CN110451729A - A kind of processing method of high concentration organism P wastewater - Google Patents
A kind of processing method of high concentration organism P wastewater Download PDFInfo
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- CN110451729A CN110451729A CN201910775236.5A CN201910775236A CN110451729A CN 110451729 A CN110451729 A CN 110451729A CN 201910775236 A CN201910775236 A CN 201910775236A CN 110451729 A CN110451729 A CN 110451729A
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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Abstract
The invention belongs to technical field of waste water processing, and in particular to a kind of processing method of high concentration organism P wastewater.This method mainly comprises the steps that A, is passed through high concentration organism P wastewater in conditioning tank 1 after fine fack filters, and acid for adjusting pH is added into waste water to 4~6；B, the waste water in conditioning tank is pumped to the aerobic MBR series connection membrane bioreactor of anaerobism MBR-；C, it will be discharged into conditioning tank 2 by the supernatant of step C processing, adjusts pH to 2~7, then waste water is discharged into coagulating basin, nano-magnetic powder is added and is precipitated, sediment contains phosphoric acid molysite, is discharged after filters pressing.The removal rate of phosphorus can be made to be greatly improved using processing method of the invention, enable total phosphorus index stably reaching standard；And phosphate can be recycled, secondary pollution caused by phosphorus containing sludge is emitted into environment is avoided.
Description
Technical field
The invention belongs to technical field of waste water processing, and in particular to a kind of processing method of high concentration organism P wastewater.
Background technique
Water eutrophication is one of current main environmental problem, and phosphorus be cause water eutrophication it is important because
Element, the discharge of untreated phosphorus-containing wastewater and municipal wastewater not only cause significant damage to ecological environment, also seriously affect
The sustainable development of people's lives quality and social economy.According to incompletely statistics, the organic phosphorous chemical industry yield in China accounts for national phosphorus
40 or more the percent of chemical industry yield, and wherein have the product annual output of 60 or more percent organic phosphorus Chemical Manufacture
At 10,000 tons or more.
Therefore, a kind of methods and techniques of efficiently removal high concentration organism P wastewater are developed, and are applied at actual sewage
Among science and engineering journey, it is of great significance.
Chinese invention patent CN108751331A discloses a kind of method and process system for handling waste water, and this method includes
Following steps: (1) adsorbing: zirconium hydroxide being added into waste water, waste water, zirconium hydroxide is made to come into full contact with to form absorption system, inhales
Pollutant in attached waste water, after the completion of adsorption reaction, the waste water being separated by solid-liquid separation after being adsorbed and the hydrogen-oxygen for being adsorbed with pollutant
Change zirconium；(2) it is desorbed: coming into full contact with the zirconium hydroxide for being adsorbed with pollutant and potassium hydroxide/sodium solution to form desorption system, it is dirty
Dye object be desorbed from zirconium hydroxide obtains pollutant solution and regeneration zirconium hydroxide, separation of solid and liquid obtain pollutant solution with can
The regeneration zirconium hydroxide recycled.Although this method can effectively remove organic phosphorus in waste water, phosphorus is as a kind of nutrition
Substance is disposed in environment after treatment, causes the waste of resource.
In recent years, MBR membrane bioreactor due to stable effluent quality, excess sludge production is few, occupied area is small,
It is easy to the advantages that automatically controlling, is applied in sewage treatment project more and more.Chinese invention patent CN110040915A
A kind of processing method of organism P wastewater containing high concentration is disclosed, includes the following steps: to put into high-concentration waste water in conditioning tank, adjust
Water-saving matter is neutrality, and temperature is controlled at 20~35 DEG C；Waste water in conditioning tank is pumped to ABR anaerobic pond, it is organic in waste water
Phosphorus is decomposed, and organic phosphorus be separated generates positive phosphorus, and most of organic matter is effectively decomposed；It will be clear in ABR anaerobic pond
Liquid enters MBR membrane bioreactor, and most of phosphorus, phosphorous in waste water are oxidized the phosphorus that is positive and precipitate, remaining few in waste water
Amount organic matter is effectively decomposed；Clear liquid in MBR membrane bioreactor enters crystallizing-dephosphorizing device, is effectively separated to phosphorus；Knot
Clear liquid in brilliant phosphorous remover enters electric flocculation phosphorous remover, carries out to the secondary phosphorus not being oxidized on a small quantity remaining in water, phosphorous deep
Degree processing is discharged after up to standard.But MBR reactor be easy to appear fouling membrane especially sludge bulking the problem of, cause membrane module
The decline of performance, the reduction of water treatment efficiency.
