CN211999318U - Electric flocculation-air flotation integrated system - Google Patents

Abstract

An electric flocculation-air flotation integrated system comprises an adjusting tank, an electric flocculation-air flotation mechanism and a water production tank which are sequentially connected, wherein the upper part of the electric flocculation-air flotation mechanism is connected with an ozone generation mechanism, the lower part of the electric flocculation-air flotation mechanism is connected with a sludge treatment mechanism, the ozone generation mechanism comprises an ozone generator, a buffer tank and a gas-liquid mixing pump for connecting the ozone generator and the buffer tank, the sludge treatment mechanism comprises a plate-and-frame filter press, a sludge tank and a pneumatic diaphragm pump for connecting the sludge tank and the plate-and-frame filter press, and a booster pump is connected between the adjusting tank and the electric flocculation-air flotation mechanism. The utility model discloses an ozone bubble and the contact adhesion of pollutant and to the oxidation process of pollutant, when finally accomplishing the air supporting separation to sewage air supporting separation, detach aquatic look, smell, taste, bacterium etc. the energy consumption is little, and the treatment cost is low.

Description

Electric flocculation-air flotation integrated system

Technical Field

The utility model relates to the technical field of wastewater treatment equipment, in particular to an electric flocculation-air flotation integrated system.

Background

The electric flocculation process is researched in six seventies in the last century in China. Over the last two decades, domestic research units and industrial enterprises have conducted a great deal of research on electric flocculation processes. These studies cover a large portion of the intractable industrial effluents like electroplating, oil-containing, printing and dyeing. Conventional electric flocculation is a water treatment process for removing pollutants in water by flocculation of metal hydroxides generated by soluble metal anodes during electrolysis. The ferrous hydroxide precipitate generated by electrolysis has good flocculation and adsorption performances, and can effectively remove pollutants from sewage. Meanwhile, hydrogen gas separated out from the cathode during electrolysis can form a large amount of tiny bubbles, and the air flotation separation effect is good. The solid-liquid separation technology is an indispensable link in water treatment, and the air flotation is a common solid-liquid separation technology for removing light pollutants in water. The common air floatation method is a pressurized dissolved air floatation method, and the treatment device consists of an air compressor, a pressurized dissolved air tank, a decompression release device, an air floatation tank, a mechanical slag scraping device and a slag discharging device, and has the advantages of complex structure, long treatment mode flow, large energy consumption, high construction cost and treatment cost. In addition, the air supporting processing unit usually only accomplishes solid-liquid separation, to organic pollutant and colour in aqueous, smell, taste, getting rid of bacterium etc. must attach leading preliminary treatment equipment or rearmounted advanced treatment equipment, on prior art basis, a novel air supporting device is provided, replace the air as dissolving the gas source with ozone, utilize the dissolved air pump to inhale ozone, inside release in the separator produces even ozone microbubble, realize ozone bubble and the contact adhesion of pollutant and the oxidation process to the pollutant, when finally accomplishing the air supporting separation to sewage air supporting separation, detach aquatic colour, smell, taste, bacterium etc..

Disclosure of Invention

The utility model aims at providing an electric flocculation-air supporting integrated system, the utility model solves the problems of complicated structure, long process, large energy consumption, high construction cost and high processing cost of the existing electric flocculation air supporting system.

The technical solution of the utility model is that: the electric flocculation-air floatation integrated system comprises an adjusting tank, an electric flocculation-air floatation mechanism and a water production tank which are sequentially connected, wherein the upper part of the electric flocculation-air floatation mechanism is connected with an ozone generation mechanism, the lower part of the electric flocculation-air floatation mechanism is connected with a sludge treatment mechanism, the ozone generation mechanism comprises an ozone generator, a buffer tank and a gas-liquid mixing pump for connecting the ozone generator and the buffer tank, the sludge treatment mechanism comprises a plate-and-frame filter press, a sludge tank and a pneumatic diaphragm pump for connecting the sludge tank and the plate-and-frame filter press, and a booster pump is connected between the adjusting tank and the electric flocculation-air floatation mechanism.

As preferred, be equipped with electrolysis reaction district A, ozone air supporting district B, sedimentation separation district C, clear water district D in the electricity flocculation-air supporting mechanism in proper order, electrolysis reaction district A establishes electricity flocculation-air supporting mechanism front end, sedimentation separation district C establishes ozone air supporting separation district B's lower part, clear water district D establishes electricity flocculation-air supporting mechanism is terminal, the booster pump with be located the water distribution district of electrolysis reaction district A below is connected, and it is located reaction district A lower part to intake, and its purpose is to guarantee that sewage gets into the electrolysis district uniformly, prevents to take place the short current phenomenon, and ozone air supporting separation district is on the upper portion of electrolysis district, and the sewage that the electrolysis was accomplished upwards flows into the air supporting separation district. Ozone replaces air to be used as a dissolved air source, ozone is sucked by the dissolved air pump, uniform ozone micro bubbles are generated by releasing in the separator, the ozone bubbles are in contact adhesion with pollutants and the oxidation process of the pollutants is realized, and finally air floatation separation is completed. The ozone oxidation and the air flotation process are organically combined, so that the whole contact mixing and air flotation separation process is carried out in one device, a slag discharge port is arranged at the bottom of the device, slag discharge operation is carried out at regular time through an automatic control system, full-automatic closed slag discharge is realized by utilizing the regular rising and falling of the water level, and a precipitation separation area is arranged at the lower part of the ozone air flotation separation area and is used for precipitating and separating flocs and particles with higher density.

