CN106540650A - A kind of preparation method of waterworks sludge base dephosphorization granule adsorbent - Google Patents
A kind of preparation method of waterworks sludge base dephosphorization granule adsorbent Download PDFInfo
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- CN106540650A CN106540650A CN201610914902.5A CN201610914902A CN106540650A CN 106540650 A CN106540650 A CN 106540650A CN 201610914902 A CN201610914902 A CN 201610914902A CN 106540650 A CN106540650 A CN 106540650A
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- water
- waterworks sludge
- particle
- waterworks
- supply pipe
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- 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
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- 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
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28016—Particle form
- B01J20/28019—Spherical, ellipsoidal or cylindrical
-
- 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
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- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention belongs to water treatment field, and in particular to a kind of preparation method of waterworks sludge base dephosphorization granule adsorbent.Concrete grammar is will to be mixed evenly with sodium alginate soln after waterworks sludge mummification, broken, screening, and bead is formed in being added dropwise to calcium chloride solution, and solidification forms waterworks sludge particle after being dried.Particle is used for into treatment of Phosphorus Containing Waste Water, the phosphorus in waste water can be effectively removed, adsorbance is up to 44mg/g.The present invention is obtained copper water-supply pipe particle of good performance while copper water-supply pipe adsorption capacity is kept.The resource of waste is realized, with good economy and environmental benefit.
Description
Technical field
The invention belongs to water treatment field, and in particular to a kind of preparation side of waterworks sludge base dephosphorization granule adsorbent
Method.
Background technology
In recent years, body eutrophication is on the rise, and there is the lake of more than half in China in eutrophic state, wherein
Some Lakes reach serious rice-nutrient state.Phosphorus in integrated wastewater discharge standard (GB8978-1996) regulation sewage effluent
Content will be less than 0.3mg/L, and the phosphorus effectively removed in water body becomes current problem demanding prompt solution.At present, conventional dephosphorization side
Method includes chemical method, bioanalysis and absorption method.Chemical method efficiency high, but adding for chemical agent is likely to result in secondary pollution,
And cost of investment is significantly increased.Bioanalysis low cost, but water quality impact is easily received, fluctuation of service, water outlet do not reach discharge mark
It is accurate.Absorption method phosphor-removing effect is stable, has been widely used in wastewater treatment, the choosing that it is critical only that sorbing material of absorption method
Select, conventional sorbing material includes activated alumina, activated carbon, zeolite, clay mineral and some industrial by-products.Based on following
The theory of ring economic development, develops some discarded objects as sorbing material, solves to realize while offal treatment handling problems
The process of sewage, for the unification for realizing environmental benefit and economic benefit is significant.
Waterworks sludge as the accessory substance during Water purification, mainly by iron-aluminium oxide (hydroxide) and raw water
Present in silt composition.While running water is produced, substantial amounts of sludge can be produced.At present, waterworks sludge is still taken as useless
Gurry carries out landfill.Iron and aluminium in waterworks sludge is mainly present with unformed form, with larger micro pore volume
And specific surface area, sorbing material can be done.And reclaim waterworks sludge also increasingly to be paid attention to as dephosphorization adsorbent, such as Shen
Number a kind of method that utilization waterworks sludge removes phosphorus in town sewage please be disclosed for 201310205397.3 patent；Application
Number a kind of method that dephosphorization adsorbent is prepared as raw material with clean water sludge is disclosed for 201210017066.2 patent；Application number
Patent for CN201310022578.2 discloses a kind of preparation method of activation water supply plant waste sludge dephosphorization adsorbent；Application number
Patent for CN201110313868.3 discloses a kind of spherical haydite matrix for constructed wetland and preparation method thereof.At present, feed water
Factory's sludge as dephosphorization adsorbent, the sludge of powder, is recycled difficult generally using in the form of powder or haydite；And make pottery
Grain sludge have impact on the adsorption effect of waterworks sludge as a large amount of auxiliary materials are doped with during granulation, to a certain extent.
These shortcomings all limit widely using for waterworks sludge, therefore, preparing efficient dephosphorization waterworks sludge particle will become not
Carry out the inexorable trend that sludge is utilized.
The content of the invention
For the problem for overcoming above technology to exist, the present invention is intended to provide a kind of waterworks sludge base dephosphorization granular absorption
The preparation method of agent, by being mixed evenly waterworks sludge mummification broken with sodium alginate soln, is added dropwise to calcium chloride solution
Middle formation bead, realizes granular sludge after solidification drying.
A kind of preparation method of waterworks sludge base dephosphorization granule adsorbent proposed by the present invention, comprises the following steps that：
(1) by waterworks sludge nature mummification, crush, sieve so as to particle diameter≤125 μm；
(2) certain density sodium alginate and calcium chloride solution are respectively configured；
(3) waterworks sludge is added in sodium alginate soln, is well mixed；
(4) mixed liquor in step (3) is dropwise added dropwise in step (2) calcium chloride solution using dropper, obtains feedwater dirty
Mud gelled pill, stands solidification a period of time under uniform temperature；
(5) the copper water-supply pipe gel ball being cured is leached, deionized water is cleaned, and drying is to copper water-supply pipe
Grain.
Preferably, the concentration of sodium alginate described in step (2) is 0.5-2%, and the concentration of calcium chloride solution is 4-5%.
Preferably, sludge quality in step (3)：Sodium alginate soln quality=1:10.
Preferably, in step (4), hardening time is 8h, and solidification temperature is 25 DEG C.
Preferably, in step (5), drying condition is：85 DEG C, 24h.
Phosphorus-containing wastewater is simulated with obtained copper water-supply pipe particle disposal, the concentration of phosphorus after before processing is determined, clearance is calculated
And adsorbance.
Adsorption capacity Qt(a), (b) are seen with the computing formula of clearance η
Adsorption capacity Qt=(C0-Ct)V/m (a)
Clearance η=100* (C0-Ct)/C0 (b)
In formula：QtThe adsorption capacity of-t, mg/g；
η-clearance (%)
C0, CtThe concentration of-phosphorus initial concentration and t, mg/L；
V-liquor capacity, L；
The quality of m-adsorbent, g.
The advantage for obtaining of the invention and beneficial effect are：
(1) raw material waterworks sludge wide material sources of the invention, preparation method are simple, economical quick；
(2) copper water-supply pipe is disposed for its process and provides new approach, realized as the raw material for preparing dephosphorization adsorbent
Changing waste into resources, improves its engineering application value；
(3) present invention prepare dephosphorization adsorbent, to phosphorus have very strong adsorption capacity, with preferable clearance and compared with
High adsorption capacity.
Description of the drawings
Fig. 1 waterworks sludges, sodium alginate, calcium chloride concentration are respectively 10%, 0.5%, when 4%, copper water-supply pipe particle
To variable concentrations simulation treatment of Phosphorus Containing Waste Water effect over time.
Fig. 2 waterworks sludges, sodium alginate, calcium chloride concentration are respectively 10%, 1%, when 4%, copper water-supply pipe particle pair
Variable concentrations simulation treatment of Phosphorus Containing Waste Water effect is over time.
Fig. 3 waterworks sludges, sodium alginate, calcium chloride concentration are respectively 10%, 2%, when 5%, copper water-supply pipe particle pair
Variable concentrations simulation treatment of Phosphorus Containing Waste Water effect is over time.
