CN110002588A - Defecate collection sewage recycling processing unit and system - Google Patents

Abstract

The invention relates to a device and a system for recycling fecal waste water. The device comprises a casing, and the casing comprises an anaerobic digestion chamber, a buffer chamber and an aerobic reaction chamber which are separated by a partition and are sequentially arranged from bottom to top. The anaerobic digestion chamber is communicated with the aerobic reaction chamber through a communication pipe, and the two chambers are respectively provided with corresponding biological fillers. The anaerobic digestion chamber is provided with a sewage water inlet pipe and a biogas collection pipe, and the aerobic reaction chamber has a drainage that communicates with the buffer chamber. The buffer chamber is provided with a purified water outlet pipe. The invention integrates the anaerobic digestion chamber, the buffer chamber and the aerobic reaction chamber, and can effectively reduce the floor space of the treatment device while ensuring the treatment effect on the feces collection sewage. The biological fillers are installed in the anaerobic digestion chamber and the aerobic reaction chamber, which greatly increases the total biomass in the two treatment chambers, which is conducive to the treatment of high-concentration sewage; Improve the economics of the operation of the treatment plant.

Description

Wastewater recycling treatment device and system

technical field

The invention belongs to the technical field of sewage treatment, and in particular relates to a device and a system for recycling feces waste water.

Background technique

The toilets of normal-speed trains in my country are basically of the straight-discharge type, that is, the fecal sewage is directly discharged from the running train compartment to the outside of the car. In recent years, EMU trains have gradually become popular. Compared with traditional ordinary-speed trains, EMU train cars are equipped with facilities for collecting toilets, and the corresponding sewage is collected and discharged at the station.

Sewage collection has the characteristics of high organic matter concentration, high ammonia nitrogen and high SS, so it is difficult to treat. At present, the commonly used train collection sewage treatment technologies include: anaerobic baffled reactor (ABR) process, SBR process, anaerobic biological filter (AF) process, membrane bioreactor (MBR) process and aerated biological fluidization Some of the above processes have simple structure, small footprint but average treatment effect, and some have better treatment effect but complicated operation. For example, the invention patent with the application number of 201810150292.5 proposes a high-concentration wastewater treatment system and treatment method , the system includes a wastewater storage tank, a first-level lift pump, a first-level flocculation reaction tank, a first-level vertical flow sedimentation tank, a second-level lift pump, a micro-electrolysis reactor, a second-level flocculation reaction tank, a second-level vertical flow sedimentation tank, and a biological Aeration tank, and the treatment of feces collection sewage is divided into nine major processes, which require multiple people to control at the same time, which is not suitable for use in railway stations. In addition, most of the current collection sewage treatment technologies focus on the reduction of pollutants in wastewater, and today, with the increasing scarcity of energy, the recovery and utilization of residual energy in garbage and sewage is a major research hotspot. The invention patent with the application number of 201810122456.3 is one of the few patents that proposes the idea of recycling waste water from feces. Type anaerobic fermentation device, nitrogen and phosphorus recovery device, integrated anammox biological coupling device and composite electro-ozone catalytic device. Similarly, the composition of the system is relatively complex, and the environmental conditions are more demanding during application, which is not conducive to large-scale application in railway stations.

SUMMARY OF THE INVENTION

The embodiments of the present invention relate to a device and system for recycling feces collection sewage, which can at least solve some of the defects of the prior art.

The embodiment of the present invention relates to a feces collection sewage recycling treatment device, which includes a casing, wherein the casing includes an anaerobic digestion chamber, a buffer chamber and an aerobic reaction chamber which are separated by partitions and arranged in sequence from bottom to top, The anaerobic digestion chamber is communicated with the aerobic reaction chamber through a communication pipe, and corresponding biological fillers are respectively arranged in the two chambers. The anaerobic digestion chamber is provided with a sewage water inlet pipe and a biogas collection pipe. The chamber has a drainage channel communicated with the buffer chamber, and a purified water outlet pipe is arranged on the buffer chamber.

As an embodiment, a return pipe is provided on the buffer chamber, the return pipe is connected to an upstream sewage conditioning tank or a sewage pumping well, and a return control valve is provided on the return pipe.

As one of the embodiments, the inner chamber of the buffer is divided into an inflow chamber and an outflow chamber by a baffle, and there is a distance between the bottom end of the baffle and the bottom surface of the buffer chamber to communicate with the two flow chambers. The drainage channel is communicated with the inflow chamber, and the purified water outlet pipe is communicated with the outflow chamber.

As one embodiment, the horizontal cross-sectional area of the inflow chamber is smaller than the horizontal cross-sectional area of the outflow chamber.

As one embodiment, the return pipe is disposed close to the bottom plate of the buffer chamber, and the bottom plate of the buffer chamber has a slope that slopes toward the return pipe.

As one of the embodiments, the inner cavity of the anaerobic digestion chamber is separated by multiple baffle walls to form multiple digestion zones that are connected in sequence, and the flow directions of sewage in two adjacent digestion zones are up-flow and down-flow respectively, wherein, The sewage inlet pipe is communicated with the head end digestion area, and the communication pipe is communicated with the end digestion area.

