CN108439522A - A kind of water body dephosphorized technique activating porous composite haydite based on nanometer - Google Patents
A kind of water body dephosphorized technique activating porous composite haydite based on nanometer Download PDFInfo
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- CN108439522A CN108439522A CN201810259728.4A CN201810259728A CN108439522A CN 108439522 A CN108439522 A CN 108439522A CN 201810259728 A CN201810259728 A CN 201810259728A CN 108439522 A CN108439522 A CN 108439522A
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- sewage
- porous composite
- haydite
- composite haydite
- adsorption
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention discloses a kind of sewage adsorption and dephosphorization techniques activating porous composite haydite based on nanometer, belong to water-treatment technology field.In the present invention, by sewage effluents or industrial wastewater pH4~9 and precipitation, filtering after the adjustment, the adsorption tower or adsorbent bed of porous composite haydite are activated by loading nanometer, the trace amounts of phosphorus in water is made to be adsorbed on porous composite haydite；When absorption reaches leakage point, uses dilute sodium hydroxide and sodium chloride mixed liquor as the elution of desorption solution, impregnates porous ceramic grain, porous composite haydite regeneration is realized in the desorption removal of ADSORPTION STATE phosphorus.The present invention removes trace amounts of phosphorus in sewage using the porous composite haydite for loading one or more of nano particles such as nano hydrated ferric oxide, hydrated manganese oxide, hydrous zirconium oxide(HZO) as adsorbent.After present invention process is handled, water outlet content of inorganic phosphorus (in terms of P) can be made to be reduced to 1mg/L hereinafter, meeting or exceeding 1 grade of B standard of national urban wastewater treatment firm pollutant emission from 100mg/L.
Description
Technical field
The invention belongs to water-treatment technology fields, and in particular to a kind of efficiently to go to decontaminate using the porous composite haydite of nanometer activation
The adsorption and dephosphorization and adsorbent reactivation technique of phosphate state Phos in water.
Background technology
Can lead to body eutrophication in the exceeded sewage discharge to natural water of phosphorus, algal bloom, formed wawter bloom and
Red tide phenomenon causes black and odorous water, and a large amount of fishes and shrimps are dead, cause serious financial consequences, lead to serious environmental problems, cause extensively
Social concerns.Sewage dephosphorization has higher requirements to urban wastewater treatment facility, and only three-level process for town sewage treatment could expire
Sufficient dephosphorization demand.Nevertheless, the tertiary treatment process service condition of urban wastewater treatment firm is more demanding, in part high load capacity
Under the conditions of or non-ideal service condition under it cannot be guaranteed that water outlet 1 grade of B of national urban wastewater treatment firm pollutant emission is fully achieved
The above standard (water outlet total phosphorus is less than 1mg/L).In the past few years, China's rapid economic development, quantity of wastewater effluent are significantly increased, many cities
Town sewage plant overload operation, outmoded technique cannot reach new town sewage discharge standard.By (special in sewage treatment plant
Two stage treatment sewage treatment plant) water outlet additional adsorption dephosphorization process be effectively to promote old sewage treatment plant or excess load
The effective ways of sewage disposal plant effluent phosphor-removing effect.In recent years, a variety of dephosphorization adsorbents advanced are received especially in conjunction with modern
The novel absorption material of rice material is rapidly developed.It (preparation of starch conversion nano ferriferrous oxide and its removes for example, paper
The research of phosphorus efficiency, environmental project journal, 2011,05 (10)：2167-2172) report starch conversion ferriferrous oxide nano
Application of the particle in waste water dephosphorization field.Although nano material has excellent absorption property, nano material grain size is small, greatly
It under scale service condition, is easy to run off, effluent color dilution is made to increase.In addition, nano material be easy when being used in wastewater media it is hardened,
Head loss is set to increase, filterability declines.Bulky grain sorbing material is prepared by carrier loaded nano material can reduce receive
Loss and filtration resistance of the rice material in water purification process.For example, paper (research of phosphate adsorption on iron-oxide coated sand,
Water supply and drainage, 2007,33 (11)：It is carrier 150-153) to use quartz sand, loads iron oxide in quartz sand surface, is utilizing oxygen
During changing iron adsorption and dephosphorization, it can reduce iron oxide to avoid filter clogging and be lost in, reduce effluent color dilution.Patent
(CN106268719A) using modified activated carbon as carrier, the ferroferric oxide particle prepared is loaded, has obtained four oxidation of load
The modified activated carbon of three iron granules.It is multiple that patent (CN105688813A) reports a kind of graphene oxide of load ferroso-ferric oxide
Condensation material is used to remove the phosphate in sewage, increases absorption property.Patent (CN101143311) discloses one kind and is based on having
The environmental functional composite material of machine macroreticular resin and nano inorganic functional agent.Patent (CN101343093A) is disclosed to be received by carrying
The method of trace amounts of phosphorus in rice Material cladding ion exchange organic resin deep purifying water body.Although these reports all achieve satisfaction
Phosphor-removing effect, but used carrier material is often expensive, not resistance to oxidation, and non-refractory, service life is short, is lost to ring
Itself can also become environmental contaminants in border.
