CN213012483U

CN213012483U - UASB sewage treatment plant

Info

Publication number: CN213012483U
Application number: CN202021609597.7U
Authority: CN
Inventors: 陈国真
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-04-20
Anticipated expiration: 2030-08-06

Abstract

The utility model discloses a UASB sewage treatment device in the technical field of sewage treatment, which comprises a first water inlet pipe and a pretreatment box, the left end flange of the first water inlet pipe is connected with a pretreatment box, the left end of the first water inlet pipe is fixedly provided with a first electric valve, a filter bag is fixedly arranged on the lower side wall of the inner cavity of the pretreatment tank, a first water outlet pipe is connected with the lower flange of the right side wall of the pretreatment tank, the left end of first outlet pipe is fixed and is provided with second electric valve, the upside pipe connection of the left side wall of preliminary treatment case has acid-base neutralization chamber, the utility model relates to a rationally, the cobblestone supporting layer makes the muddy water that the distribution of intaking evenly makes and mixes more fully, and the anaerobic sludge layer mixes has oyster shell powder, and it is stable in between 7-8 that there is a large amount of calcium carbonate pH value in the reactor in the oyster shell, and it is simple and convenient no longer to need to adjust the pH value management in the management and control reactor.

Description

UASB sewage treatment plant

Technical Field

The utility model relates to a sewage treatment field specifically is a UASB sewage treatment plant.

Background

The UASB reactor is an upflow anaerobic sludge blanket reactor for short, the treatment process of the reactor is widely applied in the treatment of high-concentration organic industrial wastewater in the beginning of the last 80 th century, and the novel wastewater anaerobic biological treatment process with wide application mainly comprises a reactor main body, a water distribution area, a sludge suspension area, a three-phase separator, a methane collection device and the like.

The pH value in the UASB reactor is poor in regulation and control capability. The decomposition of organic substances in UASB reactors can be mainly divided into three stages: the hydrolysis stage, the hydrogen acid production stage and the methanogenesis stage are respectively completed by corresponding hydrolysis bacteria, hydrogen acid production bacteria and methanogenesis bacteria, wherein the reaction processes of the hydrolysis stage and the hydrogen acid production stage are fast, so the speed of the methanogenesis stage determines the speed of the whole reaction process, and how to ensure the high efficiency of the methanogenesis bacteria becomes the key problem of the whole reaction process. Because acid production and dehydrogenation stages exist, the pH value is easy to drop, methanogens are not only strict specific anaerobic bacteria, but also have narrow proper pH value range, and the optimal pH value is 6.5-7.7, so that the methanogens are inhibited due to the drop of the pH value, the water quality is deteriorated, the pH value of inlet water needs to be controlled and adjusted in the practical application process, the operation management is troublesome, and if the bottom of the UASB reactor adopts a plurality of thin water inlet holes, the blockage phenomenon is easy to occur; if the thick and few water inlet holes are adopted, the water distribution is uneven, the mud and water contact is uneven, and dead corners are easy to exist; therefore, the conventional UASB reactor has insufficient mixing of sludge and water and complicated operation management, and a UASB sewage treatment device is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a UASB sewage treatment plant to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a UASB sewage treatment plant comprises a first water inlet pipe and a pretreatment box, wherein the left end of the first water inlet pipe is connected with the pretreatment box through a flange, a first electric valve is fixedly arranged at the left end of the first water inlet pipe, a filter bag is fixedly arranged on the lower side wall of an inner cavity of the pretreatment box, a first water outlet pipe is connected with the lower side flange of the right side wall of the pretreatment box, a second electric valve is fixedly arranged at the left end of the first water outlet pipe, an acid-base neutralization chamber is connected with the upper side pipeline of the left side wall of the pretreatment box, a second water pump is fixedly connected with the lower side of the left side wall of the acid-base neutralization chamber, a second water inlet pipe is fixedly connected with the left end of the second water pump, a third electric valve is fixedly arranged at the upper end of the second water inlet pipe, a reaction chamber is connected with the upper end pipeline of the second water inlet pipe, a cobblestone supporting layer is fixedly arranged on the lower side wall of an inner cavity of the reaction chamber, an anaerobic sludge layer is fixedly arranged on the upper side wall of the cobblestone supporting layer, a plurality of baffles are fixedly arranged in the middle of the rear side wall of the inner cavity of the reaction chamber, a guide plate is fixedly arranged in the middle of the rear side wall of the inner cavity of the reaction chamber, a waterproof breathable layer is fixedly arranged on the upper side wall of the inner cavity of the reaction chamber, an air outlet is formed in the upper side wall of the reaction chamber, an air guide pipe is connected to the flange of the upper side wall of the reaction chamber, a gas collection tank is connected to the right end of the air guide pipe in a connecting mode, an automatic cleaning device is fixedly arranged on the upper side of the right side wall of the reaction chamber, a water outlet is formed in the middle of the right side wall of the reaction chamber, a control panel is, the intelligent controller is electrically connected with the first electric valve, the second water pump and the third electric valve respectively.