Preferably, the electrolytic reaction area A is composed of a plurality of metal electrodes which are arranged in parallel, the distance and the relative position of the plurality of metal electrodes are fixed by a fixing frame, a clamping groove is arranged on the fixing frame, and when the metal electrodes pass through direct current, the anode can be dissolved to generate a large amount of metal ions and further hydrolyzed to generate metal hydroxide flocs; and a large amount of micro bubbles can be separated out from the cathode, so that electrolytic flocculation and air floatation functions are realized, the electrode distance and the relative position are determined by the electrode fixing frames, the electrode clamping grooves are arranged on the electrode fixing frames, and the metal polar plates can be fixed by inserting into the electrode clamping grooves of the upper and lower electrode fixing frames.

Preferably, the bottom of the precipitation separation area C is provided with a mud collecting plate, and the cross section of the mud collecting plate is in an inverted trapezoid shape.

Preferably, the bottom of the mud collecting plate is provided with a mud discharging pipe, and when the sediment is accumulated to a certain thickness, the sediment automatically slides into the bottom of the pool and is discharged through the mud discharging pipe arranged at the bottom.

Preferably, the clear water area D is composed of an overflow weir, a water collection tank and a water discharge pipe, the front end of the clear water area D is provided with a baffle plate, the front end of the water outlet area is provided with a baffle plate to prevent scum from being discharged with water, sewage clarified by air floatation and precipitation separation flows into the water collection tank through the overflow weir, and is finally discharged by the water discharge pipe, and the depth of the baffle plate at the front end of the water outlet area extending below the water surface is proper and cannot be too shallow to prevent scum from being discharged with water driven by water flow.

The utility model has the advantages that:

compared with the prior art, the utility model discloses when using, replace the air as dissolving the gas source with ozone, utilize dissolved air pump to inhale ozone, produce even ozone microbubble in the inside release of electric flocculation-air supporting mechanism, realize ozone bubble and the contact adhesion of pollutant and to the oxidation process of pollutant, when finally accomplishing the air supporting separation to sewage air supporting separation, detach aquatic look, smell, taste, bacterium etc. the energy consumption is little, and the treatment cost is low.

Drawings

FIG. 1 is a schematic structural view of the present invention;

Detailed Description

The present invention will be further described with reference to the following embodiments in conjunction with the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

In an embodiment, as shown in fig. 1, an electrocoagulation-air flotation integrated system includes an adjusting tank 1, an electrocoagulation-air flotation mechanism 2 and a water production tank 3, which are connected in sequence, wherein an ozone generation mechanism 4 is connected to an upper portion of the electrocoagulation-air flotation mechanism 2, a sludge treatment mechanism 5 is connected to a lower portion of the electrocoagulation-air flotation mechanism 2, the ozone generation mechanism 4 includes an ozone generator 401, a buffer tank 402, and a gas-liquid mixing pump 403 connected to the ozone generator 401 and the buffer tank 402, the sludge treatment mechanism 5 includes a plate-and-frame filter press 501, a sludge tank 502, and a pneumatic diaphragm pump 503 connected to the sludge tank 502 and the plate-and-frame filter press 501, and a booster pump 6 is connected between the adjusting tank 1 and the electrocoagulation-air flotation mechanism 2.

Further, an electrolytic reaction area A, an ozone floating area B, a precipitation separation area C and a clear water area D are sequentially arranged in the electric flocculation-air flotation mechanism 2, the electrolytic reaction area A is arranged at the front end of the electric flocculation-air floatation mechanism 2, the precipitation separation area C is arranged at the lower part of the ozone air floatation separation area B, the clear water area D is arranged at the tail end of the electric flocculation-air floatation mechanism 2, the booster pump 6 is connected with the water distribution area 209 positioned below the electrolytic reaction area A, the sewage in the adjusting tank 1 enters the electric flocculation-air floatation mechanism 2 under the driving of the booster pump 6, the sewage enters the water distribution area 209 positioned at the lower part of the electrolytic reaction area A, the purpose is to ensure that sewage uniformly enters the electrolytic reaction area A and prevent short flow, and the precipitation separation area C is arranged at the lower part of the ozone floatation separation area B and is used for precipitating and separating flocs and particles with higher density.

