CN103252216A - Adsorbent, preparation process thereof and application of adsorbent to purification of ammonia-nitrogen wastewater with medium-low concentration - Google Patents
Adsorbent, preparation process thereof and application of adsorbent to purification of ammonia-nitrogen wastewater with medium-low concentration Download PDFInfo
- Publication number
- CN103252216A CN103252216A CN2013102140721A CN201310214072A CN103252216A CN 103252216 A CN103252216 A CN 103252216A CN 2013102140721 A CN2013102140721 A CN 2013102140721A CN 201310214072 A CN201310214072 A CN 201310214072A CN 103252216 A CN103252216 A CN 103252216A
- Authority
- CN
- China
- Prior art keywords
- wood chip
- adsorbent
- ammonia
- waste water
- concentration
- 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.)
- Granted
Links
Images
Abstract
The invention relates to a technology for purifying and treating ammonia-nitrogen wastewater by using an adsorption method and particularly relates to an adsorbent, a preparation process thereof and an application of the adsorbent to the purification of ammonia-nitrogen wastewater with medium-low concentration. An iron-plated woodchip adsorbent provided by the invention is composed of woodchips and Fe(OH)3. The preparation process comprises the following steps of: washing woodchips by using water for 1-3 times to remove impurities, drying, crushing and screening to ensure that the mass percentage of the woodchips with the particle sizes of 198-350mum is larger than or equal to 80%; subjecting a FeCl3 solution with the concentration of 0.15-0.25mol/L and a NaOH solution to reaction to generate a Fe(OH)3 suspension liquid; and then, sufficiently mixing the screened woodchips and the Fe(OH)3 suspension liquid according to the solid-to-liquid ratio of 0.6-1.0g/10mL, carrying out hydrothermal treatment at the temperature of 30-50 DEG C for 1.5-3h, washing a product by using water until the product is neutral, carrying out suction filtration, and drying the product. When the adsorbent is used for purifying the ammonia-nitrogen wastewater with medium-low concentration, the removal rate of NH4<+>-N is larger than or equal to 90%, and the removal rate of COD (Dissolved Organic Carbon) is larger than or equal to 75%.
Description
Technical field
The present invention relates to adsorption method for purifying and handle the technology of ammonia nitrogen waste water, especially a kind of adsorbent and preparation technology thereof also are applied to low-concentration ammonia-nitrogen waste water in the purification.
Background technology
Along with improving constantly of expanding economy and living standards of the people, the pollution that the ammonia nitrogen waste water that wide material sources and discharge capacity rise year by year causes has caused global concern.Except industries such as oil, chemical industry, chemical fertilizer, iron and steel, food, pharmacy produced a large amount of waste water, the use of nitrogenous fertilizer also can produce ammonia and nitrogen pollution in the decomposition of itrogenous organic substance in the sanitary sewage, animal drainage, percolate and the agricultural production process.After ammonia nitrogen entered water body, the most significant was exactly the eutrophication that causes water body, made algae and planktonic rapidly a large amount of breedings, and dissolved oxygen descends, the water quality severe exacerbation, and large number of biological death causes water body black smelly.2010, China was useless, total amount of sewage discharge reaches 617.3 hundred million tons, and wherein discharged volume of industrial waste water is 237.5 hundred million tons, and the ammonia nitrogen discharge capacity reaches 120.3 ten thousand tons in the waste water.This shows that ammonia and nitrogen pollution has become one of serious pollution problem of China, remove focus and difficult point that ammonia nitrogen in the waste water has become current environmental pollution improvement.
According to the difference of ammonia nitrogen concentration in the waste water, waste water can be divided into 3 classes: high-concentration ammonia nitrogenous wastewater (NH
4 +-N〉500 mg/L), intermediate concentration ammonia nitrogen waste water (NH
4 +-N is 50-500 mg/L), low-concentration ammonia-nitrogen waste water (NH
4 +-N＜50 mg/L).At present, the treatment technology of high-concentration ammonia nitrogenous wastewater is ripe relatively, but the research for middle low-concentration ammonia-nitrogen wastewater processing technology is less, mainly contain biological denitrificaion method, break point chlorination, ion-exchange, soil irrigation method etc., these methods exist operating cost height, complex treatment process mostly, cause shortcomings such as secondary pollution.
Absorption method is simple to operation because of it, the good favor that always is subjected to people of removal effect.The tradition absorption method adopts adsorbents such as active carbon, NACF more, and treatment effect is good, but service life is short, the operating cost height, and the regeneration cost height of adsorbent causes its application to be restricted.Therefore, the low concentration ammonia nitrogen material has become the research focus of absorption method in exploitation cheapness, the absorption efficiently.
Summary of the invention
The objective of the invention is to overcome above-mentioned defective, a kind of adsorbent and preparation technology thereof are provided and are applied to low-concentration ammonia-nitrogen waste water in the purification.
Technical scheme of the present invention: a kind of plating iron wood chip adsorbent, by wood chip, Fe (OH)
3Form wood chip mass percent Wei ≧ 99% wherein, Fe (OH)
3Mass percent Wei ≦ 1%.
A kind of plating iron wood chip adsorbent, the wood pellet particle diameter accounts for mass percent Wei ≧ 80% at 198 ~ 350 μ m.
A kind of plating iron wood chip adsorbent preparation technology may further comprise the steps: to remove silt, mechanical admixture, oven dry is pulverized, and sieves, and makes the wood pellet particle diameter account for quality Bai Fen Shuo ≧ 80% at 198 ~ 350 μ m through 1-3 washings in wood chip elder generation; Be the FeCl of 0.15 ~ 0.25 mol/L afterwards with concentration
3Solution and NaOH solution reaction generate Fe (OH)
3Suspension; Wood chip and Fe (OH) again will sieve
3Suspension fully mixes with the ratio of solid-to-liquid ratio 0.6 ~ 1.0 g/10 mL, and at 30 ~ 50 ℃ of following hydrothermal treatment consists 1.5 ~ 3 h of temperature, product is through being washed to neutrality, suction filtration, oven dry.
A kind of plating iron wood chip adsorbent preparation technology, optimum process condition is: the wood pellet particle diameter accounts for quality Bai Fen Shuo ≧ 85% at 198 ~ 350 μ m, is the FeCl of 0.15 mol/L with concentration
3Solution and NaOH solution reaction generate Fe (OH)
3Suspension is again with wood chip and Fe (OH)
3Suspension fully mixes with the ratio of solid-to-liquid ratio 1.0 g/10 mL, and at 40 ℃ of following hydrothermal treatment consists 2 h of temperature, product is through being washed to neutrality, suction filtration, oven dry.
Low-concentration ammonia-nitrogen method for waste water in a kind of purification, may further comprise the steps: regulating ammonia nitrogen waste water pH is 9 ~ 11, plating iron wood chip adsorbent consumption 3 ~ 5 g/L, 25 ~ 35 ℃ of reaction temperatures, behind ammonia nitrogen waste water and plating iron wood chip adsorbent hybrid reaction times 20 ~ 50 min, filter.
Low-concentration ammonia-nitrogen method for waste water in a kind of purification, the optimal parameter condition is: regulating ammonia nitrogen waste water pH is 9, and plating iron wood chip adsorbent consumption is 3 g/L, and reaction temperature is controlled at 30 ℃, behind ammonia nitrogen waste water and plating iron wood chip adsorbent hybrid reaction times 30 min, filter.
The present invention adopts the Hydrothermal Preparation adsorbent, and hydro-thermal method is a kind of new technology, and the adsorbent of this method preparation has fabulous performance: even particle distribution, the reunion degree is light, can use more cheap raw material, has saved high-temp combustion and ball milling etc.
The present invention adopts wood chip as the base material of adsorbent, be based on cellulose, poly-pentose are arranged in this body structure of wood chip, and acidic materials such as tannin, also have some aldehyde, ketone, alcohol, ester, wherein contain a large amount of hydroxyls, carboxyl, part free hydroxyl group, free amino acid and free wooden phenol, these functional groups can both the cationic material of absorbed portion and organic matter; And Fe (OH)
3Suspension has certain flocculation function.Therefore its sinking speed is fast, NH
4 +-N removal Shuai ≧ 90%, COD removal Shuai ≧ 75%, and the water outlet after the purified treatment can be satisfied " integrated wastewater discharge standard " standard-required (GB8978-1996).
The present invention is different from active carbon absorption technology, not only inexpensive, be easy to get, and the characteristics with absorption and ion-exchange coexistence, its outstanding advantage be the plating iron wood chip as a kind of biological adsorption agent, can be used as fertilizer after the absorption of centering low-concentration ammonia-nitrogen waste water is saturated and be applied to orchard and garden.
Below each technological parameter is determined to elaborate:
One, investigated the influence of hydro-thermal synthesis temperature to the ammonia nitrogen absorption effect, the adsorption test condition is: FeCl
3Solution concentration=0.15 mol/L, solid-to-liquid ratio=1.0 g/10 mL, ammonia nitrogen waste water pH=9, reaction time=30 min, reaction temperature=28 ℃, the adsorbent consumption is 3 g/L.The hydro-thermal synthesis temperature is seen Fig. 1 to the influence of ammonia nitrogen absorption effect.
Fig. 1 shows that along with the rising of hydro-thermal synthesis temperature, the ammonia nitrogen removal effect is more good.But too high synthesis temperature causes cost also higher.
Two, investigated modifier FeCl
3Concentration is to the influence of ammonia nitrogen absorption effect, and the adsorption test condition is: synthetic 2 h of 40 ℃ of following hydro-thermals, and solid-to-liquid ratio=1.0 g/10 mL, ammonia nitrogen waste water pH=9, reaction time=30 min, reaction temperature=31 ℃, the adsorbent consumption is 3 g/L.Modifier FeCl
3Concentration is seen Fig. 2 to the influence of ammonia nitrogen absorption effect.
As shown in Figure 2, with Fe (OH)
3Suspension is compared, and the plating iron wood chip is higher to ammonia-N removal rate.Along with Fe (OH)
3The increase of suspension concentration, ammonia-N removal rate also increase to some extent; Ammonia nitrogen removal frank also increases along with the increase of modifier iron concentration in the plating iron wood chip.In addition, detect to find behind the absorption ammonia nitrogen Fe in the solution
3+Therefore concentration has a little increase, infers that the plating iron wood chip is removed in the process of ammonia nitrogen may have cation exchange.
Three, wood chip and Fe (OH) have been investigated
3The ratio of suspension (solid-to-liquid ratio) is to the influence of ammonia nitrogen absorption effect, and the adsorption test condition is: 40 ℃ of synthetic 2 h of following hydro-thermal, FeCl
3Solution concentration=0.15 mol/L, ammonia nitrogen waste water pH=9, reaction time=30 min, reaction temperature=33 ℃, the adsorbent consumption is 3 g/L.Solid-to-liquid ratio is seen Fig. 3 to the influence of ammonia nitrogen absorption effect.
As can be seen from Figure 3, in the scope of 0.6 ~ 1.0 g/10 mL, along with wood chip and Fe (OH)
3The raising of suspension ratio, ammonia nitrogen removal frank slowly descends; But in the scope of 1.0 ~ 1.6 g/10 mL, ammonia nitrogen removal frank reduces fast.
Four, investigated the influence of pH value of solution to the ammonia nitrogen absorption effect, the adsorption test condition is: 40 ℃ of synthetic 2 h of following hydro-thermal, FeCl
3Solution concentration=0.15 mol/L, solid-to-liquid ratio=1.0 g/10 mL, reaction time=30 min, reaction temperature=32 ℃, the adsorbent consumption is 3 g/L.The pH value of solution value is seen Fig. 4 to the influence of ammonia nitrogen absorption effect.
Consider that higher pH can cause the effusion of ammonia, therefore, the scope of setting pH value of solution is 4 to 11.As shown in Figure 4, when pH changed in 4 ~ 11 scopes, the variation of deduction pH value of solution caused the minimizing with the ammonium nitrogen amount, and former wood chip is up to 44% to the clean eliminating rate of absorption of ammonia nitrogen, and the plating iron wood chip is up to 77% to the clean eliminating rate of absorption of ammonia nitrogen.Ammonia-N removal rate increases with the increase of pH value of solution in the solution, and this is because when solution was acidity, the iron oxide layer of plating iron wood chip adsorbent surface in the acid water environment hydroxylating took place and is electropositive; And when solution was alkalescence, adsorbent surface was then electronegative, with the ion state ammonium generation electrostatic attraction effect of positive charge.
Five, investigated the influence of reaction time to the ammonia nitrogen absorption effect, the adsorption test condition is: 40 ℃ of synthetic 2 h of following hydro-thermal, FeCl
3Solution concentration=0.15 mol/L, solid-to-liquid ratio=1.0 g/10 mL, ammonia nitrogen waste water pH=9, reaction temperature=32 ℃, the adsorbent consumption is 3 g/L.Reaction time is seen Fig. 5 to the influence of ammonia nitrogen absorption effect.
Fig. 5 shows that whole adsorption process is carried out very rapidly in 20 min, just reach the adsorption equilibrium state behind 30 min substantially.
Six, investigated the influence of adsorbent consumption to the ammonia nitrogen absorption effect, the adsorption test condition is: 40 ℃ of synthetic 2 h of following hydro-thermal, FeCl
3Solution concentration=0.15 mol/L, solid-to-liquid ratio=1.0 g/10 mL, ammonia nitrogen waste water pH=9, reaction time=30 min, reaction temperature=34 ℃.The adsorbent consumption is seen Fig. 6 to the influence of ammonia nitrogen absorption effect.
As seen from Figure 6, along with the increase of adsorbent consumption, ammonia-N removal rate also presents rising situation, and that is because the increase of adsorption site makes the ammonia-N removal rate increase very fast; And the increase of adsorbent consumption also shows the Fe of adsorbent surface
3+Quantity increases, so the possibility of its displacement ammonium ion improves.But arrive after 3 g/L, its ascendant trend is not obvious.
Description of drawings
Fig. 1 is the influence of hydro-thermal synthesis temperature among the present invention to the ammonia nitrogen absorption effect.
Fig. 2 is the influence of modifier iron concentration among the present invention to the ammonia nitrogen absorption effect.
Fig. 3 is the influence of solid-to-liquid ratio among the present invention to the ammonia nitrogen absorption effect.
Fig. 4 is the influence of pH value of solution among the present invention to the ammonia nitrogen absorption effect.
Fig. 5 is the influence of reaction time among the present invention to the ammonia nitrogen absorption effect.
Fig. 6 is the influence of adsorbent consumption among the present invention to the ammonia nitrogen absorption effect.
The specific embodiment
The middle low-concentration ammonia-nitrogen waste water of indication of the present invention refers to the waste water of ammonia nitrogen concentration in 50 ~ 150 mg/L scopes.
Embodiment one:
The wood chip mass percent is 99.7%, Fe (OH)
3Mass percent is 0.3%.
Preparation plating iron wood chip: wood pellet particle diameter 198 ~ 350 μ m mass percents account for 81%, and concentration is the FeCl of 0.15 mol/L
3The Fe (OH) that solution and NaOH solution reaction generate
3Suspension is again with wood chip and Fe (OH)
3After suspension fully mixed with the ratio of solid-to-liquid ratio 1.0 g/10 mL, at 40 ℃ of following hydrothermal treatment consists 2 h of temperature, product was through being washed to neutrality, and suction filtration is dried, and obtains plating iron wood chip adsorbent.
