CN102674639A - Treatment process and treatment device of mink skin tanning waste water - Google Patents
Treatment process and treatment device of mink skin tanning waste water Download PDFInfo
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- CN102674639A CN102674639A CN2012101850771A CN201210185077A CN102674639A CN 102674639 A CN102674639 A CN 102674639A CN 2012101850771 A CN2012101850771 A CN 2012101850771A CN 201210185077 A CN201210185077 A CN 201210185077A CN 102674639 A CN102674639 A CN 102674639A
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Abstract
The invention discloses a treatment process of mink skin tanning waste water. The treatment process includes the following steps: S1 enabling the mink skin waste water produced after tanning treatment to pass through a grating to be subjected to flocculent precipitation treatment and removing various solid suspended objects in the waste water; S2 conducting aeration stirring on the waste water subjected to precipitation treatment to achieve the average-value average-quantity function; S3 conducting eddy current gas floating on sewage subjected to aeration adjustment under effect of coagulants to remove pollutants such as suspended solids (SS) and COD; S4 mixing tanning waste water subjected to gas floating with life sewage and diluting salt and the COD in the tanning waste water; S5 conducting precipitation, micro filtering and separation on the biochemical effluent; and S6 conducting adsorption and filtering on the separated water through activated carbon and conducting high-grade catalytic oxidation on the separated water through ozone to obtain standard water. A device for achieving the process is further disclosed. The treatment process and the device treat the waste water produced in mink skin tanning treatment, and the treated water completely meets the secondary discharge standard requirement of the GBI 8918-2002 pollutant discharge standard of the town sewage treatment factory.
Description
Technical field
The invention belongs to technical field of waste water processing, particularly a kind of mink skin is at the treatment process and the device of the tanning waste water that carries out tanning processing back generation.
Background technology
The Along with people's growth in the living standard; The human consumer is also increasingly high to the requirement of quality of the life; The leather and fur industry is influenced by this to demonstrate fast development trend; Mink skin is one of world's fur three big important actors, and in great demand as the mink skin of mink clothes, mink ornaments, mink toy and mink household raw material, mink skin tanning processing industry development space is wide thereupon.Its fur is precious, soft, and suitable for making frieze overcoat, fur cap, skin sleeve etc. after its tanning can be divided into according to grade: selected, positive season skin, whole body lint is sufficient, flexible, concordant, solid colour, good luster, high resilience, zero defect; One-level, positive season skin, whole body lint is complete, solid colour, glossy and elasticity, under hair is slightly empty, does not have wounded or disabled; Secondary, lint are slightly empty owes alive clever, and the color basically identical owes smooth, and there is little permanent disability the part, so the difference of tannery quality will directly have influence on the quality grade of fur.
Along with of the transfer of world market fur tanning dyeing processing industry to China and other developing countries; China has become global fur manufacturing and consumption big country; But most domestic processing enterprise fur tanning processing technology falls behind; Make that product harmful chemical content is higher, and the water resources consumption amount is big, and the waste water that it produces has serious pollution after tanning.
Characteristic through analyzing tanning waste water knows that there are following characteristics in it:
1, discharging is discontinuous, and water quality, the water yield have than great fluctuation process with the production technique variation;
2, the water quality composition is complicated, though B/C value (biodegradability) still can, the waste water saltness is high, sulfide content is high, in the processing in a large number in the use of auxiliarys and the waste water solvability lipid influenced biochemical system steady running;
3, weakly alkaline waste water;
4, hair, mud, chip, meat slag are a lot, are difficult to cleaning in time.
But move can't major cause analysis up to standard following at present through Waste Water Treatment:
1, no rational grill designs and just heavy unit---one of principal character of leather-making waste water is that source waste water carries a large amount of maos, bits and silt when discharging from the workshop; SS is very high; Solid-liquid separation means is wanted fully, handles considered Automatic sieve grid on a large scale and alleviates and safeguard intensity, be treated to and reduce the thickness grid that cost of investment can adopt the labor cleaning and cooperate the above preliminary sedimentation tank of residence time 8h on a small scale.The scene only is provided with simple coarse rack at present and does not have just heavy (the original design settling pit of mentioning is not seen), causes equalizing tank to bear just heavy function, not only loses the aerating regulation function but also be not easy to cleaning.Several engineering practice shows: reasonably just heavy (or other physical sepn) design can be removed 30% left and right sides COD.
