CN103693727B - Method for sewage neutralization and efficient cyclic utilization of waste residue - Google Patents
Method for sewage neutralization and efficient cyclic utilization of waste residue Download PDFInfo
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- CN103693727B CN103693727B CN201310697359.4A CN201310697359A CN103693727B CN 103693727 B CN103693727 B CN 103693727B CN 201310697359 A CN201310697359 A CN 201310697359A CN 103693727 B CN103693727 B CN 103693727B
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 239000010865 sewage Substances 0.000 title claims abstract description 22
- 239000002699 waste material Substances 0.000 title claims abstract description 18
- 238000006386 neutralization reaction Methods 0.000 title claims abstract description 8
- 125000004122 cyclic group Chemical group 0.000 title abstract 3
- 239000002253 acid Substances 0.000 claims abstract description 22
- 238000001354 calcination Methods 0.000 claims abstract description 20
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 39
- 239000000292 calcium oxide Substances 0.000 claims description 30
- 239000002893 slag Substances 0.000 claims description 27
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 21
- 230000018044 dehydration Effects 0.000 claims description 21
- 238000006297 dehydration reaction Methods 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 18
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 12
- 239000012065 filter cake Substances 0.000 claims description 12
- 239000003546 flue gas Substances 0.000 claims description 12
- 230000003472 neutralizing effect Effects 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 11
- 239000004927 clay Substances 0.000 claims description 11
- 239000000571 coke Substances 0.000 claims description 11
- 239000002002 slurry Substances 0.000 claims description 10
- 239000002562 thickening agent Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000002351 wastewater Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 238000005273 aeration Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000012141 concentrate Substances 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 5
- 239000011440 grout Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 abstract description 10
- 238000000746 purification Methods 0.000 abstract description 4
- 238000003723 Smelting Methods 0.000 abstract description 3
- 230000008929 regeneration Effects 0.000 abstract description 3
- 238000011069 regeneration method Methods 0.000 abstract description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract description 2
- 239000010931 gold Substances 0.000 abstract description 2
- 229910052737 gold Inorganic materials 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract 1
- 235000012255 calcium oxide Nutrition 0.000 description 27
- 238000003837 high-temperature calcination Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 3
- 229910052602 gypsum Inorganic materials 0.000 description 3
- 239000010440 gypsum Substances 0.000 description 3
- HSFWRNGVRCDJHI-UHFFFAOYSA-N Acetylene Chemical compound C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011507 gypsum plaster Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention belongs to the technical field of environment protection in gold smelting, and sewage purification treatment, recycling regeneration and comprehensive utilization of chemical industry, and especially relates to a method for sewage neutralization and efficient cyclic utilization of waste residue. The method comprises the following steps of 1) acid sewage neutralization treatment process; 2) filter pressing and dehydrating by a pressure filter; 3) baking and dehydrating by a rotary kiln; 4) roasting in a rotary calcining kiln; 5) returning back calcined product to each system. The method realizes efficient cyclic utilization in closed loop, improves comprehensive utilization of resource, not only increases economic benefits of enterprises, but also has environment-protection and social benefits.
Description
Technical field
The invention belongs to gold smelting and chemical industry the dirty water decontamination handles, resource utilization regeneration and the environmental protection technical field of comprehensive utilization, particularly relate to a kind of method utilized with waste residue efficient circulation in sewage.
Background technology
Produce in sulfuric acid process at flue gas during smelting, often produce one ton of sulfuric acid and about produce more than 100 kilogram of acid waste water, the process of acid waste water adopts lime or alkaline electro rock ballast to carry out neutralizing treatment usually, process one cube about to discharge in about 150 kilograms and waste residue (in abbreviation and slag), at present mainly as selling outside the additive cheapness of cement mill or adopting the mode process of storing up, both occupied soil, added enterprise's maintenance cost and overhead charges, also potential impact had been existed on around ecotope.Meanwhile, do not utilized with slag in discarded, be also result in the significant wastage of Mineral resources.According to investigations and document introduction, in and the main component of slag be gypsum (CaSO
42H
2o), plaster of Paris can be processed into for the production of the material of construction such as gypsum lath, building block, or for the production of cement setting retarder, but in practical application process, technical matters is complicated, standard-required is strict, and processing cost is higher, and benefit is not obvious, for this reason, research and probe is a kind of efficiently, resourcebility regeneration seems particularly important with the method for recycle, realizes turning waste into wealth, and reduces expense, improves Business Economic Benefit.
