CN205473076U - Pretreatment systems of process hides waste water - Google Patents
Pretreatment systems of process hides waste water Download PDFInfo
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- CN205473076U CN205473076U CN201620096199.7U CN201620096199U CN205473076U CN 205473076 U CN205473076 U CN 205473076U CN 201620096199 U CN201620096199 U CN 201620096199U CN 205473076 U CN205473076 U CN 205473076U
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- waste water
- chromium
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- leather
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Abstract
The utility model discloses a pretreatment systems of process hides waste water aims at providing the preliminary treatment effect that can improve process hides waste water, reduces follow -up waste water treatment burden to simplifying pipe network layout, making things convenient for control and management pretreatment systems, its technical scheme main points are: include and contain sulphur waste water treatment collecting pit and contain chromium waste water treatment collecting pit, it has connected gradually first grid pond to contain sulphur waste water treatment collecting pit, sulphur sewage adjusting pool, sulphur sewage reaction tank and sulphur waste water sedimentation pond, chromium -containing wastewater handles the collecting pit and has connected gradually second grid pond, chromium sewage adjusting pool, chromium sewage reaction tank and chromium waste water sedimentation pond, chromium sewage adjusting pool is connected with sulfur dioxide generating device, sulphur sewage reaction tank and chromium sewage reaction tank all are connected with alkaline reducer charge device, sulphur waste water sedimentation pond and chromium waste water sedimentation pond all are connected with coagulant charge device.
Description
Technical field
This utility model relates to technical field of waste water processing, more specifically, it relates to the pretreatment system of a kind of leather-making waste water.
Background technology
Leather-making waste water is the waste water discharged in leather production, and usual animal skins is with salted or be soaked in water so that it is swelling, adds Calx, fleshing, dealkalize, and then with tannin or chromium, tanning stuffing softens, and last Colour Difference makes leather；Leather industry produces several workshop sections such as generally comprising defat, liming depilation, softening, tanning, Colour Difference, dry, ornamenting, the course of processing needs add multi-chemical, so that containing multiple pollutant matter and noxious substances such as oils and fats, collagen protein, animal and plant fiber, organic-inorganic solid content, sulfide, chromium, salt, surfactant, dyestuffs in waste water.
Sulfur-containing waste water and chromate waste water contain sulfide and the heavy metal chromium of high concentration respectively, it is unfavorable for the process up to standard of sewage, if processing after sulfur-bearing, chromate waste water being mixed together with other comprehensive wastewaters, the burden of waste water subsequent treatment can be increased, causing cost of sewage disposal excessive；The preprocess method of sulfur-containing waste water has acidization, chemical precipitation method and oxidizing process, chromate waste water pretreatment typically uses alkaline precipitation, traditional preprocess method is to use the series operation of reaction of high order pond, there is the shortcomings such as floor space is big, pipe net arrangement is loaded down with trivial details, chemical consumption amount big, mud generation amount is big, operational management is difficult, based on above-mentioned operation present situation, in the urgent need to the pretreatment system of existing leather-making waste water is made improvements.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is to provide a kind of pretreating effect meeting and can improving leather-making waste water containing the leather-making waste water such as chromium or sulfur, reduce subsequent wastewater treatment burden, and simplify pipe net arrangement, the pretreatment system of the convenient leather-making waste water controlling management.
For achieving the above object, this utility model provides following technical scheme:
A kind of pretreatment system of leather-making waste water, process collecting pit including sulfur-containing waste water and chromate waste water processes collecting pit, described sulfur-containing waste water processes collecting pit and is connected with the first grid pond in turn, sulfur sewage regulating reservoir, sulfur sewage reaction tank and sulfur detention tank, described chromate waste water processes collecting pit and is connected with the second grid pond in turn, chromium sewage regulating reservoir, chromium sewage reaction tank and chromium detention tank, described chromium sewage regulating reservoir connects sulfur dioxide generating means, described sulfur sewage reaction tank and chromium sewage reaction tank are respectively connected with alkaline reducer chemicals dosing plant, described sulfur detention tank and chromium detention tank are respectively connected with coagulant drug-adding device.
It is arranged such, the sulfur that collecting pit can process in leather-making waste water targetedly is processed by arranging sulfur-containing waste water process collecting pit and chromate waste water, chromium heavy metal substance, first grid pond and the second grid pond can effectively be filtered in leather-making waste water as large quantities of lime, onal, hair, the dregs of fat, the float such as meat slag, by the water yield and the regulation of water quality in sulfur sewage regulating reservoir and chromium sewage regulating reservoir, pH value of sewage water in leather-making waste water can be regulated, water temperature, also has preaeration effect, to water quality, the regulation of the water yield is the guarantee of anaerobic reaction stable operation, connecting at chromium sewage regulating reservoir has sulfur dioxide generating means that the chromium advanced person's shape in leather-making waste water can be made to be acidified, carry out the pretreatment of chromium in advance；Sulfur sewage reaction tank and chromium sewage reaction tank carry out the interpolation of medicine by chemicals dosing plant, sulfur in leather-making waste water and chromium can be carried out corresponding chemical reaction, change its corresponding characteristic, the leather-making waste water neutralized by dosing in the reaction tank of upper strata can be made to precipitate by sulfur detention tank and chromium detention tank again, the condensation degree of the float of sulfur and chromium after it processes can be improved by adding corresponding coagulant, making the material after neutralization quickly solidify separation, the portion of carrying out reaches sulfur in leather-making waste water, the separation of chromium metal pollutant.
Arrange further: the supernatant of described sulfur detention tank and chromium detention tank connects comprehensive wastewater treatment system.
It is arranged such, leather-making waste water after overregulating precipitation also has some other metal pollutant, can improve the degree for the treatment of of leather-making waste water the unified collection of leather-making waste water after processing is carried out integrated treatment, the carrying out making waste water more up to standard is discharged, and reduces the pollution to environment.
Arrange further: described comprehensive wastewater treatment system connects biochemical system.
It is arranged such, biosystem processes leather-making waste water and relies on the function bacterium of artificial culture, and it has electrostatic adsorption, the catalyzed conversion effect of enzyme, complexing, flocculation, contains co-precipitation and the cushioning effect to pH value, and this method is simple to operate, equipment is safe and reliable, discharge water is for cultivation and other use, and sludge quantity is few, and metal in sludge recycles, achieve cleaning to produce, without sewage and waste sludge discharge, small investment, energy consumption is low, and operating cost is few.
Arrange further: described biochemical system is provided with batch biofilm reactor.
It is arranged such, batch biofilm reactor is to add various filler in the reactor so that attached growth of microorganisms, make on filler, define one layer of biological structure being similar to film constituted, combine with other sewage disposal devices, reduce sewage disposal difficulty, thus improve surrounding enviroment, effectively contain the propagation of pathogenic bacteria.
Arrange further: described sulfur sewage reaction tank, chromium sewage regulating reservoir and chromium sewage reaction tank are equipped with power-assisted stirring slurry.
Being arranged such, increasing power-assisted stirring slurry during regulation can increase the mobility of liquid, waste water and adding medicine in pond and be uniformly sufficiently mixed, and in making pond, waste water is more abundant with drug reaction.
Arrange further: described first grid pond and the second grid pond include that coarse rack and fine fack, described coarse rack are arranged at fine fack upper strata.
It is arranged such, when leather-making waste water imports to grid pond from collecting pit, owing to leather-making waste water containing a large amount of float such as oils and fats, collagen protein, animal and plant fiber, organic-inorganic solid content, first pass through coarse rack and carry out the filtration of larger volume float, carrying out essence filtration through fine fack, filtering at twice and can improve float filter effect in leather-making waste water.
Arrange further: described sulfur detention tank connects sludge concentration tank.
It is arranged such, in order to the mud after precipitation effectively, process the most further, can be concentrated, sludge condensation mainly reduces the Interstitial Water of mud, reduce moisture percentage in sewage sludge, can effectively reduce sulfur sludge volume, concentrated after sulfur mud approximation pasty state, still keep mobility.
Arrange further: described chromium detention tank connects chromium mud acidification system.
Be arranged such, acidified after chromium mud become neutral salts substances, on the one hand can reduce the pollution to environment, on the other hand it can be reclaimed, by chromium METAL EXTRACTION therein out, increase its utilization rate.
By using technique scheme, this utility model hinge structure is compared: by arranging sulfur-containing waste water processing system and sulfur that system for processing chrome-containing wastewater can process in leather-making waste water targetedly, chromium heavy metal substance, sulfur in leather-making waste water and chromium are carried out corresponding chemical reaction, change its corresponding characteristic, by sulfur detention tank and chromium detention tank, leather-making waste water is precipitated again, the material after neutralization is made quickly to solidify separation, reach sulfur in leather-making waste water, the separation of chromium metal pollutant, improve the pretreating effect of leather-making waste water.
Accompanying drawing explanation
Fig. 1 is schematic flow sheet of the present utility model；
In figure: 1, sulfur-containing waste water processes collecting pit；2, chromate waste water processes collecting pit；3, the first grid pond；4, sulfur sewage regulating reservoir；5, sulfur sewage reaction tank；6, sulfur detention tank；7, the second grid pond；8, chromium sewage regulating reservoir；9, chromium sewage reaction tank；10, chromium detention tank；11, sulfur dioxide generating means；12, alkaline reducer chemicals dosing plant；13, coagulant drug-adding device；14, comprehensive wastewater treatment system；15, biochemical system；
16, sludge concentration tank；17, chromium mud acidification system.
Detailed description of the invention
With reference to Fig. 1, the pretreatment system of leather-making waste water is described further.
A kind of pretreatment system of leather-making waste water, process collecting pit 1 including sulfur-containing waste water and chromate waste water processes collecting pit 2, hot-doctor treatment system includes being connected with the first grid pond 3 in turn, sulfur sewage regulating reservoir 4, sulfur sewage reaction tank 5 and sulfur detention tank 6, chromate waste water processes collecting pit 2 and is connected with the second grid pond 7 in turn, chromium sewage regulating reservoir 8, chromium sewage reaction tank 9 and chromium detention tank 10, chromium sewage regulating reservoir 8 connects sulfur dioxide generating means 11, sulfur sewage reaction tank 5 and chromium sewage reaction tank 9 are respectively connected with alkaline reducer chemicals dosing plant 12, sulfur detention tank 6 and chromium detention tank 10 are respectively connected with coagulant drug-adding device 13.
nullThe sulfur in leather-making waste water is processed by specific aim、Chromium heavy metal substance，Sulfur-containing waste water is set and processes collecting pit 1 and chromate waste water process collecting pit 2，When leather-making waste water entered the first grid pond 3 and the second grid pond 7，Entered the coarse rack on grid pond and fine fack successively，Make the large quantities of lime in leather-making waste water、Onal、Hair、The dregs of fat、The float such as meat slag are effectively filtered，Again by sulfur sewage regulating reservoir 4 and chromium sewage regulating reservoir 8，By effect point: regulating reservoir is divided into homogenizing pond，Water yield Buffer Pool，Homogenizing all measures pond，Pond is all measured as preferably homogenizing，By the water yield and the regulation of water quality，The pH value dilution making sewage in regulation leather-making waste water reduces、Regulate suitable water temperature，Also has preaeration effect，And to water quality、The regulation of the water yield is also the guarantee of anaerobic reaction stable operation，Sulfur dioxide generating means 11 can make the chromium advanced person's shape in leather-making waste water be acidified，Leather-making waste water pH value is adjusted to 2～3，Carry out the pretreatment of chromium in advance，Adding reducing agent；nullSulfur sewage reaction tank 5 and chromium sewage reaction tank 9 carry out the interpolation of medicine by alkaline reducer chemicals dosing plant 12，Sulfur sewage reaction tank 5 and chromium sewage reaction tank 9 can carry out corresponding chemical reaction to the sulfur in leather-making waste water and chromium，Change its corresponding characteristic，Described alkaline reducer can be ferrous sulfate、Sodium hydroxide or calcium hydroxide，PH value is transferred to 7～8，Generate chromic oxide gel or precipitation of salts，By the leather-making waste water after SO 2 acidifying and generation chemical reaction，The chromium making sexavalence is converted into the chromium of trivalent，Corresponding coagulant is added again by sulfur detention tank 6 and chromium detention tank 10，As preferably，This programme sedimentation tank is horizontal tube sedimentation tank，It is at present closest to " breathing out true " shallow sheaf theoretic sedimentation tank，It is by precipitation tube horizontal positioned，Flow along horizontal line，Float vertical separation，There is precipitation and separation function，The condensation degree of the float of sulfur and chromium after it processes can be improved，Quickly solidified by the material after making neutralization，Carry out step and reach sulfur in leather-making waste water、The separation of chromium metal pollutant.
nullLeather-making waste water after overregulating precipitation also has some other metal pollutant，Supernatant at sulfur detention tank 6 and chromium detention tank 10 connects comprehensive wastewater treatment system 14，The unified collection of leather-making waste water after processing is being entered in biochemical system 15，Biochemical system 15 is provided with batch biofilm reactor，Biosystem processes leather-making waste water and relies on the function bacterium of artificial culture,It has electrostatic adsorption、The catalyzed conversion effect of enzyme、Complexing、Flocculation、Contain co-precipitation and the cushioning effect to pH value，Discharge water is for cultivation and other use，And sludge quantity is few，Metal in sludge recycles，Achieve cleaning to produce、Without sewage and waste sludge discharge，The degree for the treatment of of leather-making waste water can be improved，The carrying out making waste water more up to standard is discharged，Reduce the pollution to environment.
