CN105293812A - Sewage treatment method suitable for seaweed processing industry - Google Patents
Sewage treatment method suitable for seaweed processing industry Download PDFInfo
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- CN105293812A CN105293812A CN201410281670.5A CN201410281670A CN105293812A CN 105293812 A CN105293812 A CN 105293812A CN 201410281670 A CN201410281670 A CN 201410281670A CN 105293812 A CN105293812 A CN 105293812A
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Abstract
The invention relates to a sewage treatment method suitable for the seaweed processing industry. The method comprises the following steps: a, kelp pretreatment wastewater produced before kelp digestion treatment is subjected to biochemical processing, i.e. the kelp pretreatment wastewater is subjected to an aeration oxygenation biochemical process; residue-water separation is carried out in an air floatation manner; and a water body obtained through separation enters a step c; b, residual floating residue liquid obtained in a clear colloidal fluid collection process after kelp digestion treatment is separately processed, wherein the floating residue liquid is separately processed in the following way: the floating residue liquid is used for producing fertilizers; or the floating residue liquid is filtered with an auger-type filter, and a residue is subjected to a drying process and colloidal fluid is recovered and reused; or the floating residue liquid is transported outside and landfilled; or the floating residue liquid is subjected to chemical flocculation with a flocculent, the obtained material is subjected to crude separation with a percolator, fine filtering is carried out, and then the obtained colloidal fluid enters a calcification process in seaweed gel production; and c, a water body formed by combining the water body obtained after the biochemical processing process in the step a and wastewater produced through subsequent processes after the collection of the clear colloidal fluid is subjected to residue-water separation with an air floatation method; and water liquid obtained through separation is subjected to a filtering treatment.
Description
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.
Background technology
Existing take sea-tangle as the processing enterprise of main material production sodium alginate, iodine, alcohol, and in whole production process, the situation of discharge of wastewater is as follows:
1, sea-tangle pretreated waste water
The waste water produced in sea-tangle treating processes before main finger sea-tangle digestion process, mainly sea-tangle washing water.As with dry sea-tangle for raw materials for production must carry out immersion treatment, soak water and enter iodohydrin production plant as extracting the raw materials for production of iodohydrin, generally outer row; Soaked sea-tangle enters washing procedure, and this operation produces a large amount of washing water and arranges outward, and quantity discharged accounts for about 30% of total release.It to grade composition primarily of 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 is arranged outward, and discharge slag liquid measure accounts for about 12% of total release.The compositions such as its sea-tangle block primarily of non-complete digestion, Kelp fiber, carbohydrate gum, sodium alginate glue, organic loading is high, and wherein suspended substance (SS) accounts for more than 95% of quantity discharged, and pH value is about 8.
3, calcium analyses waste water
The above-mentioned clear glue solution collected enters calcium and analyses operation, and produce a large amount of calcic waste water after carrying out calcification processing, account for about 40% of total release, 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 squeeze water decalcification is through press dewatering operation discharge squeeze water, and its pH value is about 2, and with a little alginate gel, quantity discharged accounts for about 5% of total release.Waste water described in above-mentioned 3,4,5 can be collected clear glue solution described in appellation 2 and carry out to it waste water that following process produces.
At present, marine alga processing enterprise adopts mostly to the improvement of above-mentioned sewage that calcium analyses floating slag, sedimentation solid-liquid separation, composite wastewater carry out aeration biochemical treatment process.Due to its aforementioned several Waste Water Centralized aftertreatment, this concentrate after comprehensive water body salt content higher, complicated component, organic loading fluctuation is large, be unfavorable for microbial growth, the effect that composite wastewater carries out aeration biochemical process must be had influence on, make wastewater treatment efficiency not satisfactory.In addition, because the floating slag liquid in above-mentioned 2 is directly drained in pending waste water, it not only wastes a large amount of glues contained in floating slag liquid, also can bring very big disadvantageous effect to sewage disposal; It also has the defects such as investment is large, working cost is high, labour intensity is large.
Summary of the invention
Task of the present invention is to solve the problem that prior art mesophytization intractability is large, effect is undesirable, provides a kind of and is applicable to the ideal treatment process of marine alga processing industry wastewater treatment efficiency.
