CN105948346A - Sloping plate sedimentation basin and needle cylinder type plasma combined treatment device for toxic organic wastewater - Google Patents

Sloping plate sedimentation basin and needle cylinder type plasma combined treatment device for toxic organic wastewater Download PDF

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Publication number
CN105948346A
CN105948346A CN201610436469.9A CN201610436469A CN105948346A CN 105948346 A CN105948346 A CN 105948346A CN 201610436469 A CN201610436469 A CN 201610436469A CN 105948346 A CN105948346 A CN 105948346A
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China
Prior art keywords
plasma
sloping plate
tubulose
reaction vessel
treatment device
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CN201610436469.9A
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CN105948346B (en
Inventor
孙亚兵
张春晓
於仲清
张谷羽
汪健
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Nanjing University
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Nanjing University
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • C02F1/305Treatment of water, waste water, or sewage by irradiation with electrons
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation

Abstract

The invention discloses a sloping plate sedimentation basin and needle cylinder type plasma combined treatment device for toxic organic wastewater. The device comprises a tubular plasma reaction vessel, a cylindrical sloping plate sedimentation vessel, a high-voltage electrode and a grounding electrode, wherein the high-voltage electrode and the grounding electrode are connected with the positive electrode and the negative electrode of a power supply respectively. The tubular plasma reaction vessel is sleeved with the cylindrical sloping plate sedimentation vessel, a sloping plate is arranged in an annular area between the cylindrical sloping plate sedimentation vessel and the tubular plasma reaction vessel to form a sloping plate sedimentation area, and a sludge bucket is arranged below the sloping plate sedimentation area. The high-voltage electrode is inserted in the tubular plasma reaction vessel. The device has the advantages of being high in utilization rate, high in continuity, economical, environmentally friendly, stable in operation and the like, has a significant treatment effect especially on high-concentration wastewater likely to flocculate and difficult to degrade, has broad potential application prospects and is expected to be widely applied and popularized in a water body pollution treatment process in the future.