Preferably, the fixed acid-base detector that is provided with of inner chamber of acid-base neutralization chamber, the left side wall pipe connection of acid-base neutralization chamber has the solution accumulator, the solution accumulator embeds there is solution, the first water pump of downside fixedly connected with of the left side wall of solution accumulator, intelligent control ware respectively with acid-base detector and first water pump electric connection.

Preferably, the middle of the upper side wall of the guide plate is fixedly provided with a guide hole, and the middle of the upper side wall of the guide plate is fixedly provided with a filter screen.

Preferably, the upside of the right side wall of the reaction chamber is fixedly provided with a third water inlet pipe, the lower end of the third water inlet pipe is fixedly connected with a spray header, the right end of the third water inlet pipe is fixedly connected with a third water pump, and the third water pump is electrically connected with the intelligent controller.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to a rationally, the cobblestone supporting layer makes the even muddy water that makes of distribution of intaking mix more fully, anaerobic sludge layer mixes there is oyster shell powder, there is a large amount of calcium carbonate in the oyster shell to make the pH value in the reactor stabilize between 7-8, it is no longer simple and convenient to adjust the pH value management in the management and control reactor, secondly use oyster shell powder to be favorable to granular sludge's formation as the core, the biology uses oyster shell powder as the core, through the formation granular sludge who forms at the final attached growth on granular surface, reflux unit is under UASB device start-up stage or the unstable condition of waste water production, both can guarantee to have stable water source and upper stream speed in the reactor, make waste water and anaerobic granular sludge intensive mixing all the time, thereby guarantee the normal operating of reactor.

Drawings

FIG. 1 is a schematic view of the overall structure of a UASB sewage treatment plant of the present invention;

FIG. 2 is a schematic diagram of the pretreatment structure of a UASB sewage treatment apparatus of the present invention;

FIG. 3 is a schematic structural view of a guide plate of a UASB sewage treatment plant of the present invention;

fig. 4 is a schematic structural view of an automatic cleaning device of a UASB sewage treatment plant of the present invention.

In the figure: 1. a first water inlet pipe; 2, a pretreatment box; 3. a first electrically operated valve; 4. a filter bag; 5. a control panel; 6. an intelligent controller; 7. a first water outlet pipe; 8. a second electrically operated valve; 9. an acid-base neutralization chamber; 10. an acid-base detector; 11. a solution reservoir; 12. a solution; 13. a first water pump; 14. a second water pump; 15. a second water inlet pipe; 16. a reaction chamber; 17. a water inlet; 18. a third electrically operated valve; 19. a cobble supporting layer; 20. an anaerobic sludge blanket; 21. a baffle plate; 22. a baffle; 23. a waterproof breathable layer; 24. an air outlet; 25. an air duct; 26. a gas collection tank; 27. an automatic cleaning device; 28. a water outlet; 29. a flow guide pipe; 30. an overflow port; 31. a backflow water tank; 32. a return pipe; 33. a shower head; 34. a third water inlet pipe; 35. a third water pump; 36. a filter screen; 37. and (4) flow guide holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a UASB sewage treatment device as shown in figures 1-4, which comprises a first water inlet pipe 1 and a pretreatment tank 2, the left end flange of the first water inlet pipe 1 is connected with the pretreatment tank 2, the left end of the first water inlet pipe 1 is fixedly provided with a first electric valve 3, the lower side wall of the inner cavity of the pretreatment tank 2 is fixedly provided with a filter bag 4, the lower side flange of the right side wall of the pretreatment tank 2 is connected with a first water outlet pipe 7, the left end of the first water outlet pipe 7 is fixedly provided with a second electric valve 8, the upper side pipeline of the left side wall of the pretreatment tank 2 is connected with an acid-base neutralization chamber 9, the lower side of the left side wall of the acid-base neutralization chamber 9 is fixedly connected with a second water pump 14, the left end of the second water pump 14 is fixedly connected with a second water inlet pipe 15, the upper end of the second water inlet pipe 15 is fixedly provided with a third electric valve 18, the, a water inlet 17 is arranged on the lower side wall of the reaction chamber 16, a cobble supporting layer 19 is fixedly arranged on the lower side wall of the inner cavity of the reaction chamber 16, an anaerobic sludge layer 20 is fixedly arranged on the upper side wall of the cobble supporting layer 19, a plurality of baffle plates 21 are fixedly arranged in the middle of the rear side wall of the inner cavity of the reaction chamber 16, a guide plate 22 is fixedly arranged in the middle of the rear side wall of the inner cavity of the reaction chamber 16, a waterproof breathable layer 23 is fixedly arranged on the upper side wall of the inner cavity of the reaction chamber 16, an air outlet 24 is arranged on the upper side wall of the reaction chamber 16, an air duct 25 is connected to the flange of the upper side wall of the reaction chamber 16, a gas collecting tank 26 is connected to the right end of the air duct 25 in a connecting manner, an automatic cleaning device 27 is fixedly arranged on the upper side wall of the right side wall of the reaction chamber 16, a water outlet 28 is arranged in the middle of, the intelligent controller 6 is respectively electrically connected with the first electric valve 3, the second electric valve 8, the second water pump 14 and the third electric valve 18, the pretreatment is that a filter bag 4 made of filter cloth is fixed in the pretreatment tank 2, the surface of the filter cloth has good smoothness and high wear resistance, the filter cloth has higher strength and better wear resistance after splicing, thereby the fabric has good air permeability, high water leakage and convenient cleaning, the filter bag is vertically arranged in a pretreatment area, the filter bag plays a role in filtering and intercepting suspended matters in inlet water, the cobble supporting layer 19 ensures that the inlet water is uniformly distributed to ensure that the muddy water is more fully mixed, the anaerobic sludge layer 20 is mixed with oyster shell powder, a large amount of calcium carbonate in the oyster shell can ensure that the pH value in the reactor is stabilized between 7 and 8, the regulation of the pH value in the control reactor is not needed any more, the management is simple and convenient, the oyster shell powder is taken as the core to be beneficial to the generation of granular sludge, and organisms take the oyster shell powder, the resulting formed granular sludge grows by attachment to the surface of the granules.