Therefore, if can develop one kind can recycle the P elements in waste water and effectively inhibit fouling membrane
MBR Membrane Bioreactor for Wastewater Treatment high concentration organism P wastewater technique, be of great practical significance.
Summary of the invention
In order to solve defect existing in the prior art, the purpose of the present invention is to provide one kind can recycle phosphorus member
Element, and the processing method of the high concentration organism P wastewater of fouling membrane can be inhibited, specific technical solution is as follows:
A kind of processing method of high concentration organism P wastewater, which is characterized in that method includes the following steps:
A, high concentration organism P wastewater is passed through in conditioning tank 1 after fine fack filters, acid for adjusting pH is added into waste water
To 4~6；
B, the waste water in conditioning tank is pumped to the aerobic MBR series connection membrane bioreactor of anaerobism MBR-；
C, it will be discharged into conditioning tank 2 by the supernatant of step C processing, adjusts pH to 2~7, then waste water is discharged into coagulating basin,
Nano-magnetic powder is added to be precipitated, sediment contains phosphoric acid molysite, is discharged after filters pressing.
Further, the acid in the step A is hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid or oxalic acid, preferably oxalic acid.
Further, the anaerobism MBR temperature of reactor is 25~35 DEG C, preferably 30 DEG C；Circulation, recycle ratio in water outlet
It is 9；The aerobic MBR reactor uses blast aeration, and dissolved oxygen concentration is 6.0~9.0mg/L, preferably 8.0mg/L；Temperature
It is 22~28 DEG C, preferably 25 DEG C.
Further, the hydraulic detention time of the aerobic MBR series connection membrane bioreactor of the anaerobism MBR- is 18h；Film group
The every operation 30min of part stops 15min.
Further, liquor natrii hypochloritis is added in the step B anaerobism MBR reactor, concentration is 40~100mg/L,
Preferably 60mg/L.
Further, the nano-magnetic powder the preparation method is as follows: prepare iron chloride and frerrous chloride mixed aqueous solution,
50 DEG C are heated to, sodium hydrate aqueous solution is added dropwise, stirs evenly, is heated to 60 DEG C, 40-60min is stirred, obtains black mixture,
It is washed with deionized water and dehydrated alcohol, it is dry, it grinds to get nano-magnetic powder.
Further, the mass ratio of the iron chloride and frerrous chloride is 1:5.
The present invention is using the aerobic MBR series connection membrane bioreactor of anaerobism MBR-.The use of aerobic MBR not only has tradition
Aerobe method reaction speed is fast, the advantages that residence time is short, organic matter discomposing effect is good, further improve mud-water separation effect
The problems such as rate is low, sludge loss, biomass are few.Different from aerobic MBR, anaerobism MBR does not need aeration energy saving, moreover it is possible to recycle
Methane Resources, and organic loading and anti impulsion load ability also greatly promote, therefore it is usually used in various municipal wastewaters and highly concentrated
It spends in wastewater treatment difficult to degrade, but anaerobic reactor has the problems such as starting is slow, high organic loading lower film is seriously polluted.Silk
The excessive multiplication of shape bacterium is to cause one of principal element of fouling membrane, and in the sludge bulking stage, the speed of growth of sludge wadding body becomes
Slowly, cause der Pilz growth relatively too fast, and stretch out outside zoogloea and cause sludge bulking.There are various inside sludge wadding body
Synergistic effect and antagonism, including electrostatic interaction, steric hindrance, hydrogen bond, hydrophobic interaction, der Pilz are built bridge.Work as silk
When shape bacterium excessive multiplication, to build bridge, under extracellular polymeric bonding and relative hydrophobic effect in der Pilz, sludge wadding body becomes larger,
But the increase of sludge wadding body carried charge causes wadding body internal electrostatic repulsive force to increase, and finally makes sludge wadding body big and loose.In
Der Pilz is easily absorbing, is wound into film wire surface in the operational process of MBR, forms closely knit, thick big fouling membrane cake layer.But
It is that der Pilz can play the role of reinforced membrane surface contaminant, and when lacking der Pilz in sludge wadding body, sludge wadding body is thinner
It is small, it can equally cause serious Pore Blocking to pollute.That is, der Pilz is excessive or very few can cause fouling membrane.
The present invention inhibits the growth of der Pilz using sodium hypochlorite, to achieve the purpose that prevent fouling membrane.Sodium hypochlorite
Oxidation the mycelia of microfilament bacterium can be truncated, sodium hypochlorite dosage is more, and the mycelia being broken in sludge is more, stretches out and lives
The mycelia on property sludge wadding body surface is shorter, is more obvious to the inhibiting effect of der Pilz.On the other hand, the appropriate of sodium hypochlorite adds
The settling property of sludge can effectively be improved, but if dosage is excessive, since the mycelia of fracture is free in sludge, meeting
Serious influence sludge settling property.Applicant of the present invention passes through a large amount of experimental study, has obtained the best of sodium hypochlorite
Dosage.
The present invention additionally uses waste water of the nano-magnetic powder conditioning Jing Guo Membrane Bioreactor for Wastewater Treatment, the composition iron chloride of magnetic powder
The magnetic powder of inherently excellent flocculant, Nano grade can be such that wadding body increases, and zeta potential reduces, and improve flocculated efficiency, simultaneously
Also the rate of water loss of the sludge of formation is improved, dewatering is improved；Nano-magnetic powder has very high surface energy, covalent bond and molecule
Between affinity interaction etc. nano-magnetic powder surface is charged, the isoelectric point of nano-magnetic powder is pH=7.2, as pH < 7.2, magnetic powder
Positively charged, sludge is negatively charged, and substance in sludge such as protein, rouge glue, colloidal substance, dissolved organic matter etc. can directly be inhaled
Be attached on nano-magnetic powder, in conjunction with magnetic powder per se with magnetic field under the action of, the collision frequency between particle is improved, and makes sludge
Wadding body is combined into bigger sludge wadding body, and magnetic field and magnetic powder effect generate magnetic and squeeze, and improves the rate of settling of sludge wadding body, so that
Sludge wadding body and water are rapidly separated, and sludge settling volume is reduced.Nano-magnetic powder can also be certain acid with sour co-conditioning sludge
Sludge structure can be destroyed under environment, make extracellular object EPS hydrolysis, microbial cell rupture in sludge, to make in sludge wadding body
Portion's Interstitial Water, intercellular space water release, and show free aqueous nature；The moisture distribution of sludge changes, and increases dirty
Mud can degree of dehydration, improve the dewatering of sludge；The hydrogen ion that acidolysis separates out is positively charged, can reduce the zeta potential of sludge,
Compression double electric layer keeps sludge de- steady.By the processing of membrane bioreactor, the biochemical substance in waste water has largely been obtained
Processing, and the effect of above-mentioned nano-magnetic powder can be such that the substance mainly including phosphate is more efficiently precipitated out.
Compared with prior art, the processing method of high concentration organism P wastewater provided by the invention has the advantage that
(1) by the processing of the aerobic MBR series connection membrane bioreactor of anaerobism MBR-, the organic phosphorus overwhelming majority is converted into inorganic
Phosphate enables total phosphorus index stably reaching standard so that the removal rate of phosphorus be made to be greatly improved；
(2) phosphate generated can be used as phosphate fertilizer use after simple process, reach the mesh of the cyclic utilization of waste
, avoid secondary pollution caused by phosphorus containing sludge is emitted into environment；
(3) sludge bulking problem caused by the der Pilz that can effectively inhibit MBR membrane bioreactor common, can make to react
Device long-time steady operation；
(4) reagent used in this method is generally easy to get, easy to operate, the advantage of lower cost of operation, highly beneficial
In actually coming into operation.
Specific embodiment
The following describes the present invention further through the description of specific embodiments, but it is to limit of the invention that this, which is not,
System, those skilled in the art's basic thought according to the present invention can make various modifications or improvements, but without departing from this
The basic thought of invention, is all within the scope of the present invention.
Embodiment 1, a kind of preparation method of nano-magnetic powder
Nano-magnetic powder the preparation method is as follows: weigh mass ratio be 1:5 iron chloride and frerrous chloride, prepare iron chloride with
The mixed aqueous solution of frerrous chloride is heated to 50 DEG C, and the sodium hydrate aqueous solution that concentration is 3mol/L is added dropwise, stirs evenly, adds
Heat stirs 50min, obtains black mixture, washed with deionized water and dehydrated alcohol to 60 DEG C, dry, grinds to get nano magnetic
Powder.
Embodiment 2, a kind of processing method of high concentration organism P wastewater, comprising the following steps:
A, high concentration organism P wastewater is passed through in conditioning tank 1 after fine fack filters, oxalic acid is added into waste water and adjusts
PH to 4；
B, the waste water in conditioning tank is pumped to the aerobic MBR series connection membrane bioreactor of anaerobism MBR-；
C, it will be discharged into conditioning tank 2 by the supernatant of step C processing, adjusts pH to 2, then waste water is discharged into coagulating basin, adds
Enter nano-magnetic powder to be precipitated, sediment contains phosphoric acid molysite, is discharged after filters pressing.
Wherein, the nano-magnetic powder is obtained by embodiment 1；The anaerobism MBR temperature of reactor is 30 DEG C；In water outlet
Circulation, recycle ratio 9；The aerobic MBR reactor uses blast aeration, dissolved oxygen concentration 8.0mg/L；Temperature is 25 DEG C；
The hydraulic detention time of the aerobic MBR series connection membrane bioreactor of anaerobism MBR- is 18h；The every operation 30min of membrane module stops
15min；Liquor natrii hypochloritis is added into the step B anaerobism MBR reactor, concentration is 40mg/L.
Embodiment 3, a kind of processing method of high concentration organism P wastewater, comprising the following steps:
A, high concentration organism P wastewater is passed through in conditioning tank 1 after fine fack filters, oxalic acid is added into waste water and adjusts
PH to 5；
B, the waste water in conditioning tank is pumped to the aerobic MBR series connection membrane bioreactor of anaerobism MBR-；
C, it will be discharged into conditioning tank 2 by the supernatant of step C processing, adjusts pH to 4, then waste water is discharged into coagulating basin, adds
Enter nano-magnetic powder to be precipitated, sediment contains phosphoric acid molysite, is discharged after filters pressing.
Wherein, the nano-magnetic powder is obtained by embodiment 1；The anaerobism MBR temperature of reactor is 30 DEG C；In water outlet
Circulation, recycle ratio 9；The aerobic MBR reactor uses blast aeration, dissolved oxygen concentration 8.0mg/L；Temperature is 25 DEG C；
The hydraulic detention time of the aerobic MBR series connection membrane bioreactor of anaerobism MBR- is 18h；The every operation 30min of membrane module stops
15min；Liquor natrii hypochloritis is added into the step B anaerobism MBR reactor, concentration is 60mg/L.
Embodiment 4, a kind of processing method of high concentration organism P wastewater, comprising the following steps:
A, high concentration organism P wastewater is passed through in conditioning tank 1 after fine fack filters, oxalic acid is added into waste water and adjusts
PH to 6；
B, the waste water in conditioning tank is pumped to the aerobic MBR series connection membrane bioreactor of anaerobism MBR-；
C, it will be discharged into conditioning tank 2 by the supernatant of step C processing, adjusts pH to 7, then waste water is discharged into coagulating basin, adds
Enter nano-magnetic powder to be precipitated, sediment contains phosphoric acid molysite, is discharged after filters pressing.
Wherein, the nano-magnetic powder is obtained by embodiment 1；The anaerobism MBR temperature of reactor is 30 DEG C；In water outlet
Circulation, recycle ratio 9；The aerobic MBR reactor uses blast aeration, dissolved oxygen concentration 8.0mg/L；Temperature is 25 DEG C；
The hydraulic detention time of the aerobic MBR series connection membrane bioreactor of anaerobism MBR- is 18h；The every operation 30min of membrane module stops
15min；Liquor natrii hypochloritis is added into the step B anaerobism MBR reactor, concentration is 100mg/L.
Comparative example 1, a kind of processing method of high concentration organism P wastewater, comprising the following steps:
A, high concentration organism P wastewater is passed through in conditioning tank 1 after fine fack filters, oxalic acid is added into waste water and adjusts
PH to 5；
B, the waste water in conditioning tank is pumped to the aerobic MBR series connection membrane bioreactor of anaerobism MBR-；
C, it will be discharged into conditioning tank 2 by the supernatant of step C processing, adjusts pH to 4, then waste water is discharged into coagulating basin, adds
Enter industrial magnetic powder to be precipitated, sediment contains phosphoric acid molysite, is discharged after filters pressing.
Wherein, the nano-magnetic powder is obtained by embodiment 1；The anaerobism MBR temperature of reactor is 30 DEG C；In water outlet
Circulation, recycle ratio 9；The aerobic MBR reactor uses blast aeration, dissolved oxygen concentration 8.0mg/L；Temperature is 25 DEG C；
The hydraulic detention time of the aerobic MBR series connection membrane bioreactor of anaerobism MBR- is 18h；The every operation 30min of membrane module stops
15min；Liquor natrii hypochloritis is added into the step B anaerobism MBR reactor, concentration is 60mg/L.
Comparative example 2, a kind of processing method of high concentration organism P wastewater, comprising the following steps:
A, high concentration organism P wastewater is passed through in conditioning tank 1 after fine fack filters, oxalic acid is added into waste water and adjusts
PH to 5；
B, the waste water in conditioning tank is pumped to the aerobic MBR series connection membrane bioreactor of anaerobism MBR-；
C, it will be discharged into conditioning tank 2 by the supernatant of step C processing, adjusts pH to 4, then waste water is discharged into coagulating basin, adds
Enter nano-magnetic powder to be precipitated, sediment contains phosphoric acid molysite, is discharged after filters pressing.
Wherein, the nano-magnetic powder is obtained by embodiment 1；The anaerobism MBR temperature of reactor is 30 DEG C；In water outlet
Circulation, recycle ratio 9；The aerobic MBR reactor uses blast aeration, dissolved oxygen concentration 8.0mg/L；Temperature is 25 DEG C；
The hydraulic detention time of the aerobic MBR series connection membrane bioreactor of anaerobism MBR- is 18h；The every operation 30min of membrane module stops
15min。
Test example one, the comparison of total tp removal rate
(1) test material: the processing total phosphorus concentration of method described in embodiment 2-4, comparative example 1-2, which is respectively adopted, is
Organic glyphosate waste water of 150mg/L.
(2) test method: " (water and wastewater recycle analysis method (fourth edition) ", Wang Xinfang etc. writes, China Environmental Science
Publishing house publishes total phosphorus detection method described in (2002).
(3) test result is as shown in table 1:
The total phosphorus removal effect of table 1 embodiment 2-4 and comparative example 1-2 compares
As shown in Table 1, processing method described in 2-4 of the embodiment of the present invention, hence it is evident that better than processing used by comparative example 1-2
Method.The present invention is demonstrated to the treatment effect of high concentration organism P wastewater processing method.
Test example two, sludge volume index (SVI) comparison
(1) test material: the processing total phosphorus concentration of method described in embodiment 2-4, comparative example 1-2, which is respectively adopted, is
Organic glyphosate waste water of 150mg/L.
(2) test method: the suspension for the aerobic MBR for taking about 2 grams of TSS/ of concentration to rise is placed in 1000 millis after evenly mixing
It rises in conical graduate with a scale, after sedimentation in 30 minutes, sharp interface occur in sludge and supernatant.Sludge volume is V (milli
Rise), the accurate mass of sludge is m (gram TSS), then SVI=V/m (ml/g TSS).
(3) test result is as shown in table 2:
The total phosphorus removal effect of table 2 embodiment 2-4 and comparative example 1-2 compares
As shown in Table 2, using processing method described in 2-4 of the embodiment of the present invention, the sludge of MBR reactor can obviously be inhibited
Expansion.
It should be understood by those skilled in the art that the above-described embodiments merely illustrate the principles and effects of the present invention,
And is not intended to limit the present invention.Any person skilled in the art all without departing from the spirit and scope of the present invention, to upper
It states embodiment and carries out modifications and changes.Therefore, such as those of ordinary skill in the art without departing from institute of the present invention
All equivalent modifications or change completed under the spirit and technical idea of announcement, should be contained by claim of the invention
Lid.
Claims (7)
1. a kind of processing method of high concentration organism P wastewater, which is characterized in that method includes the following steps:
A, high concentration organism P wastewater is passed through in conditioning tank 1 after fine fack filters, be added into waste water acid for adjusting pH to 4~
6；
B, the waste water in conditioning tank is pumped to the aerobic MBR series connection membrane bioreactor of anaerobism MBR-；
C, it will be discharged into conditioning tank 2 by the supernatant of step C processing, adjusts pH to 2~7, then waste water is discharged into coagulating basin, is added
Nano-magnetic powder is precipitated, and sediment contains phosphoric acid molysite, is discharged after filters pressing.
2. a kind of processing method of high concentration organism P wastewater as described in claim 1, which is characterized in that in the step A
Acid be hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid or oxalic acid.
3. such as a kind of processing method of high concentration organism P wastewater of claim 1, which is characterized in that the anaerobism MBR reactor
Temperature is 25~35 DEG C, is discharged interior circulation, recycle ratio 9；The aerobic MBR reactor uses blast aeration, dissolved oxygen concentration
For 6.0~9.0mg/L, temperature is 22~28 DEG C.
4. a kind of processing method of high concentration organism P wastewater as described in claim 1, which is characterized in that the anaerobism MBR-
The hydraulic detention time of aerobic MBR series connection membrane bioreactor is 18h；The every operation 30min of membrane module stops 15min.
5. a kind of processing method of high concentration organism P wastewater as described in claim 1, which is characterized in that the step B detests
Liquor natrii hypochloritis is added in oxygen MBR reactor, concentration is 40~100mg/L.
6. a kind of processing method of high concentration organism P wastewater as described in claim 1, which is characterized in that the nano-magnetic powder
The preparation method is as follows: prepare the mixed aqueous solution of iron chloride and frerrous chloride, be heated to 50 DEG C, it is water-soluble that sodium hydroxide be added dropwise
Liquid stirs evenly, and is heated to 60 DEG C, stirs 40-60min, obtains black mixture, washed with deionized water and dehydrated alcohol, does
It is dry, it grinds to get nano-magnetic powder.
7. a kind of processing method of high concentration organism P wastewater as claimed in claim 6, which is characterized in that the iron chloride with
The mass ratio of frerrous chloride is 1:5.
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Cited By (1)
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| CN111233253A (en) * | 2020-01-16 | 2020-06-05 | 深圳市蓝清环境科技工程有限公司 | Enhanced phosphorus removal process for phosphorus-containing wastewater |
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Application publication date: 20191115 |