Further task of the present invention is on the basis solving above-mentioned task, from floating slag liquid, reclaim glue, 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, carry out biochemistry treatment to the sea-tangle pretreated waste water produced before sea-tangle digestion process, after namely carrying out aeration oxygen replenishing biochemistry to sea-tangle pretreated waste water, then carry out pulp water separation by air supporting mode, the water body obtained after separation enters step c
B, individual curing is carried out to remaining floating slag liquid when collecting clear glue solution after sea-tangle digestion process; Described floating slag liquid individual curing is achieved in that or produces fertilizer with floating slag liquid; Or recycle with the filtration of cagem type filter, its slag class drying and other treatment glue; Or outward transport landfill; Or add after flocculation agent carries out chemical flocculation to above-mentioned floating slag liquid, carry out roughing out through percolation machine, by essence filter the glue obtained enter seaweed gel produce in calcification operation.
C, to the water body after above-mentioned steps a biochemistry treatment and above-mentioned collect clear glue solution carry out waste water that following process produces comprehensive after water body, adopt air supporting mode to carry out pulp water separation, isolated water liquid carries out filtration treatment.
The present invention carries out biochemical treatment separately to the sea-tangle pretreated waste water accounting for total release about 30%, due to its water conditioning, the feature that biodegradability is stronger, at this, biochemical treatment is carried out to it, overcome prior art this effluent part and follow-up many waste water is comprehensive after to carry out biochemical treatment difficulty large, be difficult to the defect realized, also overcome in prior art simultaneously and biochemical for the inconvenience relatively large follow-up waste water of total release about 60% that accounts for together is carried out the high problem of running cost that biochemical treatment brings, therefore, independent biochemical treatment is carried out to the sea-tangle pretreated water accounting for total release about 30%, apart from outside good treatment effect, also working cost can be greatly reduced, reduce the burden on enterprises.
As a further improvement on the present invention, the biochemistry treatment of above-mentioned steps a realizes like this, before carrying out aeration oxygen replenishing biochemistry, carry out the water correction process of sea-tangle pretreated waste water, this water correction process is a kind of natural rock mud stone thrown in the pending waste water of water correction treating pond.Natural rock mud stone, quality is softer, and many grays, blue green, brown, there will not be loose, weathering phenomenon, its main amount SiO in immersion process
2, Al
2o
3, Fe
2o
3, the many oxide (percentage composition meter) such as NaO, tens kinds of elements such as Co, Zn, Sr, Zr, Rb, Ba (PPM level meter), be proven, mud stone is used the above-mentioned water quality of waste water to be carried out to improvement process, pending waste water quality will be made to be significantly improved, as water body become clear by muddiness, suspended substance increase etc., be conducive to aeration oxygen replenishing biochemistry.This mud stone is distributed more widely in China, as all there is distribution on the ground such as the Northeast, Hebei, Shaanxi, Shandong, Jiangsu.
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, add after flocculation agent carries out chemical flocculation to above-mentioned floating slag liquid, carry out roughing out through percolation machine, by essence filter the glue obtained enter seaweed gel produce in calcification operation, this percolation machine adopts following structure, what it had one can operate wraps up in screen cloth cylindrical body outward, the inner chamber of cylindrical body has one fixing to treat filter residue liquid transfer lime, treat that filter residue liquid transfer lime has liquid feeding end and outlet end, intrinsicly on the internal chamber wall of cylindrical body somely to operate with cylindrical body, and perpendicular to the annular of the lumen centers axis of cylindrical body or close to the straight flow deflector of annular, the inner chamber of cylindrical body is separated into some chambers by straight flow deflector, all chambers are connected successively by the porthole that straight flow deflector is offered, all chamber arrangements are followed successively by some filtering chamber, some percolating chamber, some deslagging chambers, all filtering chamber form fillter section, all percolating chamber form diafiltration section, all deslagging chambers form deslagging section, the slag liquid that above-mentioned outlet end exports mainly sprays in the filtering chamber of fillter section, above-mentioned deslagging section has slag-drip opening.The percolation machine used due to this process have good filtration effect, can the serialization feature of uninterruptedly carrying out, there is higher production efficiency, the glue contained in floating slag liquid can be recycled comparatively thoroughly, as can 18m be produced in sea-tangle per ton (rushing rare multiple is 120 times of meters)
3floating slag liquid, can obtain glue 15m through foregoing filtration
3left and right, the glue solid content of this glue is more than 1.5 ‰, obtains finished product sodium alginate about about 22 kilograms, and to produce 1 ton of sodium alginate daily, the seaweed gel finished product of recyclable about 100 kilograms of every day, can increase considerable economic benefit.Meanwhile, also overcome in prior art and floating slag liquid is drained into postorder, comprehensively together process brought difficulty greatly with other waste water, the defect that cost is high.
The present invention also has the advantages such as less investment, working cost are low, and to produce one ton of sodium alginate daily, gross investment about about 700,000 yuan, total installation of generating capacity is about 40KW, the every M of composite wastewater processing costs (comprising the electricity charge, labour cost, maintenance cost etc.)
