CN115353199A - Anaerobic reactor and reaction system - Google Patents

Abstract

The invention provides an anaerobic reactor and a reaction system, relating to the technical field of water treatment, wherein the anaerobic reactor comprises: the jar body with set up in jar internal compartment. The top of the tank body is provided with a water inlet, the tank body is internally provided with a water inlet area and a water outlet area, and the water inlet is communicated with the water inlet area. The separation chamber is internally provided with a separation zone and a reaction zone, the reaction zone is divided into a plurality of pre-reaction chambers by baffle plates, the pre-reaction chamber at the starting end is communicated with the water inlet zone, and the pre-reaction chamber at the tail end is communicated with the separation zone; the separation area is used for separating the mud-water mixture and obtaining sludge and purified water. The lifting device is used for lifting the sludge in the separation area to the water inlet area. Utilize the baffling board cooperation to set up in the water inlet of tank deck, form reciprocating type water inlet mode, avoided the pipeline among the prior art to block up easily, the uneven scheduling problem of water distribution. Set up hoisting device simultaneously and promote mud for each regional homoenergetic in jar can take place anaerobic reaction, improves the throughput.

Description

Anaerobic reactor and reaction system

Technical Field

The invention relates to the technical field of water treatment, in particular to an anaerobic reactor and a reaction system.

Background

Anaerobic treatment, which is totally called anaerobic biological treatment. The method is a treatment method for biochemically degrading organic matters by taking anaerobic microorganisms as main bodies under an anoxic condition. The treatment objects comprise high-concentration organic industrial wastewater, sludge of town sewage, animal and plant residues, excrement and the like.

Anaerobic reactors are the carriers of anaerobic treatment technology, and common anaerobic reactors in the prior art include an upflow anaerobic sludge blanket reactor (UASB), an Anaerobic Baffled Reactor (ABR) and an internal circulation anaerobic reactor (IC). Wherein the UASB reactor comprises a sludge reaction area, a three-phase separator and a gas chamber, and the bottom of the UASB reactor is provided with a water pipeline. The wastewater enters the bottom of the reactor through the water distribution system and then continuously flows upwards to pass through the reaction zone, the reaction zone mainly comprises anaerobic activated sludge, and organic matters in the wastewater are degraded by anaerobic microorganisms in the reaction zone and finally converted into methane and carbon dioxide to form methane bubbles. The mixed liquid formed by the methane bubbles, the wastewater and the sludge continuously enters the three-phase separator upwards, the methane bubbles are collected in the three-phase separator and then enter the gas-collecting hood and then are discharged out of the reactor, the sludge is intercepted by the three-phase separation and returns to the reaction zone, and the wastewater continuously enters the settling zone upwards and finally is discharged out of the reactor. The principle of the ABR reactor is that a series of baffle plates which are vertically arranged are used, so that waste water moves in the baffle plates under the pushing of air stripping, and a three-phase separator is not required. The IC reactor is formed by connecting two layers of UASB reactors in series, and similarly, a water inlet pipeline is arranged at the bottom of the IC reactor, and a two-stage reaction area and a two-stage three-phase separator are arranged above the IC reactor.

However, in the prior art, because the reactor mostly adopts a mode of arranging a water inlet pipe at the bottom to feed water, the bottom is easy to block and the water feeding is not uniform; meanwhile, the sludge retention is poor.

Disclosure of Invention

The invention aims to solve the following problems: the bottom of the existing reactor is easy to block and the water inlet is not uniform.

(II) technical scheme

In order to solve the above technical problems, an embodiment of an aspect of the present invention provides an anaerobic reactor, including: the device comprises a tank body, a separation bin and a lifting device; the separation bin is arranged in the tank body;

the top of the tank body is provided with a water inlet, a water inlet area and a water outlet area are arranged in the tank body, and the water inlet is communicated with the water inlet area;

a separation zone and a pre-reaction zone are arranged in the separation bin, the pre-reaction zone is divided into a plurality of pre-reaction chambers by baffle plates, the pre-reaction chamber at the starting end is communicated with the water inlet zone, and the pre-reaction chamber at the tail end is communicated with the separation zone;

the separation zone is used for separating the mud-water mixture and obtaining sludge and purified water, and the purified water enters the water outlet zone;

the lifting device is used for lifting the sludge in the separation area to the water inlet area.

Furthermore, a communicating structure is arranged at the lower end of the separation area, a water discharging pipeline is arranged at the upper end of the separation area, and a mud-water separation structure is arranged between the communicating structure and the water discharging pipeline;

still be equipped with main reaction zone in the tank body, main reaction zone with be located the end the pre-reaction chamber intercommunication, the intercommunication structure intercommunication the disengagement zone with main reaction zone, the drain line is kept away from the one end of disengagement zone with go out the basin intercommunication.

Further, the mud-water separation structure comprises a filler support and an inclined pipe filler;

the filler support is connected with the inner wall of the separation area, and the inclined tube filler is arranged in the filler support.

Furthermore, a second overflowing hole which is communicated with the water inlet area and the pre-reaction area is arranged between the water inlet area and the pre-reaction area, and the second overflowing hole is positioned at the bottom of the water inlet area.

Further, a sludge area is also arranged in the tank body;

the lower end of the separation area is communicated with the sludge area, and the sludge intercepted by the separation area can flow back to the sludge area;

the sludge area is provided with the lifting device, and the lifting device lifts the mud-water mixture in the sludge area to the water inlet area.

Furthermore, the lifting device is arranged between the water outlet area and the water inlet area;

the lifting device lifts the purified water in the water outlet area to the water inlet area.

The methane gas lifting device comprises a gas lifting device, and the gas source is communicated with the gas lifting device and provides methane for the gas lifting device;

the marsh gas in the gas source is from marsh gas generated in the pre-reaction zone, the main reaction zone, the water inlet zone, the water outlet zone, the separation zone and the sludge zone during reaction.

Further, the device also comprises an aeration device, wherein the aeration device is communicated with the gas source, and the gas source provides gas for the aeration device;

the aeration device covers the bottom walls of the pre-reaction zone, the main reaction zone, the water inlet zone, the water outlet zone, the separation zone and the sludge zone.

Further, a partition board is arranged in the tank body, and divides the tank body into a plurality of independent treatment areas;

each treatment area is internally provided with the compartment, and the sludge area, the main reaction area, the water inlet area and the water outlet area which are arranged corresponding to the compartment are arranged in each treatment area; all the treatment zones are communicated with the gas source, and the water inlet zone, the water outlet zone, the pre-reaction zone, the main reaction zone, the separation zone and the sludge zone in each treatment zone are provided with the aeration devices; the air stripping devices are arranged between the sludge zone and the water inlet zone and between the water outlet zone and the water inlet zone in each treatment zone; the gas source is provided with a plurality of branches which are arranged corresponding to the processing areas, and the gas stripping device and the aeration device in each processing area are communicated with the corresponding branches.

In another aspect, the present invention further provides a reaction system including the anaerobic reactor according to any one of the above embodiments.

The invention has the beneficial effects that:

the invention provides an anaerobic reactor, which comprises: the device comprises a tank body, a separation bin and a lifting device; the separation chamber is arranged in the tank body. The top of the tank body is provided with a water inlet, a water inlet area and a water outlet area are arranged in the tank body, and the water inlet is communicated with the water inlet area; the separation chamber is internally provided with a separation zone and a reaction zone, the reaction zone is divided into a plurality of pre-reaction chambers by baffle plates, the pre-reaction chamber at the starting end is communicated with the water inlet zone, and the pre-reaction chamber at the tail end is communicated with the separation zone; the separation zone is used for separating the mud-water mixture and obtaining sludge and purified water, and the purified water enters the water outlet zone; the lifting device is used for lifting the sludge in the separation area to the water inlet area.

According to the anaerobic reactor provided by the invention, the water inlet area is arranged in the tank body, the water inlet is formed in the top of the tank, wastewater is injected into the water inlet area, and the pre-reaction chambers separated by the baffle plates are arranged to form a reciprocating water inlet mode, so that the problem of uneven water distribution caused by easy blockage of a water inlet pipeline in the prior art is solved; simultaneously, mud-water separation adopts immersive separation, makes mud stay in the reactor all the time, and separation efficiency is high-efficient to, set up hoisting device and promote mud to the district of intaking, make each region homoenergetic take place to react, improve throughput.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a plan view of an anaerobic reactor provided by an embodiment of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view taken from perspective A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken at view B-B of FIG. 1;

FIG. 4 is a cross-sectional view at view C-C of FIG. 1;

FIG. 5 is an internal view of an anaerobic reactor provided in accordance with an embodiment of the present invention;

FIG. 6 is a flow diagram of an anaerobic reactor provided by embodiments of the present invention.

An icon: 1-tank body; 11-a water inlet area; 111-a second overflow aperture; 12-a water outlet zone; 13-a baffle; 14-a sludge zone; 15-a biogas collection device; 16-a separator; 17-a primary reaction zone;

2-separating the bins; 21-a pre-reaction zone; 211-baffles; 212-third flow aperture; 22-a separation zone; 222-a filler support; 223-inclined tube packing;

3-an aeration device.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

It should be noted that, in the description of the present invention, the terms "connected" and "mounted" should be interpreted broadly, for example, they may be fixedly connected, detachably connected, or integrally connected; can be directly connected or connected through an intermediate medium; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 6, an embodiment of the present invention provides an anaerobic reactor including: a tank body 1 and a compartment 2; the compartment 2 is arranged in the tank body 1.

