CN103274548A - Cycle closed type filler-free high-efficiency ammonia nitrogen removing and nutrient recovery device of biogas slurry - Google Patents
Cycle closed type filler-free high-efficiency ammonia nitrogen removing and nutrient recovery device of biogas slurry Download PDFInfo
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- CN103274548A CN103274548A CN2013102248011A CN201310224801A CN103274548A CN 103274548 A CN103274548 A CN 103274548A CN 2013102248011 A CN2013102248011 A CN 2013102248011A CN 201310224801 A CN201310224801 A CN 201310224801A CN 103274548 A CN103274548 A CN 103274548A
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Abstract
The invention discloses a cycle closed type filler-free high-efficiency ammonia nitrogen removing and nutrient recovery device of biogas slurry. The device provided by the invention is characterized in that the device comprises an air stripping tower and an absorption device; the air stripping tower is composed of a tower top, a tower body and a tower bottom; the tower top is provided with an extraction opening; the upper portion of the tower body is provided with a demister and a baffle plate; the upper portion of the tower body is equipped with a liquid inlet tube, an alkaline agent feed inlet and a gas distribution device; the lower portion of the tower body is provided with a biogas slurry circulation port and a drain outlet; the tower bottom is provided with an air inlet, an alkaline agent catch basin; an aeration self-stirring device is connected with an air inlet pipe through a bearing and a sealing member; the aeration self-stirring device rotates under the backward thrust of air impact on water; the air stripping tower is connected with a circulating pump, an automatic alkaline agent feeding device, an ozone generator, a sample tap and an exhaust port; the absorption device is composed of an alkali absorption pot and primary and secondary acid absorption pots; and parts are connected with each other through pipelines. The device provided by the invention has advantages of simple structure and treatment process, low cost, stable performance, good purifying effect, simple operation and management and the like, is easy to maintain, and is suitable for postprocessing of various raw material biogas slurries.
Description
Technical field
The present invention relates to biogas engineering natural pond liquid aftertreatment ammonia nitrogen removal and nutrient retrieving arrangement, more particularly, the present invention relates to a kind of circulation enclosed does not have the efficient natural pond of filler liquefied ammonia nitrogen and removes the nutrient retrieving arrangement.The invention belongs to sewage disposal, environmental protection technical field.
Background technology
Utilize producing methane through anaerobic fermentation technical finesse livestock and poultry cultivation waste, crop material, domestic refuse and other organic waste, both can curb environmental pollution, can realize the recycling of waste again, obtain the energy, environmental protection and economic benefit preferably, in engineering, be used widely.Resultant product behind the anaerobically fermenting---anaerobic digestion solution is also referred to as natural pond liquid, contains the multiple materials such as organism, ammonia nitrogen, soluble phosphate and colibacillus of excrement that do not digested.In big-and-middle-sized biogas engineering, natural pond liquid generation is big, near soil, the farmland difficulty of all dissolving when as fertilizer sources utilizes, the remote big cost height of conveying energy consumption, often be discharged on the spot in the environment, cause the serious environmental pollution problem, for example, body eutrophication, continue and emission greenhouse gas etc. disorderly.Natural pond liquid can not qualified discharge have become the development bottleneck of biogas engineering, therefore, presses for a kind of effective natural pond liquid post-processing technology technology and equipment.
At present, in the big-and-middle-sized biogas engineering of China, natural pond liquid aftertreatment is used for reference in a large number or is directly applied mechanically urban sewage treatment process and technology, as the sewage aerobic biological treatment.Handle the method for high-concentration ammonia nitrogenous wastewater except stripping air lift method, other method generally exists complex process, the higher defective of working cost.Domestic stripping device generally adopts packing tower or column plate tower, but because the flocculation sedimentation tends to very fast generation one deck incrustation on filler and the column plate, forms pressure reduction, influences equipment work efficient and stripping effect.In addition, contain a large amount of colibacillus of excrement in the liquid of natural pond, most probable number MPN is 35000/100mL, does not have substantially during discharging through killing processing.
Also do not address the above problem well in the present actual biogas engineering.Therefore, develop efficient natural pond liquid aftertreatment technology technology and equipment and become the key that solves natural pond liquid minimizing and qualified discharge.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide a kind of circulation enclosed does not have the efficient natural pond of filler liquefied ammonia nitrogen and removes the nutrient retrieving arrangement, kill problem to solve natural pond liquid middle and high concentration ammonia nitrogen removal, nutrient recovery and intestinal bacteria, make water outlet satisfy subsequent biological treatment operation and environmental requirement.
