CN211141630U - Inclined tube precipitation device and high ammonia nitrogen organic sewage treatment system - Google Patents

Abstract

The utility model discloses a pipe chute deposits processing system of device and high ammonia nitrogen organic sewage belongs to sewage treatment device and technical field. The device comprises a precipitation reaction tank, wherein a separation and precipitation auxiliary assembly is arranged in the precipitation reaction tank, and an independent water inlet channel and a sludge discharge channel are arranged at the lower part of the precipitation reaction tank; the water inlet channel is arranged on the side wall of the precipitation reaction tank and extends towards the interior of the precipitation reaction tank to form a water inlet diversion channel. Utilize the utility model provides an inclined tube deposits device and biological reaction and combines to handle high ammonia nitrogen organic sewage, can greatly improve the sludge concentration who improves bioreactor, increases the mode that unit pond holds the microorganism quantity to promote the biological efficiency of getting rid of and the throughput of current nitrogen and phosphorus removal technology.

Description

Inclined tube precipitation device and high ammonia nitrogen organic sewage treatment system

Technical Field

The invention belongs to the technical field of sewage treatment, and particularly relates to an inclined tube sedimentation device and a high ammonia nitrogen organic sewage treatment system.

Background

With the urbanization process and the accelerated development of industry in China, sewage pollution becomes one of the important factors restricting the national development. According to the classification of sources, the sources of sewage are wide, such as sewage discharged by industries of chemical industry, metallurgy, chemical fertilizer, coal gas, coking, tanning, monosodium glutamate, meat processing, breeding and the like, garbage percolate and the like; and the sewage generated in the industries has a common characteristic that the sewage is ammonia nitrogen sewage. On one hand, the sewage containing ammonia nitrogen has toxic action on organisms, on the other hand, when the sewage containing a small amount of ammonia nitrogen is reused in the industry, the sewage has corrosion action on certain metals, particularly copper, and can also promote the propagation of microorganisms in water pipelines and water using equipment, form biological scale and block the pipelines and the equipment. Therefore, the treatment of ammonia nitrogen sewage, especially high ammonia nitrogen sewage, is imminent. The high ammonia nitrogen organic sewage contains high aerobic pollutants and toxic pollutants, so that the characteristics of the high ammonia nitrogen organic sewage are intensively embodied in three aspects: high concentration, high ammonia nitrogen content and difficult degradation.

At present, a plurality of sewage treatment processes exist, such as a physical method, a chemical method, a biological method and a combination of two or three methods, wherein the physical method comprises grid filtration, a precipitation method, a flotation method, centrifugal separation, a membrane separation method and the like; chemical methods include coagulation, chemical precipitation, neutralization, extraction, redox, electrolysis, etc.; the biological method comprises aerobic and anaerobic methods. In recent years, national discharge standards for sewage treatment plants are becoming more strict, and sewage treatment processes are becoming more and more complex, and generally at least three levels of water treatment steps are included, wherein the first level of water treatment step is mostly a physical method, the second level of water treatment step is mostly a biological treatment and chemical method, and the third level of water treatment step is mostly a chemical treatment method. And sewage treatment devices used in different sewage treatment processes are different. Therefore, in the actual sewage treatment process, the design of the sewage treatment process and the sewage treatment device can also influence the water treatment effect.

The sedimentation tank is one of the commonly used technical means in the primary sewage treatment step, wherein, the inclined tube (plate) sedimentation tank has higher surface load (1.8-2.7 m3/m2.h) and higher solid flux (more than 300kg/m2. d), so that the sedimentation tank has higher treatment capacity and treatment efficiency, and can greatly save land occupation and operation cost. However, the conventional inclined tube (plate) sedimentation tank has the following two defects: firstly, the inclined plate or the inclined pipe is easy to cause local sludge blockage, and the inclined plate or the inclined pipe is easy to block and collapse; secondly, floating mud is easily generated in a common inclined tube (plate) sedimentation tank, and the floating mud easily passes through a packing layer in the inclined tube (plate) to be turned upwards, so that suspended solids SS of effluent is increased. One of the reasons for generating the floating mud is that when the inclined tube (plate) sedimentation tank enters water, the existing sedimentation tank mostly adopts wide-edge water inlet, so that the water inlet front end water inlet amount is large, the front end water inlet load is high, the water inlet impact force is large, the floating mud generation amount is increased, the floating mud can pass through a packing layer in the inclined tube (plate) along with a water body to turn upwards, and the floating mud content in the outlet water is high; the second reason for generating floating mud is that the inclined plate or the sludge storage area is arranged below the inclined tube, so that the sludge retention time is slightly too long, denitrification or anaerobic biological reaction is easily generated, gas is generated, and the bubbles lift the sludge at the bottom to pass through the packing layer in the inclined tube (plate) to be turned upwards, so that a large amount of floating mud is generated, and the effluent quality is influenced.

In order to solve the problem, the chinese utility model patent with publication number CN 209367894U discloses a gas return air washing inclined plate inclined tube type precipitation device, including the wallboard, be provided with swash plate or inclined tube shape in the wallboard and deposit the auxiliary structure, the below of depositing the auxiliary structure is provided with the air washing subassembly that is used for exporting the bubble, and the bubble through air washing subassembly output stirs rivers in order to get rid of the deposit on the sedimentation auxiliary structure. The air washing component is arranged below the inclined plate or inclined tube-shaped sedimentation auxiliary structure, when the inclined plate or inclined tube-shaped sedimentation auxiliary structure needs to be cleaned, a large amount of bubbles are output through the structure, the bubbles float upwards and quickly pass through the surface of the inclined plate of the inclined tube, simultaneously drives the water flow to rise to wash the surface of the inclined plate inclined pipe, so that the blocked sludge on the surface and in the holes can be washed down to move upwards along with the water flow, when the air supply is stopped, the stripped sediments are directly lifted to the top sludge reflux tank by the air stripping device at the bottom after being precipitated to the bottom of the tank under the action of gravity, thereby completing the cleaning and maintenance of the sedimentation auxiliary structure, effectively dredging inclined pipes of the inclined plates, avoiding the blockage of the inclined pipes (plates), the scheme can only solve the problems that the inclined tube inclined plate prevents blockage and prevents collapse and does not adopt mechanical backflow sludge, but cannot solve the technical problems that the inclined tube inclined plate is easy to float sludge and the water content of the sludge is further reduced.

Disclosure of Invention

1. Problems to be solved

Aiming at the problems that the separation and sedimentation auxiliary component of the existing inclined tube sedimentation device is easy to float mud and has more suspended matters in the discharged water, the invention provides the inclined tube sedimentation device which adopts a double-channel mode and is provided with a water inlet channel and a sludge discharge channel which are mutually independent, so that the problem of high content of suspended matters in the discharged water can be effectively avoided, and the quality of the discharged water is improved;

the invention also aims to provide a treatment system for high ammonia nitrogen organic sewage, wherein an inclined tube precipitation device is combined with biological reaction, so that the removal efficiency and treatment capacity of nitrogen and phosphorus pollutants in the conventional biological reaction nitrogen and phosphorus removal process can be improved.

2. Technical scheme

In order to solve the problems, the technical scheme adopted by the invention is as follows:

the invention provides an inclined tube sedimentation device, which comprises a sedimentation reaction tank, wherein a separation and sedimentation auxiliary assembly is arranged in the sedimentation reaction tank, a water inlet channel is arranged on the side wall of the sedimentation reaction tank at the lower part of the separation and sedimentation auxiliary assembly, and the water inlet channel is provided with an extension clapboard extending towards the interior of the sedimentation reaction tank; the bottom of the sedimentation reaction tank is provided with a sludge discharge channel, and the sludge discharge channel is positioned below the extension partition plate. The extension baffle of inlet channel extends along the inside longest side direction of sedimentation reaction tank, current sedimentation tank adopts the broadside to intake more relatively, then formed a relatively longer water inlet water conservancy diversion passageway, design like this, can enough increase the intake sectional area, the better energy of eliminating rivers, again have the water conservancy diversion effect to sewage, guarantee the mild of intake rivers, it is too fast because of the velocity of flow to reduce the intaking, and form the influence to pipe chute or swash plate precipitation mud-water separation, solved originally because deposit the front end, the load of intaking is too high, it is uneven to deposit terminal intake load that the load of intaking produced on the low side, cause the big problem of mud flotation production volume among the pipe chute sediment device.

