CN106517667A - Device and method for recycling nitrogen and phosphorus from waste water of digestion tank - Google Patents

Device and method for recycling nitrogen and phosphorus from waste water of digestion tank Download PDF

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Publication number
CN106517667A
CN106517667A CN201611162209.3A CN201611162209A CN106517667A CN 106517667 A CN106517667 A CN 106517667A CN 201611162209 A CN201611162209 A CN 201611162209A CN 106517667 A CN106517667 A CN 106517667A
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China
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sewage
pond
sludge
reaction pond
crystal
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CN201611162209.3A
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CN106517667B (en
Inventor
邱立平
卢立泉
石亮
邱琪
宋茜茜
王琰
程仁振
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University of Jinan
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University of Jinan
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/26—Phosphates
    • C01B25/45—Phosphates containing plural metal, or metal and ammonium
    • C01B25/451—Phosphates containing plural metal, or metal and ammonium containing metal and ammonium
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/02—Biological treatment
    • C02F11/04—Anaerobic treatment; Production of methane by such processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F2001/5218—Crystallization
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Molecular Biology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

The invention relates to a device and a method for recycling nitrogen and phosphorus from waste water of a digestion tank, and belongs to the technical field of waste water disposal. An integrated device consists of an overflow pond, a pretreatment pond, a multifunctional inspection well and a crystalizing reaction pond. The method includes steps that sewage enters a digestion tank processing system through a discharge pipe, wherein the sewage firstly enters the pretreatment pond through a grid, and sludge is sunken, gas generated from reaction and fermentation is discharged or recycled from the gas outlet, and liquid supernatant of sewage reaches the lowest water line of the water outlet and enters the crystalizing reaction pond through the pipeline. Sewage entered the crystalizing reaction pond enters the crystalizing reaction pond firstly through interception of a light filter layer and the degrading function of attached microorganisms, magnesium chloride and alkaline solution are added as assistance, thus sewage overflow forms magnesium ammonium phosphate crystal greatly and then recycled; the treated sewage is flowed to a municipal sewage pipe network. If water amount is suddenly increased or the pretreatment pond has sudden fault, sewage directly enters the overflow pond and flows into the municipal sewage pipe network. The sewerage treatment ability of the digestion tank is strong, nitrogen and phosphorus nutrients can be recycled; besides, sewage treatment and resource utilization of sewage and sludge at the same time can be realized; thus the nitrogen and phosphorus load of sewage plant can be effectively reduced; the novel resource processing technology can meet the sustainable development requirement.

Description

A kind of device and method that nitrogen phosphorus is reclaimed from septic tank wastewater
Technical field
The invention belongs to technical field of waste water processing, more particularly to a kind of device that nitrogen phosphorus is reclaimed from septic tank wastewater and Method.
Background technology
The water body problem that China's nitrogen and phosphorus pollution causes is extremely serious, used as the septic tank of municipal sewage primary treatment structures Although having played positive role in the process of urbanization, its drawback is also slowly highlighted, and What is more has proposed perfect collection The city of middle sewage treatment facility can not set the judgement of septic tank, show that the effect of nowadays septic tank is slowly weakened, so opening up Exhibition septic tank function, finds new septic tank type extremely urgent.
Septic tank removal efficiency of nitrogen and phosphorus is not high and consumes a certain amount of organic matter, and nutritive salt enters municipal drain with sewage Net is focused on to sewage treatment plant, can cause Sewage Plant carbon source relative deficiency when municipal wastewater is processed, and biochemical is poor, takes off The problems such as nitrogen phosphor-removing effect is not good, it requires that enhanced sewage, into the pretreatment mode before Sewage Plant, mitigates the place of Sewage Plant Reason load.
Traditional denitrogenation dephosphorizing mode operating cost is high, and lacking of having that theoretical precipitated product is unable to that throughput utilizes Fall into, process of the ammoniomagnesium phosphate crystal recycle in high nitrogen phosphorus waste water such as sludge-digestion liquid, animal farm wastewater in the last few years Cheng Dangzhong, almost industry is blank for the application in septic tank wastewater process.Found according to the early stage investigation to septic tank wastewater, this Kind waste water quality suitably adds the compound solution in magnesium source and can obtain ammonium magnesium phosphate crystal.
