CN1202030C - Water water treating technique for algea processing industry - Google Patents
Water water treating technique for algea processing industry Download PDFInfo
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- CN1202030C CN1202030C CNB011273100A CN01127310A CN1202030C CN 1202030 C CN1202030 C CN 1202030C CN B011273100 A CNB011273100 A CN B011273100A CN 01127310 A CN01127310 A CN 01127310A CN 1202030 C CN1202030 C CN 1202030C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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Abstract
The present invention relates to a new technology for sewage treatment in seaweed treatment industry, which solves the problems of high biochemical difficulty of sewage treatment and high operation cost in seaweed treatment industry at present. The new technology comprises the following steps: pretreatment waste water for kelp, which is produced before the digestion treatment of the kelp, is biochemically treated; residual floating slag liquids obtained when a clear glue solution is collected after the digestion treatment of the kelp is singly separated and filtered, and an obtained glue solution is recycled in a production process; waste water produced in the aftertreatment of the water produced after the biochemical treatment and the collected clear glue solution are mixed and then are biochemically treated. The present invention has the characteristics of favorable biochemical effects, low operating cost, increase of economic benefits, little investment, etc.
Description
(1) technical field
The present invention relates to the sewage disposal of marine alga processing industry, special relevant with the sewage water treatment method of this processing industry.
(2) background technology
Existing is the processing enterprise of main material production sodium alginate, iodine, alcohol with the sea-tangle, and the situation of discharge of wastewater is as follows in whole process of production:
1, sea-tangle pretreated waste water
Mainly the waste water that is produced in the sea-tangle treating processes before the finger sea-tangle digestion process mainly is the sea-tangle washing water.As being that raw materials for production must carry out immersion treatment with dried sea-tangle, soak water and enter the iodohydrin production plant as the raw materials for production that extract iodohydrin, generally do not efflux; Soaked sea-tangle enters washing procedure, and this operation produces a large amount of washing water and effluxes, and quantity discharged accounts for about 30% of total release.It is mainly graded and is formed by small sea-tangle skin, silt, carbohydrate gum, alcohol, formaldehyde, polyose colloid, salt, and organic loading is higher, and pH value is neutral.
2, floating slag liquid
Sea-tangle enters floating operation through digestion process.Through floating collect clear glue solution after, residue weakly alkaline floating slag liquid effluxes, discharging slag liquid measure accounts for about 12% of total release.It mainly is made up of the sea-tangle piece of not complete digestion, sea-tangle fiber, carbohydrate gum, sodium alginate glue etc., the organic loading height, and wherein suspended substance (SS) accounts for more than 95% of quantity discharged, and pH value is about 8.
3, calcium is analysed waste water
The above-mentioned clear glue solution of collecting enters calcium and analyses operation, carries out producing a large amount of calcic waste water after the calcification processing, accounts for about 40% of total release, and major ingredient has Ca
2+, Mg
2+, Cl0
-, calcification glue particle etc., pH value is 8-9.
4, decalcification waste water
Calcium is analysed glue and is entered decalcification operation generation acid-bearing wastewater, and its pH value is about 2, and quantity discharged accounts for the 3-5% of total release.
5, the Lalgine after the squeeze water decalcification is through press dewatering operation discharging squeeze water, and its pH value is about 2, has a little seaweed gel particle, and quantity discharged accounts for about 5% of total release.But collect clear glue solution described in above-mentioned 3,4, the 5 described waste water appellations 2 it is carried out the waste water that following process produced.
At present, marine alga processing enterprise adopts calcium to analyse floating slag, sedimentation solid-liquid separation, composite wastewater to the improvement of above-mentioned sewage to carry out the aeration biochemical treatment process mostly.Because its aforementioned several Waste Water Centralized aftertreatments, the comprehensive water body salt content after this concentrating is higher, complicated component, the organic loading fluctuation is big, be unfavorable for microbial growth, must have influence on composite wastewater and carry out the effect that aeration biochemical is handled, make wastewater treatment efficiency not satisfactory.In addition, because the floating slag liquid in above-mentioned 2 directly is drained in the pending waste water, it has not only wasted a large amount of glues that contain in the floating slag liquid, also can bring very big disadvantageous effect to sewage disposal; It also has defectives such as investment is big, working cost is high, labour intensity is big.
(3) summary of the invention
Task of the present invention is to solve that prior art mesophytization intractability is big, the unfavorable problem of effect, and comparatively ideal treatment process of a kind of marine alga processing industry wastewater treatment efficiency is provided.
Further task of the present invention is on the basis that solves above-mentioned task, reclaims glue from floating slag liquid, increases economic benefit.