As one of the embodiments, the bottom end of the baffle wall on the outlet side of the downflow digestion zone is provided with a deflector, and between the deflector and the bottom surface of the anaerobic digestion chamber, a deflector tapering along the water outlet direction is formed. flow channel.

As one of the embodiments, the aerobic reaction chamber is provided with a water distributor, and the water distributor includes a plurality of water distribution branch pipes, and each of the water distribution branch pipes is communicated with the outlet end of the communication pipe and has multiple water distribution branches. a water hole.

As one embodiment, the packing provided in the aerobic reaction chamber is a fixed packing and is located below the water distributor.

As one of the embodiments, a diversion control valve is provided on the communication pipe.

As one of the embodiments, an air convection channel is provided on the side wall of the aerobic reaction chamber.

As one of the embodiments, the buffer chamber is provided with a buffer chamber filler in which facultative bacteria grow.

As one embodiment, the casing is at least partially buried underground.

As one of the embodiments, the buffer chamber is provided with a decanter that can automatically adjust the decanting height according to the liquid level, and the purified water outlet pipe is connected to the decanter.

As one of the embodiments, the decanter includes a buoy and a telescopic hose, the buoy is provided with a water inlet hole, and the telescopic hose is respectively connected to the inner cavity of the buoy and the purified water outlet pipe.

Embodiments of the present invention also relate to a system for recycling feces collection sewage, including a biological treatment mechanism connected to the feces collection sewage inlet pipeline, and the biological treatment mechanism includes at least one set of the above-mentioned feces collection sewage recycling treatment device .

As one of the embodiments, the biological treatment mechanism includes multiple sets of waste collection sewage recycling treatment devices connected in series.

As one of the embodiments, the biological treatment mechanism includes multiple sets of feces collection sewage recycling treatment devices in parallel, and the feces collection sewage water inlet pipeline includes a feces collection sewage main pipe and a plurality of feces collection sewage branch pipes. The number of branch pipes and the sewage inlet pipes are the same and are connected in one-to-one correspondence.

The embodiments of the present invention have at least the following beneficial effects:

The feces collection sewage recycling treatment device provided by the invention integrates the anaerobic digestion chamber, the buffer chamber and the aerobic reaction chamber, which can effectively reduce the floor space of the treatment device while ensuring the treatment effect of the feces collection sewage. . The biological fillers are arranged in the anaerobic digestion chamber and the aerobic reaction chamber, which greatly increases the total biomass in the two treatment chambers, which is conducive to the treatment of high-concentration sewage; Improve the economics of the operation of the treatment plant.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a schematic structural diagram of a device for recycling feces and sewage according to an embodiment of the present invention;

2 is a schematic cross-sectional structure diagram of an anaerobic digestion chamber provided in an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a water distributor according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example 1

As shown in FIG. 1 , an embodiment of the present invention provides a feces collection sewage resource treatment device, including a casing 100 , and the casing 100 includes an anaerobic digestion chamber 101 , an anaerobic digestion chamber 101 , an anaerobic digestion chamber 101 , an anaerobic digestion chamber 101 , an anaerobic digestion chamber 101 , an The buffer chamber 103 and the aerobic reaction chamber 102, the anaerobic digestion chamber 101 and the aerobic reaction chamber 102 are communicated with the aerobic reaction chamber 102 through the communication pipe 107, and corresponding biological fillers are respectively arranged in the two chambers, and the anaerobic digestion chamber 101 is provided with There are sewage inlet pipes 105 and biogas collection pipes 106 , the aerobic reaction chamber 102 has a drainage channel communicating with the buffer chamber 103 , and the buffer chamber 103 is provided with a purified water outlet pipe 108 .

The above-mentioned housing 100 may have a cylindrical structure or a polygonal cylindrical structure or the like. The casing 100 can be made of stainless steel, or can be a reinforced concrete or glass fiber reinforced plastic casing 100 .

In the anaerobic digestion chamber 101, anaerobic digestion bacteria are added to promote the anaerobic digestion reaction of sewage to degrade most of the organic matter in the fecal sewage and generate biogas; the anaerobic digestion chamber 101 preferably contains Suspended filler 1013 is used as the carrier of anaerobic digestion bacteria, and polyethylene, polypropylene, polyurethane filler, etc. can be selected. On the premise of a larger specific surface area, the above-mentioned filler 1013 can also be made of other materials or made into other shapes.

In the aerobic reaction chamber 102, the organic matter in the sewage can be further degraded, and it is preferable to promote the nitrification reaction and denitrification reaction of the sewage to realize denitrification. Preferably, nitrifying bacteria and denitrifying bacteria are added, wherein the nitrification reaction It is completed by the nitrifying bacteria attached to the outer layer of the packing under aerobic conditions, and the denitrification is completed by the denitrifying bacteria in the packing under anoxic conditions.