Nowadays the septic tank that China applies generally two lattice or three compartment septic tanks, the septic tank of this form are doomed The unicity of digestion tank structure and processing mode, and the digestion tank structure for seldom having other forms on market occurs, and utilizes The thinking design of nutrient removal and resource improves digestion tank structure and function to the popularization of Practical Project with great meaning Justice.
The content of the invention
The present invention is for traditional septic tank single function, after processing, water outlet nitrogen and phosphorus load is excessive, be difficult to Sewage The drawbacks of mud is recycled simultaneously, there is provided a kind of that nitrogen phosphor resource is reclaimed from septic tank wastewater with the one kind for improving the problems referred to above Device and method.
In order to realize above-mentioned technical problem, the present invention is implemented by following technical scheme.
A kind of device and method that nitrogen phosphorus is reclaimed from septic tank wastewater, it is characterised in that the integrated apparatus are mainly by overflowing Stream pond, pretreatment pool, multifunctional examining well and crystallization reaction pond combine.Run-off is the guarantee type structure that sewage enters system Thing is built, standby pool when pretreatment pool is overhauled is also served as, is connected with crystallization reaction bottom of pond portion by outlet pipe；Pretreatment pool is one Individual solid-liquid-gas three phase separate tank, wherein, sludge is periodically drawn clearly, and the gas of generation is discharged or collected by gas outlet, and outlet pipe extends To crystallization reaction pond；The retention of sewage Jing filtrates and the degraded of attached microbial enter crystal region, and crystal is become larger to precipitation Area, periodically reclaims and makees slow-release fertilizer use.
The device that nitrogen phosphorus is reclaimed from septic tank wastewater that the present invention is provided, it is characterised in that described run-off is brick The square structure plastered, bottom have outlet pipe to be connected to the system outlet canal reserved outside crystallization reaction pond, are provided with outlet pipe Check-valves, if the water yield occur increasing sharply or pretreatment pool burst accident, run-off plays interim water inlet effect, connects with pretreatment pool Part arranges weir；Described pretreatment pool point sludge blanket, air chamber and three, contraminated zone part, the gas that air chamber is collected is by going out Gas port is discharged or is collected, and sludge is periodically drawn clearly mouth and drawn clearly from reserved, and sewage flow to the continuation of crystallization reaction pond by outlet pipe Reason, is provided with grid in water inlet position；Described crystallization reaction pond is made up of filtrate packed layer and crystalline deposit Disengagement zone；Institute The multifunctional examining well stated is provided between cat ladder, small-sized dosing, sludge clearing mouth and crystal reclaim collection port, it is intended to for other units Service.
The device that nitrogen phosphorus is reclaimed from septic tank that the present invention is provided, it is characterised in that the filter in described filtrate packed layer Material selects light ceramic, and the feature of the correlation of the filler is：Density is little, intensity is high, water absorption rate is big, insulation, durable, heat resistanceheat resistant etc., Density is 300-500kg/m3；Described crystallization reaction pond is the precast construction that fiberglass makes, using inverted triangle funnel shaped； Between described small-sized dosing, quantitative mixed chlorinated magnesium solution adds sodium hydroxide solution to adjust pH to supplement magnesium ion, periodically Value, produces precipitation for sewage to crystal region, beneficial to recovery.
The present invention is to provide a kind of method that nitrogen phosphorus is reclaimed from septic tank wastewater, it is characterised in that including following step Suddenly.
Step 1, sewage enter septic tank processing system by user's drainpipe, first pass around grid and flow into pretreatment pool, Sludge sinks, and reaction fermentation produces gas and discharged or reclaimed by gas outlet, and sewage supernatant reaches delivery port lowest water level line Jing Pipeline enters crystallization reaction pond.
Step 2, the sewage into crystallization reaction pond first pass around the degraded dammed with attached microbial of light filter material layer Effect stream by adding alkali lye, is made pH control in 7.5-9, is monitored by pH surveymeters, while daily according to dirt to crystalline deposit area Discharge automatic feeding magnesium chloride solution supplements magnesium source, makes sewage excessively stream in crystalline deposit area, at utmost forms ammonium magnesium phosphate Crystal is reclaimed away from system after filter screen by crystal, sewage, and remaining clear liquid flows to municipal wastewater pipe network.If the water yield Increase sharply or pretreatment pool catastrophic failure, sewage is directly entered run-off Jing connecting tubes and flows to municipal wastewater pipe network.
