CN116081856A - Clean extraction equipment for organic matters in domestic sewage and treatment method thereof - Google Patents

Abstract

The invention relates to domestic sewage organic matter clean-extraction equipment and a treatment method thereof, wherein the domestic sewage organic matter clean-extraction equipment comprises a raw water tank, a medicine tank, a mixing tank, a flat filter-pressing tank, a steam floating tank and a waste collection tank, wherein the raw water tank and the medicine tank are communicated with the mixing tank, a first water outlet pipe is connected to the mixing tank, a first water outlet valve is arranged on the first water outlet pipe, the mixing tank and the flat filter-pressing tank are communicated through a feed pipe, a discharge port of the flat filter-pressing tank is opposite to a feed port of the steam floating tank, the medicine tank is also communicated with the steam floating tank, a second water outlet pipe is connected to the steam floating tank, a second water outlet valve is arranged on the second water outlet pipe, and the feed port of the waste collection tank is opposite to the discharge port of the steam floating tank. The organic matter clean extraction equipment of the technical scheme can greatly reduce the water content of the flocculated sediment after flocculation precipitation, ensures that the flocculated sediment is difficult to putrefy and stink after being discharged, further ensures that the environment is not polluted, and simultaneously can not breed infectious diseases.

Description

A device for net extraction of organic matter from domestic sewage and its treatment method

technical field

The invention relates to the technical field of domestic sewage treatment equipment, more specifically a domestic sewage organic matter net extraction equipment and its treatment method

Background technique

Domestic sewage is the wastewater discharged by residents in their daily life, mainly from residential buildings and public buildings, which also makes the main pollutants in domestic sewage are organic pollutants such as protein, carbohydrates, fat, urea, ammonia nitrogen, etc., and also contains A large number of pathogenic microorganisms, because the organic matter in the water body is extremely unstable, especially in a high temperature environment, it is easy to corrupt and produce stench. If domestic sewage is discharged directly, it will easily cause more serious water pollution, and even lead to the spread of infectious diseases. Therefore , domestic sewage must be strictly treated in accordance with standards before discharge.

Domestic sewage treatment equipment is a special equipment for domestic sewage treatment. Domestic sewage treatment equipment will first purify domestic sewage, and through physical and chemical treatment technology, that is, use flocculants to precipitate suspended solids in domestic sewage, as shown in the public number As shown in CN209778575U, the Chinese patent titled "Integrated Equipment for Treating High Concentration Organic Domestic Sewage", the treatment equipment recorded in it includes a cuboid-shaped general box, which is sequentially separated by partitions along its length in the general box. It is a regulating tank, anaerobic tank, anoxic tank, aerobic tank, secondary sedimentation tank, flocculation reaction tank and flocculation sedimentation tank; there is a filling mechanism in the anaerobic tank; an aeration mechanism is set in the aerobic tank, and the The nitrifying liquid is returned to the anoxic tank through the lift pump; the sludge in the secondary sedimentation tank is returned to the anaerobic tank, the anoxic tank and the external sludge collection tank through the sludge pump; an overflow is provided on the upper part of the flocculation sedimentation tank Weir, the main water outlet is set on the side wall of the flocculation sedimentation tank; the dosing mechanism is set outside the flocculation reaction tank, and the domestic sewage passes through the adjustment tank, anaerobic tank, anoxic tank, and well After the treatment of the oxygen tank and the secondary sedimentation tank, the supernatant after precipitation in the secondary sedimentation tank flows to the flocculation reaction tank through the water hole on the partition plate, and the PAC and PAM agents are added to the flocculation reaction tank through the dosing mechanism, and the mixture is stirred. The device makes the sewage and the chemical mix uniformly to carry out the flocculation reaction, and then flows to the flocculation sedimentation tank through the water hole on the partition plate for sedimentation. An overflow weir is set in the flocculation sedimentation tank, and the supernatant flows out through the overflow weir, and the treatment is completed. The effluent of the discharge standard is discharged from the main water outlet, and the settled sludge is discharged into the sludge collection tank through the second sludge pump.

