CN106829956A - A kind of method that utilization titanium white waste acid prepares active sludge carbon - Google Patents
A kind of method that utilization titanium white waste acid prepares active sludge carbon Download PDFInfo
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- CN106829956A CN106829956A CN201710163677.0A CN201710163677A CN106829956A CN 106829956 A CN106829956 A CN 106829956A CN 201710163677 A CN201710163677 A CN 201710163677A CN 106829956 A CN106829956 A CN 106829956A
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- titanium white
- waste acid
- white waste
- sludge
- active sludge
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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
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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
- 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
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a kind of method that utilization titanium white waste acid prepares active sludge carbon, titanium white waste acid is acted on this method the excess sludge of municipal sewage plant's second pond discharge, prepares active sludge carbon, and preparation method is：1) second pond excess sludge is crushed to constant weight, after cooling and crosses 100 mesh sieves through being dehydrated after dry at 104 DEG C；2) it is 1 according to solid-to-liquid ratio by dewatered sludge and titanium white waste acid：1~1：3.5 are uniformly mixed, at room temperature impregnating active, according to heating rate for 15 DEG C/min activates 45~120min of charing at a temperature of 250~500 DEG C after being dried at 104 DEG C；3) 100 mesh sieves are crushed and crossed to the sample after cooling down successively with the deionized water rinse that mass fraction is 10%HCl and 70 DEG C or so after being dried at 104 DEG C to constant weight after sample is cooled down.Obtained active sludge carbon iodine sorption value is 295.90~406.40mg/g, and yield is 60.7~62.6%.The present invention prepares active sludge carbon by raw material of excess sludge and titanium white waste acid, is truly realized the treatment of wastes with processes of wastes against one another, turns waste into wealth.The invention is not only easy to operate, with low cost, and obtained active sludge carbon iodine sorption value is high, has broad application prospects.
Description
Technical field
The invention belongs to activated carbon preparation field, and in particular to a kind of utilization titanium white waste acid prepares the side of active sludge carbon
Method.
Background technology
With the quickening of urbanization process, urban wastewater treatment industry is developed rapidly.According to statistics, by 2015
Just, national cities and counties are accumulative builds up municipal sewage plant 3892, the billion cubic meter of sewage daily handling ability about 1.76.As sewage
The spin-off for the treatment of --- excess sludge, its yield is also presented rapid growth trend, according to the statistics of Chinese Ministry of Environmental Protection, China in 2014
City sludge yield is 2801.47 ten thousand tons, is increased by a year-on-year basis up to 11.57%.In face of the generation of a large amount of sludge, at present, China is universal
The processing mode for using is sanitary landfills, compost treatment, heat drying and burning disposal etc., wherein based on sanitary landfills.Largely
The landfill of sludge, not only occupies substantial amounts of land resource, meanwhile, content of organics is higher in sludge, if being filled
Treatment, is that the one kind of " resource " is wasted；At the same time, containing substantial amounts of bacterium, pathogen and heavy metal etc. in landfill sludge,
Huge ecological pollution may be brought to destroy and potential environmental risk.Therefore, develop a kind of recycling sludge and utilize technology
Become to dissolve the optimal selection of current sludge treatment predicament.
Substantial amounts of titanium white waste acid solution (sulfur acid mass concentration about 20%, Fe can be produced in the production technology of titanium dioxide2+
About 3%) mass concentration, according to statistics, often produces 1 ton of titanium dioxide, can produce 8~10 tons or so of spent acid.At present, domestic titanium dioxide
Nearly 70,000 t/a of yield, by rough estimation, national titanium powder plant at least produces the spent acid of 56~1,000,000 t every year.Quantity is so huge
If waste liquid discharge wantonly and environment will be had an immense impact on, if but through process it is up to standard after discharge can spend a large amount for the treatment of again
Expense, huge financial pressure is brought to enterprise.
The content of the invention
The problem that the deficiency and titanium white waste acid treatment existed for existing Sludge Disposal Techniques are present, the present invention provides a kind of
The method that active sludge carbon is prepared using titanium white waste acid, solving the disposal of excess sludge and the treatment of titanium white waste acid to environment and
The pressure that economy-zone is come.
To achieve these goals, the technical solution adopted by the present invention is as follows：
A kind of method that utilization titanium white waste acid prepares active sludge carbon, the technology is that titanium white waste acid is acted on into municipal sewage
The excess sludge for the treatment of plant's second pond discharge, prepares active sludge carbon, so as to reach the treatment of wastes with processes of wastes against one another, the purpose for turning waste into wealth.
Specifically include following steps：
1) second pond dewatered sludge crushed to constant weight, after cooling and cross 100 mesh sieves through being dried at 104 DEG C；
2) by step 1) in obtained sieving dewatered sludge and titanium white waste acid be 1 according to solid-to-liquid ratio：1~1：3.5 stirring mixing
Uniformly, impregnating active 24h at room temperature, according to heating rate is 15 DEG C/min in 250~500 DEG C of temperature after being dried at 104 DEG C
45~120min of the lower activation charing of degree；
3) after step 2) in mass fraction be 10%HCl rinses for several times to washing lotion after sample cooling after activated charing
Clarification, then it is neutral to be washed with 70 DEG C or so of deionized water to washing lotion；
4) by step 3) in obtained sample at 104 DEG C dry to constant weight, crush after cooling and cross 100 mesh sieves, i.e.,
Active sludge carbon is obtained.
As one kind improve, step 2) in design parameter can be optimized for：Sieving dewatered sludge and titanium white waste acid solid-to-liquid ratio
It is 1：1, heating rate is 15 DEG C/min, and carbonization temperature is 250 DEG C, and carbonization time is 45min；
As another kind improve, step 2) in design parameter can also be optimized for：Sieving dewatered sludge is consolidated with titanium white waste acid
Liquor ratio is 1：3.5, heating rate is 15 DEG C/min, and carbonization temperature is 500 DEG C, and carbonization time is 120min；
As another improvement, step 2) in design parameter can also be optimized for：Sieving dewatered sludge is consolidated with titanium white waste acid
Liquor ratio is 1：3, heating rate is 15 DEG C/min, and carbonization temperature is 350 DEG C, and carbonization time is 75min.
The advantage of the invention is that preparing active sludge carbon by raw material of excess sludge and titanium white waste acid, puzzlement has both been solved
Sewage disposal enterprise sludge treatment problem, the expense that titanium white production enterprise is greatly reduced again for titanium white waste acid disposal is opened
Branch, at the same time, both is combined for preparing active sludge carbon, realizes the treatment of wastes with processes of wastes against one another, is turned waste into wealth, and greatly reduces work
The preparation cost of property charcoal.Obtained active sludge carbon iodine sorption value be 295.90~406.40mg/g, yield be 60.7~
62.6%.
Specific embodiment
Sludge used in following embodiments in Activated Sludge Process through the sludge after sedimentation in secondary sedimentation tank.
With reference to embodiment, the present invention is further described.
Embodiment one
1) second pond dewatered sludge crushed to constant weight, after cooling and cross 100 mesh sieves through being dried at 104 DEG C；
2) it is 1 according to solid-to-liquid ratio by dewatered sludge and titanium white waste acid：1 ratio is uniformly mixed, at room temperature impregnating active
24h, then will dipping sludge through at 104 DEG C dry after according to heating rate for 15 DEG C/min activates charing at a temperature of 250 DEG C
45min；
3) with mass fraction it is that 10%HCl rinses are clarified to washing lotion for several times after the sample cooling after charing to be activated, then uses
It is neutrality that 70 DEG C or so of deionized water is washed to washing lotion；
4) obtained sample is crushed and crosses 100 mesh sieves after cooling in being dried to constant weight at 104 DEG C, that is, sludge is obtained
Activated carbon.Active sludge carbon iodine sorption value is 295.90mg/g, and yield is 62.0%.
Embodiment two
1) second pond dewatered sludge crushed to constant weight, after cooling and cross 100 mesh sieves through being dried at 104 DEG C；
2) it is 1 according to solid-to-liquid ratio by dewatered sludge and titanium white waste acid：3.5 ratios are uniformly mixed, and dipping is lived at room temperature
Change 24h, then will dipping sludge through at 104 DEG C dry after according to heating rate for 15 DEG C/min activates charcoal at a temperature of 500 DEG C
Change 120min；
3) with mass fraction it is that 10%HCl rinses are clarified to washing lotion for several times after the sample cooling after charing to be activated, then uses
It is neutrality that 70 DEG C or so of deionized water is washed to washing lotion；
4) obtained sample is crushed and crosses 100 mesh sieves after cooling in being dried to constant weight at 104 DEG C, that is, sludge is obtained
Activated carbon.Active sludge carbon iodine sorption value is 353.53mg/g, and yield is 60.7%.
Embodiment three
1) second pond dewatered sludge crushed to constant weight, after cooling and cross 100 mesh sieves through being dried at 104 DEG C；
2) it is 1 according to solid-to-liquid ratio by dewatered sludge and titanium white waste acid：3 ratios are uniformly mixed, at room temperature impregnating active
24h, then will dipping sludge through at 104 DEG C dry after according to heating rate for 15 DEG C/min activates charing at a temperature of 350 DEG C
75min；
3) with mass fraction it is that 10%HCl rinses are clarified to washing lotion for several times after the sample cooling after charing to be activated, then uses
It is neutrality that 70 DEG C or so of deionized water is washed to washing lotion；
4) obtained sample is crushed and crosses 100 mesh sieves after cooling in being dried to constant weight at 104 DEG C, that is, sludge is obtained
Activated carbon.Active sludge carbon iodine sorption value is 406.40mg/g, and yield is 62.6%.
The above embodiment of the present invention is only example to illustrate the invention, and is not to implementation of the invention
The restriction of mode.For those of ordinary skill in the field, other can also be made not on the basis of the above description
With the change and variation of form.Here all of implementation method cannot be exhaustive.It is every to belong to technical scheme
The obvious change amplified out changes row still in protection scope of the present invention.
Claims (7)
1. a kind of method that utilization titanium white waste acid prepares active sludge carbon, it is characterised in that main raw material be titanium white waste acid and
Excess sludge.
2. the method that a kind of utilization titanium white waste acid according to claim 1 prepares active sludge carbon, it is characterised in that by titanium
White spent acid acts on excess sludge, prepares active sludge carbon, comprises the following steps that：
1) second pond dewatered sludge crushed to constant weight, after cooling and cross 100 mesh sieves through being dried at 104 DEG C；
2) by step 1) in obtained sieving dewatered sludge and titanium white waste acid be 1 according to solid-to-liquid ratio：1~1：3.5 are uniformly mixed,
Impregnating active 24h at room temperature, according to heating rate is 15 DEG C/min living at a temperature of 250~500 DEG C after being dried at 104 DEG C
Change 45~120min of charing；
3) after step 2) in mass fraction be 10%HCl rinses clear to washing lotion for several times after sample cooling after activated charing
Clearly, then with 70 DEG C or so of deionized water it is neutral to wash to washing lotion；
4) by step 3) in obtained sample at 104 DEG C dry to constant weight, crush after cooling and cross 100 mesh sieves, that is, be obtained
Active sludge carbon.
3. the method for preparing active sludge carbon according to a kind of utilization titanium white waste acid described in claim 2, it is characterised in that step
2) sieving dewatered sludge and titanium white waste acid solid-to-liquid ratio are 1 in：1, heating rate is 15 DEG C/min, and carbonization temperature is 250 DEG C, during charing
Between be 45min.
4. the method for preparing active sludge carbon according to a kind of utilization titanium white waste acid described in claim 2, it is characterised in that step
2) sieving dewatered sludge and titanium white waste acid solid-to-liquid ratio are 1 in：3.5, heating rate is 15 DEG C/min, and carbonization temperature is 500 DEG C, charing
Time is 120min.
5. the method for preparing active sludge carbon according to a kind of utilization titanium white waste acid described in claim 2, it is characterised in that step
2) sieving dewatered sludge and titanium white waste acid solid-to-liquid ratio are 1 in：3, heating rate is 15 DEG C/min, and carbonization temperature is 350 DEG C, during charing
Between be 75min.
6. the method for active sludge carbon being prepared according to any described utilization titanium white waste acids of claim 1-5, it is characterised in that institute
The sludge stated is the excess sludge of municipal sewage plant's second pond discharge.
7. the method for active sludge carbon being prepared according to any described utilization titanium white waste acids of claim 1-6, it is characterised in that institute
The titanium white waste acid stated is the waste acid liquor of generation in titanium white production.
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| CN201710163677.0A CN106829956A (en) | 2017-03-19 | 2017-03-19 | A kind of method that utilization titanium white waste acid prepares active sludge carbon |
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| CN201710163677.0A CN106829956A (en) | 2017-03-19 | 2017-03-19 | A kind of method that utilization titanium white waste acid prepares active sludge carbon |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110240161A (en) * | 2019-07-10 | 2019-09-17 | 合肥工业大学 | A kind of preparation method of stalk matrix activated carbon electrode material for super capacitor that strengthening energy storage efficiency by acidic mine waste water |
Citations (3)
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| CN101391766A (en) * | 2008-10-21 | 2009-03-25 | 广西大学 | Method for preparing active carbon from pulping paper mill sludge |
| CN102745687A (en) * | 2012-06-04 | 2012-10-24 | 成都信息工程学院 | Novel method for improving city sludge active carbon performance |
| CN106140087A (en) * | 2016-07-22 | 2016-11-23 | 四川大学 | A kind of sludge activity carbon adsorbent for sewage dephosphorization and preparation method thereof |
-
2017
- 2017-03-19 CN CN201710163677.0A patent/CN106829956A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391766A (en) * | 2008-10-21 | 2009-03-25 | 广西大学 | Method for preparing active carbon from pulping paper mill sludge |
| CN102745687A (en) * | 2012-06-04 | 2012-10-24 | 成都信息工程学院 | Novel method for improving city sludge active carbon performance |
| CN106140087A (en) * | 2016-07-22 | 2016-11-23 | 四川大学 | A kind of sludge activity carbon adsorbent for sewage dephosphorization and preparation method thereof |
Non-Patent Citations (3)
| Title |
|---|
| SEBASTIEN RIO ETAL.: "Experimental design methodology for the preparation of carbonaceous sorbents from sewage sludge by chemical activation––application to air and water treatments", 《CHEMOSPHERE》 * |
| 吴娟: "城市污水处理厂污泥制备活性炭的研究", 《中国优秀博硕士学位论文全文数据库（硕士） 工程科技Ι辑》 * |
| 钱汉卿等: "《化学工业固体废物资源化技术与应用》", 28 February 2007 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110240161A (en) * | 2019-07-10 | 2019-09-17 | 合肥工业大学 | A kind of preparation method of stalk matrix activated carbon electrode material for super capacitor that strengthening energy storage efficiency by acidic mine waste water |
| CN110240161B (en) * | 2019-07-10 | 2022-07-12 | 合肥工业大学 | Preparation method of straw-based activated carbon supercapacitor electrode material for enhancing energy storage efficiency through acidic mine wastewater |
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