Preferably, the inclined tube sedimentation device further comprises a water inlet rectifying pool arranged on one side of the sedimentation reaction pool, wherein a water inlet is formed in the upper part of the water inlet rectifying pool, and the lower part of the water inlet rectifying pool is communicated with the sedimentation reaction pool through a water inlet channel. On one hand, sewage firstly enters the water inlet rectifying tank, so that the energy of water flow is eliminated to a certain extent in the water inlet rectifying tank, the sewage enters the lower part of the inclined tube sedimentation device in a mode that the water flow is more gentle and uniform, the smoothness of the water inlet flow is further ensured by matching with the water inlet channel, and the adverse effect of water inlet on the inclined tube sedimentation device is reduced to the maximum extent; on the other hand, the design mode that the inlet rectifying pool adopts upper portion to intake, and the lower part is gone out water can make the sewage mixed liquid that contains muddy water gas that gets into in the inlet rectifying pool, and in the in-process of downstream, gas and mud-water separation (because the bubble is lighter, in the in-process that descends influenced by buoyancy and gradually with mud-water separation, release in the atmosphere, reach gas and mud-water separation's effect), prevent that the bubble from disturbing the work of pipe chute sediment device sedimentation effect, can guarantee to obtain better mud-water separation effect.

Preferably, the water inlet channel extends towards the bottom of the precipitation reaction tank and is arranged in an inclined mode (preferably, the inclined angle is 30-60 degrees). The length and the time of the sewage entering the water inlet channel at the bottom of the inclined tube sedimentation device can be further increased, and the sewage has a diversion effect.

Preferably, sediment reaction tank bottom is provided with the float mud and keeps off the piece, the float mud keeps off the piece and is equipped with the mud water conservancy diversion inclined plane of slope, and the passageway of intaking is terminal to the extension of mud water conservancy diversion inclined plane, leaves the gap between the two, forms mud discharge passage. On one hand, denitrification or anaerobic reaction can exist in the sludge separated by sedimentation during storage, bubbles generated in the process can support floating sludge to rise to form floating sludge, the sedimentation reaction tank is communicated with the sludge storage hopper only through a slit-shaped sludge discharge channel and is divided into two relatively independent spaces, and a floating sludge blocking piece can effectively prevent floating sludge from passing through a separation and sedimentation auxiliary assembly due to gas production caused by overlong storage residence time of the sludge, so that the problem that the water outlet effect is influenced by the floating sludge caused by gas production caused by overlong storage residence time of the separated and deposited sludge can be fundamentally solved.

Preferably, the inclined tube sedimentation device further comprises a sludge storage hopper arranged at the lower part of the sedimentation reaction tank, and the sedimentation reaction tank is communicated with the sludge storage hopper through a sludge discharge channel.

Preferably, the sludge storage hopper is a conical sludge storage hopper. Based on the gravity concentration principle, the lower the water content of the sludge positioned at the lower part of the sludge storage hopper, the lower the reflux ratio of the sludge to be refluxed is, and the lower the energy consumption is, the inclined tube precipitation device with double channels is utilized, and the water content of the precipitated sludge can be further reduced by combining the sludge storage hopper, and is reduced to below 97 percent from above 99 percent generally.

Preferably, the pipe chute deposits the device and still is provided with the air stripping device that is used for promoting mud, the air stripping device include both ends open-ended communicating pipe and set up in the bubble generator of communicating pipe bottom, the communicating pipe bottom stretches into in the mud storage fill and extends to mud storage fill bottom, communicating pipe top and the backwash tank intercommunication that is used for collecting. The water can get into the blank pipe from the bottom of communicating pipe, and the bubble of bubble generator output through setting up at its bottom through the liquid surface tension's principle, drives the sediment by the bubble and upwards exports along the blank pipe, collects the output with mud by the backwash trough of connection, further maintains or promotes biological reaction district operation mud concentration.

In a preferable scheme, the separation and precipitation auxiliary assembly is an inclined tube or an inclined plate assembly, and the inclined length of the inclined tube or the inclined plate assembly is 1000-3500 mm, preferably 1500-2500 mm. The treatment capacity and the treatment efficiency of the inclined tube sedimentation device can be further improved, and the sludge-water separation capacity of the sludge concentration sewage is improved.

The utility model provides a processing system of high ammonia nitrogen organic sewage, processing system of high ammonia nitrogen organic sewage includes biological reaction district and settling zone, be provided with foretell pipe chute sediment device in the settling zone. The inclined tube sedimentation device creates a necessary condition for further improving the operating sludge concentration of the biological reaction zone to 5-12 g/l, and under the condition of the same external sludge reflux ratio, even if the sludge concentration of the bioreactor is multiplied, a device cannot be blocked, on the contrary, the number of microorganisms in the unit tank can be increased due to the increase of the sludge concentration, and finally the biological removal efficiency and the treatment capacity of the existing nitrogen and phosphorus removal process are improved.

In a preferred scheme, the biological reaction zone comprises an aerobic reaction tank, a selective reaction tank, an anoxic reaction tank and an anaerobic reaction tank which are sequentially communicated, and meanwhile, the aerobic reaction tank is communicated with the anaerobic reaction tank, the anoxic reaction tank and the sedimentation zone; the aerobic reaction tank is communicated with the upper part of the water inlet rectifying tank in the sedimentation zone. The selective reaction tank can fully utilize the metabolism oxygen consumption function of the microorganisms to reduce the oxygen content in the water body entering the anoxic reaction tank and ensure that the subsequent anoxic reaction tank has a good anoxic environment.

3. Advantageous effects

Compared with the prior art, the invention has the beneficial effects that:

(1) the inclined tube sedimentation device provided by the invention is provided with the independent sewage inlet channel extending towards the interior of the sedimentation reaction tank, the length and the time of sewage entering the inlet channel at the bottom of the inclined tube sedimentation device can be increased, the sewage has a flow guiding effect, the rising flow rate of sludge-water mixed liquid entering the bottom of the inclined tube sedimentation device is reduced, the flow rate interference of the water entering on the inclined tube sedimentation device is weakened, the sludge-water separation efficiency is improved, the problems that the local water entering load is high easily caused by large local water inflow amount of the original inclined tube sedimentation device, the water entering impact force is large, the floating sludge generation amount is increased, the floating sludge can pass through a packing layer in a separation sedimentation auxiliary assembly along with a water body to turn upwards, the floating sludge content in the discharged water is high are solved, and the water quality.

(2) The inclined tube sedimentation device provided by the invention is provided with the water inlet rectifying pool, so that the energy of the water flow of the inlet water can be further eliminated, sewage enters the lower part of the inclined tube sedimentation device in a mode that the water flow is more gentle and uniform, the smoothness of the water flow of the inlet water is further ensured by matching with the water inlet channel, and the influence of the inlet water on the separation effect of the inclined tube sedimentation device is reduced to the maximum extent; and can make the sewage mixed liquid that contains muddy water gas that gets into in the rectifier tank of intaking, at the in-process of downstream, realize gas and mud-water separation (because of the bubble is lighter, in the in-process that descends receives buoyancy to influence gradually with mud-water separation, release in the atmosphere, reach gas and mud-water separation's effect), prevent that the bubble from disturbing the pipe chute sediment device and deposit the effect, reduce the possibility that the mud floats and follow the water and pass the packing layer in the separation and precipitation auxiliary assembly and turn over on the top, promote out water quality.

(3) Sludge separated by the inclined tube sedimentation device is temporarily stored in the sludge storage hopper, denitrification or anaerobic reaction can be caused in the sludge separated by sedimentation in the sludge storage hopper, bubbles generated in the process can support floating sludge to rise to form floating sludge, and under the action of a floating sludge blocking piece, the rising floating sludge cannot enter a separation sedimentation auxiliary assembly along with mixed liquid through a sludge discharge port and then enter supernatant liquid, so that the amount of the discharged floating sludge is increased;

the invention provides an inclined tube sedimentation device, wherein a floating mud blocking piece is arranged at the bottom of a sedimentation reaction tank, an extension clapboard of a water inlet channel extends towards a flow guide inclined plane of the floating mud blocking piece to form a slit-shaped sludge discharge channel, an outlet of the sludge discharge channel does not directly face a sludge storage hopper, the floating mud blocking piece has the functions of blocking the outlet of the sludge discharge channel and changing the direction of a floating mud movement path, so that floating mud generated by overlong storage time of the sludge is prevented from entering a separation sedimentation auxiliary assembly, the water outlet effect is prevented from being influenced by the floating mud, and the problem that the water outlet effect of the inclined tube sedimentation device is influenced by gas production of the separated and sedimentated sludge due to overlong retention time in the sludge storage hopper can be fundamentally solved.

(4) The inclined tube sedimentation device provided by the invention can be used together with a sludge storage hopper, has a good mud-water separation effect, can exert the sludge concentration effect of a sludge storage tank, and can reduce the water content of sludge in the sludge storage tank, thereby greatly reducing the energy consumption during sludge backflow and residual sludge discharge, and having popularization and application values.

(5) The invention provides a treatment system of high ammonia nitrogen organic sewage, which comprises a biological reaction zone and a precipitation zone, wherein the inclined tube precipitation device is arranged in the precipitation zone, so that the sludge concentration of the existing biological reaction zone can be further improved, the sludge concentration of the biological reaction zone is increased from 2-4 g/l to 5-12 g/l, the biological removal efficiency and the treatment capacity of the existing nitrogen and phosphorus removal process are further improved, the biologically enhanced nitrogen and phosphorus removal capacity is realized, and the wide application of the biological reaction zone in the field of sewage treatment is promoted;

the treatment method has the advantages that the treatment is carried out on the high organic matter concentration and high ammonia nitrogen sewage like garbage penetrating fluid, the number of microorganisms in a unit biological reaction area is multiplied, the effect of 'manpower is increased' can be fully exerted, the treatment load born by the microorganisms is greatly reduced, the toxic and restrained degree of the microorganisms is obviously reduced, the impact resistance of a biochemical system is obviously enhanced, the biological removal efficiency and the treatment capacity of the existing nitrogen and phosphorus removal process are improved, the effluent quality is more excellent, and the treatment method has good application and popularization values.

Drawings

FIG. 1 is a schematic view of the internal structure of the inclined tube settling device provided by the present invention;

FIG. 2 is a schematic view of a top view of a system for treating high ammonia nitrogen organic sewage according to the present invention;

FIG. 3 is a schematic diagram of a right-view structure of a high ammonia nitrogen organic sewage treatment system provided by the invention;

FIG. 4 is a schematic structural diagram of a conventional inclined tube settling device;

in the figure: 1. a precipitation reaction tank; 110. a water outlet groove is collected; 120. separating the precipitation assisting component; 130. a water inlet channel; 131. an upper extension spacer; 132. a lower extension baffle; 140. a mud float barrier; 141. a sludge discharge port; 142. a sludge diversion inclined plane; 2. a sludge storage hopper; 3. a water inlet rectifying pool; 310. a water inlet hole; 4. a communicating pipe; 410. an extension pipe; 5. an aerobic reaction tank; 510. a collection channel; 6. an anoxic reaction tank; 7. a main air supply pipe; 8. controlling a first valve; 9. a second control valve; 10. A wind supply branch pipe; 11. an aeration pipe; 12. an anaerobic reaction tank; 13. and selecting a reaction tank.

Detailed Description

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or the two elements can be directly connected together; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or the two elements may be directly integrated. In addition, the terms "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The invention is further described with reference to specific examples.

The invention provides an inclined tube sedimentation device as shown in figure 1, which comprises a sedimentation reaction tank 1 (shown as a part outlined by an oval broken line in the figure), a sludge storage hopper 2 positioned at the lower part of the sedimentation reaction tank 1, a water inlet rectifying tank 3 arranged at one side of the sedimentation reaction tank 1 and an air stripping device used for lifting sludge in the sludge storage hopper 2 in a backflow mode. The middle part of the sedimentation reaction tank 1 is provided with an inclined plate or inclined tube-shaped separation and sedimentation auxiliary component 120, the inclined length of the inclined plate or inclined tube is 1000-3500 mm, preferably 1500-2500 mm, the side wall of the lower part of the sedimentation reaction tank 1 (below the separation and sedimentation auxiliary component 120) is provided with an independent water inlet channel 130 and a sludge discharge channel 141, and the upper part of the sedimentation reaction tank 1 (above the separation and sedimentation auxiliary component 120) is provided with a collection water outlet groove 110 and a drain pipe communicated with the collection water outlet groove 110; the water inlet channel 130 is arranged on the side wall of the precipitation reaction tank and extends towards the interior of the precipitation reaction tank 1 to form a gap-shaped water inlet diversion channel; the lower part of the water inlet rectifying pool 3 is communicated with the precipitation reaction pool 1 through a water inlet channel 130, sewage is firstly injected into the water inlet rectifying pool 3 through a water inlet 310 at the upper part of the water inlet rectifying pool 3 and then enters the inclined tube precipitation device through the water inlet channel 130 communicated with the lower part of the water inlet rectifying pool 3; meanwhile, the sludge discharge passage 141 is located below the water inlet passage 130, and the precipitation reaction tank 1 is communicated with the sludge storage hopper 2 through the sludge discharge passage 141.

As shown in fig. 1, a floating mud blocking member is disposed at the bottom of the sedimentation reaction tank 11, the upper surface of the floating mud blocking member is an inclined sludge diversion inclined plane 140, the end of the water inlet channel 130 extends toward the diversion inclined plane 140, the end water outlet of the water inlet channel 130 is located above the sludge diversion inclined plane 140, the two are separated from each other to form a sludge discharge channel 141, the sludge falling onto the sludge diversion inclined plane 140 passes through the sludge discharge channel 141 and then continues to fall into the sludge storage hopper 2 under the diversion action of the sludge diversion inclined plane 140, it should be noted that, as shown in fig. 2, if looking upward from the bottom of the sedimentation reaction tank 1 at a bottom view, only the floating mud blocking member or the floating mud blocking member and a part of the extending partition plate forming the water inlet channel 130 can be seen, the sludge discharge channel 141 cannot be seen directly, and the floating mud would float upward through the sludge discharge channel 141 in a reverse, will be initially blocked by the bottom of the mud dam or both the bottom of the mud dam and the extended partition of the inlet channel 130.

As shown in fig. 2, the water inlet channel 130 is disposed on one side wall of the sedimentation reaction tank 1, and may be configured such that a long and narrow slit is formed in the side wall, the slit divides the side wall into an upper portion and a lower portion, a lower extension partition plate 132 extending toward a sludge guide inclined surface 140 of the sludge floating barrier is disposed on the side wall immediately below the entrance of the slit, and the lower extension partition plate 132 is inclined (the inclination angles are both 30 ° or 45 ° or 60 °); of course, the specific structure of the water inlet channel 130 may also be that a narrow slit is formed on the side wall, the slit cuts the side wall into an upper part and a lower part, an upper extending partition 131 and a lower extending partition 132 extending towards the sludge diversion inclined plane 140 of the sludge floating barrier are arranged on the upper side wall and the lower side wall adjacent to the entrance of the slit, and both the upper extending partition 131 and the lower extending partition 132 are inclined (both the inclined angles are 30 ° or 45 ° or 60 °).

The mud floating blocking piece is arranged on the side wall of the other side opposite to the side wall of the water inlet channel 130, the mud floating blocking piece and the lower extension partition plate 132 jointly act to divide the sedimentation reaction tank 1 and the sludge storage hopper 2 into two relatively independent spaces, and the mud floating blocking piece can be communicated with the sludge discharge channel 141 in a gap shape reserved between the two spaces.

The air lifting device comprises a communicating pipe 4 with two open ends, a bubble generator (the existing bubble generator is applicable) which can be communicated with an air supply device is arranged at the bottom of the communicating pipe 4, the bottom of the communicating pipe 4 extends into the sludge storage hopper 2 and extends to the bottom of the sludge storage hopper, a gap for sludge to pass through is reserved between the bottom of the sludge storage hopper 2 and the bottom of the sludge storage hopper, and the top of the communicating pipe 4 can be communicated with a return tank for collecting sludge.

The sludge storage hopper 2 can be an inverted trapezoidal sludge storage hopper with a large opening and a small bottom, or a conical sludge storage hopper, and the bottom of a communicating pipe 4 of the air lifting device extends to the bottom end/conical tip part with a small opening of the sludge storage hopper; at this time, the lower portion of the communicating pipe 4 is provided with an extension pipe 410 in a bent form, and the extension pipe 410 is parallel to the side slope of the sludge storage hopper 2 and extends to the bottom end/conical tip portion of the sludge storage hopper.

As shown in fig. 2 and 3, the treatment system for treating high ammonia nitrogen organic sewage provided by the invention comprises a biological reaction zone, a precipitation zone and an air supply device; the inclined tube sedimentation device is arranged in the sedimentation zone, the biological reaction is provided with an aerobic reaction tank 5, a selective reaction tank 13, an anoxic reaction tank 6 and an anaerobic reaction tank 12, meanwhile, the aerobic reaction tank 5 is also communicated with the anaerobic reaction tank 12 and the inclined tube sedimentation device in the sedimentation zone, one side of the aerobic reaction tank 5 is provided with a collection channel 510 communicated with the aerobic reaction tank 5, and the collection channel 510 is communicated with a water inlet hole 310 positioned at the upper part of the water inlet rectification tank 3; the anoxic reaction tank 6 and the anaerobic reaction tank 12 are both provided with sewage inlets for external sewage to enter the reactor; the air supply equipment comprises an air supply main pipe 7, the air supply main pipe 7 is communicated with a bubble generator of the air lifting device through a pipeline, a first control valve 8 is arranged on the pipeline, meanwhile, the air supply main pipe 7 is communicated with an aeration pipe 11 through an air supply branch pipe 10, and a second control valve 9 is arranged on the air supply branch pipe 10.

