CN102167424B - U-shaped flow treatment method for saliferous hardly degraded organic wastewater - Google Patents
U-shaped flow treatment method for saliferous hardly degraded organic wastewater Download PDFInfo
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- CN102167424B CN102167424B CN201110024246A CN201110024246A CN102167424B CN 102167424 B CN102167424 B CN 102167424B CN 201110024246 A CN201110024246 A CN 201110024246A CN 201110024246 A CN201110024246 A CN 201110024246A CN 102167424 B CN102167424 B CN 102167424B
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Abstract
The invention discloses a U-shaped flow treatment method for saliferous hardly degraded organic wastewater. An accommodation body is adopted; on the upper part of the accommodation body, one end is used for feeding water, and the other end is used for discharging water; a middle baffle plate is vertically arranged in the accommodation body to ensure that the water flow can flow in the accommodation body in the U shape; and a filler which is obtained by uniformly mixing waste scrap iron and activated carbon particles is filled into the accommodation body; aeration is performed upward at the bottom of the accommodation body to ensure that the filler is contacted with the wastewater to shake, and meanwhile, wastewater can be subjected to combined action of reaction processes of primary battery reaction, reduction reaction, electrochemical enrichment, physical adsorption, coagulation and precipitation of iron ions and the like in the filler, and wastewater is treated so as to remove pollutant. The method has an efficient and stable treatment effect, the adopted accommodation body treatment device has a reasonable structural design, is convenient to install, runs efficiently and stably, and can overcome the disadvantages of high treatment cost of high-concentration hardly degraded organic wastewater, unsatisfactory effect and the like.
Description
Technical field
The present invention relates to the sewage purification processing technology field, relate in particular to a kind of U type method for stream processing of saliferous organic wastewater with difficult degradation thereby.
Background technology
Along with the develop rapidly of China's industry, the quantity discharged of various trade effluents increases severely, and the water pollution of bringing has therefrom become a subject matter of China's environmental pollution.In these waste water, the environmental problem that high density saliferous organic wastewater with difficult degradation thereby is caused is paid attention to by people day by day, and this type of waste water generally has of a great variety, complicated component, and biodegradability is poor, characteristics such as COD, colourity, salinity and hazardous and noxious substances content height.Limited the utilization of direct use biological process.And traditional materialization pretreatment method exists shortcomings such as processing costs height, complex process, process be wayward usually.At present, the processing of high density saliferous organic wastewater with difficult degradation thereby mainly contains three kinds of methods.
One, biological method
Biological treatment has economy, efficient, harmless characteristics, is widely used in the processing of waste water.But the inorganic salt in the high saliferous trade effluent have stronger restraining effect to general mikrobe, and therefore, salt-durable microbe and halophile have been brought into play positive effect in high slat-containing wastewater is handled.But along with the variation of high density saliferous organic wastewater with difficult degradation thereby concentration, biological treatment effect is unstable, and anti impulsion load is relatively poor.
Two, high-level oxidation technology
High-level oxidation technology utilization oxygenant, electricity, illumination, UW and catalyzer; In reaction, produce active extremely strong radical (like OH, OOH, H etc.); Make Persistent organic pollutants open loop, scission of link, addition, replacement, transfer transport etc.; The macromole hardly degraded organic substance is transformed into the readily biodegradable small-molecule substance, even directly generates CO
2And H
2O reaches innoxious purpose.High-level oxidation technology is handled organic waste water, has the efficient height, reacts advantage such as fast, and the handling problem that can solve used water difficult to degradate has a wide range of applications.But high-level oxidation technology exists processing costs high, and reaction conditions requires harsh, reactor drum with add shortcoming such as medicine device fabrication complicacy, reaction conditions control remains difficult point with the reduction of working cost.