Plating iron wood chip adsorbent purified treatment ammonia nitrogen waste water: initial NH in the waste water
4 +-N, COD concentration are respectively 102 mg/L and 355 mg/L, and reaction temperature is controlled at 25 ℃, regulate wastewater pH 9, and plating iron wood chip adsorbent consumption 3 g/L measure ammonia nitrogen concentration 10 mg/L in the filtrate, COD 83 mg/L, NH after reacting 30 min
4 +-N clearance reaches 90.2%.
Embodiment two:
The wood chip mass percent is 99.4%, Fe (OH)
3Mass percent is 0.6%.
Preparation plating iron wood chip: wood pellet particle diameter 198 ~ 350 μ m mass percents account for 85%, and concentration is the FeCl of 0.20 mol/L
3The Fe (OH) that solution and NaOH solution reaction generate
3Suspension is again with wood chip and Fe (OH)
3After suspension fully mixed with the ratio of solid-to-liquid ratio 0.8 g/10 mL, at 30 ℃ of following hydrothermal treatment consists 3 h of temperature, product was through being washed to neutrality, and suction filtration is dried, and obtains plating iron wood chip adsorbent.
Plating iron wood chip adsorbent purified treatment ammonia nitrogen waste water: initial NH in the waste water
4 +-N, Zn
2+Concentration is respectively 94 mg/L and 4.5 mg/L, and reaction temperature is controlled at 35 ℃, regulates wastewater pH 10, and adsorbent consumption 3.5 g/L measure ammonia nitrogen concentration 9 mg/L in the filtrate, Zn after reacting 40 min
2+1.2 mg/L, NH
4 +-N clearance reaches 90.4%.
Embodiment three:
The wood chip mass percent is 99.4%, Fe (OH)
3Mass percent is 0.6%.
Preparation plating iron wood chip: wood pellet particle diameter 198 ~ 350 μ m mass percents account for 85%, and concentration is the FeCl of 0.20 mol/L
3The Fe (OH) that solution and NaOH solution reaction generate
3Suspension is again with wood chip and Fe (OH)
3After suspension fully mixed with the ratio of solid-to-liquid ratio 0.8 g/10 mL, at 50 ℃ of following hydrothermal treatment consists 1.5 h of temperature, product was through being washed to neutrality, and suction filtration is dried, and obtains plating iron wood chip adsorbent.
Plating iron wood chip adsorbent purified treatment ammonia nitrogen waste water: initial NH in the waste water
4 +-N, AsO
4 3-Concentration is respectively 147 mg/L and 0.9 mg/L, and reaction temperature is controlled at 28 ℃, regulates wastewater pH 9, and adsorbent consumption 4.8 g/L measure ammonia nitrogen concentration 13 mg/L in the filtrate, AsO after reacting 30 min
4 3-0.3 mg/L, NH
4 +-N clearance reaches 91.2%.
Embodiment four:
The wood chip mass percent is 99.0%, Fe (OH)
3Mass percent is 1.0%.
Preparation plating iron wood chip: wood pellet particle diameter 198 ~ 350 μ m mass percents account for 83%, and concentration is the FeCl of 0.25 mol/L
3The Fe (OH) that solution and NaOH solution reaction generate
3Suspension is again with wood chip and Fe (OH)
3After suspension fully mixed with the ratio of solid-to-liquid ratio 0.6 g/10 mL, at 45 ℃ of following hydrothermal treatment consists 2 h of temperature, product was through being washed to neutrality, and suction filtration is dried, and obtains plating iron wood chip adsorbent.
Plating iron wood chip adsorbent purified treatment ammonia nitrogen waste water: initial NH in the waste water
4 +-N, COD, AsO
4 3-Concentration is respectively 55 mg/L, 253 mg/L and 0.7 mg/L, and reaction temperature is controlled at 32 ℃, regulates wastewater pH 11, and adsorbent consumption 4 g/L measure ammonia nitrogen concentration 5 mg/L in the filtrate, COD 69 mg/L, AsO after reacting 50 min
4 3-0.3 mg/L, NH
4 +-N clearance reaches 90.9%.
Claims (6)
1. a plating iron wood chip adsorbent is characterized in that: by wood chip, Fe (OH)
3Form wood chip mass percent Wei ≧ 99% wherein, Fe (OH)
3Mass percent Wei ≦ 1%.
2. a kind of plating iron wood chip adsorbent according to claim 1, it is characterized in that: the wood pellet particle diameter accounts for mass percent Wei ≧ 80% at 198 ~ 350 μ m.
3. plating iron wood chip adsorbent preparation technology is characterized in that: may further comprise the steps: wood chip earlier through 1-3 washings to remove silt, mechanical admixture, oven dry is pulverized, and sieves, and makes the wood pellet particle diameter account for hundred fens number ≧ 80% of quality at 198 ~ 350 μ m; Be the FeCl of 0.15 ~ 0.25 mol/L afterwards with concentration
3Solution and NaOH solution reaction generate Fe (OH)
3Suspension; Wood chip and Fe (OH) again will sieve
3Suspension fully mixes with the ratio of solid-to-liquid ratio 0.6 ~ 1.0 g/10 mL, and at 30 ~ 50 ℃ of following hydrothermal treatment consists 1.5 ~ 3 h of temperature, product is through being washed to neutrality, suction filtration, oven dry.
4. a kind of plating iron wood chip adsorbent preparation technology according to claim 3, it is characterized in that: optimum process condition is: the wood pellet particle diameter accounts for quality Bai Fen Shuo ≧ 85% at 198 ~ 350 μ m, is the FeCl of 0.15 mol/L with concentration
3Solution and NaOH solution reaction generate Fe (OH)
3Suspension is again with wood chip and Fe (OH)
3Suspension fully mixes with the ratio of solid-to-liquid ratio 1.0 g/10 mL, and at 40 ℃ of following hydrothermal treatment consists 2 h of temperature, product is through being washed to neutrality, suction filtration, oven dry.
5. low-concentration ammonia-nitrogen method for waste water in the purification, it is characterized in that: may further comprise the steps: regulating ammonia nitrogen waste water pH is 9 ~ 11, plating iron wood chip adsorbent consumption 3 ~ 5 g/L, 25 ~ 35 ℃ of reaction temperatures, behind ammonia nitrogen waste water and plating iron wood chip adsorbent hybrid reaction times 20 ~ 50 min, filter.
6. low-concentration ammonia-nitrogen method for waste water in a kind of purification according to claim 5, it is characterized in that: the optimal parameter condition is: regulating ammonia nitrogen waste water pH is 9, plating iron wood chip adsorbent consumption is 3 g/L, reaction temperature control is at 30 ℃, behind ammonia nitrogen waste water and plating iron wood chip adsorbent hybrid reaction times 30 min, filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310214072.1A CN103252216B (en) | 2013-06-03 | 2013-06-03 | Adsorbent, preparation process thereof and application of adsorbent to purification of ammonia-nitrogen wastewater with medium-low concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310214072.1A CN103252216B (en) | 2013-06-03 | 2013-06-03 | Adsorbent, preparation process thereof and application of adsorbent to purification of ammonia-nitrogen wastewater with medium-low concentration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103252216A true CN103252216A (en) | 2013-08-21 |
| CN103252216B CN103252216B (en) | 2014-12-24 |
Family
ID=48956627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310214072.1A Expired - Fee Related CN103252216B (en) | 2013-06-03 | 2013-06-03 | Adsorbent, preparation process thereof and application of adsorbent to purification of ammonia-nitrogen wastewater with medium-low concentration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103252216B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104138748A (en) * | 2014-08-07 | 2014-11-12 | 黄山学院 | Compound biosorbent capable of greatly improving capability of adsorbing heavy metal by waste biomasses and preparation method thereof |
| CN104573273A (en) * | 2015-01-27 | 2015-04-29 | 江西理工大学 | Building method of modified bioadsorbent structure-activity relationship model and application thereof |
| CN106146758A (en) * | 2016-07-08 | 2016-11-23 | 中国地质大学（武汉） | A kind of ultraviolet light causes the method that sawdust surface grafting functional polymer prepares cation adsorbing material |
| CN108212086A (en) * | 2018-01-19 | 2018-06-29 | 北京师范大学 | For the modified activated carbon absorbent and its preparation process of Adsorption ammonia nitrogen |
| CN109364926A (en) * | 2018-12-14 | 2019-02-22 | 国网山东省电力公司电力科学研究院 | The preparation method of catalyst for desulfurization wastewater class Fenton's reaction removal ammonia nitrogen |
| CN113003770A (en) * | 2021-03-04 | 2021-06-22 | 江西理工大学 | Method for stably, circularly and efficiently treating salt-containing ammonia nitrogen wastewater by using ligand exchange adsorbent |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913676A (en) * | 2010-08-04 | 2010-12-15 | 南京信息工程大学 | Method for removing phosphorus in water by utilizing ferric salt-modified eggshells |
| CN101913675A (en) * | 2010-08-04 | 2010-12-15 | 南京信息工程大学 | Method for removing phosphorus in water by modifying waste egg shell |
| CN102583703A (en) * | 2012-01-18 | 2012-07-18 | 湘潭大学 | Magnetic microorganism carrier prepared from biomass waste and application thereof |
-
2013
- 2013-06-03 CN CN201310214072.1A patent/CN103252216B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913676A (en) * | 2010-08-04 | 2010-12-15 | 南京信息工程大学 | Method for removing phosphorus in water by utilizing ferric salt-modified eggshells |
| CN101913675A (en) * | 2010-08-04 | 2010-12-15 | 南京信息工程大学 | Method for removing phosphorus in water by modifying waste egg shell |
| CN102583703A (en) * | 2012-01-18 | 2012-07-18 | 湘潭大学 | Magnetic microorganism carrier prepared from biomass waste and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 李国清等: "改性木屑处理含铬重金属废水的研究", 《宁德师专学报(自然科学版)》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104138748A (en) * | 2014-08-07 | 2014-11-12 | 黄山学院 | Compound biosorbent capable of greatly improving capability of adsorbing heavy metal by waste biomasses and preparation method thereof |
| CN104573273A (en) * | 2015-01-27 | 2015-04-29 | 江西理工大学 | Building method of modified bioadsorbent structure-activity relationship model and application thereof |
| CN104573273B (en) * | 2015-01-27 | 2017-05-24 | 江西理工大学 | Building method of modified bioadsorbent structure-activity relationship model and application thereof |
| CN106146758A (en) * | 2016-07-08 | 2016-11-23 | 中国地质大学（武汉） | A kind of ultraviolet light causes the method that sawdust surface grafting functional polymer prepares cation adsorbing material |
| CN106146758B (en) * | 2016-07-08 | 2019-01-15 | 中国地质大学（武汉） | A kind of method that ultraviolet light-initiated sawdust surface grafting functional polymer prepares cation adsorbing material |
| CN108212086A (en) * | 2018-01-19 | 2018-06-29 | 北京师范大学 | For the modified activated carbon absorbent and its preparation process of Adsorption ammonia nitrogen |
| CN109364926A (en) * | 2018-12-14 | 2019-02-22 | 国网山东省电力公司电力科学研究院 | The preparation method of catalyst for desulfurization wastewater class Fenton's reaction removal ammonia nitrogen |
| CN109364926B (en) * | 2018-12-14 | 2021-05-28 | 国网山东省电力公司电力科学研究院 | Preparation method of catalyst for removing ammonia nitrogen in desulfurization wastewater through Fenton-like reaction |
| CN113003770A (en) * | 2021-03-04 | 2021-06-22 | 江西理工大学 | Method for stably, circularly and efficiently treating salt-containing ammonia nitrogen wastewater by using ligand exchange adsorbent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103252216B (en) | 2014-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Shehzad et al. | An overview of heavily polluted landfill leachate treatment using food waste as an alternative and renewable source of activated carbon | |
| Xu et al. | Development of sludge-based adsorbents: preparation, characterization, utilization and its feasibility assessment | |
| CN103252216B (en) | Adsorbent, preparation process thereof and application of adsorbent to purification of ammonia-nitrogen wastewater with medium-low concentration | |
| Deng et al. | Biosorption of copper (II) and lead (II) from aqueous solutions by nonliving green algae Cladophora fascicularis: equilibrium, kinetics and environmental effects | |
| Graba et al. | Influence of adsorption parameters of basic red dye 46 by the rough and treated Algerian natural phosphates | |
| Elsayed et al. | Effective removal of anionic dyes from aqueous solutions by novel polyethylenimine-ozone oxidized hydrochar (PEI-OzHC) adsorbent | |
| CN108905999A (en) | A kind of new bio charcoal plural gel and its preparation method and application | |
| Krishna Murthy et al. | Process optimisation of methylene blue sequestration onto physical and chemical treated coffee husk based adsorbent | |
| Wang et al. | Enhanced nitrogen and phosphorus adsorption performance and stabilization by novel panda manure biochar modified by CMC stabilized nZVZ composite in aqueous solution: Mechanisms and application potential | |
| Li et al. | Biochar derived from Chinese herb medicine residues for rhodamine B dye adsorption | |
| Fu et al. | Hydrocotyle vulgaris derived novel biochar beads for phosphorus removal: static and dynamic adsorption assessment | |
| Chowdhury et al. | Review of renewable biosorbent from coir pith waste for textile effluent treatment | |
| Cao et al. | Phosphate removal from aqueous solution using calcium-rich biochar prepared by the pyrolysis of crab shells | |
| Qin et al. | Role of minerals in mushroom residue on its adsorption capability to Cd (II) from aqueous solution | |
| Kulkarni et al. | Sustainable wastewater management via biochar derived from industrial sewage sludge | |
| Hina | Application of biochar technologies to wastewater treatment: a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Soil Science, Massey University, Palmerston North, New Zealand | |
| Hameed et al. | Structural characteristics of dissolved black carbon and its interactions with organic and inorganic contaminants: A critical review | |
| Samaraweera et al. | Sustainable phosphate removal using Mg/Ca-modified biochar hybrids: Current trends and future outlooks | |
| CN113277607B (en) | Plant waste-based desulfurization wastewater treatment reagent and preparation process and application thereof | |
| CN102674522A (en) | Composite phenol removal agent capable of removing high-concentration phenyl hydroxide waste water and application method thereof | |
| Fahad et al. | The influence of eggshell particle sizes on the adsorption of organic dye | |
| Ahmad | Recovery of low concentration ammoniacal nitrogen from aquaculture wastewater using oil palm fiber biochar | |
| Sasikala et al. | Reduction of Chemical oxygen demand (COD) in stabilization of pond water by various activated carbons | |
| Harripersadth | Evaluating the performance of an eggshell-bagasse biosorption system in removing lead and cadmium from aqueous solutions | |
| ISMAIL | REMOVAL OF HEAVY METAL IONS FROM LOCAL BATTERY RECYCLING WASTEWATER USING FUNCTIONALIZED CORN HUSK DERIVED ACTIVATED CARBON |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20200603 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |