giving vent to anger, steel pipe etc.

Effluent weir: weir plate height tolerance (mm): ± 5; Weir plate adopts stainless steel 304 plates to make, and thickness is 2.5, and material should meet GB.

Air outer cover: guarantee during the airhood welding production to leak gas, smooth.Level during installation can not have gas leak phenomenon.Material adopts stainless steel.When assurance has air pressure enough strength and stiffness can be arranged.

Principle of work of the present utility model is: close the air inlet magnetic valve and open drain tap after aeration finishes to stay for some time, air pressure drops to normal pressure in the air weir, under the hydraulic pressure effect by outside, air weir, equipment begins to flow automatically the water outlet supernatant liquor from the surface discharge, and the scum silica frost on surface is trapped in the reaction tank effectively when closing exhaust solenoid valve, open air intake valve, just finish to strain water when pressure acquires a certain degree in the air weir automatically.Enter aeration this moment, as a little cycle operatioies.

Claims

1. air weir formula is strained hydrophone, comprise and be communicated to the effluent weir of straining pond outlet, it is characterized in that, it comprises air outer cover, source of the gas, described air outer cover tips upside down on the effluent weir, and form an airtight cavity between the effluent weir, described source of the gas links to each other with described cavity by the pipeline that has the by-pass valve control device.

2. air according to claim 1 weir formula is strained hydrophone, it is characterized in that, is provided with the whirlpool device of can relieving a garrison in the rising pipe of described effluent weir.