CN108658368A - The processing method of leather waste water - Google Patents
The processing method of leather waste water Download PDFInfo
- Publication number
- CN108658368A CN108658368A CN201810348211.2A CN201810348211A CN108658368A CN 108658368 A CN108658368 A CN 108658368A CN 201810348211 A CN201810348211 A CN 201810348211A CN 108658368 A CN108658368 A CN 108658368A
- Authority
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- China
- Prior art keywords
- waste water
- pond
- processing method
- leather waste
- treatment
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- 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.)
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Classifications
-
- 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
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
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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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
-
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/22—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof
- C02F2103/24—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof from tanneries
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
Landscapes
- 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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention discloses the processing method of leather waste water, and using coagulating treatment as pre-treatment, in conjunction with biochemical treatment, treated, and waste water reaches emission request；It is followed successively by filtering ponds, coagulating treatment pond, flotation tank, transition pond, anaerobism aeration tank, intermediate sedimentation pond, oxidation pond, sedimentation basin；Present invention process flow is simple, small investment, and a large amount of COD and SS cannot be precipitated while removing chromium.
Description
Technical field
The present invention relates to the processing methods of a kind of wastewater treatment method more particularly to leather waste water.
Background technology
China is leather industry big country, and leather industry is also faced with the serious restriction of resource and ecological environment, leather row
Industry plays an important role in China's economic development, produces a large amount of waste water accordingly, and discharge capacity is up to 7 × 107t/a.Its
Middle Chrome Tanning Liquor toxicity is very high, and Cr concentration reaches 3000mg/L~6000mg/L；Also contain certain density Cr in comprehensive wastewater；This
There is a large amount of SS and COD outside.And these wastewater flow rates only have about 30% qualified discharge, seriously pollute environment, endanger health of people.
A low major reason of leather waste water improvement rate is its pollutional load height, complicated component, is difficult to handle, most of process hides factory rules and regulations
Mould is small, administers waste water and has any problem in economy, technology.Therefore, developing the leather waste water being simple and efficient and administering has greatly
Realistic meaning.
Invention content
Based on the above issues, the purpose of the present invention is to provide the processing methods of leather waste water, are handled based on conventional sewage
Technique add suitable preparation for the particularity of leather waste water, technological process is simple, and high treating effect, reaches discharge
Standard；Technical solution is as follows：
The processing method of leather waste water of the present invention, using coagulating treatment as pre-treatment, in conjunction with biochemical treatment, after processing
Waste water reach emission request；It is followed successively by filtering ponds, coagulating treatment pond, flotation tank, transition pond, anaerobism aeration tank, intermediate sedimentation
Pond, oxidation pond, sedimentation basin；Wherein,
In coagulating treatment pond, Organic Matter Coagulation agent and inorganic matter coagulant are added；Organic matter selection PAM, molecular weight 900 ×
104-1200×104, inorganic matter selection Al2(SO4)3；
In flotation tank, aluminium chloride and FeSO are added4；
In anaerobism aeration tank, hydraulic retention 4 hours,
In oxidation pond, hydraulic retention 8 hours.
PAM dosages are 40mg/L.
Al2(SO4)3, dosage 1000mg/L.
The dosage of aluminium chloride is 100-200mg/L.
FeSO4Dosage be 300-500mg/L.
The processing method of leather waste water of the present invention, first passes through filter tank, removes big suspended matter, enters coagulating treatment pond afterwards,
Dosing coagulant is organic and inorganic combination, and organic matter selects PAM, molecular weight 900 × 104-1200×104, inorganic matter selection
Al2(SO4)3, coloration removes substantially, and the removal rate of chromium ion is dirty up to 92%, SS removal rates up to 71%, COD removal rates nearly 40%
Mud sedimentation is fast, and resultant effect is good；Alkaline cleaning is carried out again, while being added in acid FeSO4, further go to oil removal and portion
While dividing COD, the pH value of waste water also declines therewith, plays neutralization, catchments through transition pond, is promoted to anaerobism aeration
Pond is stopped 4 hours, is separated by solid-liquid separation through intermediate sedimentation pond after aerating wastewater, supernatant using activated sludge process and boring aeration
Liquid stream enters oxidation pond, is most discharged afterwards through sedimentation basin.
Description of the drawings
Fig. 1 is the process flow schematic diagram of leather waste water of the present invention.
Specific implementation mode
Technical scheme of the present invention described in detail below.The embodiment of the present invention is only for illustrating concrete structure, the rule of the structure
Mould should not be limited by the examples.
As shown in Figure 1, the processing method of leather waste water of the present invention, using coagulating treatment as pre-treatment, in conjunction with biochemistry
Processing, treated, and waste water reaches emission request；It is followed successively by filtering ponds 1, coagulating treatment pond 2, flotation tank 3, transition pond 4, anaerobism
Aeration tank 5, centre 6, oxidation pond 7, sedimentation basin 8；
In coagulating treatment pond 2, Organic Matter Coagulation agent and inorganic matter coagulant are added；Organic matter selects PAM, molecular weight 900
×104-1200×104, inorganic matter selection Al2(SO4)3；PAM dosages are 40mg/L, Al2(SO4)3, dosage 1000mg/L；
In flotation tank 3, aluminium chloride and FeSO are added4；The dosage of aluminium chloride is 100-200mg/L, FeSO4's
Dosage is 300-500mg/L；
In anaerobism aeration tank, hydraulic retention 4 hours, in oxidation pond, hydraulic retention 8 hours.
The leather waste water of workshop discharge after removing big suspended matter through filtering ponds 1, into coagulating treatment pond 2, adds PAM
And Al2(SO4)3, remove S and Cr and discoloration；Waste water is lifted into flotation tank 3 through pump, adds aluminium chloride and FeSO4, into
One step removes oil removal and part COD；After transition pond 4 is catchmented, is promoted and arrive anaerobic pond 5, hydraulic retention 4 hours, aerating wastewater
It is separated by solid-liquid separation by intermediate sedimentation pond 6, for supernatant from oxidation pond 7 is flowed into, hydraulic retention 8 hours is most solid through sedimentation basin 8 afterwards
After liquid separation, discharged wastewater met the national standard.
Claims (5)
1. the processing method of leather waste water, which is characterized in that using coagulating treatment as pre-treatment, in conjunction with biochemical treatment, place
Waste water after reason reaches emission request；It is followed successively by filtering ponds, coagulating treatment pond, flotation tank, transition pond, anaerobism aeration tank, centre
Sedimentation basin, oxidation pond, sedimentation basin；Wherein,
In coagulating treatment pond, Organic Matter Coagulation agent and inorganic matter coagulant are added；Organic matter selects PAM, 900 × 104- of molecular weight
1200 × 104, inorganic matter selects Al2 (SO4) 3；
In flotation tank, aluminium chloride and FeSO4 are added；
In anaerobism aeration tank, hydraulic retention 4 hours,
In oxidation pond, hydraulic retention 8 hours.
2. the processing method of leather waste water according to claim 1, it is characterised in that the PAM dosages are 40mg/L.
3. the processing method of leather waste water according to claim 1, it is characterised in that the Al2 (SO4) 3, dosage are
1000mg/L。
4. the processing method of leather waste water according to claim 1, it is characterised in that the dosage of the aluminium chloride is
100-200mg/L。
5. the processing method of leather waste water according to claim 1, it is characterised in that the dosage of the FeSO4 is 300-
500mg/L。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810348211.2A CN108658368A (en) | 2018-06-14 | 2018-06-14 | The processing method of leather waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810348211.2A CN108658368A (en) | 2018-06-14 | 2018-06-14 | The processing method of leather waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108658368A true CN108658368A (en) | 2018-10-16 |
Family
ID=63780021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810348211.2A Pending CN108658368A (en) | 2018-06-14 | 2018-06-14 | The processing method of leather waste water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110902957A (en) * | 2019-12-06 | 2020-03-24 | 山东海景天环保科技股份公司 | Method for realizing synchronous desulfurization and denitrification of leather wastewater by using sulfur autotrophic denitrification process |
| CN111153528A (en) * | 2020-01-22 | 2020-05-15 | 江苏鼎弘环境科技有限公司 | Method for treating chromium-containing wastewater in leather production |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731716A (en) * | 2014-12-06 | 2016-07-06 | 哈尔滨金大环境工程有限公司 | Starch waste water treatment apparatus and method |
| CN106242189A (en) * | 2016-08-30 | 2016-12-21 | 安徽银河皮革有限公司 | A kind of process hides Water Sproading Biochemical method technique |
| CN206720972U (en) * | 2017-03-20 | 2017-12-08 | 天津黛青生物科技有限公司 | A kind of medicine adornment wastewater treatment integrated apparatus |
| CN108033654A (en) * | 2018-01-23 | 2018-05-15 | 中信环境技术（广州）有限公司 | A kind of embrane method printing waste water processing system and method |
-
2018
- 2018-06-14 CN CN201810348211.2A patent/CN108658368A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731716A (en) * | 2014-12-06 | 2016-07-06 | 哈尔滨金大环境工程有限公司 | Starch waste water treatment apparatus and method |
| CN106242189A (en) * | 2016-08-30 | 2016-12-21 | 安徽银河皮革有限公司 | A kind of process hides Water Sproading Biochemical method technique |
| CN206720972U (en) * | 2017-03-20 | 2017-12-08 | 天津黛青生物科技有限公司 | A kind of medicine adornment wastewater treatment integrated apparatus |
| CN108033654A (en) * | 2018-01-23 | 2018-05-15 | 中信环境技术（广州）有限公司 | A kind of embrane method printing waste water processing system and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110902957A (en) * | 2019-12-06 | 2020-03-24 | 山东海景天环保科技股份公司 | Method for realizing synchronous desulfurization and denitrification of leather wastewater by using sulfur autotrophic denitrification process |
| CN111153528A (en) * | 2020-01-22 | 2020-05-15 | 江苏鼎弘环境科技有限公司 | Method for treating chromium-containing wastewater in leather production |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181016 |
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