For achieving the above object, the present invention takes following technical scheme:
A kind of circulation enclosed does not have the efficient natural pond of filler liquefied ammonia nitrogen and removes the nutrient retrieving arrangement, and it is characterized in that: it comprises stripping tower and absorption unit; The inlet mouth of the alkali tourie of stripping tower top bleeding point and absorption unit is communicated with by valve and pipeline; The secondary acid tourie air outlet of stripping tower bottom inflow pipe and absorption unit is communicated with by air intake pump and pipeline; Ozonizer and stripping tower bottom inflow pipe are communicated with by valve and pipeline.
Described stripping tower by cat head, tower body and tower at the bottom of three parts form, described cat head top arranges bleeding point, cat head bottom arranges ring flange; Described tower body two ends arrange ring flange, and the middle and upper part arranges liquid-inlet pipe, and the middle and lower part arranges leakage fluid dram; Top arranges ring flange at the bottom of the described tower, and the bottom arranges inlet pipe, and the bottom arranges slag-drip opening and tower bracing frame.
Described absorption unit is made up of alkali tourie, primary acids tourie and secondary acid tourie; Alkali tourie, primary acids tourie and secondary acid tourie are provided with inlet mouth, air outlet, liquid adding hole and leakage fluid dram; Alkali tourie inlet mouth and stripping tower top bleeding point are communicated with by valve and pipeline, alkali tourie air outlet and primary acids tourie inlet mouth are communicated with by valve and pipeline, primary acids tourie air outlet and secondary acid tourie inlet mouth are communicated with by valve and pipeline, and secondary acid tourie air outlet and air intake pump inlet mouth are communicated with by valve and pipeline.
Described alkali tourie, primary acids tourie and secondary acid tourie bottom are provided with leakage fluid dram, together with the fluid inlet above the tank body, realize giving liquid feeding and discharge opeing in the jar.
Described liquid-inlet pipe is set to square, and its horizontal ends is stretched out outside the tower body, Open Side Down for vertical end.
Be provided with gasket between the ring flange at the bottom of described cat head, tower body and the tower, and link together with bolt, guarantee that stripping tower has good air-tightness.
The present invention can also do following improvement:
Described tower body top arranges mist eliminator, and described mist eliminator is fixed on the described tower body inwall back-up block, is connected with the tower body inwall around the mist eliminator, guarantees that air-flow passes through from mist eliminator inside.
Described mist eliminator arranges wadding fibrous filler or sponge, protruded packing or their mixture, helps water vapor absorption in the gas.
Described mist eliminator below is provided with airflow baffle, described airflow baffle is set to two-layer left and right sides staggered arrangement up and down, the traverse baffle curved edge is connected with described tower body inwall, breach and described tower body inwall form gas channel, described airflow baffle effect is the foam that produces in the interception tower, prevents that foam from entering bleeding point.
Described upper strata traverse baffle is set to tilt 0 °～0.5 ° to the lower right, and described lower floor traverse baffle is set to left down oblique 1 °～3 ° of square neck, is convenient to a liquid guide flow that drops on upper surface in described tower body.
Described airflow baffle below is provided with the alkaline agent opening for feed, and described alkaline agent opening for feed advances the alkaline agent device by valve automatically with pipeline and outside and is connected.
Described liquid-inlet pipe outlet below is provided with the natural pond liquid atomization device, and described natural pond liquid atomization device is fixed on the distribution device, and the liquid atomization device effect of described natural pond is that natural pond liquid is atomized.
Described distribution device below is provided with natural pond liquid refluxing opening, described natural pond liquid refluxing opening and described leakage fluid dram are in the same plane, to liquid-inlet pipe, be convenient to provides continual liquid to described natural pond liquid atomization device to described natural pond liquid refluxing opening by natural pond liquid reflux pump, valve and pipe connection.
Described distribution device is arranged between leakage fluid dram and the liquid-inlet pipe outlet, and is fixed on the back-up block of described tower body inwall, and the curved edge of described distribution device is connected with the tower body inwall, and its flat mouthful of end connects a hydrops flow deflector of arranging vertically downward.
Be evenly equipped with the vertical tubule of 5～10mm protruding upward on the described distribution device plane, stop up the cloth gas port to prevent alkaline agent, be conducive to alkaline agent simultaneously and on this plane, further dissolve.
Outermost tubule on the described distribution device plane is made as the horn shape that leans outward, and is conducive to airflow scouring tower body wall, keeps wall clean.