The above-mentioned communication pipe 107 passes through the buffer chamber 103 from the anaerobic digestion chamber 101 and extends into the aerobic reaction chamber 102. It is a continuous pipe that runs through the upper and lower ends. The bottom end of the communication pipe 107 is preferably provided with a screen. It is used to prevent the filler 1013 in the anaerobic digestion chamber 101 from entering the communication pipe 107 .

Further preferably, the above-mentioned communication pipe 107 is provided with a diversion control valve 1071 , and the diversion control valve 1071 can control the communication between the anaerobic digestion chamber 101 and the aerobic reaction chamber 102 or not. In addition, in the application process, the rising flow rate of sewage in the communication pipe 107 can be adjusted within a certain range, so that most of the suspended matter sinks in the communication pipe 107 by gravity, so as to prevent the suspended matter from entering the aerobic reaction chamber 102 and ensure the sewage processing effect.

As shown in Figure 1, the biogas collection pipe 106 is preferably provided with a biogas collection control valve (shown in the figure, not marked), the biogas collection control valve can be an automatic valve or a manual valve, preferably a solenoid valve, which is convenient for remote control During the operation in the anaerobic digestion chamber 101, biogas will gradually be generated, and these biogas will be collected at the top of the anaerobic digestion chamber 101, and the gas volume in the biogas collection area at the top of the anaerobic digestion chamber 101 can reach a certain value (or anaerobic digestion chamber 101). When the liquid level in the digestion chamber 101 is lower than a certain value), the above-mentioned biogas collection control valve is opened.

Further, a device for preventing the backflow of biogas can be arranged on the biogas collection pipe 106, and the anti-return device can be a one-way valve, and the biogas can only be discharged from the anaerobic digestion chamber 101, and cannot be returned to the anaerobic digestion chamber. 101. In addition, a bypass pipe (shown in the figure, not marked) is further set on the above-mentioned biogas collection pipe 106, and a bypass control valve is set on the bypass pipe, and the bypass point of the bypass pipe is located at the inlet of the biogas collection control valve On the other hand, in the early stage of operation of the anaerobic digestion chamber 101, air will accumulate at the top of the anaerobic digestion chamber 101, which can be discharged through the bypass pipe.

The feces collection sewage enters the anaerobic digestion chamber 101 from the sewage inlet pipe 105 first for anaerobic digestion reaction. Since the anaerobic digestion chamber 101 is connected with the aerobic reaction chamber 102, the sewage can enter the aerobic reaction chamber 102 from the anaerobic digestion chamber 101. Since the aerobic reaction chamber 102 communicates with the buffer chamber 103, the sewage can enter the buffer chamber 103 from the aerobic reaction chamber 102, and in the buffer chamber 103, the sewage can be discharged after standing.

The feces collection sewage recycling treatment device provided in this embodiment integrates the anaerobic digestion chamber 101, the buffer chamber 103 and the aerobic reaction chamber 102, which can effectively reduce the size of the treatment device while ensuring the treatment effect of the feces collection sewage. of area. Biological fillers are arranged in the anaerobic digestion chamber 101 and the aerobic reaction chamber 102, which greatly increases the total biomass in the two treatment chambers, which is conducive to the treatment of high-concentration feces collection sewage; the biogas can be collected through the biogas collection pipe 106, and the feces collection sewage can be collected. Resource-based treatment improves the economic benefits of the operation of the treatment device.

The structure of the above-mentioned anaerobic digestion chamber 101 is further optimized, as shown in FIG. 1 and FIG. 2 , the inner cavity of the anaerobic digestion chamber 101 is separated by multiple baffle walls 1011 to form multiple digestion areas connected in sequence, adjacent to each other. The sewage flow directions of the two digestion areas are upflow and downflow respectively, wherein the sewage inlet pipe 105 is communicated with the head end digestion area, and the communication pipe 107 is communicated with the end digestion area. E.g:

The wall surface of the above-mentioned baffle wall 1011 is flat and parallel to the vertical direction. Each digestion area is arranged horizontally from left to right. The outlet end of the sewage inlet pipe 105 extends to the left end digestion area, and the bottom end of the communication pipe 107 is located in the right end digestion area. ; Then the water inlet of the digestion zone is located on its left baffled partition wall 1011, and its water outlet is located on its right side baffled partition wall 1011;

In another preferred embodiment, as shown in FIGS. 1 and 2 , the above-mentioned baffled partition walls 1011 are annular walls, and each baffled partition wall 1011 is sleeved in sequence (preferably coaxially sleeved), that is, each digestion zone is The annular area is set in sequence, the outlet end of the sewage water inlet pipe 105 is located in the outermost digestion area, and the bottom end of the communication pipe 107 is located in the innermost digestion area. The water inlet of the digestion zone is located on the outer ring baffle wall 1011, and the water outlet of the digestion zone is located on the inner ring baffle wall 1011.

Among two adjacent digestion zones, when one of the digestion zones is an up-flow digestion zone, the other is a down-flow digestion zone; obviously, for the up-flow digestion zone, its water inlet is located below its water outlet, and its inlet is below its water outlet. The water outlet is formed at the lower/bottom end of the corresponding side baffle partition wall 1011, and its water outlet is formed at the upper part of the corresponding side baffle partition wall 1011; for the downflow digestion zone, its water inlet is located above its water outlet, then its water inlet The water outlet is formed at the upper part/top end of the corresponding side baffle partition wall 1011 , and the water outlet is formed at the lower part/bottom end of the corresponding side baffle partition wall 1011 . Since the top of the anaerobic digestion chamber 101 needs to be used as a biogas channel, there needs to be a certain distance between the top of each baffle partition wall 1011 and the top surface of the anaerobic digestion chamber 101; The baffled partition wall 1011, which is directly arranged at the bottom of the anaerobic digestion chamber 101; for the baffled partition wall 1011 whose water passage is located at the bottom/lower part of the wall, it can be installed on the side wall of the anaerobic digestion chamber 101 through a bracket or installed on the adjacent baffle partition wall 1011. In this embodiment, as shown in FIGS. 1 and 2 , the anaerobic digestion chamber 101 is provided with two baffle walls 1011 , which divide the inner cavity of the anaerobic digestion chamber 101 into three digestion zones which are set in sequence.

In this embodiment, the anaerobic digestion chamber 101 is divided into a plurality of digestion zones by the baffle partition wall 1011, and a baffled anaerobic digestion zone is formed in which the upward flow and the downward flow of each digestion zone are alternately performed, on the one hand, it can prevent sewage A short flow is formed in the anaerobic digestion chamber 101, which effectively improves the anaerobic digestion effect; on the other hand, sewage can be used to impact the sludge at the bottom of the anaerobic digestion chamber 101 to improve the mixing effect of sewage and sludge, thereby improving the anaerobic digestion. Effect.

Further preferably, as shown in FIG. 1 and FIG. 2 , the bottom end of the baffle wall 1011 on the outlet side of the downflow digestion zone is provided with a deflector 1012 , and the gap between the deflector 1012 and the bottom surface of the anaerobic digestion chamber 101 is enclosed. Provide a diversion channel that tapers along the water outlet direction (that is, the water passing area gradually decreases). By setting the deflector 1012, a venturi-type structure can be formed, the impact effect of the sewage on the sludge at the bottom of the anaerobic digestion chamber 101 can be improved, and the uniform mixing of the mud and water can be facilitated.

In addition, as shown in FIG. 1 , a sludge discharge mechanism is provided at the bottom of the anaerobic digestion chamber 101 . The sludge discharge mechanism preferably adopts a perforated sludge discharge pipe 109 , which can discharge the sludge at the bottom of the anaerobic digestion chamber 101 regularly or irregularly. In another embodiment, the bottom of the anaerobic digestion chamber 101 has a certain slope, which is convenient for the collection of settled sludge in the anaerobic digestion chamber 101. Further, a mud collecting pit can be set at the bottom of the anaerobic digestion chamber 101, and the bottom of the anaerobic digestion chamber 101 The slope guides the sludge into the sludge collection pit, and a submersible sewage pump can be installed in the sludge collection pit to discharge the sludge regularly or irregularly. The discharged sludge can be further utilized as resources. For example, when the organic content in the sludge is high, microbial fuel cells can be made, and when the organic content in the sludge is low, it can be concentrated and dehydrated to make ecological fertilizers, etc.

Further optimizing the structure of the aerobic reaction chamber 102, it is understood that an aerobic environment needs to be provided in the aerobic reaction chamber 102, for example, an aeration pipe is arranged in the aerobic reaction chamber 102; in this embodiment, preferably 1, the side wall of the aerobic reaction chamber 102 is provided with an air convection channel that communicates with the outside world. The air convection channel can be in the form of louvers 1023, etc., wherein, the inverted louvers 1023 are preferred to prevent sewage splashed out of the housing 100 .

Further, as shown in FIG. 1 and FIG. 3 , the aerobic reaction chamber 102 is provided with a water distributor 1021, and the water distributor 1021 includes a plurality of water distribution branch pipes 10212, and each of the water distribution branch pipes 10212 is connected to the The outlet ends of the communication pipes 107 communicate with each other and are provided with a plurality of water distribution holes 10213 . Based on the above structure, the sewage enters the aerobic reaction zone from the communication pipe 107, the sewage drips from the water distribution holes 10213, the contact area between the sewage and the air is large, and the oxygen transfer efficiency is high; especially in combination with the above-mentioned use of natural air convection When the aerobic reaction chamber 102 is filled with oxygen, the effect of the aerobic reaction is better, and the energy consumption caused by mechanical aeration is avoided. The packing set in the aerobic reaction chamber 102 is preferably a fixed packing 1022 and is located below the water distributor 1021, and the sewage water droplets from the upper water distributor 1021 drop on the fixed packing 1022, and under the action of gravity It flows down slowly along the packing to ensure that the sewage can fully contact the packing of the aerobic reaction chamber 102 .