The tank body 1 is an enamel splicing tank or a carbon steel anti-corrosion tank, a water inlet is formed in the top of the tank body 1 and is used for being communicated with a wastewater pool, and wastewater to be treated in the wastewater pool passes through a pipeline and enters the tank body 1 from the water inlet under the action of a water pump. The compartment 2 is PP material or stainless steel material, and it is used for separating a plurality of functional areas in the jar body 1.

In this embodiment, a water inlet area 11 and a water outlet area 12 are arranged in the tank body 1, and the water inlet is communicated with the water inlet area 11. Waste water flows out from the water inlet and enters into the water inlet area 11, the water inlet area 11 is positioned outside the compartment 2, and the waste water is formed by matching the baffle 13 with the outer side wall of the compartment 2 in the tank body 1.

A separation zone 22 and a pre-reaction zone 21 are arranged in the compartment 2. In this embodiment, the separation zone 22 and the pre-reaction zone 21 are disposed therebetween. A plurality of baffle plates 211 are provided in the pre-reaction zone 21, and the baffle plates 211 divide the interior of the pre-reaction zone 21 into a plurality of pre-reaction chambers which are spaced and communicated with each other. The pre-reaction chamber is internally provided with sludge for anaerobic reaction, and the sludge can be selected from granular sludge and flocculent sludge. The pre-reaction chamber at the starting end is communicated with the water inlet area 11, wastewater in the water inlet area 11 enters the pre-reaction chamber at the starting end, the wastewater is mixed with sludge in the pre-reaction chamber, and a formed sludge-water mixture continuously flows under the action of the baffle plate 211; the pre-reaction chamber at the tail end is communicated with the separation area 22, and when the muddy water mixture reaches the pre-reaction chamber at the tail end, the muddy water mixture enters the separation area 22 again; the separation zone 22 is used to separate a slurry-water mixture. The sludge-water mixture is separated in the separation zone 22 to provide clarified purified water and sludge, the clarified purified water entering the effluent zone 12.

The lifting device is used for lifting the sludge separated from the separation area 22 into the water inlet area 11, and is used for supplementing the amount of the sludge in the water inlet area 11 and improving the treatment efficiency.

In this embodiment, the sludge in the inlet water zone 11 is optionally derived from sludge separated by the separation zone 22. After entering the water inlet area 11 from the water inlet, the wastewater is mixed and reacted with the sludge in the water inlet area 11, and the formed mud-water mixture flows into the pre-reaction area 21 through the second overflowing hole 111 and continuously flows along each pre-reaction chamber under the action of the baffle plate 211. A second overflowing hole 111 is arranged between the water inlet area 11 and the pre-reaction chamber, preferably, the second overflowing hole 111 is positioned at the bottom of the water inlet area 11, after wastewater enters the water inlet area 11 from the water inlet, the wastewater gradually fills the water inlet area 11, and part of the wastewater enters the pre-reaction chamber positioned at the starting end from the second overflowing hole 111; since the second overflowing hole 111 is located at the bottom of the water inlet region 11, correspondingly, the wastewater in the pre-reaction chamber at the starting end inevitably flows into the next pre-reaction chamber from the upper end of the baffle plate 211, and under the action of the baffle plate 211, the mud-water mixture continuously flows along the pre-reaction chamber until flowing into the separation region 22.

In the present embodiment, by disposing the second overflowing hole 111 at the bottom of the water inlet region 11, a dead water region can be prevented from being formed in the anaerobic reactor, and the reaction effect can be improved.

Alternatively, in this embodiment, the second overflowing hole 111 may be formed by the baffle 211, or may be formed by opening a hole in the compartment 2.

Meanwhile, the second overflowing hole 111 is arranged at the bottom of the water inlet area 11, so that the wastewater flows in a reciprocating mode, the wastewater and the sludge are uniformly mixed, and the reaction is more thorough.

Optionally, in this embodiment, separation area 22 is used to separate a mixture of mud and water, and the mixture of mud and water is separated into clarified purified water and sludge by separation area 22, and the sludge falls under the action of gravity. Optionally, a part of the sludge may be discharged from the anaerobic reactor through a sludge discharge pipe, and a part of the sludge may be lifted into the water inlet zone 11 through the lifting device to continue to react with the wastewater; while the clarified water drains through a drain to the outlet area 12.

In this embodiment, the purpose of discharging a part of the sludge out of the anaerobic reactor is to control the sludge age of the sludge, and to discharge aged sludge so that the activity of microorganisms in the sludge in the anaerobic reactor is maintained at a high value.

Optionally, a portion of the purified water from the effluent zone 12 enters the next process stage and a portion of the purified water is returned to the influent zone 11 via a lift device, as will be described in more detail below.

