CN106076252A - A kind of method utilizing waterworks sludge preparation denitrogenation dephosphorizing adsorbent simultaneously - Google Patents

A kind of method utilizing waterworks sludge preparation denitrogenation dephosphorizing adsorbent simultaneously Download PDF

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Publication number
CN106076252A
CN106076252A CN201610435425.4A CN201610435425A CN106076252A CN 106076252 A CN106076252 A CN 106076252A CN 201610435425 A CN201610435425 A CN 201610435425A CN 106076252 A CN106076252 A CN 106076252A
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aluminum
aluminum mud
mud
method utilizing
denitrogenation dephosphorizing
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CN201610435425.4A
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仇付国
许俊挺
付昆明
孙瑶
王珂
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Beijing University of Civil Engineering and Architecture
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Beijing University of Civil Engineering and Architecture
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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
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • 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
    • B01J20/0248—Compounds of B, Al, Ga, In, Tl
    • 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
    • B01J20/16—Alumino-silicates
    • B01J20/165—Natural alumino-silicates, e.g. zeolites
    • 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
    • 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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
    • 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
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/48—Sorbents characterised by the starting material used for their preparation
    • B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
    • B01J2220/4887—Residues, wastes, e.g. garbage, municipal or industrial sludges, compost, animal manure; fly-ashes

Abstract

The invention discloses a kind of method utilizing waterworks sludge preparation denitrogenation dephosphorizing adsorbent simultaneously, comprise the steps: dehydration aluminum sludge air drying, grind screening, drying, after cooling, be placed in Muffle furnace, by aluminum sludge roasting 4h at 300 DEG C, aluminum mud must be activated；In proportion by Powdered Activated Carbon, activation aluminum mud and zeolite powder mix homogeneously, add the NaOH 100mL that mass concentration is 2% 3%, after the modified 12h of vibration, dry, natural precipitation 2h after taking-up, addition Bentonite is as binding agent pelletize, and is placed in Muffle furnace by the absorbent particles of gained, 400 DEG C of roasting 4h, after cooling, with deionized water rinsing absorbent particles to neutral, after 105 DEG C dry 2h, obtain adsorbent.The present invention utilizes containing activated carbon aluminum mud and the adsorbing material of zeolite preparation simultaneously adsorption of nitrogen phosphorus, had both improved aluminum mud for the adsorption effect of ammonia nitrogen in water body, and had retained its good Phosphate Adsorption performance simultaneously.