3 , the structure of the water distributor 1021 can be optimized as follows: the water distributor 1021 further includes a water distribution main pipe 10211, which is connected to the top of the communication pipe 107, and each water distribution branch pipe 10212 is respectively connected to the water distribution main pipe 10211. Tube 10211 on. Obviously, the symmetrical arrangement of the water distribution branch pipes 10212 on the water distribution main pipe 10211 can ensure the adequacy and uniformity of the aerobic reaction; FIG. 3 shows an example of an arrangement structure, and other water distributors 1021 with a symmetrical arrangement structure Not detailed here.

Further optimize the structure of the above buffer chamber 103:

For the connection between the buffer chamber 103 and the aerobic reaction chamber 102, the two can be communicated through pipes, and the pipes can be routed inside the casing 100 or outside the casing 100; in this embodiment, preferably, as shown in FIG. 1 , The above-mentioned drainage channel is formed by opening holes on the partition 104 between the buffer chamber 103 and the aerobic reaction chamber 102 , and the sewage in the aerobic reaction chamber 102 can be discharged into the buffer chamber 103 by its own weight without additional power. Further, the bottom plate of the aerobic reaction chamber 102 (that is, the partition plate 104 between the above-mentioned buffer chamber 103 and the aerobic reaction chamber 102 ) has a certain slope to slope toward the drainage channel, that is, the above-mentioned drainage channel is provided in the aerobic reaction chamber 102 In the case of the middle of the bottom plate, the drainage channel is located at the lowest position of the bottom plate of the aerobic reaction chamber 102, and the bottom plate of the aerobic reaction chamber 102 can be a structure such as a conical plate. Wherein, the above-mentioned drainage channel is preferably set in the center of the bottom plate of the aerobic reaction chamber 102; taking the casing 100 as the cylindrical casing 100 as an example, the above-mentioned drainage channel is preferably a circular hole, which is coaxial with the cylindrical casing 100, and further The above-mentioned communication pipe 107 passes through the drainage channel coaxially, that is, the communication pipe 107 is also coaxial with the cylindrical casing 100 .

In the above-mentioned buffer chamber 103, the sewage treated by anaerobic digestion and aerobic reaction can be left standing in this chamber to improve the cleanliness of the effluent. In another embodiment, the above-mentioned buffer chamber 103 is also used to consume the remaining oxygen in the sewage, and can achieve partial dephosphorization and denitrification functions. Specifically, the above-mentioned buffer chamber 103 is provided with a buffer chamber in which facultative bacteria grow The filler 1032 realizes the above functions through the action of facultative bacteria; the buffer chamber filler 1032 is preferably a suspension filler, and the filler structure can refer to the suspension filler structure in the anaerobic digestion chamber 101, which will not be repeated here. Therefore, this embodiment combines anaerobic digestion treatment, aerobic reaction treatment, and facultative biological treatment in the buffer chamber 103, which can efficiently treat fecal waste water and achieve the goal of resource utilization and low pollution discharge.

Further preferably, as shown in FIG. 1 , the buffer chamber 103 is provided with a decanter 1031 that can automatically adjust the decanting height according to the liquid level, and the purified water outlet pipe 108 is connected to the decanter 1031 . By arranging the decanter 1031, the buffer chamber 103 can be adapted to discharge water according to the liquid level, so as to ensure the treatment effect of sewage and the cleanliness of the discharged water. In this embodiment, a buoy-type decanter 1031 is used, specifically: as shown in FIG. 1 , the decanter 1031 includes a buoy (shown in the figure, not marked) and a telescopic hose (shown in the figure, not marked). There are water inlet holes, and the telescopic hose is respectively connected with the inner cavity of the buoy and the purifying water outlet pipe 108; the water inlet hole is preferably opened on the side wall of the buoy, the telescopic hose is connected to the bottom of the buoy, and the purified water enters the buoy through the water inlet hole, It is then discharged through the telescopic hose and the purified water outlet pipe 108 . Further, as shown in FIG. 1 , a buoy guide frame (shown in the figure, not marked) is provided on the bottom of the buffer chamber 103/partition 104 , and the buoy is slidably installed on the buoy guide frame, on the one hand, to avoid the buoy in the buffer chamber 103 . It floats freely inside, which affects the use effect of the telescopic hose. On the other hand, it guides the floating movement of the buoy to ensure the buoy floats smoothly and completes the decanting function well. In this embodiment, the above-mentioned buoy-type water decanter 1031 is used, no other power source is required, and the water discharge effect is ensured, and the energy saving effect is good, and the equipment investment is low.

In an optional preferred embodiment, as shown in FIG. 1 , the above-mentioned buffer chamber 103 is provided with a return pipe 110 , the return pipe 110 is connected to an upstream sewage conditioning tank or a sewage pumping well, and a return pipe 110 is provided on the return pipe 110 Control valve. By arranging the return pipe 110, the bottom sludge and at least part of the sewage in the buffer zone can be returned to the upstream process for recycling treatment, so as to strengthen the denitrification and phosphorus removal treatment effect of the feces sewage, and make full use of the carbon source, which is conducive to the collection of low-carbon sources. It can make full use of the carbon source of feces sewage and significantly improve the treatment effect of fecal sewage.