Step 3, setting sludge clearing and crystal return period are 180 days, first by suspended sludge layer during sludge clearing Layer sewage by sewage emptying reserved opening be evacuated to run-off, be manually entered multifunctional examining well, by draw clearly mouth carry out machinery draw clearly, Crystal is collected by crystal recovery port, is drawn clearly and can suitably be adjusted according to concrete actual conditions with return period.
The present invention is to provide a kind of method that nitrogen phosphorus is reclaimed from septic tank wastewater, with following 5 advantages.
(1) solve that septic tank form is single, the not high problem for the treatment of effeciency is capable of achieving synchronous denitrification dephosphorizing.
(2) by the Real-Time Control Strategy based on pH value, it is possible to achieve and stable crystalline process, beneficial to ammonium magnesium phosphate crystal Recovery.
(3) sludge yield is low, saves Treatment of Sludge expense.
(4) sewage disposal and sludge, sewage are capable of achieving while the multiple effect of recycling.
(5) the nitrogen phosphorus for being effectively lowered into sewage treatment plant processes load, is conducive to the comprehensive utilization of Sewage Plant carbon source, carries High water treatment effect.
Description of the drawings
Fig. 1 is the integrated apparatus combination diagram of the recovery nitrogen phosphorus from septic tank wastewater, and Fig. 2 is that pretreatment pool is illustrated Figure, Fig. 3 are multifunctional examining well schematic diagram.
In Fig. 1：1- run-offs, 2- grids, 3- gas outlets, 4- sludge blankets, 5- cat ladders, between the small-sized dosings of 6-, 7- crystal is returned Close up, 8- pretreatment pool outlet pipes（Crystallization reaction pond water inlet pipe）, 9- filter screens, 10- connecting tubes, 11- filtrates（Light ceramic）Layer, 12- crystallization reactions pond, 13- system outlet canals, 14- check-valves, 15- sewage emptying reserved opening, 16-pH real-time monitoring meters, 17- are dirty Mud draws clearly mouth, 18- weirs.
The device of nitrogen phosphorus is reclaimed from septic tank wastewater, by run-off, pretreatment pool, multifunctional examining well and crystallization reaction Four part of pond combines, wherein, run-off and multifunctional examining well belong to support Unit, and pretreatment pool and crystallization reaction pond are Main body reaction member.After reaction, water outlet ammonia nitrogen and phosphorus concentration are substantially reduced, and reclaiming collection port in crystallization has ammoniomagnesium phosphate crystal to give birth to Into, meanwhile, sludge and crystallized product are transported outward from multifunctional examining well, while sewage and sludge are jointly processed by, can also be reclaimed The abundant innoxious slow release fertilizer of Nitrogen-and Phosphorus-containing.
From septic tank wastewater reclaim nitrogen phosphorus device, filtrate selected by filter material layer 11 be light ceramic, the correlation of the filler Feature be：Density is little, intensity is high, water absorption rate is big, insulation, durable, heat resistanceheat resistant etc., density is 300-500kg/m3, raw material is easy to get； When the water yield is constant, filtrate is in suspended state, is not easily blocked, water quality can be carried out at reinforcing before into crystallization reaction Reason, removes a part of suspension and other impurity, is more beneficial for the carrying out of secondary crystallization reaction, additionally, filtrate also plays adjustment stream The effect of speed.
Alkalescence condition is more beneficial for the carrying out of ammoniomagnesium phosphate crystal reaction, the device 6 setting pH realities between small-sized dosing When monitoring meter 16, to pop one's head in and go deep into crystallization reaction pond by filter material layer, and to additional protection of popping one's head in.If pH is lower slightly, take Enhancements, are mixed with magnesium chloride with NaOH low concentration solution and are added.
Delivery port in crystallization reaction pond arranges filter screen 9, and can effectively intercept sediment makes separation of solid and liquid, it is to avoid the knot of formation Brilliant product causes to be difficult to recycle with sewage loss.
Run-off is interconnected with crystallization reaction pond, therefore check-valves 14 is arranged in connecting tube 10, makes the dirt in run-off Water keeps one-way flow.
Septic tank wastewater water quality is complicated, and grid 2 is from the fine fack that spacing is 50mm, and does anti-corrosion protection process, useless Water initially enters system stages and plays initial filter effect, retains contamination thing.
Specific embodiment
Embodiments of the invention are described in further detail below in conjunction with accompanying drawing.
In present example, as shown in figure 1, septic tank wastewater collects the system of entrance, the coarse filtration of Jing grids 2 first flows into pre- Processing pond, due to anaerobic environment, produces the gases such as methane through reaction fermentation, rises along air chamber wall, reach ground gas outlet 3, If value, can also be reclaimed.Sludge sinks to sludge blanket 4, with reference to traditional septic tank setting cycle of drawing clearly is 180 days, can suitably be adjusted according to concrete practical operation situation, periodically discharge sludge to ensure volume availability, when sludge is discharged Machinery is carried out by sludge clearing mouth to draw clearly, staff enters multifunctional examining well by cat ladder 5, draws clearly mouth and is arranged on multifunctional examining Well is looked near pretreatment pool side, is the hole of 50cm × 50cm.Waste water flows into crystallization reaction pond 12 by outlet pipe and continues with, Damming for the sewage Jing light filter materials layer 11 of inflow enter crystalline deposit recovery area with the degradation of attached microbial, now needs The primary condition of ammoniomagnesium phosphate crystal is reached, if the reading of pH real-time monitorings meter 16 is less than 7.5, it is necessary to add NaOH molten Liquid is to adjust reaction acid-base condition, additionally, 6 should also continue additional magnesium source between small-sized dosing, to ensure the purity of product. Sewage keeps certain fluidised form flowing reactive in crystallizing pond, solidliquid mixture to flow through filter screen 9 and separated, and crystallized product is by reclaiming Mouth 7 is collected, and after filter, outside the prefabricated crystallizing ponds of waste water Jing, reserved part flows to municipal wastewater pipe network to system outlet canal 13.Such as The fruit discharge of sewage is increased sharply, and newly enters sewage Jing weirs 18 and flows into run-off 1, if pretreatment pool breaks down, first by pretreatment pool Above middle sludge suspension layer, sewage Jing emptyings 15 suction run-off of reserved opening, is overhauled after sludge clearing, flows out run-off 1 Sewage Jing connecting tubes 10 flow into last system outlet canal 13, are provided with check-valves 14, it is ensured that sewage unidirectionally flows in connecting tube 10 It is dynamic.
With certain dependents' district septic tank wastewater as process object, the denitrogenation dephosphorizing and ammonium magnesium phosphate for having investigated this system reclaims special Property, the removal that ammonia nitrogen and orthophosphates are measured during experiment is all good than the treatment effect of original septic tank, and clearance is carried respectively High by 32% and 51%, it is ammonium magnesium phosphate that crystallized product Jing characterizes determination, and purity is higher.
Above specific embodiment not makees any pro forma restriction to the present invention, without departing from described in claim Technical scheme on the premise of also have other variants and remodeling.

Claims (4)

1. a kind of device that nitrogen phosphorus is reclaimed from septic tank wastewater, it is characterised in that the integrated apparatus are mainly by run-off, pre- Processing pond, multifunctional examining well and crystallization reaction pond combine；Run-off is the guarantee type structures that sewage enters system, Standby pool when overhauling as pretreatment pool；Pretreatment pool is a solid-liquid-gas three phase separate tank, wherein, sludge is periodically drawn clearly, The gas that reaction fermentation is produced is discharged or collected by gas outlet, and outlet pipe extends to crystallization reaction pond；The retention of sewage Jing filtrates Crystal region is entered with the degradation of attached microbial, crystal is become larger to settling zone, periodically reclaim and make slow-release fertilizer use.
2. the device that nitrogen phosphorus is reclaimed from septic tank wastewater according to claim 1, described run-off are plastered for brick Square structure, bottom have outlet pipe be connected to outside crystallization reaction pond reserve system outlet canal, non-return is provided with outlet pipe Valve, if the water yield occur increasing sharply or pretreatment pool burst accident, run-off plays interim water inlet effect, with pretreatment pool joining part Weir is set；Described pretreatment pool point sludge blanket, air chamber and three, contraminated zone part, the gas that air chamber is collected is by gas outlet Discharge or collect, sludge is periodically drawn clearly mouth and drawn clearly from reserved, and sewage flow to crystallization reaction pond by outlet pipe and continues with, Water inlet position is provided with grid；Described crystallization reaction pond is made up of filtrate packed layer and crystalline deposit Disengagement zone；Described Multifunctional examining well is provided between cat ladder, small-sized dosing, sludge clearing mouth and crystal reclaim collection port, it is intended to taken for other units Business.