Porous ceramic grain is to add a small amount of bentonite, montmorillonite, convex-concave stick stone etc. based on the natural porous materials such as diatomite
Clay material is auxiliary bonding agent, the grade inorganic non-metallic porous material obtained through high-temperature calcination.Porous ceramic grain is from the personal value
Lattice are cheap, and fabulous thermal stability and chemical stability, specific surface area and porosity is very high, itself will not bring environmental pollution.
Porous ceramic grain itself can serve as sorbing material, the cationics pollutant such as Adsorption ammonia nitrogen, heavy metal without modification
And some organic pollutants, it has been applied to waste water control, the field of environment engineering such as air purification.(salinity is to manually oozing for paper
The influence of cinder and haydite dephosphorization process, environmental project journal, 2015,9 (10) in filter system：4705-4710) report haydite
The phosphorus removal property in artificial filtration system.But porous ceramic grain activity itself ingredient is few, activity is low, especially to anionic property
Contaminant-removal properties are bad.Load nano active ingredient is the effective ways for improveing haydite absorption property.Patent
(CN104876639A) using concavo-convex rod soil as haydite aggregate, lanthanum carbonate is Phosphate Sorption active constituent, and agricultural crop straw is pore creating material,
It is prepared for porous phosphorus removing haydite by high-temperature burning process.Paper (preparation of magnesia/subway dregs composite haydite and dephosphorization
It can study, using chemical industry, 2015,44 (9):1581-1585) using discarded subway dregs as primary raw material, using magnesia as auxiliary material
It is prepared for dephosphorization haydite.
Although in short, currently, existing exclusive use nano material, alternatively, porous ceramic grain is used for the phase of sewage adsorption and dephosphorization
Report is closed, but does not find and is disclosed using the water body dephosphorized technique for activating porous composite haydite based on nanometer.
Invention content
1. technical problems to be solved
The object of the present invention is to provide a kind of water body dephosphorized techniques activating porous composite haydite based on nanometer, for cities and towns
The secondary effluent of the sewage plant or the water outlet of below standard three-level further enhance sewage dephosphorization ability, reduce water outlet total phosphorus content, make water outlet
Meet or exceed 1 grade of B total phosphorus discharge standard of national town sewage plant.
2. technical solution
The technical solution adopted by the present invention is as follows：
(a) inlet flow-patterm is adjusted to 4-9, filtering or precipitation removal suspended particulate substance；
(b) pretreating sewage obtained by step (a) is activated with certain flow rate by loading nanometer to the suction of porous composite haydite
Attached tower or adsorbent bed, phosphor in sewage acid ion are removed by being adsorbed on porous composite haydite from sewage；
(c) when absorption reaches leakage point (water outlet phosphorus content is more than certain concentration standard), with sodium hydroxide and sodium chloride
Mixed solution impregnate, elute porous composite haydite, phosphate obtains again from porous composite haydite surface desorption, phosphorus removal property
It is raw.
In step (a) content of inorganic phosphorus of phosphorus-containing wastewater in terms of P be less than 100mg/L, water body counter anion it is a concentration of
Within 100 times of inorganic phosphorus concentration；
Porous composite haydite described in step (b) is that nano-sized iron oxide, nano hydrated ferric oxide, nanometer are loaded in duct
The porous composite haydite of one or more of hydrated manganese oxide, nano hydrated zirconium oxide etc., porous composite haydite therein are
With diatomite, volcanic rock, kaolin, bentonite, montmorillonite etc. be raw material prepare grain size 0.1mm-1cm particulate inorganic
Porous material.Operation temperature is 0-100oC, and the discharge of sewage is 5-50 fillers bed volume/hour.
Single column/bed work or the concatenated operation side of multitower/bed can be used in adsorption tower or adsorbent bed described in step (b)
Formula.
NaOH and NaCl solution mass concentration in step (c) are respectively 1-10%, operation temperature 0-100oC, elution
Flow velocity is 0.1-10 bed volumes/hour.
Advantageous effect
The present invention provides the methods that nanometer activates porous composite haydite Adsorption phosphate from sewage state phosphorus, with duct
The porous composite haydite of middle supported active nano material carrys out the phosphate state phosphorus in deep purifying removal sewage for adsorbent.Through this
After the process of invention, water outlet phosphate state phosphorus content can drop to 1mg/L hereinafter, meeting national cities and towns dirt from 100mg/L
Water treatment plant level-one B or more total phosphorus discharge standard.
Specific implementation mode
It further illustrates the present invention by the following examples.
Embodiment 1：
The porous composite haydite (grain size 1-2mm) that 50mL (about 60g) loads 10% nano hydrated ferric oxide is packed into adsorption column
The tertiary treatment of phosphorus-containing wastewater factory is discharged (5mg/L, pH 6.5) by (diameter 3.2cm, long 36cm) at room temperature (about 25 degree),
With the flow velocity of 5 bed volumes/hour by haydite bed, treating capacity 300L, water outlet phosphate state phosphorus content is less than 1mg/L.
When absorption reaches leakage point (phosphorus content is more than 1mg/L), with the NaOH/NaCl mixed solutions of 300mL2% in room
With the flow velocity of 1 bed volume/hour by haydite bed under the conditions of temperature, phosphate desorption rate is more than 95%, be then rinsed with water to
PH is neutral, and haydite phosphorus removal property is regenerated.The almost free of losses of sorbing material own wt, regeneration rate are more than 99%.
The process conditions can proportional amplification operation, be especially suitable for water outlet total phosphorus not exclusively (1~5mg/L of total phosphorus) up to standard
Sewage effluents adsorption and dephosphorization technique.
Claims (6)
1. a kind of sewage adsorption and dephosphorization technique activating porous composite haydite based on nanometer of the present invention, key step packet
It includes：
(a) inlet flow-patterm is adjusted to 4-9, filtering or precipitation removal suspended particulate substance；
(b) pretreating sewage obtained by step (a) is activated with certain flow rate by loading nanometer to the adsorption tower of porous composite haydite
Or adsorbent bed, phosphor in sewage acid ion are removed by being adsorbed on porous composite haydite from sewage；
(c) when absorption reaches leakage point (water outlet phosphorus content be more than certain concentration standard), mixed with sodium hydroxide and sodium chloride
It closes solution to impregnate, elute porous composite haydite, phosphate is regenerated from porous composite haydite surface desorption, phosphorus removal property.
