CN104710086A - Sewage treatment system - Google Patents
Sewage treatment system Download PDFInfo
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- CN104710086A CN104710086A CN201510158987.4A CN201510158987A CN104710086A CN 104710086 A CN104710086 A CN 104710086A CN 201510158987 A CN201510158987 A CN 201510158987A CN 104710086 A CN104710086 A CN 104710086A
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- sewage treatment
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- effluent trough
- rotating shaft
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Abstract
The invention relates to a sewage treatment system which comprises a setting tank and an aeration tank, wherein the setting tank is provided with a water outlet trough; the bottom of the water outlet trough is provided with a channel communicated with the aeration tank; the water outlet trough is arranged inside the setting tank and is cylindrical, and the axial line is provided with a rotating shaft; a filter screen capable of rotating around the rotating shaft is horizontally arranged in the water outlet trough; blue algae are fixed on the filter screen; a fan-shaped barrel, which uses the rotating shaft as the axle center and has equal radius to the water outlet trough, is fixedly arranged in the water outlet trough; the edge of the fan-shaped barrel is provided with a rubber band; the upper bottom surface of the fan-shaped barrel and the filter screen are positioned on one horizontal surface; and the fan-shaped barrel is fully filled with an eluate. The heavy metal eluting device is creatively arranged in the sewage treatment system, thereby implementing the cyclic utilization of the adsorbing material, performing collection and concentration on adsorbed heavy metals and laying good foundation for further recycling of heavy metals in sewage.
Description
Technical field
The present invention relates to a kind of Sewage treatment systems.
Background technology
At present, general Sewage treatment systems comprise be communicated with successively a heavy pond, aeration tank and second pond.But be through general Sewage treatment systems treated water because of containing a large amount of heavy metals, still cannot effectively apply.
In numerous process for treating heavy-metal waste water, biological adsorption is one of most effective means.Raw material for biological adsorption has bacterium, fungi, algae, minority higher plant and meta-bolites thereof, and the organism such as starch, Mierocrystalline cellulose, chitosan.
Many algae have the ability of enriched in metals, and its absorption property is often higher than other biological.Blue-green algae is the biology the most widely that distributes in the world, and can see the trace of blue-green algae on fresh water, ocean and land, numerous species can also grow in extreme circumstances, has very strong resistance.
In organic evolution history, blue-green algae is unique protokaryon algae, has significantly different from other Eukaryotic Algaes, and its cellularstructure, closer to photosynthetic bacterium, is netted this and also claimed cyanobacteria.
The selective adsorption of organism heavy metal and adsorption efficiency are determined by the character of cell walls to a great extent.The negative charge that alga cells cornice is certain, has larger surface-area and viscosity, and many functional groups such as hydroxyl, carboxyl, amino, amide group, phosphate radical etc. can be provided to be combined with metal ion.Some do not have the algae of cell walls not show good absorption property.The cell walls of blue-green algae and Eukaryotic Algae difference are comparatively large, and the cell walls main component of Eukaryotic Algae is Mierocrystalline cellulose, and the cell walls main component of blue-green algae is peptidoglycan. and peptidoglycan can metal ion, particularly most of transition metal that from the aqueous solution, complexing is a large amount of,
And the rich composition of wanting of the sticky gum sheath of Cells of Blue-green Algae wall surface is acidic mucopolysaccharide or pectin substance, has stronger absorption small-particle and the ability of metal ion.In addition, blue-green algae can also secrete exocellular polysaccharide and carrys out complexation of metal ions.
Blue-green algae at present for biological adsorption research mainly contains spirulina, anabena, Microcystis aeruginosa, nostoc, seat algae and synechococcus etc.
(anabena is to some metal biosorption effect study for He Jinlan; Volume the 3rd phase in " rock and mineral testing " September the 11st in 1992; P225-227) have studied anabena to the absorption of part metals ion and elution requirement.Research shows.Anabena when pH value is larger and the bonding force of metal ion comparatively strong, the solution that during wash-out, the most handy acidity is higher.When acidity is consistent, better than salpeter solution with hydrochloric acid soln elute effect.
Also there is people that blue-green algae is applied to Sewage treatment systems at present, mainly by cultivating separately the method that then blue-green algae renders to aeration tank, but it is even dead that the microorganism adherings such as bacteriums a large amount of in aeration tank can cause micro-algae to grow on micro-algae, so just need ceaselessly to throw in, treatment cost is high.The microbes simultaneously adhered to hinders micro-algae to the absorption of heavy metal in sewage, affects adsorption efficiency.And the blue-green algae having adsorbed heavy metal finally can be deposited at the bottom of pond, thus form the high mud of heavy metal content, for sewage, mud containing heavy metal is difficult to process more, by the mode of cement landfill, these mud temporarily can only be sealed up for safekeeping at present, this mode is never long-term plan, urgently to be resolved hurrily in the Sewage treatment systems of current China.
Immobilization uses chemistry or physics or biological means, free cell is positioned the region limited, and makes it keep active and the method that can recycle.Be mainly used in fermentative production at first, in the later stage seventies, be utilized water treatment field, then become the focus of scholars's research in recent years.It is too little that immobilized algae technology overcomes biomass cells, is separated more difficult shortcoming with the aqueous solution, maintains that efficiency is high, stability is strong, can purifying and keep the advantage of high-efficiency strain, has broad application prospects in field of waste water treatment.In actual application, for making the maintenance of immobilized algae energy long period active, reducing immobilization cost, extending the work-ing life of fixing algae, selecting suitable process for fixation and carrier to be the key that this technology is used widely in sewage disposal.Conventional process for fixation mainly contains: entrapping method, crosslinking, carrier combined techniques.
Crosslinking outstanding advantages to obtain very high cell density, but can not be widely used owing to lacking good physical strength.The fixing operation of absorption method is simple, mild condition, and carrier can regenerate; But the bonding force between cell and carrier is more weak, the stability therefore operated is bad.Entrapping method has good over-all properties, catalytic activity retain and viability all higher, and applying flexible in being embedded in reaction engineering (comprising the design of reactor, operational stability etc.), therefore, entrapping method becomes most widely used process for fixation in whole immobilized biocatalyst technology; But the diffusional resistance of entrapping method is comparatively large, makes the catalytic activity of cell be restricted, and is not suitable for the reaction relating to macromolecular substance.
The algae fixed technology starts from the eighties in 20th century, is mainly used in biochemical substances and Energy production in early days.In environmental area, immobilized algae is mainly used in biological monitoring and wastewater treatment, and it is high that it has algae cell density, and speed of response is fast, stable and reliable operation, and microorganism is run off few, does not need to be separated, can purify and keep the advantage of high efficient strain.The research that immobilized microalgae cell carries out sewage disposal is at the early-stage, comprises the removal to N, P, the absorption of heavy metal.
Alginate immobilization is a kind of use the most extensively, the embedding immobilization method of most study.It has solidification, shaping, convenient, and little to algae toxicity, immobilized cell density advantages of higher, utilizes the gel immobilized algae of alginate, safety, and fast, preparation is simple, and reaction conditions is gentle, with low cost and be applicable to the immobilization of most of algae.
Summary of the invention
The present invention aims to provide a kind of Sewage treatment systems, by screening suitable blue-green algae kind and adsorption scheme reasonable in design, solves the problem of the more unmanageable high-concentration metallic ions mud of current waste water control process output.
In order to achieve the above object, the present invention is by the following technical solutions:
A kind of Sewage treatment systems, comprising: heavy pond and an aeration tank, and described one heavy pond, with effluent trough, is provided with the passage being communicated with aeration tank bottom described effluent trough; It is characterized in that, it is inner that described effluent trough is arranged on a heavy pond, for cylindrical, its axis is provided with rotating shaft; The filtering net rotated around described rotating shaft is horizontally disposed with in described effluent trough; On described filtering net, immobilization has blue-green algae; Described effluent trough internal fixtion is provided with one with described rotating shaft for axle center, the fan-shaped bucket that radius is equal with described effluent trough; Described fan-shaped bucket upper limb is provided with rubber ring, and described fan-shaped bucket upper bottom surface and described filtering net are positioned at same level, fills elutriant in described fan-shaped bucket.
Described blue-green algae refers to spirulina or anabena.
Described process for fixation is alginate embedded immobilization.
Described elutriant is iso-electric point solution.
The height of described rubber ring is 0.5-2cm.
Described elutriant refers to that pH is the hydrochloric acid soln of 2-3.
The beneficial effect of the invention:
1, Sewage treatment systems of the present invention, arrange filtration unit between pond and aeration tank, first removing heavy metals before realizing aeration by sinking one, such heavy metal would not be deposited to the high heavy metal sewage sludge forming refractory reason bottom aeration tank in a large number.
2, the present invention selects high absorbability, and is easy to immobilization, and the spirulina of toxicological harmless or anabena are as the Heavy Metals Bio-adsorption material, and adsorption efficiency is good and can not cause the pollution once again of water body.
3, heavy metal washing device is creatively provided with in Sewage treatment systems of the present invention, not only achieve the recycle of sorbing material, and can to adsorb the heavy metal carry out collection concentrate, for the further recycling of heavy metal in sewage is laid a good foundation.
Embodiment
In order to understand better and implement the present invention, further illustrate the present invention below in conjunction with specific embodiment.
Embodiment 1
A kind of Sewage treatment systems, comprising: heavy pond and an aeration tank, and described one heavy pond, with effluent trough, is provided with the passage being communicated with aeration tank bottom described effluent trough; It is inner that described effluent trough is arranged on a heavy pond, for cylindrical, its axis is provided with rotating shaft; The filtering net rotated around described rotating shaft is horizontally disposed with in described effluent trough; Described filtering net there is spirulina by alginate using embedding immobilization; Described effluent trough internal fixtion is provided with one with described rotating shaft for axle center, the fan-shaped bucket that radius is equal with described effluent trough; It is highly the rubber ring of 1cm that described fan-shaped bucket upper limb is provided with, and described fan-shaped bucket upper bottom surface and described filtering net are positioned at same level, fill elutriant in described fan-shaped bucket.Described elutriant is iso-electric point solution.
Embodiment 2
A kind of Sewage treatment systems, comprising: heavy pond and an aeration tank, and described one heavy pond, with effluent trough, is provided with the passage being communicated with aeration tank bottom described effluent trough; It is inner that described effluent trough is arranged on a heavy pond, for cylindrical, its axis is provided with rotating shaft; The filtering net rotated around described rotating shaft is horizontally disposed with in described effluent trough; Described filtering net there is spirulina by alginate using embedding immobilization; Described effluent trough internal fixtion is provided with one with described rotating shaft for axle center, the fan-shaped bucket that radius is equal with described effluent trough; It is highly the rubber ring of 2cm that described fan-shaped bucket upper limb is provided with, and described fan-shaped bucket upper bottom surface and described filtering net are positioned at same level, fill elutriant in described fan-shaped bucket.Described elutriant refers to that pH is the hydrochloric acid soln of 3.
Embodiment 3
A kind of Sewage treatment systems, comprising: heavy pond and an aeration tank, and described one heavy pond, with effluent trough, is provided with the passage being communicated with aeration tank bottom described effluent trough; It is inner that described effluent trough is arranged on a heavy pond, for cylindrical, its axis is provided with rotating shaft; The filtering net rotated around described rotating shaft is horizontally disposed with in described effluent trough; Described filtering net there is spirulina by alginate using embedding immobilization; Described effluent trough internal fixtion is provided with one with described rotating shaft for axle center, the fan-shaped bucket that radius is equal with described effluent trough; It is highly the rubber ring of 0.5cm that described fan-shaped bucket upper limb is provided with, and described fan-shaped bucket upper bottom surface and described filtering net are positioned at same level, fill elutriant in described fan-shaped bucket.Described elutriant refers to that pH is the hydrochloric acid soln of 2.
Claims (6)
1. a Sewage treatment systems, comprising: heavy pond and an aeration tank, and described one heavy pond, with effluent trough, is provided with the passage being communicated with aeration tank bottom described effluent trough; It is characterized in that, it is inner that described effluent trough is arranged on a heavy pond, for cylindrical, its axis is provided with rotating shaft; The filtering net rotated around described rotating shaft is horizontally disposed with in described effluent trough; On described filtering net, immobilization has blue-green algae; Described effluent trough internal fixtion is provided with one with described rotating shaft for axle center, the fan-shaped bucket that radius is equal with described effluent trough; Described fan-shaped bucket upper limb is provided with rubber ring, and described fan-shaped bucket upper bottom surface and described filtering net are positioned at same level, fills elutriant in described fan-shaped bucket.