2, another principal character of tanning waste water is that saltiness is higher, generally all can suppress the biological activity of back biochemical system---many these type of waste water pollution treatment engineering operation failures are all owing to having ignored this contradiction.The original design of this project do not adopted an effective measure to the high salt of waste water equally, so rearmounted biochemical unit can not normally play a role.
3, biochemical unit load design is unreasonable, acidication, and the bio-contact oxidation residence time is obviously not enough.
4, air supporting is too little, and its load does not reach the standard that existing water quality and quantity is handled fully, must enlarge the pond and hold and prolong the air supporting residence time, and the air-dissolving air-float that changes original complicated operation is eddy current air supporting simple to operate.
5, sewage does not have advanced treatment, is difficult to reuse up to standard.
Therefore to problem set forth above, a kind of way that is used to solve of necessary design promptly designs cover technology and device and solves.
Summary of the invention
First purpose of the present invention be to provide a kind of can the treating water fur at the mink skin tanning waste water treatment process of tanned contaminated wastewater.
Second purpose of the present invention is to provide a kind of device of realizing above-mentioned mink skin tanning waste water treatment process.
In order to realize first purpose of above-mentioned proposition, the present invention provides following technical scheme: a kind of mink skin tanning waste water treatment process may further comprise the steps:
S1, the mink skin tanning waste water that will pass through after tanning is handled is handled through grid, flocculation sediment, removes the various outstanding admittedly thing in the waste water;
S2 all measures function with the waste water after the step S1 precipitation process through aeration agitation realization average;
S3 passes through the sewage after the step S2 aerating regulation at SEPIGEL 305 CH
2CHCONH
2And Poly aluminum Chloride (PAC) AL
2(OH) L
nCL
6-nMedicine help to coagulate down and remove SS, COD pollutent through eddy current air supporting;
S4 mixes the tanning waste water after the step S3 air supporting with sewage, salinity and COD in the dilution tanning waste water;
S5, with step S4 bio-chemical effluent precipitate, micro-filtration separates;
S6, the water after step S5 separated be through the senior catalysed oxidn of charcoal absorption filtration and ozone, obtains the standard water after the said processing;
Preferably, the SEPIGEL 305 CH among the said step S3
2CHCONH
2Content be 500-800g, said Poly aluminum Chloride (PAC) AL
2(OH) L
nCL
6-nContent for for 1-5g.
Preferably, the various outstanding admittedly things after will passing through said grid, flocculation sediment and handling: hair, meat slag, chemical sludge, active excess sludge are pressed into and get into boiler behind the mud cake and burn or transport outward.
In order to realize second purpose of above-mentioned proposition; The present invention provides a kind of device of realizing above-mentioned mink skin tanning waste water treatment process; Comprise the mechanical grid, flocculation sedimentation tank, aerating regulation pond, efficient air-floating system, hydrolysis acidification pool, first contact-oxidation pool, oxygen compatibility pool, second contact-oxidation pool, the tube settler that pass through pipe connection successively; Fibrous filtering pool, activated carbon filter and catalytic ozonation tower; Be equipped with the negative pressure filtration device on the connecting tube of said fibrous filtering pool and activated carbon filter and activated carbon filter and catalytic ozonation tower; Said mechanical grid, flocculation sedimentation tank are used for the mink skin waste water after handling through tanning is handled through grid, flocculation sediment, remove the various outstanding admittedly thing in the waste water; Said aerating regulation pond is used for placing the aerating regulation pond all to measure function through aeration agitation realization average the waste water after grid, the flocculation sediment processing; The waste water that said efficient air-floating system will pass through after handle in the aerating regulation pond is removed SS, COD pollutent through eddy current air supporting; Said hydrolysis acidification pool is used for mix salinity and COD in the dilution tanning waste water with sewage through the tanning waste water after the air supporting of efficient air-floating system; Said first contact-oxidation pool, oxygen compatibility pool and second contact-oxidation pool are used for the water after the said hydrolysis acidification pool processing is carried out catalytic oxidation; The biodegradability of biochemical system can be improved; Thereby reduce the interpolation of medicament, reduce the secondary pollution of chemical substances such as medicament; Water after said tube settler, fibrous filtering pool are used for contact-oxidation pool handled precipitates, micro-filtration and separating; Said activated carbon filter, catalytic ozonation tower are used for the senior catalysed oxidn of the water after the above separation through charcoal absorption filtration and ozone.