The sewage in the buffer chamber 103 does not need additional power when it is returned to the upstream process, and the return can be realized by relying on the gravity of the sewage; among them, the sewage conditioning tank or the sewage pumping well is the front-end structure of the device, and it is necessary to ensure that the water inlet of the device is a pressure flow.

When the sewage in the buffer chamber 103 returns to the upstream sewage conditioning tank or sewage pumping well, the return pipe 110 is preferably arranged on the side wall of the buffer chamber 103; the return control valve on the return pipe 110 can be a conventional control valve such as a solenoid valve. valve.

The return pipe 110 is preferably arranged close to the bottom plate of the buffer chamber (the partition plate 104 between the buffer chamber 103 and the anaerobic digestion chamber 101 ) to ensure that the bottom sludge in the buffer chamber 103 can be returned; further, the bottom plate of the buffer chamber has The slope towards the return pipe 110 facilitates the return of sewage and sludge by its own gravity.

Further preferably, the inner cavity of the buffer chamber 103 is separated into an inflow chamber and an outflow chamber by a baffle plate 1033, and there is a distance between the bottom end of the baffle plate 1033 and the bottom surface of the buffer chamber 103 to communicate the two flow chambers. , the drainage channel is communicated with the inflow chamber, and the purified water outlet pipe 108 is communicated with the outflow chamber. The baffle 1033 is preferably an annular baffle 1033, the inflow chamber is located in the ring of the annular baffle 1033, and the outflow chamber is located outside the ring of the annular baffle 1033; the above-mentioned open-hole drainage channel is located in the inflow chamber Directly above, the above-mentioned decanter 1031 is located in the outflow chamber. There is also preferably a distance between the top end of the baffle 1033 and the top surface of the buffer chamber 103, which can be fixed on the inner wall of the buffer chamber 103 through a bracket or the like. In the buffer chamber 103 , the sewage in the inflow chamber flows downward, and the sewage in the outflow chamber flows upward, which can improve the treatment effect of the facultative bacterial filler 1032 in the buffer chamber 103 .

Further preferably, the horizontal cross-sectional area of the inflow chamber is smaller than the horizontal cross-sectional area of the outflow chamber to ensure that the turbidity of the effluent is at a lower value.

To further optimize the structure of the above-mentioned feces collection sewage recycling device, as shown in FIG. 1 , the casing 100 is at least partially buried underground, and can be a fully buried structure or a semi-buried structure. Based on the above-mentioned buried structure, the casing 100 has a good buffering effect against external climate changes, which can ensure the stability of the reaction temperature in the casing 100 , especially in the cold season in northern China and other regions, can effectively ensure the casing 100 The stable and reliable operation of the anaerobic fermentation reaction of the inner and lower layers and the nitrification and denitrification reaction of the upper layer can reduce the heat preservation and energy consumption required for the treatment of sewage collection and effectively reduce the occupied space of the treatment device.

Further, a thermal insulation layer can be laid on the outer wall of the casing 100 to improve the thermal insulation effect of the casing 100 , and the thermal insulation layer can be selected from polyurethane foam plastic, polystyrene board, and the like.

The operation control method of the above-mentioned waste water recycling treatment device is roughly as follows:

(1) Device operation control process

The collected sewage is injected into the anaerobic digestion chamber 101 through the sewage inlet pipe 105 , the liquid level in the anaerobic digestion chamber 101 gradually rises, and the remaining air in the anaerobic digestion chamber 101 is discharged through the bypass pipe on the biogas collection pipe 106 . The suspended filler in the anaerobic digestion chamber 101 is freely suspended and drifted in the sewage under the impetus of the water flow. When the sewage reaches the design maximum liquid level, the bypass control valve on the biogas collection pipe 106 is closed, and the excess sewage enters through the communication pipe 107. The aerobic reaction chamber 102 drips from the water distribution hole 10213, flows down slowly in the fixed packing 1022 in the aerobic reaction chamber 102, and fully contacts with the air entering the aerobic reaction chamber 102 by natural convection.

The sewage falls from the bottom plate of the aerobic reaction chamber 102 into the buffer chamber 103, and the sewage flows slowly in the two flow chambers of the buffer chamber 103. During this process, the facultative bacteria consume the remaining oxygen in the sewage completely.

The device can be operated continuously or intermittently:

During continuous operation, after the collected sewage passes through the anaerobic digestion chamber 101, the aerobic reaction chamber 102 and the buffer chamber 103, the supernatant of the buffer chamber 103 can be discharged out of the shell 100 through the decanter 1031, and the sludge at the bottom of the buffer chamber 103 is discharged. And part of the sewage can be returned to the upstream sewage adjustment tank or sewage pumping well;

During intermittent operation, after the collected sewage passes through the anaerobic digestion chamber 101, the aerobic reaction chamber 102 and the buffer chamber 103 in sequence, the solenoid valve on the sewage inlet pipe 105 can be closed according to the water outlet requirements and actual operating conditions, and the buffer chamber can be closed. All the sewage in 103 is returned to the upstream sewage conditioning tank or sewage pumping well, that is, the collected sewage passes through the anaerobic digestion chamber 101 → aerobic reaction chamber 102 → buffer chamber 103 → anaerobic digestion chamber 101 → aerobic reaction chamber 102 → The buffer chamber 103 is discharged after one full cycle to enhance the effect of denitrification and dephosphorization.

