CN1328186C - New processing method for indusrial toxic harmful waste liquid - Google Patents
New processing method for indusrial toxic harmful waste liquid Download PDFInfo
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- CN1328186C CN1328186C CNB2005100122620A CN200510012262A CN1328186C CN 1328186 C CN1328186 C CN 1328186C CN B2005100122620 A CNB2005100122620 A CN B2005100122620A CN 200510012262 A CN200510012262 A CN 200510012262A CN 1328186 C CN1328186 C CN 1328186C
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Abstract
The present invention relates to a novel treating method for industrial toxic and harmful waste liquid, which has the following technologic processes: toxic and harmful waste liquid is neutralized, filtered and prepared in a mixing mode in a pretreatment center so that the toxic and harmful waste liquid has a proper pH value and a proper heat value; the toxic and harmful waste liquid is incinerated and destroyed in a rotary kiln of cement, or is used as producing substitute fuel for use. The treating method has the advantages that the rotary kiln is used for incinerating and treating industrial waste liquid to be transported by pump force; the industrial waste liquid is directly sprayed into the rotary kiln of the cement by a multi-passage burner for realizing thorough incinerating treatment. Organic substances in the waste liquid are thoroughly incinerated at high temperature (1750 DEG C); a small quantity of inorganic substances contained in the waste liquid are used as the raw material for producing the cement; finally, the inorganic substances enter cement products. The treating method has the advantages of continuous and automatic process, safety, reliability and no secondary pollution.
Description
Technical field
The present invention relates to a kind of method for treating waste liquid, be specifically related to a kind of treatment process of indusrial toxic harmful waste liquid.
Background technology
The millions of ton of the waste liquid that China produces in industrial production every year mainly is spent acid solution, waste lye, also comprises part mineral waste oil, useless oil in water emulsion, useless clean-out system, spent organic solvent etc.These waste liquids are not only the waste of resource, and have caused the serious environmental pollution.Data shows, the spent acid of Beijing's year generation at present, waste lye are about about 70,000 tons, mainly result from the industrial chemical manufacturing, industries such as the acid etching of metal and other goods, rust cleaning (oil), cleaning and printing and dyeing, plating, wherein based on spent acid solution, it has following several big characteristics: (1) concentration height, and kind is numerous, and sulfuric acid, nitric acid, hydrofluoric acid, hydrochloric acid, bromic acid, cyanic acid, arsenic acid etc. are arranged; (2) be dissolved with a large amount of oil substances in the spent acid solution; (3) spent acid solution suspended particle content is big especially, and irritating smell is strong; (4) complicated component, heavy metal, toxic compounds content height.At present, general sewage water treatment method can't carry out good treatment to it.Because these spent acid solutions and waste lye do not have good special disposal method.Carried out partially disposed though have on a small quantity with the name that reclaims, utilize again, a large amount of then without any processing, directly enter water body, environment has been caused serious pollution.
Summary of the invention
Purpose of the present invention mainly is to solve spent acid solution, the reluctant problem of waste lye, adopt innovative thinking, after spent acid solution, the rational pre-treatment of waste lye process, can spray into high temperature destruction in the cement kiln separately, after also can being mixed simultaneously with mineral waste oil, useless oil in water emulsion, useless clean-out system, spent organic solvent etc., make it to have certain calorific value, burn destruction at cement kiln.
The technical scheme that realizes the object of the invention is to need the poisonous and harmful industrial effluent at the process neutralization of pre-treatment center, filtration, mixing preparation, make it have suitable pH value and calorific value, can in cement rotary kiln, burn the fuel substitute use that destruction or conduct are produced; It must be by following technological process:
(1) under the normal pressure, will carry out neutralization reaction in neutralization tank with the spent acid solution of stirrer, the spent acid solution in the salkali waste flow container, waste lye at the pre-treatment center, the neutralization reaction temperature is controlled at 20-95 degree centigrade, the main chemical reactions equation:
2HCL+Ca(OH)
2＝2H
2O+CaCL
2
H
2SO
4+Ca(OH)
2＝2H
2O+CaSO
4。↓
(2) carry out in and the time, according to different potential of hydrogen situations, add Ca (OH) by acid, alkali adding set
2Solution or spent acid make the industrial effluent after the processing have weakly alkaline, and pH value is controlled at 8-10.