3about 0.5 yuan.
Label 1 is for wrap up in 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 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 cylindrical body left side brackets, and 11 is support on the right side of cylindrical body.
Embodiment
Carry out biochemistry treatment to the sea-tangle pretreated waste water produced before sea-tangle digestion process, after namely carrying out aeration oxygen replenishing biochemistry to sea-tangle pretreated waste water, then carry out pulp water separation by air supporting mode, the water body obtained after separation enters step c.This biochemical treatment can adopt the prior art of sewage treatment area, as adopted aeration oxygen replenishing of the prior art, dissolved air flotation mode and facility.Certainly other also can be adopted can to realize the facility of aforesaid way.Before carrying out aeration oxygen replenishing biochemistry, can carry out the water correction process of sea-tangle pretreated waste water, this water correction process in the pending waste water of water correction treating pond (pretreatment pool), throws in a kind of natural rock mud stone realize also known as green sandstone.
Individual curing is carried out to remaining floating slag liquid when collecting clear glue solution after sea-tangle digestion process.This individual curing refers to floating slag liquid production fertilizer, uses the filtration of cagem type filter, the recycling of its slag class drying and other treatment glue, outward transport landfill etc.Certainly, be good to adopt following manner, namely add after flocculation agent carries out chemical flocculation to above-mentioned floating slag liquid, flocculation agent adopts prior art, carry out roughing out through percolation machine, after the glue plate and frame filter obtained etc. filter (essence is filtered), enter the calcification operation in seaweed gel production.Above-mentioned percolation machine adopts following structure, its outer cylindrical body wrapping up in screen cloth having one can operate, the inner chamber of cylindrical body has one fixing 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 pipe has nozzle 9, outlet end also can have tubulose to treat filter residue liquid surge chamber 8, surge chamber 8 is furnished with the nozzle 9 of some even arrangements, intrinsicly on the internal chamber wall of cylindrical body somely to operate with cylindrical body, and perpendicular to the annular of the lumen centers axis of cylindrical body or close to the straight flow deflector 3 of annular, cylindrical body is separated into some chambers by straight flow deflector, 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 luminal border place of flow deflector 3, its quantity can be 1, 2, 3, 4 grades, with quantity 1, 2 is good, porthole 5 can be extended to inner chamber central axis by cylindrical body luminal border, now each straight flow deflector can be divided into some parts.All chamber arrangements are followed successively by some filtering chamber, some percolating chamber, some deslagging chambers, above-mentionedly somely can be 1,2,3,4,5 ... Deng, the quantity of three can not be identical, all filtering chamber form fillter section I, all percolating chamber form diafiltration section II, all deslagging chambers form deslagging III, the slag liquid that above-mentioned outlet end is exported by nozzle 9, mainly spray in fillter section I filtering chamber, deslagging section has slag-drip opening 6.Its principle of work is roughly, floating slag liquid to be filtered 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 filter residue liquid in filtering chamber by it from gravity, centrifugal force and the decomposing force (multidirectional forces) facilitated on flow deflector, and form good filtration channel and enough large filtration area, complete the large portion of filtration work in this section; Surplus slag liquid enters in next chamber through the porthole of straight flow deflector successively, laggard enter the chamber of diafiltration section II, its working process, with fillter section I, makes the solid-liquid of surplus slag liquid be able to further separation at this section, and isolated slag thing is pushed in the deslagging chamber of deslagging section III, after discharged by slag-drip opening.Uninterrupted operation like this, realizes floating slag liquid serialization solid-liquid separation to be filtered.
To the water body after above-mentioned steps a biochemistry treatment and above-mentioned collect clear glue solution carry out waste water that following process produces comprehensive after water body carry out materializing strategy, namely to above-mentioned comprehensive after water body adopt air supporting mode to carry out pulp water separation, the water liquid obtaining (isolating) carries out the process such as filtration; This materializing strategy mode and facility adopt sewage treatment area prior art.
Claims (3)
1. one kind is applicable to marine alga processing industry sewage water treatment method, there are following steps: a, biochemistry treatment is carried out to the sea-tangle pretreated waste water produced before sea-tangle digestion process, namely after aeration oxygen replenishing biochemistry being carried out to sea-tangle pretreated waste water, carry out pulp water separation by air supporting mode again, the water body obtained after separation enters step c; B, individual curing is carried out to remaining floating slag liquid when collecting clear glue solution after sea-tangle digestion process; Described floating slag liquid carries out individual curing and is achieved in that or produces fertilizer with floating slag liquid; Or recycle with the filtration of cagem type filter, its slag class drying and other treatment glue; Or outward transport landfill; Or add after flocculation agent carries out chemical flocculation to above-mentioned floating slag liquid, roughing out is carried out through percolation machine, by essence filter the glue obtained enter seaweed gel produce in calcification operation, c, to the water body after above-mentioned steps a biochemistry treatment and above-mentioned collect clear glue solution carry out waste water that following process produces comprehensive after water body, adopt air supporting mode to carry out pulp water separation, isolated water liquid carries out filtration treatment.