According to the anaerobic reactor provided by the embodiment of the invention, the water inlet area 11 is arranged in the tank body 1, the water inlet is arranged at the top of the tank, and the pre-reaction chamber separated by the baffle plate 211 is arranged at the same time, so that reciprocating water inlet is realized, and the problem of uneven water distribution caused by easy blockage of a water inlet pipeline in the prior art is solved. And because the wastewater flows in a reciprocating manner in the anaerobic reactor, the reaction is sufficient, and simultaneously, the sludge-water separation adopts immersion separation, so that the sludge is always left in the reactor, and the separation efficiency is high.

In this embodiment, in order to ensure the tightness of the compartment 2, the sludge separated by the separation zone 22 is lifted to the water inlet zone 11 by the lifting device.

In this embodiment, the sludge obtained from the separation zone 22 is lifted to the water inlet zone 11 to supplement the amount of sludge in the water inlet zone 11, so that the activity of the sludge in the water inlet zone 11 is maintained at a high value, and the reaction can be performed normally.

Optionally, in this embodiment, before the anaerobic reactor is started, external sludge needs to be inoculated, and the anaerobic reactor is debugged and then normally operated.

As shown in fig. 1 to 6, the separation area 22 is provided at a lower end thereof with a communication structure and at an upper end thereof with a drain line, and a mud-water separation structure is provided between the communication structure and the drain line. The reactor comprises a tank body 1, and is characterized in that a main reaction zone 17 is further arranged in the tank body 1, the main reaction zone 17 is formed by matching a baffle 13, a partition 16 and the outer side wall of a compartment 2, the main reaction zone 17 is communicated with a pre-reaction chamber positioned at the tail end, optionally, the main reaction zone 17 is communicated with the pre-reaction chamber positioned at the tail end through a baffle plate 211, and also can be communicated through an overflowing hole.

The communicating structure communicates with the main reaction zone 17 and the separation zone 22, and the end of the drainage pipeline away from the separation zone 22 communicates with the water outlet zone 12.

In this embodiment, after the slurry-water mixture enters the separation area 22 through the communication structure at the lower end of the separation area 22, the slurry-water mixture flows upward in the separation area 22 and enters the slurry-water separation structure under the urging of the subsequent slurry-water mixture, the slurry-water separation structure separates the slurry-water mixture, the sludge settles at the lower end of the slurry-water separation structure, clarified purified water is generated at the upper end of the slurry-water separation structure, and the clarified purified water enters the water outlet area 12 through the water outlet pipe.

In this embodiment, the sludge-water separation adopts the immersion type separation, so that the sludge is always kept in the reactor, and the separation efficiency is high.

In this embodiment, the main reaction zone 17 having a large space is formed in the tank 1, thereby improving the reaction efficiency.

Optionally, in this embodiment, the compartment 2 is located in the middle of the tank 1, one side of the tank 1 is provided with a water inlet area 11, the other side of the tank is provided with a main reaction area 17, and a separation area 22 is arranged between the main reaction area 17 and the water inlet area 11.

Optionally, the side opposite to the water inlet area 11 is set as the main reaction area 17, so that a dead water area can be avoided from being formed, anaerobic reaction of organic matters in the wastewater can be facilitated, and the activity of sludge can be maintained.

Optionally, a third overflowing hole 212 is formed at the upper end of the main reaction zone 17, and the third overflowing hole 212 is used for communicating with a pre-reaction chamber at the end.

As shown in fig. 1 to 6, the mud-water separation structure includes a packing support 222 and a pipe chute packing 223. The packing support 222 is connected with the inner wall of the separation area 22, and the inclined tube packing 223 is arranged in the packing support 222.

In this embodiment, the inclined tube filling 223 is applied in the anaerobic reactor, so that the settling efficiency is high, and the sludge can be effectively retained in the anaerobic reactor. The sludge in the sludge-water mixture obtained after the wastewater is fully mixed and reacted in the pre-reaction zone 21 and the main reaction zone 17 can be intercepted and reflowed to the sludge zone 14 by utilizing the high-efficiency sedimentation capability of the inclined tube filler 223. The sludge in the sludge zone 14 and the wastewater in the sludge zone 14 are lifted to the water inlet zone 11 by the lifting device.

Optionally, in this embodiment, the communicating structure includes a baffle plate and an inclined plate, a gap is provided between the upper end of the baffle plate and the inclined plate, the inclined plate is obliquely disposed in the separation region 22, the slurry-water mixture in the pre-reaction chamber located at the end flows into the separation region 22 through the baffle plate, the inclined plate is a perforated plate, and the slurry-water mixture permeates through the inclined plate and enters the inclined tube packing 223.

Optionally, the communicating structure may also be a through hole or the like provided in the lower end of the mud-water separation structure.

As shown in fig. 1 to 6, a sludge area 14 is further provided in the tank 1. The lower end of the separation area 22 is communicated with the sludge area 14, and the upper end of the sludge area 14 is communicated with the water inlet area 11. The lifting device is arranged in the sludge area 14 and lifts the mud-water mixture in the sludge area 14 to the water inlet area 11.

