CN205419871U - Electric flocculating reaction equipment of waste water is polluted to sweet phosphine high concentration of preliminary treatment grass - Google Patents

Electric flocculating reaction equipment of waste water is polluted to sweet phosphine high concentration of preliminary treatment grass Download PDF

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Publication number
CN205419871U
CN205419871U CN201520868546.9U CN201520868546U CN205419871U CN 205419871 U CN205419871 U CN 205419871U CN 201520868546 U CN201520868546 U CN 201520868546U CN 205419871 U CN205419871 U CN 205419871U
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China
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waste water
reaction
plate
glyphosate
reactive tank
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CN201520868546.9U
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Chinese (zh)
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周少奇
伍启文
刘聃
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GUIZHOU ACADEMY OF SCIENCES
South China University of Technology SCUT
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GUIZHOU ACADEMY OF SCIENCES
South China University of Technology SCUT
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Abstract

The utility model discloses an electric flocculating reaction equipment of waste water is polluted to sweet phosphine high concentration of preliminary treatment grass. This equipment includes pulse generator, reaction, pump, mud discharge bucket, sedimentation tank, anode plate and negative plate, and the anode plate adopts aluminum plate with the negative plate, and aluminum plate is arranged in the reaction, and the pulse generator both ends are connected with anode plate and negative plate respectively, the lower extreme at the reaction is established to the pump for in letting in the electrolysis trough to waste water, opposite direction that flocculating constituent that the direction and the electrolytic reaction that make rivers produced deposits, mud discharge bucket establishes in the bottom of reaction, and the bottom of sedimentation tank leads to pipe with the upper end of reaction to be connected, the partial flco that the electrolytic reaction produced deposits in the reaction, through the mud discharge bucket discharge, and passes through flco secondary precipitation in the sedimentation tank of the upper end outflow of reaction. The utility model discloses simple structure acts as the sweet phosphine waste water of electric flocculent negative and positive pole pair grass with aluminum plate and handles, the pollutant get rid of effect and standard processing method comparison, speed is faster, efficiency is higher, the cost is lower.

Description

A kind of electric flocculation reaction equipment of pretreatment glyphosate high density pollution waste water
Technical field
This utility model belongs to method of wastewater treatment field, is specifically related to the electric flocculation reaction equipment of a kind of pretreatment glyphosate high density pollution waste water.
Background technology
Glyphosate is a kind of wide spectrum, high-efficiency low-toxicity, non-selective post-emergence herbicide.But producing the waste water that glyphosate produces is the organic wastewater of typical high density pollution, high concentration COD, toxicity are big, difficult for biological degradation, containing a large amount of inorganic salts etc., it is more difficult to process.If the most treated discharge, meeting polluted surface water and underground water source, cause body eutrophication etc., destroy ecological environment.
The preprocess method that the pollutant effluents of glyphosate high concentration is conventional at present has the methods such as chemical coagulation process, Hydrolyze method, absorption method.Chemical coagulation: the polluter coagulating sedimentation in water is removed by adding chemical coagulator, effective, it is currently used most processing method.But the mud generation amount of chemical coagulation process is big and moisture content is high, need lasting medicament to put into, operating cost high, and also other the problem such as anion can be introduced in water.Hydrolyze method: Hydrolyze method (point acidic hydrolysis and basic hydrolysis) can remove the phosphorus in water, but inconspicuous to the removal effect of COD, and run equipment requirements height, cost height.Absorption method: use activated carbon, the pollution components in the adsorbent water such as resin, the process to glyphosate waste water, absorption is typically up to less than intended treatment effect, and reclaim and regenerate difficulty greatly, new rubbish can be produced, be not suitable for applying on the Wastewater Pretreatment technology of high concentration.
Phosphorus in organophosphorus pesticide wastewater can be processed by the combination of kinds of processes by Chinese patent (application number 201110383538.1) and reach discharge standard, it require that after the waste water producing each organophosphorus pesticide production link carries out different pretreatment, it is uniformly processed again, complex steps, and could remove after first organophosphor being aoxidized, add various medicaments among process, add cost.The waste water that each link produces quickly and easily, need not be separated pretreatment by the method for the pretreatment glyphosate pesticide wastewater that this utility model is used.
Electric flocculation technique is a kind of electrochemical treatments mode relying on additional power source energising electrolysis to process waste water, it is characterized in that sacrificing soluble anode occurs electrochemical reaction to produce the polluter in flocculant adsorbed water body in water body, then precipitation makes pollutant remove from water body, and produce bubble at negative electrode and have the effect of dissolved air flotation, electrolytic process also occurs redox reaction, it is possible to remove partial organic substances.The electricity main reaction of flocculation is flocculation sediment, dissolved air flotation, oxidoreduction these three.The Patents document that currently used electric flocculation technique is applied in the process of glyphosate high-concentration waste water is little, containing a certain amount of Cl in glyphosate waste water, in reactive tank, chloride ion can produce some ClO, the partial organic substances in water body can be aoxidized, remove a certain amount of COD, and glyphosate waste water has certain salinity, the penetration power of Cl is strong, metal ion plus other can slow down the passivation of battery lead plate, and therefore using electric flocculation technique to carry out pretreatment glyphosate waste water is a kind of technology having application potential.
Chinese Patent Application No. is to disclose a kind of employing ozone-enhanced iron plate electricity flocculation in 200810063021.2 to remove low concentration phosphorus-containing wastewater, good treatment effect can be obtained, but the strand of the hydroxy polymer that the flocculation of iron plate electricity produces does not has the length of aluminium sheet, adsorption effect flocculates not as good as aluminium sheet electricity, the mud produced is also many compared with aluminium sheet, and additionally the interpolation of ozone also can increase cost.
Electric flocculation technique is the widest water technology of a kind of application, its anti-load variations very capable, but has different process conditions and processing mode when processing different water.Need to add salinity during the electricity other waste water of flocculation treatment (as iron and steel rolls waste water) and increase conductivity, and glyphosate waste water inherently contains a certain amount of salinity, without adding, so using electric flocculation technique is a kind of pretreatment mode being especially suitable for glyphosate waste water.
Utility model content
This utility model aims to solve the problem that the some drawbacks of existing glyphosate waste water preconditioning technique, the electric flocculation reaction equipment of a kind of pretreatment glyphosate high density pollution waste water is provided, this equipment processing ease, need not add chemical agent, and processing speed is fast, efficiency is high, operational management is simple, low cost.
The purpose of this utility model is achieved through the following technical solutions:
