CN202968186U

CN202968186U - Dissolved air floatation type sewage treatment device

Info

Publication number: CN202968186U
Application number: CN 201220673745
Authority: CN
Inventors: 周继伟; 周桂生; 梁中麟
Original assignee: SHANGHAI BAIFENG ENVIRONMENTAL ENGINEERING Co Ltd
Current assignee: SHANGHAI BAIFENG ENVIRONMENTAL ENGINEERING Co Ltd
Priority date: 2012-12-10
Filing date: 2012-12-10
Publication date: 2013-06-05
Anticipated expiration: 2022-12-10

Abstract

The utility model provides a dissolved air floatation type sewage treatment device and relates to the technical field of sewage treatment, aiming at solving the technical problems of improving purification effect, increasing clear water yield and prolonging a sludge cleaning period. The dissolved air floatation type sewage treatment device comprises a material tank, a dissolved air tank, a sewage pump, an air compressor and a floatation treatment tank, wherein a water inlet of the sewage pump is respectively connected to an external sewage source and the material tank, a water outlet of the sewage pump and a high-pressure air output port of the air compressor are respectively connected to a sewage inlet of the dissolved air tank, the cavity of the floatation treatment tank is divided into two sub-cavities by a baffle plate, the tops of the two sub-cavities are communicated, the two sub-cavities are respectively a water inlet cavity and a mud-water separation cavity, the water inlet cavity is divided into an upper subarea and a lower subarea by a packing layer, a sewage inlet of the water inlet cavity is arranged below the packing layer and is connected to a sewage outlet of the dissolved air tank through a water inlet valve, the mud-water separation cavity is divided into an upper subarea and a lower subarea by a mud separation layer, a mud separation groove is formed in the top of the mud-water separation cavity, and a water outlet lower than the mud separation layer is arranged on the wall of the mud-water separation cavity. The dissolved air floatation type sewage treatment device provided by the utility model is suitable for sewage treatment.

Description

Dissolved air floatation formula waste disposal plant

Technical field

The utility model relates to sewage disposal technology, particularly relates to a kind of technology of dissolved air floatation formula waste disposal plant.

Background technology

the dissolved air floatation technology is a kind of technology that adopts flotation process to dispose of sewage, this technology is except being in the oil of emulsified state for removal sewage, also be widely used in except the impurity of density in decontaminated water close to the fine suspended particle state of water, its principle is to manage to make a large amount of microbubble of generation in water, to form water, gas and be removed the three-phase mixture of material, in interfacial tension, under the acting in conjunction of the many kinds of forces such as bubble rising buoyancy and hydrostaticpressure are poor, after promoting that micro bubble sticks on removed minute impurities, because of adherend density less than floating to the water surface on water, thereby make the separated removal of impurity in water.

At present; when using dissolved air floatation technical finesse sewage; all that the sewage that will contain a large amount of bubbles and medicine directly injects the flotation treating pond; this processing mode exists following defective: 1) often can contain larger bubble in sewage; make water disturbance larger, and air pocket also easily breaks because of disturbance, its particle of sweeping along also can be soluble in water once again; make and be with the mud amount more in final outflow water, the water body purification effect is relatively poor.2) in the flotation treating pond, the disengaging zone between mud district and clear water zone is thicker, has affected the thickness of clear water zone, affects on the one hand the aquifer yield of clear water, and the cleaning cycle of pool bottom sludge is also shorter on the other hand.

The utility model content

For the defective that exists in above-mentioned prior art, it is effective that technical problem to be solved in the utility model is to provide a kind of water body purification, and the Graceful water yield is high, the dissolved air floatation formula waste disposal plant that the mud cleaning cycle is long.

In order to solve the problems of the technologies described above, a kind of dissolved air floatation formula waste disposal plant provided by the utility model comprises material pond, molten gas pond, sump pump, air compressor machine, flotation treating pond;

Described molten gas pond is the tank body of a sealing, and the top in molten gas pond is provided with a sewage inlet, and the bottom in molten gas pond is provided with sewage outlet, is provided with sewage draining exit at the bottom of the pond in molten gas pond;

The water-in of described sump pump is received outside source of sewage, and receives the material pond through a feed valves, and the water outlet of sump pump is received the sewage inlet in molten gas pond;

The high pressure gas delivery port of described air compressor machine is received the sewage inlet in molten gas pond through a pressure regulator valve;

It is characterized in that: the cell cavity of described flotation treating pond becomes two sub-chambeies, the first from left right side by a barrier partitions, one of them sub-chamber is intake antrum, another sub-chamber is the mud-water separation chamber, and the top in these two sub-chambeies is communicated with, and is equipped with sludge bucket at the bottom of the chamber in two sub-chambeies;

The intake antrum of described flotation treating pond is separated into two subregions one on the other by a permeable packing layer, the chamber wall of intake antrum is provided with a sewage inlet, this sewage inlet is positioned at below packing layer, and receive the sewage outlet in molten gas pond through a water intaking valve, described packing layer forms by a plurality of screen clothes are cross layered;

The mud-water separation chamber of described flotation treating pond is separated into two subregions one on the other by a permeable mud separating layer, the top in mud-water separation chamber is provided with every the mud groove, the chamber wall in mud-water separation chamber is provided with water outlet, described mud separating layer is lower than every the mud groove and higher than the water outlet on the wall of chamber, mud-water separation chamber, described bottom land every the mud groove is provided with mud discharging mouth.

the dissolved air floatation formula waste disposal plant that the utility model provides, utilize packing layer in flotation treating pond intake antrum to cut apart air pocket in water body, and the flow velocity of water body has been played shock absorption, thereby increased the stability of water body, reduced the disturbance of water body, and be provided with mud separating layer in the mud-water separation chamber of flotation treating pond, can be with the mud block in water body on top, mud-water separation chamber by mud separating layer, make a large amount of minimizing of mud that enters clear water zone, the thickness of clear water zone is also thicker, has water body purification effective, the Graceful water yield is high, the characteristics that the mud cleaning cycle is long.

Description of drawings

Fig. 1 is the structural representation of the dissolved air floatation formula waste disposal plant of the utility model embodiment.

Embodiment

Below in conjunction with description of drawings, embodiment of the present utility model is described in further detail, but the present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof all should be listed protection domain of the present utility model in.

As shown in Figure 1, a kind of dissolved air floatation formula waste disposal plant that the utility model embodiment provides comprises material pond 2, molten gas pond 3, sump pump 4, air compressor machine 5, flotation treating pond 10;

Described molten gas pond 3 is tank bodies of a sealing, and the top in molten gas pond 3 is provided with a sewage inlet, and the bottom in molten gas pond 3 is provided with sewage outlet, is provided with sewage draining exit at the bottom of the pond in molten gas pond 4, and this sewage draining exit is provided with the wash water valve that opens and closes for controlling this sewage draining exit;

The water-in of described sump pump 4 is received outside source of sewage 1, and receives material pond 2 through a feed valves, and the water outlet of sump pump 4 is received the sewage inlet in molten gas pond 3;

The high pressure gas delivery port of described air compressor machine 5 is received the sewage inlet in molten gas pond 3 through a pressure regulator valve;

It is characterized in that:

The cell cavity of described flotation treating pond becomes two sub-chambeies, the first from left right side by a barrier partitions, one of them sub-chamber is intake antrum 6, another sub-chamber is mud-water separation chamber 7, the top in these two sub-chambeies is communicated with, and be equipped with sludge bucket 8 at the bottom of the chamber in two sub-chambeies, the bottom of each sludge bucket 8 is equipped with mud valve;

The intake antrum 6 of described flotation treating pond 10 is separated into two subregions one on the other by a permeable packing layer 61, the chamber wall of intake antrum 61 is provided with a sewage inlet, this sewage inlet is positioned at packing layer 61 belows, and receive the sewage outlet in molten gas pond 3 through a water intaking valve, described packing layer 61 forms by a plurality of screen clothes are cross layered;

The mud-water separation chamber 7 of described flotation treating pond 10 is separated into two subregions one on the other by a permeable mud separating layer 73, the top in mud-water separation chamber 7 is provided with every mud groove 71, the chamber wall in mud-water separation chamber 7 is provided with water outlet, described mud separating layer is lower than every mud groove 71 and higher than the water outlet on the 7 chamber walls of mud-water separation chamber, described bottom land every mud groove 71 is provided with mud discharging mouth.

The principle of work of the utility model embodiment is as follows:

Sump pump pumps into molten gas pond with the water treatment spice in the treatment sewage of outside source of sewage and material pond, and air compressor machine injects high-pressure air to molten gas pond simultaneously, and sewage fully mixes with spice in molten gas pond, and is full of bubble;

be rich in spice, the sewage of bubble enters the intake antrum of flotation treating pond thereupon, and flow from bottom to top in the intake antrum of flotation treating pond, through packing layer the time, air pocket is divided into several small bubbles, make in the water body of subregion on intake antrum and be rich in small bubbles, and the buffering through packing layer, on intake antrum, the water disturbance of subregion is also very little, be rich in spice, recross the mud-water separation chamber that baffle plate enters the flotation treating pond after the sewage of bubble, in the mud-water separation chamber, under the buoyancy of the block of mud separating layer and bubble, suspended particle in sewage is by the upper subregion of block in the mud-water separation chamber, and swept along the large alumen ustum of rear formation to float on the surface by bubble, by regularly scrape into the mud-water separation top of chamber every the mud groove, see through few mud that primary water that mud separating layer enters subregion under the mud-water separation chamber is mingled with and be lowered into sludge bucket in action of gravity, the clear water that stays is discharged by the water outlet on the wall of chamber, mud-water separation chamber,

Mud in the mud groove and the mud in sludge bucket are by the valve periodic cleaning.

Claims

1. dissolved air floatation formula waste disposal plant comprises material pond, molten gas pond, sump pump, air compressor machine, flotation treating pond;