For realizing invention task one, technical solution of the present invention is:
Marine alga processing industry sewage water treatment method of the present invention has following steps:
A, the sea-tangle pretreated waste water that is produced before the sea-tangle digestion process carried out biological chemistry handle, promptly the sea-tangle pretreated waste water is carried out aeration oxygen replenishing biochemistry after, carry out the pulp water separation with the air supporting mode again, the water body that obtains after the separation enters step c
B, remaining floating slag liquid carries out individual curing when collecting clear glue solution after the sea-tangle digestion process; Described floating slag liquid individual curing is achieved in that or produces fertilizer with floating slag liquid; Or with the cagem type filter filter, its slag class drying and other treatment glue recycles; Or outward transport landfill; Or above-mentioned floating slag liquid added after flocculation agent carries out chemical flocculation, carry out roughing out through percolation machine, after the smart glue that obtains that filters enters the calcification operation of seaweed gel in producing.
C, the water body after above-mentioned steps a biological chemistry handled carry out waste water that following process the produced water body after comprehensive with the above-mentioned clear glue solution of collecting, and adopt the air supporting mode to carry out the pulp water separation, and isolated water liquid carries out filtration treatment.
The present invention carries out biochemical treatment separately to the sea-tangle pretreated waste water that accounts for total release about 30%, because its water conditioning, the characteristics that biodegradability is stronger, at this it is carried out biochemical treatment, having overcome prior art, this part waste water and follow-up many waste water to be carried out the biochemical treatment difficulty after comprehensive big, be difficult to the defective of realization, also overcome simultaneously in the prior art the inconvenient biochemical relatively large follow-up waste water in total release 60% left and right sides that accounts for has together been carried out the high problem of running cost that biochemical treatment brought, therefore, the sea-tangle pretreated water that accounts for total release about 30% is carried out independent biochemical treatment, except that treatment effect is arranged preferably, also can significantly reduce working cost, reduce the burden on enterprises.
As a further improvement on the present invention, it is to realize like this that the biological chemistry of above-mentioned steps a is handled, before carrying out aeration oxygen replenishing biochemistry, carry out the water correction of sea-tangle pretreated waste water and handle, it is a kind of natural rock mud stone of throwing in the pending waste water of water correction treating pond that this water correction is handled.Natural rock mud stone, quality is softer, and many grays, blue green, brown can not occur loosening in immersion process, the weathering phenomenon, its main amount SiO
2, Al
2O
3, Fe
2O
3, multiple oxide compound (percentage composition meter) such as NaO, tens kinds of elements (PPM level meter) such as Co, Zn, Sr, Zr, Rb, Ba, through facts have proved, utilization mud stone is improving processing to the above-mentioned water quality of waste water, pending waste water quality will be significantly improved, become clear, suspended substance increase etc. as water body by muddiness, help aeration oxygen replenishing biochemistry.This mud stone is distributed more widely in China, as the Northeast, Hebei, Shaanxi, Shandong, Jiangsu and other places distribution is arranged all.
For realizing task two of the present invention, on the basis of invention task one solution, the floating slag liquid of above-mentioned steps b carries out individual curing and is, above-mentioned floating slag liquid is added after flocculation agent carries out chemical flocculation, carry out roughing out through percolation machine, after the glue that smart filtration obtains enters the calcification operation in the seaweed gel production; This percolation machine adopts following structure, it has an outer screen cloth cylindrical body of wrapping up in that can turn round, the inner chamber of cylindrical body has a fixed to treat filter residue liquid transfer lime, treat that filter residue liquid transfer lime has liquid feeding end and outlet end, intrinsic somely turn round on the internal chamber wall of cylindrical body with cylindrical body, and perpendicular to the annular of the lumen centers axis of cylindrical body or near the straight flow deflector of annular, straight flow deflector is separated into some chambers with the inner chamber of cylindrical body, all chambers are connected successively by the porthole of offering on the straight flow deflector, all chambers are arranged and are followed successively by some filtering chamber, some percolating chamber, some deslagging chambers, all filtering chamber constitute fillter section, and all percolating chamber constitute the diafiltration section, and all deslagging chambers constitute the deslagging section, the slag liquid of above-mentioned outlet end output mainly sprays in the filtering chamber of fillter section, and above-mentioned deslagging section has slag-drip opening.Because the percolation machine that this process is used has the advantages that but the good filtration effect serialization is uninterruptedly carried out, has higher production efficiency, the glue that contains in the floating slag liquid can be recycled comparatively completely, as producing 18m in sea-tangle per ton (is 120 times of meters towards rare multiple)
3Floating slag liquid can get glue 15m through aforementioned filtration
3About, the glue solid content of this glue is more than 1.5 ‰, gets about about 22 kilograms of finished product sodium alginate, to produce 1 ton of sodium alginate daily, the seaweed gel finished product that every day is recyclable about 100 kilograms can increase considerable economic.Simultaneously, also overcome in the prior art floating slag liquid is drained into postorder, comprehensive together to handle the difficulty of being brought big with other waste water, defect of high cost.