Described hydrops flow deflector is connected with described tower body inner-wall surface and forms the drain passage, with the hydrops water conservancy diversion on the distribution device at the bottom of the described tower.
Described inlet pipe exit end is provided with aeration from whipping appts, helps to improve the stripping effect.
Described aeration comprises the hollow vertical tube of the hollow transverse tube of a cruciform and the other end sealing from whipping appts, the inner intercommunication of the hollow transverse tube of described cruciform and hollow vertical tube, the hollow transverse tube of described cruciform is connected by bearing seal with the inlet pipe exit end, to guarantee that aeration freely rotates from whipping appts.
The hollow transverse tube of described cruciform is evenly equipped with the aperture of giving vent to anger in bottom surface and described hollow vertical tube side, to guarantee good aeration effect.
The aperture aperture of giving vent to anger on the described hollow vertical tube is along the tube axis direction setting, and the aperture aperture direction of giving vent to anger on each vertical tube promotes whipping appts during with the ejection of assurance air-flow and rotates towards unanimity.
Described inlet pipe below arranges the alkaline agent tray, described natural pond liquid tray curved edge is connected with inner-wall surface at the bottom of the described tower, described natural pond liquid tray is provided with opening end, described opening end is set to the high facade of 10～15mm, inner-wall surface forms overflow port at the bottom of described facade and the tower, and its effect is to guarantee that the alkaline agent dissolving is thorough, throw out flows into the tower bottom outlet.
Described leakage fluid dram below is installed and is had the pH meter that temperature shows, is convenient to temperature and potential of hydrogen in the monitoring tower.
Described leakage fluid dram arranged outside sampling branch is convenient to sampling analysis and understands running condition in the tower.
Be provided with ozone air inlet branch between the outer entrance of described inlet pipe tower body and the described aerator pump air outlet, to ozonizer, its effect is the colibacillus of excrement of killing in the liquid of natural pond by valve and pipe connection in described ozone air inlet branch.
By inside and outside two-layer formation, the centre is provided with thermal insulation layer at the bottom of described cat head, tower body and the tower, is used for insulation, guarantees that natural pond liquid heat can sharply not scatter and disappear in the stripping process.
Between all feed inlet and outlets of described stripping tower, all air inlet/outlets of tourie and leakage fluid dram, thief hole, ozone inlet mouth and the air intake pump air outlet valve is set, is used for the control of each several part input and output material and is convenient to the adjusting process operation.
The present invention the invention has the beneficial effects as follows owing to take above technical scheme:
1, by closed circulation gas stripping, can avoid repeating in the stripping to suck CO in the air
2, be conducive to reduce CO
2Be dissolved in back and the alkaline agent reaction of adding in the water, thereby reduce the alkaline agent input cost, circulation blow-removing will dissolve CO in the liquid of natural pond simultaneously
2Remove totally, be conducive to improve natural pond liquid pH value, shorten follow-up ammonia-nitrogen desorption time and energy consumption.2, by dropping into alkaline agent, improve natural pond liquid pH value, can effectively promote the NH in the liquid of natural pond
4 +Ion and alkaline agent OH
-The ion chemistry effect generates free state NH
3Mass transfer process, and head space has accelerated free state NH in the tower under the low pressure and aeration stripping effect that forms of bleeding
3Conversion rate from from liquid phase state to gas phase state promotes free ammonia to overflow from water.3, under physics, chemistry and mechanical effect, the throwing out that alkaline agent rose adsorbs the phosphorus in the liquid of natural pond effectively, can reclaim as slow-release phosphate fertilizer or purifies as ground phosphate rock, increases added value.4, can kill colibacillus of excrement in the liquid of natural pond effectively by injecting ozone, avoid adding measures such as medicine and high-temperature sterilization, can not cause drug residue, and be conducive to ammonia nitrogen and COD removes.5, the tower wall is implemented insulation, can effectively utilize the heat of fermentor tank natural pond liquid water outlet, reduces and keeps the fuel cost that the stripping temperature drops into.6, aeration rotates under air-flow promotes from whipping appts and plays stirring action, has increased gas-to-liquid contact chance and ammonia nitrogen removal effect, saves fund input and conservation of power cost that electric mixer is set.7, process distribution device, natural pond liquid tray and aeration are conducive to the dissolving fully of powder alkaline agent from the acting in conjunction of whipping appts, and the convenient powder alkaline agent that uses lower cost reaches and reduces the running cost purpose.8, the combination of atomisation unit and distribution device has increased the contact area of gas-liquid, increases degassing efficiency.9, the inclination pore that the outside is arranged on the distribution device can take full advantage of the clean chamber of the souring wall of its high velocity air.10, no filler in the device stripping chamber can not produce the pressure reduction of packing tower and column plate tower and influences degassing efficiency.11, the NH that from the liquid of natural pond, parses
3By producing chemical action with absorption agent, generate high-efficiency nitrogen fertilizer, increase natural pond liquid and utilize added value.12, residual solution pH value effectively improved after stripping was handled, and can directly utilize this liquid that biogas is purified or pretreated straw, reduced marsh gas purifying cost and raw materials pretreatment cost, for follow-up recycling is laid good basis.13, apparatus of the present invention have simple in structure, cost of investment is low, stripping is stable and reliable for performance, good purification, operational management and safeguard advantages such as easy, is applicable to that all kinds of raw materials natural pond liquid qualified discharge handles.
