CN206014598U - A kind of leather waste water processing system up to standard - Google Patents
A kind of leather waste water processing system up to standard Download PDFInfo
- Publication number
- CN206014598U CN206014598U CN201620776875.5U CN201620776875U CN206014598U CN 206014598 U CN206014598 U CN 206014598U CN 201620776875 U CN201620776875 U CN 201620776875U CN 206014598 U CN206014598 U CN 206014598U
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- Prior art keywords
- sludge
- waste water
- pond
- preliminary sedimentation
- tank
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Abstract
The utility model discloses a kind of leather waste water processing system up to standard, including be sequentially connected by pipeline preliminary sedimentation tank, regulating reservoir, reaction tank, preliminary sedimentation tank, hydrolysis acidification pool, A2/O4Aerobic Pond and second pond, leather waste water preliminary sedimentation tank is neutralized and flocculation treatment, regulating reservoir adjusts the water quality and the water yield of waste water, the Organic substance that reaction tank is added in PAC and PAM flocculation waste water forms particulate matter, hydrolysis acidification pool makes macromole, Recalcitrant chemicals become small molecule, degradable pollutant, A2/O4Aerobic Pond organics removal and denitrogenation dephosphorizing, second pond carry out mud-water separation.The sludge of the preliminary sedimentation tank and preliminary sedimentation tank flows into sludge concentration tank, and 20% sludge reflux of the second pond is to hydrolysis acidification pool, 60% sludge reflux to A2/O4Aerobic Pond and 20% sludge drain into sludge concentration tank.Leather waste water provided by the utility model processing system up to standard, the characteristics of for leather sewage, using two-stage physico-chemical precipitation+hydrolysis acidification pool+A2/O4Process route based on Aerobic Pond, realizes the qualified discharge of leather waste water.
Description
Technical field
This utility model is related to sewage disposal, more particularly to a kind of leather waste water processing system up to standard.
Background technology
Certain industrial chemicals, acid, alkali salt, sodium sulfide, oils and fatss, dyestuff etc. are added in process in leather, is produced
Waste liquid continuously discharge sometimes, sometimes interval discharge, these waste water of discharge are the topmost sources of Leather-Industrial Pollution, should
The water quality characteristicses of class waste water are the turbid ashes of outward appearance, and colourity is high, and pollutant levels are high, and float amount is more, also containing substantial amounts of protein,
The inorganic salt such as the Organic substances such as fat, dyestuff and sulfide.
In order that leather waste water qualified discharge, traditional method is which causes follow-up life by the way of one-level materialization
The volume of changing pond is big, the problems such as floor space is big, fan delivery is big, this utility model adopts two-stage physico-chemical precipitation+hydrolysis acidification
Pond+A2/O4Process route based on Aerobic Pond, by process after sewage reach《Integrated wastewater discharge standard》（GB8978-1996）
In grade III Standard.
Utility model content
For overcoming the shortcomings and deficiencies of prior art, this utility model to provide a kind of leather waste water processing system up to standard.
The technical solution of the utility model is：
A kind of leather waste water processing system up to standard, including be sequentially connected by pipeline preliminary sedimentation tank, regulating reservoir, reaction tank,
Preliminary sedimentation tank, hydrolysis acidification pool, A2/O4Aerobic Pond and second pond；The sludge of the preliminary sedimentation tank and preliminary sedimentation tank separately flows into sludge condensation
Pond, the sludge of the second pond is through sludge pump partial reflux to A2/O4Aerobic Pond, partial reflux are to hydrolysis acidification pool, excess sludge
Sludge concentration tank is drained into, the sludge of sludge concentration tank turns to remove sludge press filtration after concentration.
Preferably, the leather waste water is intercepted through grid from workshop first and removes larger float in waste water, drift,
Grid is that mechanical fine fack, grid water outlet flow into preliminary sedimentation tank certainly.
Preferably, FeSO is added in preliminary sedimentation tank4, for removing the fibrous matter in leather waste water and solid particulate matter
Matter, preliminary sedimentation tank water outlet is from the regulating reservoir for flowing into regulating water quality and the water yield.
Preferably, elevator pump is placed with the regulating reservoir, by waste water lifting in regulating reservoir to reaction tank, in reaction tank
Fibrous matter and solid particulate matter are further removed under added PAC and PAM effects, and preliminary sedimentation tank water outlet flows into hydrolysis acidification pool.
Preferably, the hydrolysis acidification pool makes macromolecule contaminant in waste water become the dirt of small molecule contaminants, difficult degradation
Dye thing becomes degradable pollutant, and hydrolysis acidification pool water outlet flows into A certainly2/O4Aerobic Pond.
Preferably, the Aerobic Pond adopts A2/O4Mode operate, i.e., be composed in series by two-stage AOO mode, to greatest extent
Ground organics removal, A2/O4Aerobic Pond water outlet enters second pond, secondary clarifier effluent qualified discharge.
Preferably, the sludge of the second pond through sludge pump 60% be back to Aerobic Pond, 20% be back to hydrolysis acidification pool and
20% drains into sludge concentration tank, through gravity concentration after sludge again by screw rod be pumped to pressure filter dehydration, after dehydration filter cake outward transport.
The utility model has the advantages that：
Leather waste water provided by the utility model processing system up to standard, the characteristics of for leather sewage, using two-stage thing
Change precipitation+hydrolysis acidification pool+A2/O4Process route based on Aerobic Pond, by process after sewage reach《Integrated wastewater discharge mark
Accurate》（GB8978-1996）In grade III Standard.
Description of the drawings
Below in conjunction with the accompanying drawings and embodiment is further described to this utility model：
Fig. 1 is the structure principle chart of leather waste water described in the utility model processing system up to standard.
Specific embodiment
As shown in figure 1, leather waste water disclosed in this utility model processing system up to standard, including being sequentially connected by pipeline
Preliminary sedimentation tank, regulating reservoir, reaction tank, preliminary sedimentation tank, hydrolysis acidification pool, A2/O4Aerobic Pond and second pond, the preliminary sedimentation tank sink with just
The sludge in pond flows into sludge concentration tank, and 20% sludge reflux of the second pond is to hydrolysis acidification pool, 60% sludge reflux to A2/O4
Aerobic Pond and 20% sludge drain into sludge concentration tank.
Specifically, the leather waste water is intercepted through grid from workshop first and removes larger float in waste water, drift,
FeSO is added after grid before preliminary sedimentation tank is entered4Acid medicine, neutralizes waste water, makes the pH of waste water drop to 8 from 10, while wadding
Fibrous matter and solid particulate matter in solidifying waste water, the sludge of precipitation directly go sludge concentration tank, clear water to flow into regulating reservoir certainly.
Regulating reservoir is the water quality and the water yield for adjusting waste water, and regulating reservoir water outlet pumps into reaction tank.
The sludge of preliminary sedimentation tank precipitation directly goes sludge concentration tank, clear water to flow into hydrolysis acidification pool certainly.Add in reaction tank
PAC, makes the pH of waste water be reduced to 7 ± 0.2 from 8, makes fibrous matter and solid particulate matter in waste water form flco, is conducive to
The deposition efficiency of preliminary sedimentation tank, while adding PAM effects, makes floc particle, the water outlet of reaction tank from flowing into preliminary sedimentation tank, COD from
4000mg/L is reduced to 3200mg/L, and SS is reduced to 1000mg/L from 2000mg/L, realizes that COD clearances are removed for 20% and SS
Rate is 50%, and preliminary sedimentation tank water outlet flows into hydrolysis acidification pool certainly.
The hydrolysis acidification pool macromolecule contaminant becomes small molecule contaminants, the pollutant of difficult degradation become degradable
Pollutant, COD are reduced to 1600mg/L from 3200mg/L, realize COD clearances bring up to 7.3 for 50%, pH from 7 ± 0.2 ±
0.2, the organic loading of hydrolysis acidification pool is 2.5 ~ 3.0kgCOD/ (m3D), hydrolysis acidification pool water outlet flows into A certainly2/O4Aerobic
Pond.
The A2/O4Aerobic Pond organics removal and denitrogenation dephosphorizing, A2/O4Aerobic Pond is by two-stage AOO mode series connection group
Into, organics removal to greatest extent, COD are reduced to below 400mg/L from 1600mg/L, realize COD clearances more than 75%,
The organic loading of Aerobic Pond is 0.8 ~ 1.0kgCOD/ (m3D), A2/O4The water outlet of Aerobic Pond carries out muddy water from second pond is flowed into
Separate, second pond adopts radical sedimentation basin, surface loading is 0.6 ~ 0.7m/h, and the sedimentation time is 2.5 ~ 3.5 hours, second pond
Standard water discharge is discharged, and the sludge of precipitation is back to Aerobic Pond, 20% is back to hydrolysis acidification pool and 20% and drains into dirt through sludge pump 60%
Mud thickener, the clear water of second pond reach《Integrated wastewater discharge standard》（GB8978-1996）In grade III Standard.
Above-described embodiment only for technology design of the present utility model and feature are described, its object is to allow and be familiar with technique
People will appreciate that content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this.All
The modification done by spirit according to this utility model main technical schemes, should all cover in protection domain of the present utility model
Within.
Claims (2)
1. a kind of leather waste water processing system up to standard, it is characterised in that：Including be sequentially connected by pipeline preliminary sedimentation tank, regulation
Pond, reaction tank, preliminary sedimentation tank, hydrolysis acidification pool, A2/O4Aerobic Pond and second pond；The sludge of the preliminary sedimentation tank and preliminary sedimentation tank flows respectively
Enter sludge concentration tank, the sludge of the second pond is through sludge pump partial reflux to A2/O4Aerobic Pond, partial reflux are to hydrolysis acidification
Pond, excess sludge drain into sludge concentration tank, and the sludge of sludge concentration tank turns to remove sludge press filtration after concentration.
2. leather waste water according to claim 1 processing system up to standard, it is characterised in that：It is placed with the regulating reservoir and carries
Pump is risen, and by waste water lifting in regulating reservoir to reaction tank, in reaction tank, fibre object is further removed under added PAC and PAM effects
Matter and solid particulate matter, preliminary sedimentation tank water outlet flow into hydrolysis acidification pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620776875.5U CN206014598U (en) | 2016-07-22 | 2016-07-22 | A kind of leather waste water processing system up to standard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620776875.5U CN206014598U (en) | 2016-07-22 | 2016-07-22 | A kind of leather waste water processing system up to standard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206014598U true CN206014598U (en) | 2017-03-15 |
Family
ID=58246719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620776875.5U Expired - Fee Related CN206014598U (en) | 2016-07-22 | 2016-07-22 | A kind of leather waste water processing system up to standard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206014598U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007239A (en) * | 2016-07-22 | 2016-10-12 | 苏州苏沃特环境科技有限公司 | Standard meeting treatment system for tannery wastewater |
-
2016
- 2016-07-22 CN CN201620776875.5U patent/CN206014598U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106007239A (en) * | 2016-07-22 | 2016-10-12 | 苏州苏沃特环境科技有限公司 | Standard meeting treatment system for tannery wastewater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170315 Termination date: 20210722 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |