CN1958465A - Method for purifying water quality, and picking-up noble metal by using white envelope of biological waste - Google Patents
Method for purifying water quality, and picking-up noble metal by using white envelope of biological waste Download PDFInfo
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- CN1958465A CN1958465A CN 200610117173 CN200610117173A CN1958465A CN 1958465 A CN1958465 A CN 1958465A CN 200610117173 CN200610117173 CN 200610117173 CN 200610117173 A CN200610117173 A CN 200610117173A CN 1958465 A CN1958465 A CN 1958465A
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Abstract
This invention relates to a method for purifying water and extracting noble metals by using a biological waste material, egg membrane. The method comprises: washing egg membrane, drying, pulverizing, screening 4 groups of egg membrane powder with different sizes as the wastewater purification membranes, filling into 4 filtration columns, connecting the columns in series according to the sizes of the egg membrane powder to obtain high-efficiency wastewater purification equipment, and utilizing the equipment to perform coarse filtration, middle filtration and fine filtration to obtain purified water. Heavy metals adsorbed by the filtration columns can be recovered. The filtration columns can be purified for recycling. The wastewater treatment membranes in this invention have such advantages as low cost and simple process, and can be used to treat wastewater containing low-concentration heavy metals, thus have wide potential applications.
Description
Technical field
The present invention relates to a kind of method of utilizing biological waste egg film to carry out purification of water quality and extracting noble metal, this is the technology of a kind of treatment of wastes with processes of wastes against one another, refuse reclamation comprehensive regulation environmental pollution, especially refer to that utilizing biological waste efficiently to purify waste water extracts the green technology of noble metal simultaneously, be fit to be applied to various industrial wastewater treatment systems and city domestic sewage processing etc., belong to the environmental engineering technical field of sewage.
Background technology
Along with environmental problem is on the rise, available Freshwater resources reduce gradually, and therefore how reducing sewage discharge and effectively disposing of sewage becomes problem demanding prompt solution in the global range.At present the purifying treatment of sewage be can be summarized as the method and the technology of physics, chemistry, biology, all there is certain drawback in actual applications in these technology.In addition, all contain certain density heavy metal ion in common industry and the sanitary sewage, this has not only brought certain difficulty to decontamination process, and some noble metals are very valuable mineral wealth, in sewage treatment process, if can adopt suitable technique, can reclaim noble metal wherein when water quality is purified again, will be to kill two birds with one stone, have the important environmental protection social effect and the invention of economic worth.
Find that by literature search a lot of bioremediation reports that center on purification of water quality and extract noble metal have been arranged.As Chinese patent 91107375.2, name is called " application in water purifier of chitin and derivative thereof ", and the technical characterstic of this patent is to extract from the crust of animal the preparation chitin and derivative is applied to purifier extraction heavy metal as adsorption medium.Chinese patent 99815312.5, name is called " wastewater treatment method that contains heavy metal ", and the technical characterstic of this patent is to purify water and extract noble metal by being fixed on bacterial reduction precipitation of heavy metals ion on the grains of sand.Chinese patent 200410052108.1, name is called " utilizing velutinous cinquefoil to administer the method for soil and water body zinc, lead, cadmium pollution ", and the technical characterstic of this patent is to utilize velutinous cinquefoil to the adsorption and enrichment effect activation contaminated soil of some metal ions and purify water and extract heavy metal.Chinese patent 200510031203.8 and 200510031205.7, name is called the method for cadmium/plumbing waste water " utilize mushroom culture medium waste to remove contain ", and the technical characterstic of this invention is to utilize the mushroom culture medium waste that can not produce mushroom to make the purpose that biological adsorption agent Filtration Adsorption lead, cadmium ion reach purifying waste water processing after high-temperature sterilization is pulverized.Above method all is to utilize the vital movement process of bacterium, fungi (yeast), algae etc., thereby reaches the purpose of administering heavy metal wastewater thereby by the heavy metal precipitation in the waste water, absorption are absorbed, reduce its toxicity.Though this is an emerging sewage disposal way, but prior biological sorbent material and preparation method are difficult to satisfy the requirements at the higher level of people for the repairing heavy metal pollution water body, especially refer to pollute little, requirements such as efficient is high, immunity from interference is strong, heavy metal separation utilization, and these governance processes still need be by the process facility of complexity, higher capital construction cost and running cost are arranged, from sewage, extract noble metal and still be considered to a following engineering.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of method of utilizing biological waste egg film to carry out purification of water quality and extracting noble metal is provided, material for water treatment can recycle, the making operation cost is cheap, purifying treatment sewage not only, simultaneously can extract noble metal, have very high social benefit and environmental benefit.
In order to reach this purpose, the present invention selects for use the common poultry egg film of wide material sources to handle material as purification of waste water, earlier after the cleaning of egg film, the drying, the egg membrane powder of telling four groups of different scales through pulverizing is as the water treatment purification membrane, it is filled into respectively in four Filter columns, and from big to small Filter column is together in series successively by egg membrane powder yardstick in the post, promptly make the device that purification of waste water especially efficiently purifies at the sewage that contains heavy metal ion.Utilize this refining plant that sewage is carried out coarse filtration, middle filter and fine filtering then, be purified water.With recyclable each the adsorbed heavy metal species of Filter column desorption, and Filter column purifies the renewable recycle in back.
The concrete steps of the inventive method are as follows:
1, selects common bird eggshell, after rinsing well, in the acid solution of 1～6mol/L, soak after 0.3-2 hour, fish for and isolate the egg film.
2, with after the egg film rinsing totally, air blast at room temperature dries up, the egg membrane powder of telling four groups of different scales through grinding screen is as the water treatment purification membrane, be filled into respectively in four Filter columns, the order number of egg membrane powder is respectively: 16～30,30～60,60～120,120～250 orders are together in series four Filter columns from coarse to fine by the yardstick of egg membrane powder in the Filter column then and make water-purification plant.
3, at normal temperatures and pressures, successively by placed in-line Filter column, sewage is introduced speed control at 0.5～3.0ml/min, carries out coarse filtration in turn with treatment sewage, middle filter, and the fine filtering process, heavy metal ion is effectively absorbed, and promptly obtains satisfactory purifying waste water.
4, Filter column is carried out desorption and handle regeneration, and can be by further treatment and purification waste liquid with the Separation and Recovery noble metal.At Precious Metals-Gold, after the Filter column that can be earlier will contain gold ion with the NaOH solution of 1～3mol/L soaks 0.5 hour, utilize whizzer to separate 0.5 hour again with the speed of 100～150rpm, can obtain containing the solution of gold ion.At heavy metal lead, can in the ammonia soln of 2～5mol/L, soak 2～3 hours to leaded ionic Filter column after, promptly get leaded solion.At heavy metal cadmium, can in the acetum of 5～8mol/L, soak 2～3 hours to the Filter column that contains cadmium ion after, promptly get and contain cadmium-ion solution.
Acid solution described in the step 1 of the present invention refers to hydrochloric acid (HCl), nitric acid (HNO especially
3), in the acetic acid (HAc) one or several.The used biological waste egg film of the present invention can also efficiently be peeled off by mechanical process.Here acid solutions and soak time are chosen according to needs of production, are purpose with the demoulding.
Adopt the egg membrane powder of 4 kinds of different size yardsticks to fill Filter column in the step 2, and then be assembled into the tandem type water-purification plant, can reach the ideal decontamination effect improving.Egg film order number is more little, and decontamination effect improving is superior more, but the order number is unsuitable too small, in order to avoid egg membrane powder is brought to and instead in the water body causes secondary pollution when crossing post.
The sewage of handling in the step 3 can contain following a few metal ion species, Au
+, Au
3+, Ag
+, Co
2+, Zn
2+, Cu
2+, Pb
2+, Cd
2+, Ni
2+Deng, utilize the egg film processing layer of different size that these metal ions are carried out reduce deposition or absorption, thereby obtain meeting purifying waste water of certain standard.
To the further manipulation of regeneration of Filter column, and utilize treatment solution in the step 4, look the metal ion type that to extract and work out corresponding processing scheme extract to reclaim precious metal, heavy metal.
The present invention has substantive distinguishing features and marked improvement, prepared water-treatment biological type purification membrane is with low cost, technology is simply efficient, pointed strong, good, the economic environmental protection of selectivity, the advantage that the quality of purifying waste water is high especially is fit to the indeterminable processing that contains low concentration heavy metal water of traditional method.Egg film scavenging material is subjected to light metal ion interference such as calcium in the aqueous solution, magnesium, potassium, sodium little in addition, adapt to potential of hydrogen and temperature in the relative broad range, wide material sources, and can recycle, effectively overcome the existing defective of existing biosorption process, had remarkable application prospect and good economic results in society and environmental benefit aspect the environmental wastewater improvement such as municipal wastewater, industrial sewage.
Embodiment
Below in conjunction with embodiment technical scheme of the present invention is further described.Following examples do not constitute limitation of the invention.
Embodiment 1
The egg eggshell is rinsed well, be immersed in the dilute hydrochloric acid solution of 2mol/L after about 0.3 hour, fish for out the egg film.Air blast at room temperature dried up after the egg film cleaned up, grinding screen is told four kinds of yardstick specifications, its order number is respectively 16-30,30-60,60-120, the 120-250 order is filled these egg membrane powders respectively then and is filled in four Filter columns, according to egg membrane powder thickness in Filter column cascade filtration post successively, make again at the device of efficiently purifying waste water that contains heavy metal ion.
The sewage that will contain lead ion is formulated to the pH value in 2～3 scope with the dilute acetic acid solution of 5mol/L, at room temperature with the speed of 0.5ml/min by polyphone type Filter column, carry out coarse filtration successively, middle filter, behind the fine filtering, the specific absorption of lead ion can reach 92%.Carry out desorption with ammonia soln afterwards and handle, Filter column was soaked in the ammonia soln of 5mol/L 2～3 hours, not only can isolate leaded ion solution, but after the pillar water cleaned up also recirculation use.
Embodiment 2
The egg eggshell is rinsed well, be immersed in the dilute hydrochloric acid solution of 1mol/L after about 1 hour, fish for out the egg film.Air blast at room temperature dried up after the egg film cleaned up, grinding screen is told four kinds of yardstick specifications, its order number is respectively 16-30,30-60,60-120, the 120-250 order is filled these egg membrane powders respectively then and is filled in four Filter columns, according to egg membrane powder thickness in Filter column cascade filtration post successively, make again at the device of efficiently purifying waste water that contains heavy metal ion.
The sewage that will contain lead ion is formulated to the pH value in 3～4 scope with the dilute acetic acid solution of 3mol/L, at room temperature with the speed of 1ml/min by polyphone type Filter column, carry out coarse filtration successively, middle filter, behind the fine filtering, lead ion can be by efficient absorption.Carry out desorption with ammonia soln afterwards and handle, earlier Filter column was soaked in the ammonia soln of 3mol/L 2～3 hours, not only can isolate leaded ion solution, but also recirculation use after the pillar water cleaned up.
Embodiment 3
The egg eggshell is rinsed well, be immersed in the dilute nitric acid solution of 1.5mol/L after about 0.5 hour, fish for out the egg film.Air blast at room temperature dried up after the egg film cleaned up, and grinding screen is told four kinds of yardstick specifications, its order number is respectively 16-30,30-60,60-120, the 120-250 order is filled these egg membrane powders respectively then and is filled in four Filter columns, according to the thickness of egg membrane powder in Filter column cascade filtration post successively, make again at the device of efficiently purifying waste water that contains heavy metal ion.
The sewage that contains cadmium ion is regulated pH to 12～13 with the weak ammonia of 5mol/L, by the biotype post of contacting, carry out coarse filtration successively with the speed of 0.5ml/min, middle filter, behind the fine filtering, cadmium ion is by efficient absorption, and specific absorption can reach 95%.Carry out desorption with dilute acetic acid solution and handle, Filter column was soaked under the room temperature 2～3 hours in 5～8mol/L dilute acetic acid, can isolate the solution that contains cadmium ion, at last the pillar water is cleaned up and can recirculation use.
Embodiment 4
The egg eggshell is rinsed well, be immersed in the dilute acetic acid solution of 6mol/L after about 2 hours, fish for out the egg film.Air blast at room temperature dried up after the egg film cleaned up, and grinding screen is told four kinds of yardstick specifications, its order number is respectively 16-30,30-60,60-120, the 120-250 order is filled these egg membrane powders respectively then and is filled in four Filter columns, according to the thickness of egg membrane powder in Filter column cascade filtration post successively, make again at the device of efficiently purifying waste water that contains heavy metal ion.
The sewage that contains cadmium ion is regulated pH to 11-12 with the weak ammonia of 2mol/L, pass through polyphone type Filter column, carry out coarse filtration successively with the speed of 1.5ml/min, middle filter, behind the fine filtering, cadmium ion is by efficient absorption.Carry out desorption with dilute acetic acid solution and handle, earlier pillar was soaked under the room temperature 2～3 hours in 2～3mol/L dilute acetic acid, not only can isolate the solution that contains cadmium ion, but after the pillar water cleaned up also recirculation use.