A kind of electric flocculation reaction equipment of pretreatment glyphosate high density pollution waste water, it includes the pulse power, reactive tank, pump, mud-removing bucket, sedimentation tank, positive plate and minus plate, positive plate uses aluminium sheet with minus plate, aluminium sheet is positioned in reactive tank, and pulse power two ends are connected with positive plate and minus plate respectively;Pump is located at the lower end of reactive tank, and for waste water is passed through in electrolysis bath, it is in opposite direction that the floccule body making the direction of current and cell reaction produce precipitates;Mud-removing bucket is located at the bottom of reactive tank, and the bottom of sedimentation tank is connected by water pipe with the upper end of reactive tank;The part flco that cell reaction produces precipitates in reactive tank, discharges through mud-removing bucket, and the flco secondary precipitation in sedimentation tank flowed out by the upper end of reactive tank.
Further, the effective area of described aluminium sheet is 176cm2
Further, described aluminium sheet has many groups, and multiple minus plate, the most spaced distribution of positive plate.
Further, the spacing between adjacent cathode plate, positive plate is 10mm
Utilize the electro-flucculation process of a kind of pretreatment glyphosate high density pollution waste water of the said equipment, comprise the following steps:
1) by glyphosate waste water filter and remove suspended substances;
2) pH value of waste water is regulated;
3) then starting water pump and pump in electrolysis bath by waste water, energising simultaneously carries out cell reaction;
4) after cell reaction is complete, being struck off by the suspension foam on liquid level, the sludge settling bottom removing after staticly settling, the supernatant water of discharge is the draining handled well.
Further, step 2) pH value of described waste water is adjusted to 7 ± 0.2.
Preferably, step 2) pH value of described waste water is adjusted to 7.0.
Preferably, step 3) current intensity of described cell reaction is 8.52mA/cm2
Preferably, step 3) described cell reaction time i.e. hydraulic detention time is 15min.
Preferably, step 3) battery lead plate of described electrolysis bath is that to participate in the effective area of reaction be 176cm2Aluminium sheet, a size of 275mm × 67mm × 3mm.
Preferably, the spacing between described battery lead plate is 10mm, and the connected mode of electrode is multipole connected mode, yin, yang pole plate the most spaced multicomponent cloth.
Preferably, step 4) described in time of staticly settling be 0.5h 1h.
Using electricity flocculence that glyphosate high density pollution waste water is carried out pretreatment at this utility model, the principal element affecting treatment effect has the pH value of waste water, polar plate spacing, current intensity and electrolysis time etc..Wherein the pH COD in waste water and total phosphorus between 59 has certain process removal effect, but the removal of total phosphorus in water is affected bigger by the change of pH, it is the clearance that near 7.0, maximum got by total phosphorus at pH, now aluminum electrode plate electrolysis primary product Al (OH) in water body3、Al(OH)4‐Multinuclear hydroxo complex with long strand, their absorption property is strong, can adsorb the organic substance of macromole and other impurity in water, then flocculation sediment removes pollutant, and this utility model method is exactly adsorption precipitation to the main removing method of polluter in glyphosate waste water.In acid condition, anode aluminium sheet is as easy as rolling off a log during cell reaction dissolves formation Al3+、Al(OH)2+And Al2(OH)24+Deng, they are the least due to strand, and the performance of adsorption-flocculation is strong not, and the settling property of flco is the most poor, and therefore the pH value of waste water is adjusted to 7.0 for optimal pH.
In this utility model, the size of polar plate spacing has impact clearly to the effect of pollutant removal, when polar plate spacing is the least, the aluminium sheet in reactive tank increases the mixing affecting current, also can produce too much flocculant to condense upon one piece and increase sedimentation velocity, decrease the time of adsorption reaction, reduce the clearance of pollutant on the contrary, too small with time interval, easily cause short circuit current.Polar plate spacing is too big, and the aluminium sheet of unit are reaction needs to process the water yield and increases, and the quantitative change producing flocculant is few, and processing speed and efficiency all can be deteriorated.Therefore, in this utility model, polar plate spacing is set to 10mm.
In this utility model, the change of electric current density has large effect to the clearance of glyphosate high density pollution Pollutants in Wastewater matter.Start along with the clearance of the increase of electric current density, COD and total phosphorus also has significantly rising, but after electric current density increases to a certain degree, clearance presents downward trend the most by a small margin with the increase of electric current density on the contrary, and can increase energy consumption.The speed that electric current density change conference makes floccule body condense accelerates, increases and accelerate sedimentation velocity, decrease the response time of adsorption-flocculation, pollutants removal rate in water body is made to decline on the contrary, so the electric current density selected in this utility model is 8.52mA/cm2 (corresponding current intensity is 1.5A).The treatment effeciency of waste water is also had a certain impact by the length of cell reaction time, after 15min, the clearance of COD and total phosphorus has all reached maximum, prolongation over time, the clearance of COD and total phosphorus no longer raises, but had certain fluctuation, it is primarily due to prolongation over time, reactive tank there occurs the least anti-molten phenomenon, make adsorbed some organic pollutants and a small amount of phosphorus again dissolve from the mud of precipitation and return in water body.So preferred optimum reacting time is 15min in this utility model, need at regular intervals the mud in reactive tank be discharged.
The method of electricity flocculation pretreatment glyphosate high density pollution waste water described in the utility model, by the aluminium sheet electricity flocculation process to waste water, under conditions of described optimal processing parameter, it is possible to quickly waste water is carried out a pre-treatment that speed is fast, efficiency is high in the short period of time.In waste water, the clearance of COD can reach 70.3%, and the clearance of TP reaches 75.4%, and water outlet is as clear as crystal, and colourity and turbidity are substantially completely removed.
Compared with prior art, this utility model has the advantage that
This utility model simple in construction, low cost, equipment volume is little, easily realizes automated management, and the mud amount that reaction is produced is few, and moisture content is low, is easily processed.For complicated component, COD and the waste water of total phosphorus concentration superelevation, the process operations of this preprocess method is simple, it is not necessary to add any chemical agent, and treatment effeciency is fast, effective, has good application market.
Accompanying drawing explanation
Fig. 1 is the electric flocculation reaction equipment schematic diagram of pretreatment glyphosate high density pollution waste water in example.
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment one:
As shown in Figure 1, a kind of electric flocculation reaction equipment of pretreatment glyphosate high density pollution waste water, including the pulse power 1, reactive tank 3, pump 4, mud-removing bucket 5, sedimentation tank 6, positive plate and minus plate, positive plate uses aluminium sheet 2 with minus plate, aluminium sheet 2 is positioned in reactive tank 3, and the pulse power 1 two ends are connected with positive plate and minus plate respectively;Pump 4 is located at the lower end of reactive tank 3, and for waste water is passed through in electrolysis bath, it is in opposite direction that the floccule body making the direction of current and cell reaction produce precipitates;Mud-removing bucket 5 is located at the bottom of reactive tank 3, and the bottom of sedimentation tank 6 is connected by water pipe with the upper end of reactive tank 3;The part flco that cell reaction produces precipitates in reactive tank 3, discharges through mud-removing bucket 5, and the flco secondary precipitation in sedimentation tank 6 flowed out by the upper end of reactive tank 3.It is 176cm as the effective area of aluminium sheet described in preferred example2.Described aluminium sheet has many groups, and multiple minus plate, the most spaced distribution of positive plate.Spacing between adjacent cathode plate, positive plate is 10mm.
In said apparatus, pump 4 is located at the lower end of reactive tank 3, reactive tank 3 is made to use the water flow mode of bottom water inlet upper end water outlet, aluminium sheet 2 is placed vertically in reactive tank 3, it is in opposite direction that the floccule body that the direction of current and cell reaction produce precipitates, the time of contact of flco and pollutant in water can be increased, make adsorption reaction more abundant.The pulse power 1 is located at above reactive tank 3, and the connected mode of electrode is compound connection, and the flco that the cell reaction of part produces can precipitate in reactive tank 3, discharges through mud-removing bucket 5, and the flco with water body outflow can secondary precipitation in sedimentation tank 6.
Regulating pH value after being filtered by glyphosate waste water is 7.0, and installing surface area in a cell is 176cm2Aluminium sheet, spacing 10mm.Turn on pump is passed through in electrolysis bath starting impulse power supply simultaneously waste water, and regulation electric current density is 8.52mA/cm2, starting cell reaction, the regulation flow set response time is 15min.Water outlet staticly settles 30min and is scraped off by the foam on liquid level, the sludge settling bottom removing, and the supernatant water of discharge is the draining that pretreatment is good.
Treatment effect one:
The method using electricity flocculation pretreatment glyphosate high-concentration waste water described in the utility model, carries out pretreatment to the waste water of certain glyphosate high density pollution, treatment effect such as table 1:
Table 1
Former water Draining Clearance
COD(mg/L) 94000 18500 70.3%
TP(mg/L) 23000 3350 75.4%
As can be seen from Table 1, the waste water of such high pollution can be reached COD70.3%, the clearance of total phosphorus 75.4% within short 15min by electricity flocculation pretreatment method described in the utility model, the removal of turbidity and colourity has the most substantially reached extraordinary effect, and water outlet is as clear as crystal.Achieve that speed is fast, efficiency is high, the pretreating effect of low cost.
Embodiment two:
Regulating pH value after being filtered by glyphosate waste water is 7.0, and installing surface area in a cell is 176cm2Aluminium sheet, spacing 10mm.Turn on pump is passed through in electrolysis bath starting impulse power supply simultaneously waste water, and regulation electric current density is 8.52mA/cm2, starting cell reaction, the regulation flow set response time is 15min.Water outlet staticly settles 30min and is scraped off by the foam on liquid level, the sludge settling bottom removing, and the supernatant water of discharge is the draining that pretreatment is good.
Treatment effect two:
The method using electricity flocculation pretreatment glyphosate high-concentration waste water described in the utility model, carries out pretreatment to the waste water of another kind of glyphosate high density pollution, treatment effect such as table 2:
Table 2
Former water Draining Clearance
COD(mg/L) 53800 17000 68.4%
TP(mg/L) 12200 2900 76.2%
As can be seen from Table 2, the method of electricity flocculation pretreatment glyphosate high-concentration waste water described in the utility model has good treatment effect equally to the glyphosate waste water of different high density pollutions, the clearance of COD and total phosphorus is respectively 68.4% and 76.2%, for colourity and turbidity, two kinds of above glyphosate waste waters are all to have the water of orange-yellow slightly float to become as clear as crystal water, illustrate that method of the present utility model can have good removal efficiency to colourity and turbidity, the most anti-load-bearing capacity of explanation electricity flocculence pretreatment glyphosate waste water is strong, speed can be reached fast, efficiency is high, the requirement of low cost.

Claims (4)

1. the electric flocculation reaction equipment of a pretreatment glyphosate high density pollution waste water, it is characterized in that including the pulse power, reactive tank, pump, mud-removing bucket, sedimentation tank, positive plate and minus plate, positive plate uses aluminium sheet with minus plate, aluminium sheet is positioned in reactive tank, and pulse power two ends are connected with positive plate and minus plate respectively;Pump is located at the lower end of reactive tank, and for waste water is passed through in electrolysis bath, it is in opposite direction that the floccule body making the direction of current and cell reaction produce precipitates;Mud-removing bucket is located at the bottom of reactive tank, and the bottom of sedimentation tank is connected by water pipe with the upper end of reactive tank;The part flco that cell reaction produces precipitates in reactive tank, discharges through mud-removing bucket, and the flco secondary precipitation in sedimentation tank flowed out by the upper end of reactive tank.
The electric flocculation reaction equipment of a kind of pretreatment glyphosate high density pollution waste water the most according to claim 1, it is characterised in that the effective area of described aluminium sheet is 176cm2
The electric flocculation reaction equipment of a kind of pretreatment glyphosate high density pollution waste water the most according to claim 1, it is characterised in that described aluminium sheet has many groups, and multiple minus plate, the most spaced distribution of positive plate.
The electric flocculation reaction equipment of a kind of pretreatment glyphosate high density pollution waste water the most according to claim 3, it is characterised in that the spacing between adjacent cathode plate, positive plate is 10mm.
CN201520868546.9U 2015-11-01 2015-11-01 Electric flocculating reaction equipment of waste water is polluted to sweet phosphine high concentration of preliminary treatment grass Expired - Fee Related CN205419871U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109354135A (en) * 2018-12-06 2019-02-19 佛山科学技术学院 A kind of device of electric flocculation and electro-osmosis combination processing sanitary wastewater
CN111115923A (en) * 2020-01-09 2020-05-08 北京宝沃石油技术有限责任公司 Oily sewage treatment system and method based on electric flocculation technology

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109354135A (en) * 2018-12-06 2019-02-19 佛山科学技术学院 A kind of device of electric flocculation and electro-osmosis combination processing sanitary wastewater
CN111115923A (en) * 2020-01-09 2020-05-08 北京宝沃石油技术有限责任公司 Oily sewage treatment system and method based on electric flocculation technology

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Granted publication date: 20160803

Termination date: 20171101