However, the problem with the domestic sewage treatment equipment with the above structure is that the sewage flows into the flocculation sedimentation tank after flocculation reaction in the flocculation reaction tank for precipitation, and the supernatant after precipitation is discharged through the overflow weir, and the flocculation sediment is often full of water If the flocculated sediment is discharged directly to the outside, due to its extremely high water content, it is also prone to corruption and odor, which will pollute the surrounding environment, and the pathogenic microorganisms contained in the water may also cause the spread of infectious diseases Therefore, there is an urgent need to invent a domestic sewage organic matter net extraction equipment that can solve the above problems.

Contents of the invention

In view of the above situation, in order to overcome the domestic sewage treatment equipment in the prior art above, when the domestic sewage after the flocculation reflection is deposited, the flocculated sediment is full of water, so it is also prone to corruption and odor after being directly discharged, and then has a negative impact on the surrounding environment. The environment causes pollution, and the pathogenic microorganisms contained in the water may also cause the problem of the spread of infectious diseases. The purpose of the present invention is to provide a method that can greatly reduce the water content of the flocculation sediment after flocculation and sedimentation, and ensure that the flocculation sediment is discharged The domestic sewage organic matter net extraction equipment and its treatment method that are difficult to rot and stink in the end, ensure that the environment is not polluted, and will not breed infectious diseases.

In order to achieve the above object, the technical solution of the present invention is:

A device for net extraction of organic matter from domestic sewage, which includes a raw water tank, a medicine tank, a mixing tank, a flat filter press box, an air flotation tank, and a waste collection box. The mixing box is connected, the raw water pipe and the first liquid medicine pipe are respectively provided with a raw water pump and a first liquid medicine pump, and the medicine box is also connected with a water supply pipe, the water supply pipe is provided with a water supply pump, and the mixing box is connected with The first water outlet pipe, the first water outlet pipe is provided with the first water outlet valve, the mixing box and the flat filter press box are connected through the feed pipe, the outlet of the flat filter press box is opposite to the inlet of the air floatation tank, and the medicine The tank is also communicated with the air buoyancy tank through the second liquid medicine pipe, the second liquid medicine pipe is provided with the second liquid medicine pump, the air floatation tank is connected with the second water outlet pipe, and the second water outlet pipe is provided with the second water outlet valve , the feed port of the waste collection box is opposite to the discharge port of the air flotation tank.

Preferably, a stirring shaft is provided in the flat filter press box, and one end of the stirring shaft passes through the box body and is connected with a drive motor arranged outside the flat filter press box.

Preferably, a plurality of helical blades are arranged at intervals along the length of the stirring shaft.

As preferably, the flat filter press box is also provided with a filter screen arranged relative to its inner wall, and a filtrate outlet cavity is formed between the filter screen and the box body of the flat filter press box, and the filter screen has an opening opposite to the discharge port of the flat filter press box. Outlet.

Preferably, an aeration head is provided at the bottom of the air flotation tank, and a plurality of aeration holes are opened on the aeration head, and the aeration head is connected with an aeration pipe, and an air pump is provided on the aeration pipe.

Preferably, a scraper and a driving mechanism are provided in the air flotation box, and the scraper is connected with the driving mechanism and driven by it to scrape the flocculated sediment in the air flotation box into the waste collection box.

Preferably, the drive mechanism includes two opposite support seat groups arranged on the top of the air flotation tank, each support seat group includes two opposite support seat bodies, and each support seat body of one support seat group is the same as the other support seat body. The relative support seat bodies in a support seat group are connected by drive shafts, any drive shaft is connected with a transmission motor, two drive ring gears are arranged on the two drive shafts, and the drive ring gears on the two drive shafts are kept opposite, and the two drive ring gears are kept opposite to each other. A chain is wound around the opposite drive ring gear on the drive shaft, and the two chains are connected by a scraper.

Preferably, the support seat body is detachably fixed to the air flotation box by threaded fasteners.

Preferably, the flat filter press box communicates with the waste collection box through a recovery pipe, and a recovery pump is arranged on the recovery pipe.