Three, membrane separation technique
It is very fast in development in recent years that embrane method is handled waste water, comprise that the processing to city domestic sewage, percolate, trade effluent etc. all has a large amount of reports, and large-scale industrial application is also more.Embrane method is handled waste water, and not only treatment effect is good, can also reclaim some valuable compositions in the waste water.The main difficult point that limits the popularization of membrane technique practical applications at present is the cost height of film, life-span weak point, pollution fouling obstruction etc.
Summary of the invention
To the deficiency of above-mentioned prior art, the technical problem that the present invention will solve is: a kind of U type method for stream processing that is exclusively used in the saliferous organic wastewater with difficult degradation thereby of treatment effect efficient stable is provided.
In order to solve the problems of the technologies described above, adopted following technical scheme among the present invention:
A kind of U type method for stream processing of saliferous organic wastewater with difficult degradation thereby is characterized in that, adopts an accommodating body; The one end water inlet on accommodating body top; The other end water outlet, and middle baffle plate vertically is set in accommodating body makes current in accommodating body, be the U type to flow, in accommodating body, be provided with and mix the filler that obtains by discarded iron filings and grain active carbon; Produce shake when upwards aeration makes filler contact with waste water in the accommodating body bottom; Make waste water in filler, produce the reaction process actings in conjunction such as coagulation and deposition of galvanic cell reaction, redox reaction, electrochemistry enrichment, physical adsorption, iron ion simultaneously simultaneously, waste water is handled, remove pollutent.
In the present technique scheme, make waste water form in accommodating body that the U type flows and in the bottom aeration, compare with the existing enterprising tupe that goes out or advance to go up down removing from mould down; Filler can not produce loss, can avoid the filler loss, simultaneously under the aeration effect of aerating apparatus; Filler integral body is dither state in bed of packings, filler is fully contacted with waste water, can reduce that filler hardens and passivation; And make that reaction is more abundant, treatment effect is better more stable.When present method is handled waste water; The iron of low potential and the carbon of noble potential produce potential difference in waste water; Waste water serves as ionogen, forms countless galvanic cells, and then produces the coagulation and the precipitin reaction acting in conjunction of galvanic cell reaction, redox reaction, electrochemistry enrichment, physical adsorption, iron ion.Wherein said galvanic cell reaction is meant that the iron of low potential and the carbon of noble potential produce potential difference in waste water, and the good brine waste of electroconductibility serves as ionogen, forms countless galvanic cells, the generating electrodes reaction, and its primary electrode reacts as follows, anode: Fe-2e → Fe
2+, E
0(Fe
2+/ Fe)=-0.44V; Negative electrode: 2H
++ 2e → 2 [H] → H
2, E
0(H
+/ H
2)=0.00V, O
2+ 4H
++ 4e → 2H
2O, E
0(O
2/ H
2O)=1.22V.Said redox reaction is meant that the hydrogen in statu nascendi that obtains in the electrode reaction has bigger activity, can with many component generation redoxomorphismes in the waste water; Can know from the electropotential of iron; The metal that in metal activity command table, comes the iron back might be cemented out and be deposited on the surface of iron by iron; The reducing power of iron also can make some organism be reduced into ortho states, under the condition of aeration, produces Fe when iron filings are handled waste water
2+Be oxidized to Fe
3+, redox reaction further takes place, degradation of organic substances.Said electrochemistry enrichment is meant after forming a little galvanic cell between iron and iron carbide or other impurity, will around it, produce an electric field, and the colloid in the waste water will produce electrophoresis and attached collection under electric field action.Said physical adsorption is in weakly acidic solution, and the abundant specific surface area of iron filings is showed higher surface activity, can adsorb organic pollutant and multiple metals ion in the waste water; Gac also has higher adsorptive power simultaneously.The coagulation of said iron ion is meant under acidic conditions, when handling waste water with iron filings, can produce Fe
2+And Fe
3+, Fe
2+And Fe
3+Be good coagulating agent, original suspended matter in the waste water all can be by its adsorption-condensation through galvanic cell reaction insolubles that produces and the insoluble colloid that constitutes colourity, and plays the effect of molysite dephosphorization.The precipitating action of said iron ion is meant in the product of cell reaction, Fe
2+And Fe
3+Also will react the generation throw out and remove these inorganicss, to reduce its toxic generate subsequent chemical industry section with some inorganicss.Like this, various reactivitys are in one, treatment of high concentration saliferous organic wastewater with difficult degradation thereby that can efficient stable.