Description

A kind of inclined-plate clarifying basin poisonous organic sewage treatment device of compound needle barrel plasma
Technical field
The invention belongs to the applied technical field of low temperature plasma, be specifically related to a kind of inclined-plate clarifying basin compound needle cartridge type etc. from The poisonous organic sewage treatment device of daughter.
Background technology
Along with the fast development of modern industrial and agricultural production, the organic pollution of the association such as pesticide, chemical fertilizer and industrial waste (as PAHs, PCBs, aromatic nitro compound etc.) constantly enter in environment.These organic micro-pollutants often have " three cause " Effect and high bioaccumulation, their diffusion not only pollutes the environment, destroys ecological balance, but also can pass through food chain Approach is detrimental to health, one of Treatment process urgent task having become as environmentalist therefore developing organic pollution.
Inclined-plate clarifying basin grows up on the basis of shallow pool theory, has surface loading compared with traditional horizontal sedimentation tank The advantages such as height, clearance are high, the time of staying is short, floor space is little.It is widely used in sewage disposal, and receive Good effect.Have become as the main device of coagulating sedimentation in sewage disposal at present.
Plasma technique is the high-level oxidation technology in a kind of more forward position occurred in recent years, and is first applied to environmental improvement In.It act as one with ozone oxidation, ultraviolet degradation, free-radical oxidation, pyrolysis and high energy electron irradiation etc. are multiple Body, can effectively remove the various pollutant in waste water, and electric discharge is the main method that low temperature plasma produces, discharge plasma In oxidizing extremely strong OH, H, O, O3Isoreactivity particle, and along with high-temperature oxydation, ultraviolet radiation, shock wave etc. Effect, Organic substance, under the effect of these comprehensive effects, is degraded to CO the most at last2、H2O or other organic substance.There is place The reason cycle is short, efficiency is high, non-secondary pollution, the advantage such as applied widely.The most gradually it is applied to water environment pollution at present In process field, but at present plasma technique yet suffers from some shortcomings, as inefficient, processing cost of a relatively high and The ways and means specific aim of degradation effect is the strongest etc..
As can be seen here, find a kind of efficiently, simple, avoid the sewage-treatment plant of secondary pollution or method the most necessary.
Summary of the invention
It is an object of the invention on the basis of existing technology, it is provided that a kind of inclined-plate clarifying basin compound needle barrel plasma is poisonous has Machine sewage-treatment plant.The design of this device is simple, it is low to invest, floor space is little, high treating effect, reaction efficiency high, without two The advantages such as secondary pollution, collection mud-water separation and Cement Composite Treated by Plasma combine, can apply to following continuously of organic polluting water field Ring processes.
The purpose of the present invention is achieved through the following technical solutions:
A kind of inclined-plate clarifying basin poisonous organic sewage treatment device of compound needle barrel plasma, it includes tubulose plasma reaction Container, tubular sloping plate deposition container and connect high-field electrode and the ground electrode of power positive cathode respectively, described tubulose etc. from Daughter reaction vessel is set in described tubular sloping plate deposition container, at described tubular sloping plate deposition container and tubulose plasma Arranging swash plate in annular region between reaction vessel and form sloping plate deposition district, the lower section in described sloping plate deposition district is provided with sludge bucket, The chamber wall of described tubular sloping plate deposition container is provided with at least one water inlet, and described water inlet is positioned at described sloping plate deposition district On the chamber wall of lower section, the upper end of described tubular sloping plate deposition container is higher than the upper end of described tubulose reaction vessel for plasma;Institute In the tubulose reaction vessel for plasma described in high-field electrode insertion stated, the chamber wall of described tubulose reaction vessel for plasma is Sandwich, described ground electrode is arranged in the crack of described sandwich, under described tubulose reaction vessel for plasma End is provided with outlet, and the top of described tubular sloping plate deposition container is provided with air vent.
As a kind of optimal technical scheme, the upper end of described tubulose reaction vessel for plasma is provided with downflow weir;Further preferably, Described downflow weir is triangular-notch weir.
As a kind of optimal technical scheme, water-distributing device, described water distribution dress are installed in described tubulose reaction vessel for plasma Top setting in described tubulose reaction vessel for plasma.Described water-distributing device is preferably homogenizing plate.
As a kind of optimal technical scheme, described high-field electrode is the hollow metal pipe that upper end is provided with air inlet, this hollow metal The surface distributed of pipe has high-field electrode pin to bring out QI KOU, and gas is brought out by high-field electrode pin after being passed through hollow metal pipe by air inlet QI KOU carries out air-blowing for being passed through gas in tubulose reaction vessel for plasma, forms gas liquid reaction system, reacted gas The air vent being arrived device by the homogenizing plate on top is discharged.
As a kind of optimal technical scheme, described air inlet external air pump, it is passed through air or oxygen.Further preferably , described air inlet is connected with mass air flow sensor and air pump, and the big I of ventilation arbitrarily regulates.
As a kind of optimal technical scheme, described water inlet is 4, is evenly distributed on the appearance of described tubular sloping plate deposition container On wall.
As a kind of optimal technical scheme, described ground electrode is tubular metal net, with the matching form of described sandwich Close.
The material of described tubulose reaction vessel for plasma is glass (quartz glass or safety glass) or pottery;Described tubular is oblique The material of plate precipitation vessel is glass (quartz glass or safety glass) or rustless steel.Described homogenizing plate is pottery or glass (quartz glass or safety glass) and match with the shape of tubulose reaction vessel for plasma.
