CN115677130A - Floating and sinking type water purification system and water purification method - Google Patents

Abstract

The invention discloses a floating and sinking type water purification system and a water purification method, wherein the water purification system comprises a water treatment tank, a floc flocculation area, a sedimentation area and a filtration area are arranged in the tank body, a flocculation reaction device is arranged in the floc flocculation area, a sedimentation device is arranged in the sedimentation area, a sludge collecting hopper is arranged below the flocculation reaction device and the sedimentation device, a sludge discharge pipe is arranged in the sludge collecting hopper, a gas release area, an air flotation transition area and a floating and sinking area are sequentially arranged between the floc flocculation area and the sedimentation area, a gas source is arranged outside the tank body, a gas pipeline is arranged in the gas release area, one end of the gas pipeline is connected with the gas source, the other end of the gas pipeline is connected with a dissolved gas releaser, the floating and sinking area is provided with a slag overflow weir, the slag overflow weir is connected with a slag discharge channel, and the slag discharge channel is connected with the slag discharge pipe. Through set up dissolved air releaser in the water treatment pond, to a large amount of micro-bubbles of aquatic release, half suspension and suspended particles in the aquatic adhere on the bubble, float to the surface of water along with the bubble and form the dross and be discharged, reach the purpose of getting rid of aquatic suspended solid, water purification.

Description

Floating and sinking type water purification system and water purification method

Technical Field

The invention belongs to the field of environmental protection water supply and drainage, and particularly relates to a floating and sinking type water purification system and a water purification method.

Background

At present, the conventional treatment of a water treatment plant adopts a three-stage process of flocculation, precipitation and filtration, and the process has a good water treatment effect. However, when the source raw water contains more substances such as algae, colloid components, fiber substances and the like, the precipitation and separation are difficult, and the low-temperature low turbidity or the high algae high turbidity caused by the influence of air temperature and various pollutions and the source raw water are suddenly changed, the problems of function attenuation, treatment capacity reduction, even blockage, production stop accidents and the like are brought to the operation of a water treatment plant, and the current reaction flocculation and precipitation separation process flow cannot cope with the change of the complex source raw water.

Disclosure of Invention

The invention aims to provide a floating-sinking type water purification system and a water purification method, wherein a dissolved air releaser is arranged in a water treatment tank to release a large number of micro bubbles into water, semi-suspended and suspended particles in the water are adhered to the bubbles, and float to the water surface along with the bubbles to form floating slag, the floating slag overflows a slag overflow weir, enters a slag discharge channel and is discharged through a slag discharge pipe, so that the purposes of removing suspended matters in the water and purifying the water quality are achieved.

The technical scheme adopted by the invention for solving the technical problem is as follows:

the invention provides a floating and sinking type water purification system which comprises a water treatment tank, wherein a tank body comprises a floc flocculation area, a sedimentation area and a filtration area, a flocculation reaction device is arranged in the floc flocculation area, a sedimentation device is arranged in the sedimentation area, a sludge collecting hopper is arranged below the flocculation reaction device and the sedimentation device, a sludge discharge pipe is arranged in the sludge collecting hopper, a gas release area, an air flotation transition area and a floating and sinking area are sequentially arranged between the floc flocculation area and the sedimentation area, a gas source is arranged outside the tank body, a gas pipeline is arranged in the gas release area, one end of the gas pipeline is connected with the gas source, the other end of the gas pipeline is connected with a dissolved gas releaser, the floating and sinking area is provided with a slag overflow weir, the slag overflow weir is connected with a slag discharge channel, and the slag discharge channel is connected with the slag discharge pipe.

Preferably, the air source is a blower or an air compressor.

Preferably, a sludge collecting hopper is arranged below the gas release area, the air floatation transition area and the floating-sinking area, and a sludge discharge pipe is arranged in the sludge collecting hopper.

Preferably, gas pipeline includes trunk line and small transfer line, and the trunk line vertically sets up in gaseous release district top, and the small transfer line sets up a plurality of along the vertical downwards of trunk line direction, and dissolved gas releaser installs in the small transfer line bottom.

Preferably, the branch ducts are arranged equidistantly.

Preferably, the dissolved air releaser is near the bottom of the tank.

