CN106395969A - Method for treating Cd<2+>/Cu<2+> wastewater by using animal blood powder as adsorbent - Google Patents
Method for treating Cd<2+>/Cu<2+> wastewater by using animal blood powder as adsorbent Download PDFInfo
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- CN106395969A CN106395969A CN201611048069.7A CN201611048069A CN106395969A CN 106395969 A CN106395969 A CN 106395969A CN 201611048069 A CN201611048069 A CN 201611048069A CN 106395969 A CN106395969 A CN 106395969A
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- animal blood
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- 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
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
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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
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Water Treatment By Sorption (AREA)
- Treatment Of Water By Ion Exchange (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a method for treating Cd<2+>/Cu<2+> wastewater by using animal blood powder as an adsorbent. The animal blood powder can be utilized to efficiently remove cadmium and copper ions in the wastewater, so that the concentrations of the residual heavy cadmium and copper ions in the treated wastewater reach the discharge standards after wastewater treatment. The animal blood powder has the advantages of wide raw material sources and low price, and has broad market prospects. When the heavy metal ion concentration in the wastewater is lower, the animal blood powder with adsorbed heavy metal ions can also be used as flower soil in gardens, thereby achieving the goal of recycling waste materials and resources.
Description
Technical field
The invention belongs to solid waste -- the resource of slaughterhouse's blood and its application in sewage disposal, tool
Body is related to a kind of method with animal blood powder for sorbent treatment heavy metal ion-containing waste water.
Background technology
With the development of modern industry, water containing heavy metal ion pollution problem is increasingly serious, how to obtain new, cheap,
High-adsorption-capacity（Or efficient clearance）Adsorbing material become one of key content of heavy metal ion-containing waste water treatment research.
The heavy metal ion-containing waste water processing method of development and application at present mainly has chemical precipitation method, electrolysis, ion exchange, mixes
Coagulate or flocculence, membrane separation process, absorption method.Chemical precipitation method is so that the heavy metal ion in dissolved state in waste water is changed into not
The method being dissolved in the heavy metal compound of water, including neutralization precipitation method and sulphide precipitation etc.；Electrolysis is using electrolysis
Ultimate principle, is made heavy metal ions in wastewater pass through electrolysis, on sun-cloudy the two poles of the earth, redox reaction occurs respectively, separated with this
Heavy metal contaminants；Ion exchange is to be carried out using the heavy metal ion in the cation exchange groups on ion-exchanger, with waste water
Exchange reaction, heavy metal ion is replaced the method being removed on exchanger；Coagulation or flocculence are by waste water
Add mixed（Wadding）Solidifying agent, makes the colloid in waste water and particulate matter form alumen ustum, accelerates heavy metal ion coagulation, reach the mesh of removal
's；Membrane separation process is using outside energy or chemical potential difference as motive force, using natural or synthetic macromolecule membrane pair
Bi-component or multi-component solute and solvent carry out a kind of method separating, be classified, purify and concentrating；Absorption method is to utilize porous
Property adsorbing material remove heavy metal ions in wastewater method.
This several method has respective pluses and minuses, and chemical precipitation method has that simple to operate, effect is preferable, lower-cost excellent
Point, but substantial amounts of heavy metallic salt mud is not disposable, easily causes secondary pollution, simultaneously handled after waste water can not directly arrange
Put, residual concentration of heavy metal ion higher it is impossible to realize discharge, and floor space is big, treating capacity is little, poor selectivity.Electrolysis
Technical maturity, floor space are little, removal efficiency is high, non-secondary pollution, the heavy metal of precipitation can reclaim, but this method is not suitable for
Containing the relatively low wastewater treatment of concentration of heavy metal ion, power consumption is big, wastewater treatment capacity is little, processing cost is high.Ion exchange is grasped
Work is simple, high treating effect, exchanger are renewable, floor space is little, and heavy metal concentration is less than 10 mg L-1Wastewater treatment
Effect is good, but this method one-time investment is larger, and material and operating cost are higher, is affected larger by useless impurities in water, and uncomfortable
The conjunction all heavy metal ion of removal and the heavy metal ion adsorbed need eluting and resin to need to regenerate, thus producing new giving up
Water.Coagulation or flocculence can process heavy metal concentration and be less than 100 mg L-1Or be higher than 1000 mg L-1Waste water, be easy to
Intermittent duty, sludge stabilization is good, bacterial activity is low, effect is good, but this method running cost is high, needs to consume substantial amounts of chemistry examination
Agent, and have least concentration limit value it is difficult to reach discharge standard.Membrane separation process have equipment be simple and convenient to operate, process efficiently,
The advantages of energy-conservation, but the easily contaminated thing blocking of film, short life, renewal cost costliness, such as film regeneration also needs acid-alkali treatment to regenerate, will
Produce new waste water or new garbage it is difficult to realize a step up to standard and other effects；Absorption method has simple to operate, treatment effeciency is high etc.
