CN106219819A - A kind of zinc-plated waste acid recycling system - Google Patents
A kind of zinc-plated waste acid recycling system Download PDFInfo
- Publication number
- CN106219819A CN106219819A CN201610756996.8A CN201610756996A CN106219819A CN 106219819 A CN106219819 A CN 106219819A CN 201610756996 A CN201610756996 A CN 201610756996A CN 106219819 A CN106219819 A CN 106219819A
- Authority
- CN
- China
- Prior art keywords
- reaction tank
- spent acid
- zinc
- acid
- recycling system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide (Fe2O3)
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
nullThe invention discloses a kind of zinc-plated waste acid recycling system，Including the spent acid PH regulating reservoir sequentially connected、Sedimentation tank、Filtering ponds、Reaction tank one、Pressure filter、Reaction tank two、Dehydrator，After zinc-plated generation spent acid PH regulating reservoir，Through impurity such as piping to sedimentation tank and filtering ponds remove spent acid lime mud and raw material spent acid is brought into silts，Obtain top filtrate，Top filtrate is transported to reaction tank one by the pump housing，Ceaselessly stir after being passed through alkali liquor in reaction tank one，And need to be passed through air in reaction tank one，Obtain coagulating sedimentation thing，In a kind of separation after precipitation of reaction tank，Bottom sediment thing enters pressure filter and carries out filter pressing，The liquid phase CaCl2 solution heating evaporation on upper strata concentrates，In reactor, hydrogen peroxide is added again to reaction tank two by removing the precipitate of moisture removal after filter pressing，Remaining Fe (OH) 2 is oxidized to Fe (OH) 3，Precipitate is dried，Obtain ferric oxide red powder finished product.Waste acid recycling system is utilized to realize spent acid harmless treatment, it is achieved that resource recycles.
Description
Technical field
The present invention relates to Hot Galvanizing Technology field, particularly to a kind of zinc-plated waste acid recycling system.
Background technology
Zinc-plated one layer of zinc of plated surface referred at metal, alloy or other material is to play the table of the effect such as attractive in appearance, antirust
Face treatment technology.Pickling is a very important ring in galvanizing pre-treatment processing procedure, its objective is to eliminate the oxidation of steel piece surface
Thing and rust etc., otherwise will have a strong impact on and help plating effect, even produce plating leakage.Substantial amounts of spent acid is produced, in spent acid when pickling
Containing hydrochloric acid, iron chloride and silt etc., spent acid needs after processing, and reaching discharge standard could discharge.
Summary of the invention
It is an object of the invention to overcome deficiency of the prior art, it is provided that a kind of plating plating waste acid recycling system, it is possible to
Realize the harmless treatment of acid-washing waste acid, and get utilization.
The technical scheme is that and be achieved in that: a kind of zinc-plated waste acid recycling system, including sequentially connect
Spent acid PH regulating reservoir, sedimentation tank, filtering ponds, reaction tank one, pressure filter, reaction tank two, dehydrator, the spent acid of the most zinc-plated generation
After PH regulating reservoir regulates, in piping to sedimentation tank, remove the impurity such as the silt that spent acid lime mud and raw material spent acid bring into,
Wherein filtrate is transported to filtering ponds through the pump housing and is gone the removal of impurity further, obtains top filtrate, top filtrate is transported to instead by the pump housing
Ying Chiyi, ceaselessly stirs after being passed through alkali liquor in reaction tank one, and needs to be passed through air in reaction tank one, obtains Fe (OH)
The coagulating sedimentation thing of 3 and Fe (OH) 2, separates in reaction tank one after precipitation, and the Fe (OH) 3 and Fe (OH) 2 of bottom sinks
Shallow lake thing enters pressure filter and carries out filter pressing, and the CaCl2 solution of the liquid phase on upper strata carries out heating evaporation concentration, removes moisture removal by after filter pressing
Fe (OH) 3 to reaction tank two in reactor, add hydrogen peroxide again, and ceaselessly stir, hydrogen peroxide can be by remaining Fe (OH)
2 are oxidized to Fe (OH) 3, are dried by the precipitate in reaction tank, obtain Fe2O3 and i.e. obtain ferric oxide red powder finished product.
As preferably, the addition lime liquor in acid-washing waste acid in described spent acid regulating reservoir, stirring makes the pH regulator of solution
To 5.0～6.0.
Compared with prior art, advantages of the present invention is as follows: utilizes above-mentioned waste acid recycling system to achieve pickling and gives up
The harmless treatment of acid, obtains utility iron oxide red and CaCl2 product, it is achieved that resource recycles.
Figure of description
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
The detailed description of the invention of the present invention is as follows:
Embodiment 1: as shown in Figure 1: a kind of zinc-plated waste acid recycling system, including the spent acid PH regulating reservoir sequentially connected
1, sedimentation tank 2, filtering ponds 3, reaction tank 1, pressure filter 5, reaction tank 26, dehydrator 7, the spent acid of the most zinc-plated generation is at PH
After regulating reservoir regulation, in piping to sedimentation tank, remove the impurity such as the silt that spent acid lime mud and raw material spent acid bring into, wherein
Filtrate is transported to filtering ponds through the pump housing and is gone the removal of impurity further, obtains top filtrate, and by the pump housing, top filtrate is transported to reaction tank
One, ceaselessly stir after being passed through alkali liquor in reaction tank one, and need in reaction tank one, be passed through air, obtain Fe (OH) 3 with
And the coagulating sedimentation thing of Fe (OH) 2, separate after precipitation in reaction tank one, Fe (OH) 3 and Fe (OH) 2 precipitate of bottom
Entering pressure filter and carry out filter pressing, the CaCl2 solution of the liquid phase on upper strata carries out heating evaporation concentration, will remove the Fe of moisture removal after filter pressing
(OH) 3 to reaction tank two adds hydrogen peroxide again in reactor, and ceaselessly stirs, and hydrogen peroxide can be by remaining Fe (OH) 2 oxygen
Turn to Fe (OH) 3, the precipitate in reaction tank is dried, obtains Fe2O3 and i.e. obtain ferric oxide red powder finished product.
Utilize above-mentioned waste acid recycling system to achieve the harmless treatment of acid-washing waste acid, obtain utility ferrum oxide
Red and CaCl2 product, it is achieved that resource recycles.
Finally it is pointed out that above example is only the more representational example of the present invention.Obviously, the technology of the present invention
Scheme is not limited to above-described embodiment, it is also possible to have many deformation.Those of ordinary skill in the art can be from disclosed by the invention
All deformation that content directly derives or associates, are all considered as protection scope of the present invention.
Claims (2)
1. a zinc-plated waste acid recycling system, it is characterised in that the spent acid PH regulating reservoir that includes sequentially connecting, sedimentation tank,
Filtering ponds, reaction tank one, pressure filter, reaction tank two, dehydrator, the spent acid of the most zinc-plated generation PH regulating reservoir regulate after, warp
The impurity such as the silt that piping is brought into removing spent acid lime mud in sedimentation tank and raw material spent acid, wherein filtrate is transported to through the pump housing
Filtering ponds go the removal of impurity further, obtain top filtrate, and by the pump housing, top filtrate is transported to reaction tank one, logical in reaction tank one
Ceaselessly stirring after entering alkali liquor, and need to be passed through air in reaction tank one, the coagulation obtaining Fe (OH) 3 and Fe (OH) 2 sinks
Shallow lake thing, separates in reaction tank one after precipitation, and Fe (OH) 3 and Fe (OH) 2 precipitate of bottom enters pressure filter and presses
Filter, the CaCl2 solution of the liquid phase on upper strata carries out heating evaporation concentration, will remove Fe (OH) 3 to the reaction tank two of moisture removal after filter pressing
Adding hydrogen peroxide again in reactor, and ceaselessly stir, remaining Fe (OH) 2 can be oxidized to Fe (OH) 3 by hydrogen peroxide, will be anti-
The precipitate of Ying Chizhong is dried, and obtains Fe2O3 and i.e. obtains ferric oxide red powder finished product.
The zinc-plated waste acid recycling system of one the most according to claim 1, it is characterised in that in described spent acid regulating reservoir
In acid-washing waste acid add lime liquor, stirring make the pH regulator of solution to 5.0～6.0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610756996.8A CN106219819A (en) | 2016-08-29 | 2016-08-29 | A kind of zinc-plated waste acid recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610756996.8A CN106219819A (en) | 2016-08-29 | 2016-08-29 | A kind of zinc-plated waste acid recycling system |
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| Publication Number | Publication Date |
|---|---|
| CN106219819A true CN106219819A (en) | 2016-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610756996.8A Pending CN106219819A (en) | 2016-08-29 | 2016-08-29 | A kind of zinc-plated waste acid recycling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109467243A (en) * | 2018-10-31 | 2019-03-15 | 徐州瑞马智能技术有限公司 | A kind of hot galvanizing waste water treatment system and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102757142A (en) * | 2012-08-06 | 2012-10-31 | 浙江海拓环境技术有限公司 | Method for recycling and processing nickel in stainless steel pickling waste acid |
| CN104386758A (en) * | 2014-11-20 | 2015-03-04 | 周淑华 | Production process for recycling pickling waste acid of galvanization industry |
-
2016
- 2016-08-29 CN CN201610756996.8A patent/CN106219819A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102757142A (en) * | 2012-08-06 | 2012-10-31 | 浙江海拓环境技术有限公司 | Method for recycling and processing nickel in stainless steel pickling waste acid |
| CN104386758A (en) * | 2014-11-20 | 2015-03-04 | 周淑华 | Production process for recycling pickling waste acid of galvanization industry |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109467243A (en) * | 2018-10-31 | 2019-03-15 | 徐州瑞马智能技术有限公司 | A kind of hot galvanizing waste water treatment system and method |
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Application publication date: 20161214 |