An acid-base detector 10 is fixedly arranged in an inner cavity of the acid-base neutralization chamber 9, a left side wall pipeline of the acid-base neutralization chamber 9 is connected with a solution storage 11, a solution 12 is arranged in the solution storage 11, a first water pump 13 is fixedly connected to the lower side of the left side wall of the solution storage 11, the intelligent controller 6 is electrically connected with the acid-base detector 10 and the first water pump 13 respectively, the solution 12 in the solution storage 11 is an alkaline solution when the acidic sewage is treated, and when the detected value is lower than a set value, a signal is sent to the first water pump 13 to realize that the first water pump 13 pumps the solution 12 to the solution storage 11;

a flow guide hole 37 is fixedly arranged in the middle of the upper side wall of the flow guide plate 22, a filter screen 36 is fixedly arranged in the middle of the upper side wall of the flow guide plate 22, the whole shape of the flow guide plate 22 is in a conical surface shape from bottom to top, the flow guide hole 37 is arranged in the center of the flow guide plate 22, and sewage flows through the filter screen 36 from outside to inside through the flow guide hole 37 from bottom to top through the conical surface of the flow guide plate 22;

a third water inlet pipe 34 is fixedly arranged on the upper side of the right side wall of the reaction chamber 16, the lower end of the third water inlet pipe 34 is fixedly connected with a spray header 33, the right end of the third water inlet pipe 34 is fixedly connected with a third water pump 35, the third water pump 35 is electrically connected with the intelligent controller 6, the intelligent controller 6 starts the third water pump 35 to work, the spray header 33 starts to spray water to clean the filter screen 36, and the filter screen is prevented from being blocked;

the middle flange of the right side wall of the reaction chamber 16 is connected with a guide pipe 29, the lower end flange of the guide pipe 29 is connected with a backflow water tank 31, the right side wall of the backflow water tank 31 is provided with an overflow opening 30, the lower side wall flange of the backflow water tank 31 is connected with a backflow pipe 32, the lower end flange of the backflow pipe 32 is connected with a second water inlet pipe 15, and the backflow device can ensure that a stable water source and an upper flow speed are arranged in the reactor under the condition that the UASB device is started or the wastewater production is unstable, so that the wastewater and anaerobic granular sludge are fully mixed all the time, and the normal operation of the reactor is ensured.