The working process and the principle of the reactor for treating the high ammonia nitrogen organic sewage provided by the invention are as follows: as shown in fig. 2 and 3, the external wastewater to be treated first enters the anoxic reaction tank 6 and the anaerobic reaction tank 12 through the wastewater inlet. One part of the water body (sludge-water mixed liquid) treated in the anoxic reaction tank 6 is lifted and then directly enters the aerobic reaction tank 5 for nitration reaction to remove carbon, the other part of the water body (sludge-water mixed liquid) treated in the anaerobic reaction tank 12 is lifted and then directly enters the aerobic reaction tank 5, one part of the water body (sludge-water mixed liquid) at the tail end of the treatment in the aerobic reaction tank 5 enters the collection channel 510, the water body entering the collection channel 510 is only provided with a water inlet hole 310, water enters from the upper part of the water inlet rectification tank 3 and falls to the lower part of the water inlet rectification tank 3 and enters an inclined tube sedimentation device arranged in a sedimentation zone through a water inlet channel communicated with the lower part of the water inlet rectification tank 3, and the water body entering the sedimentation reaction tank 1 realizes sludge-water separation of the water body (sludge-water mixed liquid) under the action of the separation and sedimentation auxiliary component 120, the clear water that separates sees through swash plate or pipe chute and gets into collection water outlet tank 110 and discharges whole high ammonia nitrogen organic sewage reactor through the drain pipe, and the mud that separates is then by the separation in swash plate or pipe chute below, falls on mud water conservancy diversion inclined plane 140 under the effect of gravity, falls into mud storage fill 2 via mud escape way 141 afterwards and stores the concentration.

Fall into and store the concentration in mud storage hopper 2, when needing the backward flow, air supply equipment work, open control valve 8, to the gas diffusion device air feed of air stripping device, the air stripping device just begins to promote the mud of storing in mud storage hopper 2, the communicating pipe 4 backward flow to aerobic reaction district that the mud that promotes through the air stripping device passes through, maintain the microorganism concentration in the biological reaction district, open control valve two 9, the aeration pipe 11 of aerobic reaction pond 5 begins to work, make the mud and the sewage intensive mixing of backward flow, satisfy microorganism growth metabolism oxygen suppliment demand. If sludge after the concentration in the sludge storage bucket 2 during the storage produces gas because of biological reactions such as denitrification or anaerobism, it floats mud to ask superficial mud come-up to form floats, float mud can be blockked and take place the collision by mud water conservancy diversion inclined plane 140 and lower extension baffle 132 at the in-process of come-up, under the disturbance of collision and rivers, make bubble and float mud attached to on the come-up mud separate, and can not directly get into the sedimentation reaction pond through mud escape way 141, can also avoid the mud that contains the bubble can directly get into the sedimentation reaction pond through inhalant canal 130.

The other part of the water body (muddy water mixed liquid) at the tail end of the treatment in the aerobic reaction tank 5 enters the selective reaction tank 13 and is temporarily stored in the selective reaction tank 13, microorganisms can metabolize and consume residual oxygen in the process, after the water body in the anoxic reaction tank 6 is lifted to enter the aerobic reaction tank 5, the water body liquid level in the area is reduced, at the moment, the water body in the selective reaction tank 13 enters the anoxic reaction tank 6 and continues to react along with other water bodies/newly entering water bodies, and the steps are repeated in such a way, so that the treatment of the high ammonia nitrogen wastewater is realized.

By utilizing the high-ammonia-nitrogen organic sewage treatment system provided by the invention (the inclination angles of the extension baffle plate 131 and the lower extension baffle plate 132 forming the water inlet channel 130 of the inclined tube sedimentation device are both 45 degrees), the improvement treatment is carried out on certain breeding sewage in Hebei, the sludge concentration controlled to operate in a biological reaction zone is 5-12 g/l during the operation period of the reactor, the system operates for two months, and each index of treated effluent is obviously superior to the livestock and poultry breeding pollutant discharge standard GB 18596-2001.

In addition, the invention provides a treatment system for high ammonia nitrogen organic sewage for comparison to treat certain aquaculture sewage in Hebei, and is characterized in that a sedimentation device is a traditional inclined tube sedimentation device, as shown in figure 4, the concentration of sludge running in a biological reaction zone during running can be always maintained at 2-4 g/l for avoiding a large amount of sludge floating, and the field running proves that the sludge floating phenomenon is more serious when the sludge concentration running in a traditional inclined tube sedimentation tank is higher. Specific water inlet and outlet conditions are shown in table 1:

TABLE 1 Water quality index before and after treatment of certain cultivation sewage in Hebei

The results prove that the inclined tube precipitation device provided by the invention can increase the sludge concentration in a high ammonia nitrogen organic sewage treatment system to about 10g/l, and the actual inlet water quality and the actual inlet water amount can still stably reach the designed values, even part of indexes are better than the designed values in comparison with the process outlet effect of the traditional inclined tube precipitation device.

The above description is only for the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept within the scope of the present invention, which is disclosed by the present invention, and the equivalent or change thereof belongs to the protection scope of the present invention.

Claims (10)

1. The utility model provides a pipe chute deposits device, includes precipitation reaction pond (1), be provided with separation and deposit auxiliary assembly (120) in precipitation reaction pond (1), its characterized in that: a water inlet channel (130) is arranged on the side wall of the precipitation reaction tank (1) at the lower part of the separation and precipitation auxiliary assembly (120), and the water inlet channel (130) is provided with an extension clapboard extending towards the interior of the precipitation reaction tank (1); the bottom of the sedimentation reaction tank (1) is provided with a sludge discharge channel (141), and the sludge discharge channel (141) is positioned below the extension partition plate.

2. The tube chute deposition apparatus of claim 1, wherein: still include water inlet rectification pond (3), the upper portion of water inlet rectification pond (3) is provided with water inlet (310), and the lower part of water inlet rectification pond (3) is linked together through inhalant canal (130) and sedimentation reaction pond (1).

3. The tube-chute sediment apparatus of claim 2, wherein: the water inlet channel (130) is obliquely arranged and extends towards the bottom of the precipitation reaction tank (1).

4. The tube settler according to any one of claims 1 to 3, wherein: sedimentation reaction tank (1) bottom is provided with the float mud and blocks the piece, the float mud blocks mud water conservancy diversion inclined plane (140) that is equipped with the slope, and inhalant canal (130) end is extended to mud water conservancy diversion inclined plane (140), leaves the gap between the two, forms mud escape way (141).

5. The tube chute deposition apparatus of claim 4, wherein: the device is characterized by further comprising a sludge storage hopper (2) arranged at the lower part of the precipitation reaction tank (1), wherein the precipitation reaction tank (1) is communicated with the sludge storage hopper (2) through a sludge discharge channel (141).

6. The tube chute deposition apparatus of claim 5, wherein: the sludge storage hopper (2) is a conical sludge storage hopper.

7. The tube chute deposition apparatus of claim 6, wherein: the sludge treatment device is characterized in that an air lifting device used for lifting sludge is further arranged, the air lifting device comprises a communicating pipe (4) with two open ends and a bubble generator arranged at the bottom of the communicating pipe (4), and the bottom of the communicating pipe (4) stretches into the sludge storage hopper (2) and extends to the bottom of the sludge storage hopper (2).

8. The tube chute deposition apparatus of claim 7, wherein: the separation and precipitation auxiliary assembly (120) is an inclined tube or an inclined plate assembly, and the inclined length of the inclined tube or the inclined plate assembly is 1000-3500 mm.

9. The utility model provides a processing system of high ammonia nitrogen organic sewage, includes biological reaction district and settling zone, its characterized in that: the sedimentation zone is provided with an inclined tube sedimentation device according to any one of claims 5 to 8.

10. The system for treating high ammonia nitrogen organic sewage according to claim 9, characterized in that: the biological reaction zone comprises an aerobic reaction tank (5), a selective reaction tank (13), an anoxic reaction tank (6) and an anaerobic reaction tank (12) which are communicated in sequence, and meanwhile, the aerobic reaction tank (5) is communicated with the anaerobic reaction tank (12), the anoxic reaction tank (6) and the sedimentation zone; the aerobic reaction tank (5) is communicated with the upper part of the water inlet rectifying tank (3) of the inclined tube sedimentation device.

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