Advantage, but the adsorbent price of industrial use at present generally higher it is impossible to be used widely it is often more important that handled
Waste water remains concentration of heavy metal ion difficult to reach discharge standard.
Content of the invention
In view of all there is complex operation, operating cost height, removing in conventional several heavy metal ion-containing waste water processing methods
The shortcomings of effect difference, the present invention proposes one kind with slaughterhouse's animal blood as raw material, is processed into animal blood powder, and as absorption
Agent processes method and the application of heavy metal ion-containing waste water.
One aspect of the present invention, provides a kind of new adsorbent --- animal blood powder, by slaughterhouse's animal blood through 145-
165 DEG C of high temperature gas flows are dried, pulverize described products are obtained, and the dried water content of described animal blood powder is 5-12%, pulverize and are
50-200 mesh.
Another aspect of the present invention, additionally provides one kind with animal blood powder for sorbent treatment Cd2+、Cu2+The side of waste water
Method, specific as follows：
Process and contain Cd2+The method of waste water：By animal blood powder and containing Cd2+The waste water of ion mixes in the reactor, adjusts pH value and is
5-5.5, stirring and adsorbing 2-4h under room temperature condition, its mixing speed turns for 30-100 per minute, remains Cd in solution2+Ion concentration
Less than 0.1 mg L-1Reach wastewater discharge standard, the addition of described animal blood powder and Cd2+Ion total content ratio is 1:
4.8-5, its unit is g:mg.
Process and contain Cu2+The method of waste water：By animal blood powder and containing Cu2+The waste water of ion mixes in the reactor, adjusts pH
It is worth for 7-8, stirring and adsorbing 15-18h under room temperature condition, its mixing speed turns for 30-100 per minute, in solution, remain Cu2+Ion
Concentration is less than 0.5 mg L-1Reach wastewater discharge standard；The addition of described animal blood powder and Cu2+Ion total content ratio
For 1:6.6-10, its unit is g:mg.
Contain Cd when processing2+Electroplating wastewater when, its discharge standard require higher, its processing method be two-step method：First according to
The addition of animal blood powder and heavy metal ion total content ratio are 1:4.8-5（g:mg）Carry out first step process, reach solution
Middle residual concentration of heavy metal ion is 0.1 mg L-1Left and right, then the filtrate that the first step is processed carries out second step process, will
Filtrate is according to 1%（Weight by volume ratio）Ratio add animal blood powder carry out second absorption, i.e. two-step method.Through two steps
After method adsorption treatment, remaining Cd in solution2+Concentration is down to 0.006 mg L-1, less than plating pollutant emission standard（GB-
21900-2008）To Cd2+Emission limit（0.05 mg·L-1）.
Animal blood powder adsorbent prepared by the present invention has the advantage that：This blood powder can efficiently remove the weight in waste water
Metal ion, can make handled waste water residual concentration of heavy metal ion reach the discharge standard after electroplating wastewater processing, you can
Heavy metals ion residues amount after realization process is in 0.05mg L-1Hereinafter, this is all adsorbents at present（Ion exchange
Except resin）It is difficult to, and the raw material sources of animal blood powder are extensive, cheap（About 6000-8000 unit per ton）, and
When heavy metal ions in wastewater concentration is relatively low（When meeting landscape flower soil heavy metal ion content requirement）, adsorbed heavy metal
The blood powder of ion can use as landscape flower soil, realizes the target of utilization of waste as resource.
