CN204369696U - With the carbon dioxide de hardness system of water in a kind of dirty acid - Google Patents
With the carbon dioxide de hardness system of water in a kind of dirty acid Download PDFInfo
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- CN204369696U CN204369696U CN201420869967.9U CN201420869967U CN204369696U CN 204369696 U CN204369696 U CN 204369696U CN 201420869967 U CN201420869967 U CN 201420869967U CN 204369696 U CN204369696 U CN 204369696U
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Abstract
The utility model belongs to the processing technology field of trade effluent, is specifically related to the carbon dioxide de hardness system with water in a kind of dirty acid.With a carbon dioxide de hardness system for water in dirty acid, comprise neutralizing well, plate-and-frame filter press, aeration tank, the first strainer, first stage precipitation tank, the second strainer, dashpot, second-level settling pond, the 3rd strainer.By in dirty acid provided by the utility model and the carbon dioxide de hardness system of water, by sour for dirt neutralized wastewater after removing heavy metal ion, useless water hardness can be reduced further by carbonic acid gas, thus reaches the object of production reuse.
Description
Technical field
The utility model belongs to the processing technology field of trade effluent, is specifically related to the carbon dioxide de hardness system with water in a kind of dirty acid.
Background technology
Dirty acid is a kind of waste water produced in nonferrous smelting and sulfuric acid industry flue gas acid preparing process, usually containing hazardous and noxious substances such as mercury, arsenic, cadmium, copper, lead, zinc and content higher than common trade effluent, directly can not discharge, must heavy metal carry out effectively removing making discharge of wastewater up to standard.Therefore, certain importance and urgency is had to the improvement of the dense heavy metal-polluted acid of height.
At present, the Treatment process of dirty acid mainly contains: lime method, lime-iron salt method, sulfuration method, absorption and ion exchange method.The acid water amount of having is large, the high and features such as complicated component of toxic element content, and therefore, how to select can industrial applications have the treatment process of economic feasibility, most important.Its economic feasibility and each method raw material used and consumption, the subsequent disposal complexity of products therefrom is closely related.Therefore, to the acid water containing heavy metal ion such as arsenic, general employing multistage-combination processing mode, to realize the object removing multiple detrimental impurity.
As the treatment process of arsenic in dirty acid, there is complex process, problem that processing cost is high in extraction, ion exchange method; The sodium sulphite precipitator method are that arsenic is converted into red arsenic, and prepare white arsenic through operations such as oxidation, reduction, crystallizations, the arsenic recovery utilization rate of these sodium sulphite precipitator method is high, but its technical process is long, and processing costs is high; Lime-iron salt method is by adding molysite to containing in the dirty acid of arsenic, make containing arsenic in the dirty acid of arsenic with the form Precipitation of arsenic iron co-precipitation, the method process is low containing the dirty sour cost of arsenic, technique is simple, but usually need the molysite using iron more than arsenic mol ratio 4:1 in the method, there is waste residue amount large, be unfavorable for the ultimate disposal of waste residue or the shortcoming of process.
Therefore, exploring, studying the new treatment process of arsenic in dirty acid is the necessary developing direction of the art enterprise.The treatment process studied ensureing, under dirty acid treatment prerequisite up to standard, to reduce processing cost, should reduce waste residue output, obtaining stable waste residue, prevent the secondary pollution of arsenic, and avoids arsenic dispersion on stream and pollution.
Utility model content
For solving the deficiencies in the prior art, the utility model provides the carbon dioxide de hardness system with water in a kind of dirty acid.
With a carbon dioxide de hardness system for water in dirty acid, comprise neutralizing well, plate-and-frame filter press, aeration tank, the first strainer, first stage precipitation tank, the second strainer, dashpot, second-level settling pond, the 3rd strainer, wherein:
Described plate-and-frame filter press connects described neutralizing well, carries out press filtration for the gypsum suspension liquid will obtained through described neutralizing well;
Described aeration tank connects described plate-and-frame filter press, carries out aeration for the filtrate will obtained through described plate-and-frame filter press;
Described first strainer connects described aeration tank;
Described first stage precipitation tank connects described first strainer, for the filtrate obtained through described first strainer is carried out heavy metal ion precipitation;
Described second strainer connects described first stage precipitation tank;
Described dashpot connects described second strainer;
Described second-level settling pond is provided with carbonic acid gas air feeder, and described second-level settling pond connects described dashpot, for softening filtrate;
Described 3rd strainer connects described second-level settling pond.
Preferably, described second strainer also can connect described neutralizing well.The mud obtained through the second strainer can return the precipitation removal step that neutralizing well carries out again.
Preferably, described aeration tank is provided with milk of lime charging device, ferrous sulfate charging device and gas blower.
Preferably, described first stage precipitation tank is provided with sodium sulphite charging device, evolution sulfide precipitation.
Preferably, described neutralizing well is provided with lime slurry charging device or carbide slag liquid charging device, neutralizes acid water.
Traditional dirt acid neutralized wastewater is after sewage treatment plant process, and useless water hardness is higher, not easily recycles, and causes a large amount of wastes.And by dirty acid provided by the utility model and the carbon dioxide de hardness system of water, by sour for dirt neutralized wastewater after removing heavy metal ion, useless water hardness can be reduced further by carbonic acid gas, thus reach the object of production reuse.