A treatment method for the above-mentioned domestic sewage organic matter net extraction equipment, which comprises the following steps:

S1: Under the action of the raw water pump and the first chemical liquid pump respectively, the raw water and the flocculant medicine are introduced into the mixing tank through the raw water pipe and the first chemical liquid pipe on the raw water tank and the chemical tank, and mixed for the initial flocculation reaction. Form flocculated sediment floating on the water body, and after standing still, the water body below is clarified to obtain clear liquid;

S2: Open the first water outlet valve, so that the clear liquid obtained after the flocculation reaction is discharged into the water treatment system through the first water outlet pipe for subsequent treatment, and the flocs settle with the clear liquid below, and enter the plate filter through the feeding pipe in the box;

S3: After entering the flat filter press box, the driving motor drives the stirring shaft and its helical blades to rotate, and the helical blades stir and squeeze the flocs in it to compact them, so that the water contained in them can be separated out to reduce its Moisture content, the precipitated water falls into the air flotation tank through the filter screen and the filtrate outlet chamber in turn, and at the same time, the spiral blade pushes the floc to move to the outlet of the filter screen until it falls into the air flotation tank;

S4: The second chemical liquid pump introduces the flocculant in the chemical tank into the air flotation tank through the second chemical liquid pipe for secondary flocculation. The tiny particles in the water body of the air flotation tank react with the flocculant to form flocs again and Floating on the water body, at the same time, the air pump draws the external air into the aeration tube, and discharges it from the aeration hole on the aeration head through the aeration tube, and the discharged air generates bubbles in the flotation tank, so that the air in the water body The tiny suspended matter floats up under the disturbance of gas and liquid, which promotes the effect of secondary flocculation. After standing still, the water below is clarified and clear liquid is obtained again;

S5: Open the second water outlet valve, so that the clear liquid obtained after the second flocculation reaction is discharged into the water treatment system through the second water outlet pipe for subsequent treatment, and the flocs settle with the clear liquid below, and form flocculation at the bottom of the air flotation tank Precipitate;

S6: Start the transmission motor, the transmission motor drives the drive shaft to rotate, the drive ring gear on the drive shaft drives the chain transmission, the chain drives the scraper to move from the side of the air flotation tank away from the discharge port to the discharge port, and flocculate The sediment is scraped from its outlet to the waste collection box for collection;

S7: The recovery pump draws the flocculation sediment in the waste collection box into the flat filter press box again through the recovery pipe for extrusion, so that the water contained in it is analyzed, and the above steps are repeated until the water content of the flocculation sediment is reduced to acceptable Standards available.

Compared with the prior art, the present invention has the advantages of:

The net extraction equipment of the present invention stirs and squeezes the preliminary flocculated flocs through a flat filter press box, so that the water contained in them can be separated, so that the water body and the flocs can be separated, and then the water content of the flocs is initially reduced. In the air flotation tank, the flocculation reaction occurs again between the flocculant and the water body in it, so that the particles in the water body can float to the water surface, and the water body below is gradually clarified, so that the water body and the floc can be separated again and discharged separately. After being discharged, flocculated sediments are formed at the bottom of the air flotation tank, thereby further reducing the moisture content of the flocculated sediments and the turbidity of the water body. Since the moisture content of the flocculated sediments after the flocculation reaction has dropped significantly, it is difficult to cause corruption and odor after discharge. In turn, it can significantly reduce the negative impact on the surrounding environment, and the pathogenic microorganisms contained in the water will be discharged into the water treatment system along with the water body for further treatment, so the spread of infectious diseases can be effectively curbed.

Description of drawings

Fig. 1 is the overall structure schematic diagram of organic matter net extraction equipment of the present invention;

Fig. 2 is a schematic diagram of the overall structure of another perspective of the organic matter net extraction equipment of the present invention;

3 is a schematic diagram of the internal structure of the flat plate filter press box of the organic matter net extraction equipment of the present invention;

Fig. 4 is the overall structure schematic diagram of the steam flotation tank of the organic matter net extraction equipment of the present invention;

Fig. 5 is a schematic diagram of the enlarged structure of part A of Fig. 4 of the present invention;

Fig. 6 is a structural block diagram of a flat filter press box of the organic matter net extraction equipment of the present invention.

as the picture shows:

1. Raw water tank; 2. Medicine tank; 3. Mixing tank; 4. Flat filter press tank; 5. Air flotation tank; 6. Waste collection tank; 7. Raw water pipe; Raw water pump; 10, first liquid medicine pump; 11, water supply pipe; 12, water supply pump; 13, first water outlet pipe; 14, first water outlet valve; 15, feed pipe; 16, second liquid medicine pipe; 17 , the second liquid medicine pump; 18, the second water outlet pipe; 19, the second water outlet valve; 20, the stirring shaft; 2001, the spiral blade; 21, the driving motor; 22, the filter screen; 23, the aeration head; Air hole; 24, aeration pipe; 25, air pump; 26, scraper; 27, support seat body; 28, drive shaft; 29, transmission motor; 30, drive ring gear; 31, chain; 32, recovery pipe; 33. Recovery pump.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner" and "outer" are based on those shown in the accompanying drawings. The orientation or positional relationship, or the orientation or positional relationship in which the product of the invention is usually placed in use, is only for the convenience of simplifying the description, rather than indicating or implying that the orientation must have a specific orientation and a specific orientation configuration and operation, Therefore, it should not be construed as limiting the invention.

As shown in Figure 1, Figure 2 and Figure 6, a domestic sewage organic matter net extraction equipment, which includes a raw water tank 1, a medicine tank 2, a mixing tank 3, a flat filter press tank 4, a flotation tank 5 and a waste collection tank 6. Domestic sewage is preliminarily filtered to obtain raw water, which is collected by the raw water tank 1, and the medicine used to configure the flocculant is put into the medicine box 2, and the medicine box 2 is also connected with a water supply pipe 11, and the water supply pipe 11 is equipped with The water supply pump 12, the water supply pump 12 is used to introduce the tap water into the medicine box 2 through the water supply pipe 11 and mix with the medicine therein to form a flocculant. The raw water tank 1 and the medicine box 2 respectively pass through the raw water pipe 7 and the first medicine liquid pipe 8 Connected with the mixing tank 3, the raw water pipe 7 and the first medicinal liquid pipe 8 are respectively provided with a raw water pump 9 and a first medicinal liquid pump 10, and the raw water pump 9 and the first medicinal liquid pump 10 are respectively used to convert the raw water tank 1 and the The raw water and flocculant in the medicine box 2 are introduced into the mixing box 3 through the raw water pipe 7 and the first liquid medicine pipe 8, and the raw water and the flocculant are mixed in the mixing box 3 and undergo flocculation reaction to form organic flocs. After standing still, the flocs float to the water body and are separated from the water body. The mixing box 3 is connected with a first water outlet pipe 13, and the first water outlet pipe 13 is provided with a first water outlet valve 14. After the flocculation reaction, the mixing box 3 The water body in the water can be discharged into the first water outlet pipe 13 through the first water outlet valve 14, and the other end of the first water outlet pipe 13 is connected to the water treatment system to further purify the discharged water body. It should be mentioned that, In the present invention, the first water outlet valve 14 is configured as a manual valve, which is convenient for operators to manually control according to the actual reaction conditions in the flat filter press box 4. The feed port is connected through the feed pipe 15. Since the flocs contain a large amount of water, when the water part is discharged through the first outlet pipe 13, it enters the flat filter press box through the feed pipe, and 4 pairs of flocs pass through the flat filter press box. Stir and extrude, so that the water contained in it can be precipitated, and then initially reduce the water content of the flocs, and then the extruded flocs and the water separated from this part will fall into the filter through the discharge port of the flat filter press. In the air floatation box 5, the moisture separated out by the flocs is collected in the air floatation box 5, and the air floatation box 5 is also communicated with the medicine box 2 through the second liquid medicine pipe 16, and the second medicine liquid pipe 16 is provided with a second medicine liquid. Liquid pump 17, the second chemical liquid pump 17 is used for introducing the flocculant in the chemical tank 2 into the air flotation tank 5 through the second chemical liquid pipe 16, because during pressure filtration, the precipitated moisture often contains a large amount of Fine particles, this part of the particles will fall into the air flotation tank 5 with the precipitated water and flocs, so in the air flotation tank 5, the flocculation reaction occurs again with the water body in the air flotation tank 5, so that the water body and the particles can be separated. The bottom of the air flotation box 5 obtains clarified water, thereby reducing the water turbidity in the air flotation box 5, and at the same time allowing the flocs to be discharged relatively completely. The air flotation box 5 is connected with a second water outlet pipe 18, and the second water outlet pipe 18 is provided with a second water outlet valve 19, and the other end of the second water outlet pipe 18 is also connected to the water treatment system, and the water after the second flocculation reaction can be directly discharged into the water treatment system through the second water outlet pipe 18 for purification After this part of the water body is discharged, the flocs settle and form flocculation sediments at the bottom of the air flotation tank. It should be mentioned that in the present invention, the second water outlet valve 19 is also configured as a manual valve, which is convenient for the operator to adjust according to the steam flow rate. The actual reaction in the floating tank 5 is manually controlled. Compared with the prior art, since the floc after the flocculation reaction is separated from the water body, the water content of the flocculation sediment is greatly reduced, so it is difficult to produce corruption and The stench can significantly reduce the negative impact on the surrounding environment, and the pathogenic microorganisms contained in the water will be discharged into the water treatment system with the water body for further treatment, so it can effectively curb the spread of infectious diseases. Waste collection box The discharge port of 6 is opposite to the feed port of the air flotation box 5, and the flocculated sediment after the secondary flocculation falls into the feed port of the waste collection box 6 through the discharge port of the air flotation box 5, and is collected by the waste material. Box 6 is collected.

As shown in Figure 3, a stirring shaft 20 is provided in the flat filter press box 4, and one end of the stirring shaft 20 runs through the casing and is connected with a drive motor 21 located outside the flat filter press box 4, and the stirring shaft is driven by the drive motor 21 20 rotates at a high speed and squeezes the flocs at the same time, so that the moisture contained in the flocs can be separated out. into the discharge port.

As shown in Figure 3, a plurality of helical blades 2001 are arranged at intervals along its length direction on the stirring shaft 20, and the setting of the helical blades 2001 can hit and cut the flocs when the stirring shaft 20 rotates, and simultaneously make the flocs under the centrifugal force Under the action, it is thrown to the inner wall of the flat plate filter box 4, so that the moisture in the flocs can be further precipitated, so as to further reduce the moisture content of the flocs, avoid the corruption and odor of the flocs finally discharged, and then significantly reduce negative impact on the surrounding environment.

As shown in Figure 3, a filter screen 22 arranged relative to its inner wall is also provided in the flat filter press box 4, and a filtrate outlet cavity is formed between the filter screen 22 and the box body of the flat filter press box 4, and the flocculation in the flat filter press box 4 The water precipitated by the stirring shaft 20 and its helical blade 2001 under the extrusion of the stirring shaft 20 and its helical blade 2001 passes through the filtrate outlet chamber of the filter screen 22 and then is discharged from the first water outlet, while the flocs are trapped in the filter screen 22, thereby reducing the water content in the filter screen 22. Smaller particles are discharged outwards with the water, so that the flat filter press box 4 can provide a better separation effect, and the filter screen 22 is also provided with a discharge port opposite to the discharge port of the flat filter press box 4, which is intercepted by the filter screen 22 The flocs are discharged from the outlet of the stirring shaft 20 under the propulsion of the helical blade 2001.

As shown in Figure 4, the bottom of the air flotation tank 5 is provided with an aeration head 23, and a plurality of aeration holes 2301 are provided on the aeration head 23, and the aeration head 23 is connected with an aeration pipe 24, and on the aeration pipe 24 An air pump 25 is provided, and the air pump 25 extracts external air into the aeration pipe 24, and is discharged from the aeration hole 2301 on the aeration head 23 through the aeration pipe 24, and when the air passes through the aeration head 23, the The aeration hole 2301 on the aeration head 23 divides it into multiple airflows, and generates multiple clusters of air bubbles in the air flotation tank 5, and disturbs the water body during the rising process of the air bubbles, and the tiny suspended matter in the water body floats up under the gas-liquid disturbance, At this time, the water body in the lower layer of the air floatation tank 5 is gradually clarified, and the clarified water body is discharged into the second water outlet pipe 18 through the second water outlet on the air floatation tank 5, and finally discharged to the water treatment system through the second water outlet pipe 18 , after the lower water body is discharged, the floating particles are deposited at the bottom of the air flotation tank 5 to form flocculated sediments. After secondary flocculation, it is ensured that the solid matter and the height of the water body can be separated, thereby further reducing the water content of the final flocculated sediments and the water content. Turbidity.

As shown in Figure 4 and Figure 5, a scraper 26 and a drive mechanism are provided in the air floatation box 5, and the scraper 26 is connected with the drive mechanism and driven by it to scrape the flocculated sediment in the air floatation box 5 to the waste collection box 6, specifically, the trajectory of the scraper 26 movement includes a path moving from the side of the air flotation box 5 away from its discharge port to the discharge port, so under the action of the scraper 26, it can ensure that the deposits in the air flotation box The flocculation sediment attached to the bottom of the 5 and its side wall can be completely discharged, so as to avoid the flocculation sediment residue in the air flotation tank 5 .

As shown in Fig. 4 and Fig. 5, the driving mechanism includes two opposite support seat groups located at the top of the air flotation tank 5, and each support seat group includes two opposite support seat bodies 27, and each support seat group of one of them A supporting seat body 27 is connected with the opposite supporting seat body 27 in another supporting seat group through a drive shaft 28, wherein any one of the drive shafts 28 is connected with a transmission motor 29, and two driving ring gears 30 are arranged on the two driving shafts 28 , and the drive ring gears 30 on the two drive shafts 28 remain relatively, the opposite drive ring gears 30 on the two drive shafts 28 are wound with chains 31, and the two chains 31 are connected by a plurality of scrapers 26, and on the transmission motor 29 Driven, the drive shaft 28 connected to it rotates, and the drive ring gear 30 on it rotates synchronously, and the drive ring gear 30 drives the chain 31 to drive, and the scraper 26 moves with the drive rack. At the same time, under the action of the chain 31 Drive another drive ring gear 30 and the drive shaft 28 connected with it to rotate, so that the scraper 26 can normally move from the side of the air flotation tank 5 away from the discharge port to the discharge port.

Furthermore, the support base body 27 is detachably fixed to the air flotation tank 5 by threaded fasteners. Based on the above configuration, it is convenient to quickly replace the support base body 27 or the transmission shaft, transmission chain 31 and other components when they are damaged.

As shown in Fig. 1, Fig. 2 and Fig. 6, the flat plate filter press box 4 is communicated with the waste collection box 6 through a recovery pipe 32, and the recovery pipe 32 is provided with a recovery pump 33, often in the flocculated sediment after secondary flocculation It still has a relatively high water content, so it can be pumped into the flat filter press box 4 again by the recovery pump 33 through the recovery pipe 32 to squeeze and filter, and the water content of the flocculated sediment can be reduced after the second press filter. further down.

1 to 6, during the net extraction process of the organic matter net extraction equipment of the present invention, firstly, the raw water and the flocculant medicine pass through the raw water tank 1 and the medicine tank 2 under the action of the raw water pump 9 and the first liquid medicine pump 10 respectively. The original water pipe 7 and the first liquid medicine pipe 8 are introduced into the mixing tank 3 to mix and carry out the initial flocculation reaction to form flocs. After standing still, the flocs are separated from the water body, and the water in them is discharged through the first water outlet pipe 13. into the water treatment system for subsequent treatment, while the flocs in the mixing tank 3 enter the flat filter press box 4 through the feed pipe 15 connected to the flat filter press box 4 for press filtration, and start the flat filter press box 4 The drive motor 21 drives the stirring shaft 20 in the flat filter press box 4 to rotate. When the stirring shaft 20 rotates, its helical blade 2001 stirs and squeezes the flocs, so that the contained water can be separated out, and the separated water is passed through The filtrate between the filter screen 22 and the flat filter press box 4 is exported from the cavity and then discharged from the discharge port to the air floatation tank 5. The flocs are retained by the filter screen 22, and are pushed by the agitator shaft 20 and the helical blade 2001 from the filter screen 22. The outlet of the discharge port and the discharge port of the flat filter press box 4 are discharged, and then the flocs also fall into the air floatation box 5. After the flocs and moisture enter the air floatation box 5, the second liquid on the second liquid medicine pipe 16 The liquid medicine pump 17 introduces the flocculant in the medicine tank 2 into the air floatation tank 5 through the second liquid medicine pipe 16 for secondary flocculation. During the secondary flocculation, the air pump 25 draws external air into the aeration pipe 24 , and through the aeration tube 24, it is discharged from the aeration hole 2301 on the aeration head 23, and the discharged air generates bubbles in the air flotation tank 5, so that the tiny suspended solids in the water float up under the gas-liquid disturbance. , the water in the lower layer of the air flotation tank 5 is gradually clarified, and the clarified water is discharged to the water treatment system through the second outlet pipe 18 on the air flotation tank 5 for subsequent treatment. After the lower water body is discharged, the floating particles and flocs are all deposited. At the bottom of the air flotation tank 5, the flocculated sediment is formed, and then the transmission motor 29 is started. Under the drive of the transmission motor 29, the drive shaft 28 drives the chain 31 to drive, and the chain 31 drives the scraper 26 to discharge the material away from the air flotation tank 5. One side of the mouth moves toward the discharge port, and the flocculated sediment is scraped from the discharge port to the waste collection box 6 for collection. Finally, the recovery pump 33 pumps the flocculated sediment in the waste collection box 6 through the recovery pipe 32 again. into the flat filter press box 4 for squeeze filtration, and repeat the above steps to reduce the water content of the flocculated sediment to the discharge standard.