Description of drawings:
Fig. 1 is apparatus of the present invention structural representations;
Fig. 2 is distribution device synoptic diagram of the present invention;
Fig. 3 is that aeration of the present invention is from the whipping appts structural representation;
Embodiment:
Be described in detail below in conjunction with drawings and Examples 1 and 2 pairs of apparatus of the present invention of embodiment.
Embodiment 1:
As shown in Figure 1, the inventive system comprises stripping tower 1, absorption unit 2; The air outlet 2F of the secondary acid tourie 23 in stripping tower 1 bottom inflow pipe 7 and the absorption unit 2 is communicated with by aerator pump 5; The inlet mouth 2A of the alkali tourie 21 in stripping tower 1 top bleeding point 14 and the absorption unit 2 is communicated with by valve and pipeline; Automatically advancing on alkaline agent device 4 and the stripping tower 1 alkaline agent opening for feed 41 is communicated with by valve and pipeline; Ozonizer 6 and stripping tower 1 bottom inflow pipe 7 are communicated with by valve and pipeline.
Shown in Fig. 1～3, stripping tower 1 of the present invention comprises at the bottom of cat head 11, tower body 12, the tower 13; Be provided with gasket between the adjacent ring flange at the bottom of cat head, tower body and the tower, and link together with bolt, guarantee that stripping tower has good stopping property; Cat head 11 tops arrange bleeding point 14, are used for head space gas in the tower is extracted out; Mist eliminator 18 is fixed on the tower body 11 upper inside wall back-up blocks 16, is connected with inwall all around, and mist eliminator 18 absorbs the steam in the air-flow and tackles the foam that rises with air-flow; Airflow baffle 17 is positioned at mist eliminator 18 belows, is set to two-layer left and right sides staggered arrangement up and down, and the effect of airflow baffle 17 is interception and broken foam and the droplet that rises with air-flow; Alkaline agent opening for feed 41 downward-sloping airflow baffle 17 lower rights that are arranged in; Liquid-inlet pipe 3 is positioned at airflow baffle 17 lower lefts; Natural pond liquid atomization device 10 faces liquid-inlet pipe 3 outlets between liquid-inlet pipe 3 and distribution device 9, natural pond liquid atomization device 10 is fixed on distribution device 9 central positions, by natural pond liquid atomization device 10 natural pond liquid is atomized; Distribution device 9 is fixed on by back-up block 16 on the inwall of tower body 12, and distribution device 9 surfaces evenly arrange a lot of apertures, and the air-flow by aperture is conducive to fragmentation and is trapped in the lip-deep foam of distribution device; The hydrops flow deflector 93 of Bu Zhiing is connected the flat mouthful of end in distribution device 9 left sides vertically downward, and hydrops flow deflector 93 is connected with tower body 12 inner-wall surfaces and forms the drain passage; Aeration communicates from whipping appts 8 and inlet pipe 7, and aeration is connected by the bearing sealing with inlet pipe 7 exit end from whipping appts 8; Inlet pipe 7 belows are provided with natural pond liquid tray 19, accept the natural pond liquid that is flowed down by distribution device 9; The bottom arranges slag-drip opening 15 at the bottom of the tower, is convenient to throw out in the tower is discharged; In tower body 12 middle and lower parts leakage fluid dram 24 is set, is convenient to supernatant liquor in the tower is discharged; In tower body 12 middle and lower parts the pH meter 26 with temperature display function is installed, is convenient to temperature and potential of hydrogen in the monitoring tower.
Above-mentioned mist eliminator 18 arranges wadding fibrous filler or sponge, protruded packing or their mixture, helps to absorb steam and interception foam in the gas.
