CN108947022A - A kind of technique for treating industrial wastewater - Google Patents
A kind of technique for treating industrial wastewater Download PDFInfo
- Publication number
- CN108947022A CN108947022A CN201811033880.7A CN201811033880A CN108947022A CN 108947022 A CN108947022 A CN 108947022A CN 201811033880 A CN201811033880 A CN 201811033880A CN 108947022 A CN108947022 A CN 108947022A
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- China
- Prior art keywords
- technique
- industrial wastewater
- treating industrial
- pond
- reaction solution
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- 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
- C02F1/66—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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention belongs to technical field of waste water processing, provide a kind of technique for treating industrial wastewater.The technique for treating industrial wastewater includes: successively to discharge waste water behind pond through conditioning tank, neutralization pond, aeration oxidation pool, coagulation reaction tank, sedimentation basin, filtering ponds, pH readjustment, it is characterised in that: the pH that the lime after pulp is added in coagulation reaction tank adjusts reaction solution is 7-10.The technique for treating industrial wastewater reduces the sulfur content in waste residue, reduces the discharge of sulfide, reduces the usage amount of filter cloth, has saved SO2Raw material and labour cost；Improve environmental pollution, it is energy-saving, alleviate staff labor intensity；So that economic benefit gets a promotion.
Description
Technical field
The invention belongs to technical field of waste water processing, specifically, being related to a kind of technique for treating industrial wastewater.
Background technique
Zinc hydrometallurgy can give off a large amount of washes when smelting.The acid relatively strong, heavy metal ion of washes compared with
More, especially lead, zinc, cadmium plasma severely exceed.Smelting most important pollutant in factory production waste water is acid.The prior art
In, commonly used treatment process is legal in using handled, comprising: neutralizer is added in industrial wastewater, will give up
The pH of water is adjusted to 6-8, is subsequently added into collecting agent vulcanized sodium to remove the metallic elements such as zinc, lead, cadmium, then passes through precipitating, filtering
Means are isolated.Legal progress wastewater treatment has the disadvantage in that sulphur is easily exceeded in water after processing, has black in
Color attachment is attached in chute, it is difficult to be cleared up；Sulfur-bearing is high in the waste residue that water after processing generates, large viscosity, difficult filters pressing, pressure
The filter cloth of filter consumes high；The hydrogen sulfide gas that charging reaction generates is easy to make operative employee's poisoning and pollution environment.
Summary of the invention
For deficiency above-mentioned in the prior art, the object of the present invention is to provide a kind of technique for treating industrial wastewater；
The technique for treating industrial wastewater reduces the sulfur content in waste residue, reduces the discharge of sulfide, reduces the usage amount of filter cloth,
Sulfur dioxide (SO is saved2) raw material and labour cost；Improve environmental pollution, it is energy-saving, alleviate staff labor intensity；Make
Economic benefit is obtained to be significantly improved.
In order to achieve the above object, the solution that the present invention uses is:
A kind of technique for treating industrial wastewater, comprising: waste water is successively anti-through conditioning tank, neutralization pond, aeration oxidation pool, coagulation
Ying Chi, sedimentation basin, filtering ponds, pH readjustment discharge behind pond, it is characterised in that: the lime tune after pulp is added in coagulation reaction tank
The pH for saving reaction solution is 7-10.
A kind of beneficial effect of technique for treating industrial wastewater provided by the invention is:
This kind of technique for treating industrial wastewater provided by the invention is led to by generating the compound of indissoluble under alkaline condition
PH value is overregulated to keep the pollutant load for being difficult to react in industrial wastewater up to standard, so that treated, water reaches three classes surface water
Discharge standard.The technique for treating industrial wastewater reduces the sulfur content in waste residue, reduces the discharge of sulfide, reduces filter
The usage amount of cloth, has saved SO2Raw material and labour cost；Improve environmental pollution, it is energy-saving, alleviate staff labor intensity；
So that economic benefit gets a promotion.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
A kind of technique for treating industrial wastewater provided in an embodiment of the present invention is specifically described below.
A kind of technique for treating industrial wastewater, comprising the following steps: by waste water successively through conditioning tank, neutralization pond, aerating oxidation
Pond, coagulation reaction tank, sedimentation basin, filtering ponds, pH readjustment discharge behind pond, it is characterised in that: pulp is added in coagulation reaction tank
The pH that lime afterwards adjusts reaction solution is 7-10.
Wherein, paddle enables to the purity of lime higher, reacts more abundant.It should be noted that in the present embodiment
In, it is further 80 mesh that the partial size of lime, which is 70-90 mesh, so that reaction is more abundant.
In the present embodiment, further, when containing zinc in reaction solution, the pH for adjusting reaction solution is 7-8；Work as reaction solution
In contain cadmium when, further, adjust reaction solution pH be 8-9.Inventors have found that due to the metal ions such as zinc, cadmium be difficult to
Hydroxyl, which combines, generates precipitating, it is therefore desirable to be properly increased and be reacted according to the combination complexity of metal ion and hydroxide ion
The content of hydroxide ion in liquid, sufficiently to remove metal ion.
It should be noted that pH readjustment pond in need to adjust filtered fluid to pH be 6-9, due to the pH in coagulation reaction tank
Value it is higher, reaction solution in alkalinity, precipitate filtered filtered fluid be also in alkalinity, therefore, it is necessary to filtered fluid carry out acidity
Being adjusted to pH is 6-9, to meet the discharge standard of three classes surface water.In the present embodiment, to avoid introducing new impurity, into one
Step ground, the acidity adjustment of liquid is filtered using sulfuric acid.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
Present embodiments provide a kind of technique for treating industrial wastewater, comprising: by waste water successively through conditioning tank, neutralization pond, exposure
Gas oxidation pond, coagulation reaction tank, sedimentation basin, filtering ponds, pH readjustment discharge behind pond: where detect and contain zinc in waste water, mixed
Partial size after pulp is added in solidifying reaction tank is that the pH of the lime adjusting reaction solution of 70 mesh is 7；Sulfuric acid is used in pH readjustment pond
Adjust filtered fluid to pH be 6.
Embodiment 2
Present embodiments provide a kind of technique for treating industrial wastewater, comprising: by waste water successively through conditioning tank, neutralization pond, exposure
Gas oxidation pond, coagulation reaction tank, sedimentation basin, filtering ponds, pH readjustment discharge behind pond: where detect and contain zinc in waste water, mixed
Partial size after pulp is added in solidifying reaction tank is that the pH of the lime adjusting reaction solution of 90 mesh is 8；Sulfuric acid is used in pH readjustment pond
Adjust filtered fluid to pH be 9.
Embodiment 3
Present embodiments provide a kind of technique for treating industrial wastewater, comprising: by waste water successively through conditioning tank, neutralization pond, exposure
Gas oxidation pond, coagulation reaction tank, sedimentation basin, filtering ponds, pH readjustment discharge behind pond: where detect and contain cadmium in waste water, mixed
Partial size after pulp is added in solidifying reaction tank is that the pH of the lime adjusting reaction solution of 80 mesh is 9；Sulfuric acid is used in pH readjustment pond
Adjust filtered fluid to pH be 7.
Embodiment 4
Present embodiments provide a kind of technique for treating industrial wastewater, comprising: by waste water successively through conditioning tank, neutralization pond, exposure
Gas oxidation pond, coagulation reaction tank, sedimentation basin, filtering ponds, pH readjustment discharge behind pond: where and it detects and contains zinc and cadmium in waste water,
Partial size after pulp is added in coagulation reaction tank is that the pH of the lime adjusting reaction solution of 80 mesh is 10；It is used in pH readjustment pond
Sulfuric acid adjust filtered fluid to pH be 8.
Comparative example 1
This comparative example provides a kind of technique for treating industrial wastewater, comprising: by waste water successively through conditioning tank, neutralization pond, exposure
Gas oxidation pond, coagulation reaction tank, sedimentation basin, filtering ponds, pH readjustment discharge behind pond: where and it detects and contains zinc and cadmium in waste water,
Partial size after pulp is added in coagulation reaction tank is that the pH of the lime adjusting reaction solution of 100 mesh is 10；It is adopted in pH readjustment pond
It is 8 with sulfuric acid adjusting filtered fluid to pH.
Comparative example 2
This comparative example provides a kind of technique for treating industrial wastewater, comprising: by waste water successively through conditioning tank, neutralization pond, exposure
Gas oxidation pond, coagulation reaction tank, sedimentation basin, filtering ponds, pH readjustment discharge behind pond: where and it detects and contains zinc and cadmium in waste water,
It is 7 that common lime is added in coagulation reaction tank and adjusts the pH of reaction solution.
Comparative example 3
This comparative example provides a kind of technique for treating industrial wastewater, comprising: by waste water successively through conditioning tank, neutralization pond, exposure
Gas oxidation pond, coagulation reaction tank, sedimentation basin, filtering ponds, pH readjustment discharge behind pond: where detect and contain cadmium in waste water, mixed
Partial size after pulp is added in solidifying reaction tank is that the pH of the lime adjusting reaction solution of 80 mesh is 7；Sulfuric acid is used in pH readjustment pond
Adjust filtered fluid to pH be 8.
Experimental example 1
Experimental method: experimental group 1-7 is set by embodiment 1-4 and comparative example 1-3, detects and crosses filter residue in embodiment 1-7
In sulfur content, the results are shown in Table 1:
Table 1
| Group number | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| Sulfur content (%) | 0.32 | 0.33 | 0.28 | 0.29 | 0.8 | 96.3 | 1.2 |
Containing in filter residue the result shows that, is crossed using technique for treating industrial wastewater gained provided in an embodiment of the present invention by table 1
Sulphur can be down to 0.3% or so, have dropped about 96% than original process.
Experimental example 2
Experimental method: setting experimental group 1-7 for embodiment 1-4 and comparative example 1-3, and it is real that routine techniques detection is respectively adopted
The content for applying in a 1-7 zinc and cadmium in waste water and filtered fluid before and after the processing, the results are shown in Table shown in 2:
Table 2
From the data in table 2, it can be seen that using in filtered fluid obtained by technique for treating industrial wastewater provided in an embodiment of the present invention
Zinc and cadmium content significantly reduce.
In conclusion using technique for treating industrial wastewater provided by the invention；The technique for treating industrial wastewater reduces useless
Sulfur content in slag reduces the discharge of sulfide；The usage amount for reducing filter cloth, has saved SO2Raw material and labour cost；Improve
Environmental pollution, it is energy-saving, alleviate staff labor intensity；So that economic benefit is significantly improved.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of technique for treating industrial wastewater, comprising: by waste water successively through conditioning tank, neutralization pond, aeration oxidation pool, coagulating
Pond, sedimentation basin, filtering ponds, pH readjustment discharge behind pond, it is characterised in that: the lime after pulp is added in the coagulation reaction tank
The pH for adjusting reaction solution is 7-10.
2. technique for treating industrial wastewater according to claim 1, it is characterised in that: the partial size of the lime is 70-90 mesh.
3. technique for treating industrial wastewater according to claim 2, it is characterised in that: the partial size of the lime is 80 mesh.
4. technique for treating industrial wastewater according to claim 2, it is characterised in that: when containing zinc in the reaction solution,
The pH for adjusting the reaction solution is 7-8.
5. technique for treating industrial wastewater according to claim 2, it is characterised in that: when containing cadmium in the reaction solution,
The pH for adjusting the reaction solution is 8-9.
6. technique for treating industrial wastewater according to claim 1, it is characterised in that: adjust filtering in pH readjustment pond
Liquid to pH be 6-9.
7. technique for treating industrial wastewater according to claim 4, it is characterised in that: carry out the filtered fluid using sulfuric acid
Acidity adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033880.7A CN108947022A (en) | 2018-09-05 | 2018-09-05 | A kind of technique for treating industrial wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811033880.7A CN108947022A (en) | 2018-09-05 | 2018-09-05 | A kind of technique for treating industrial wastewater |
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| Publication Number | Publication Date |
|---|---|
| CN108947022A true CN108947022A (en) | 2018-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811033880.7A Pending CN108947022A (en) | 2018-09-05 | 2018-09-05 | A kind of technique for treating industrial wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115070352A (en) * | 2022-06-16 | 2022-09-20 | 江苏伟业铝材有限公司 | Aluminum profile machining process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5370800A (en) * | 1993-05-25 | 1994-12-06 | Stevenson; Sanford M. | Method for removing metal compounds from waste water |
| WO2007098592A1 (en) * | 2006-03-01 | 2007-09-07 | Noram Engineering And Constructors Ltd. | Method for treating acidic waters using recycled acidic and basic sludges |
| CN101805084A (en) * | 2010-03-29 | 2010-08-18 | 中钢集团马鞍山矿山研究院有限公司 | Process for treating mine wastewater containing sulfur minerals, As, Pb and Cd |
| CN102107963A (en) * | 2010-12-30 | 2011-06-29 | 天津市环境保护科学研究院 | Method for treating acid-washing wastewater and metallic ions in iron and steel industry |
| CN105621744A (en) * | 2016-03-07 | 2016-06-01 | 山东国信环境系统股份有限公司 | Copper ore acid wastewater treatment and recovery device and method |
-
2018
- 2018-09-05 CN CN201811033880.7A patent/CN108947022A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5370800A (en) * | 1993-05-25 | 1994-12-06 | Stevenson; Sanford M. | Method for removing metal compounds from waste water |
| WO2007098592A1 (en) * | 2006-03-01 | 2007-09-07 | Noram Engineering And Constructors Ltd. | Method for treating acidic waters using recycled acidic and basic sludges |
| CN101805084A (en) * | 2010-03-29 | 2010-08-18 | 中钢集团马鞍山矿山研究院有限公司 | Process for treating mine wastewater containing sulfur minerals, As, Pb and Cd |
| CN102107963A (en) * | 2010-12-30 | 2011-06-29 | 天津市环境保护科学研究院 | Method for treating acid-washing wastewater and metallic ions in iron and steel industry |
| CN105621744A (en) * | 2016-03-07 | 2016-06-01 | 山东国信环境系统股份有限公司 | Copper ore acid wastewater treatment and recovery device and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115070352A (en) * | 2022-06-16 | 2022-09-20 | 江苏伟业铝材有限公司 | Aluminum profile machining process |
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Application publication date: 20181207 |
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