As the optimization of technique scheme, the accommodating body that adopts in the scheme can adopt the accommodating body of following structure, and said accommodating body top one end is provided with into water water distribution system, and the top the other end is lower than into that water water distribution system position is provided with rising pipe; Between said water inlet water distribution system and the said rising pipe said middle baffle plate is set vertically, middle baffle plate with accommodating body inside be divided into be positioned under the water inlet on one side of water water distribution system into to the stream reaction zone be positioned at rising pipe water outlet upward flow reaction zone on one side; Be communicated with to stream reaction zone and water outlet upward flow reaction zone bottom under the said water inlet, and in stream reaction zone and water outlet upward flow reaction zone, be provided with bed of packings under the water inlet, bed of packings is filled with discarded iron filings and the seed activity carbon filler that mixes; Be provided with aerating system to stream reaction zone and water outlet upward flow reaction zone below under the said water inlet; Be provided with the bottom supporting layer that constitutes by supporting plate and pebbles to stream reaction zone and bottom connection place of water outlet upward flow reaction zone under the said water inlet; In stream reaction zone and water outlet upward flow reaction zone, be arranged at intervals with the middle supporting layer that constitutes by by supporting plate and pebbles under the water inlet of supporting layer top, said bottom; Between said bottom supporting layer and the middle supporting layer and middle supporting layer top all is provided with said bed of packings; Said aerating system comprises the exhalant region aerating system of the corresponding water outlet upward flow reaction zone setting of inhalant region aerating system and bottom supporting layer below that is provided with to the stream reaction zone under corresponding water inlet the in supporting layer below, said bottom; Filler in the said bed of packings is divided into many lattice by the vertical mesh division board that is provided with; The area of every lattice can rule of thumb obtain with experiment, and its size is relevant with factors such as waste water flow velocity, filler particle size.
Wherein said bed of packings is a water treatment field member commonly used, can be the structure of frame shape, and filler is contained in the framework, and current can appear from framework; Also can be that simple permeable interlayer such as the emery cloth etc. of adopting obtain, make filler be deposited in the interlayer, current can appear from interlayer.Said aerating system also is the water treatment field usual means, so not at this detailed description; Said supporting plate also for water treatment field member commonly used, is used for the support filler and guarantees the unimpeded of current, generally can adopt poly (methyl methacrylate) plate boring to be prepared from, and 3mm generally can be adopted in the aperture.When adopting the accommodating body processing organic wastewater with difficult degradation thereby of this structure, waste water gets into water inlet from the water inlet water distribution system and after flow reaction zone toward dirty, entering into water outlet upward flow reaction zone, upwards flows down, and flows out from rising pipe.After optimizing like this, adopt supporting layer that bed of packings is separated for two-layer, can effectively prevent bed of packings, can also reduce plume and the generation of lacking flow phenomenon because the consumption of iron is subsided and hardened.Adopt pebbles to do supporting layer, the air-flow that aerating apparatus is exposed gets in the packing layer after supporting layer disperses again, makes aeration more even, and reaction effect is better.Simultaneously, with water outlet upward flow reaction zone different aerating systems is set to the stream reaction zone down, can adopts different aeration rate and aeration speed to two different streamflow regimes in district to water inlet.The water inlet current in the stream reaction zone down is toward dirty, and what get into simultaneously is pending waste water, so need to increase aeration rate and aeration speed, makes the air-flow that exposes to reach fully and participates in reaction in the filler.The current of water outlet upward flow reaction zone are toward the upper reaches, simultaneously owing to being the waste water of handling to the stream reaction zone down through water inlet, so can reduce aeration rate and aeration speed.Can make that like this aeration is more reasonable, more abundant to the utilization of aeration; The iron carbon layering of simultaneously also having avoided air water that washing away of filler caused has reduced power consumption when improving processing efficiency.In addition, the filler in the said bed of packings is divided into many lattice by the vertical mesh division board that is provided with, the generation that can prevent bed of packings to subside and harden and further reduce plume and short flow phenomenon owing to the consumption of iron further; Make reaction more steadily with abundant.