For improving mixing efficiency, power-assisted stirring slurry is added at sulfur sewage reaction tank 5, chromium sewage regulating reservoir 8 and chromium sewage reaction tank 9, during regulation, increase power-assisted stirring slurry can increase the mobility of liquid in pond, leather-making waste water and alkaline reducer are uniformly sufficiently mixed, and in making pond, waste water is more abundant with drug reaction；For to the mud after precipitation effectively, process the most further, connecting at sulfur detention tank 6 has sludge concentration tank 16 to concentrate, sludge condensation mainly reduces the Interstitial Water of mud, reduce moisture percentage in sewage sludge, can effectively reduce sulfur sludge volume, sulfur mud approximation pasty state after concentrated, still keep mobility, it is simple to carrying；Chromium is as heavy metal, it has and the highest utilizes recovery value, connect at chromium detention tank 10 and have chromium mud acidification system 17, chromium mud after acidified becomes neutral salts substances, on the one hand the pollution to environment can be reduced, on the other hand it can be reclaimed, be extracted, increase its economic worth.
By using technique scheme, by arranging sulfur-containing waste water processing system and sulfur that system for processing chrome-containing wastewater can process in leather-making waste water targetedly, chromium heavy metal substance, sulfur in leather-making waste water and chromium are carried out corresponding chemical reaction, change its corresponding characteristic, by sulfur detention tank 6 and chromium detention tank 10, leather-making waste water is precipitated again, the material after neutralization is made quickly to solidify separation, reach sulfur in leather-making waste water, the separation of chromium metal pollutant, improve the pretreating effect of leather-making waste water.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to above-described embodiment, and all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.It should be pointed out that, for those skilled in the art, without departing from the some improvements and modifications under this utility model principle premise, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (8)
- null1. the pretreatment system of a leather-making waste water，Process collecting pit (1) including sulfur-containing waste water and chromate waste water processes collecting pit (2)，It is characterized in that: described sulfur-containing waste water processes collecting pit (1) and is connected with the first grid pond (3) in turn、Sulfur sewage regulating reservoir (4)、Sulfur sewage reaction tank (5) and sulfur detention tank (6)，Described chromate waste water processes collecting pit (2) and is connected with the second grid pond (7) in turn、Chromium sewage regulating reservoir (8)、Chromium sewage reaction tank (9) and chromium detention tank (10)，Described chromium sewage regulating reservoir (8) connects sulfur dioxide generating means (11)，Described sulfur sewage reaction tank (5) and chromium sewage reaction tank (9) connect alkaline reducer chemicals dosing plant (12)，Described sulfur detention tank (6) and chromium detention tank (10) are respectively connected with coagulant drug-adding device (13).
- The pretreatment system of leather-making waste water the most according to claim 1, it is characterised in that: the supernatant of described sulfur detention tank (6) and chromium detention tank (10) connects comprehensive wastewater treatment system (14).
- The pretreatment system of leather-making waste water the most according to claim 2, it is characterised in that: described comprehensive wastewater treatment system (14) connects biochemical system (15).
- The pretreatment system of leather-making waste water the most according to claim 3, it is characterised in that: described biochemical system (15) is provided with batch biofilm reactor.
- The pretreatment system of leather-making waste water the most according to claim 1, it is characterised in that: described sulfur sewage reaction tank (5), chromium sewage regulating reservoir (8) and chromium sewage reaction tank (9) are equipped with power-assisted stirring slurry.
- The pretreatment system of leather-making waste water the most according to claim 1, it is characterised in that: described first grid pond (3) and the second grid pond (7) include that coarse rack and fine fack, described coarse rack are arranged at fine fack upper strata.
- The pretreatment system of leather-making waste water the most according to claim 1, it is characterised in that: described sulfur detention tank (6) connects sludge concentration tank (16).
- The pretreatment system of leather-making waste water the most according to claim 1, it is characterised in that: described chromium detention tank (10) connects chromium mud acidification system (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620096199.7U CN205473076U (en) | 2016-01-29 | 2016-01-29 | Pretreatment systems of process hides waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620096199.7U CN205473076U (en) | 2016-01-29 | 2016-01-29 | Pretreatment systems of process hides waste water |
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| Publication Number | Publication Date |
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| CN205473076U true CN205473076U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620096199.7U Expired - Fee Related CN205473076U (en) | 2016-01-29 | 2016-01-29 | Pretreatment systems of process hides waste water |
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| Country | Link |
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| CN (1) | CN205473076U (en) |
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2016
- 2016-01-29 CN CN201620096199.7U patent/CN205473076U/en not_active Expired - Fee Related
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| 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: 20160817 Termination date: 20210129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |