CN102745803A

CN102745803A - Deep well aeration device

Info

Publication number: CN102745803A
Application number: CN201210244816XA
Authority: CN
Inventors: 张新华; 张若煜
Original assignee: University of Shaoxing
Current assignee: University of Shaoxing
Priority date: 2012-07-16
Filing date: 2012-07-16
Publication date: 2012-10-24

Abstract

The invention discloses a deep well aeration device, and belongs to the field of biological treatment technology of wastewater or sewage. The deep wall aeration device comprises a deep well barrel body, top grooves, falling pipes and lifting pipes, and is characterized by further comprising a deaerating tank which is communicated with the top grooves, wherein the top grooves are provided with not less than two side internal circulating channels; the channels are communicated with the lifting pipes; the lifting pipes are positioned between the falling pipes and the deep well barrel body, and blowout control plates are arranged on the tops of the falling pipes; efficient gas-liquid turbulators are arranged at the parts of 1/2 to 1/3 of the falling pipes; the falling pipes and the deep well barrel body have structures of concentric circles; and the deep well barrel body has a 'U' shaped structure. The deep well aeration device disclosed by the invention can be applied to processing the sewage from printing and dyeing mills and chemical plant; and the deep well aeration device has the advantages of high oxygen utilization rate, good effect on processing, low output of sludge, low cost of operation, safety, and reliability, etc.

Description

The deep well aeration device

Technical field

The present invention provides the deep well aeration device, belongs to the biologic treating technique field of waste water or sewage.

Background technology

Whole nation dyeing waste water quantity discharged is about 300～40,000,000,000 tons; Not only quantity discharged is big, and colourity and pollution level are high, and along with the application of fiber product, slurry, dyestuff, washing composition, chemical assistant and finishing composition etc.; The waste water composition constantly changes, and the difficulty of processing is also just bigger.Having launched a series of research work in recent years both at home and abroad, mainly is to start with from physics method, chemical method and biological process three aspects.The physico-chemical process treatment of dyeing and printing is more effective, but the processing costs of physico-chemical process ubiquity is high, can produce problems such as a large amount of unmanageable mud.The deep well aeration method is one of biological method commonly used of disposing of sewage, and this method is utilized the degree of depth of well, improves hydrostaticpressure; Thereby the raising dissolved oxygen concentration makes the aerobic microbiological in the active sludge decompose pollutants in sewage matter, but in the method that adopts at present; The air content of the mixing liquid after aeration is handled is still very high, and the gas adsorption on the active sludge is too much, and sludge settling is poor; Bubble through the water column to go up with gas and lose, mud can't be precipitated in the secondary pond, so not only influence effluent quality with current; And make that activated sludge concentration constantly reduces in the aeration well mixed solution, when serious even can destroy whole biochemical treatment system.

Have based on this, make the present invention and propose to solve the practicable technical scheme of this problem.

Summary of the invention

The purpose of this invention is to provide the deep well aeration device that a kind of coefficient of oxygen utilization is high, treatment effect is good, sludge yield is few, working cost is low, safe and reliable.

For realizing the object of the invention, the technical scheme of taking is following:

The deep well aeration device comprises deep-well cylindrical shell, inverted draw cut, downtake and upcast, it is characterized in that: also be provided with degassing pond; Degassing pond is communicated with inverted draw cut, and inverted draw cut is provided with the side inner cycle channel, and this passage is communicated with upcast; Upcast is between downtake and deep-well cylindrical shell, and the top of downtake is provided with the blowout prevention plate, and the 1/2-1/3 place of downtake is provided with the high efficient gas and liquid turbulator; Downtake and deep-well cylindrical shell are concentric structure, and the deep-well cylindrical shell is " U " type structure.

For obtaining result of use better, the present invention further is provided with as follows:

The quantity of described side inner cycle channel >=2.