As another optimization, also be provided with the back flushing water distribution system in the accommodating body of said rising pipe top, the below of said water inlet water distribution system also is provided with the back flushing rising pipe.Like this; After can closing into water water distribution system and rising pipe, open the back flushing water distribution system and the back flushing rising pipe carries out counterflush, can be used for the activation filler on the one hand; The fixed dirt with in the bed of packings that on the other hand can be regular cleans out; Prevent that further packing layer from stopping up and harden, and the backwashing water flow path direction during with reaction water (flow) direction opposite, can further prevent iron filings and the activated carbon granule layering in the filler and reduce treatment effect.
As further optimization; Said water inlet water distribution system and back flushing water distribution system include a house steward; Transverse tube with total pipe coupling; With a plurality of arms that are connected with transverse tube, all at least one arm should be arranged, each arm is provided with and alternately is the eyelet that 45 ° of angles distribute downwards in each zone that is separated out by mesh division board in the said bed of packings.Can make water distribution more even like this, avoid the generation of short flow phenomenon.
As another improvement, also be equipped with one deck filter screen on the supporting plate of said bottom supporting layer.Filter screen can adopt the plastic wire of grid 2mm * 2mm, and the particle that is used for preventing filler leaks down and blocks the aeration head of aerating system.
As one improving, the pebbles particle diameter in said bottom supporting layer and the middle supporting layer reduces from top to bottom successively again.Like this, after air-flow passes through pebbles from the bottom up during aeration, can be so that air-flow be more evenly distributed, the aeration better effects if, reaction effect is better.
In sum; The U type method for stream processing of saliferous organic wastewater with difficult degradation thereby of the present invention, treatment effect efficient stable, the accommodating body treatment unit that adopts in this method; Its reasonable in design; Easy for installation, the operation efficient stable can solve drawbacks such as the high concentration hard-degraded organic waste water processing cost is high, effect is undesirable.
Description of drawings
The structural representation of the device that Fig. 1 adopts when being the inventive method enforcement.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the sectional view of the A-A of Fig. 1.
Fig. 4 is the sectional view of the B-B of Fig. 2.
Embodiment
Below in conjunction with accompanying drawing and embodiment structure of the present invention is done further to specify.
During practical implementation, a kind of U type method for stream processing of saliferous organic wastewater with difficult degradation thereby adopts an accommodating body; The one end water inlet on accommodating body top; The other end water outlet, and middle baffle plate vertically is set in accommodating body makes current in accommodating body, be the U type to flow, in accommodating body, be provided with and mix the filler that obtains by discarded iron filings and grain active carbon; Produce shake when upwards aeration makes filler contact with waste water in the accommodating body bottom; Make waste water in filler, produce the reaction process actings in conjunction such as coagulation and deposition of galvanic cell reaction, redox reaction, electrochemistry enrichment, physical adsorption, iron ion simultaneously simultaneously, waste water is handled, remove pollutent.
