CN103435107B - Method for producing sludge conditioner by recycling wastes - Google Patents
Method for producing sludge conditioner by recycling wastes Download PDFInfo
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- CN103435107B CN103435107B CN201310380381.6A CN201310380381A CN103435107B CN 103435107 B CN103435107 B CN 103435107B CN 201310380381 A CN201310380381 A CN 201310380381A CN 103435107 B CN103435107 B CN 103435107B
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- sulfuric acid
- aluminum material
- waste sulfuric
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Abstract
The invention discloses a method for producing a sludge conditioner by recycling wastes. The method comprises the following steps of: (1) acid soluble reaction: carrying out sufficient mixing reaction on aluminum material factory alkali residues, steel material factory pickle liquor and inorganic waste sulfuric acid in a reaction kettle; (2) oxidation-reduction reaction: continuously stirring, and adding an oxidizing agent to a mixed solution for carrying out the oxidation-reduction reaction; (3) hydrolytic-polymeric reaction: stopping stirring, naturally cooling for carrying out the hydrolytic-polymeric reaction, and carrying out solid-liquid separation on undissolved substances after the undissolved substances are naturally deposited in a reaction system, wherein an obtained supernatant is a finished product. According to the invention, all used raw materials are wastes, so that the purpose of treating wastes with wastes and the purpose of integrated utilization are completely achieved.
Description
Technical field
The present invention relates to a kind of method that recycling refuse produces sludge conditioner.
Background technology
Along with industrial development, Development of China's Urbanization is accelerated further, the sludge quantity that industrial wastewater and sanitary sewage disposal produce increases day by day, the situation that the accumulation of a large amount of mud not only makes rubbish surround city anxiety makes the matter worse, and the various pollutant such as sewage, heavy metal, pathogen, foul smell in mud causes second time pollution to environment, Treatment of Sludge expense accounts for 40% ~ 50% of Sewage Plant overall running cost according to incompletely statistics, therefore the useful mud of recycling, at utmost reduces the important component part that moisture percentage in sewage sludge becomes sustainable development of China.
The method of current Treatment of Sludge has a variety of, but in order to ensure sewage qualified discharge and reduce moisture percentage in sewage sludge, nursing one's health mud and dewatering becomes the indispensable pith of sludge handling process.According to the kind of mud and the difference of character, and to the difference that Treatment of Sludge masters a skill, different experts has different selection to sludge conditioner.
Patent publication No. is CN102358679A, and name is called a kind of sludge conditioner and uses the deep dehydration method of sludge conditioner.The method by percentage by weight be 40 ~ 70% magnesia and the percentage by weight lime stone that is 30 ~ 40% pulverize after mix, to send in Muffle furnace 900 ~ 1000 DEG C of calcinations 1 ~ 2 hour, sludge conditioner is made in cooling.Although the raw material that this invention uses is relatively more cheap, preparation method not only complexity but also power consumption is quite large, and therefore the sludge conditioner cost of this invention is higher, and mud increase-volume is also larger.
Patent publication No. is CN103011548A, name is called the conditioning of a kind of combined type conditioning mud and carries out mud dewatering method, after this invention uses traditional chemical sludge conditioner (PAMC and aluminium polychloride) modified, then it is modified to carry out mud with wood chip.Although this invention uses wood chip to carry out, mud is modified has certain novelty, and the modified process cost of whole mud is very high, and mud increase-volume is also larger.
Patent publication No. is CN101851054A, name is called that sludge dewatering is nursed one's health and its preparation method and application, polyacrylamide, carboxymethyl cellulose, lignin is utilized to be made into sludge conditioner, this invention collocation method is loaded down with trivial details not easy to operate, raw material sources are limited, and high cost and product shelf life is short etc. that shortcoming is not suitable for extensive Treatment of Sludge, market utilizes limited space.
Patent publication No. is CN101851053A, name is called a kind of inorganic composite sludge dehydration conditioner and application thereof, utilize neopelex and NaOH is composite forms, although this invention production technology is simple, but NaOH use amount is larger, have very high requirement to equipment alkali resistance, use neopelex more expensive in addition, the supernatant SS after press filtration is higher.The cost higher due to it and limited flocculating property, can only be used for the specific sludge conditioning of smaller portions.
Patent publication No. is CN102452782A, and name is called the inorganic composite conditioner of high-effective sludge dehydration.Patent publication No. is CN1986788A, and name is called chemical amendment and the dewatering thereof of sludge dewatering.Patent publication No. is CN101633549A, and name is called a kind of sludge conditioner and mud dewatering method thereof etc., all needs to add the calcium salt conditioning of mud pH such as lime stone.Not only cost is all higher for the sludge conditioner of these inventions, and is also a kind of consumption to natural resources such as limestone.Totally ten eight fundamental state policies of promoting a conservation culture greatly in not meeting.
Summary of the invention
A kind of recycling refuse is the object of the present invention is to provide to produce the method for sludge conditioner.
The technical solution used in the present invention is:
Recycling refuse produces a method for sludge conditioner, comprises the following steps:
1) acid-soluble reaction: in a kettle., is uniformly mixed reaction fully by aluminum material factory's alkaline residue, steel factory pickle liquor, mineral waste sulfuric acid;
2) redox reaction: continue to stir, add oxidant and carry out redox reaction in mixed liquor;
3) hydrolytic-polymeric reaction: stop stirring, Temperature fall is hydrolyzed polymerisation, and carry out Separation of Solid and Liquid after insoluble matter natural sedimentation in reaction system, gained supernatant is finished product.
In step 1), aluminum material factory's alkaline residue, steel factory pickle liquor mass ratio m
1: m
2=C
1a
2: A
1, the quality m of Waste Sulfuric Acid
3=C
2(m
1+ m
2)/A
3, m
1, m
2, m
3be respectively the quality of aluminum material factory's alkaline residue, steel factory pickle liquor, Waste Sulfuric Acid, A
1for Al in aluminum material factory's alkaline residue
2o
3mass percent, A
2for mass percent ferrous in steel factory pickle liquor, A
3for H in Waste Sulfuric Acid
2sO
4mass percent, C
1be 0.1 ~ 0.25, C
2be 0.05 ~ 0.25.
The time of the reaction of step 1) is 0.5-4h.
Step 2) in, described oxidant is at least one in sodium chlorate, hydrogen peroxide, chlorine, oxygen, clorox.
Step 2) in, the time of redox reaction is 30min-1h.
In step 3), the time of hydrolytic-polymeric reaction is 1-24h.
The invention has the beneficial effects as follows: the present invention is with aluminum material factory's alkaline residue, steel factory pickle liquor, the waste resources such as mineral waste sulfuric acid are raw material, produce conditioning mud effective, the poly-ferric sulfate chloride aluminium that cost is extremely low, achieves the treatment of wastes with processes of wastes against one another, has carried out sufficient recycling to resource, meet sustainable development idea, have good Social benefit and economic benefit.
The all raw material used in the present invention is discarded object, fullys meet the treatment of wastes with processes of wastes against one another, the object of comprehensive utilization.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described further:
embodiment 1:
(1) Al in aluminum material factory's alkaline residue is detected
2o
3mass percent be 10%, ferrous (with FeCl in steel factory acid waste water
2meter) mass percent be that namely 25%(detects Fe total in steel factory acid waste water
2+mass percent is a, is scaled FeCl
2, a × M(FeCl
2)/M(Fe
2+)=25wt%), H in Waste Sulfuric Acid
2sO
4in mass percent be 80%;
(2) mixer on reactor is started, under the condition stirred, first add steel factory pickle liquor, then while add the alkaline residue of aluminum material factory, while drip mineral waste sulfuric acid, wherein steel factory pickle liquor 20 tons, aluminum material factory's alkaline residue weight is 8 tons, mineral waste sulfuric acid weight is 4.8 tons, drips rear stirring reaction 30 minutes.
(3) continue to stir, add 0.7 ton, sodium chlorate and carry out redox reaction in mixed liquor, react after 30 minutes and leave standstill, natural sedimentation carries out Separation of Solid and Liquid in 1 hour; Gained supernatant is liquid polymeric chloro sulphuric acid iron aluminium; The Al of liquid polymeric chloro sulphuric acid iron aluminium after testing
2o
3mass percent is 2.35wt%, Fe
3+(with FeCl
3meter) mass percent is total Fe that namely 19.05wt%(detects
3+mass percent is b, is scaled FeCl
3, b × M(FeCl
3)/M(Fe
3+)=19.05wt%), the degree of polymerization is 8%.
embodiment 2:
(1) Al in aluminum material factory's alkaline residue is detected
2o
3mass percent be 15%, ferrous (with FeCl in steel factory acid waste water
2meter) mass percent be 28%, H in Waste Sulfuric Acid
2sO
4in mass percent be 80%;
(2) mixer on reactor is started, under the condition stirred, first add steel factory pickle liquor, then while add the alkaline residue of aluminum material factory, while drip mineral waste sulfuric acid, wherein steel factory pickle liquor 20 tons, aluminum material factory's alkaline residue weight is 6.8 tons, mineral waste sulfuric acid weight is 5.85 tons, drips rear stirring reaction 30 minutes.
(3) continue to stir, add 0.785 ton, sodium chlorate and carry out redox reaction in mixed liquor, react after 30 minutes and leave standstill, natural sedimentation carries out Separation of Solid and Liquid in 1 hour; Gained supernatant is liquid polymeric chloro sulphuric acid iron aluminium; The Al of liquid polymeric chloro sulphuric acid iron aluminium after testing
2o
3mass percent is 3.02wt%, Fe
3+(with FeCl
3meter) mass percent is 21.4wt%, the degree of polymerization is 8.2%.
contrast test example:
Using capillary water absorbing time (CST) as reaction sludge conditioner to sludge conditioning performance indications, the liquid polymeric chloro sulphuric acid iron aluminium prepared with enforcement 2, commercial liquid ferric trichloride (FeCl
3: 24.4 wt%)+lime two kinds of sludge conditioner schemes carry out contrast test to Foshan municipal sewage plant concentration basin mud, and concrete steps are as follows:
(1) get the coagulation jar of 6 1000ml, pour 1000ml Foshan municipal sewage plant concentration basin mud into;
(2) the liquid polymeric chloro sulphuric acid iron aluminium (Al of 5000ppm, 8000 ppm, 10000 ppm embodiments 2 is added in each beaker respectively
2o
3: 3.02wt%, Fe
3+(with FeCl
3meter): 21.4 wt%), 5000ppm, 8000 ppm, 10000 ppm commercial liquid ferric trichloride (FeCl
3: 24.4 wt%);
(3) after adding sludge conditioner, start coagulation stirrer and stir, stir after 30s with 300r/min, add in upper step in the beaker of commercial liquid ferric trichloride and add appropriate lime to continue to stir 30s to be measured;
(4) after sludge agitation, add in CST circular groove immediately, open CST analyzer, start timing, when after timer expiration, the time that CST instrument shows is the CST of mud;
(5) step 3,4 is repeated until six groups of experiments all complete.
CST test data is in table 1, and test data shows, relatively traditional sludge conditioner (ferric trichloride), liquid polymeric chloro sulphuric acid iron aluminium of the present invention, and conditioning mud effect is more obvious, changes less to sludge pH.
table 1: two kinds of sludge conditioner lignin-sludge effect data contrast tables
Claims (1)
1. recycling refuse produces a method for sludge conditioner, it is characterized in that: comprise the following steps:
1) acid-soluble reaction: in a kettle., is uniformly mixed reaction fully by aluminum material factory's alkaline residue, steel factory pickle liquor, mineral waste sulfuric acid;
2) redox reaction: continue to stir, add oxidant and carry out redox reaction in mixed liquor;
3) hydrolytic-polymeric reaction: stop stirring, Temperature fall is hydrolyzed polymerisation, and carry out Separation of Solid and Liquid after insoluble matter natural sedimentation in reaction system, gained supernatant is finished product;
In step 1), aluminum material factory's alkaline residue, steel factory pickle liquor mass ratio m
1: m
2=C
1a
2: A
1, the quality m of Waste Sulfuric Acid
3=C
2(m
1+ m
2)/A
3, m
1, m
2, m
3be respectively the quality of aluminum material factory's alkaline residue, steel factory pickle liquor, Waste Sulfuric Acid, A
1for Al in aluminum material factory's alkaline residue
2o
3mass percent, A
2for mass percent ferrous in steel factory pickle liquor, A
3for H in Waste Sulfuric Acid
2sO
4mass percent, C
1be 0.1 ~ 0.25, C
2be 0.05 ~ 0.25; The time of the reaction of step 1) is 0.5-4h; Step 2) in, described oxidant is at least one in sodium chlorate, chlorine, oxygen, clorox; Step 2) in, the time of redox reaction is 30min-1h; In step 3), the time of hydrolytic-polymeric reaction is 1-24h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310380381.6A CN103435107B (en) | 2013-08-27 | 2013-08-27 | Method for producing sludge conditioner by recycling wastes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310380381.6A CN103435107B (en) | 2013-08-27 | 2013-08-27 | Method for producing sludge conditioner by recycling wastes |
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|---|---|
| CN103435107A CN103435107A (en) | 2013-12-11 |
| CN103435107B true CN103435107B (en) | 2015-04-29 |
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ID=49688860
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|---|---|---|---|
| CN201310380381.6A Active CN103435107B (en) | 2013-08-27 | 2013-08-27 | Method for producing sludge conditioner by recycling wastes |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104986805A (en) * | 2015-06-23 | 2015-10-21 | 河北冀泽生物科技有限公司 | Production method for polyferric chloride sulfate |
| CN110127774A (en) * | 2019-06-13 | 2019-08-16 | 常州润德石墨科技有限公司 | Utilize the method for preparing Polyferric Sulfate Flocculants with sludge in acid cleaning of steel tube |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1203194A (en) * | 1998-07-13 | 1998-12-30 | 彭继增 | Process for producing poly-aluminum chloride and compound poly-iron-aluminum chloride |
| CN101074128A (en) * | 2007-06-26 | 2007-11-21 | 上海大学 | Production of polymerized ferric-aluminum chloride composite coagulating agent |
| CN102515330A (en) * | 2012-01-13 | 2012-06-27 | 重庆大学 | Preparation method of polymeric aluminum ferric sulfate flocculating agent (liquid) |
-
2013
- 2013-08-27 CN CN201310380381.6A patent/CN103435107B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1203194A (en) * | 1998-07-13 | 1998-12-30 | 彭继增 | Process for producing poly-aluminum chloride and compound poly-iron-aluminum chloride |
| CN101074128A (en) * | 2007-06-26 | 2007-11-21 | 上海大学 | Production of polymerized ferric-aluminum chloride composite coagulating agent |
| CN102515330A (en) * | 2012-01-13 | 2012-06-27 | 重庆大学 | Preparation method of polymeric aluminum ferric sulfate flocculating agent (liquid) |
Non-Patent Citations (2)
| Title |
|---|
| "利用酸洗废液制备复合混凝剂及其应用实验研究";席改卿等;《河北大学学报(自然科学版)》;20060930;第26卷(第5期);第515-519页 * |
| "工业废酸与高铁赤泥制取聚合氯化铝铁的实验研究";王海峰等;《贵州大学学报(自然科学版)》;20060831;第23卷(第3期);第323-325页 * |
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| CN103435107A (en) | 2013-12-11 |
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Address after: 526238 Sha Lek Industrial Park, hi tech Development Zone, Guangdong, Zhaoqing Patentee after: ZHAOQING LINGYU ENVIRONMENTAL PROTECTION INDUSTRIAL CO.,LTD. Address before: 526238 Sha Lek Industrial Park, hi tech Development Zone, Guangdong, Zhaoqing Patentee before: ZHAOQING LINGYU ENVIRONMENTAL PROTECTION CO.,LTD. |
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Effective date of registration: 20180118 Address after: 511400 Guangzhou City, Guangzhou, Guangdong, Panyu District Panyu Avenue North 555 Tianan energy conservation science and Technology Park, one of the development building 919 Patentee after: GUANGZHOU BOFANG ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. Address before: 526238 Sha Lek Industrial Park, hi tech Development Zone, Guangdong, Zhaoqing Patentee before: ZHAOQING LINGYU ENVIRONMENTAL PROTECTION INDUSTRIAL CO.,LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 511400 one of 919 Tianan energy saving science and technology park development building, 555 North Panyu Avenue, Panyu District, Guangzhou City, Guangdong Province Patentee after: Guangdong Bofang Environmental Protection Technology Group Co.,Ltd. Address before: 511400 one of 919 Tianan energy saving science and technology park development building, 555 North Panyu Avenue, Panyu District, Guangzhou City, Guangdong Province Patentee before: GUANGZHOU BOFANG ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. |