2. the sewage adsorption and dephosphorization technique described in this patent according to claim 1, it is characterised in that phosphorous in step (a)
The content of inorganic phosphorus of sewage is less than 100mg/L in terms of P, within 100 times of a concentration of inorganic phosphorus concentration of water body counter anion；
3. the sewage adsorption and dephosphorization technique described in this patent according to claim 1, it is characterised in that described in step (b)
Porous composite haydite be duct in load nano-sized iron oxide, nano hydrated ferric oxide, nano hydrated manganese oxide, nano hydrated oxygen
Change the porous composite haydite of one or more of zirconium etc., porous composite haydite therein is with diatomite, volcanic rock, kaolinite
Soil, bentonite, montmorillonite etc. are particulate inorganic porous material of the grain size in 0.1mm-1cm of raw material preparation.
4. the sewage adsorption and dephosphorization technique described in this patent according to claim 1, it is characterised in that the operation of step (b)
Temperature is 0-100 DEG C, and the discharge of sewage is 5-50 fillers bed volume/hour.
5. the sewage adsorption and dephosphorization technique according to claim 1-4, feature with the adsorption tower described in step (b)
Or single column/bed work or the concatenated method of operation of multitower/bed can be used in adsorbent bed.
6. the sewage adsorption and dephosphorization technique according to claim 1-4, feature with the NaOH and NaCl in step (c)
Concentration of polymer solution is respectively 1-10%, and operation temperature is 0-100 DEG C, and eluent flow rate is 0.1-10 bed volumes/hour.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810259728.4A CN108439522A (en) | 2018-03-27 | 2018-03-27 | A kind of water body dephosphorized technique activating porous composite haydite based on nanometer |
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| CN201810259728.4A CN108439522A (en) | 2018-03-27 | 2018-03-27 | A kind of water body dephosphorized technique activating porous composite haydite based on nanometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114225898A (en) * | 2021-12-16 | 2022-03-25 | 格丰科技材料有限公司 | Phosphorus removal material, preparation method thereof and application thereof in sewage treatment |
| CN115093049A (en) * | 2022-06-25 | 2022-09-23 | 广西七彩环境科技有限公司 | Method for treating ultra-high phosphorus sewage |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101343093A (en) * | 2008-09-03 | 2009-01-14 | 南京大学 | Method for deeply purifying minim phosphor in water with composite resin |
| CN101935195A (en) * | 2010-09-01 | 2011-01-05 | 郑俊 | Porous phosphorus removing ceramic granules with function of slowly releasing alkali and preparation method thereof |
| CN103769049A (en) * | 2014-01-22 | 2014-05-07 | 西南大学 | Hydrated ferric oxide loaded nano-composite semi-coke and preparation method thereof |
| CN104291797A (en) * | 2014-09-26 | 2015-01-21 | 福州大学 | Bamboo-charcoal-shaped porous ceramsite coated by zero-valent iron as well as preparation method and application of bamboo-charcoal-shaped porous ceramsite |
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2018
- 2018-03-27 CN CN201810259728.4A patent/CN108439522A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101343093A (en) * | 2008-09-03 | 2009-01-14 | 南京大学 | Method for deeply purifying minim phosphor in water with composite resin |
| CN101935195A (en) * | 2010-09-01 | 2011-01-05 | 郑俊 | Porous phosphorus removing ceramic granules with function of slowly releasing alkali and preparation method thereof |
| CN103769049A (en) * | 2014-01-22 | 2014-05-07 | 西南大学 | Hydrated ferric oxide loaded nano-composite semi-coke and preparation method thereof |
| CN104291797A (en) * | 2014-09-26 | 2015-01-21 | 福州大学 | Bamboo-charcoal-shaped porous ceramsite coated by zero-valent iron as well as preparation method and application of bamboo-charcoal-shaped porous ceramsite |
Non-Patent Citations (2)
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| 安旭等: "《城市园林植物后期养护管理学：园林养护单位工作手册》", 31 May 2013, 杭州：浙江大学出版社 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114225898A (en) * | 2021-12-16 | 2022-03-25 | 格丰科技材料有限公司 | Phosphorus removal material, preparation method thereof and application thereof in sewage treatment |
| CN115093049A (en) * | 2022-06-25 | 2022-09-23 | 广西七彩环境科技有限公司 | Method for treating ultra-high phosphorus sewage |
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Application publication date: 20180824 |