CN109553255A - A kind of composite material and preparation method of efficient control sedimentary phosphate release - Google Patents

A kind of composite material and preparation method of efficient control sedimentary phosphate release Download PDF

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Publication number
CN109553255A
CN109553255A CN201811389671.6A CN201811389671A CN109553255A CN 109553255 A CN109553255 A CN 109553255A CN 201811389671 A CN201811389671 A CN 201811389671A CN 109553255 A CN109553255 A CN 109553255A
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CN
China
Prior art keywords
water
quality
composite material
preparation
phosphate release
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Pending
Application number
CN201811389671.6A
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Chinese (zh)
Inventor
柴晓利
陆斌
张�杰
李会娜
刘书敏
陈宇
周瑜
吕成旭
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Shanghai Poseidon Environmental Technology Co Ltd
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Shanghai Poseidon Environmental Technology Co Ltd
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Priority to CN201811389671.6A priority Critical patent/CN109553255A/en
Publication of CN109553255A publication Critical patent/CN109553255A/en
Pending legal-status Critical Current

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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
    • C02F11/00—Treatment of sludge; Devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
    • B01J20/027—Compounds of F, Cl, Br, I
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
    • B01J20/043—Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
    • B01J20/045—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium containing sulfur, e.g. sulfates, thiosulfates, gypsum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
    • B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
    • 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

Abstract

The invention discloses a kind of composite material and preparation methods of efficiently control sedimentary phosphate release, belong to sludge handling technical field.The preparation method step are as follows: group is become into 58% (quality) CaSO4, 2% (quality) AlCl3, 20% (quality) CaCO3, 20% (quality) quartz sand mixture uniformly mixed with foaming agent, water, stand, it is dry after coagulation forming；Wherein, the mass ratio of mixture and water is 1: 0.8~1.2, and foaming agent is 0.1% to the mass fraction of water.Preparation method of the present invention is easy to operate, has the double effects chemically and physically adsorbed using composite material made from this method, can efficiently control sedimentary phosphate release, and water body pH will not be caused excessively high.

Description

A kind of composite material and preparation method of efficient control sedimentary phosphate release
Technical field
The present invention relates to a kind of composite material and preparation methods of efficiently control sedimentary phosphate release, belong to sludge handling skill Art field.
Background technique
With the fast development of Chinese society economy, the growth of population and the quickening of urbanization process, the generation of sewage Amount increasingly increases, and the wastewater treatment rate in China is relatively low, and a large amount of unprocessed sewage up to standard is caused to be directly entered China Water body causes the serious pollution of water body.Currently, many water bodys in China have had already appeared serious eutrophic state.Phosphorus It is to cause one of critical nutrients element of water eutrophication, and bed mud is the important home to return to and accumulation library into water systems'phosphorus.When When environmental condition changes, the phosphorus in bed mud may be released, again polluted-water.Therefore, effectively in control bed mud The release of phosphorus is very important the eutrophication control of China's water body.
Being effectively treated for contaminated sediments is an important ring in river water body recovery project, makes a general survey of pollution bottom both domestic and external Mud processing technique, is broadly divided into two major classes: strange land processing technique and in-situ treatment technology.Polluted bed mud strange land processing technique is main Refer to that bed mud is dredged and completes and dredge the processing disposition for completing bed mud.Sediment pollution processing technique in situ, is primarily referred to as by adding medicament pair Bed mud is covered, is aoxidized, is passivated, and then is reduced from the amount of pollutant being discharged into water body in bed mud.With strange land processing technique Compare, in-situ treatment technology have required cost it is low, can pollution to avoid sediments re-suspension during Sediment Dredging to water body And secondary pollution problem in Dredged bed mud transmission process and treatment process, the advantages that additional processing disposition place is not needed. Therefore, polluted bed mud in-situ treatment technology has broad application prospects.
Aluminium salt, molysite and calcium salt class medicament are the common medicaments in sediment pollution processing technique in situ, to a certain degree On the phosphorus in bed mud can be discharged and play inhibiting effect, but using single aluminium salt, molysite and calcium salt class medicament as in situ When effective component in sediment pollution processing technique handles contaminated sediments, the inhibition of the phosphorus discharged in bed mud is gone Except effect is not very ideal, in addition, the pharmaceutical quantities added are often more, being significantly increased and influencing water for river water pH can be caused Body ORP and other water quality indicators.Therefore, the composite material for researching and developing a kind of efficiently control sedimentary phosphate release seems very intentionally Justice.
Summary of the invention
For the problems of the prior art, the present invention provides the composite material and its system of a kind of efficiently control sedimentary phosphate release Preparation Method, the preparation method is easy to operate, has the dual function chemically and physically adsorbed using composite material made from this method Effect can efficiently control sedimentary phosphate release, and water body pH will not be caused excessively high.
To realize the above technical purpose, the technical scheme is that
A kind of preparation method of the composite material of efficient control sedimentary phosphate release, specific steps are as follows:
Group is become into 58% (quality) CaSO4, 2% (quality) AlCl3, 20% (quality) CaCO3, 20% (quality) quartz The mixture of sand is uniformly mixed with foaming agent, water, is stood, dry after coagulation forming；The mass ratio of the mixture and water is 1: 0.8~1.2, the foaming agent is 0.1% to the mass fraction of water.
Preferably, the partial size of the quartz sand is 1mm.
Preferably, the foaming agent is lauryl sodium sulfate.
A kind of composite material discharged using sedimentary phosphate is efficiently controlled made from above-mentioned preparation method.
The present invention is beneficial to be had the technical effect that
The method of the present invention is easy to operate, using the Ca released in composite material made from this method2+、Al3+Meeting and bed mud The phosphorus reaction released generates indissoluble salt, reduces diffusion flux of the phosphorus in bed mud to overlying water, to effectively control bed mud The release of phosphorus；The foaming agent being added in composite material can make its air-setting molding when be formed in the interior thereof it is numerous not The aperture of rule, the presence of aperture not only can be such that the phosphorus of sediment release is adsorbed in hole by the effect of physical absorption, and And also can increase the contact area of the phosphorus of composite material and sediment release into water, cooperate Ca2+、Al3+Chemical reaction with phosphorus can To greatly improve the phosphor-removing effect of composite material, thus efficiently control sedimentary phosphate release；
In addition, the calcium sulfate being added in composite material of the present invention can not only provide necessary inhibition sedimentary phosphate release Ca2+, can be coated with other raw material and form solid-state, to slow down Ca2+、Al3+Rate of release, extend composite material Effective acting time, anti-water-stop body pH is excessively high and prevents from introducing the wind that a large amount of chemical element increases water pollution in water body Danger；The quartz sand being added in composite material can also increase the intensity of material, so that composite material in practical applications will not be very It is fast broken and loosely fall.
Detailed description of the invention
Fig. 1 is the photo of composite A；
Fig. 2 is the SEM figure (5000 times of amplification) of composite A；
Fig. 3 is the SEM figure (20000 times of amplification) of composite A；
Specific embodiment
Below by examples of implementation, the characteristics of the present invention is further explained, but claim of the invention is not done any It limits.
Embodiment 1:
Group is become into 58% (quality) CaSO4, 2% (quality) AlCl3, 20% (quality) CaCO3, 20% (quality) partial size The mixture of the quartz sand of 1mm is uniformly mixed with lauryl sodium sulfate, water, wherein the mass ratio of mixture and water is 1: 0.8 ~1.2, foaming agent is 0.1% to the mass fraction of water, is stood, dry after abundant coagulation forming, obtains control sedimentary phosphate release Composite A.
The surface topography of A is as shown in Figure 1 to Figure 3.It is seen from figure 1 that hole is distributed in composite A surface；From Fig. 2 and See in Fig. 3, composite A surface in fine and close reticular structure, and fine and close reticular structure be by countless as branch What crystal mutually intersected to form, these crystal make materials A during intersecting there is numerous irregular small on microcosmic Hole, aperture is in 100-300nm.
Comparative example 1:
The composition of mixture in embodiment 1 is changed to 67% (quality) CaSO4, 3% (quality) AlCl3, 20% (quality) CaCO3, 10% (quality) partial size 1mm quartz sand, other conditions are identical, are prepared referring to method same as Example 1 Control the composite material B of sedimentary phosphate release.
Comparative example 2:
Mixture composition in embodiment 1 is changed to 65% (quality) CaSO4, 5% (quality) AlCl3, 10% (quality) CaCO3, 20% (quality) partial size 1mm quartz sand, other conditions are identical, are prepared referring to method same as Example 1 Control the composite material D of sedimentary phosphate release.
The measurement of sedimentary phosphate release inhibitory effect is carried out to each composite A obtained above, B, D, experimental method is as follows:
(1) it after choosing the sundries (stone, plastics, branch and other impurities) in black-odor riverway bed mud, weighs respectively 300g black-odor riverway bed mud is put into the glass beaker of 4 1L；Each beaker is respectively designated as A, B, D, R；
(2) composite A, each 20g of B, D are weighed respectively, are crushed to after partial size is 0.5-1cm and are separately added into step (1) in corresponding beaker A, B, D；Any reagent is not added in beaker R as blank group；
(3) 700mL tap water is slowly added into 4 beakers, stands.
The transparency change of water in the cup is burnt in observation, the results showed that, after standing 2h, in the beaker that adds A material, water body has gone out Phenomenon is now significantly clarified, water body is still in cloudy state in B, D, R beaker；Continue after standing 15h, adds A, B, D material beaker In water all in clear state, and water body is still in cloudy state in R beaker；
Dissolubility total phosphorus (TP) content and the water sample in beaker in overlying water water determination water sample are taken in 0h, 2h and 27h PH, as a result as shown in Table 1 and Table 2；
The variation (μ g/L) of 1 overlying water TP of table
The variation of 2 overlying water pH of table
Table 1 the result shows that, make although two kinds of composite materials of B, D all have certain inhibition to the release of phosphine in bed mud With, but it inhibits removal effect to be far smaller than composite A the release of phosphine in bed mud；Table 2 the result shows that, although with quiet The extension of time is set, the trend risen occurs in water body pH, but water body pH is still below 9, in the range of can bear.
In conclusion composite A can fast lifting water transparency, having to TP release has preferably inhibitory effect, And the influence to water body pH is little.
The measurement of dephosphorization ability is carried out to composite A, experimental method is as follows:
The orthophosphate solution for preparing 4 initial concentrations (being respectively labeled as A-1, A-2, A-3, A-4), then according to positive phosphorus The ratio that the volume of acid salt solution and the mass ratio of composite material are 500: 1 adds 1g material in 500ml orthophosphate solution A, record add after materials A TP concentration in orthophosphate solution and change with time situation, and the results are shown in Table 3；
By table 3, it can be seen that, materials A all has extraordinary TP removal effect to the water body with different initial TP concentration Fruit, TP concentration when with reaction time 637h carry out the accounting of materials A dephosphorization ability, and the results are shown in Table 4.
It is understood that being merely to illustrate the present invention above with respect to specific descriptions of the invention and being not limited to this Technical solution described in inventive embodiments.Those skilled in the art should understand that still can be carried out to the present invention Modification or equivalent replacement, to reach identical technical effect；As long as meet use needs, all protection scope of the present invention it It is interior.

Claims (4)

1. a kind of preparation method of the composite material of efficiently control sedimentary phosphate release, which is characterized in that specific steps are as follows: will form For 58% (quality) CaSO4, 2% (quality) AlCl3, 20% (quality) CaCO3, 20% (quality) quartz sand mixture and hair Infusion, water uniformly mix, and stand, dry after coagulation forming；The mass ratio of the mixture and water is 1: 0.8~1.2, the hair Infusion is 0.1% to the mass fraction of water.
2. the preparation method of composite material as described in claim 1, which is characterized in that the partial size of the quartz sand is 1mm.
3. the preparation method of composite material as described in claim 1, which is characterized in that the foaming agent is dodecyl sulphate Sodium.
4. the composite material of sedimentary phosphate release is efficiently controlled made from any preparation method according to claim 1~3.
CN201811389671.6A 2018-11-21 2018-11-21 A kind of composite material and preparation method of efficient control sedimentary phosphate release Pending CN109553255A (en)

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Application Number Priority Date Filing Date Title
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100702065B1 (en) * 2006-03-28 2007-04-02 주식회사한국지씨엠 Water treatment particle for simultaneously removal of suspend solid, nitrate and phosphate
CN102557221A (en) * 2012-02-15 2012-07-11 中国科学院地球化学研究所 Preparation method and application of eutrophic water body sediment phosphor in-situ passivating agent
CN107081122A (en) * 2017-06-15 2017-08-22 兰州交通大学 The method that dephosphorization agent is prepared using copper water-supply pipe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100702065B1 (en) * 2006-03-28 2007-04-02 주식회사한국지씨엠 Water treatment particle for simultaneously removal of suspend solid, nitrate and phosphate
CN102557221A (en) * 2012-02-15 2012-07-11 中国科学院地球化学研究所 Preparation method and application of eutrophic water body sediment phosphor in-situ passivating agent
CN107081122A (en) * 2017-06-15 2017-08-22 兰州交通大学 The method that dephosphorization agent is prepared using copper water-supply pipe

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
信文书等: "一种新型复合材料对河道底泥磷释放抑制研究", 《生态建材》 *
李向东: "《环境污染与修复》", 31 January 2016, 中国矿业大学出版社 *

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Application publication date: 20190402

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