The invention also provides a floating and sinking type water purification method, which comprises the following steps:

step 1: the method comprises the following steps that water source raw water enters a mixer, medicine is added into the mixer, the water source raw water mixed with the medicine enters a pool floc flocculation area, flocculation reaction is carried out under the action of a flocculation reaction device to form flocs, heavy flocs settle and are gathered in a mud collecting hopper, the flocs are discharged through a mud discharging pipe, and suspended particle flocs enter a gas release area;

step 2: releasing bubbles to the gas release area by using a dissolved gas releaser, and enabling suspended particle flocs to adhere to the bubbles and enter an air floatation transition area;

and step 3: the bubbles adhered with the suspended particle flocs are converged in the air flotation transition area and enter the floating-sinking area;

and 4, step 4: floating the light suspended particle floc in the floating and sinking area to form a scum layer, raising the water level of the pool body when the light suspended particle floc floats to a certain thickness, so that the scum layer overflows the scum weir, enters a slag discharge channel and is discharged through a slag discharge pipe;

and 5: the heavier suspended particle flocs enter a settling area, settle under the action of a settling device, and sludge settles to a sludge collecting hopper and is discharged through a sludge discharge pipe.

Has the advantages that:

1. the floating and sinking type water purification system is characterized in that the dissolved air releaser is arranged in the water treatment tank, the dissolved air releaser releases a large amount of micro bubbles into water, semi-suspended and suspended particles in the water are adhered to the bubbles, floating slag is formed by floating the bubbles to the water surface and overflows the slag overflow weir, enters the slag discharge channel and is discharged through the slag discharge pipe, the purposes of removing suspended matters in the water and purifying the water quality are achieved, the problem of difficulty in processing complex water source raw water in the past is solved, the complex water source raw water in the difficult is effectively and efficiently processed, and the problem that the traditional water treatment technology is difficult to deal with is solved.

2. By utilizing the floating and sinking type water purification system and the water purification method, the quality and the quantity of the effluent water after the raw water of the difficult and complicated water source is treated can be greatly improved, and meanwhile, the operation and maintenance cost and the treatment cost can be greatly reduced.

3. The floating and sinking type water purification system can run in a floating and sinking dual-function mode, belongs to an integrated design structure, occupies less than 50% of the traditional water treatment facility, solves the problems of large land occupation and high investment cost of the traditional water treatment facility, and has the advantages of greatly saving land resources, saving investment, protecting the environment and the like.

Drawings

Fig. 1 is a plan view of a water treatment tank.

Fig. 2 isbase:Sub>A cross-sectional view of the water treatment tank in fig. 1 inbase:Sub>A direction ofbase:Sub>A-base:Sub>A.

Fig. 3 is a cross-sectional view of a portion of a water treatment basin.

The labels in the figure are: the device comprises a tank body 1, a floc flocculation area 11, a gas release area 12, an air flotation transition area 13, a floating and sinking area 14, a sedimentation area 15, a filtration area 16, a flocculation reaction device 111, a sedimentation device 151, a sludge collecting hopper 21, a sludge discharge pipe 22, a gas source 31, a main pipeline 321, a branch pipeline 322, a dissolved gas releaser 33, a slag overflow weir 41, a slag discharge channel 42 and a slag discharge pipe 43.

Detailed Description

The present invention will be further described with reference to the structures or terms used herein. The description is given for the sake of example only, to illustrate how the invention may be implemented, and does not constitute any limitation on the invention.

The invention is further described with reference to the following figures and detailed description. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", and "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience of description and simplification of description, but do not indicate or imply that the positions or elements referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "fixed" and the like are to be understood broadly, and for example, "fixed" may be fixedly connected, detachably connected, or integrated; either directly or indirectly through intervening media, or may be interconnected between two elements or in a relationship wherein the two elements interact, unless expressly limited otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

The invention provides a floating and sinking type water purification system which comprises a water treatment tank 1, wherein a floc flocculation area 11, a sedimentation area 15 and a filtration area 16 are arranged in the tank body, a flocculation reaction device 111 is arranged in the floc flocculation area 11, a sedimentation device 151 is arranged in the sedimentation area 15, a sludge collecting hopper 21 is arranged below the flocculation reaction device 111 and the sedimentation device 151, a sludge discharge pipe 22 is arranged in the sludge collecting hopper 21, a gas release area 12, an air flotation transition area 13 and a floating and sinking area 14 are sequentially arranged between the floc flocculation area 11 and the sedimentation area 15, a gas source 31 is arranged outside the tank body, a gas pipeline is arranged in the gas release area 12, one end of the gas pipeline is connected with the gas source 31, the other end of the gas pipeline is connected with a dissolved gas releaser 33, the floating and sinking area 14 is provided with a slag overflow weir 41, the slag overflow weir 41 is connected with a slag discharge channel 42, and the slag discharge channel 42 is connected with a slag discharge pipe 43.

Wherein, the flocculation reaction device includes but is not limited to a grid reactor, a vortex flow reactor, a folded plate reactor and the like, and the sedimentation device includes but is not limited to an inclined tube, an inclined plate, a shunting inclined plate and the like.

In one embodiment, the gas source 31 is a blower or an air compressor, and a gas such as air is introduced.

As a specific embodiment, a sludge collecting hopper 21 is arranged below the gas release area 12, the air flotation transition area 13 and the floating-sinking area 14, and a sludge discharge pipe 22 is arranged in the sludge collecting hopper 21. Each area has the function of floc settlement, accumulation and discharge, and prevents sludge from accumulating in any area and influencing the water purification effect.

As a specific implementation mode, the gas pipeline comprises a main pipeline 321 and branch pipelines 322, the main pipeline 321 is longitudinally arranged above the gas release area 12, the branch pipelines 322 are vertically arranged downwards along the direction of the main pipeline 321, and the dissolved gas releaser 33 is arranged at the bottom of the branch pipelines 322. The branch pipes 322 are not limited in number, and may be arranged equidistantly or unequally. As a specific embodiment, the length of the main pipe 321 covers the width of the tank body, so that large-area distribution of bubbles is ensured.

As a specific embodiment, the dissolved air releaser 33 is close to the bottom of the tank body. In this way, the released large number of fine bubbles move upward from the bottom of the tank, and most of the suspended and semi-suspended particulate matter can be adhered.

The invention also provides a floating and sinking type water purification method, which comprises the following steps:

step 1: the method comprises the following steps that water source raw water enters a mixer, medicine is added into the mixer, the water source raw water mixed with the medicine enters a pool floc flocculation area, flocculation reaction is carried out under the action of a flocculation reaction device to form flocs, heavy flocs settle and are gathered in a mud collecting hopper, the flocs are discharged through a mud discharging pipe, and semi-suspended and suspended particle flocs enter a gas release area;

and 2, step: releasing bubbles to the gas release area by using a dissolved gas releaser, adhering semi-suspended and suspended particle flocs on the bubbles, and entering a gas floating transition area;

and step 3: the air bubbles adhered with the semi-suspended and suspended particle flocs are converged in the air floatation transition area and enter the floating-sinking area;

and 4, step 4: floating the light suspended particle floc in the floating and sinking area to form a scum layer, raising the water level of the pool body when the light suspended particle floc floats to a certain thickness, so that the scum layer overflows the scum weir, enters a slag discharge channel and is discharged through a slag discharge pipe;

and 5: the heavier suspended particle flocs enter a settling area, settle under the action of a settling device, and the sludge settles to a sludge collecting hopper and is discharged through a sludge discharge pipe.

The water purification process flow of the invention is as follows:

water source raw water enters a water inlet pipeline- 'by pump pressure or gravity flow, the raw water is mixed in a mixer, then the raw water enters a pool body-' enters a flocculation reaction device for flocculation reaction- 'enters a precipitation device for precipitation of suspended particles-' precipitated granular sludge slides into a sludge collection hopper- 'enters a sludge discharge pipe, the precipitated water enters a filtration area for filtration-' and then is discharged to a finished product water clear water pool through a water outlet.

When the water source raw water contains more substances such as algae, colloid components, fiber substances and the like, is difficult to precipitate and separate, and is low-temperature and low-turbidity or high-algae and high-turbidity caused by temperature influence and various pollutions, and the water source raw water is suddenly changed, and the reaction flocculation and precipitation separation process cannot deal with the change of the purification treatment of the complex water source raw water, the floating and sinking type water purification system can be started in time: pressing a pressure air source into a gas pipeline- ' entering a gas release area, utilizing a dissolved air releaser to release a large amount of micro-bubbles in a water body to be continuously mixed with the water body, mixing the water body into an air-water emulsion, enabling a large amount of micro-bubbles to be adhered to a suspension and semi-suspension particle floc which is difficult to settle and suspended in the water body to enter an air flotation transition area under the adhesion action of the plurality of micro-bubbles, converging in the air flotation transition area- ' enabling suspended particle impurities in the water body to be lifted out of the water surface along with a plurality of micro-bubble groups, implementing the separation of floating and settling in the floating and sinking area- ' attribute light suspended matters to gradually form a scum layer, raising the water level in the pool when the scum layer floats to a certain thickness, and enabling the scum layer to float and overflow (or be scraped) and overflow weir- ' to enter a slag discharge channel- ' to enter a slag discharge pipe to be discharged;

the suspended particles with heavier specific gravity enter a precipitation device for precipitation and separation- > are precipitated to a mud collection hopper- > and are discharged by a mud discharge pipe;

the semi-finished product water body before filtration after the floating and sinking purification treatment enters a filtration area for filtration, and clear water is discharged to a finished product water clear water tank through a water outlet.

The water purification process disclosed by the invention has multiple functions of dosing and mixing, reaction flocculation, precipitation separation, scum overflow removal and sludge discharge.

The complex source raw water suitable for the invention includes but is not limited to: the raw water source comprises various algae, various colloidal impurities, various raw water sources which are low in temperature and turbidity and difficult to flocculate, and raw water sources of production and domestic sewage which are discharged from the industrial fields of textile, papermaking, printing and dyeing, brewing, pharmacy, slaughter, food, fiber and the like and are difficult to precipitate.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.

Claims (7)

1. The utility model provides a formula of sinking and floating water purification system, includes water treatment tank, includes floc flocculation district, settling zone, filtering area in the cell body, establishes flocculation reaction device in the floc flocculation district, establishes the sediment device in the settling zone, and flocculation reaction device and sediment device below set up the mud collection fill, arrange mud pipe, its characterized in that in the mud collection fill: gas release district, air supporting transition district and the floating zone of sinking are equipped with in proper order between floc flocculation district and the settling zone, and the cell body is equipped with the air supply outward, establishes the gas pipeline in the gas release district, and gas pipeline one end is connected the air supply, and the other end is connected and is dissolved the gas releaser, and the floating zone of sinking establishes the overflow sediment weir, and the sediment canal is connected to the overflow sediment weir and arranges the sediment canal, arranges the sediment canal and connects row sediment pipe.

2. The sink-float water purification system of claim 1, wherein: the air source is a blower or an air compressor.

3. The sink-float water purification system of claim 1, wherein: a sludge collecting hopper is arranged below the gas release area, the air floatation transition area and the floating-sinking area, and a sludge discharge pipe is arranged in the sludge collecting hopper.

4. The sink-float water purification system of claim 1, wherein: the gas pipeline comprises a main pipeline and a branch pipeline, the main pipeline is longitudinally arranged above the gas release area, the branch pipeline is vertically and downwards provided with a plurality of gas along the main pipeline, and the dissolved gas releaser is arranged at the bottom of the branch pipeline.

5. The sink-float water purification system of claim 4, wherein: the branch pipelines are arranged at equal intervals.

6. The sink-float water purification system of claim 1, wherein: the dissolved air releaser is close to the bottom of the tank body.

7. A method of sink-or-float water purification according to any of claims 1-6, characterized in that: the method comprises the following steps:

step 1: the method comprises the following steps of (1) enabling water source raw water to enter a mixer, adding medicines into the mixer, enabling the water source raw water mixed with the medicines to enter a pool floc flocculation area, carrying out flocculation reaction under the action of a flocculation reaction device to form flocs, settling and converging heavy flocs in a sludge collecting hopper, discharging the flocs through a sludge discharge pipe, and enabling suspended particle flocs to enter a gas release area;

and 2, step: releasing bubbles to the gas release area by using a dissolved gas releaser, and enabling suspended particle flocs to adhere to the bubbles and enter an air floatation transition area;

and step 3: the bubbles adhered with the suspended particle flocs are converged in the air flotation transition area and enter the floating-sinking area;

and 4, step 4: floating the light suspended particle floc in the floating and sinking area to form a scum layer, raising the water level of the pool body when the light suspended particle floc floats to a certain thickness, so that the scum layer overflows the scum weir, enters a slag discharge channel and is discharged through a slag discharge pipe;

and 5: the heavier suspended particle flocs enter a settling area, settle under the action of a settling device, and sludge settles to a sludge collecting hopper and is discharged through a sludge discharge pipe.

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