CN1253379C - Gas float and deposition equipment for separating solid and liquid - Google Patents

Abstract

The utility model relates to an air flotation and sedimentation solid-liquid separation device, which relates to a water purification device capable of switching two water treatment processes of air flotation and sedimentation. The middle and lower part of the contact area baffle plate (5) of the present invention has a water hole (34), and a communication valve (17) is provided on the contact area baffle plate (5) of the water hole (34), and the separation area (31) The lower part of the shell (30) at the bottom is provided with a perforated water collection pipe (12), and the outer end of the perforated water collection pipe (12) passes through the shell (30) and is fixedly connected with one end of the air flotation water outlet valve (9), and the air flotation comes out The other end of the water valve (9) is connected with an air flotation outlet pipe (13), and the top of the perforated flower wall (20) has a through hole (33). The present invention has a water hole (34) on the baffle plate (5) in the contact area and is provided with a connecting valve (17), and a perforated water collection pipe (12) is provided in the separation area (31), and the perforated flower wall (20) The through hole (33) is opened on the top of the perforated flower wall (20), taking into account both the requirements of air flotation and precipitation. The invention has the advantages of reasonable structure, convenient operation and optimal water purification effect.

Description

Air flotation and sedimentation solid-liquid separation device

technical field

The invention relates to a water purification device capable of switching two water treatment processes of air flotation and sedimentation, in particular to a solid-liquid separation device in the fields of domestic and production water and sewage treatment.

Background technique

The Chinese patent number is ZL92104174.8, which is an invention patent named "Floating and sinking solid-liquid separation device of lateral flow inclined plate". This device has a certain effect on the treatment of low-temperature, low-turbidity and high-algae water quality raw water; it also has good adaptability to the treatment of high-turbidity raw water. However, the production practice proves that there are still problems that seriously affect the water treatment effect; first, the leading idea of the design is to take into account the requirements of both air flotation and sedimentation equipment, and in fact neither air flotation nor sedimentation can be well satisfied Water purification effect, second, the baffle in the contact area is set relatively short because of the two technological requirements of air flotation and sedimentation, which fails to meet the full mixing and contact between dissolved air water and water to be treated during air flotation to form flocculation At the same time, because the setting of the baffle in the contact area hinders the sedimentation and water distribution, it is easy to cause the well-formed flocs to break and affect the treatment effect. Third, in order to take into account both air flotation and sedimentation, a perforated flower wall and a water collection tank are installed. The water collection and discharge device is shared by air flotation and sedimentation. The perforated flower wall opening is located in the middle, while air flotation requires water collection at the bottom and sedimentation requires water collection at the top. Setting it in the middle does not satisfy both, resulting in no matter whether it is air flotation or sedimentation during operation. There are more flocs in the effluent, which affects the water purification effect of sedimentation and air flotation.

Invention content:

The object of the present invention is to provide an air flotation and sedimentation solid-liquid separation device, which has the characteristics of reasonable structure, convenient operation and optimal water purification effect. The present invention consists of a partition 1, a water distribution baffle 2, a dissolved air water pipe 3, a releaser 4, a contact area baffle 5, an inclined plate assembly 6, a perforated mud discharge pipe 7, a baffle 8, an air flotation outlet valve 9, Mud scraper 10, sediment outlet valve 11, perforated water collection pipe 12, air flotation outlet pipe 13, sediment discharge valve 14, sediment outlet pipe 15, slag discharge tank 16, communication valve 17, valve hand wheel 18, connecting rod 19, Perforated flower wall 20, water collection tank 21, return water pump 22, air compressor 23, air storage tank 24, dissolved air tank 25, pipeline 26, main water collection tank 27, slag scraper 28, shell 30, contact area baffle 5 is fixed In the housing 30, a flocculation tank 29 is formed in the housing 30 on the left side of the contact zone baffle plate 5, and a separation zone 31 is formed in the housing 30 on the right side of the contact zone baffle plate 5, and the dividing plate 1 is fixed in the housing 30 at the flocculation tank 29 place , the water distribution baffle 2 is fixed in the shell 30 on both sides of the partition 1, a water passage 32 is provided between the lower end of the water distribution baffle 2 and the inner bottom of the shell 30, the contact area baffle 5 and the adjacent water distribution baffle 2 forms a contact area 35, the spoiler 8 is fixed on the inner bottom of the shell 30 of the separation zone 31, the swash plate assembly 6 is fixed on the upper part of the spoiler 8, and the shell 30 on the right side of the swash plate assembly 6 is fixed with Perforated flower wall 20, a slag discharge tank 16 is fixed on the left side of the upper part of the perforated flower wall 20, a water collecting tank 21 is arranged on the upper part between the perforated flower wall 20 and the shell 30, and a general water collecting tank 27 is fixed on the upper part of the shell 30 on the right side of the water collecting tank 21 , the bottom of the total sump 27 is connected with a precipitation outlet valve 11, the lower end of the precipitation outlet valve 11 is connected with a precipitation outlet pipe 15, the upper opening of the shell 30 is provided with a slag scraper 28, and one side of the lower part of the shell 30 is provided with a mud discharge Pipe 7, the inner end of the mud discharge pipe 7 communicates with the inside of the shell 30, the outer end of the mud discharge pipe 7 is connected with a sedimentation mud discharge valve 14, and the lower part of the shell 30 of the separation area 31 is provided with a mud scraper 10, which dissolves One end of the gas-water pipe 3 is fixedly connected with the outlet of the gas-dissolving tank 25, and the other end of the gas-dissolving water pipe 3 is arranged at the lower part between the water distribution baffle plate 2 and the contact area baffle plate 5 in the contact area 35 and is fixed with a release device 4, which contacts The middle and lower part of the zone baffle plate 5 has a water hole 34, and a communication valve 17 is provided on the contact area baffle plate 5 at the water hole 34, and a connecting rod 19 is arranged on the communication valve 17, and the outer end of the connecting rod 19 is fixed. There is a valve handwheel 18, and the lower part of the casing 30 at the separation area 31 is provided with a perforated water collection pipe 12, and the outer end of the perforated water collection pipe 12 passes through the casing 30 and is fixedly connected with one end of the air flotation water outlet valve 9, and the air flotation water outlet The other end of the valve 9 is connected with an air flotation outlet pipe 13 , and the top of the perforated flower wall 20 has a through hole 33 . The height of the baffle plate 5 in the contact area of the present invention is nearly one-third higher than that of the baffle plate in the prior art, which satisfies the requirement of fully mixing and contacting the dissolved air water and the water to be treated during air flotation to form flocs and coagulate. Requirements: On the contact area baffle plate 5, a water hole 34 is provided and a connecting valve 17 is arranged, a perforated water collection pipe 12 is arranged in the separation area 31, and the through hole 33 of the perforated flower wall 20 is opened on the top of the perforated flower wall 20, It takes into account the requirements of both air flotation and sedimentation. The invention has the advantages of reasonable structure, convenient operation and optimal water purification effect.

Description of drawings:

Fig. 1 is a schematic view of the top view of the present invention, Fig. 2 is a sectional view of A-A of Fig. 1, Fig. 3 is a schematic view of the structure of the contact zone baffle plate 5 and the communication valve 17, Fig. 4 is the structure of an existing air flotation and precipitation solid-liquid separation device schematic diagram.

Detailed ways:

Specific embodiment one: (see Figure 1-Figure 3) This embodiment consists of a partition 1, a water distribution baffle 2, a dissolved air water pipe 3, a releaser 4, a contact area baffle 5, an inclined plate assembly 6, and a perforated mud discharge pipe 7. Baffle plate 8, air flotation water outlet valve 9, mud scraper 10, sedimentation water outlet valve 11, perforated water collection pipe 12, air flotation water outlet pipe 13, sedimentation mud discharge valve 14, sedimentation water outlet pipe 15, slag discharge tank 16 , communication valve 17, valve hand wheel 18, connecting rod 19, perforated flower wall 20, water collection tank 21, return water pump 22, air compressor 23, gas storage tank 24, dissolved air tank 25, pipeline 26, total water collection tank 27, scraper The slag machine 28 and the shell 30 are composed, the contact zone baffle plate 5 is fixed in the shell 30, the flocculation pool 29 is formed in the shell 30 on the left side of the contact zone baffle plate 5, and the separation zone 31 is formed in the shell 30 on the right side of the contact zone baffle plate 5 , the partition 1 is fixed in the shell 30 at the flocculation tank 29, the water distribution baffle 2 is fixed in the shell 30 on both sides of the partition 1, and a water passage is provided between the lower end of the water distribution baffle 2 and the inner bottom of the shell 30 32. The contact area 35 is formed between the contact area baffle plate 5 and the adjacent water distribution baffle plate 2, the baffle plate 8 is fixed on the inner bottom of the shell 30 of the separation area 31, and the swash plate assembly 6 is fixed on the bottom of the baffle plate 8 On the upper part, a perforated flower wall 20 is fixed in the shell 30 on the right side of the inclined plate assembly 6, and a slag discharge tank 16 is fixed on the left side of the upper part of the perforated flower wall 20, and a water collection tank 21 is arranged on the upper part between the perforated flower wall 20 and the shell 30, and the water collection tank 21 The upper part of the casing 30 on the right side is fixed with a total water collection tank 27, the bottom of the total water collection tank 27 is connected with a sedimentation outlet valve 11, and the lower end of the precipitation outlet valve 11 is connected with a precipitation outlet pipe 15, and the upper opening of the casing 30 is provided with a scraper. Slag machine 28, one side of the lower part of the shell 30 is provided with a mud discharge pipe 7, the inner end of the mud discharge pipe 7 communicates with the inside of the shell 30, and the outer end of the mud discharge pipe 7 is connected with a sedimentation mud discharge valve 14, and the separation area 31 The lower part of the housing 30 is provided with a mud scraper 10, the outlet end of the return water pump 22 is fixedly connected to one end of the pipeline 26, the other end of the pipeline 26 is fixedly connected to the water inlet of the dissolved air tank 25, and the output of the air compressor 23 end is connected with the inlet end of the gas storage tank 24, the outlet end of the gas storage tank 24 is connected with the intake end of the dissolved gas tank 25, and one end of the dissolved gas water pipe 3 is fixedly connected with the outlet of the dissolved gas tank 25, and the dissolved gas water pipe The other end of 3 is located at the lower part between the water distribution baffle plate 2 and the contact area baffle plate 5 in the contact area 35 and is fixed with a release device 4, and the middle and lower part of the contact area baffle plate 5 has a water hole 34, and in the water hole The contact area baffle plate 5 at the 34 place is provided with a communication valve 17, the communication valve 17 is provided with a connecting rod 19, the outer end of the connecting rod 19 is fixed with a valve hand wheel 18, and the lower part of the shell 30 at the separation area 31 is provided with The perforated water collection pipe 12, the outer end of the perforated water collection pipe 12 passes through the shell 30 and is fixedly connected to one end of the air flotation water outlet valve 9, the other end of the air flotation water outlet valve 9 is connected to the air flotation water outlet pipe 13, and the upper part of the perforated flower wall 20 A through hole 33 is opened.

Embodiment 2: (see FIG. 1 ) The difference between this embodiment and Embodiment 1 is that the air-dissolving water pipe 3 is composed of two, and the two air-dissolving water pipes 3 are arranged in parallel. Other composition and connection relationship with

The specific embodiment one is the same.

Working principle: When the raw water has low turbidity, low temperature, low turbidity, high algae, and high color, switch to the air flotation process.

(1) Open the sediment discharge valve 14, start the mud scraper 10 to scrape and discharge mud, and close the sediment outlet valve 11 at the same time to stop the water outlet. (2) After the settled sludge is determined according to the water quality of the sludge discharge, close the communication valve 17 on the baffle plate 5 in the contact area, start the backflow water pump 22 and the air compressor 23, and when the dissolved air pressure reaches, pass through the pressure dissolved air water pipe 3 and releaser 4 to the contact area 35, that is, the area formed between the contact area baffle plate 5 and the water distribution baffle plate 2, into the pressure dissolved air water, open the air flotation water outlet valve 9, close the sediment discharge valve 14, stop the discharge mud. (3) The water flows through the contact zone 35, that is, the area formed by the contact zone baffle plate 5 and the water distribution baffle plate 2, goes upward, crosses the contact zone baffle plate 5 and enters the separation zone 31, and then flows through the inclined plate assembly 6 to realize floating and separation of impurity particles in the water Afterwards, the obliquely deflects toward the water outlet and flows downward into the perforated water collecting pipe 12 to form water outlet.

When the raw water turbidity is high, switch to the sedimentation process to run.

