CN102234167A - Method for stabilizing phosphorus and heavy metal in sludge of sewage treatment factory - Google Patents
Method for stabilizing phosphorus and heavy metal in sludge of sewage treatment factory Download PDFInfo
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- CN102234167A CN102234167A CN 201010170369 CN201010170369A CN102234167A CN 102234167 A CN102234167 A CN 102234167A CN 201010170369 CN201010170369 CN 201010170369 CN 201010170369 A CN201010170369 A CN 201010170369A CN 102234167 A CN102234167 A CN 102234167A
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Abstract
The invention discloses a method for stabilizing phosphorus and heavy metal in sludge of a sewage treatment factory, and relates to the preparation of an activated red mud stabilizer and the method for stabilizing the phosphorus and the heavy metal in the sludge of the sewage treatment factory. The method has the main technical characteristics that: the activated red mud stabilizer is prepared by roasting cheap bauxite residue red mud serving as a raw material at a certain temperature, and is stirred and mixed uniformly with the sludge of the sewage treatment factory, and the phosphorus and the heavy metal in the excess sludge can be effectively stabilized after the mixture is cultured for a certain period of time. The product performance is that: the specific surface area of the prepared red mud stabilizer is 16.48 to 25.78m<2>/g, and the efficiency of stabilizing the phosphorus and the heavy metal is over 70 percent. The method is simple and practicable, high in treatment efficiency and low in treatment cost.
Description
Technical field
The invention belongs to the sludge of sewage treatment plant processing technology field, the solid steady method of phosphorus and heavy metal in the treatment plant's mud of particularly disposing of sewage.
Background technology
Sludge of sewage treatment plant is an inevitable product in the sewage treatment process, and along with population increases and the urbanization development, the sludge of sewage treatment plant amount increases year by year.It is big that sludge of sewage treatment plant has output, the characteristics that phosphorus and heavy metal content are high.The phosphorus that content is high, running off easily causes body eutrophication, the heavy metal that content is high, water body around enrichment and loss are polluted in plant materials easily.At present, phosphorus in the sludge of sewage treatment plant and heavy metal are handled, mainly taked the method for chemical fixation.Common chemical medicament and material have ferrous sulfate, aluminum chloride, calcium oxide etc., because chemical agent and material major part cost an arm and a leg, therefore be difficult to large-scale promotion application in actual engineering, seek the chemical agent of super quality and competitive price and material and be to solve the key of phosphorus and heavy metal problem in the sludge of sewage treatment plant.
Red mud is the residue that produces in the aluminum oxide production process, contains the oxide compound of abundant iron, aluminium and calcium, and these oxide compounds are basic raw materials of preparation sorbent material in the environmental technology field.Red mud by the proper method activation treatment, can be adsorbed phosphorus and heavy metal.The present invention is according to containing of red mud abundant iron, aluminium and the characteristics of the oxide compound of calcium, and by the proper method activation treatment, the steady admittedly agent of preparation activation red mud improves the solid steady effect of red mud to phosphorus in the sludge of sewage treatment plant and heavy metal with red mud.
Summary of the invention
The present invention seeks to: the solid steady method that phosphorus and heavy metal in a kind of sludge of sewage treatment plant are provided.
For achieving the above object, the invention provides following technical scheme:
With cheap red mud is starting material, adopts the method for calcination activation to prepare the steady admittedly agent of red mud, in sludge of sewage treatment plant, adds the steady admittedly agent of the activation red mud of preparing by a certain percentage, mixes, and cultivates certain hour.
After the present invention adopts technique scheme, mainly contain following characteristics:
(1) the steady admittedly agent of activation red mud can transfer to the pH of sludge of sewage treatment plant suitable scope, generates stable phosphorus and heavy metal compound, therefore can consolidate steady phosphorus and heavy metal.
(2) the water-soluble attitude content of phosphorus obviously descends in the sludge of sewage treatment plant after the processing, and iron aluminium combined and calcium combined content are increase trend.
(3) cadmium, zinc and plumbous exchangeable species content descend in the sludge of sewage treatment plant after the processing, and ferrimanganic combined content is increase trend.Thereby reduced the transport property and the bioavailability of heavy metal in the mud.
(4) the inventive method is simple to operate, makes full use of the red mud waste resource, and is with low cost, easy to utilize.
Embodiment
The present invention will be further described below in conjunction with example.
Example 1
The solid steady method concrete steps of phosphorus and heavy metal are as follows in a kind of sludge of sewage treatment plant:
(1) the steady admittedly agent of preparation activation red mud.
Red mud was directly ground 100 mesh sieves, the steady admittedly agent of 100 ℃ of roasting preparation activation red muds.
(2) solid steady sludge of sewage treatment plant.
After step (1) is finished, in sludge of sewage treatment plant, add the steady admittedly agent of activation red mud that step (1) is prepared, mix, cultivate a week.Wherein activate the steady admittedly agent of red mud: the weight percent of sludge of sewage treatment plant is 1: 10.
Test-results:
Get 1g sludge of sewage treatment plant and the blending activation red mud mud of steady agent admittedly, be placed in the polyethylene bottle, add the 10mL deionized water, being placed on oscillation frequency is 110 ± 10 times/minute, amplitude is vibration 1 hour on 40 millimeters the vibrator, with rotating speed 5000rpm centrifugal 20 minutes; Supernatant liquor is with 0.45 micron filtering with microporous membrane.
