CN106747299A - A kind of waterworks sludge base haydite that activates strengthens its method for inhaling phosphorus effect - Google Patents
A kind of waterworks sludge base haydite that activates strengthens its method for inhaling phosphorus effect Download PDFInfo
- Publication number
- CN106747299A CN106747299A CN201611064123.7A CN201611064123A CN106747299A CN 106747299 A CN106747299 A CN 106747299A CN 201611064123 A CN201611064123 A CN 201611064123A CN 106747299 A CN106747299 A CN 106747299A
- Authority
- CN
- China
- Prior art keywords
- haydite
- strengthens
- waterworks sludge
- sludge
- activates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2068—Other inorganic materials, e.g. ceramics
- B01D39/2072—Other inorganic materials, e.g. ceramics the material being particulate or granular
- B01D39/2075—Other inorganic materials, e.g. ceramics the material being particulate or granular sintered or bonded by inorganic agents
-
- 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
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
-
- 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
- C02F1/28—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
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5016—Acids
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Hydrology & Water Resources (AREA)
- Dispersion Chemistry (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- Analytical Chemistry (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention belongs to water treatment field, and in particular to a kind of activation waterworks sludge base haydite strengthens the method that it inhales phosphorus effect.Specific method is to crush waterworks sludge desiccation to be mixed evenly with clay, and appropriate water granulation is sprayed in nodulizer, and haydite is obtained through high-temperature calcination after drying, and then haydite is soaked in hydrochloric acid and is activated, and activated sludge haydite is obtained after cleaning, drying.Sludge ceramsite phosphorus removal property after the activation that the present invention is obtained is excellent, and the treatment of phosphorus-containing wastewater can be used for as sorbing material.Solve to save the energy consumption that haydite is produced while waterworks sludge treatment handling problems, with good environment and economic benefit.
Description
Technical field
The invention belongs to water treatment field, and in particular to a kind of activation waterworks sludge base haydite strengthens it and inhales phosphorus effect
Method.
Background technology
Phosphorus is the basic nutrition element of biological growth, but phosphorus content ＞ 0.02mg/L can cause body eutrophication, seriously
Destruction aquatic ecosystem.Phosphorus is also the key factor for influenceing China's body eutrophication simultaneously.Phosphorus in removal sewage makes it
Reaching discharge standard turns into the effective means for delaying body eutrophication.Absorption method is used as simple, efficient, the quick dephosphorization of one kind
Technology is received significant attention, and it is critical only that finds efficient and cheap sorbing material.Conventional sorbing material includes work at present
Property aluminum oxide, activated carbon, zeolite, clay mineral and some industrial by-products.Wherein, some discarded objects are developed as adsorption material
Material, realizes the resource of discarded object, meets the theory of recycling economy, is of great immediate significance.
Waterworks sludge is the accessory substance in water treatment process, mainly includes sludge from sedimentation tank water and backwashing water,
Yield is huge, is the 4-7% of inflow.At present, copper water-supply pipe disposal options mainly include landfill, are directly discharged into by Na Shui
Body or city planting ductwork, but these modes have the shortcomings that certain, and landfill disposal is costly；It is directly discharged into by Na Shui
Body, can raise riverbed, influence water ecosystem；And enter city planting ductwork, then can increase the load of sewage treatment plant.Water supply plant
Sludge is used as a kind of safe and harmless discarded object, its iron aluminium for being rich in amorphous state, with huge specific surface area and porous body
Product, can recycle as sorbing material.At present, the phosphorus in water body can have effectively been removed there are some researches show waterworks sludge.
Reclaim waterworks sludge and do suction phosphate material, solve the problems, such as to develop cheap, efficient sorbing material while sludge treatment, it is this
The disposal options for turning waste into wealth, realize recycling sludge, will turn into the development trend of following sludge treatment.
Currently, the research for doing suction phosphate material for exploitation waterworks sludge is concentrated mainly on fires pottery using waterworks sludge
Grain, in then applying to water treatment technology as filtrate or filler.Relevant report, such as Application No. have been done in some researchs
201210243400.6 patent discloses a kind of method for preparing water treatment filter material with copper water-supply pipe and sewage sludge；Application number
Patent for 201511023099.8 discloses a kind of method that waterworks sludge prepares porous type phosphorus-uptake ceramsite.But it is dirty at present
Mud haydite has that waterworks sludge doping is low, the defect of adsorption effect difference.These shortcomings limit waterworks sludge
Widely use, therefore, preparing efficient dephosphorization waterworks sludge haydite will turn into the inexorable trend of following recycling sludge.