Further, the electrolytic reaction area A is composed of a plurality of metal electrodes 201 which are arranged in parallel, the distance and the relative position of the plurality of metal electrodes 201 are fixed through a fixing frame 202, a clamping groove 203 is arranged on the fixing frame 202, when the electrodes pass through direct current, the anode can dissolve to generate a large amount of metal ions and further hydrolyze to generate metal hydroxide flocs, and the cathode can separate out a large amount of micro bubbles, so that the electrolytic flocculation and air flotation functions are realized.

Further, the electrode spacing and the relative position are fixed through a fixing frame 202, a clamping groove 203 is formed in the fixing frame 202, the metal pole plate can be fixed by inserting the metal pole plate into the clamping grooves 203 of the upper fixing frame 202 and the lower fixing frame 202, electrolyzed sewage flows upwards into an ozone air floatation separation area B, ozone is sucked by a gas-liquid mixing pump 403, uniform ozone micro bubbles are generated by releasing inside the electric flocculation-air floatation mechanism 2, the contact adhesion of the ozone micro bubbles and pollutants and the oxidation process of the pollutants are realized, and the air floatation separation is finally completed. The bottom of the device is provided with a slag discharge port, slag discharge operation is carried out at regular time through an automatic control system, and full-automatic closed slag discharge is realized by utilizing the regular lifting of the water level.

Further, the bottom of the sedimentation separation area C is provided with a sludge collecting plate 12, the section of the sludge collecting plate 204 is inverted trapezoid, the bottom of the sludge collecting plate 204 is provided with a sludge discharge pipe 205, when the sediment is accumulated to a certain thickness, the sediment can automatically slide into the bottom of the pool and is discharged through the sludge discharge pipe 205 arranged at the bottom,

furthermore, the clean water area D is composed of an overflow weir 206, a water collecting tank 207 and a water discharging pipe 208, the front end of the clean water area D is provided with a baffle 210, the existence of the baffle 210 can prevent scum from being discharged with water, sewage clarified by air floatation and sedimentation separation flows into the water collecting tank 207 through the overflow weir 206 and is finally discharged by the water discharging pipe 208, and the depth of the baffle 210 at the front end of the clean water area D extending into the water surface is proper and can not be too shallow, so that the scum is prevented from being driven by water flow to be discharged with water.

Claims (7)

1. An electric flocculation-air flotation integrated system is characterized in that: the device comprises an adjusting tank (1), an electric flocculation-air floatation mechanism (2) and a water production tank (3) which are sequentially connected, wherein the upper part of the electric flocculation-air floatation mechanism (2) is connected with an ozone generation mechanism (4), the lower part of the electric flocculation-air floatation mechanism (2) is connected with a sludge treatment mechanism (5), the ozone generation mechanism (4) comprises an ozone generator (401), a buffer tank (402) and a gas-liquid mixing pump (403) for connecting the ozone generator (401) and the buffer tank (402), the sludge treatment mechanism (5) comprises a plate-and-frame filter press (501), a sludge tank (502) and a pneumatic diaphragm pump (503) for connecting the sludge tank (502) and the plate-and-frame filter press (501), and a booster pump (6) is connected between the adjusting tank (1) and the electric flocculation-air floatation mechanism (2).

2. The integrated electroflocculation-flotation system as claimed in claim 1, wherein: an electrolytic reaction area A, an ozone air flotation area B, a precipitation separation area C and a clear water area D are sequentially arranged in the electric flocculation-air flotation mechanism (2), the electrolytic reaction area A is arranged at the front end of the electric flocculation-air flotation mechanism (2), the precipitation separation area C is arranged at the lower part of the ozone air flotation separation area B, and the clear water area D is arranged at the tail end of the electric flocculation-air flotation mechanism (2).

3. The integrated electroflocculation-flotation system as claimed in claim 2, wherein: the booster pump (6) is connected with a water distribution area (209) positioned below the electrolysis reaction area A.

4. The integrated electroflocculation-flotation system as claimed in claim 2, wherein: the electrolytic reaction area A is composed of a plurality of metal electrodes (201) which are arranged in parallel, the distance and the relative position of the plurality of metal electrodes (201) are fixed through a fixing frame (202), and a clamping groove (203) is arranged on the fixing frame (202).

5. The integrated electroflocculation-flotation system as claimed in claim 2, wherein: and a sludge collecting plate (204) is arranged at the bottom of the precipitation separation area C, and the section of the sludge collecting plate (204) is in an inverted trapezoid shape.

6. The integrated electroflocculation-flotation system as claimed in claim 5, wherein: and a sludge discharge pipe (205) is arranged at the bottom of the sludge collecting plate (204).

7. The integrated electroflocculation-flotation system as claimed in claim 2, wherein: the clean water area D is composed of an overflow weir (206), a water collecting tank (207) and a drain pipe (208), and the front end of the clean water area D is provided with a baffle (210).

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