Its result such as following table:
| Element | Do not handle mud | Handle mud | Gu steady rate |
| Phosphorus (mg/Kg) | 237.00 | 65.00 | 72％ |
| Cadmium (mg/Kg) | 0.07 | Be lower than detection line | 100％ |
| Zinc (mg/Kg) | 65.82 | 4.99 | 92％ |
| Plumbous (mg/Kg) | 2.94 | 0.53 | 81％ |
As seen from the above table, add red mud admittedly sludge of sewage treatment plant phosphorus and the heavy metal of steady agent leach concentration and do not compare and reinforced the minimizing of steady agent, phosphorus, cadmium, zinc and plumbous solid steady efficient reach 72%, 100%, 92% and 81% respectively.
Claims (4)
1. the solid steady method of phosphorus and heavy metal in the sludge of sewage treatment plant, it is characterized in that with the red mud being starting material, the steady admittedly agent of method preparation activation red mud at certain temperature calcination activation, add the steady admittedly agent of activation red mud by a certain percentage, mix, cultivate certain hour, reach the purpose of steady admittedly phosphorus and heavy metal.
2. the steady admittedly agent of activation red mud according to claim 1, the technical characterictic of its preparation is: maturing temperature is controlled at 100-900 ℃.
3. mixing proportion according to claim 1 is characterized as, and steady admittedly agent of activation red mud and sludge of sewage treatment plant are by weight the 5-30% blending.
4. culture technique according to claim 1 is characterized as, and steady admittedly agent of activation red mud and sludge of sewage treatment plant incubation time are 1 day at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010170369 CN102234167A (en) | 2010-05-06 | 2010-05-06 | Method for stabilizing phosphorus and heavy metal in sludge of sewage treatment factory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010170369 CN102234167A (en) | 2010-05-06 | 2010-05-06 | Method for stabilizing phosphorus and heavy metal in sludge of sewage treatment factory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102234167A true CN102234167A (en) | 2011-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010170369 Pending CN102234167A (en) | 2010-05-06 | 2010-05-06 | Method for stabilizing phosphorus and heavy metal in sludge of sewage treatment factory |
Country Status (1)
| Country | Link |
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| CN (1) | CN102234167A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108048109A (en) * | 2017-12-20 | 2018-05-18 | 北京东方复地环境科技有限公司 | It is a kind of for multi-functional passivator of paddy fields in south china heavy metal-polluted soil Cd and preparation method thereof |
| CN108101343A (en) * | 2017-12-18 | 2018-06-01 | 李宇涵 | A kind of bauxite ground mass sludge treating agent and its preparation method and application |
| CN110026410A (en) * | 2019-04-09 | 2019-07-19 | 广州大学 | A method of metallic zinc in waste is stablized by the generation of spinelle |
| CN115231961A (en) * | 2022-08-30 | 2022-10-25 | 广西大学 | Method for processing organic compound fertilizer from sludge in domestic sewage |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1833789A (en) * | 2005-03-17 | 2006-09-20 | 中国科学院生态环境研究中心 | Repairing method of phosphor polluted soil |
| CN101143312A (en) * | 2006-09-12 | 2008-03-19 | 中国科学院生态环境研究中心 | Method for manufacturing and regenerating granular red mud absorber used for water process |
| CN101665278A (en) * | 2008-09-05 | 2010-03-10 | 中国科学院生态环境研究中心 | Compound phosphorus removal flocculating agent for water treatment |
-
2010
- 2010-05-06 CN CN 201010170369 patent/CN102234167A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1833789A (en) * | 2005-03-17 | 2006-09-20 | 中国科学院生态环境研究中心 | Repairing method of phosphor polluted soil |
| CN101143312A (en) * | 2006-09-12 | 2008-03-19 | 中国科学院生态环境研究中心 | Method for manufacturing and regenerating granular red mud absorber used for water process |
| CN101665278A (en) * | 2008-09-05 | 2010-03-10 | 中国科学院生态环境研究中心 | Compound phosphorus removal flocculating agent for water treatment |
Non-Patent Citations (1)
| Title |
|---|
| 《环境科学学报》 20091106 史丽等 活化赤泥去除猪场废水生化处理出水中的磷和重金属 2282-2288 第29卷, 第11期 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108101343A (en) * | 2017-12-18 | 2018-06-01 | 李宇涵 | A kind of bauxite ground mass sludge treating agent and its preparation method and application |
| CN108048109A (en) * | 2017-12-20 | 2018-05-18 | 北京东方复地环境科技有限公司 | It is a kind of for multi-functional passivator of paddy fields in south china heavy metal-polluted soil Cd and preparation method thereof |
| CN110026410A (en) * | 2019-04-09 | 2019-07-19 | 广州大学 | A method of metallic zinc in waste is stablized by the generation of spinelle |
| CN115231961A (en) * | 2022-08-30 | 2022-10-25 | 广西大学 | Method for processing organic compound fertilizer from sludge in domestic sewage |
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Application publication date: 20111109 |