What described in above-mentioned embodiment and description just illustrate the principle of the present invention and preferred embodiment, under the premise of not departing from the spirit and scope of the present invention, the present invention also can have various changes and improvements, and these changes and improvements all fall into within the scope of the claimed invention.

Claims (10)

1. A domestic sewage organic matter net extraction equipment is characterized in that it includes a raw water tank (1), a medicine box (2), a mixing box (3), a flat filter press box (4), and an air floatation box (5) and the waste material collection box (6), the raw water tank (1) and the medicine box (2) are communicated with the mixing tank (3) through the raw water pipe (7) and the first liquid medicine pipe (8) respectively, and the raw water pipe (7) and the first liquid medicine pipe (8) are respectively provided with a raw water pump (9) and a first liquid medicine pump (10), and the medicine box (2) is also communicated with a water supply pipe (11), so The water supply pipe (11) is provided with a water supply pump (12), the mixing tank (3) is connected with a first water outlet pipe (13), and the first water outlet pipe (13) is provided with a first water outlet valve (14), the mixing box (3) and the flat filter press box (4) are communicated by the feed pipe (15), and the outlet of the flat filter press box (4) is connected with the air flotation box (5) The feed inlet is opposite, and the medicine box (2) is also communicated with the air floatation tank (5) through the second medicine liquid pipe (16), and the second medicine liquid pump (16) is provided with the second medicine liquid pipe ( 17), the flotation tank (5) is connected with a second water outlet pipe (18), the second water outlet pipe (18) is provided with a second water outlet valve (19), and the waste collection box (6) The feed port of the feed port is relative to the discharge port of the air flotation tank (5). 2. A device for net extraction of organic matter from domestic sewage according to claim 1, characterized in that a stirring shaft (20) is arranged in the flat filter press box (4), and one end of the stirring shaft (20) runs through The casing is connected with the drive motor (21) located outside the flat filter press box (4). 3. A device for purifying domestic sewage organic matter according to claim 2, characterized in that, a plurality of helical blades (2001) are arranged at intervals along the length direction of the stirring shaft (20). 4. A kind of domestic sewage organic matter net extraction equipment according to claim 2, is characterized in that, also be provided with the filter screen (22) that is arranged relative to its inner wall in the flat filter press box (4), described filter screen A filtrate lead-out chamber is formed between (22) and the casing of the flat filter press box (4), and the filter screen (22) has a discharge port opposite to the discharge port of the flat filter press box (4). 5. A kind of domestic sewage organic matter net extraction equipment according to claim 1, is characterized in that, the bottom of described air flotation tank (5) is provided with aeration head (23), and on described aeration head (23) A plurality of aeration holes (2301) are opened, the aeration head (23) is connected with an aeration pipe (24), and an air pump (25) is arranged on the aeration pipe (24). 6. A kind of domestic sewage organic matter net extraction equipment according to claim 1, is characterized in that, is provided with scraper (26) and drive mechanism in described air floatation box (5), and described scraper (26) and The drive mechanism is connected and driven by it to scrape the flocculation sediment in the air floatation tank (5) into the waste material collection tank (6). 7. A kind of domestic sewage organic matter net extraction equipment according to claim 6, is characterized in that, described driving mechanism comprises two opposite supporting seat groups that are arranged on the top of air floatation tank (5), each of said supporting seat Each group includes two opposite support seat bodies (27), wherein each support seat body (27) of one said support seat group is connected to the opposite support seat body (27) in another support seat group through a drive shaft (28 ) connection, any one of the drive shafts (28) is connected with a transmission motor (29), two drive shafts (28) are provided with two drive ring gears (30), and the two drive shafts (28) The drive ring gears (30) on the top remain opposite, and the opposite drive ring gears (30) on the two drive shafts (28) are wound with chains (31), and the two chains (31) pass through the scraper (26) )connect. 