CN106554105A - A kind of method that hydrochloric acid pickling waste liquor processes sewage - Google Patents
A kind of method that hydrochloric acid pickling waste liquor processes sewage Download PDFInfo
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- CN106554105A CN106554105A CN201510623083.4A CN201510623083A CN106554105A CN 106554105 A CN106554105 A CN 106554105A CN 201510623083 A CN201510623083 A CN 201510623083A CN 106554105 A CN106554105 A CN 106554105A
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- hydrochloric acid
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Abstract
The invention belongs to technical field of sewage, more particularly to a kind of method that hydrochloric acid pickling waste liquor processes sewage, comprise the following steps：W-response is carried out at normal temperatures, is 1. added reactant 1 and is stirred according to the pollution level of micro- pollution sewage；2. with reactant 2 is added according to the pH value for having added 1 sewage of reactant, reactant 2 is carried out reacting with reactant 1 and lifting sewage pH value, is stirred after being put into reactant 2, and the reaction time is 10 minutes；3. add in water and reactant 3 stir, flocculation degraded 2 hours, i.e. sewage disposal are completed.The whole processing step advantages of simple of the present invention, treatment cost are low, and regulation effect is good, 100% regeneration of pickle liquor, it is easy to control, process time is short.
Description
Technical field
The invention belongs to technical field of sewage, more particularly to a kind of method that hydrochloric acid pickling waste liquor processes sewage.
Background technology
Environment " give birth to because of water, emerging because of water ", however as economic fast development and the quickening of urbanization process, China is permitted
Many In Urban Water Quality pollutions and Ecological degenerative problem are very prominent, and oxygen-consuming organic pollution and nitrogen and phosphorus salt content are high,
Even occur in that seasonality with perennially black and odorous water phenomenon.Therefore, solve municipal sewage pollution, recover the ecological of environment and
Social function problem, remains one of mission critical urgently to be resolved hurrily during many urban sustainable developments.Therefore pass through technology
Innovation, is processed sewage, has both solved pickling iron and steel company using hydrochloric acid pickling waste liquor, frerrous chloride, calcium oxide, NaOH
Environmental pollution, and saved substantial amounts of resource for society, be truly realized the treatment of wastes with processes of wastes against one another, with huge economic benefit and society
Benefit.The main cause that micro- pollution sewage fails to obtain extensive treatments is to suffer from the drawback that：
1st, processing needs for sewage to introduce sewage treatment plant, is re-introduced into fresh water source, has the disadvantage to introduce cost and processing cost is high.
2nd, technology of biological membrane is a kind of " apposition growth type " sewage water treatment method, but processing cost is high, it is difficult to extensive utilization.
3rd, chemical method is mainly enhanced flocculation.The chemical agent for being used mainly has polyacrylamide, polymeric ferric salt, polymeric aluminum
The flocculants such as salt, it is therefore intended that improve water transparency.But, the chemical agent high cost adopted by the above, aluminium salt inorganic agent
Secondary pollution can also be produced.
The content of the invention
Present invention is primarily targeted at solving problems of the prior art, there is provided a kind of 100% regeneration of pickle liquor,
Processing cost is cheap, the processing method of micro- pollution sewage that sewage original place is processed, processing procedure is simple and safe.
Problem solved by the invention employs the following technical solutions to realize：
A kind of method that hydrochloric acid pickling waste liquor processes sewage, including：1. disposed of in its entirety process is carried out at normal temperatures, it is known that iron and steel acid
It is free hydrochloric acid content 2-12% to wash waste liquid composition, and frerrous chloride content is 15-33%, will be carried out in pickle liquor input reactor
Stirring, adds frerrous chloride, water, ferrous sulfate, pickle liquor total iron content is transferred to 8-11%, obtain after dissolving (frerrous chloride,
Ferrous sulfate, hydrochloric acid, water) solution as reactant 1, chemical formula is FeCl2+FeSO4+HCL+H2O, and addition weight is dirt
10000 parts of water, reactant 1 are 1-15 parts；2. calcium oxide 1-3 parts, NaOH 1-3 parts are added into agitator, stirring is equal
Even to obtain reactant 2, chemical formula is CaO+NaOH, and the addition of reactant 2 is that the sewage PH value adjusted after adding reactant 1 reaches
To between 7-9, being put into sewage uniform stirring after reactant 2, the reaction time is 10 minutes, and the purpose for adding reactant 2 exists
Free acid in neutralization pickle liquor, reaction equation are CaO+H2O=Ca (OH) 2, Ca (OH) 2+2HCl=CaCl2+2H2O,
NaOH+HCl=NaCl+H2O, because hydrochloric acid is a small amount of, hydrochloric acid after exhausting reacts frerrous chloride, ferrous sulfate for hydrogen
Ferrous oxide, reaction equation be FeCl2+Ca (OH) 2=CaCl2+Fe (OH) 2 ↓, FeCl2+2NaOH=2NaCl+
Fe (OH) 2 ↓, 2NaOH+FeSO4=Na2SO4+Fe (OH) 2 ↓, Ca (OH) 2+FeSO4=CaSO4+Fe (OH) 2 ↓, 3.
Ferrous hydroxide and hydroperoxidation generate iron hydroxide flocculant, reaction equation be Fe (OH) 2+2H2O2=Fe (OH) 3 ↓
Pollutant in sewage is adsorbed agglomerating and is deposited to the bottom using ferrous hydroxide, iron hydroxide, reaches the mesh of purification sewage by+H2O
's.
Beneficial effects of the present invention are：
1st, present invention pickle liquor does raw material, 100% regeneration of pickle liquor, and being truly realized turns waste into wealth.
2nd, present invention frerrous chloride makes production process simple as total iron supplementary material, pollution-free.
3rd, present invention calcium oxide reduces cost as ferrous iron reactant, pollution-free.
4th, the reaction time of the invention is short, and processing cost is low, process is simple, process environmental protection, is capable of achieving scale and processes.
Description of the drawings
Fig. 1 is the flow sheet of the present invention.
In figure：Stir -1 stirring and dissolving of reactant, the hydrochloric acid of reactant 1-27% frerrous chloride contents are added in sewage original place
Pickle liquor, reactant 2- NaOH and calcium oxide, reaction conversion-in sewage original place, stirring is reacted, reactant 3-
For 30% content hydrogen peroxide, flocculation degraded-sewage original place is static to be waited 2 hours.
Specific embodiment
The present invention is described further below in conjunction with accompanying drawing：
Embodiment 1
As shown in figure 1, the present embodiment include micro- pollution sewage, reactant 1, stir, it is reactant 2, reaction conversion, anti-
Agent 3, flocculation degraded, reaction is answered to complete.
During work, by micro- pollution sewage (detect its colourity for 20 degree, suspension is 36mg/L, and COD is 116mg/L, other
Index is normal) weight is 10000 parts, in sewage adds reactant 1 (to detect that its composition is hydrochloric acid with the mode of atomizers spray
4.5%, total iron content is 10%) 5 parts, electricity consumption agitator stirring and dissolving (rotating speed is 300 revs/min), is slowly added after the completion of dissolving
Enter reactant 2 and (detect that its composition is calcium oxide 33.3%, 66.7%) NaOH carry out reaction conversion for 1 part, after stirring 10 minutes
It is 6.5 to measure pH value, is slow added into reactant 2, and addition is 1 part and carries out reaction conversion, and stirring was measured after 10 minutes
PH value is 7.75, adds reactant 3, and addition is 0.5 part, stops stirring, sewage after static 2 hours after being sufficiently mixed
To water-bed, sewage is limpid, and 5 degree of colourity ＜, suspension ＜ 5mg/L, COD refer to for 15mg/L items after testing for pollutant flocculating setting
Mark reaches national 1 class water quality standard, and purified treatment is completed.
Embodiment 2
As shown in figure 1, the present embodiment include micro- pollution sewage, reactant 1, stir, it is reactant 2, reaction conversion, anti-
Agent 3, flocculation degraded, reaction is answered to complete.
During work, by micro- pollution sewage (detect its colourity for 56 degree, suspension is 76mg/L, and fluoride is 0.17mg/L,
COD is 256mg/L, and other indexs are normal) weight be 10000 parts, add reactant with the mode of atomizers spray in sewage
1 (its composition is detected for hydrochloric acid 5.2%, total iron content is 12%) 10 parts, with agitator stirring and dissolving (rotating speed is 300 revs/min),
Reactant 2 is slowly added to after the completion of dissolving (its composition is detected for calcium oxide 50%, 50%) NaOH carry out reaction conversion for 4 parts, stir
It is 8.1 that pH value is measured after mixing 10 minutes, adds reactant 3, and addition is 1.2 parts, stops stirring after being sufficiently mixed, quiet
Only after 2 hours wastewater pollutants flocculating setting to water-bed, water body is limpid, after testing 5 degree of colourity ＜, suspension ＜ 5mg/L, fluoride
It is 26mg/L for 0.04mg/L, COD, indices reach national 3 class water quality standard, purified treatment is completed.
Using technical solutions according to the invention, or those skilled in the art is designed under the inspiration of technical solution of the present invention
Similar technical scheme, and above-mentioned technique effect is reached, fall into protection scope of the present invention.
Claims (4)
1. a kind of method that hydrochloric acid pickling waste liquor processes sewage, comprises the following steps：W-response is carried out at normal temperatures, 1.
Reactant 1 is added according to the pollution level of sewage and is stirred；2. with adding according to the pH value for having added 1 sewage of reactant
Reactant 2, reactant 2 carry out reacting with reactant 1 and lifting sewage pH value, stir, instead after being put into reactant 2
It is 10 minutes between seasonable；3. reactant 3 is added in water, stop stirring, flocculation degraded 2 hours, i.e. sewage after being sufficiently mixed
Process is completed.
2. the method that a kind of hydrochloric acid pickling waste liquor according to claim 1 processes sewage, it is characterised in that：It is described anti-
Agent 1 is answered for frerrous chloride, ferrous sulfate, one or more in pickle liquor, addition is 10000 parts of sewage, reaction
Agent 1 is 1-15 parts.
3. the method that a kind of hydrochloric acid pickling waste liquor according to claim 1 processes sewage, it is characterised in that：It is described anti-
Agent 2 is answered for calcium oxide, NaOH, one or more in calcium hydroxide, addition be adjust and add reactant 1 after
Sewage PH value reaches 7-9.
4. the method that a kind of hydrochloric acid pickling waste liquor according to claim 1 processes sewage, it is characterised in that：It is described anti-
Agent 3 is answered to be hydrogen peroxide, addition is the 5-15% for adding 1 mass of reactant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510623083.4A CN106554105A (en) | 2015-09-28 | 2015-09-28 | A kind of method that hydrochloric acid pickling waste liquor processes sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510623083.4A CN106554105A (en) | 2015-09-28 | 2015-09-28 | A kind of method that hydrochloric acid pickling waste liquor processes sewage |
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| CN106554105A true CN106554105A (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510623083.4A Pending CN106554105A (en) | 2015-09-28 | 2015-09-28 | A kind of method that hydrochloric acid pickling waste liquor processes sewage |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110129061A (en) * | 2019-05-31 | 2019-08-16 | 北京建工环境修复股份有限公司 | A kind of stabilizer of repairing heavy metal pollution and its preparation method and application |
| WO2023227119A1 (en) * | 2022-05-27 | 2023-11-30 | 叶涛 | New-type nascent flocculation water purification method and device thereof |
-
2015
- 2015-09-28 CN CN201510623083.4A patent/CN106554105A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110129061A (en) * | 2019-05-31 | 2019-08-16 | 北京建工环境修复股份有限公司 | A kind of stabilizer of repairing heavy metal pollution and its preparation method and application |
| WO2023227119A1 (en) * | 2022-05-27 | 2023-11-30 | 叶涛 | New-type nascent flocculation water purification method and device thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20170405 |