(1) Close the air flotation water outlet valve 9, and start the slag scraper 28 at the same time to scrape off the scum on the water surface. (2) Open the communication valve 17 on the baffle plate 5 of the contact area. (3) Open the precipitation outlet valve 11. (4) The water after flocculation flows through the connecting valve 17 at the lower part of the baffle plate 5 in the contact area, enters the inclined plate assembly 6, and precipitates and separates therein, the floc impurities sink to the bottom, and the purified water flows into the upper part of the perforated flower wall 20. The through hole 33 enters the water collection tank 21, and finally forms sediment to discharge water.

Parts such as shell, baffle plate, perforated flower wall, baffle plate and the like can be made into concrete large-scale structure in the assembly of the present invention, also available steel plate, plastics and other materials are made into medium and small-sized structure.

Claims (2)

1. Air flotation and sedimentation solid-liquid separation device, which consists of a partition (1), a water distribution baffle (2), a dissolved air water pipe (3), a releaser (4), a contact area baffle (5), and an inclined plate assembly (6), perforated mud discharge pipe (7), spoiler (8), air flotation outlet valve (9), mud scraper (10), sedimentation outlet valve (11), perforated water collection pipe (12), air Floating water pipe (13), sedimentation mud discharge valve (14), sedimentation outlet pipe (15), slag discharge tank (16), communication valve (17), valve hand wheel (18), connecting rod (19), perforated flower wall (20), water collection tank (21), return water pump (22), air compressor (23), air storage tank (24), dissolved air tank (25), pipeline (26), total water collection tank (27), scraper The slag machine (28) and the shell (30) are composed, the contact area baffle (5) is fixed in the shell (30), and the flocculation pool (29) is formed in the shell (30) on the left side of the contact area baffle (5). A separation zone (31) is formed in the housing (30) on the right side of the zone baffle (5), the partition (1) is fixed in the housing (30) at the flocculation tank (29), and the water distribution baffle (2) is fixed in the partition In the shell (30) on both sides of the plate (1), a water passage (32) is provided between the lower end of the water distribution baffle (2) and the inner bottom of the shell (30), and the contact area baffle (5) is connected to the adjacent The contact area (35) is formed between the water distribution baffles (2), the baffle (8) is fixed on the inner bottom of the shell (30) of the separation area (31), and the swash plate assembly (6) is fixed on the baffle (8), the shell (30) on the right side of the inclined plate assembly (6) is fixed with a perforated flower wall (20), the left side of the perforated flower wall (20) top is fixed with a slag discharge groove (16), and the perforated flower wall (20) ) and the shell (30) are provided with a sump (21), the top of the shell (30) on the right side of the sump (21) is fixed with a total sump (27), and the bottom of the sump (27) is connected There is a sediment outlet valve (11), the lower end of the sediment outlet valve (11) is connected with a sediment outlet pipe (15), the upper opening of the shell (30) is provided with a slag scraper (28), and one side of the lower part of the shell (30) A mud discharge pipe (7) is provided, and the inner end of the mud discharge pipe (7) communicates with the inside of the shell (30), and the outer end of the mud discharge pipe (7) is connected with a sedimentation mud discharge valve (14), and the separation area ( 31) The lower part in the shell (30) is provided with a mud scraper (10), and one end of the dissolved air water pipe (3) is fixedly connected with the outlet of the dissolved air tank (25), and the other end of the dissolved air water pipe (3) is located at The lower part between the water distribution baffle (2) and the contact area baffle (5) in the contact area (35) is fixed with a release device (4), which is characterized in that the middle and lower part of the contact area baffle (5) is provided with a water hole (34), the contact area baffle plate (5) at the water hole (34) is provided with a connecting valve (17), the connecting valve (17) is provided with a connecting rod (19), and the connecting rod (19) The outer end is fixed with a valve handwheel (18), and the lower part in the shell (30) at the separation area (31) is provided with a perforated water collection pipe (12), and the outer end of the perforated water collection pipe (12) passes through the shell (30) and One end of the air flotation water outlet valve (9) is fixedly connected, the other end of the air flotation water outlet valve (9) is connected with an air flotation water outlet pipe (13), and the upper part of the perforated flower wall (20) has a through hole (33). 2. The air flotation and precipitation solid-liquid separation device according to claim 1, characterized in that the dissolved air water pipe (3) consists of two, and the two dissolved air water pipes (3) are arranged in parallel.

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