8. The equipment for net extraction of organic matter in domestic sewage according to claim 7, characterized in that, the support seat body (27) is detachably fixed to the air flotation tank (5) by threaded fasteners. 9. A kind of domestic sewage organic matter net extraction equipment according to claim 1, is characterized in that, described flat filter press box (4) and waste material collection box (5) are connected through recovery tube (32), and described recovery tube (32) is provided with recovery pump (33). 10. A treatment method for domestic sewage organic matter net extraction equipment described in any one of claims 1-9, characterized in that it comprises the following steps: S1: The raw water and the flocculant medicine pass through the raw water pipe (7) and the first chemical solution on the raw water tank (1) and the chemical tank (2) under the action of the raw water pump (9) and the first chemical solution pump (10) respectively The pipe (8) is introduced into the mixing tank (3) and mixed for the first flocculation reaction to form flocculation sediment floating on the water body, and the water body below is clarified to obtain a clear liquid after standing still; S2: Open the first water outlet valve (14), so that the clear liquid obtained after the flocculation reaction is discharged into the water treatment system through the first water outlet pipe (13) for subsequent treatment. Material pipe (15) enters in the flat filter press box (4); S3: After entering the flat filter press box, the driving motor (21) drives the stirring shaft (20) and its helical blade (2001) to rotate, and the helical blade (2001) stirs and squeezes the floc in it to compact it , so that the contained water is analyzed to reduce its water content, and the separated water successively passes through the filter screen (22) and the filtrate outlet cavity and falls into the air flotation tank (5). At the same time, the screw blade (2001) pushes the floc to The outlet of filter screen (22) moves until it falls in the air floatation box (5); S4: The second chemical liquid pump (17) introduces the flocculant in the chemical tank (2) into the air flotation tank (5) through the second chemical liquid pipe (16) for secondary flocculation, and the air flotation tank (5) The tiny particles in the water body react with the flocculant to form flocs again and float to the water body. At the same time, the air pump (25) draws the external air into the aeration pipe (24), and through the aeration pipe (24). The aeration hole (2301) on the air head (23) is discharged outward, and the discharged air generates air bubbles in the air flotation tank (5), so that the tiny suspended solids in the water body float up under the gas-liquid disturbance, and promote the secondary flocculation. After standing still, the water below is clarified and clear liquid is obtained again; S5: Open the second water outlet valve (19), so that the clear liquid obtained after the secondary flocculation reaction is discharged into the water treatment system through the second water outlet pipe (18) for subsequent treatment, and the flocs settle with the clear liquid below. The flocculation sediment is formed at the bottom of the flotation tank (5); S6: Start the transmission motor (29), the transmission motor (29) drives the drive shaft (28) to rotate, the drive ring gear (30) on the drive shaft (28) drives the chain (31) for transmission, and the chain (31) drives the scraper (26) Move from the side of the air flotation box (5) far away from the discharge port to the discharge port, and scrape the flocculation sediment from the discharge port into the waste collection box (6) for collection; S7: The recovery pump (33) draws the flocculated sediment in the waste collection box (6) through the recovery pipe (32) into the flat filter press box (4) again for extrusion, so that the water contained in it is analyzed, and the above steps are repeated Steps until the moisture content of the flocculated sediment is reduced to the available standard.

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