The content of the invention
For the problem for overcoming above technology to exist, the present invention is intended to provide a kind of activation waterworks sludge base haydite reinforcing
It inhales the method for phosphorus effect, is mixed evenly with clay by the way that waterworks sludge desiccation is crushed, and sprays appropriate in nodulizer
Water is granulated, and sludge ceramsite is obtained through high-temperature calcination after drying, and then sludge ceramsite is soaked in hydrochloric acid and is activated, after cleaning, drying
Obtain activated sludge haydite.
A kind of waterworks sludge base haydite that activates proposed by the present invention strengthens its method for inhaling phosphorus effect, and specific steps are such as
Under：
(1) by waterworks sludge nature desiccation, crush, sieving makes its particle diameter≤125 μm；
(2) waterworks sludge, clay is well mixed after in nodulizer, the appropriate water of sprinkling granulates balling-up；
(3) it is the raw material ball of 0.8mm~1mm that screening obtains particle diameter, is dried naturally, in 400 DEG C of conditions in immigration Muffle furnace
Lower preheating 20min, then heats to 900 DEG C, is calcined 10min, and furnace cooling obtains sludge ceramsite；
(4) it is 24h in the HCl solution of 0.5mol/L~2mol/L haydite to be soaked in into concentration；
(5) haydite is leached, net, drying to final products is washed with deionized water.
Preferably, copper water-supply pipe described in step (2) and the mass ratio of clay are 2:1.
Preferably, the quality of water described in step (2) is the 15% of material gross mass.
Preferably, the rotating speed of nodulizer is 40rpm in step (2).
Preferably, in step (3), haydite weight (g) is 1 with volume (mL) ratio of HCl solution:10.
Simulation phosphorus-containing wastewater is processed with the waterworks sludge haydite after activation, the concentration of phosphorus after before processing is determined, calculating is gone
Except rate and adsorbance.
Adsorption capacity QtComputing formula with clearance η is shown in (a), (b)
Adsorption capacity Qt=(C0-Ct)V/m (a)
Clearance η=(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.
Beneficial effects of the present invention：
The present invention improves waterworks sludge volume in sludge ceramsite sintering procedure, both solves at waterworks sludge
Reason handling problems, while reducing the cost of pure clay haydite, protect arable land；There is haydite after activation good phosphorus to adsorb
Effect, overcomes its engineer applied defect.
Brief description of the drawings
Fig. 1 is copper water-supply pipe haydite apparent structure figure of the invention.
Fig. 2 is that haydite of the present invention activation is front and rear adsorbs situation map to phosphorus 24h.
Specific embodiment
Embodiment 1：
The method that haydite is prepared with waterworks sludge, comprises the following steps that：
(1) by waterworks sludge nature desiccation, crush, sieving makes its particle diameter≤125 μm；
(2) by waterworks sludge, clay with quality 2:1 is well mixed after in nodulizer, and the rotating speed for setting nodulizer is
40rpm, sprinkling quality is about the water of quality of material 15%, granulates balling-up；
(3) it is the raw material ball of 0.8mm~1mm that screening obtains particle diameter, is dried naturally, in 400 DEG C of conditions in immigration Muffle furnace
Lower preheating 20min, then heats to 900 DEG C, is calcined 10min, and furnace cooling obtains sludge ceramsite.
The cylindrical compress strength of the haydite is 4.3MPa, and specific surface area is 2.7m2/g。
Embodiment 2：
Waterworks sludge prepares the activation method of haydite, comprises the following steps that：
(1) 3 parts of 5g haydites are weighed and is respectively placed in 50mL concentration for 0.5mol/L, in the HCl solution of 1mol/L, 2mol/L,
Immersion 24h；
(2) haydite is leached, is washed with deionized water only, dry the waterworks sludge haydite after being activated.
Embodiment 3：
The determination of the phosphorus absorption property of copper water-supply pipe haydite before and after activation
It is the KH of 50mg/L to prepare initial concentration2PO4Solution simulates phosphorus-containing wastewater, adds the activation prepared in embodiment 1-2
Front and rear copper water-supply pipe haydite, is 1 in solid-to-liquid ratio:Under conditions of 100, with the speed oscillation of 100rpm in shaken cultivation case
100h, haydite phosphor-removing effect is as shown in Figure 2 before and after activation.It can be seen that haydite phosphor-removing effect is significantly improved after activation,
And with the increase of concentration of hydrochloric acid, clearance and adsorbance gradually increase.When concentration of hydrochloric acid is 2mol/L, haydite is to solution
The clearance of middle phosphorus is up to 87%, and adsorbance is 961mg/kg.