Specific embodiment
With reference to embodiments, the specific embodiment of the present invention is described in more details, so as to more preferably
The advantage that ground understands the solution of the present invention and its various aspects.However, specific embodiments described below and embodiment are only
It is descriptive purpose, rather than limitation of the present invention.
Experimental technique used in following embodiments if no special instructions, is conventional method.
Material used, reagent etc. in following embodiments, if no special instructions, all commercially obtain.
Embodiment 1：The preparation method of animal blood powder
The animal blood that slaughterhouse is discarded becomes thick blood powder granule through 155 DEG C of high temperature gas flow dryings, and dried water content is
10%, then through being ground into the animal blood powder adsorbent of 100 mesh, become efficient absorption adsorbent for heavy metal.
Embodiment 2：One-step method processes Cd2+The method of concentration waste water
1., in 12 tons of reactors, it is 20mg L equipped with 10 tons of initial concentrations-1Cd2+Solution, adds the 40kg of above-mentioned preparation
Animal blood powder adsorbent, adjusting pH value is 5.0, stirring and adsorbing 2h under room temperature condition, and its mixing speed is 80 turns per minute, filters
Draw the filtrate of low-concentration heavy metal ions.
2. take step filtrate 50 mL to be 1. positioned in 150 mL conical flasks, add 2.5 mL nitric acid, electric hot plate adds
Heat is cleared up it is ensured that sample does not seethe with excitement, steam to 5 mL about, add 2.5 mL nitric acid and 1 mL perchloric acid again, then steam to 1 mL
Left and right, takes off cooling, plus ultra-pure water is settled to 50 mL, then this constant volume liquid is surveyed with WYS2200 type atomic absorption spectrophotometer
Surely remain concentration of cadmium ions.
Measurement result is remaining Cd in filtering solution2+Ion concentration is 0.1 mg L-1, reach integrated wastewater discharge standard
（GB8978-1996）Middle Cd2+Ion emission limit 0.1 mg L-1.
Embodiment 3：Two-step method processes Cd in electroplating wastewater2+Method
1. discharge through common adsorbents handling process again because electroplating wastewater is typically processed through chemical precipitation, but generally
Difficult to reach discharge standard, thus need modified technique or adsorbent, the high concentrations of Cd after first chemical precipitation being processed2+Waste water passes through
The first step is processed, and that is, addition and heavy metal ion total content ratio according to animal blood powder are 1:5（g:mg）Carry out the first step
Process, the Cd specifically, in 12 tons of reactors or reaction tank, after 10 tons of chemical precipitations process of input2+Solution, Cd2+Concentration
For 20mg L-1, add the 40kg animal blood powder adsorbent of above-mentioned preparation, adjusting pH value is 5.0, stirring and adsorbing 2h, its stirring speed
Spend for 80 turns per minute, filter and draw remaining Cd2+Ion concentration is 0.1 mg L-1The treatment fluid of left and right.
2. again the filtrate that the first step is processed is carried out second step process, will filtrate according to 1%（Weight by volume ratio）'s
Ratio adds animal blood powder to carry out second absorption（Two-step method）, other process conditions are same as Example 2.
3. after two-step method adsorption treatment, remaining Cd in solution2+Concentration is down to 0.006 mg L-1, dirty less than plating
Dye thing discharge standard（GB-21900-2008）To Cd2+Emission limit（0.05 mg·L-1）, its analysis determining method is to implement
Example 2 is identical.
Embodiment 4：Containing Cu2+The processing method of waste water
1., in 12 tons of reactors, it is 20mg L equipped with 10 tons of initial concentrations-1Cu2+Solution, adds the 30kg of above-mentioned preparation
Animal blood powder adsorbent, adjusting pH value is 7, stirs 15h under room temperature condition, and its mixing speed is 80 turns per minute, and filtration draws
The filtrate of low-concentration heavy metal ions.
2. take step filtrate 50 mL to be 1. positioned in 150 mL conical flasks, add 2.5 mL nitric acid, electric hot plate adds
Heat is cleared up, and its step is same as Example 2, then measures residual Cu with WYS2200 type atomic absorption spectrophotometer2+ ion is dense
Degree.Remaining Cu in solution2+Ion concentration is 0.411 mg L-1, less than plating pollutant emission standard（GB-21900-2008）
To Cu2+Emission limit（0.5 mg·L-1）.
Claims (3)
1. one kind is with animal blood powder for sorbent treatment Cd2+、Cu2+The method of waste water is it is characterised in that the method includes walking as follows
Suddenly：
1. animal blood powder preparation：Discarded animal blood is become thick blood powder granule, again warp through 145-165 DEG C of high temperature gas flow drying
Cross the animal blood powder adsorbent being ground into 50-200 mesh, the dried water content of described animal blood powder is 5-12%；
2. process and contain Cd2+The method of waste water：By animal blood powder and containing Cd2+The waste water of ion mixes in the reactor, adjusts pH value
For 5-5.5, stirring and adsorbing 2-4h under room temperature condition, its mixing speed turns for 30-100 per minute, remains Cd in solution2+Ion is dense
Degree is less than 0.1 mg L-1Reach wastewater discharge standard；
The addition of described animal blood powder and Cd2+Ion total content ratio is 1:4.8-5, its unit is g:mg；
Or：
Process and contain Cu2+The method of waste water：By animal blood powder and containing Cu2+The waste water of ion mixes in the reactor, adjusts pH value and is
7-8, stirring and adsorbing 15-18h under room temperature condition, its mixing speed turns for 30-100 per minute, remains Cu in solution2+Ion concentration
Less than 0.5 mg L-1Reach wastewater discharge standard；
The addition of described animal blood powder and Cu2+Ion total content ratio is 1:6.6-10, its unit is g:mg.
2. one kind as claimed in claim 1 is with animal blood powder for sorbent treatment Cd2+、Cu2+The method of waste water, its feature exists
In：Containing Cd2+When waste water is electroplating wastewater, the solution that 2. above-mentioned steps are processed need to carry out second adsorption, will step 2. process
According to weight by volume, the ratio than 1% adds animal blood powder to carry out second absorption, through two-step method adsorption treatment to solution
Afterwards, remaining Cd in solution2+Concentration is less than 0.05 mg L-1Reach wastewater discharge standard.
3. one kind as claimed in claim 1 or 2 is with animal blood powder for sorbent treatment Cd2+、Cu2+The method of waste water, its feature
It is：Cd in described heavy metal ion-containing waste water2+、Cu2+The initial concentration of ion is less than 20mg L-1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611048069.7A CN106395969B (en) | 2016-11-25 | 2016-11-25 | A method of Cd2+ or Cu2+ waste water is handled by adsorbent of animal blood meal |
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| CN201611048069.7A CN106395969B (en) | 2016-11-25 | 2016-11-25 | A method of Cd2+ or Cu2+ waste water is handled by adsorbent of animal blood meal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113842899A (en) * | 2021-11-12 | 2021-12-28 | 西南科技大学 | Method for preparing adsorbent for removing heavy metal in wastewater by utilizing Chinese redbud fruit shell |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100511A (en) * | 1987-01-28 | 1988-08-10 | 山西大学 | Be used to handle the resin and the method for making thereof of mercury-containing waste water |
| JPH0347535A (en) * | 1989-07-12 | 1991-02-28 | Teruo Tomota | Preparation of granule for adsorbing cyan and heavy metal compound |
| US20090018668A1 (en) * | 2003-12-09 | 2009-01-15 | Separation Design Group, Llc | Sorption method, device, and system |
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2016
- 2016-11-25 CN CN201611048069.7A patent/CN106395969B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100511A (en) * | 1987-01-28 | 1988-08-10 | 山西大学 | Be used to handle the resin and the method for making thereof of mercury-containing waste water |
| JPH0347535A (en) * | 1989-07-12 | 1991-02-28 | Teruo Tomota | Preparation of granule for adsorbing cyan and heavy metal compound |
| US20090018668A1 (en) * | 2003-12-09 | 2009-01-15 | Separation Design Group, Llc | Sorption method, device, and system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113842899A (en) * | 2021-11-12 | 2021-12-28 | 西南科技大学 | Method for preparing adsorbent for removing heavy metal in wastewater by utilizing Chinese redbud fruit shell |
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