CN101445296A - Apparatus for biologically treating livestock and poultry waster water - Google Patents

Abstract

The utility model relates to biological treatment equipment for livestock and poultry wastewater, which relates to biological treatment equipment for wastewater. The invention solves the problem of the poor effect of anaerobic treatment of livestock and poultry wastewater in the existing biological treatment of livestock and poultry wastewater, the high investment and operating costs of aerobic treatment of livestock and poultry wastewater, and the combined anaerobic-aerobic treatment of livestock and poultry wastewater The problems of large floor area, long process route and high infrastructure cost. The anaerobic granular sludge of the present invention is arranged in the upper cylinder of the lower anaerobic reaction cylinder, the three-phase separator is installed in the upper anaerobic reaction cylinder, and the isolation box and the aerobic tank are installed side by side on the upper anaerobic reaction cylinder. On the end face, the conical cavity is installed in the isolation box, the floating ball is arranged in the conical cavity, the air distribution device is installed on the bottom plate of the aerobic box, and the aerobic reactant is arranged in the aerobic box. The invention has the advantages of good ammonia nitrogen removal effect, low investment and operating costs, small equipment footprint, simple process, low infrastructure cost and simple structure.

Description

A biological treatment equipment for livestock and poultry wastewater

technical field

The invention relates to wastewater biological treatment equipment, which belongs to the technical field of wastewater treatment equipment.

Background technique

While the rapid development of the livestock and poultry breeding industry has brought huge economic benefits to the society, the environmental problems caused by the livestock and poultry wastewater discharged are also becoming more and more serious. Due to the lack of attention paid to the pollution of livestock and poultry farming, coupled with the low profit of livestock and poultry farming, most farms directly discharge livestock and poultry wastewater without effective treatment. With the intensification of eutrophication in water bodies, people pay more and more attention to the discharge of nitrogen-containing wastewater, and livestock and poultry wastewater has the characteristics of high concentration of organic matter, high concentration of ammonia nitrogen and high suspended solids. A lot of research has been done, but there are still many problems with the current technology. For example, using a natural treatment system for treatment, its treatment effect is easily affected by seasons and temperature changes, and requires a large amount of land area. For the actual situation in my country where there are many people and little land, biological treatment technology will be the best choice for livestock in land-limited areas. Excellent choice for poultry wastewater treatment. However, in the biological treatment technology, anaerobic biological treatment can directly treat high-concentration livestock wastewater and recover energy. However, the concentration of pollutants in the water after anaerobic treatment is still high, especially the ammonia nitrogen is basically not removed. After the water body, the impact on the environment is still great, and further treatment is required; the aerobic process directly treats livestock and poultry wastewater, and the investment and operation costs are very high, and the combination of anaerobic and aerobic treatment has become the first choice of livestock and poultry wastewater treatment process. The best choice, but the anaerobic-aerobic combined treatment process also requires a large footprint, and the process route is very long, which makes the infrastructure cost high.

Contents of the invention

The purpose of the present invention is to solve the poor effect of anaerobic treatment of livestock and poultry wastewater in the existing biological treatment of livestock and poultry wastewater, high investment and operating costs of aerobic treatment of livestock and poultry wastewater, combined anaerobic-aerobic treatment The livestock and poultry wastewater has the problems of large area, long process route and high infrastructure cost, and further provides a livestock and poultry wastewater biological treatment equipment.

The technical scheme of the present invention is: a biological treatment equipment for livestock and poultry wastewater is composed of an anaerobic treatment device, an anaerobic-aerobic isolation device and an aerobic treatment device, and the anaerobic treatment device includes a water inlet pipe and a lower anaerobic reaction cylinder body, a plurality of valve bodies, anaerobic granular sludge, a plurality of sampling pipes, an upper anaerobic reaction cylinder, a three-phase separator, an air outlet pipe and a first water outlet pipe, and the lower anaerobic reaction cylinder consists of an upper cylinder , a lower cylinder and a conical bottom cylinder, the upper cylinder and the lower cylinder are made into one body, the lower cylinder and the conical bottom cylinder are connected by a flange, and the water inlet pipe is installed on the lower end surface of the conical bottom cylinder and connected with the conical bottom cylinder, the anaerobic granular sludge is arranged in the upper cylinder, and the plurality of sampling pipes are installed on the outer wall of the upper cylinder along the axial direction of the lower anaerobic reaction cylinder, and are connected with the upper cylinder The cylinder is connected, the upper anaerobic reaction cylinder is installed on the upper end surface of the upper cylinder and communicated with the upper cylinder, the three-phase separator is installed in the upper anaerobic reaction cylinder, and one end of the outlet pipe is installed On the upper end face of the three-phase separator and communicated with the three-phase separator, the other end of the outlet pipe passes through the upper anaerobic reaction cylinder, and the first outlet pipe is installed on the outer wall of the upper anaerobic reaction cylinder and connected with the upper anaerobic reaction cylinder, the multiple valve bodies are respectively installed on the water inlet pipe, multiple sampling pipes and outlet pipes; the anaerobic-aerobic isolation device consists of an isolation box, a floating ball and a cone The aerobic treatment device is composed of an aerobic tank, an air distribution device, an aerobic reaction body, an outlet weir and a second outlet pipe, and the isolation box and the aerobic tank are installed side by side on the upper anaerobic reaction cylinder on the upper end face of the isolation box and the aerobic box, and the conical cavity is installed in the isolation box, and the small-diameter end of the conical cavity communicates with the upper anaerobic reaction cylinder, the conical cavity The large-diameter end of the cavity is fixed to the inner wall of the isolation box, and the upper end of the side wall of the isolation box adjacent to the aerobic box is flush with the large-diameter end of the conical cavity and there is a gap between the upper end plate of the isolation box. The floating ball is arranged in the conical cavity, the air distribution device is installed on the bottom plate of the aerobic box, and there is a gap between the lower end of the side wall of the aerobic box adjacent to the isolation box and the bottom plate of the aerobic box, so The aerobic reactant is arranged in the aerobic box and its lower end is on the bottom plate of the aerobic box, and the side wall of the aerobic box at the upper end of the aerobic reactant has a water outlet, and the water outlet weir is installed on the aerobic box. On the side wall of the box and corresponding to the water outlet, the second water outlet pipe is installed on the bottom plate of the water outlet weir and communicated with the water outlet weir.

Compared with the prior art, the present invention has the following beneficial effects: the present invention has the advantages of good ammonia nitrogen removal effect, low investment and operating costs, small equipment footprint, simple process, low infrastructure cost and simple structure. The invention can be used independently, in series, or in parallel, and can also be used for upgrading and reforming existing wastewater treatment facilities, and is easy to popularize and apply.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the present invention, and Fig. 2 is a schematic diagram of the structure of the water distribution plate.

Detailed ways

Specific Embodiment 1: This embodiment is described in conjunction with FIG. 1. This embodiment is composed of an anaerobic treatment device 30, an anaerobic-aerobic isolation device 31 and an aerobic treatment device 32. The anaerobic treatment device 30 includes a water inlet pipe 1 , lower anaerobic reaction cylinder 3, multiple valve bodies 4, anaerobic granular sludge 5, multiple sampling pipes 6, upper anaerobic reaction cylinder 7, three-phase separator 8, air outlet pipe 9 and first water outlet pipe 10. The lower anaerobic reaction cylinder 3 is composed of an upper cylinder 3-1, a lower cylinder 3-2 and a conical bottom cylinder 3-3, and the upper cylinder 3-1 and the lower cylinder 3-2 Made into one body, the lower cylinder 3-2 is connected to the conical bottom cylinder 3-3 through a flange, and the water inlet pipe 1 is installed on the lower end surface of the conical bottom cylinder 3-3 and connected to the conical bottom cylinder 3-3. 3 connected, the anaerobic granular sludge 5 is arranged in the upper cylinder 3-1, and the plurality of sampling pipes 6 are installed on the outer wall of the upper cylinder 3-1 along the axial direction of the lower anaerobic reaction cylinder 3 , and communicated with the upper cylinder 3-1, the upper anaerobic reaction cylinder 7 is installed on the upper end surface of the upper cylinder 3-1 and communicated with the upper cylinder 3-1, the three-phase separator 8 is installed In the upper anaerobic reaction cylinder 7, one end of the air outlet pipe 9 is installed on the upper end face of the three-phase separator 8 and communicated with the three-phase separator 8, and the other end of the air outlet pipe 9 passes through the upper end of the upper anaerobic Oxygen reaction cylinder 7, the first outlet pipe 10 is installed on the outer wall of the upper anaerobic reaction cylinder 7 and communicates with the upper anaerobic reaction cylinder 7, and the plurality of valve bodies 4 are respectively installed on the water inlet pipe 1, On a plurality of sampling pipes 6 and the outlet pipe 10; the anaerobic-aerobic isolation device 31 is made up of the isolation box 11, the float 12 and the conical cavity 13, and the aerobic treatment device 32 is composed of the aerobic box 14, The air distribution device 15, the aerobic reaction body 16, the water outlet weir 17 and the second outlet pipe 18 are composed. The isolation box 11 and the aerobic box 14 are installed side by side on the upper end surface of the upper anaerobic reaction cylinder 7, and the isolation box There is a gap between 11 and aerobic box 14, and the conical cavity 13 is installed in the isolation box 11, and the small-diameter end of the conical cavity 13 communicates with the upper anaerobic reaction cylinder 7, and the conical cavity The large-diameter end of 13 is affixed to the inner wall of the isolation box 11, and the upper end of the side wall of the isolation box 11 adjacent to the aerobic box 14 is flush with the large-diameter end of the conical cavity 13 and leaves a space between the upper end plate of the isolation box 11. There is a gap, the floating ball 12 is arranged in the conical cavity 13, the air distribution device 15 is installed on the bottom plate of the aerobic box 14, and the lower end of the side wall of the aerobic box 14 is adjacent to the isolation box 11 and the well. There is a gap between the bottom plates of the oxygen box 14, the aerobic reactant 16 is arranged in the aerobic box 14 and its lower end is on the bottom plate of the aerobic box 14, the aerobic box 14 at the upper end of the aerobic reactant 16 There is a water outlet 14-1 on the side wall, the water outlet weir 17 is installed on the side wall of the aerobic tank 14 and corresponds to the water outlet 14-1, and the second water outlet pipe 18 is installed on the side wall of the water outlet weir 17 It is on the bottom plate and communicates with the outlet weir 17.

Embodiment 2: This embodiment will be described with reference to FIG. 1 . The aerobic reactant 16 in this embodiment is ordinary activated sludge. With such settings, the removal rate of organic matter reaches 85% to 90%, and the removal rate of ammonia nitrogen reaches 70% to 80%. Other compositions and connections are the same as in the first embodiment.

Embodiment 3: This embodiment is described with reference to FIG. 1 . The aerobic reactant 16 of this embodiment is aerobic granular sludge. With such settings, the removal rate of organic matter can reach more than 90%, and the removal rate of ammonia nitrogen can reach more than 80%. Other compositions and connections are the same as in the first embodiment.

Embodiment 4: This embodiment is described with reference to FIG. 1 . The aerobic reactant 16 of this embodiment is a biological carrier. With such settings, the removal rate of organic matter can reach more than 90%, and the removal rate of ammonia nitrogen can reach more than 80%. Other compositions and connections are the same as in the first embodiment.

Embodiment 5: This embodiment is described with reference to FIG. 1 . The floating ball 12 of this embodiment is made of rubber material. With such setting, the water inlet is kept unobstructed, so that the reaction device can operate in continuous flow. Other compositions and connections are the same as in the first embodiment.

Embodiment 6: This embodiment is described with reference to FIG. 1 . The floating ball 12 of this embodiment is made of glass material. With such setting, the water inlet is kept unobstructed, so that the reaction device can operate in continuous flow. Other compositions and connections are the same as in the first embodiment.

Embodiment 7: This embodiment is described with reference to FIG. 1 . The floating ball 12 of this embodiment is made of stainless steel. With such setting, the water inlet is kept unobstructed, so that the reaction device can operate in continuous flow. Other compositions and connections are the same as in the first embodiment.

Embodiment 8: This embodiment is described with reference to FIG. 1 . The anaerobic treatment device 30 of this embodiment is further provided with a gas collection ring 19 , and the gas collection ring 19 is fixed on the inner wall of the upper end of the upper cylinder 3-1. Such setting can promote gas accumulation, and the effect of gas-water separation is good. Other compositions and connections are the same as in the first embodiment.

Ninth Embodiment: This embodiment will be described with reference to FIG. 1 . The cross-section of the gas gathering ring 19 in this embodiment is triangular. With this setting, the gas can be better gathered, and the gas-water separation effect is good. Other compositions and connections are the same as those in Embodiment 8.

Specific Embodiment Ten: This embodiment is described in conjunction with Fig. 1 and Fig. 2. The anaerobic treatment device 30 of this embodiment is also added with a water distribution plate 2, and a plurality of holes 2 are evenly opened on the circular surface of the water distribution plate 2. -1, the water distribution plate 2 is installed in the lower anaerobic reaction cylinder 3 and located at the intersection of the upper cylinder 3-1 and the lower cylinder 3-2. This setting makes the water distribution more even and prevents the packing from blocking the water inlet pipe. Other compositions and connections are the same as those in Embodiment 1, 8 or 9.

The working principle of the present invention is illustrated in conjunction with Fig. 1: the waste water enters the lower anaerobic reaction cylinder 3 through the water distribution plate 2 through the water inlet pipe 1 to perform anaerobic reaction with the anaerobic granular sludge 5, and the gas generated passes through the three-phase separator 8 And the air outlet pipe 9 is discharged, the liquid flowing out passes through the upper anaerobic reaction cylinder 7, and then enters the conical cavity 13 to float the float 12 in an upflow manner, and the liquid flows out along the large diameter end of the conical cavity 13 It flows into the aerobic box 14, and finally flows out after the aerobic reaction cylinder 16 reacts aerobically.

Claims (10)

1, a kind of livestock and poultry wastewater biological treatment equipment, it is made up of anaerobic treatment device (30), anaerobic-aerobic isolation device (31) and aerobic treatment device (32), it is characterized in that: described anaerobic treatment The device (30) includes a water inlet pipe (1), a lower anaerobic reaction cylinder (3), a plurality of valve bodies (4), anaerobic granular sludge (5), a plurality of sampling pipes (6), an upper anaerobic reaction Cylinder (7), three-phase separator (8), air outlet pipe (9) and first water outlet pipe (10), the lower anaerobic reaction cylinder (3) consists of upper cylinder (3-1), lower The cylinder (3-2) is composed of a cone-shaped bottom cylinder (3-3), the upper cylinder (3-1) and the lower cylinder (3-2) are made into one body, and the lower cylinder (3-2) It is connected with the conical bottom cylinder (3-3) through a flange, and the water inlet pipe (1) is installed on the lower end surface of the conical bottom cylinder (3-3) and communicated with the conical bottom cylinder (3-3) , the anaerobic granular sludge (5) is arranged in the upper cylinder (3-1), and the plurality of sampling pipes (6) are installed in the upper cylinder along the axial direction of the lower anaerobic reaction cylinder (3) (3-1) on the outer wall and communicated with the upper cylinder (3-1), the upper anaerobic reaction cylinder (7) is installed on the upper end surface of the upper cylinder (3-1) and connected with the upper cylinder body (3-1), the three-phase separator (8) is installed in the upper anaerobic reaction cylinder (7), and one end of the outlet pipe (9) is installed on the top of the three-phase separator (8). On the end face, and communicated with the three-phase separator (8), the other end of the outlet pipe (9) passes through the upper anaerobic reaction cylinder (7), and the first outlet pipe (10) is installed on the upper anaerobic On the outer wall of the reaction cylinder (7) and communicated with the upper anaerobic reaction cylinder (7), the plurality of valve bodies (4) are respectively installed in the water inlet pipe (1), a plurality of sampling pipes (6) and the water outlet pipe (10); the anaerobic-aerobic isolation device (31) is made up of an isolation box (11), a float (12) and a conical cavity (13), and the aerobic treatment device (32) is composed of a good Oxygen box (14), air distribution device (15), aerobic reactant (16), water outlet weir (17) and second water outlet pipe (18), described isolation box (11) and aerobic box (14) It is installed side by side on the upper end face of the upper anaerobic reaction cylinder (7), and there is a gap between the isolation box (11) and the aerobic box (14), and the tapered cavity (13) is installed on the isolation box ( 11), and the small-diameter end of the conical cavity (13) communicates with the upper anaerobic reaction cylinder (7), and the large-caliber end of the conical cavity (13) is affixed to the inner wall of the isolation box (11), The upper end of the side wall of the isolation box (11) adjacent to the aerobic box (14) is flush with the large-diameter end of the conical cavity (13) and there is a gap between the upper end plate of the isolation box (11), and the floating The ball (12) is arranged in the conical cavity (13), the air distribution device (15) is installed on the bottom plate of the aerobic box (14), and the aerobic box (14) is adjacent to the isolation box (11). There is a gap between the lower end of the side wall and the bottom plate of the aerobic box (14), and the aerobic reactant (16) is arranged in the aerobic box (14) and its lower end is in the aerobic box (14). ), the side wall of the aerobic box (14) at the upper end of the aerobic reactant (16) has a water outlet (14-1), and the water outlet weir (17) is installed in the aerobic box (14 ) and corresponding to the water outlet (14-1), the second water outlet pipe (18) is installed on the bottom plate of the water outlet weir (17) and communicated with the water outlet weir (17). 2. The biological treatment equipment for livestock and poultry wastewater according to claim 1, characterized in that: the aerobic reactant (16) is ordinary activated sludge. 3. The biological treatment equipment for livestock and poultry wastewater according to claim 1, characterized in that: the aerobic reactant (16) is aerobic granular sludge. 4. The biological treatment equipment for livestock and poultry wastewater according to claim 1, characterized in that: the aerobic reactant (16) is a biological carrier. 5. The biological treatment equipment for livestock and poultry wastewater according to claim 1, characterized in that: the floating ball (12) is made of rubber material. 6. The biological treatment equipment for livestock and poultry wastewater according to claim 1, characterized in that: the floating ball (12) is made of glass material. 7. The biological treatment equipment for livestock and poultry wastewater according to claim 1, characterized in that: the floating ball (12) is made of stainless steel. 8. The biological treatment equipment for livestock and poultry wastewater according to claim 1, characterized in that: the anaerobic treatment device (30) also includes a gas collection ring (19), and the gas collection ring (19) is fixed on the On the inner wall of the upper end of the upper cylinder (3-1). 9. The biological treatment equipment for livestock and poultry wastewater according to claim 8, characterized in that the cross-section of the gas gathering ring (19) is triangular. 10. A biological treatment equipment for livestock and poultry wastewater according to claim 1, 8 or 9, characterized in that: the anaerobic treatment device (30) also includes a water distribution plate (2), and the water distribution plate (2 ) has a plurality of holes (2-1) uniformly on the circular surface, and the water distribution plate (2) is installed in the lower anaerobic reaction cylinder (3) and is located between the upper cylinder (3-1) and the lower cylinder (3-2) Interchange.

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