2. sewage water treatment method according to claim 1, it is characterized in that: the biochemistry treatment of described step a realizes like this, before carrying out aeration oxygen replenishing biochemistry, carry out the water correction process of sea-tangle pretreated waste water, this water correction process is in the pending waste water of water correction treating pond, throw in a kind of natural rock mud stone.
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, add after flocculation agent carries out chemical flocculation to above-mentioned floating slag liquid, carry out roughing out through percolation machine, by essence filter the glue obtained enter seaweed gel produce in calcification operation, described percolation machine adopts following structure, what it had one can operate wraps up in screen cloth cylindrical body outward, the inner chamber of cylindrical body has one fixing to treat filter residue liquid transfer lime, treat that filter residue liquid transfer lime has liquid feeding end and outlet end, intrinsicly on the internal chamber wall of cylindrical body somely to operate with cylindrical body, and perpendicular to the annular of the lumen centers axis of cylindrical body or close to the straight flow deflector of annular, the inner chamber of cylindrical body is separated into some chambers by straight flow deflector, all chambers are connected successively by the porthole that straight flow deflector is offered, all chamber arrangements are followed successively by some filtering chamber, some percolating chamber, some deslagging chambers, all filtering chamber form fillter section, all percolating chamber form diafiltration section, all deslagging chambers form deslagging section, the slag liquid that above-mentioned outlet end exports, mainly spray in the filtering chamber of fillter section, above-mentioned deslagging section has slag-drip opening.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410281670.5A CN105293812A (en) | 2014-06-23 | 2014-06-23 | Sewage treatment method suitable for seaweed processing industry |
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| CN201410281670.5A CN105293812A (en) | 2014-06-23 | 2014-06-23 | Sewage treatment method suitable for seaweed processing industry |
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| CN105293812A true CN105293812A (en) | 2016-02-03 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107686199A (en) * | 2017-09-18 | 2018-02-13 | 连云港紫金海藻产业研究发展中心 | The circulation comprehensive of seaweed processing waste water utilizes system and technical method |
| CN107867774A (en) * | 2017-10-24 | 2018-04-03 | 连云港紫金海藻产业研究发展中心 | The circulation comprehensive of seaweed processing waste water utilizes system and technical method |
| CN107935266A (en) * | 2017-11-30 | 2018-04-20 | 连云港紫金海藻产业研究发展中心 | The circulation comprehensive of seaweed processing waste water utilizes system and technical method |
| CN108101277A (en) * | 2017-11-30 | 2018-06-01 | 连云港紫金海藻产业研究发展中心 | The circulation comprehensive of seaweed processing waste water utilizes system and technical method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1336339A (en) * | 2001-08-07 | 2002-02-20 | 钱百龄 | Water water treating technique for algea processing industry |
| WO2010086853A1 (en) * | 2009-02-02 | 2010-08-05 | Magal Saphier | Oxidation of organic contaminants present in wastewater |
-
2014
- 2014-06-23 CN CN201410281670.5A patent/CN105293812A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1336339A (en) * | 2001-08-07 | 2002-02-20 | 钱百龄 | Water water treating technique for algea processing industry |
| WO2010086853A1 (en) * | 2009-02-02 | 2010-08-05 | Magal Saphier | Oxidation of organic contaminants present in wastewater |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107686199A (en) * | 2017-09-18 | 2018-02-13 | 连云港紫金海藻产业研究发展中心 | The circulation comprehensive of seaweed processing waste water utilizes system and technical method |
| CN107867774A (en) * | 2017-10-24 | 2018-04-03 | 连云港紫金海藻产业研究发展中心 | The circulation comprehensive of seaweed processing waste water utilizes system and technical method |
| CN107935266A (en) * | 2017-11-30 | 2018-04-20 | 连云港紫金海藻产业研究发展中心 | The circulation comprehensive of seaweed processing waste water utilizes system and technical method |
| CN108101277A (en) * | 2017-11-30 | 2018-06-01 | 连云港紫金海藻产业研究发展中心 | The circulation comprehensive of seaweed processing waste water utilizes system and technical method |
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Application publication date: 20160203 |