The upper strata traverse baffle of above-mentioned airflow baffle 17 is set to tilt 0 °～0.5 ° to the lower right, lower floor's traverse baffle tilts 1 °～3 ° to being set to the lower left, airflow baffle arc limit is connected with tower body 12 inwalls, its breach and tower body 12 inwalls form gas channel, and the airflow baffle effect is the foam that produces in the interception tower.
Above-mentioned liquid-inlet pipe 3 is set to square, and its horizontal ends is stretched out outside the tower body, Open Side Down for vertical end.
Be evenly equipped with the vertical tubule 91 of 5～10mm protruding upward on above-mentioned distribution device 3 planes, stop up the cloth gas port to prevent alkaline agent, be conducive to alkaline agent simultaneously and on this plane, further dissolve.
Above-mentioned aeration comprises the hollow vertical tube 82 that the hollow transverse tube 81 of a cruciform and the other end seal, the hollow transverse tube 81 of cruciform and the 82 inner intercommunications of hollow vertical tube from whipping appts 8; The hollow transverse tube of cruciform 81 bottom surfaces are evenly equipped with the aperture 83 of giving vent to anger along the transverse tube axis direction, and hollow vertical tube 82 sides also are evenly equipped with the aperture 83 of giving vent to anger along tube axis direction, to guarantee good aeration effect; The aperture 83 aperture directions of giving vent to anger on the hollow vertical tube 82 are towards counterclockwise, promote aeration when guaranteeing that air-flow sprays to liquid to rotate from whipping appts.
Above-mentioned alkaline agent opening for feed 41 advances alkaline agent device 4 automatically by valve and pipeline are external.
Above-mentioned leakage fluid dram 24 part vertical direction outside tower body is provided with sampling branch 25, is convenient to understand running condition in the tower.
Above-mentioned inlet pipe 7 arranges branch line 61 outside tower body, by valve and pipe connection to ozonizer 6, its effect is that the ozone that ozonizer 6 produces is imported in the circulating current, ozone is killed the colibacillus of excrement in the liquid of natural pond, can reduce COD and the ammonia nitrogen concentration of natural pond liquid simultaneously effectively.
13 by inside and outside two-layer formation at the bottom of above-mentioned cat head 11, tower body 12 and the tower, and the centre is provided with thermal insulation layer 27, is used for reducing the thermosteresis of device operational process.
Embodiment 2:
As shown in Figure 1, absorption unit 2 of the present invention is made up of alkali tourie 21, primary acids tourie 22 and secondary acid tourie 23; Alkali tourie 21 inlet mouth 2A and stripping tower 1 top bleeding point 14 are communicated with by valve and pipeline, and alkali tourie 21 air outlet 2B and primary acids tourie 22 inlet mouth 2C are communicated with by valve and pipeline; Primary acids tourie 22 air outlet 2D and secondary acid tourie 23 inlet mouth 2E are communicated with by valve and pipeline, and secondary acid tourie 23 air outlets and aerator pump 5 inlet mouths are communicated with by valve and pipeline.
In the above-mentioned alkali tourie 21 basic solution is housed, as Ca (OH)
2Solution is for the sour gas that absorbs gas, as CO
2Deng;
In the above-mentioned primary acids tourie 22 the dilute concentration acidic solution being housed, is 30% H as concentration
2SO
4Solution is used for absorption of N H
3
In the above-mentioned secondary acid tourie 23 dense H is housed
2SO
4Solution is for the water vapor that absorbs gas.
Above-mentioned stripping tower 1 all feed inlet and outlets, leakage fluid dram and thief hole, absorption unit 2 all air inlet/outlets are provided with valve between ozone inlet mouth and the aerator pump air outlet, are used for the control of each several part input and output material and are convenient to the adjusting process operation.