Preferably, said efficient air-floating system comprises corundum formula negative pressure micro-strainer and the air flotation cell that is attached thereto.
Preferably, said catalytic ozonation tower links to each other with ozonizer.
Preferably; Also comprise sludge thickener, plate-and-frame filter press; Said sludge thickener links to each other with flocculation sedimentation tank, aerating regulation pond, efficient air-floating system, tube settler, activated carbon filter and plate-and-frame filter press through pipeline; Said plate-and-frame filter press also links to each other with mechanical grid; Said sludge thickener is used for reclaiming flocculation sedimentation tank, aerating regulation pond, efficient air-floating system, tube settler, the filtering outstanding admittedly thing of activated carbon filter, and said plate-and-frame filter press is used for the outstanding admittedly thing of sludge thickener and mechanical grid is pressed into mud cake.
Preferably, also comprise the boiler that links to each other with plate-and-frame filter press, said boiler is used for the mud cake of said plate-and-frame filter press compacting is burned.
Preferably, also comprise the outward transport equipment that links to each other with plate-and-frame filter press, said outward transport equipment is used for the mud cake of said plate-and-frame filter press compacting is transported outward.
After adopting above-mentioned technology and device, the present invention has following beneficial effect:
1, the tanning waste water after the present invention handles the mink skin tanning can directly be handled through this wastewater treatment equipment and treatment process, and the relative influent concentration of moisture emission concentration after handling has reduced each item contamination index greatly;
2, the water after the discharging can satisfy the requirement of state compulsory standard GB 18918-2002 " urban wastewater treatment firm pollutant emission standard " secondary discharge standard fully;
3, tanning waste water treatment process and device are simple, are easy to make, and have reduced the cost of tanning wastewater treatment.
Description of drawings
Fig. 1 is the schema that technology of the present invention realizes.
Fig. 2 is the frame diagram of the device of technology realization of the present invention.
Fig. 3 is the frame diagram of efficient air-floating of the present invention system.
Among the figure, 1, mechanical grid, 2, flocculation sedimentation tank, 3, the aerating regulation pond, 4, the efficient air-floating system; 5, hydrolysis acidification pool, 6, oxygen compatibility pool, 7, tube settler, 8, fibrous filtering pool, 9, activated carbon filter; 10, catalytic ozonation tower, 11, the negative pressure filtration device, 12, sludge thickener, 13, plate-and-frame filter press, 14, ozonizer; 41, corundum formula negative pressure micro-strainer, 42, air flotation cell, 61, first contact-oxidation pool, 62, second contact-oxidation pool.
Embodiment
Come the present invention is done further detailed explanation below in conjunction with specific embodiment.
Embodiment
Referring to shown in Figure 1, a kind of mink skin tanning waste water treatment process that the present invention provides, its step comprises;
S1, the mink skin waste water that will pass through after tanning is handled is handled through grid, flocculation sediment, removes the various outstanding admittedly thing in the waste water;
S2 all measures function with the waste water after the precipitation process among the step S1 through aeration agitation realization average;
S3, with the sewage after the aerating regulation among the step S2 through at the SEPIGEL 305 CH of 500-800g
2CHCONH
2And the Poly aluminum Chloride (PAC) AL of 1-5g
2(OH) L
nCL
6-nMedicine help to coagulate down and remove SS, COD pollutent through eddy current air supporting;
S4 mixes water outlet after the air supporting among the step S3 with a spot of tanning waste water and sewage, salinity and COD in the dilution tanning waste water;
S5, with the water outlet of step S4 mesophytization precipitate, micro-filtration separates;
S6 with the senior catalysed oxidn of the water after separating among the step S5 through charcoal absorption filtration and ozone, obtains the standard water after the said processing.