Accompanying drawing explanation
Fig. 1 is in dirty acid provided by the utility model and the system diagram of the carbon dioxide de hardness system of water.
Embodiment
Be described principle of the present utility model and feature below in conjunction with accompanying drawing, illustrated embodiment, only for explaining the utility model, is not intended to limit scope of the present utility model.
In an embodiment, as shown in Figure 1, in dirty acid and the carbon dioxide de hardness system of water, comprise connect successively neutralizing well, plate-and-frame filter press, aeration tank, the first strainer, first stage precipitation tank, the second strainer, dashpot, second-level settling pond and the 3rd strainer.Described second strainer also connects described neutralizing well.Described aeration tank is provided with milk of lime charging device, ferrous sulfate charging device and gas blower.Described first stage precipitation tank is provided with sodium sulphite charging device.Described neutralizing well is provided with lime slurry charging device.
Metallurgical off-gas acid-making purification sections etc. obtain dirty acid after entering neutralizing well, carry out neutralization reaction by carbide slag liquid or lime slurry.The gypsum suspension liquid that reaction generates enters plate-and-frame filter press press filtration.Filtrate enters aeration tank, and in aeration tank, the milk of lime of filtrate and input, ferrous sulfate, the air that blasts carry out aerated reaction.After reacting completely, through the first strainer, supernatant liquid enters first stage precipitation tank.The sodium sulphite dropped in first stage precipitation tank precipitates heavy metal ion such as arsenic.Afterwards, through the second strainer, dashpot, in second-level settling pond, carbonic acid gas air feeder is for carbonic acid gas, and calcium, magnesium ion precipitate, and the hardness of filtrate is reduced.Clear liquid after 3rd metre filter, can be back to production.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1., in dirty acid and the carbon dioxide de hardness system of water, it is characterized in that, comprise neutralizing well, plate-and-frame filter press, aeration tank, the first strainer, first stage precipitation tank, the second strainer, dashpot, second-level settling pond, the 3rd strainer, wherein:
Described plate-and-frame filter press connects described neutralizing well, carries out press filtration for the gypsum suspension liquid will obtained through described neutralizing well;
Described aeration tank connects described plate-and-frame filter press, carries out aeration for the filtrate will obtained through described plate-and-frame filter press;
Described first strainer connects described aeration tank;
Described first stage precipitation tank connects described first strainer, for the filtrate obtained through described first strainer is carried out heavy metal ion precipitation;
Described second strainer connects described first stage precipitation tank;
Described dashpot connects described second strainer;
Described second-level settling pond is provided with carbonic acid gas air feeder, and described second-level settling pond connects described dashpot, for softening filtrate;
Described 3rd strainer connects described second-level settling pond.
2., in dirty acid according to claim 1 and the carbon dioxide de hardness system of water, it is characterized in that: described second strainer also can connect described neutralizing well, for the mud obtained through described second metre filter is entered to described neutralizing well.
3., in dirty acid according to claim 1 and 2 and the carbon dioxide de hardness system of water, it is characterized in that: described aeration tank is provided with milk of lime charging device, ferrous sulfate charging device and gas blower.
4., in dirty acid according to claim 1 and 2 and the carbon dioxide de hardness system of water, it is characterized in that: described first stage precipitation tank is provided with sodium sulphite charging device.
5., in dirty acid according to claim 1 and 2 and the carbon dioxide de hardness system of water, it is characterized in that: described neutralizing well is provided with lime slurry charging device or carbide slag liquid charging device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420869967.9U CN204369696U (en) | 2014-12-31 | 2014-12-31 | With the carbon dioxide de hardness system of water in a kind of dirty acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420869967.9U CN204369696U (en) | 2014-12-31 | 2014-12-31 | With the carbon dioxide de hardness system of water in a kind of dirty acid |
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| CN204369696U true CN204369696U (en) | 2015-06-03 |
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| CN201420869967.9U Active CN204369696U (en) | 2014-12-31 | 2014-12-31 | With the carbon dioxide de hardness system of water in a kind of dirty acid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018188A (en) * | 2019-12-25 | 2020-04-17 | 长沙华时捷环保科技发展股份有限公司 | Method for treating waste acid wastewater by utilizing hydrogen sulfide and carbon dioxide generated in hydrogen sulfide production process |
| CN112759071A (en) * | 2020-12-30 | 2021-05-07 | 武汉飞博乐环保工程有限公司 | Aeration device for sewage rapid biochemical treatment system |
-
2014
- 2014-12-31 CN CN201420869967.9U patent/CN204369696U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111018188A (en) * | 2019-12-25 | 2020-04-17 | 长沙华时捷环保科技发展股份有限公司 | Method for treating waste acid wastewater by utilizing hydrogen sulfide and carbon dioxide generated in hydrogen sulfide production process |
| CN112759071A (en) * | 2020-12-30 | 2021-05-07 | 武汉飞博乐环保工程有限公司 | Aeration device for sewage rapid biochemical treatment system |
| CN112759071B (en) * | 2020-12-30 | 2022-02-18 | 武汉飞博乐环保工程有限公司 | Aeration device for sewage rapid biochemical treatment system |
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