The operational process that installs in the present embodiment is as follows:
During startup, the related valve of stripping tower 1 and absorption unit 2 is connected and is gas circulation loop.At first, pump into natural pond liquid by liquid-inlet pipe 3 in stripping tower 1, liquid level is closed liquid-inlet pipe 3 valves during apart from the setting liquid level of distribution device 9 and is stopped to pump into natural pond liquid, so far finishes natural pond liquid and adds.Then, open alkali tourie 21 liquid flowing valve 2K, after alkali tourie 21 is packed volume required alkali lye into, close liquid flowing valve 2K; Open primary acids tourie 22 liquid flowing valve 2L, after primary acids tourie 22 is packed volume required acid solution into, close liquid flowing valve 2L; Open secondary acid tourie 23 liquid flowing valve 2M, to the secondary acid tourie 23 volume required dense H that packs into
2SO
4Close liquid flowing valve 2M behind the solution, so far finish gas absorbent and add.Subsequently, start aerator pump 5 natural pond liquid inflation in the tower, the work of device beginning circulation blow-removing, the gas circulation flowing-path is: degassing tower 1 head space gas → bleeding point 14, liquid → alkali tourie 21 air outlet 2B in valve and pipeline → alkali tourie 21 inlet mouths 2A → alkali tourie 21, liquid → primary acids tourie air outlet 2D in valve and pipeline → primary acids tourie 22 inlet mouths 2C → primary acids tourie 22, valve and pipeline → secondary acid tourie 23 inlet mouths 2E → secondary acid absorbs pot liquid → secondary acid tourie 23 air outlet 2F, valve and pipeline → aerator pump 5 → inlet pipe 7 → aeration are from whipping appts 8 → natural pond liquid → distribution device 9 → airflow baffle 17 → mist eliminator 18 → bleeding point 14.Behind the gas circulation 1h, open alkaline agent opening for feed 41 valves, automatically advance alkaline agent device 4 and in stripping tower 1, add alkaline agent, valve-off stops alkaline agent and adds to the required alkaline agent amount, continues the above-mentioned gas circulation, during time opening sampling branch 25 valve sampling analysis as required, sampling back valve-off is finished sampling work, stop gas circulation work until reaching setting during cycling time, close gas circulation valve 29, open drain tap 28 and discharge gas in the stripping towers 1.At last, allow stripping tower 1 interior liquid through the setting-up time post precipitation, open leakage fluid dram 24 and discharge supernatant liquors, open slag-drip opening 15 deslagginves, so far finish the cycle operation of a batch of natural pond liquefied ammonia nitrogen stripping and nutrient recovery.
In the whole service process of this contrive equipment, in stripping tower 1, to finish gas dissolved and ammonia-nitrogen desorption in the liquid of natural pond, phosphorus (P) and suspended substance flocculation and separate out, the mixed gas that stripping comes out from the liquid of natural pond adds in the recycle gas; Finishing sour gas, ammonia and water vapor in absorption unit 2 absorbs, concrete absorption process is: at first gas is finished acid gas absorption by alkali tourie 21, then gas enters primary acids tourie 22 and finishes the ammonia absorption, obtain ammonium fertilizer, last gas passes through behind the secondary acid tourie 23 water vapor in the gas to be absorbed, and obtains dry pure gas and continues next circulation.
In the operational process of this contrive equipment, open ozonizer 6 valves, ozone joins recycle gas and enters into stripping tower 1 natural pond liquid, kills the intestinal bacteria in the liquid of natural pond.
In the operational process of this contrive equipment, the aeration in the stripping tower 1 becomes a lot of small bubbles from whipping appts 8 with decomposing gas, increases the contact area of gas and natural pond liquid, improves the stripping effect.
In the operational process of this contrive equipment, air-flow is given vent to anger during aperture 83 by the hollow vertical tube 82 of aeration on whipping appts 8 is unidirectional, liquid is produced thrust, the reactive force of this thrust promotes aeration and rotates from whipping appts 8, play the agitator effect, thereby improve alkaline agent dissolving and gas stripping performance.
In the operational process of this contrive equipment, the distribution device 9 that is provided with protruding tracheole plays two effects: the one, and increase powdery or graininess alkaline agent be the residence time in its surface, helps the further dissolving of alkaline agent, and the 2nd, the foam of partition and broken overflow.
In the operational process of this contrive equipment, open natural pond liquid circulation port 30 early gates, start natural pond liquid recycle pump 31, by spraying gun 10 natural pond liquid is atomized into small droplets, circulation and atomizing natural pond liquid play two effects: the one, and natural pond liquid small droplets contacts with alkaline agent and is conducive to continue the dissolving alkaline agent, and the 2nd, the small droplets that is scattered is conducive to the foam of broken overflow.
In the operational process of this contrive equipment, airflow baffle 17 plays three effects: the one, and the water conservancy diversion gas that makes progress, the 2nd, the liquid that downward water conservancy diversion falls above, the 3rd, the overflow foam that produces in the interception stripping.
In the operational process of this contrive equipment, water vapor and foam in the mist eliminator 18 interception air-flows, and form liquid return on airflow baffle 17.