Specific embodiment
Embodiment 1：
Dephosphorization adsorption particle is prepared with copper water-supply pipe, is comprised the steps：
(1) by waterworks sludge nature mummification, crush, sieve so as to particle diameter≤125 μm；
(2) 0.5% sodium alginate soln 100mL and 4% calcium chloride solution 250mL is prepared respectively；
(3) 10g waterworks sludges are added in 0.5% sodium alginate soln, are well mixed；
(4) mixed liquor in step (3) is dropwise added dropwise in step (2) calcium chloride solution using dropper, obtains feedwater dirty
Mud gelled pill, stands solidification 8h under the conditions of 25 DEG C；
(5) the copper water-supply pipe gel ball being cured is leached, deionized water is rinsed repeatedly, in 85 DEG C, dries 24h, obtain
Copper water-supply pipe particle.Embodiment 2：
Dephosphorization adsorption particle is prepared with copper water-supply pipe, is comprised the steps：
(1) by waterworks sludge nature mummification, crush, sieve so as to particle diameter≤125 μm；
(2) 1% sodium alginate soln 100mL and 4% calcium chloride solution 250mL is prepared respectively；
(3) 10g waterworks sludges are added in 1% sodium alginate soln, are well mixed；
(4) mixed liquor in step (3) is dropwise added dropwise in step (2) calcium chloride solution using dropper, obtains feedwater dirty
Mud gelled pill, stands solidification 8h under the conditions of 25 DEG C；
(5) the copper water-supply pipe gel ball being cured is leached, deionized water is rinsed repeatedly, in 85 DEG C, dries 24h, obtain
Copper water-supply pipe particle.Embodiment 3：
Dephosphorization adsorption particle is prepared with copper water-supply pipe, is comprised the steps：
(1) by waterworks sludge nature mummification, crush, sieve so as to particle diameter≤125 μm；
(2) 2% sodium alginate soln 100mL and 5% calcium chloride solution 250mL is prepared respectively；
(3) 10g waterworks sludges are added in 2% sodium alginate soln, are well mixed；
(4) mixed liquor in step (3) is dropwise added dropwise in step (2) calcium chloride solution using dropper, obtains feedwater dirty
Mud gelled pill, stands solidification 8h under the conditions of 25 DEG C；
(5) the copper water-supply pipe gel ball being cured is leached, deionized water is rinsed repeatedly, in 85 DEG C, dries 24h, obtain
Copper water-supply pipe particle.Embodiment 4：
The evaluation of the dephosphorization absorption property of copper water-supply pipe particle
Prepare KH of the initial concentration for 100mg/L, 500mg/L, 1000mg/L, 5000mg/L2PO4Solution simulation is phosphorous useless
Water, the copper water-supply pipe particle prepared in adding embodiment 1-3 is 1 in solid-to-liquid ratio:Under conditions of 50, stirred with the rotating speed of 100rpm
72h is mixed, three kinds of copper water-supply pipe particle phosphor-removing effects are distinguished as shown in Figure 1, 2, 3 with the change of adsorption time.In 72h, three
Kind of copper water-supply pipe particle to concentration for 100mg/L, 500mg/L, 1000mg/L KH2PO4In solution, the clearance of phosphorus is up to 90%
More than, the KH to 5000mg/L2PO4In solution, the clearance of phosphorus is 69%-78%；It is 44mg/g to the maximum adsorption capacity of phosphorus.
The foregoing is only the preferred embodiment of the invention and oneself, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (7)
1. a kind of preparation method of waterworks sludge base dephosphorization granule adsorbent, it is characterised in that concrete grammar is by water supply plant
It is mixed evenly with sodium alginate soln after sludge drying, broken, screening, in being added dropwise to calcium chloride solution, forms bead, solidification is dried
Copper water-supply pipe particle is formed after dry.
2. the method for claim 1, it is characterised in that waterworks sludge particle diameter≤125 μm after screening.
3. the method for claim 1, it is characterised in that the concentration of sodium alginate is 0.5-2%.
4. the method for claim 1, it is characterised in that the concentration of calcium chloride is 4%-5%.
5. the method for claim 1, it is characterised in that waterworks sludge is well mixed with sodium alginate, wherein dirty
Mud concentration is 10%.
6. the method for claim 1, it is characterised in that hardening time is 8h, and temperature is 25 DEG C.