The working principle is as follows: sewage firstly enters a pretreatment area, is filtered by a filter bag 4, large granular substances and partial organic matters are intercepted in the left side of the filter bag 4, the pretreated sewage enters an acid-base neutralization chamber 9, an acid-base detector 10 detects the pH value of the sewage in the acid-base neutralization chamber 9, when the detected value is lower than a set value, a signal is sent to a first water pump 13, the first water pump 13 works to pump a solution 12 into a solution storage 11 until the first water pump 13 stops working when the sewage solution is neutral, the neutral sewage solution enters a reaction chamber 16, permeates a cobble supporting layer 19 at the bottom of the reaction chamber 16 and is mixed with an anaerobic sludge layer 20, because oyster shell powder filling materials are mixed in the anaerobic sludge layer 20, anaerobic organisms in the anaerobic sludge 20 take oyster shell powder as a core, and finally form granular sludge through growth attached to the surface of the oyster shell powder, the wastewater flows from bottom to top at a certain flow rate and contacts with the wastewater and anaerobic sludge to generate anaerobic reaction and generate methane, so that the anaerobic sludge layer 20 is disturbed and drives the granular sludge to rise, a stirring effect is formed, the wastewater and the anaerobic sludge are fully mixed, organic matters are adsorbed and decomposed, the methane flows through the conical surface of the guide plate 22 from bottom to top through the guide holes 37 and flows through the filter screen 36, the granular sludge is settled back to the anaerobic sludge layer 20 through the filter screen 36, the methane rises and enters the gas collecting tank 26 from the gas guide tube 25 through the waterproof breathable layer 23 to be collected, part of the filtered sewage flows back to the second water inlet tube 15 through the backflow device, and part of the filtered sewage is discharged through the overflow port 30.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a UASB sewage treatment plant, includes first inlet tube (1) and preliminary treatment case (2), its characterized in that: the left end of the first water inlet pipe (1) is connected with a pretreatment tank (2) through a flange, the left end of the first water inlet pipe (1) is fixedly provided with a first electric valve (3), the lower side wall of the inner cavity of the pretreatment tank (2) is fixedly provided with a filter bag (4), the lower side of the right side wall of the pretreatment tank (2) is connected with a first water outlet pipe (7) through a flange, the left end of the first water outlet pipe (7) is fixedly provided with a second electric valve (8), the upper side pipeline of the left side wall of the pretreatment tank (2) is connected with an acid-base neutralization chamber (9), the lower side of the left side wall of the acid-base neutralization chamber (9) is fixedly connected with a second water pump (14), the left end of the second water pump (14) is fixedly connected with a second water inlet pipe (15), the upper end of the second water inlet pipe (15) is fixedly provided with a third electric valve (18), the upper end pipeline of the second water inlet pipe, a water inlet (17) is formed in the lower side wall of the reaction chamber (16), a cobble supporting layer (19) is fixedly arranged on the lower side wall of an inner cavity of the reaction chamber (16), an anaerobic sludge layer (20) is fixedly arranged on the upper side wall of the cobble supporting layer (19), a plurality of baffle plates (21) are fixedly arranged in the middle of the rear side wall of the inner cavity of the reaction chamber (16), a guide plate (22) is fixedly arranged in the middle of the rear side wall of the inner cavity of the reaction chamber (16), a waterproof breathable layer (23) is fixedly arranged on the upper side wall of the inner cavity of the reaction chamber (16), an air outlet (24) is formed in the upper side wall of the reaction chamber (16), an air guide pipe (25) is connected to the flange of the upper side wall of the reaction chamber (16), a gas collection tank (26) is connected to the right end of the air guide pipe (25), and an automatic cleaning device (27, the utility model discloses a reaction chamber, including reaction chamber (16), the middle of the right side wall of reaction chamber (16) has seted up delivery port (28), the fixed control panel (5) that are provided with in the middle of the left side wall of reaction chamber (16), the preceding lateral wall of the inner chamber of control panel (5) is fixed and is provided with intelligent control ware (6), intelligent control ware (6) respectively with first electric valve (3), second electric valve (8), second water pump (14) and third electric valve (18) electric connection.

2. A UASB sewage treatment apparatus according to claim 1, wherein: the fixed acid-base detector (10) that is provided with of inner chamber of acid-base neutralization chamber (9), the left side wall pipe connection of acid-base neutralization chamber (9) has solution accumulator (11), solution accumulator (11) embeds there is solution (12), the first water pump (13) of downside fixedly connected with of the left side wall of solution accumulator (11), intelligent control ware (6) respectively with acid-base detector (10) and first water pump (13) electric connection.

3. A UASB sewage treatment apparatus according to claim 1, wherein: the middle of the upper side wall of the guide plate (22) is fixedly provided with a guide hole (37), and the middle of the upper side wall of the guide plate (22) is fixedly provided with a filter screen (36).

4. A UASB sewage treatment apparatus according to claim 1, wherein: the upper side of the right side wall of the reaction chamber (16) is fixedly provided with a third water inlet pipe (34), the lower end of the third water inlet pipe (34) is fixedly connected with a spray header (33), the right end of the third water inlet pipe (34) is fixedly connected with a third water pump (35), and the third water pump (35) is electrically connected with the intelligent controller (6).

5. A UASB sewage treatment apparatus according to claim 1, wherein: the middle flange of the right side wall of the reaction chamber (16) is connected with a flow guide pipe (29), the lower end flange of the flow guide pipe (29) is connected with a backflow water tank (31), the right side wall of the backflow water tank (31) is provided with an overflow opening (30), the lower side wall flange of the backflow water tank (31) is connected with a backflow pipe (32), and the lower end flange of the backflow pipe (32) is connected with a second water inlet pipe (15).