In the operational process of this contrive equipment, utilize temperature and the potential of hydrogen of the pH meter 26 monitoring stripping towers 1 interior natural pond liquid of band temperature survey function.
In the operational process of this contrive equipment, as required from sampling branch 25 sampling analysis, to understand running condition in the tower.
In the operational process of this contrive equipment, utilize thermal insulation layer 27 to keep temperature in the stripping tower.
In the operational process of this contrive equipment, behind every batch of end of run, take out supernatant liquor from leakage fluid dram 24 and do further to use, after discharging throw out, slag-drip opening 15 carries out solid-liquid separation, and solid part can be used as the slow-release fertilizer utilization.
At last, it is also to be noted that what more than enumerate only is for explanation specific embodiments of the invention.Obviously, the invention is not restricted to above examples of implementation, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (11)
1. a circulation enclosed does not have the efficient natural pond of filler liquefied ammonia nitrogen and removes the nutrient retrieving arrangement, and it is characterized in that: it comprises stripping tower and absorption unit; The inlet mouth of the alkali tourie of stripping tower top bleeding point and absorption unit is communicated with by valve and pipeline; The secondary acid tourie air outlet of stripping tower bottom inflow pipe and absorption unit is communicated with by aerator pump and pipeline; Ozonizer and stripping tower bottom inflow pipe are communicated with by valve and pipeline.
2. circulation enclosed according to claim 1 does not have the efficient natural pond of filler liquefied ammonia nitrogen and removes the nutrient retrieving arrangement, it is characterized in that three parts are formed at the bottom of described stripping tower is by cat head, tower body and tower, the upper surface is respectively arranged with ring flange at the bottom of described cat head lower surface, tower body both ends of the surface and the tower, be provided with gasket between the described adjacent flanges dish, and link together with bolt; Described cat head top arranges bleeding point; Described tower body top is provided with mist eliminator, and described mist eliminator is fixed on the back-up block of tower body inwall; Described mist eliminator below is provided with the airflow baffle of two-layer left and right sides staggered arrangement up and down, and described the upper and lower traverse baffle free end is downward-sloping; Described airflow baffle below is provided with liquid-inlet pipe and alkaline agent opening for feed, and described liquid-inlet pipe is set to square, and its horizontal ends import is stretched out outside the tower body, the vertical end outlet is downward, and described alkaline agent opening for feed is set to downward-sloping; Described liquid-inlet pipe outlet below is provided with the natural pond liquid atomization device, and described natural pond liquid atomization device is fixed on the distribution device; Described distribution device is fixed on the back-up block of tower body inwall, and flat mouthful of end of described distribution device connects a hydrops flow deflector of arranging vertically downward, and described hydrops flow deflector is connected with described tower body inner-wall surface and forms the drain passage; Described distribution device below is provided with natural pond liquid circulation port and leakage fluid dram in the tower body middle and lower part; Described leakage fluid dram below is provided with the pH meter of band temperature survey function; Be provided with inlet pipe at the bottom of the described tower, connecting aeration from whipping appts with bearing on the air outlet of described inlet pipe medial extremity, described inlet pipe below is provided with natural pond liquid tray, and the bottom is provided with slag-drip opening at the bottom of the described tower, and outside surface is being connected and is blowing institute's tower bracing frame at the bottom of the described tower.
3. circulation enclosed according to claim 1 does not have the efficient natural pond of filler liquefied ammonia nitrogen and removes the nutrient retrieving arrangement, it is characterized in that described absorption unit is made up of alkali tourie, primary acids tourie and secondary acid tourie; Alkali tourie, primary acids tourie and secondary acid tourie are provided with inlet mouth, air outlet, liquid adding hole and leakage fluid dram; Alkali tourie inlet mouth and stripping tower top bleeding point are communicated with by valve and pipeline, alkali tourie air outlet and primary acids tourie inlet mouth are communicated with by valve and pipeline, primary acids tourie air outlet and secondary acid tourie inlet mouth are communicated with by valve and pipeline, and secondary acid tourie air outlet and aerator pump inlet mouth are communicated with by valve and pipeline.
4. circulation enclosed according to claim 1 does not have the efficient natural pond of filler liquefied ammonia nitrogen and removes the nutrient retrieving arrangement, it is characterized in that described bleeding point place arranges exhaust branch.
5. circulation enclosed according to claim 1 does not have the efficient natural pond of filler liquefied ammonia nitrogen and removes the nutrient retrieving arrangement, it is characterized in that being provided between described liquid-inlet pipe and the natural pond liquid circulation port adding natural pond liquid and carrying out the branch line that natural pond liquid circulates to stripping tower 1, described branch line is made up of natural pond liquid recycle pump, liquid flowing valve, circulation valve and pipeline.