The present invention also has advantages such as less investment, working cost be low, to produce one ton of sodium alginate daily, about about 700,000 yuan of gross investment, the about 40KW of total installation of generating capacity, the every M of composite wastewater processing costs (comprising the electricity charge, labour cost, maintenance cost etc.)
30.5 about unit.
(4) description of drawings
Fig. 1 is a kind of process flow sheet of step a
Fig. 2 is a kind of process flow sheet of step b
Fig. 3 is a kind of process flow sheet of step c
Fig. 4 is aforementioned percolation machine structural principle synoptic diagram
The drawing explanation: 1 for wrapping up in the screen cloth cylindrical body outward, and 2 for treating filter residue liquid transfer lime, and 3 is straight flow deflector, and 4 for leaching receiving channel, 5 is the porthole, and 6 is slag-drip opening, and 7 is liquid outlet, and 8 for treating filter residue liquid surge chamber, 9 is nozzle, and 10 is the cylindrical body left side brackets, and 11 is cylindrical body right side support.
(5) embodiment
The sea-tangle pretreated waste water that is produced before the sea-tangle digestion process is carried out biological chemistry handles, promptly the sea-tangle pretreated waste water is carried out aeration oxygen replenishing biochemistry after, carry out the pulp water separation with the air supporting mode again, the water body that obtains after the separation enters step c.This biochemical treatment can be adopted the prior art of sewage treatment area, as adopts aeration oxygen replenishing of the prior art, dissolved air flotation mode and facility.Certainly also can adopt other can realize the facility of aforesaid way.Before carrying out aeration oxygen replenishing biochemistry, can carry out the water correction of sea-tangle pretreated waste water and handle, it is to throw in a kind of natural rock mud stone to claim what green sandstone was realized again in the pending waste water of water correction treating pond (pretreatment pool) that this water correction is handled.This process flow process can be as shown in Figure 1.
Remaining floating slag liquid carries out individual curing when collecting clear glue solution after the sea-tangle digestion process.This individual curing is meant with floating slag liquid produces fertilizer, uses the filtration of cagem type filter, its slag class drying and other treatment glue to recycle, outward transport landfill or the like.Certainly, to adopt following manner is good, after promptly above-mentioned floating slag liquid adding flocculation agent being carried out chemical flocculation, flocculation agent adopts prior art to get final product, carry out roughing out through percolation machine, the glue that obtains enters the calcification operation of seaweed gel in producing after with filtrations such as plate and frame filter (smart filter), and its technical process can be shown as Fig. 2.Above-mentioned percolation machine adopts following structure (showing as Fig. 4), it has an outer cylindrical body of wrapping up in screen cloth that can turn round, the inner chamber of cylindrical body has a fixed to treat filter residue liquid transfer lime 2, transfer lime 2 has liquid feeding end and outlet end, treat that filter residue liquid transfer lime 2 drain pipes have nozzle 9, outlet end also can have tubulose to treat filter residue liquid surge chamber 8, surge chamber 8 is furnished with some nozzles of evenly arranging 9, intrinsic somely turn round on the internal chamber wall of cylindrical body with cylindrical body, and perpendicular to the annular of the lumen centers axis of cylindrical body or near the straight flow deflector 3 of annular, straight flow deflector is separated into some chambers with cylindrical body, the porthole 5 that all chambers are offered by straight flow deflector is connected successively, porthole 5 can be opened in the nearly cylindrical body inner chamber of flow deflector 3 edge, its quantity can be 1,2,3,4 grades are individual, with quantity 1,2 is good, and porthole 5 can be extended by the inside chamber of cavity edge in cylindrical body central axis, and this moment, each straight flow deflector can be divided into several portions.All chambers are arranged and are followed successively by some filtering chamber, some percolating chamber, some deslagging chambers, above-mentionedly somely can be 1,2,3,4,5 ... Deng, three's quantity can be inequality, all filtering chamber constitute fillter section I, all percolating chamber constitute diafiltration section II, all deslagging chambers constitute deslagging III, above-mentioned outlet end is mainly sprayed in fillter section I filtering chamber by the slag liquid of nozzle 9 outputs, and the deslagging section has slag-drip opening 6.Its principle of work is roughly, waiting to filter floating slag liquid enters surge chamber 8 by transfer lime 2 and is ejected into by nozzle 9 in the chamber of fillter section I, cylindrical body 1 average rate is rotated continuously, treat that filter residue liquid reaches the decomposing force of facilitating (multidirectional power) by it from gravity, centrifugal force in filtering chamber on flow deflector, and form good filtration channel and enough big filtration area, finish the big portion of filtration work in this section; Surplus slag liquid enters in the next chamber successively through the porthole of straight flow deflector, laggard chamber of going into diafiltration section II, its working process make the solid-liquid of surplus slag liquid be able to further separation with fillter section I at this section, and isolated slag thing is pushed in the deslagging chamber of deslagging section III, the back is discharged by slag-drip opening.So run without interruption, realize waiting to filter floating slag liquid serialization solid-liquid separation.