Claims (2)
1, a kind of method of utilizing biological waste egg film to carry out purification of water quality and extracting noble metal is characterized in that comprising the steps:
1) selects common bird eggshell, after rinsing well, in the acid solution of 1～6mol/L, soak after 0.3-2 hour, fish for and isolate the egg film;
2) air blast at room temperature after the egg film rinsing is totally dried up, the egg membrane powder of telling four groups of different scales through grinding screen is as the water treatment purification membrane, be filled into respectively in four Filter columns, the order number of egg membrane powder is respectively: 16～30,30～60,60～120,120～250 orders are together in series four Filter columns from coarse to fine by the yardstick of egg membrane powder in the Filter column then and make water-purification plant;
3, at normal temperatures and pressures, successively by placed in-line Filter column, sewage is introduced speed control at 0.5～3.0ml/min, carries out coarse filtration in turn with treatment sewage, middle filter, and the fine filtering process, heavy metal ion is effectively absorbed, and promptly obtains satisfactory purifying waste water;
4) Filter column is carried out desorption and handles regeneration, and by further treatment and purification waste liquid with the Separation and Recovery noble metal; Wherein, at Precious Metals-Gold, the Filter column that first NaOH solution with 1～3mol/L will contain gold ion soaked 0.5 hour, utilized whizzer to separate 0.5 hour with the speed of 100～150rpm again, promptly obtained containing the solution of gold ion; At heavy metal lead, leaded ionic Filter column was soaked in the ammonia soln of 2～5mol/L 2～3 hours, promptly get leaded solion; At heavy metal cadmium, the Filter column that contains cadmium ion was soaked in the acetum of 5～8mol/L 2～3 hours, promptly get and contain cadmium-ion solution.
2, according to the utilizing biological waste egg film to carry out purification of water quality and extract the method for noble metal of claim 1, it is characterized in that described acid solution, refer to hydrochloric acid (HCl), nitric acid (HNO especially
3), in the acetic acid (HAc) one or several.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101171737A CN100400431C (en) | 2006-10-16 | 2006-10-16 | Method for purifying water quality, and picking-up noble metal by using white envelope of biological waste |
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|---|---|---|---|
| CNB2006101171737A CN100400431C (en) | 2006-10-16 | 2006-10-16 | Method for purifying water quality, and picking-up noble metal by using white envelope of biological waste |
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|---|---|
| CN1958465A true CN1958465A (en) | 2007-05-09 |
| CN100400431C CN100400431C (en) | 2008-07-09 |
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|---|---|---|---|
| CNB2006101171737A Expired - Fee Related CN100400431C (en) | 2006-10-16 | 2006-10-16 | Method for purifying water quality, and picking-up noble metal by using white envelope of biological waste |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103191701A (en) * | 2013-04-17 | 2013-07-10 | 北京工业大学 | Preparation method of gold absorbent based on waste eggshell membrane biomaterial |
| CN106902760A (en) * | 2017-03-30 | 2017-06-30 | 金陵科技学院 | A kind of eggshell load zinc oxide material and its preparation method and application |
| ES2940917A1 (en) * | 2023-02-22 | 2023-05-12 | Tecnic Biotech S L | AN APHERESIS FILTER AND A METHOD FOR THE REMOVAL OF HEAVY METALS IN BLOOD (Machine-translation by Google Translate, not legally binding) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1066008A (en) * | 1991-04-23 | 1992-11-11 | 国家医药管理局上海医药工业研究院 | The application in water purifier of chitin and derivative thereof |
| CN100355664C (en) * | 2005-01-28 | 2007-12-19 | 湖南大学 | Method for adsorbing chromium-contained in industrial waste water using mushroom culture medium waste material |
| CN1325387C (en) * | 2005-01-28 | 2007-07-11 | 湖南大学 | Method for adsorbing cndmium-contained inindustrial waste water using mushroom culture medium waste material |
| CN100355665C (en) * | 2005-01-28 | 2007-12-19 | 湖南大学 | Method of adsorbing lead-contained in industial wste water using mushroom culture medium waste material |
-
2006
- 2006-10-16 CN CNB2006101171737A patent/CN100400431C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103191701A (en) * | 2013-04-17 | 2013-07-10 | 北京工业大学 | Preparation method of gold absorbent based on waste eggshell membrane biomaterial |
| CN106902760A (en) * | 2017-03-30 | 2017-06-30 | 金陵科技学院 | A kind of eggshell load zinc oxide material and its preparation method and application |
| CN106902760B (en) * | 2017-03-30 | 2019-07-09 | 金陵科技学院 | A kind of eggshell load zinc oxide material and its preparation method and application |
| ES2940917A1 (en) * | 2023-02-22 | 2023-05-12 | Tecnic Biotech S L | AN APHERESIS FILTER AND A METHOD FOR THE REMOVAL OF HEAVY METALS IN BLOOD (Machine-translation by Google Translate, not legally binding) |
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|---|---|
| CN100400431C (en) | 2008-07-09 |
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Granted publication date: 20080709 Termination date: 20101016 |