(3) waste liquid after the neutralization reaction being sent into the filter press device, is to carry out press filtration under the 10-14MPa condition in operating pressure, and liquid enters liquid waste storage pool after the press filtration, and solid is transferred to solid-state castoff pre-treatment center.
(4) waste liquid after the neutralization reaction is mixed with mineral waste oil, useless oil in water emulsion, useless clean-out system, spent organic solvent etc. under the situation of guaranteeing not have untoward reaction and hazardous material to produce, adjust the calorific value of waste liquid, the calorific value that the industrial effluent after the final allocation processing is had is 2400kJ/kg-20000kJ/kg.
(5) will allocate liquid waste behind the calorific value is delivered to stove tailing column top of the trellis by pump power high-order hold-up vessel, inject in the cement rotary kiln kiln by the spray gun of kiln hood burner and to burn, when producing cement, the kiln hood gas temperature is stabilized in 1750 ℃, and main chemical reactions is:
H2O (1750 ℃ of high temperature) → H2O steam
Flammable organism (burning) → H2O+CO2+ heat
Inorganics (calcareous, siliceous, irony, aluminium matter) → Dicalcium Phosphate (Feed Grade)+tricalcium silicate+tricalcium aluminate+tetracalcium aluminoferrite
(annotate: iron, calcium, aluminium, silicon are the element that constitutes cement, at high temperature participate in the reaction that cement clinker forms, and finally enter cement products.)
Advantage of the present invention is to utilize rotary kiln incineration disposal of commercial waste liquid to adopt pump power to carry, and in multicenter combustor directly sprays into the novel rotary type incinerator, can realize thorough burning disposal; Process is continuous, automatic, safe and reliable, does not have secondary pollution.Organism in the waste liquid is at high temperature thoroughly destroyed by fire, and the small amounts of inorganic thing that contains in the waste liquid finally enters cement products as the raw material of manufacture of cement.
Description of drawings
Below in conjunction with accompanying drawing inventive embodiments is described further:
Fig. 1 is an indusrial toxic harmful waste liquid processing technological flow synoptic diagram.
Embodiment
Embodiment 1: as shown in Figure 1, be provided with spent acid solution, the waste lye neutralization tank 1 of band stirrer at the pre-treatment center, and Ca (OH) is set
2Adding set 2 and spent acid adding set 3 should be according to the different pH values situations of waste liquid, an amount of spent acid solution or the Ca (OH) of adding in neutralization tank 4
2Slurry makes spent acid solution carry out neutralization reaction under normal pressure, and the neutralization reaction temperature is controlled at 80 ℃, makes the industrial effluent after the processing have weakly alkaline, PH=9, and the main chemical reactions equation:
2HCL+Ca(OH)
2＝2H
2O+CaCL
2
H
2SO
4+Ca(OH)
2＝2H
2O+CaSO
4↓
Waste liquid after the neutralization reaction is sent into filter press device 5, is to carry out press filtration under the 12MPa condition in operating pressure, and liquid enters the liquid waste pond 6 that is mixed after the press filtration;
Waste liquid after the neutralization being mixed under the situation of guaranteeing not have untoward reaction and hazardous material to produce with in the ponds 6 that are being mixed such as mineral waste oil, useless oil in water emulsion, useless clean-out system, spent organic solvent, is adjusted the calorific value of waste liquid; The calorific value that industrial effluent after the final allocation processing has is 12000kJ/kg, can guarantee the vaporization of industrial effluent self, thereby alleviate the influence of the burning of industrial effluent to the cement rotary kiln incineration system greatly.
At last, the above-mentioned waste liquid of deployed calorific value is delivered to the high-order hold-up vessel of stove tailing column top of the trellis by pump power, injects in the cement rotary kiln by the spray gun of furnace head burner and burn, main chemical reactions is:
H2O (1750 ℃ of high temperature) → H2O steam
Flammable organism (burning) → H2O+CO2+ heat
Inorganics (calcareous, siliceous, irony, aluminium matter) → Dicalcium Phosphate (Feed Grade)+tricalcium silicate+tricalcium aluminate+tetracalcium aluminoferrite.
Embodiment 2: as shown in Figure 1, be provided with spent acid solution, the waste lye neutralization tank 1 of band stirrer at the pre-treatment center, and Ca (OH) is set
2Adding set 2 and spent acid adding set 3 should be according to the different pH values situations of waste liquid, an amount of spent acid solution or the Ca (OH) of adding in neutralization tank 4
2Slurry makes spent acid solution carry out neutralization reaction under normal pressure, and the neutralization reaction temperature is controlled at 95 ℃, makes the industrial effluent after the processing have weakly alkaline, PH=8.5, and the main chemical reactions equation:
2HCL+Ca(OH)
2＝2H
2O+CaCL
2
H
2SO
4+Ca(OH)
2＝2H
2O+CaSO
4↓
Waste liquid after the neutralization reaction is sent into filter press device 5, is to carry out press filtration under the 14MPa condition in operating pressure, and liquid enters the liquid waste pond 6 that is mixed after the press filtration;
Waste liquid after the neutralization being mixed under the situation of guaranteeing not have untoward reaction and hazardous material to produce with in the ponds 6 that are being mixed such as mineral waste oil, useless oil in water emulsion, useless clean-out system, spent organic solvent, is adjusted the calorific value of waste liquid; The calorific value that industrial effluent after the final allocation processing has is 20000kJ/kg, can burn to destroy also in cement rotary kiln and use as the fuel substitute of producing.
At last, the above-mentioned waste liquid of deployed calorific value is delivered to the high-order hold-up vessel of stove tailing column top of the trellis by pump power, injects in the cement rotary kiln by the spray gun of furnace head burner and burn, main chemical reactions is:
H2O (1750 ℃ of high temperature) → H2O steam
Flammable organism (burning) → H2O+CO2+ heat
Inorganics (calcareous, siliceous, irony, aluminium matter) → Dicalcium Phosphate (Feed Grade)+tricalcium silicate+tricalcium aluminate+tetracalcium aluminoferrite.
Claims (6)
1. the treatment process of an indusrial toxic harmful waste liquid, it is characterized in that poisonous and harmful industrial effluent (being mainly spent acid solution, waste lye) is passed through neutralization reaction, filters and carry out mixing preparation at the pre-treatment center, make it have suitable pH value and calorific value, can in cement rotary kiln, burn or use as the fuel substitute of producing.
2. the treatment process of a kind of indusrial toxic harmful waste liquid as claimed in claim 1, it is characterized in that described pre-treatment center is provided with spent acid solution, the waste lye neutralization tank of band stirrer, and acid, alkali adding set be set, under normal pressure, in neutralization tank, spent acid solution, waste lye are carried out neutralization reaction, the neutralization reaction temperature is controlled at 20-95 degree centigrade, the main chemical reactions equation:
2HCL+Ca(OH)
2＝2H
2O+CaCL
2
H
2SO
4+Ca(OH)
2＝2H
2O+CaSO
4↓
3. the treatment process of a kind of indusrial toxic harmful waste liquid as claimed in claim 1 when it is characterized in that described neutralization reaction, according to different potential of hydrogen situations, adds spent acid or Ca (OH) automatically
2Solution makes the industrial effluent after the processing have weakly alkaline, and pH value is controlled at 8-10.
4. the treatment process of a kind of indusrial toxic harmful waste liquid as claimed in claim 1, it is characterized in that described filtering method is that the waste liquid after the neutralization is sent into the filter press device, in operating pressure is to carry out press filtration under the 10-14MPa condition, liquid enters liquid waste storage pool after the press filtration, and solid is transferred to solid-state castoff pre-treatment center.
5. the treatment process of a kind of indusrial toxic harmful waste liquid as claimed in claim 1, it is characterized in that described mixing preparation is that the waste liquid after the neutralization is mixed under the situation that does not have untoward reaction and hazardous material to produce mutually guaranteeing, adjust the calorific value of waste liquid, be 2400kJ/kg-20000kJ/kg.
6. a kind of new processing method for indusrial toxic harmful waste liquid as claimed in claim 1, it is characterized in that the described waste liquid be about to deployed calorific value of burning is delivered to the high-order hold-up vessel of stove tailing column top of the trellis by pump power, injects in the cement rotary kiln by the spray gun of furnace head burner and burns in cement rotary kiln; Main chemical reactions is:
H
2O (1750 ℃ of high temperature)-→ H
2The O steam
Flammable organism (burning)-→ H
2O+CO
2+ heat
Inorganics (calcareous, siliceous, irony, aluminium matter) → Dicalcium Phosphate (Feed Grade)+tricalcium silicate+tricalcium aluminate+tetracalcium aluminoferrite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100122620A CN1328186C (en) | 2005-07-28 | 2005-07-28 | New processing method for indusrial toxic harmful waste liquid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100122620A CN1328186C (en) | 2005-07-28 | 2005-07-28 | New processing method for indusrial toxic harmful waste liquid |
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|---|---|
| CN1749181A CN1749181A (en) | 2006-03-22 |
| CN1328186C true CN1328186C (en) | 2007-07-25 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560069B (en) * | 2009-05-25 | 2012-11-07 | 北京水泥厂有限责任公司 | Method for treating industrial waste acid |
| CN103453533B (en) * | 2013-08-28 | 2016-01-13 | 大连东泰产业废弃物处理有限公司 | A kind of organic liquid waste and cement kiln coexist the preprocess method put |
| CN106257139B (en) * | 2016-08-01 | 2018-11-06 | 北京北控环保工程技术有限公司 | Danger wastes pretreating process |
| CN106066041B (en) * | 2016-08-01 | 2018-10-12 | 北京北控环保工程技术有限公司 | Danger wastes pretreatment system |
| CN106219717A (en) * | 2016-08-12 | 2016-12-14 | 北京金隅北水环保科技有限公司 | The method processing spent acid |
| CN106247351A (en) * | 2016-08-30 | 2016-12-21 | 湖南循安环境资源技术有限公司 | Liquid waste and the multi-functional dual firing chamber of percolate and methods and applications thereof can be processed |
| CN109621812A (en) * | 2018-12-24 | 2019-04-16 | 北京生态岛科技有限责任公司 | A kind of method and system preparing oil emulsion using high heating value wastes |
| CN114110623A (en) * | 2021-11-09 | 2022-03-01 | 上海天汉环境资源有限公司 | Ammonia fluoride waste liquid incineration treatment method and treatment device thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068090A (en) * | 1992-05-14 | 1993-01-20 | 周开庆 | Method for treating sucrose waste liquid |
| CN1259638A (en) * | 2000-01-31 | 2000-07-12 | 上海万安企业总公司 | Method of treating dangerous waste by utilizing cement rotary kiln |
| CN1342865A (en) * | 2000-09-08 | 2002-04-03 | 浙江巨圣氟化学有限公司 | Method for treating organic halide by plasma incineration and industrial device |
-
2005
- 2005-07-28 CN CNB2005100122620A patent/CN1328186C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1068090A (en) * | 1992-05-14 | 1993-01-20 | 周开庆 | Method for treating sucrose waste liquid |
| CN1259638A (en) * | 2000-01-31 | 2000-07-12 | 上海万安企业总公司 | Method of treating dangerous waste by utilizing cement rotary kiln |
| CN1342865A (en) * | 2000-09-08 | 2002-04-03 | 浙江巨圣氟化学有限公司 | Method for treating organic halide by plasma incineration and industrial device |
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| CN1749181A (en) | 2006-03-22 |
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Effective date of registration: 20081219 Address after: Beijing City, Changping District science and Technology Park Bai Fu Quan Lu Beikong science and Technology Building Room 608 Patentee after: Beijing Jinyu Hongshulin Environment Protecting Techn Co., Ltd. Address before: Beijing City, Changping District science and Technology Park Bai Fu Quan Lu Beikong science and Technology Building Room 1203 Patentee before: Hongshulin Environment Protection Technology Engineering Co., Ltd., Beijing |
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Owner name: BEIJING JINYU MANGROVE ENVIRONMENTAL TECHNOLOGY LI Free format text: FORMER OWNER: BEIJING MANGROVES ENVIRONMENTAL TECHNOLOGY ENGINEERING CO., LTD. Effective date: 20081219 |