In this embodiment, the sludge area 14 is defined by the baffle 13 arranged in the tank body 1 and the side wall of the compartment 2, the lower end of the separation area 22 is provided with a hole communicated with the sludge area 14, the sludge intercepted by the mud-water separation structure flows back into the sludge area 14, and similarly, the sludge area 14 also has a large amount of wastewater. The lifting device is arranged in the sludge area 14, and the mud-water mixture in the sludge area 14 can enter the water inlet area 11 under the action of the lifting device and then flows along the directions of the water inlet area 11, the pre-reaction area 21, the main reaction area 17 and the separation area 22, so that the wastewater and the sludge are fully reacted.

When the anaerobic reactor is used, after the sludge is separated by the separation area 22, the sludge flows back to the sludge area 14, part of the sludge in the sludge area 14 can be lifted to the water inlet area 11 under the action of the lifting device to supplement the amount of the sludge in the water inlet area 11, the sludge area 14 is also provided with a sludge discharge pipeline communicated with the outside, and the sludge discharge pipeline is used for discharging aged sludge in the sludge area 14 to the outside so as to ensure the sludge age of the sludge in the anaerobic reactor.

As shown in fig. 1 to 6, the lifting device is also disposed between the water outlet area 12 and the water inlet area 11. The lifting device between the outlet zone 12 and the inlet zone 11 is used to lift the clean water in the outlet zone 12 into the inlet zone 11.

During the use, the water purification of partial clarification in play water zone 12 is promoted to intake zone 11 by hoisting device, through to intake zone 11 promotion clarification water, can dilute the concentration of organic matter in the waste water, and then reduces the load of mud, avoids causing the dead or activity reduction of microorganism in the mud.

Optionally, in this embodiment, the lifting device disposed between the sludge zone 14 and the water inlet zone 11 and the lifting device disposed between the water outlet zone 12 and the water inlet zone 11 are gas stripping devices, that is, the gas stripping devices include gas stripping pipelines which are connected across the two working zones, so that the sludge in the sludge zone 14 can be lifted to the water inlet zone 11 by filling gas into the gas stripping pipelines, and the purified water in the water outlet zone 12 can be lifted to the water inlet zone 11.

Optionally, in this embodiment, the lifting device may also be lifted by a pump, which can also achieve the purpose of lifting the sludge in the sludge area 14 to the water inlet area 11 and lifting the purified water in the water outlet area 12 to the water inlet area 11 in this embodiment.

Preferably, the gas in the stripping device is biogas.

In this embodiment, the anaerobic reactor further includes a gas source, biogas is stored in the gas source, and the biogas in the gas source is filled into the gas stripping device through a biogas blower to achieve gas stripping.

According to one embodiment of the present invention, biogas can be generated in the effluent zone 12, the inlet zone 11, the pre-reaction zone 21, the primary reaction zone 17, the separation zone 22 and the sludge zone 14 (the anaerobic reaction for generating biogas is a well-known technology), so the biogas in the gas source is generated from each working area in the anaerobic reactor, thereby reducing the production cost.

In this embodiment, the water inlet zone 11, the pre-reaction zone 21, the main reaction zone 17, the separation zone 22 and the sludge zone 14 are all capable of performing anaerobic reactions, so that most of the anaerobic reactors are efficient anaerobic reaction zones, and the treatment capacity is excellent.

In the present embodiment, a biogas collecting device 15 is provided on the top of the tank 1 for collecting biogas. The pre-reaction zone 21, the water inlet zone 11, the water outlet zone 12, the separation zone 22 and the sludge zone 14 are all communicated with the methane collecting device 15. The marsh gas generated in the areas enters the marsh gas collecting device 15 from the gas outlet and is collected by the marsh gas collecting device 15. After the biogas is collected by the biogas collecting device 15, the biogas is supplemented to a gas source, and the gas source fills the biogas into the gas stripping device by using a biogas fan.

Optionally, in this embodiment, the gas source may be a biogas storage cabinet, and the biogas collection device 15 is communicated with the biogas storage cabinet and fills the collected biogas into the biogas storage cabinet.

Optionally, the biogas collecting device 15 is a top space of the tank body 1, and is a conical cabin, the biogas collecting device 15 is provided with a biogas discharge port, and the biogas discharge port is communicated with the gas source.

In this embodiment, the gas stripping device includes a gas stripping pipeline spanning between two working areas, taking the gas stripping pipeline between the water outlet area 12 and the water inlet area 11 as an example, one end of the gas stripping pipeline is communicated with the water inlet area 11, the other end is communicated with the water outlet area 12, an air inlet is arranged at one end of the gas stripping pipeline located at the water outlet area 12, the air inlet is communicated with an air source, and methane is filled into the air inlet through the air source to realize gas stripping. The principle of gas stripping is a known technical means in the field, and is not described in detail here. The stripping circuit between separation region 22 and water inlet region 11 is identical in structure to the stripping circuit between water outlet region 12 and water inlet region 11, and will not be described herein.

Optionally, as shown in fig. 3, an aeration device 3 is further included, the aeration device 3 is communicated with the gas source, and the gas source provides gas for the aeration device 3. The aeration device 3 covers the bottom walls of the pre-reaction zone 21, the main reaction zone 17, the water inlet zone 11, the water outlet zone 12, the separation zone 22 and the sludge zone 14.

In this embodiment, the continuous aeration of the aeration device 3 is set, so that the sludge and the wastewater can be fully stirred and mixed, thereby improving the treatment efficiency. Meanwhile, the aeration device 3 utilizes the methane generated in the anaerobic reactor to carry out aeration, thereby saving the cost and reducing the investment of methane collection at the rear end. Meanwhile, the aeration device 3 completely covers the bottom of each area in the anaerobic reactor, so that the flow velocity in each area is improved to the maximum extent, and no local turbulence and sludge dead zone exist in the system.

In this embodiment, after waste water entered into water district 11, through the continuous aeration of aeration equipment 3, can make mud and waste water intensive mixing, improve mass transfer efficiency.

By arranging the aeration device 3 in the pre-reaction zone 21, sludge and wastewater can fully react, the mass transfer efficiency is improved, and the rising rate of the mud-water mixture is increased, so that the mud-water mixture in the pre-reaction chamber can enter the next pre-reaction chamber at a large flow rate.

The aeration means 3 in the main reaction zone 17 functions in the same way as the aeration means 3 in the pre-reaction zone 21 and will not be described further here.

By providing the aeration device 3 in the separation zone 22, the sludge-water mixture can flow to the upward sludge-water separation structure, and the separation efficiency is improved.

By arranging the aeration device 3 in the sludge area 14, sludge and wastewater in the sludge area 14 can be fully mixed, and the mass transfer efficiency is improved.

In this embodiment, the aeration device 3 may optionally include an aeration hose. The aeration hose is fixed at the bottom of the tank body 1. The aeration hose is communicated with the methane collecting device 15, and a plurality of methane outlets are formed in the aeration hose.

In this embodiment, the aeration device 3 is configured as an aeration hose, so that the aeration amount can be precisely controlled within an optimal range, and an optimal contact environment is created for sludge and wastewater.

Optionally, the aeration hose is installed at the bottom of the tank body 1 in a drawing mode, so that enclosure or replacement is simple and convenient.

It is understood that in the present embodiment, the aeration device 3 may also be an ascending cyclone aerator.

As shown in fig. 1 to 6, a partition 16 is provided in the tank 1, and the partition 16 divides the inside of the tank 1 into a plurality of independent treatment zones. Each treatment area is internally provided with the compartment 2, and is provided with a main reaction area 17, a sludge area 14, a water inlet area 11 and a water outlet area 12 which are arranged corresponding to the compartment 2; the aeration device 3 is arranged in the water inlet area 11, the water outlet area 12, the pre-reaction area 21, the main reaction area 17, the separation area 22 and the sludge area 14 in each treatment area, the air stripping devices are arranged between the sludge area 14 and the water inlet area 11 and between the water outlet area 12 and the water inlet area 11 in each treatment area, the air source is provided with a plurality of branches corresponding to the treatment areas, namely, each treatment area is correspondingly provided with one branch, and the air stripping device and the aeration device 3 in each treatment area are communicated with the corresponding branches.

In this embodiment, optionally, all the processing areas are communicated with the biogas collecting device 15, and the gas source is communicated with the biogas collecting device 15 and supplies gas to any processing area.

Moreover, the processing areas are independently arranged and do not interfere with each other. When extreme conditions are encountered, such as death or reduced activity of microorganisms in the sludge in one of the treatment zones, the sludge may be replenished to the treatment zone in which the condition is present by the other treatment zone. Meanwhile, when the device is used, the number of the start-stop of the treatment area can be selected according to the actual situation so as to deal with the impact load caused by the fluctuation of water quality and water quantity.

Alternatively, as shown in fig. 1 to 6, taking two processing areas as an example, the two processing areas are a first processing area and a second processing area respectively. A partition plate 16 is arranged in the tank body 1, and the inside of the tank body 1 is divided into a first treatment area and a second treatment area which are independent by the partition plate 16.

Optionally, the first treatment area and the second treatment area are independently arranged, so that mutual interference cannot occur in the working process, and meanwhile, structures such as pipelines are arranged between the first treatment area and the second treatment area, for example, when the first treatment area works and the second treatment area does not work, the first treatment area breaks down, and sludge in the first treatment area can be transferred to the second treatment area.

The first treatment area and the second treatment area are both provided with the compartment 2, and are provided with a main reaction area 17, a sludge area 14, a water inlet area 11 and a water outlet area 12 which are arranged corresponding to the compartment 2; the first treatment area and the second treatment area are communicated with the methane collecting device 15, the aeration devices 3 communicated with the methane collecting device 15 are arranged in the compartment 2, the main reaction area 17, the sludge area 14, the water inlet area 11 and the water outlet area 12 of the first treatment area and the second treatment area, and air lifting devices are arranged between the sludge area 14 and the water inlet area 11 of the first treatment area, between the water outlet area 12 and the water inlet area 11, between the sludge area 14 and the water inlet area 11 of the second treatment area and between the water outlet area 12 and the water inlet area 11 of the second treatment area.

Optionally, in this embodiment, the first treatment area and the second treatment area have the same structure, the first treatment area and the second treatment area are both provided with compartments 2, and the two compartments 2 are also both provided with a pre-reaction area 21 and a separation area 22; also, the pre-reaction zone 21 is divided into a plurality of pre-reaction chambers by baffles 211. The first treatment area and the second treatment area are respectively divided into a main reaction area 17, a water inlet area 11, a water outlet area 12 and a sludge area 14 by baffles 13, each area is correspondingly provided with an aeration device 3, and air stripping devices are correspondingly arranged between the water outlet area 12 and the water inlet area 11 and between the sludge area 14 and the water inlet area 11. And the biogas collecting device 15 covers the first treatment area and the second treatment area, biogas generated in the first treatment area and the second treatment area completely enters the biogas collecting device 15, and the biogas collecting device 15 provides gas sources for the gas stripping device and the aeration device 3 in the first treatment area and the second treatment area.

In the embodiment, the anaerobic reactor adopts a dual-modularization design, and a continuous independent operation unit is formed inside the anaerobic reactor.

Optionally, as shown in fig. 1 to 6, two pre-reaction chambers are formed in the compartment 2 through the baffle plate 211, the two pre-reaction chambers are a first pre-reaction chamber and a second pre-reaction chamber, respectively, and the lower end of the water inlet region 11 is communicated with the first pre-reaction chamber through the second through hole 111. When the anaerobic reactor works, wastewater enters the water inlet area 11 from the water inlet, is fully mixed with sludge under the action of the aeration device 3 in the water inlet area 11, part of wastewater mixed sludge enters the first pre-reaction chamber from the second overflowing hole 111 at the bottom, the upper ends of the first pre-reaction chamber and the second pre-reaction chamber are communicated through the baffle plate 211, and under the action of the aeration device 3, a mud-water mixture in the first pre-reaction chamber enters the second pre-reaction chamber in a large flow manner. The lower end of the second pre-reaction chamber is communicated with the separation zone 22, the mud-water mixture enters the separation zone 22, under the action of the aeration device 3, the mud-water mixture quickly rises, under the action of the inclined tube filler 223, the mud and the water are separated to obtain the mud and the purified water, the clarified purified water enters the water outlet zone 12 through the drain pipe, the mud enters the sludge zone 14, and the mud-water mixture in the sludge zone 14 can enter the water inlet zone 11 under the action of the air stripping device and reenters the first pre-reaction chamber for reaction; the purified water in the outlet region 12 is lifted to the inlet region 11 under the action of the gas stripping device to dilute the concentration of the organic matters in the inlet region 11.

Optionally, in this embodiment, the pre-reaction chamber at the end communicates with the main reaction zone 17 through an overflowing hole, the overflowing hole is located at the upper end of the main reaction zone 17, and the baffle plate 211 of the compartment 2 is arranged according to the position of the overflowing hole between the pre-reaction chamber at the end and the main reaction zone 17, so as to avoid forming a dead water zone in the pre-reaction chamber at the end.

In the anaerobic reactor in this embodiment, the travel direction of the sludge-water mixture is a plug-flow type flow state, and each region (the main reaction region 17, the pre-reaction region 21, the separation region 22, the sludge region 14, the water outlet region 12 and the water inlet region 11) is a completely mixed flow state, the overall flow state is between the plug-flow type and the completely mixed flow state, and the flow state is in the angle of reaction kinetics. At the same time, the volume of the reactor required for the composite flow regime is low compared to the volume of a single fully mixed reactor at a certain processing capacity.

Meanwhile, the aeration device 3 is arranged, so that the natural rising flow rate is insufficient, the height of the reactor is adjustable, and the system has no local turbulence and sludge dead zone.

In addition, the anaerobic reactor provided by the embodiment has no three-phase separator design, simplifies the internal structure of the reactor and saves the cost. The immersed separation area 22 is additionally arranged, SS is effectively intercepted, external mixed liquid circulation is not needed, and power consumption is saved.

Moreover, the anaerobic reactor in the embodiment can adopt a low aspect ratio design, so that the investment and operation cost is reduced.

In another embodiment, the invention further provides a reaction system comprising the anaerobic reactor according to any of the above embodiments.

In this embodiment, the reaction system includes a sludge tank, a wastewater tank, a methane tank, and the like. The waste water tank is communicated with the water inlet, and the methane tank is used for storing methane when the pressure in the methane collecting device 15 is overhigh, and the methane tank is also the gas source.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. An anaerobic reactor, comprising: the device comprises a tank body (1), a compartment (2) and a lifting device; the compartment (2) is arranged in the tank body (1);

the top of the tank body (1) is provided with a water inlet, a water inlet area (11) and a water outlet area (12) are arranged in the tank body (1), and the water inlet is communicated with the water inlet area (11);

a separation area (22) and a pre-reaction area (21) are arranged in the separation bin (2), the pre-reaction area (21) is divided into a plurality of pre-reaction chambers through baffle plates (211), the pre-reaction chamber at the starting end is communicated with the water inlet area (11), and the pre-reaction chamber at the tail end is communicated with the separation area (22);

the separation zone (22) is used for separating mud-water mixture and obtaining sludge and purified water, and the purified water enters the water outlet zone (12);

the lifting device is used for lifting the sludge in the separation area (22) to the water inlet area (11).

2. An anaerobic reactor according to claim 1, characterized in that the separation zone (22) is provided with a communicating structure at its lower end and a drain line at its upper end, and a sludge-water separation structure is provided between the communicating structure and the drain line;

the tank body (1) is also internally provided with a main reaction area (17), the main reaction area (17) is communicated with the pre-reaction chamber positioned at the tail end, the communicating structure is communicated with the separation area (22) and the main reaction area (17), and one end of the drainage pipeline, which is far away from the separation area (22), is communicated with the water outlet area (12).

3. An anaerobic reactor according to claim 2, characterized in that the sludge-water separation structure comprises a packing support (222) and a sloped tube packing (223);

the filler support (222) is connected with the inner wall of the separation area (22), and the inclined tube filler (223) is arranged in the filler support (222).

4. An anaerobic reactor according to claim 1, characterized in that a second overflowing hole (111) communicating the water inlet zone (11) and the pre-reaction zone (21) is arranged between the water inlet zone (11) and the pre-reaction zone (21), and the second overflowing hole (111) is positioned at the bottom of the water inlet zone (11).

5. An anaerobic reactor according to claim 1, characterized in that a sludge zone (14) is further provided in the tank (1);

the lower end of the separation area (22) is communicated with the sludge area (14), and the sludge trapped by the separation area (22) can flow back into the sludge area (14);

the sludge area (14) is provided with the lifting device, and the lifting device lifts the mud-water mixture in the sludge area (14) to the water inlet area (11).

6. An anaerobic reactor according to claim 1, characterized in that the lifting means are arranged between the water outlet zone (12) and the water inlet zone (11);

the lifting device lifts the purified water in the water outlet area (12) to the water inlet area (11).

7. An anaerobic reactor according to any of claims 1-6, further comprising a gas source having biogas stored therein, wherein the lifting device comprises a gas stripping device, and wherein the gas source is in communication with and provides biogas to the gas stripping device;

the biogas in the gas source is from biogas generated in the pre-reaction zone (21), the main reaction zone (17), the water inlet zone (11), the water outlet zone (12), the separation zone (22) and the sludge zone (14) during reaction.

8. An anaerobic reactor according to claim 7, further comprising an aeration device (3), the aeration device (3) being in communication with the gas supply, the gas supply providing gas to the aeration device (3);

the aeration device (3) covers the bottom walls of the pre-reaction zone (21), the main reaction zone (17), the water inlet zone (11), the water outlet zone (12), the separation zone (22) and the sludge zone (14).

9. An anaerobic reactor according to claim 8, characterized in that a baffle plate (16) is arranged in the tank (1), the baffle plate (16) divides the tank (1) into a plurality of independent treatment zones;

each treatment area is internally provided with the compartment (2), and the sludge area (14), the main reaction area (17), the water inlet area (11) and the water outlet area (12) which are arranged corresponding to the compartment (2); all the treatment areas are communicated with the gas source, and the water inlet area (11), the water outlet area (12), the pre-reaction area (21), the main reaction area (17), the separation area (22) and the sludge area (14) in each treatment area are provided with the aeration devices (3); the air stripping devices are arranged between the sludge zone (14) and the water inlet zone (11) and between the water outlet zone (12) and the water inlet zone (11) in each treatment zone; the gas source is provided with a plurality of branches which are arranged corresponding to the processing areas, and the gas stripping device and the aeration device (3) in each processing area are communicated with the corresponding branches.

10. A reaction system comprising an anaerobic reactor according to any one of claims 1 to 9.

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