Water body after above-mentioned steps a biological chemistry handled carries out waste water that following process the produced water body after comprehensive and carries out the materialization processing with the above-mentioned clear glue solution of collecting, promptly adopt the air supporting mode to carry out pulp water to above-mentioned water body after comprehensive and separate, the water liquid that obtains (isolating) such as filters at processing; This materialization processing mode and facility adopt the sewage treatment area prior art to get final product.Its technical process can be as shown in Figure 3.
The present invention can summarize without prejudice to spirit of the present invention or principal character with other, above-mentioned embodiment is that explanation of the present invention is not limited the present invention, therefore, in implication suitable and any change in the scope, all should think to be included in the scope of claims with claims of the present invention.
Claims (3)
1, a kind of marine alga processing industry sewage water treatment method has following steps:
A, the sea-tangle pretreated waste water that is produced before the sea-tangle digestion process carried out biological chemistry handle, promptly the sea-tangle pretreated waste water is carried out aeration oxygen replenishing biochemistry after, carry out the pulp water separation with the air supporting mode again, the water body that obtains after the separation enters step c;
B, remaining floating slag liquid carries out individual curing when collecting clear glue solution after the sea-tangle digestion process; Described floating slag liquid carries out that individual curing is achieved in that or produces fertilizer with floating slag liquid; Or with the cagem type filter filter, its slag class drying and other treatment glue recycles; Or outward transport landfill; Or above-mentioned floating slag liquid added after flocculation agent carries out chemical flocculation, carry out roughing out through percolation machine, after the smart glue that obtains that filters enters the calcification operation of seaweed gel in producing.
C, the water body after above-mentioned steps a biological chemistry handled carry out waste water that following process the produced water body after comprehensive with the above-mentioned clear glue solution of collecting, and adopt the air supporting mode to carry out the pulp water separation, and isolated water liquid carries out filtration treatment.
2, sewage water treatment method according to claim 1, it is characterized in that: it is to realize like this that the biological chemistry of described step a is handled, before carrying out aeration oxygen replenishing biochemistry, carry out the water correction of sea-tangle pretreated waste water and handle, it is to throw in a kind of natural rock mud stone in the pending waste water of water correction treating pond that this water correction is handled.
3, sewage water treatment method according to claim 1 and 2, it is characterized in that: the floating slag liquid of described step b carries out individual curing and is, above-mentioned floating slag liquid is added after flocculation agent carries out chemical flocculation, carry out roughing out through percolation machine, after the glue that smart filtration obtains enters the calcification operation in the seaweed gel production; Described percolation machine adopts following structure, it has an outer screen cloth cylindrical body of wrapping up in that can turn round, the inner chamber of cylindrical body has a fixed to treat filter residue liquid transfer lime, treat that filter residue liquid transfer lime has liquid feeding end and outlet end, intrinsic somely turn round on the internal chamber wall of cylindrical body with cylindrical body, and perpendicular to the annular of the lumen centers axis of cylindrical body or near the straight flow deflector of annular, straight flow deflector is separated into some chambers with the inner chamber of cylindrical body, all chambers are connected successively by the porthole of offering on the straight flow deflector, all chambers are arranged and are followed successively by some filtering chamber, some percolating chamber, some deslagging chambers, all filtering chamber constitute fillter section, all percolating chamber constitute the diafiltration section, all deslagging chambers constitute the deslagging section, the slag liquid of above-mentioned outlet end output, mainly spray in the filtering chamber of fillter section, above-mentioned deslagging section has slag-drip opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011273100A CN1202030C (en) | 2001-08-07 | 2001-08-07 | Water water treating technique for algea processing industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011273100A CN1202030C (en) | 2001-08-07 | 2001-08-07 | Water water treating technique for algea processing industry |
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| Publication Number | Publication Date |
|---|---|
| CN1336339A CN1336339A (en) | 2002-02-20 |
| CN1202030C true CN1202030C (en) | 2005-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011273100A Expired - Fee Related CN1202030C (en) | 2001-08-07 | 2001-08-07 | Water water treating technique for algea processing industry |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102701513B (en) * | 2011-11-29 | 2014-10-01 | 青岛聚大洋藻业集团有限公司 | New process for wastewater recycling comprehensive treatment in alga processing |
| CN105293812A (en) * | 2014-06-23 | 2016-02-03 | 高嵩 | Sewage treatment method suitable for seaweed processing industry |
| CN105523664A (en) * | 2015-12-24 | 2016-04-27 | 山东省环保产业股份有限公司 | Algin production wastewater pretreatment method |
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2001
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