7. the method for claim 1, it is characterised in that drying condition is 85 DEG C, 24h.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109231792A (en) * | 2018-10-26 | 2019-01-18 | 南京工业大学 | A kind of sludge dehydrating agent and its preparation method and application |
| CN111377497A (en) * | 2020-03-17 | 2020-07-07 | 郑州大学 | Sodium alginate-embedded novel iron-carbon-medical stone efficient phosphorus removal particle and preparation method thereof |
| CN112142444A (en) * | 2020-08-24 | 2020-12-29 | 辽宁大学 | Plate-type ceramsite prepared from dewatered sludge, and preparation method and application thereof |
| CN115400744A (en) * | 2022-09-16 | 2022-11-29 | 上海大学 | Method for preparing phosphorus adsorbent from sludge ash |
| CN115432829A (en) * | 2022-08-31 | 2022-12-06 | 江西盖亚环保科技有限公司 | Biological filler, preparation method and application thereof in sewage treatment |
| CN115636623A (en) * | 2022-10-10 | 2023-01-24 | 湖南鑫远环境科技股份有限公司 | Baking-free ceramsite and preparation method and application thereof |
| CN116786094A (en) * | 2023-07-26 | 2023-09-22 | 山东省煤田地质规划勘察研究院 | Sewage plant tail water advanced nitrogen and phosphorus removal filler based on water supply plant sludge, preparation method and sewage plant tail water advanced treatment system |
| CN116832765A (en) * | 2023-07-18 | 2023-10-03 | 水利部交通运输部国家能源局南京水利科学研究院 | Fine-particle sediment dephosphorization adsorbent and preparation method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109231792A (en) * | 2018-10-26 | 2019-01-18 | 南京工业大学 | A kind of sludge dehydrating agent and its preparation method and application |
| CN111377497A (en) * | 2020-03-17 | 2020-07-07 | 郑州大学 | Sodium alginate-embedded novel iron-carbon-medical stone efficient phosphorus removal particle and preparation method thereof |
| CN111377497B (en) * | 2020-03-17 | 2022-04-19 | 郑州大学 | Sodium alginate-embedded iron carbon-medical stone efficient phosphorus removal particle and preparation method thereof |
| CN112142444A (en) * | 2020-08-24 | 2020-12-29 | 辽宁大学 | Plate-type ceramsite prepared from dewatered sludge, and preparation method and application thereof |
| CN115432829A (en) * | 2022-08-31 | 2022-12-06 | 江西盖亚环保科技有限公司 | Biological filler, preparation method and application thereof in sewage treatment |
| CN115400744A (en) * | 2022-09-16 | 2022-11-29 | 上海大学 | Method for preparing phosphorus adsorbent from sludge ash |
| CN115636623A (en) * | 2022-10-10 | 2023-01-24 | 湖南鑫远环境科技股份有限公司 | Baking-free ceramsite and preparation method and application thereof |
| CN115636623B (en) * | 2022-10-10 | 2024-04-26 | 湖南鑫远环境科技股份有限公司 | Baking-free ceramsite and preparation method and application thereof |
| CN116832765A (en) * | 2023-07-18 | 2023-10-03 | 水利部交通运输部国家能源局南京水利科学研究院 | Fine-particle sediment dephosphorization adsorbent and preparation method thereof |
| CN116832765B (en) * | 2023-07-18 | 2023-12-01 | 水利部交通运输部国家能源局南京水利科学研究院 | Fine-particle sediment dephosphorization adsorbent and preparation method thereof |
| CN116786094A (en) * | 2023-07-26 | 2023-09-22 | 山东省煤田地质规划勘察研究院 | Sewage plant tail water advanced nitrogen and phosphorus removal filler based on water supply plant sludge, preparation method and sewage plant tail water advanced treatment system |
| CN116786094B (en) * | 2023-07-26 | 2023-12-29 | 山东省煤田地质规划勘察研究院 | Sewage plant tail water advanced nitrogen and phosphorus removal filler based on water supply plant sludge, preparation method and sewage plant tail water advanced treatment system |
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