The foregoing is only the preferred embodiment of the invention and oneself, be not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (6)
1. a kind of waterworks sludge base haydite that activates strengthens its method for inhaling phosphorus effect, preparation and work comprising copper water-supply pipe haydite
Change, it is characterised in that what the preparation method of the activated sludge haydite was carried out in the steps below：
(1) by waterworks sludge nature desiccation, crush, sieving makes its particle diameter≤125 μm；
(2) waterworks sludge, clay is well mixed after in nodulizer, the appropriate water of sprinkling granulates balling-up；
(3) it is the raw material ball of 0.8mm~1mm that screening obtains particle diameter, is dried naturally, pre- under the conditions of 400 DEG C in immigration Muffle furnace
Hot 20min, then heats to 900 DEG C, is calcined 10min, and furnace cooling obtains sludge ceramsite；
(4) haydite is soaked in 24h in certain density HCl solution；
(5) haydite is leached, net, drying to final products is washed with deionized water.
2. a kind of waterworks sludge base haydite that activates as claimed in claim 1 strengthens its method for inhaling phosphorus effect, and its feature exists
In copper water-supply pipe is 2 with the mass ratio of clay:1.
3. a kind of waterworks sludge base haydite that activates as claimed in claim 1 strengthens its method for inhaling phosphorus effect, and its feature exists
In the quality of water is the 15% of material gross mass.
4. a kind of waterworks sludge base haydite that activates as claimed in claim 1 strengthens its method for inhaling phosphorus effect, and its feature exists
In the rotating speed of nodulizer is 40rpm.
5. a kind of waterworks sludge base haydite that activates as claimed in claim 1 strengthens its method for inhaling phosphorus effect, and its feature exists
In concentration of hydrochloric acid solution is 0.5mol/L-2mol/L.
6. a kind of waterworks sludge base haydite that activates as claimed in claim 1 strengthens its method for inhaling phosphorus effect, and its feature exists
In haydite weight (g) is 1 with volume (mL) ratio of HCl solution:10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611064123.7A CN106747299A (en) | 2016-11-28 | 2016-11-28 | A kind of waterworks sludge base haydite that activates strengthens its method for inhaling phosphorus effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611064123.7A CN106747299A (en) | 2016-11-28 | 2016-11-28 | A kind of waterworks sludge base haydite that activates strengthens its method for inhaling phosphorus effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106747299A true CN106747299A (en) | 2017-05-31 |
Family
ID=58904604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611064123.7A Pending CN106747299A (en) | 2016-11-28 | 2016-11-28 | A kind of waterworks sludge base haydite that activates strengthens its method for inhaling phosphorus effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106747299A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108311095A (en) * | 2018-03-16 | 2018-07-24 | 锡林郭勒职业学院 | A kind of preparation method and applications of flyash defluorinating agent |
| CN108786717A (en) * | 2018-06-12 | 2018-11-13 | 河南师范大学 | A kind of preparation method of modified copper water-supply pipe particle and its application in going water removal on phosphate |
| CN109621907A (en) * | 2018-12-24 | 2019-04-16 | 北京建筑大学 | A kind of mud granule and the preparation method and application thereof for removing removing heavy metals |
| CN110240216A (en) * | 2019-05-08 | 2019-09-17 | 安徽建筑大学 | A kind of novel ecological environment protection sewage treatment process |
| CN110563086A (en) * | 2019-09-19 | 2019-12-13 | 上海城市水资源开发利用国家工程中心有限公司 | Ecological detention pool using reinforced phosphorus removal particles as filler and implementation 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 |
| CN116351393A (en) * | 2023-03-13 | 2023-06-30 | 东南大学 | Preparation method and application of modified sludge adsorbent |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644565A (en) * | 2004-12-14 | 2005-07-27 | 南开大学 | Method for producing light ceramic particles from mud in water supply plant and sewage treating plant |
| CN102515830A (en) * | 2012-01-05 | 2012-06-27 | 武汉科技大学 | Reproducible phosphorus-uptake ceramsite and preparation method thereof |
| CN105418145A (en) * | 2015-12-29 | 2016-03-23 | 山东大学 | Method of preparing porous phosphor absorbing ceramic particle from sludge in water supply plant |
-
2016