6. circulation enclosed according to claim 1 does not have the efficient natural pond of filler liquefied ammonia nitrogen and removes the nutrient retrieving arrangement, it is characterized in that described alkaline agent opening for feed by valve and pipeline with advance the alkaline agent device automatically and be connected.
7. circulation enclosed according to claim 1 does not have the efficient natural pond of filler liquefied ammonia nitrogen and removes the nutrient retrieving arrangement, it is characterized in that described leakage fluid dram outlet section is provided for to the branch line of exterior liquid and sampling.
8. circulation enclosed according to claim 1 does not have the efficient natural pond of filler liquefied ammonia nitrogen and removes the nutrient retrieving arrangement, it is characterized in that between described inlet pipe entrance and the described aerator pump air outlet ozone inlet mouth being set, described ozone inlet mouth by valve and pipe connection to ozonizer.
9. circulation enclosed according to claim 1 does not have the efficient natural pond of filler liquefied ammonia nitrogen and removes the nutrient retrieving arrangement, it is characterized in that described stripping tower tower body middle and lower part is installed to have the pH meter that temperature shows.
10. circulation enclosed according to claim 1 does not have the efficient natural pond of filler liquefied ammonia nitrogen and removes the nutrient retrieving arrangement, it is characterized in that at the bottom of described cat head, tower body and the tower that by inside and outside two-layer formation, the centre is provided with thermal insulation layer.
Do not remove the nutrient retrieving arrangement 11. circulation enclosed according to claim 1 has the efficient natural pond of filler liquefied ammonia nitrogen, it is characterized in that described mist eliminator arranges wadding fibrous filler or sponge or protruded packing or their mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310224801.1A CN103274548B (en) | 2013-06-07 | 2013-06-07 | Cycle closed type filler-free high-efficiency ammonia nitrogen removing and nutrient recovery device of biogas slurry |
Applications Claiming Priority (1)
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| CN104211214A (en) * | 2014-08-26 | 2014-12-17 | 常州大学 | High-concentration ammonia nitrogen device in treatment of pesticide wastewater by surface active catalyst |
| CN104211255A (en) * | 2014-08-26 | 2014-12-17 | 常州大学 | Device for treating high-concentration ammonia nitrogen in fertilizer wastewater via surface active catalyst |
| CN104211215A (en) * | 2014-08-26 | 2014-12-17 | 常州大学 | Device for treating high concentration ammonia nitrogen in metallurgical wastewater by using surface active catalyst |
| CN105236609A (en) * | 2015-09-11 | 2016-01-13 | 浙江南化防腐设备有限公司 | Efficient ammonia nitrogen blowoff and hexamethylenetetramine synthesis closed loop treatment system |
| CN106186136A (en) * | 2016-09-04 | 2016-12-07 | 谢永宁 | A kind of ammonia-nitrogen desorption absorption plant |
| CN106396184A (en) * | 2016-11-17 | 2017-02-15 | 上海晶宇环境工程股份有限公司 | Ammonia stripping process and device for high-ammonia-nitrogen wastewater |
| CN109182098A (en) * | 2018-10-10 | 2019-01-11 | 南京和润隆环保科技有限公司 | A kind of methane-generating pit with Stirring pipeline |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104211214A (en) * | 2014-08-26 | 2014-12-17 | 常州大学 | High-concentration ammonia nitrogen device in treatment of pesticide wastewater by surface active catalyst |
| CN104211255A (en) * | 2014-08-26 | 2014-12-17 | 常州大学 | Device for treating high-concentration ammonia nitrogen in fertilizer wastewater via surface active catalyst |
| CN104211215A (en) * | 2014-08-26 | 2014-12-17 | 常州大学 | Device for treating high concentration ammonia nitrogen in metallurgical wastewater by using surface active catalyst |
| CN105236609A (en) * | 2015-09-11 | 2016-01-13 | 浙江南化防腐设备有限公司 | Efficient ammonia nitrogen blowoff and hexamethylenetetramine synthesis closed loop treatment system |
| CN106186136A (en) * | 2016-09-04 | 2016-12-07 | 谢永宁 | A kind of ammonia-nitrogen desorption absorption plant |
| CN106396184A (en) * | 2016-11-17 | 2017-02-15 | 上海晶宇环境工程股份有限公司 | Ammonia stripping process and device for high-ammonia-nitrogen wastewater |
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