Description

A kind of method utilizing waterworks sludge preparation denitrogenation dephosphorizing adsorbent simultaneously
Technical field
The present invention relates to adsorbent preparation field, be specifically related to one and utilize waterworks sludge preparation denitrogenation dephosphorizing absorption simultaneously The method of agent.
Background technology
In order to control body eutrophication, utilize adsorbent remove the nitrogen in water body, phosphorus because of have low cost, efficiency height, Advantage easy and simple to handle etc. and favored.In the last few years, for low cost have inhale phosphorus ability adsorbing material such as flyash, Slag, zeolite etc. have carried out more research.Waterworks sludge (hereinafter referred to as aluminum mud) is to make with the polymer of aluminium salt or aluminum For the by-product produced during the Water purification of main flocculant, have good owing to it contains a large amount of amorphous aluminum Inhaling phosphorus ability, waterworks sludge is abroad inhaled phosphorus and has more already carried out research, research relevant in recent years the most gradually obtains Pay close attention to.Along with the aggravation of the micro-pollution of source water, conventional coagulating sedimentation filtering technique adds the process that activated carbon filter has become conventional Flow process, in the backwashing water of activated carbon pond, activated carbon granule also can enter in Plant Sludge water, therefore removes in water factory's waste sludge Outside the more turbidity material of the calcic that containing the coagulant composition such as aluminium salt, iron salt and precipitates, silicon is outer, possibly together with activity The components such as charcoal.This makes waterworks sludge have more abundant pore structure and bigger specific surface area, and then is more beneficial for inhaling The generation of reaction enclosure, activated carbon be mixed into the absorption property enhancing single aluminum mud, to the phosphorus in water body and some heavy metals Ion has and well adsorbs fixation, but for the ammonia nitrogen absorption less effective in water body.
Summary of the invention
For solving the problems referred to above, the invention provides a kind of side utilizing waterworks sludge preparation denitrogenation dephosphorizing adsorbent simultaneously Method, utilizes containing activated carbon aluminum mud and the adsorbing material of zeolite preparation adsorption of nitrogen phosphorus simultaneously, had both improved aluminum mud in water body The adsorption effect of ammonia nitrogen, retains its good Phosphate Adsorption performance simultaneously.
For achieving the above object, the technical scheme that the present invention takes is:
A kind of method utilizing waterworks sludge preparation denitrogenation dephosphorizing adsorbent simultaneously, comprises the steps:
S1, dehydration aluminum mud is fetched from water treatment plant, natural air drying under indoor environment, ground screening, obtain The aluminum mud (particle diameter is 1-2mm) of Standard mesh number 10-18 mesh；
S2, the aluminum mud of gained is put into baking oven, 105 DEG C of drying, after natural cooling, weigh the former dirt of certain mass Mud, in crucible, is placed in Muffle furnace, by aluminum sludge roasting 4h at 300 DEG C, through natural cooling, must activate aluminum mud；
S3, weigh 2g Powdered Activated Carbon, 8g gained activation aluminum mud and 10g zeolite powder, after mix homogeneously, add quality Concentration is the NaOH 100mL of 2%-3%, at room temperature 25 DEG C after the modified 12h of low speed 120r/min vibration, is placed in baking oven 105 DEG C dry 48h, natural precipitation 2h after taking-up, add 3g Bentonite as binding agent pelletize, screen out the adsorbent of particle diameter 1-2mm Grain；
S4, the absorbent particles of gained is placed in Muffle furnace, 400 DEG C of roasting 4h, after cooling, uses deionized water rinsing Absorbent particles, to neutral, after 105 DEG C dry 2h, obtains adsorbent.
Preferably, described Bentonite is chemical pure CP.
Preferably, described zeolite powder is natural clinoptilolite, and particle diameter is 0.5-1mm.
Preferably, the quality proportioning that Powdered Activated Carbon, aluminum mud, zeolite and binding agent are mixed and modified is 2: 8: 10: 3.
The method have the advantages that
(1) raw material is simple and easy to get, cheap and easy to operate, promotes the resource of water factory's aluminum mud, is natural simultaneously The application of zeolite provides new thinking；
(2) NaOH using mass concentration to be 2% carries out alkali modification to mixture, introduces Na+, remain zeolitic frameworks Structure, it is achieved that the process of " aluminum is for silicon ", improves the adsorbent exchange capacity to cation, here, is embodied in suction Attached dose, to the ability of ammonium radical ion in water, prepares adsorbent specific surface area bigger, had both remained the adsorption and dephosphorization that aluminum mud is good Performance, make use of the ammonia nitrogen absorption performance that zeolite is good simultaneously.
(3) a certain proportion of Bentonite is added as binding agent pelletize so that adsorbent-shaping and to have certain machinery strong Degree, it is simple to prepare adsorbent and be used for artificial swamp or biological gaseous-waste holdup system as filler or substrate.
Accompanying drawing explanation
Fig. 1 is the zeolite proportioning impact on ammonia nitrogen absorption effect in the embodiment of the present invention.
Fig. 2 is the zeolite proportioning impact on Phosphate Adsorption effect in the embodiment of the present invention.
Fig. 3 is the NaOH concentration impact on ammonia nitrogen absorption effect in the embodiment of the present invention.
Fig. 4 is the NaOH concentration impact on Phosphate Adsorption effect in the embodiment of the present invention.
Fig. 5 is the high temperature modified temperature impact on ammonia nitrogen absorption effect in the embodiment of the present invention.
Fig. 6 is the high temperature modified temperature impact on Phosphate Adsorption effect in the embodiment of the present invention.
Detailed description of the invention
In order to make objects and advantages of the present invention clearer, below in conjunction with embodiment, the present invention is carried out further Describe in detail.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit this Bright.
In following example, aluminum mud takes from the large-scale water treatment plant in Beijing, and it processes technique and uses coagulating sedimentation Sand filter and activated carbon filter process technique, and sludge from sedimentation tank water, sand filter and activated carbon filter backwashing water are through pressure filter Filter pressing reuse, its mud cake is aluminum mud.
Using Powdered Activated Carbon and Bentonite to be all from chemical agent company limited of traditional Chinese medicines group, Bentonite is chemical pure CP.Adopt Being natural clinoptilolite with zeolite, the place of production is Henan Province, and particle diameter is 0.5-1mm, and appearance color is pale pink, and concrete performance refers to Mark as shown in table 1 below.
Table 1 zeolite main performance index
Embodiments provide a kind of method utilizing waterworks sludge preparation denitrogenation dephosphorizing adsorbent simultaneously, including such as Lower step:
S1, dehydration aluminum mud is fetched from water treatment plant, natural air drying under indoor environment, ground screening, obtain The aluminum mud (particle diameter is 1-2mm) of Standard mesh number 10-18 mesh；
S2, the aluminum mud of gained is put into baking oven, 105 DEG C of drying, after natural cooling, weigh the former dirt of certain mass Mud, in crucible, is placed in Muffle furnace, by aluminum sludge roasting 4h at 300 DEG C, through natural cooling, must activate aluminum mud；
S3, weigh 2g Powdered Activated Carbon, 8g gained activation aluminum mud and 10g zeolite powder, after mix homogeneously, add quality Concentration is the NaOH 100mL of 2%-3%, at room temperature 25 DEG C after the modified 12h of low speed 120r/min vibration, is placed in baking oven 105 DEG C dry 48h, natural precipitation 2h after taking-up, add 3g Bentonite as binding agent pelletize, screen out the adsorbent of particle diameter 1-2mm Grain；
S4, the absorbent particles of gained is placed in Muffle furnace, 400 DEG C of roasting 4h, after cooling, uses deionized water rinsing Absorbent particles, to neutral, after 105 DEG C dry 2h, obtains adsorbent.
Wherein, two kinds of mixing material selections are containing activated carbon aluminum mud and zeolite, and Bentonite is binding agent, but single addition soap Soil or zeolite or bentonite etc. are likely to realize the present invention as mixing material, and therefore Bentonite, bentonite are mixed and modified i.e. For replacement scheme.Modifying agent select be mass concentration be the NaOH of 2%, but select NaHCO3、Na2CO3It is likely to realize this Bright, therefore NaHCO3、Na2CO3Alkali modification is replacement scheme.
Embodiment
The optimization Test of different method of modifying
(1) mixed and modified (zeolite proportioning) impact on adsorption of nitrogen phosphorus effect
Using raw sewage, zeolite proportioning is zeolite aluminum mud and the zeolite of 30%, 40%, 50%, 60%, 70%, and alkali changes Property and high temperature modified concrete steps such as four (2,3) described, prepared adsorbent carries out nitrogen phosphorus adsorption test, and concrete grammar is for claim respectively Taking each 1g of above-mentioned adsorbent, joining equipped with the initial phosphorus concentration of 200mL is 20mg/L, and initial ammonia nitrogen concentration is 50mg/L water sample In the tool plug conical flask of 250mL.At 120rpm, temperature is that vibrate under the conditions of (25 ± 1) DEG C 120h, every 12h measures absorption residue Ammonia nitrogen and phosphorus concentration, calculate ammonia nitrogen and phosphatic clearance and adsorbance, obtain result such as Fig. 1,2.
(2) the alkali modification NaOH concentration impact on adsorption of nitrogen phosphorus effect
Using raw sewage and zeolite, mixed and modified, alkali modification and high temperature modified concrete steps such as four (2,3) described, alkali changes Property NaOH mass concentration be 15%, 10%, 5%, 2%, 1%, 0.5%, 0.2%, 0.1%, 0.05%, 0.01%, prepare Adsorbent carries out nitrogen phosphorus adsorption test, and concrete grammar, for weigh each 1g of above-mentioned adsorbent respectively, joins equipped with the initial phosphorus of 200mL Concentration is 20mg/L, and initial ammonia nitrogen concentration is in the tool plug conical flask of the 250mL of 50mg/L water sample.At 120rpm, temperature is (25 ± 1) vibrate under the conditions of DEG C 120h, every 12h measures absorption residue ammonia nitrogen and phosphorus concentration, calculate ammonia nitrogen and phosphatic clearance and Adsorbance, obtain result such as Fig. 3,4.
(3) the high temperature modified temperature impact on adsorption of nitrogen phosphorus effect
Use raw sewage and zeolite, mixed and modified, alkali modification and high temperature modified concrete steps such as four (2,3) described, high temperature Modification temperature is 300 DEG C, and 400 DEG C, 500 DEG C, 600 DEG C, 800 DEG C, prepared adsorbent carries out nitrogen phosphorus adsorption test, and concrete grammar is Weighing each 1g of above-mentioned adsorbent respectively, joining equipped with the initial phosphorus concentration of 200mL is 20mg/L, and initial ammonia nitrogen concentration is 50mg/L In the tool plug conical flask of the 250mL of water sample.At 120rpm, temperature is that vibrate under the conditions of (25 ± 1) DEG C 120h, every 12h measures suction Attached residue ammonia nitrogen and phosphorus concentration, calculate ammonia nitrogen and phosphatic clearance and adsorbance, obtain result such as Fig. 5,6.
Therefore, combined selection optimal case is 50% zeolite aluminum mud mixing, adds mass concentration 2%NaOH alkali modification, 400 DEG C of high temperature modified 4h, ammonia nitrogen and phosphatic equilibrium adsorption capacity are respectively 7.81mg/g, 4.01mg/g, and clearance is respectively 73.47%, 98.17%, ammonia nitrogen absorption amount is 9.25 times of raw sewage, Phosphate Adsorption amount is identical with raw sewage.
In sum, utilize the adsorbing material being prepared for adsorption of nitrogen phosphorus simultaneously containing activated carbon aluminum mud and zeolite, both improved Aluminum mud, for the adsorption effect of ammonia nitrogen in water body, retains its good Phosphate Adsorption performance simultaneously.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims (4)