3. it is according to claim 2 from septic tank wastewater reclaim nitrogen phosphorus device, it is characterised in that described filtrate is filled out The filtrate filled in layer selects light ceramic, and the precast construction that described crystallization reaction pond is made using fiberglass is inverted triangle leakage Bucket shape shape；Between described small-sized dosing quantitative mixed chlorinated magnesium solution sodium hydroxide solution is added to supplement magnesium ion, periodically with PH value is adjusted, and precipitation is produced for sewage to crystal region, beneficial to recovery.
4. the method for device according to claim 1, it is characterised in that comprise the following steps：
Step 1, sewage enter septic tank processing system by user's drainpipe, first pass around grid and flow into pretreatment pool, sludge Sink, reaction fermentation produces gas and discharged or reclaimed by gas outlet, and sewage supernatant reaches delivery port lowest water level line Jing pipelines Into crystallization reaction pond；
Step 2, the sewage into crystallization reaction pond first pass around the degradation dammed with attached microbial of light filter material layer Crystalline deposit area is flowed, by adding alkali lye, is made pH controls in 7.5-9, is monitored by pH real-time detections meter, while daily according to dirt Discharge automatic feeding magnesium chloride solution supplements magnesium source, makes sewage excessively stream in crystalline deposit area, at utmost forms ammonium magnesium phosphate Crystal is reclaimed away from system after filter screen by crystal, sewage, and remaining clear liquid flows to municipal wastewater pipe network, if the water yield Increase sharply or pretreatment pool catastrophic failure, sewage is directly entered run-off Jing connecting tubes and flows to municipal wastewater pipe network；
Step 3, setting sludge clearing and crystal return period are 180 days, first that suspended sludge layer upper strata is dirty during sludge clearing Water by sewage emptying reserved opening be evacuated to run-off, be manually entered multifunctional examining well, by draw clearly mouth carry out machinery draw clearly, crystal It is collected by crystal recovery port, draws clearly and can suitably be adjusted according to concrete actual conditions with return period.
CN201611162209.3A 2016-12-15 2016-12-15 A kind of device and method recycling nitrogen phosphorus from septic tank wastewater Active CN106517667B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109879562A (en) * 2019-03-27 2019-06-14 中节能城市节能研究院有限公司 A kind of septic tank device for exempting to draw clearly
CN110963596A (en) * 2018-09-29 2020-04-07 福建申远新材料有限公司 Dephosphorization reactor for struvite crystallization method and application thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101811688A (en) * 2010-05-07 2010-08-25 华侨大学 Device and process method for recovering phosphorus from waste water by struvite precipitation method
CN204918330U (en) * 2015-07-07 2015-12-30 湖南易净环保科技有限公司 Imitate filtration type glass tempering manure pit by force
CN205528106U (en) * 2016-01-27 2016-08-31 山东金昊三扬环保机械股份有限公司 Ammonia nitrogen blows and takes off MAP sediment device
CN106145504A (en) * 2015-04-24 2016-11-23 中国科学院大学 A kind of method of phosphorus in rapidly and efficiently synchronization recovery source-separated urine and anaerobic tank anaerobic supernatant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101811688A (en) * 2010-05-07 2010-08-25 华侨大学 Device and process method for recovering phosphorus from waste water by struvite precipitation method
CN106145504A (en) * 2015-04-24 2016-11-23 中国科学院大学 A kind of method of phosphorus in rapidly and efficiently synchronization recovery source-separated urine and anaerobic tank anaerobic supernatant
CN204918330U (en) * 2015-07-07 2015-12-30 湖南易净环保科技有限公司 Imitate filtration type glass tempering manure pit by force
CN205528106U (en) * 2016-01-27 2016-08-31 山东金昊三扬环保机械股份有限公司 Ammonia nitrogen blows and takes off MAP sediment device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110963596A (en) * 2018-09-29 2020-04-07 福建申远新材料有限公司 Dephosphorization reactor for struvite crystallization method and application thereof
CN109879562A (en) * 2019-03-27 2019-06-14 中节能城市节能研究院有限公司 A kind of septic tank device for exempting to draw clearly

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