During practical implementation, to shown in Figure 4, said accommodating body 4 tops one end is provided with into water water distribution system 1 to the structure (being the structure of said accommodating body) of the device that present method adopts like Fig. 1, and the top the other end is lower than into that water water distribution system position is provided with rising pipe 16; Said middle baffle plate 9 vertically is set between said water inlet water distribution system and the said rising pipe, middle baffle plate 9 with accommodating body inside be divided into be positioned under water water distribution system into 1 water inlet on one side to stream reaction zone 6 be positioned at rising pipe water outlet upward flow reaction zone 17 on one side; Be communicated with to stream reaction zone and water outlet upward flow reaction zone bottom under the said water inlet, and in stream reaction zone and water outlet upward flow reaction zone, be provided with bed of packings 8 under the water inlet, bed of packings is filled with discarded iron filings and the seed activity carbon filler 7 that mixes; Be provided with aerating system to stream reaction zone 6 with water outlet upward flow reaction zone 17 belows under the said water inlet.During practical implementation, be provided with the bottom supporting layer 11 that constitutes by supporting plate 18 and pebbles to stream reaction zone 6 and 17 bottom connections place of water outlet upward flow reaction zone under the said water inlet; In stream reaction zone and water outlet upward flow reaction zone, be arranged at intervals with the middle supporting layer 10 that constitutes by by supporting plate and pebbles under the water inlet of supporting layer 11 tops, said bottom; Between said bottom supporting layer 11 and the middle supporting layer 10 and middle supporting layer 10 tops all are provided with said bed of packings 8.Filler in the said bed of packings is divided into many lattice by the vertical mesh division board 22 that is provided with.
During practical implementation, said aerating system comprises the exhalant region aerating system 19 of the corresponding water outlet upward flow reaction zone setting of inhalant region aerating system 12 and bottom supporting layer below that is provided with to the stream reaction zone under the correspondence water inlet of supporting layer below, said bottom.Also be provided with back flushing water distribution system 14 in the accommodating body of said rising pipe 16 tops, the below of said water inlet water distribution system 1 also is provided with back flushing rising pipe 5.Said water inlet water distribution system 1 includes a house steward with back flushing water distribution system 14; Transverse tube 2 with total pipe coupling; With a plurality of arms 3 that are connected with transverse tube 2; All at least one arm should be arranged, each arm is provided with and alternately is the eyelet that 45 ° of angles distribute downwards in each zone that is separated out by mesh division board 22 in the said bed of packings.Also be equipped with one deck filter screen on the supporting plate 18 of said bottom supporting layer 11.Pebbles particle diameter in said bottom supporting layer 11 and the middle supporting layer 10 reduces from top to bottom successively.
Claims (5)
1. the U type method for stream processing of a saliferous organic wastewater with difficult degradation thereby is characterized in that, adopts an accommodating body; The one end water inlet on accommodating body top; The other end water outlet, and middle baffle plate vertically is set in accommodating body makes current in accommodating body, be the U type to flow, in accommodating body, be provided with and mix the filler that obtains by discarded iron filings and grain active carbon; Produce shake when upwards aeration makes filler contact with waste water in the accommodating body bottom; Make waste water in filler, produce the coagulation and the acting in conjunction of precipitin reaction process of galvanic cell reaction, redox reaction, electrochemistry enrichment, physical adsorption, iron ion simultaneously simultaneously, waste water is handled, remove pollutent; Said accommodating body top one end is provided with into water water distribution system, and the top the other end is lower than into that water water distribution system position is provided with rising pipe; Between said water inlet water distribution system and the said rising pipe said middle baffle plate is set vertically, middle baffle plate with accommodating body inside be divided into be positioned under the water inlet on one side of water water distribution system into to the stream reaction zone be positioned at rising pipe water outlet upward flow reaction zone on one side; Be communicated with to stream reaction zone and water outlet upward flow reaction zone bottom under the said water inlet, and in stream reaction zone and water outlet upward flow reaction zone, be provided with bed of packings under the water inlet, bed of packings is filled with discarded iron filings and the seed activity carbon filler that mixes; Be provided with aerating system to stream reaction zone and water outlet upward flow reaction zone below under the said water inlet; Be provided with the bottom supporting layer that constitutes by supporting plate and pebbles to stream reaction zone and bottom connection place of water outlet upward flow reaction zone under the said water inlet; In stream reaction zone and water outlet upward flow reaction zone, be arranged at intervals with the middle supporting layer that constitutes by supporting plate and pebbles under the water inlet of supporting layer top, said bottom; Between said bottom supporting layer and the middle supporting layer and middle supporting layer top all is provided with said bed of packings; Said aerating system comprises the exhalant region aerating system of the corresponding water outlet upward flow reaction zone setting of inhalant region aerating system and bottom supporting layer below that is provided with to the stream reaction zone under corresponding water inlet the in supporting layer below, said bottom; Filler in the said bed of packings is divided into many lattice by the vertical mesh division board that is provided with.