2. Sewage treatment systems as claimed in claim 1, it is characterized in that, blue-green algae described in it refers to spirulina or anabena.
3. Sewage treatment systems as claimed in claim 1, it is characterized in that, described process for fixation is alginate embedded immobilization.
4. Sewage treatment systems as claimed in claim 1, it is characterized in that, described elutriant is iso-electric point solution.
5. Sewage treatment systems as claimed in claim 1, it is characterized in that, the height of described rubber ring is 0.5-2cm.
6. Sewage treatment systems as claimed in claim 1, it is characterized in that, described elutriant refers to that pH is the hydrochloric acid soln of 2-3.
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| CN201510158987.4A CN104710086B (en) | 2015-04-07 | 2015-04-07 | A kind of Sewage treatment systems |
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| CN201510158987.4A CN104710086B (en) | 2015-04-07 | 2015-04-07 | A kind of Sewage treatment systems |
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| RU2012107616A (en) * | 2012-02-29 | 2013-09-10 | Государственное научное учреждение Всероссийский научно-исследовательский институт электрификации сельского хозяйства Российской академии сельскохозяйственных наук (ГНУ ВИЭСХ Россельхозакадемии) | DEVICE FOR BIOCHEMICAL PROCESSING OF LIQUID AND SEMI-LIQUID ORGANIC SUBSTRATES |
| US8852445B2 (en) * | 2011-10-28 | 2014-10-07 | Alfa Laval Ashbrook Simon-Hartley, Inc | Methods and apparatus for treating water and wastewater employing a cloth disk filter |
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2015
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6430698A (en) * | 1987-07-27 | 1989-02-01 | Akio Iwaki | Method for purifying sewage |
| CN101328000A (en) * | 2008-07-25 | 2008-12-24 | 浙江大学宁波理工学院 | Lichenism system and short-term contact oxidation comprehensive processing sewerage method |
| CN101935134A (en) * | 2010-07-21 | 2011-01-05 | 北京桑德环保集团有限公司 | Biological rotating disk sewage treatment equipment |
| CN101941781A (en) * | 2010-09-26 | 2011-01-12 | 浦华环保有限公司 | Filtering system of suspended solids in sewage |
| CN201842695U (en) * | 2010-09-26 | 2011-05-25 | 浦华环保有限公司 | Wastewater suspended substance filter system |
| US8852445B2 (en) * | 2011-10-28 | 2014-10-07 | Alfa Laval Ashbrook Simon-Hartley, Inc | Methods and apparatus for treating water and wastewater employing a cloth disk filter |
| RU2012107616A (en) * | 2012-02-29 | 2013-09-10 | Государственное научное учреждение Всероссийский научно-исследовательский институт электрификации сельского хозяйства Российской академии сельскохозяйственных наук (ГНУ ВИЭСХ Россельхозакадемии) | DEVICE FOR BIOCHEMICAL PROCESSING OF LIQUID AND SEMI-LIQUID ORGANIC SUBSTRATES |
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Inventor after: Zou Yahui Inventor after: Zou Ning Inventor after: Sun Donghong Inventor after: Zou Haipei Inventor before: Zou Ning Inventor before: Sun Donghong Inventor before: Zou Haipei Inventor before: Zou Yahui |
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Effective date of registration: 20190410 Address after: 256600 East of Shatou Village, Mashanzi Town, Beihai New Area, Binzhou City, Shandong Province, to the north of Shugang Road Patentee after: Shandong Binzhou Port Zhenghai Eco-technology Group Co., Ltd. Address before: 264025 No. 186 Hongqi Middle Road, Zhifu District, Yantai City, Shandong Province Patentee before: Ludong University |
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Effective date of registration: 20201117 Address after: 251901 west of Xinyang Sanlu police station, Xinyang Town, Wudi County, Binzhou City, Shandong Province Patentee after: Wudi Zaolian Biotechnology Co., Ltd Address before: 256600 East of Shatou Village, Mashanzi Town, Beihai New Area, Binzhou City, Shandong Province, to the north of Shugang Road Patentee before: Shandong Binzhou Port Zhenghai Eco-technology Group Co.,Ltd. |
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