Referring to Fig. 2-shown in Figure 3; The device of the waste water treatment process that realization of the present invention is above-mentioned; It comprises successively mechanical grid 1 through pipe connection, flocculation sedimentation tank 2, aerating regulation pond 3, efficient air-floating system 4, hydrolysis acidification pool 5, first contact-oxidation pool 61, oxygen compatibility pool 6, second contact-oxidation pool 62, tube settler 7; Fibrous filtering pool 8, activated carbon filter 9 and catalytic ozonation tower 10 are equipped with negative pressure filtration device 11 on the connecting tube of said fibrous filtering pool 8 and activated carbon filter 9 and activated carbon filter 9 and catalytic ozonation tower 10.
In device of the present invention, described mechanical grid 1, flocculation sedimentation tank 2 are used for the mink skin waste water after handling through tanning is handled through grid, flocculation sediment, remove the various outstanding admittedly things in the waste water; Said aerating regulation pond 3 is used for placing the aerating regulation pond all to measure function through aeration agitation realization average the waste water after grid, the flocculation sediment processing; Water outlet was removed SS, COD pollutent through eddy current air supporting after 3 air supportings of aerating regulation pond will be passed through by said efficient air-floating system 4; Said hydrolysis acidification pool 5 is used for the tanning waste water after handling through efficient air-floating system 4 being mixed salinity and COD in the dilution tanning waste water with sewage; Water after first contact-oxidation pool 61, oxygen compatibility pool 6, second contact-oxidation pool 62 are used for said hydrolysis acidification pool 5 handled carries out catalytic oxidation; The biodegradability of biochemical system can be improved; Thereby reduce the interpolation of medicament, reduce the secondary pollution of chemical substances such as medicament; Water after said tube settler 7, fibrous filtering pool 8 are used for contact-oxidation pool 6 handled precipitates, micro-filtration and separating; Said activated carbon filter 9, catalytic ozonation tower 10 are used for the senior catalysed oxidn of the water after the above separation through charcoal absorption filtration and ozone contained ozone O in the catalytic ozonation tower 10
3, same catalytic ozonation tower 10 also can link to each other with ozonizer 14, with the convenient ozone supply O that continues
3, finally form the water quality of conformance with standard national standard.
In device of the present invention, efficient air-floating system 4 comprises corundum formula negative pressure micro-strainer 41 and the air flotation cell 42 that is attached thereto, and 3 water outlets of aerating regulation pond are thus lifted to air flotation cell 42 through corundum formula negative pressure micro-strainer 41, at the SEPIGEL 305 CH of 500-800g
2CHCONH
2And the Poly aluminum Chloride (PAC) AL of 1-5g
2(OH) L
nCL
6-nMedicine help to coagulate down and can further remove pollutents such as SS, COD through eddy current air supporting.
The present invention also comprises sludge thickener 12, plate-and-frame filter press 13; Said sludge thickener 12 links to each other with flocculation sedimentation tank 2, aerating regulation pond 3, efficient air-floating system 4, tube settler 7, activated carbon filter 9 and plate-and-frame filter press 13 through pipeline; Said plate-and-frame filter press 13 also links to each other with mechanical grid 1; Said sludge thickener 12 is used for reclaiming flocculation sedimentation tank 2, aerating regulation pond 3, efficient air-floating system 4, tube settler 7, activated carbon filter 9 filtering outstanding admittedly things, and said plate-and-frame filter press 13 is used for the outstanding admittedly thing of sludge thickener 12 and mechanical grid 1 is pressed into mud cake.
In addition, the present invention also comprises boiler or the outward transport equipment that links to each other with plate-and-frame filter press 13, and wherein, boiler is used for the mud cake of said plate-and-frame filter press 13 compactings is burned, and wherein, outward transport equipment is used for the mud cake of plate-and-frame filter press 13 compactings is transported outward processing.
In above-mentioned tanning wastewater treatment equipment, repeatedly test according to above-mentioned treatment process and can obtain following experimental data:
One, tanning waste water---each item principal pollutant average index such as the table 1 before handling:
Tanning waste water each item pollutent index before table 1 is handled
| Title | Influent concentration |
| PH | 4.5～6.5 |
| Colourity (doubly) | 200-400 |
| SS(mg/L) | 1500-2000 |
| BOD5(mg/L) | 1000-1300 |
| CODcr(mg/L) | 2500-3000 |
| Sulfide (mg/L) | 80～150 |
Two, the index such as the table 2 that after through waste water treatment process of the present invention and treatment unit processing, obtain:
Each item pollutent index after the table 2 tanning wastewater treatment
| Title | Emission concentration |
| PH | 6～9 |
| Colourity (doubly) | 40 |
| SS(mg/L) | 28 |
| BOD5(mg/L) | 30 |
| CODcr(mg/L) | 92.5 |
| Sulfide (mg/L) | 1.0 |
After through top test, can find out that from table 1 and table 2 each item pollutent index all reduces greatly, and the index after reducing meets the requirement of GB 18918-2002 " urban wastewater treatment firm pollutant emission standard " secondary discharge standard.
The foregoing description is a preferred implementation of the present invention; But embodiment of the present invention is not restricted to the described embodiments; And other any do not deviate from change, the modification done under spirit of the present invention and the principle, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (9)
1. mink skin tanning waste water treatment process is characterized in that: may further comprise the steps:
S1, the mink skin tanning waste water that will pass through after tanning is handled is handled through grid, flocculation sediment, removes the various outstanding admittedly thing in the waste water;
S2 all measures function with the waste water after the precipitation process among the step S1 through aeration agitation realization average;
S3 passes through the sewage after the aerating regulation among the step S2 at SEPIGEL 305 CH
2CHCONH
2And Poly aluminum Chloride (PAC) AL
2(OH) L
nCL
6-nMedicine help to coagulate down and remove SS, COD pollutent through eddy current air supporting;
S4 mixes the tanning waste water after the air supporting among the step S3 with sewage, salinity and COD in the dilution tanning waste water;
S5, with the water outlet of step S4 mesophytization precipitate, micro-filtration separates;
S6 is with the senior catalysed oxidn of the water after separating among the step S5 through charcoal absorption filtration and ozone, the standard water after obtaining handling.
2. mink skin tanning waste water treatment process according to claim 1 is characterized in that: SEPIGEL 305 CH among the said step S3
2CHCONH
2Content be 500-800g, said Poly aluminum Chloride (PAC) AL
2(OH) L
nCL
6-nContent for for 1-5g.
3. mink skin tanning waste water treatment process according to claim 1 is characterized in that: the various outstanding admittedly things after will passing through said grid, flocculation sediment and handling: hair, meat slag, chemical sludge, active excess sludge are pressed into and get into boiler behind the mud cake and burn or transport outward.
4. device of realizing above-mentioned mink skin tanning waste water treatment process; It is characterized in that: comprise the mechanical grid (1), flocculation sedimentation tank (2), aerating regulation pond (3), efficient air-floating system (4), hydrolysis acidification pool (5), first contact-oxidation pool (61), oxygen compatibility pool (6), second contact-oxidation pool (62), the tube settler (7) that pass through pipe connection successively; Fibrous filtering pool (8), activated carbon filter (9) and catalytic ozonation tower (10); Be equipped with negative pressure filtration device (11) on the connecting tube of said fibrous filtering pool (8) and activated carbon filter (9) and activated carbon filter (9) and catalytic ozonation tower (10); Said mechanical grid (1), flocculation sedimentation tank (2) are used for the mink skin waste water after handling through tanning is handled through grid, flocculation sediment, remove the various outstanding admittedly thing in the waste water; Said aerating regulation pond (3) is used for placing the aerating regulation pond all to measure function through aeration agitation realization average the waste water after grid, the flocculation sediment processing; The tanning waste water that said efficient air-floating system (4) will pass through after handle in aerating regulation pond (3) is removed SS, COD pollutent through eddy current air supporting; Said hydrolysis acidification pool (5) is used for mix salinity and COD in the dilution tanning waste water with sewage through the tanning waste water after efficient air-floating system (4) air supporting; Said first contact-oxidation pool (61), oxygen compatibility pool (6) and second contact-oxidation pool (62) are used for the water after said hydrolysis acidification pool (5) processing is carried out catalytic oxidation; Water after said tube settler (7), fibrous filtering pool (8) are used for contact-oxidation pool (6) handled precipitates, micro-filtration and separating; Said activated carbon filter (9), catalytic ozonation tower (10) are used for the senior catalysed oxidn of the water after the above separation through charcoal absorption filtration and ozone.
5. the device of the above-mentioned mink skin tanning of realization according to claim 4 waste water treatment process is characterized in that: the air flotation cell (42) that said efficient air-floating system (4) comprises corundum formula negative pressure micro-strainer (41) and is attached thereto.
6. the device of the above-mentioned mink skin tanning of realization according to claim 4 waste water treatment process is characterized in that: said catalytic ozonation tower (10) links to each other with ozonizer (14).
7. the device of the above-mentioned mink skin tanning of realization according to claim 4 waste water treatment process; It is characterized in that: also comprise sludge thickener (12), plate-and-frame filter press (13); Said sludge thickener (12) links to each other with flocculation sedimentation tank (2), aerating regulation pond (3), efficient air-floating system (4), tube settler (7), activated carbon filter (9) and plate-and-frame filter press (13) through pipeline; Said plate-and-frame filter press (13) also links to each other with mechanical grid (1); Said sludge thickener (12) is used for reclaiming flocculation sedimentation tank (2), aerating regulation pond (3), efficient air-floating system (4), tube settler (7), the filtering outstanding admittedly thing of activated carbon filter (9), and said plate-and-frame filter press (13) is used for the outstanding admittedly thing of sludge thickener (12) and mechanical grid (1) is pressed into mud cake.
8. the device of the above-mentioned mink skin tanning of realization according to claim 7 waste water treatment process is characterized in that: also comprise the boiler that links to each other with plate-and-frame filter press (13), said boiler is used for the mud cake of said plate-and-frame filter press (13) compacting is burned.
9. the device of the above-mentioned mink skin tanning of realization according to claim 7 waste water treatment process; It is characterized in that: also comprise the outward transport equipment that links to each other with plate-and-frame filter press (13), said outward transport equipment is used for the mud cake of said plate-and-frame filter press (13) compacting is transported outward.
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|---|---|---|---|
| CN2012101850771A CN102674639A (en) | 2012-06-07 | 2012-06-07 | Treatment process and treatment device of mink skin tanning waste water |
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| CN103086490A (en) * | 2013-03-08 | 2013-05-08 | 大庆腾辉石油工程技术服务有限公司 | Organic high-polymer coagulant aid |
| CN104250056A (en) * | 2013-06-28 | 2014-12-31 | 中国石油化工股份有限公司 | Processing method of tertiary oil recovery surfactant production sewage |
| CN104591477A (en) * | 2014-12-19 | 2015-05-06 | 宿州学院 | Method for treating tannery wastewater by virtue of modified high-calcium desulfurized fly ash |
| CN108529821A (en) * | 2018-04-25 | 2018-09-14 | 青铜峡市祥云皮草有限责任公司 | Sheepskin processes effluent cycle and utilizes processing system and treatment process |
| CN110451733A (en) * | 2019-08-27 | 2019-11-15 | 安徽环境科技集团股份有限公司 | A kind for the treatment of process of leather-making waste water |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103086490A (en) * | 2013-03-08 | 2013-05-08 | 大庆腾辉石油工程技术服务有限公司 | Organic high-polymer coagulant aid |
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| CN108529821A (en) * | 2018-04-25 | 2018-09-14 | 青铜峡市祥云皮草有限责任公司 | Sheepskin processes effluent cycle and utilizes processing system and treatment process |
| CN110451733A (en) * | 2019-08-27 | 2019-11-15 | 安徽环境科技集团股份有限公司 | A kind for the treatment of process of leather-making waste water |
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