2. the U type method for stream processing of saliferous organic wastewater with difficult degradation thereby as claimed in claim 1 is characterized in that, also is provided with the back flushing water distribution system in the accommodating body of said rising pipe top, and the below of said water inlet water distribution system also is provided with the back flushing rising pipe.
3. the U type method for stream processing of saliferous organic wastewater with difficult degradation thereby as claimed in claim 2; It is characterized in that; Said water inlet water distribution system and back flushing water distribution system include a house steward, and the transverse tube with total pipe coupling is with a plurality of arms that are connected with transverse tube; All at least one arm should be arranged, each arm is provided with and alternately is the eyelet that 45 ° of angles distribute downwards in each zone that is separated out by mesh division board in the said bed of packings.
4. the U type method for stream processing of saliferous organic wastewater with difficult degradation thereby as claimed in claim 1 is characterized in that, also is equipped with one deck filter screen on the supporting plate of said bottom supporting layer.
5. the U type method for stream processing of saliferous organic wastewater with difficult degradation thereby as claimed in claim 1 is characterized in that the pebbles particle diameter in said bottom supporting layer and the middle supporting layer reduces from top to bottom successively.
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|---|---|---|---|
| CN201110024246A CN102167424B (en) | 2011-01-21 | 2011-01-21 | U-shaped flow treatment method for saliferous hardly degraded organic wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110024246A CN102167424B (en) | 2011-01-21 | 2011-01-21 | U-shaped flow treatment method for saliferous hardly degraded organic wastewater |
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| CN102167424B true CN102167424B (en) | 2012-10-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103232123B (en) * | 2013-04-28 | 2014-08-06 | 台州学院 | Catalytic reduction-fenton-like oxidization integrated device for preprocessing chemical wastewater |
| CN104230007B (en) * | 2014-08-21 | 2015-12-02 | 浙江清华长三角研究院 | A kind of antiscaling device and application thereof |
| CN109835965A (en) * | 2019-03-07 | 2019-06-04 | 安徽华星化工有限公司 | A kind of abraum salt active carbon for refining adsorbent equipment |
| CN113428928A (en) * | 2021-06-28 | 2021-09-24 | 同济大学 | Method for purifying living chain continuous type uninterrupted high-salinity wastewater |
| CN113443682B (en) * | 2021-06-28 | 2022-04-08 | 同济大学 | High-salinity wastewater treatment system for coupling flow storage purification and flow expansion flushing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562802A (en) * | 2004-03-26 | 2005-01-12 | 重庆大学 | Vertical deflector combined Filtration type dephosphorization and nitrogen rejection facility |
| CN1789155A (en) * | 2004-12-15 | 2006-06-21 | 中国科学院生态环境研究中心 | Rotary drum type reaction apparatus for waste water treatment by micro-electrolysis |
-
2011
- 2011-01-21 CN CN201110024246A patent/CN102167424B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562802A (en) * | 2004-03-26 | 2005-01-12 | 重庆大学 | Vertical deflector combined Filtration type dephosphorization and nitrogen rejection facility |
| CN1789155A (en) * | 2004-12-15 | 2006-06-21 | 中国科学院生态环境研究中心 | Rotary drum type reaction apparatus for waste water treatment by micro-electrolysis |
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