1. the method utilizing waterworks sludge preparation denitrogenation dephosphorizing adsorbent simultaneously, it is characterised in that comprise the steps:
S1, dehydration aluminum mud is fetched from water treatment plant, natural air drying under indoor environment, ground screening, obtain standard The aluminum mud of grit number 10-18 mesh；
S2, the aluminum mud of gained is put into baking oven, 105 DEG C of drying, after natural cooling, weigh the raw sewage of certain mass in In crucible, it is placed in Muffle furnace, by aluminum sludge roasting 4h at 300 DEG C, through natural cooling, aluminum mud must be activated；
S3, weigh 2g Powdered Activated Carbon, 8g gained activation aluminum mud and 10g zeolite powder, after mix homogeneously, add mass concentration For the NaOH 100mL of 2%-3%, at room temperature 25 DEG C after the modified 12h of low speed 120r/min vibration, it is placed in 105 DEG C of bakings in baking oven Dry 48h, natural precipitation 2h after taking-up, addition 3g Bentonite, as binding agent pelletize, screens out the absorbent particles of particle diameter 1-2mm；
S4, the absorbent particles of gained is placed in Muffle furnace, 400 DEG C of roasting 4h, after cooling, adsorbs with deionized water rinsing Agent granule, to neutral, after 105 DEG C dry 2h, obtains adsorbent.
A kind of method utilizing waterworks sludge preparation denitrogenation dephosphorizing adsorbent simultaneously the most according to claim 1, its feature Being, described Bentonite is chemical pure CP.
A kind of method utilizing waterworks sludge preparation denitrogenation dephosphorizing adsorbent simultaneously the most according to claim 1, its feature Being, described zeolite powder is natural clinoptilolite, and particle diameter is 0.5-1mm.
A kind of method utilizing waterworks sludge preparation denitrogenation dephosphorizing adsorbent simultaneously the most according to claim 1, its feature Being, the mixed and modified quality proportioning of Powdered Activated Carbon, aluminum mud, zeolite and binding agent is 2: 8: 10: 3.
CN201610435425.4A 2016-06-15 2016-06-15 A kind of method utilizing waterworks sludge preparation denitrogenation dephosphorizing adsorbent simultaneously Pending CN106076252A (en)

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Cited By (16)

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CN106673112A (en) * 2017-02-03 2017-05-17 北京科泰兴达高新技术有限公司 Nitrogen and phosphorus removal filter material and preparation method thereof
CN106904769A (en) * 2017-04-28 2017-06-30 南京环保产业创新中心有限公司 The method that the integrated absorption and desorption liquid for removing Determination of Total Nitrogen in Waste Water pollutant are applied mechanically
CN107159097A (en) * 2016-11-21 2017-09-15 宝鸡文理学院 Efficiently remove the granule adsorbent and methods for making and using same of Phosphorus From Wastewater
CN107262024A (en) * 2017-06-07 2017-10-20 常州市海若纺织品有限公司 A kind of bed mud lock phosphorus covering material and preparation method thereof
CN108002639A (en) * 2017-11-07 2018-05-08 青岛鑫源环保集团有限公司 Integrated form integration ecological water factory
CN108341496A (en) * 2017-01-23 2018-07-31 天津大学 A kind of biological delaying basin filler for handling soluble organic nitrogen in rainwater
CN108404880A (en) * 2018-05-28 2018-08-17 苏州佑君环境科技有限公司 A kind of preparation method of inorganic dephosphorization adsorbent
CN109647337A (en) * 2019-01-21 2019-04-19 河南永泽环境科技有限公司 A kind of composite adsorbing material of denitrogenation dephosphorizing and preparation method thereof
CN110550691A (en) * 2019-09-30 2019-12-10 长安大学 dual-modified aluminum sludge, and preparation method and application thereof
CN110975806A (en) * 2019-12-09 2020-04-10 万华化学集团股份有限公司 Adsorbent, application of adsorbent in co-oxidation method for co-production of refining dimethyl benzyl alcohol hydrogenolysis raw material and method
CN111167403A (en) * 2020-01-06 2020-05-19 南京大学 Composite functional material for synchronously removing nitrogen and phosphorus and preparation method thereof
CN112619605A (en) * 2020-12-18 2021-04-09 上海灿越化工科技有限公司 Preparation method of potassium iodate modified activated carbon-alumina-based adsorbent
CN112755954A (en) * 2020-12-29 2021-05-07 湖南工业大学 Preparation method and application of nitrogen and phosphorus removal hydroxy aluminum vermiculite sludge particles
CN112844303A (en) * 2021-02-02 2021-05-28 苏州科技大学 Water purification sludge/sodium silicate composite adsorbent, preparation method thereof and application thereof in treating ammonia nitrogen in water body
CN113023819A (en) * 2021-03-16 2021-06-25 水发规划设计有限公司 Composite material covering piece for inhibiting nitrogen and phosphorus release of landscape lake sediment
CN113893820A (en) * 2021-10-14 2022-01-07 广东韩研活性炭科技股份有限公司 Composite adsorption activated carbon material for fish tank and preparation method thereof

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CN107159097B (en) * 2016-11-21 2019-08-13 宝鸡文理学院 The efficiently granule adsorbent and methods for making and using same of removal Phosphorus From Wastewater
CN107159097A (en) * 2016-11-21 2017-09-15 宝鸡文理学院 Efficiently remove the granule adsorbent and methods for making and using same of Phosphorus From Wastewater
CN108341496A (en) * 2017-01-23 2018-07-31 天津大学 A kind of biological delaying basin filler for handling soluble organic nitrogen in rainwater
CN106673112A (en) * 2017-02-03 2017-05-17 北京科泰兴达高新技术有限公司 Nitrogen and phosphorus removal filter material and preparation method thereof
CN106904769A (en) * 2017-04-28 2017-06-30 南京环保产业创新中心有限公司 The method that the integrated absorption and desorption liquid for removing Determination of Total Nitrogen in Waste Water pollutant are applied mechanically
CN106904769B (en) * 2017-04-28 2022-04-12 南京环保产业创新中心有限公司 Method for integrated adsorption and desorption liquid application for removing total nitrogen pollutants in wastewater
CN107262024A (en) * 2017-06-07 2017-10-20 常州市海若纺织品有限公司 A kind of bed mud lock phosphorus covering material and preparation method thereof
CN108002639A (en) * 2017-11-07 2018-05-08 青岛鑫源环保集团有限公司 Integrated form integration ecological water factory
CN108404880A (en) * 2018-05-28 2018-08-17 苏州佑君环境科技有限公司 A kind of preparation method of inorganic dephosphorization adsorbent
CN109647337A (en) * 2019-01-21 2019-04-19 河南永泽环境科技有限公司 A kind of composite adsorbing material of denitrogenation dephosphorizing and preparation method thereof
CN110550691A (en) * 2019-09-30 2019-12-10 长安大学 dual-modified aluminum sludge, and preparation method and application thereof
CN110975806A (en) * 2019-12-09 2020-04-10 万华化学集团股份有限公司 Adsorbent, application of adsorbent in co-oxidation method for co-production of refining dimethyl benzyl alcohol hydrogenolysis raw material and method
CN111167403A (en) * 2020-01-06 2020-05-19 南京大学 Composite functional material for synchronously removing nitrogen and phosphorus and preparation method thereof
WO2021139416A1 (en) * 2020-01-06 2021-07-15 南京大学 Composite functional material for simultaneous denitrification and dephosphorization and preparation method therefor
CN112619605A (en) * 2020-12-18 2021-04-09 上海灿越化工科技有限公司 Preparation method of potassium iodate modified activated carbon-alumina-based adsorbent
CN112755954A (en) * 2020-12-29 2021-05-07 湖南工业大学 Preparation method and application of nitrogen and phosphorus removal hydroxy aluminum vermiculite sludge particles
CN112844303A (en) * 2021-02-02 2021-05-28 苏州科技大学 Water purification sludge/sodium silicate composite adsorbent, preparation method thereof and application thereof in treating ammonia nitrogen in water body
CN113023819A (en) * 2021-03-16 2021-06-25 水发规划设计有限公司 Composite material covering piece for inhibiting nitrogen and phosphorus release of landscape lake sediment
CN113893820A (en) * 2021-10-14 2022-01-07 广东韩研活性炭科技股份有限公司 Composite adsorption activated carbon material for fish tank and preparation method thereof

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