Summary of the invention
For solving the deficiencies in the prior art, the invention provides a kind of method utilized with waste residue efficient circulation in sewage.
The method utilized with waste residue efficient circulation in sewage, comprises the following steps:
1) acid effluent sewage neutralizing treatment technique
It is the acid waste water input steel basin of 5 ~ 15% by the weight percentage of sulfuric acid, the high alkalinity calcium oxide slag adding the rear output of calcining is transported via belt, control pH=7, abundant aeration in N-process, 6 ~ 8 hours time, after neutralization mass percentage be 5 ~ 8% grout enter thickener and concentrate, overflow returns relieving haperacidity cleaning section and uses, mass percentage be 30 ~ 45% high concentration slurry enter filter-press dehydration operation;
2) pressure filter filter-press dehydration
Described high concentration slurry is squeezed into pressure filter through pump and carries out squeeze and filter dehydration, obtain filter cake, filtrate returns described thickener, wherein, the weight percentage of water be 45 ~ 50% filter cake enter rotary kiln and cure operation;
3) rotary kiln cures dehydration
By the weight percentage of water be 45 ~ 50% filter cake enter rotary kiln through rotary conveyor, rotary kiln end stoving temperature 650 ~ 700 DEG C, kiln end temperature 120 ~ 150 DEG C, cures 1.5 ~ 2 hours time, and the weight percentage obtaining water after oven dry is reduced in 5 ~ 8% and slag;
4) rotary calciner roasting
The weight percentage of the water of step 3) gained is reduced in 5 ~ 8% and slag, coke, clay, alumina mix, mixed batch mixing enters high-temperature calcination kiln, temperature of kiln head 1200 DEG C, kiln end temperature 850 DEG C, calcination time 3 ~ 5 hours, in calcination process, output contains high-temperature flue gas and the high alkalinity calcium oxide slag that the weight percentage of sulfurous gas is 5 ~ 8%;
5) calcinate returns each system
By the weight percentage of sulfurous gas be 5 ~ 8% high-temperature flue gas return for gas washing in SA production; High alkalinity calcium oxide slag returns the acid effluent sewage neutralizing treatment technique of described step 1).
Above, the chemical equation related in step 4) is:
CaSO
4+2C→CaO+SO
2+CO
The chemical equation related in step 5) comprises:
2SO
2+O
2→SO
3
SO
3+H
2O→H
2SO
4
CaO+H
2sO
4(rare)+H
2o → CaSO
42H
2o
Preferably, each component of preparing burden described in step 4) and the ratio of weight and number of each component are: in and waste residue: coke: clay: alumina=90 ~ 93:2 ~ 3:2 ~ 3:5 ~ 7.
Present invention utilizes the trade waste of a large amount of discharge in preparation of ethyne by carbide process, its main component is Ca (OH)
2deng alkaline matter, can be used as the neutralizing treatment agent of acid effluent sewage, in and acid waste water after, primary water can return recycle in production technique, and the solid slag main component of discharge is gypsum (CaSO
4.2H
2o), dewater through efficient pressure filter, rotary kiln cures except cyanogen dehydration, enters rotary calciner roasting obtain unslaked lime and return acid effluent sewage neutralized system technique, the SO produced with the mix such as coke, clay, alumina
2be incorporated to flue gas acid preparing system and generate 98% sulfuric acid, realize closed circuit efficient circulation and utilize, improve comprehensive utilization of resources, not only add the economic benefit of enterprise but also there is environment protection and social benefit.
Embodiment
Be described principle of the present invention and feature below, example, only for explaining the present invention, is not intended to limit scope of the present invention.
Embodiment 1:
1) acid effluent sewage neutralizing treatment technique
The acid waste water of sulfuric acid concentration 5% enters the steel basin of 4 series connection, add the high alkalinity calcium oxide slag control PH=7 of the rear output of calcining, abundant aeration in N-process, 6 hours time, the grout of neutralization rear 5.5% enters thickener and concentrates, overflow returns relieving haperacidity cleaning section and uses, and high concentration slurry enters filter-press dehydration operation;
2) pressure filter filter-press dehydration
High concentration slurry is squeezed into pressure filter through pump and is carried out squeeze and filter dehydration, and filtrate returns thickener, and the filter cake of moisture content 45% enters rotary kiln and cures operation;
3) rotary kiln cures dehydration
The filter cake of moisture content 45% enters and enters rotary kiln through rotary conveyor, rotary kiln end stoving temperature 650 DEG C, and kiln end temperature 120 DEG C cures 1.5 hours time, and after drying, moisture is reduced in 5% and entered calcination process with slag;
4) rotary calciner roasting
Be in 5% and slag by the moisture of step 3) gained, with coke, clay, alumina mix, the ratio of weight and number of each component of preparing burden is: in and waste residue: coke: clay: alumina=90:2:2:5, mixed batch mixing is entered high-temperature calcination kiln, temperature of kiln head 1200 DEG C, kiln end temperature 850 DEG C, calcination time 3.5 hours, the high-temperature flue gas of output containing sulfurous gas 5.1% and the high alkalinity calcium oxide slag containing effective calcium oxide 92% in calcination process; Chemical equation:
CaSO
4+2C→CaO+SO
2+CO
5) calcinate returns each system
High-temperature flue gas containing sulfurous gas 5.1% returns metallurgical off-gas acid-making wet purification dust-removing process, for gas washing in SA production; High alkalinity calcium oxide slag containing effective calcium oxide 92% returns acid effluent sewage neutralizing treatment technique.Chemical equation:
2SO
2+O
2→SO
3
SO
3+H
2O→H
2SO
4
CaO+H
2sO
4(rare)+H2O → CaSO
42H
2o
Embodiment 2:
1) acid effluent sewage neutralizing treatment technique
The acid waste water of sulfuric acid concentration 10% enters the steel basin of 4 series connection, add the high alkalinity calcium oxide slag control PH=7 of the rear output of calcining, abundant aeration in N-process, 7 hours time, the grout of neutralization rear 7% enters thickener and concentrates, overflow returns relieving haperacidity cleaning section and uses, and high concentration slurry enters filter-press dehydration operation;
2) pressure filter filter-press dehydration
High concentration slurry is squeezed into pressure filter through pump and is carried out squeeze and filter dehydration, and filtrate returns thickener, and the filter cake of moisture content 48% enters rotary kiln and cures operation;
3) rotary kiln cures dehydration
The filter cake of moisture content 48% enters and enters rotary kiln through rotary conveyor, rotary kiln end stoving temperature 680 DEG C, and kiln end temperature 135 DEG C cures 1.8 hours time, and after drying, moisture is reduced in 7% and entered calcination process with slag;
4) rotary calciner roasting
Be in 7% and slag by step 3) gained moisture, with coke, clay, alumina mix, the ratio of weight and number of each component of preparing burden is: in and waste residue: coke: clay: alumina=92:2.5:2.5:6, mixed batch mixing is entered high-temperature calcination kiln, temperature of kiln head 1200 DEG C, kiln end temperature 850 DEG C, calcination time 4 hours, the high-temperature flue gas of output containing sulfurous gas 7% and the high alkalinity calcium oxide slag containing effective calcium oxide 94% in calcination process; Chemical equation:
CaSO
4+2C→CaO+SO
2+CO
5) calcinate returns each system
High-temperature flue gas containing sulfurous gas 7% returns metallurgical off-gas acid-making wet purification dust-removing process, for gas washing in SA production; High alkalinity calcium oxide slag containing effective calcium oxide 94% returns acid effluent sewage neutralizing treatment technique.Chemical equation:
2SO
2+O
2→SO
3
SO
3+H
2O→H
2SO
4
CaO+H
2sO
4(rare)+H
2o → CaSO
42H
2o
Embodiment 3:
1) acid effluent sewage neutralizing treatment technique
The acid waste water of sulfuric acid concentration 15% enters the steel basin of 4 series connection, add the high alkalinity calcium oxide slag control PH=7 of the rear output of calcining, abundant aeration in N-process, 8 hours time, the grout of neutralization rear 8% enters thickener and concentrates, overflow returns relieving haperacidity cleaning section and uses, and high concentration slurry enters filter-press dehydration operation;
2) pressure filter filter-press dehydration
High concentration slurry is squeezed into pressure filter through pump and is carried out squeeze and filter dehydration, and filtrate returns thickener, and the filter cake of moisture content 50% enters rotary kiln and cures operation;
3) rotary kiln cures dehydration
The filter cake of moisture content 50% enters and enters rotary kiln through rotary conveyor, rotary kiln end stoving temperature 699 DEG C, and kiln end temperature 150 DEG C, cures time 2 h, and after drying, moisture is reduced in 8% and entered calcination process with slag;
4) rotary calciner roasting
Be in 8% and slag by step 3) gained moisture, with coke, clay, alumina mix, the ratio of weight and number of each component of preparing burden is: in and waste residue: coke: clay: alumina=93:3:3:7, mixed batch mixing is entered high-temperature calcination kiln, temperature of kiln head 1200 DEG C, kiln end temperature 850 DEG C, calcination time 5 hours, the high-temperature flue gas of output containing sulfurous gas 7.5% and the high alkalinity calcium oxide slag containing effective calcium oxide 95.2% in calcination process; Chemical equation:
CaSO
4+2C→CaO+SO2+CO
5) calcinate returns each system
High-temperature flue gas containing sulfurous gas 7.5% returns metallurgical off-gas acid-making wet purification dust-removing process, for gas washing in SA production; High alkalinity calcium oxide slag containing effective calcium oxide 95.2% returns acid effluent sewage neutralizing treatment technique.Chemical equation:
2SO
2+O
2→SO
3
SO
3+H
2O→H
2SO
4
CaO+H
2sO
4(rare)+H
2o → CaSO
42H
2o
Embodiment 1 to 3 practices data in table 1.
Table 1: embodiment 1 to 3 practices data sheet
The foregoing is only better embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. the method utilized with waste residue efficient circulation in sewage, comprises the following steps:
1) acid effluent sewage neutralizing treatment technique
It is the acid waste water input steel basin of 5 ~ 15% by the weight percentage of sulfuric acid, add the high alkalinity calcium oxide slag of the rear output of calcining, control pH=7, abundant aeration in N-process, 6 ~ 8 hours time, after neutralization mass percentage be 5 ~ 8% grout enter thickener and concentrate, overflow returns relieving haperacidity cleaning section and uses, mass percentage be 30 ~ 45% high concentration slurry enter filter-press dehydration operation;
2) pressure filter filter-press dehydration
Described high concentration slurry is squeezed into pressure filter through pump and carries out squeeze and filter dehydration, obtain filter cake, filtrate returns described thickener, wherein, the weight percentage of water be 45 ~ 50% filter cake enter rotary kiln and cure operation;
3) rotary kiln cures dehydration
It is the filter cake feeding rotary kiln of 45 ~ 50% by the weight percentage of water, rotary kiln end stoving temperature 650 ~ 700 DEG C, kiln end temperature 120 ~ 150 DEG C, cures 1.5 ~ 2 hours time, and the weight percentage obtaining water after oven dry is reduced in 5 ~ 8% and waste residue;
4) rotary calciner calcining
By step 3) weight percentage of the water of gained reduces in 5 ~ 8% and waste residue, coke, clay, alumina mix, mixed batch mixing enters rotary calciner, temperature of kiln head 1200 DEG C, kiln end temperature 850 DEG C, calcination time 3 ~ 5 hours, in calcination process, output contains high-temperature flue gas and the high alkalinity calcium oxide slag that the weight percentage of sulfurous gas is 5 ~ 8%;
5) calcinate returns each system
By the weight percentage of sulfurous gas be 5 ~ 8% high-temperature flue gas return for gas washing in SA production; High alkalinity calcium oxide slag returns described step 1) acid effluent sewage neutralizing treatment technique.
2. in sewage according to claim 1 and the method that utilizes of waste residue efficient circulation, step 4) described in each component of batching and the ratio of weight and number of each component be: in and waste residue: coke: clay: alumina=90 ~ 93:2 ~ 3:2 ~ 3:5 ~ 7.
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|---|---|---|---|
| CN201310697359.4A CN103693727B (en) | 2013-12-18 | 2013-12-18 | Method for sewage neutralization and efficient cyclic utilization of waste residue |
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| CN103693727B true CN103693727B (en) | 2015-05-13 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104045181B (en) * | 2014-05-08 | 2016-01-20 | 昆明有色冶金设计研究院股份公司 | A kind of dirty acid treatment system and method |
| CN104046781B (en) * | 2014-06-30 | 2016-03-09 | 天津盈辉投资有限公司 | The Comprehensive utilization method of a kind of industrial acid-washed waste liquid and sulfate slag |
| CN104192970B (en) * | 2014-08-04 | 2016-03-23 | 贵州省工业固体废弃物综合利用（建材）工程技术研究中心 | Carbide slag slow-release material of a kind for the treatment of of acidic wastewater and preparation method thereof |
| CN105087937A (en) * | 2015-07-22 | 2015-11-25 | 南京格洛特环境工程股份有限公司 | Processing method for achieving reduction and resource utilization of neutral slag produced in rare earth industry |
| CN105692954A (en) * | 2016-02-14 | 2016-06-22 | 楚雄滇中有色金属有限责任公司 | Method of reducing residue yield during acidic wastewater treatment |
| CN106745637A (en) * | 2016-12-07 | 2017-05-31 | 江西稀有金属钨业控股集团有限公司 | A kind of Application way of tungsten slag, using device and purposes |
| CN112254148A (en) * | 2020-10-21 | 2021-01-22 | 重庆浩泽企业管理有限公司 | Paint residue harmless treatment process and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724405A (en) * | 2005-06-28 | 2006-01-25 | 贵州宏福实业开发有限总公司 | Process for treating and controlling acid waste water containing fluorine |
| CN101343047A (en) * | 2008-08-26 | 2009-01-14 | 山东鲁北企业集团总公司 | Improved preparation technique for preparing sulphuric acid and cement with gypsum |
| CN101811792A (en) * | 2009-02-24 | 2010-08-25 | 宝山钢铁股份有限公司 | Processing method of stainless steel cold rolling pickling wastewater |
| CN103011447A (en) * | 2012-11-28 | 2013-04-03 | 浙江和鼎铜业有限公司 | Recycling and treating method of sulfuric acid waste sewage |
| CN103058253A (en) * | 2013-01-21 | 2013-04-24 | 菲徳勒环境生态工程（苏州）有限公司 | Method for preparing gypsum by free sulfuric acid in titanium dioxide wastewater |
-
2013
- 2013-12-18 CN CN201310697359.4A patent/CN103693727B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1724405A (en) * | 2005-06-28 | 2006-01-25 | 贵州宏福实业开发有限总公司 | Process for treating and controlling acid waste water containing fluorine |
| CN101343047A (en) * | 2008-08-26 | 2009-01-14 | 山东鲁北企业集团总公司 | Improved preparation technique for preparing sulphuric acid and cement with gypsum |
| CN101811792A (en) * | 2009-02-24 | 2010-08-25 | 宝山钢铁股份有限公司 | Processing method of stainless steel cold rolling pickling wastewater |
| CN103011447A (en) * | 2012-11-28 | 2013-04-03 | 浙江和鼎铜业有限公司 | Recycling and treating method of sulfuric acid waste sewage |
| CN103058253A (en) * | 2013-01-21 | 2013-04-24 | 菲徳勒环境生态工程（苏州）有限公司 | Method for preparing gypsum by free sulfuric acid in titanium dioxide wastewater |
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