- 2016-11-28 CN CN201611064123.7A patent/CN106747299A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1644565A (en) * | 2004-12-14 | 2005-07-27 | 南开大学 | Method for producing light ceramic particles from mud in water supply plant and sewage treating plant |
| CN102515830A (en) * | 2012-01-05 | 2012-06-27 | 武汉科技大学 | Reproducible phosphorus-uptake ceramsite and preparation method thereof |
| CN105418145A (en) * | 2015-12-29 | 2016-03-23 | 山东大学 | Method of preparing porous phosphor absorbing ceramic particle from sludge in water supply plant |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108311095A (en) * | 2018-03-16 | 2018-07-24 | 锡林郭勒职业学院 | A kind of preparation method and applications of flyash defluorinating agent |
| CN108786717A (en) * | 2018-06-12 | 2018-11-13 | 河南师范大学 | A kind of preparation method of modified copper water-supply pipe particle and its application in going water removal on phosphate |
| CN109621907A (en) * | 2018-12-24 | 2019-04-16 | 北京建筑大学 | A kind of mud granule and the preparation method and application thereof for removing removing heavy metals |
| CN110240216A (en) * | 2019-05-08 | 2019-09-17 | 安徽建筑大学 | A kind of novel ecological environment protection sewage treatment process |
| CN110563086A (en) * | 2019-09-19 | 2019-12-13 | 上海城市水资源开发利用国家工程中心有限公司 | Ecological detention pool using reinforced phosphorus removal particles as filler and implementation 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 |
| CN116351393A (en) * | 2023-03-13 | 2023-06-30 | 东南大学 | Preparation method and application of modified sludge adsorbent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106747299A (en) | A kind of waterworks sludge base haydite that activates strengthens its method for inhaling phosphorus effect | |
| CN108786738A (en) | A kind of magnesium salts modification biological charcoal and its application | |
| CN101007261B (en) | Zeolite adsorbent and its preparation method | |
| CN105131960B (en) | A kind of preparation method and application of lead-contaminated soil repair materials | |
| CN107115843A (en) | A kind of preparation method and applications for coming from peanut shell modified activated carbon | |
| CN108315016A (en) | A kind of porous magnetic humic acid/charcoal particle and preparation method thereof for heavy metal reparation | |
| CN104084126B (en) | The preparation method of biomass-based iron aluminium complex spherical charcoal | |
| CN110078070A (en) | A kind of preparation method of the oily sludge base absorption carbon material for oily waste water treatment | |
| CN106423051A (en) | Preparation method and application of magnetic activated hydrothermal biochar microspheres | |
| WO2021212672A1 (en) | Special pig manure charcoal modified by amino grafting, preparation method, and use thereof in farmland water-removing and nitrogen recycling | |
| CN102886247A (en) | Method for preparing adsorbent by virtue of red mud in alumina industry and sludge in sewage treatment | |
| CN104876639A (en) | Porous phosphorus removal ceramisites and preparation method thereof | |
| CN107244887B (en) | Preparation method and application method of water-based drilling cutting adsorption filter material | |
| CN106540650A (en) | A kind of preparation method of waterworks sludge base dephosphorization granule adsorbent | |
| CN106607006A (en) | Preparation method for adsorbent capable of removing nitrogen and phosphorus simultaneously | |
| CN106943999A (en) | A kind of graphene modified attapulgite earth adsorbing and preparation method | |
| CN106518150B (en) | A kind of composite haydite of clean water sludge and diatomite preparation | |
| CN109233859A (en) | A kind of porous sustained-release composite passivant and the preparation method and application thereof for heavy metal-polluted soil passivation | |
| CN107262024A (en) | A kind of bed mud lock phosphorus covering material and preparation method thereof | |
| CN114180553A (en) | Method for preparing nitrogen-doped porous carbon by taking waste crop roots as raw materials and application | |
| CN105664874A (en) | Biochar adsorbing agent for removing nitrate nitrogen in solution and preparing method thereof | |
| CN107963628A (en) | The preparation of walnut shell activated carbon and its method for eluent in adsorption recovery phenanthrene-polluted soil leacheate | |
| CN104888686B (en) | A kind of particle red mud base adsorbent preparation method for Phosphate Adsorption | |
| CN104591331A (en) | Method for removing ammonia nitrogen in electroplating wastewater | |
| CN112844309B (en) | Multi-effect biochar-based composite material and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |
|
| RJ01 | Rejection of invention patent application after publication |