(2) The liquid level control method in the anaerobic digestion chamber 101

The biogas in the anaerobic digestion chamber 101 is collected at the top of the chamber and can be collected by the biogas collection pipe 106. During the operation of the device, the valve on the biogas collection pipe 106 is kept in a normally closed state. When the volume of biogas in the anaerobic digestion chamber 101 increases to When a certain value (or the liquid level of the anaerobic digestion chamber 101 is lower than a certain value), the valve on the biogas collection pipe 106 is opened, and the biogas is collected. When the liquid level in the chamber 101 is higher than a certain value), the valve on the biogas collection pipe 106 is closed. The other end of the biogas collection pipe 106 is connected to a biogas collection device. The biogas collection device has a certain pressure and is slightly lower than the biogas pressure in the anaerobic digestion chamber 101. After the valve on the biogas collection pipe 106 is opened, the anaerobic digestion chamber 101 The internal biogas can automatically and slowly enter the biogas collection device.

Embodiment 2

The embodiment of the present invention also relates to a feces collection sewage resource treatment system, including a biological treatment mechanism connected to the feces collection sewage inlet pipe 105, and the biological treatment mechanism includes at least one set of the feces collection sewage provided in the first embodiment above. Recycling treatment device, the specific structure of the sewage recycling treatment device is omitted here.

In this embodiment, there are multiple sets of waste water recycling treatment devices, and multiple sets of waste waste recycling treatment devices can be operated in series or in parallel, and the design is based on the actual waste water situation:

(1) The biological treatment mechanism includes multiple sets of faecal sewage recycling treatment devices connected in series, that is, among the two adjacently connected faecal sewage recycling treatment devices, one of the faecal sewage recycling treatment devices purifies the waste water. The water pipe 108 is connected to the sewage water inlet pipe 105 of another set of waste collection sewage recycling treatment device.

The feces collection sewage is successively treated by multiple sets of feces collection sewage resource treatment devices, which can improve the removal rate of pollutants in the sewage, ensure the treatment effect of the feces collection sewage, and enable the treated water body to be discharged up to the standard. This structure is especially suitable for high concentrations. Treatment of fecal sewage and fecal sewage with high nitrogen and phosphorus content.

(2) The biological treatment mechanism includes multiple sets of waste collection sewage recycling treatment devices connected in parallel. The collection sewage water inlet pipe 105 includes the collection sewage main pipe and a plurality of collection sewage branch pipes, and the number of collection sewage branch pipes and sewage inlet pipes 105 The same and one-to-one correspondence connection. The use of multiple sets of waste water recycling treatment devices to operate in parallel to achieve sequential batch effluent can effectively improve the sewage treatment capacity and treatment efficiency of the waste collection waste water recycling system.

As a preferred embodiment, the above-mentioned feces collection sewage resource treatment system further includes a sewage pre-treatment mechanism, that is, a sewage pre-treatment mechanism is also provided on the road of the feces collection sewage inlet pipe 105, so that the feces collection sewage enters the collection after pre-treatment. The feces sewage resource treatment device is used for treatment, which can reduce the processing load of the feces sewage resource treatment device, and can effectively improve the treatment effect of the feces sewage.

In one embodiment, the sewage pretreatment mechanism includes a sewage conditioning tank, which can be an anaerobic conditioning tank, and a submersible sewage pump is arranged in the sewage conditioning tank, and each sewage inlet pipe 105 is connected to the submersible sewage pump. The sewage adjustment tank is used to adjust and treat the collected sewage to achieve the average value and volume of the sewage, and at the same time, it can play a buffering role, coordinate the pace between the sewage flow and the processing capacity of the biological treatment mechanism, and ensure the stable and reliable operation of the system. The above-mentioned sewage conditioning tank is preferably a rectangular parallelepiped structure. In order to control the temperature of the sewage, a hot water circulation pipe is arranged in the tank, and the hot water circulation pipe is connected with the boiler room; in order to prevent sludge settlement, two low-speed mixers are arranged in the sewage conditioning tank; There are three rectangular translucent glass fiber reinforced plastic cover plates at the top of the sewage conditioning tank, and two submersible sewage pumps at the bottom of the water outlet pipe.

Of course, the sewage pretreatment mechanism is not limited to the above-mentioned anaerobic adjustment tank, such as the use of grit chambers, flocculation tanks, etc., which will not be described in detail here.

The above-mentioned anaerobic regulating tank can be connected to a set of waste collection sewage recycling treatment device, or it can be connected to the biological treatment mechanism in series with the above-mentioned multiple sets of waste collection sewage recycling treatment devices, or it can be connected to the above-mentioned multiple sets of waste collection sewage recycling device. The connection of the parallel biological treatment mechanism of the resource treatment device is determined according to the actual production situation.

Obviously, the above-mentioned biological treatment mechanism can also perform subsequent sewage treatment steps, such as membrane treatment, Fenton oxidation treatment, and the like.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (18)

1. A feces collection sewage recycling treatment device, comprising a housing, characterized in that: the housing comprises an anaerobic digestion chamber, a buffer chamber and an aerobic reaction chamber which are separated by a baffle and arranged sequentially from bottom to top , the anaerobic digestion chamber is communicated with the aerobic reaction chamber through a communication pipe, and corresponding biological fillers are respectively arranged in the two chambers. The anaerobic digestion chamber is provided with a sewage water inlet pipe and a biogas collection pipe. The reaction chamber has a drainage channel communicated with the buffer chamber, and a purified water outlet pipe is arranged on the buffer chamber. 2 . The fecal collection sewage recycling treatment device according to claim 1 , wherein a return pipe is arranged on the buffer chamber, and the return pipe is connected to an upstream sewage regulation tank or a sewage pumping well, and the return pipe is connected to the return pipe. 3 . There is a return control valve on the pipe. 3 . The feces collection sewage recycling treatment device according to claim 2 , wherein the inner chamber of the buffer is separated into an inflow chamber and an outflow chamber by a baffle, and the bottom end of the baffle is connected to the outflow chamber. 4 . There is a gap between the bottom surfaces of the buffer chambers to communicate with the two flow chambers, the drainage channel is communicated with the inflow chamber, and the purified water outlet pipe is communicated with the outflow chamber. 4 . The feces collection sewage recycling treatment device according to claim 3 , wherein the horizontal cross-sectional area of the inflow chamber is smaller than the horizontal cross-sectional area of the outflow chamber. 5 . 5 . The feces collection sewage recycling treatment device according to claim 2 , wherein the return pipe is arranged close to the bottom plate of the buffer chamber, and the bottom plate of the buffer chamber has a slope that slopes toward the return pipe. 6 . 6 . The fecal collection sewage recycling treatment device according to claim 1 , wherein the inner cavity of the anaerobic digester is separated by multiple baffle walls to form a plurality of digestion zones that are connected in sequence, and two adjacent ones are formed. 7 . The sewage flow directions in the digestion zone are up-flow and down-flow respectively, wherein the sewage inlet pipe is communicated with the head end digestion zone, and the communication pipe is communicated with the end digestion zone. 7 . The fecal collection sewage recycling treatment device according to claim 6 , wherein the bottom end of the baffle wall on the outlet side of the downflow digestion zone is provided with a deflector, and the deflector is connected to the anaerobic A diversion channel that tapers along the water outlet direction is formed between the bottom surfaces of the digestion chamber. 8 . The waste water recycling treatment device according to claim 1 , wherein a water distribution device is provided in the aerobic reaction chamber, and the water distribution device comprises a plurality of water distribution branch pipes, and each of the water distribution The branch pipes are all communicated with the outlet end of the communication pipe and are provided with a plurality of water distribution holes. 9 . The feces collection sewage recycling treatment device according to claim 8 , wherein the packing set in the aerobic reaction chamber is a fixed packing and is located below the water distributor. 10 . 10 . The feces collection sewage recycling treatment device according to claim 8 , wherein a diversion control valve is arranged on the communication pipe. 11 . 11 . The feces collection sewage recycling treatment device according to claim 8 , wherein an air convection channel is arranged on the side wall of the aerobic reaction chamber. 12 . 12 . The fecal waste water recycling treatment device according to claim 1 , wherein the buffer chamber is provided with a buffer chamber filler in which facultative bacteria grow. 13 . 13. The feces collection sewage recycling treatment device according to any one of claims 1 to 11, wherein the casing is at least partially buried underground. 14. The fecal collection sewage recycling treatment device according to any one of claims 1 to 11, characterized in that: the buffer chamber is provided with a decanter that can automatically adjust the decanting height according to the liquid level, and the purifying The water outlet pipe is connected with the decanter. 15. The feces collection sewage resource treatment device according to claim 14, wherein the decanter comprises a buoy and a telescopic hose, the buoy is provided with a water inlet hole, and the telescopic hose is respectively connected with The inner cavity of the buoy is connected with the purified water outlet pipe. 16. A feces collection sewage resource treatment system, comprising a biological treatment mechanism connected to the feces collection sewage inlet pipeline, characterized in that: the biological treatment mechanism comprises at least one set of the system according to any one of claims 1 to 15. The above-mentioned waste water recycling treatment device. 17 . The feces collection sewage recycling treatment system according to claim 16 , wherein the biological treatment mechanism comprises multiple sets of feces collection sewage recycling treatment devices connected in series. 18 . 18. The feces collection sewage recycling treatment system according to claim 16, wherein the biological treatment mechanism comprises multiple sets of feces collection sewage recycling treatment devices connected in parallel, and the feces collection sewage water inlet pipeline comprises a collection of feces collection sewage A sewage main pipe and a plurality of feces collecting sewage branch pipes, the feces collecting sewage branch pipes and the sewage inlet pipes are connected in one-to-one correspondence with the same number.