Principle of work of the present invention and beneficial effect are following:

The deep-well cylindrical shell is " U " type structure, and downtake and cylindrical shell are concentric structure, and the top of downtake is provided with the blowout prevention plate, and waste water and returned sluge are gone into through the blowout prevention plate current, can stop blowout; The downtake lower end extends to the bottom of cylindrical shell; Waste water after the processing refluxes to channel cycle in side, after the degassing of degassing pond, flows to other treatment facility places; The present invention has effectively prolonged waste water and the returned sluge residence time at inverted draw cut; Be beneficial to and cut down the consumption of energy, be beneficial to and cut down the consumption of energy, improve decontamination effect improving; The gas-liquid turbulator that is provided with on the downtake; Reduce aeration and handled air content in the mixing liquid of back; Avoid the too much air of absorption on the active sludge, the water after making active sludge and handling is well separated, the further degassing in degassing pond; Improved effluent quality, mud is precipitated in the secondary pond more easily.

Description of drawings

Fig. 1 is the structural representation of deep well aeration device of the present invention.

Label among the figure: 1, deep-well cylindrical shell; 2, downtake; 3, upcast; 4, side direction interior passageway; 5, high efficient gas and liquid turbulator; 6, blowout prevention plate; 7, inverted draw cut; 8, degassing pond.

Embodiment

Fig. 1 deep well aeration device of the present invention comprises deep-well cylindrical shell 1, downtake 2, upcast 3 and inverted draw cut 7, and the degassing pond 8 that is communicated with inverted draw cut 7; Deep-well cylindrical shell 1 is " U " type structure; Deep-well cylindrical shell 1 is a concentric structure with downtake 2, and inverted draw cut 7 is positioned at deep-well cylindrical shell 1 top, and inverted draw cut 7 is provided with side inner cycle channel 4; Side inner cycle channel 4 is communicated with upcast 3; Upcast 3 is between deep-well cylindrical shell 1 and downtake 2, and the top of downtake 2 is provided with

blowout prevention plate

6, and 1/2 place of downtake 2 is provided with high efficient gas and liquid turbulator 5.

The blowout prevention plate 6 that the top of downtake 2 is provided with, waste water and returned sluge get into downtake 2 through blowout prevention plate 6, can stop the blowout of waste water and returned sluge, and be safe and reliable; Downtake 2 lower ends extend to the bottom of deep-well cylindrical shell 1, the waste water after the processing in side to passage 4 pump around circuits, after the degassing of degassing pond 8; Flow to other treatment facility places; The present invention has effectively prolonged waste water and returned sluge in the residence time of inverted draw cut 7, is beneficial to cut down the consumption of energy, and improves decontamination effect improving; According to the waste water of handling and the situation of returned sluge, all can in the quantity of side inner cycle channel 4 >=2; The gas-liquid turbulator 5 that is provided with on the downtake 2; Reduce aeration and handled air content in the mixing liquid of back; Avoid the too much air of absorption on the active sludge, the water after making active sludge and handling is well separated, the further degassing in degassing pond 8; Improved effluent quality, mud is precipitated in subsequent disposal more easily.

Claims

1. deep well aeration device; Comprise deep-well cylindrical shell, inverted draw cut, downtake and upcast, it is characterized in that: also be provided with degassing pond, degassing pond is communicated with inverted draw cut; Inverted draw cut is provided with the side inner cycle channel; Upcast is between downtake and deep-well cylindrical shell, and upcast is communicated with the side inner cycle channel, and the deep-well cylindrical shell is " U " type structure.

2. deep well aeration device according to claim 1 is characterized in that: the quantity of described side inner cycle channel >=2.

3. deep well aeration device according to claim 1 is characterized in that: described downtake and deep-well cylindrical shell are concentric structure.

4. deep well aeration device according to claim 1 is characterized in that: the 1/2-1/3 place of described downtake is provided with the high efficient gas and liquid turbulator.

5. deep well aeration device according to claim 1 is characterized in that: the top of described downtake is provided with the blowout prevention plate.