During use, between high-field electrode and ground electrode, form plasma reaction district, at tubular sloping plate deposition container and tubulose Forming sloping plate deposition district between reaction vessel for plasma, apparatus of the present invention tie precipitate and separate and the plasma reaction of sewage Closing, an equipment realizes two kinds of functions.The described swash plate in sloping plate deposition district is dismountable, and the inclination angle of swash plate is also Can regulate, described sludge bucket is to store mud for temporarily, and utilizes the gravitational settling of mud, reduces the aqueous of mud Rate;Described sloping plate deposition district goes out the cotton-shaped and insoluble material in water from water, and the Cement Composite Treated by Plasma for next step subtracts Gently process load.Described plasma reaction district is the deliquescent polymer degradation treatment in water, for next step Process prepare.Described high-field electrode is the metal tube of hollow, can be passed through gas, forms gas liquid reaction system.Described The high-field electrode pin that the surface of high-field electrode is evenly distributed with many radius of curvature little brings out QI KOU, and described high-field electrode pin brings out gas The shape of mouth, length and quantity can regulate, and therefore form spininess-barrel plasma reaction unit, reduce rising of electric discharge Beginning voltage.
Described triangular-notch weir is that described homogenizing plate is to make plasma anti-in order to enable sewage to flow to homogenizing plate smoothly The sewage answering district contacts more uniformly with gas, strengthens the capacity usage ratio of plasma reaction, and described ground electrode is inlayed In the chamber wall of tubulose reaction vessel for plasma, use material is wire netting, and ground connection.
The upper end of described tubular sloping plate deposition container is higher than the upper end of described tubulose reaction vessel for plasma, it is ensured that sewage will not overflow Stream.
Described water inlet arranges on the barrel of tubular sloping plate deposition container, and oettIed sewage flows into homogenizing plate by triangular-notch weir, Flowing into plasma reaction district afterwards to process, sewage flows out this processing means by outlet afterwards.
The material of described tubulose reaction vessel for plasma is quartzy or ceramic and material is double-deck, sets between double-deck crack Having netted wire ground electrode, described high-field electrode is the metal tube of hollow, external high voltagehigh frequency power supply.Described high pressure The equal scalable of the voltage of high frequency electric source, electric current.
The inclined-plate clarifying basin poisonous organic sewage treatment device of compound needle barrel plasma of the present invention processes organic polluting water, tool There are simultaneously flocculation sediment and the advantage of Cement Composite Treated by Plasma, can be used for the process of the high-concentration hardly-degradable waste water easily flocculated.
Beneficial effects of the present invention:
Apparatus of the present invention have practical, floor space is little, treatment effeciency is high, equipment cost is low, operating cost is low, utilize The advantages such as rate is high, seriality is strong, economic and environment-friendly and stable, solve treatment effect present in current treatment technology The problem such as low, treating capacity is few and floor space is big, can be widely used in the process neck of the easily high-concentration hardly-degradable waste water of flocculation Territory.
Accompanying drawing explanation
Fig. 1 is the structure chart of the inclined-plate clarifying basin poisonous organic sewage treatment device of compound needle barrel plasma.
Fig. 2 is inclined-plate clarifying basin compound needle barrel plasma poisonous organic sewage treatment device A-A direction sectional view.
Fig. 3 is the partial enlarged drawing of high-field electrode
Wherein 1 air inlet, 2 high-field electrode pins bring out QI KOU, 3 triangular-notch weirs, 4 homogenizing plates, 5 water inlets, 6 oblique Plate settling zone, 7 sludge buckets, 8 outlets, 9 air vents, 10 ground electrodes, 11 high-field electrodes, 12 tubuloses Reaction vessel for plasma, 13-tubular sloping plate deposition container, 14-high voltagehigh frequency power supply
Detailed description of the invention
Below in conjunction with accompanying drawing, the implementation process of this invention is explained and analyzes:
As shown in Figure 1, Figure 2 and Figure 3, a kind of inclined-plate clarifying basin poisonous organic sewage of compound needle barrel plasma processes dress Putting, it includes tubulose reaction vessel for plasma 12, tubular sloping plate deposition container 13 and connects high voltagehigh frequency power supply 14 respectively The high-field electrode 11 of both positive and negative polarity and ground electrode 10, described tubulose reaction vessel for plasma 12 is set in described tubular Annular in sloping plate deposition container 13, between described tubular sloping plate deposition container 13 and tubulose reaction vessel for plasma 12 Arranging swash plate in region and form sloping plate deposition district 6, the lower section in described sloping plate deposition district 6 is provided with sludge bucket 7, described tubular swash plate Being evenly distributed with four water inlets 5 on the chamber wall of precipitation vessel 13, described water inlet 5 is positioned at described sloping plate deposition district 6 On the chamber wall of lower section, the top of described tubular sloping plate deposition container 13 is provided with air vent 9, and described tubular sloping plate deposition holds The upper end of device 13 is higher than the upper end of described tubulose reaction vessel for plasma 12;Described high-field electrode 11 inserts described pipe In shape reaction vessel for plasma 12, the chamber wall of described tubulose reaction vessel for plasma 12 is sandwich, and described connects Ground electrode 10 is arranged in the crack of described sandwich, and the lower end of described tubulose reaction vessel for plasma 12 is provided with outlet 8。
As a kind of optimal technical scheme, the upper end of described tubulose reaction vessel for plasma 12 is provided with triangular-notch weir 3.
As a kind of optimal technical scheme, being provided with homogenizing plate 4 in described tubulose reaction vessel for plasma 12, described is equal Stream plate is positioned at the top of described tubulose reaction vessel for plasma 12.
As a kind of optimal technical scheme, described high-field electrode 11 is provided with the hollow metal pipe of air inlet 1 for upper end, in this The surface distributed of empty metal tube has high-field electrode pin to bring out QI KOU 2, and gas passes through high pressure after being passed through hollow metal pipe by air inlet 1 Electrode needle brings out QI KOU 2 and carries out air-blowing for being passed through gas in tubulose reaction vessel for plasma 12, forms gas liquid reaction body System, the air vent 9 that reacted gas arrives device by the homogenizing plate 4 on top is discharged.
Described air inlet is connected with mass air flow sensor and air pump, is passed through air or oxygen, and the big I of ventilation is random Regulation.
The material of described tubulose reaction vessel for plasma 12 is quartz glass or pottery.Described tubular sloping plate deposition container 13 Material is quartz glass or rustless steel.
Described ground electrode 10 is tubular metal net, closes with the matching form of described sandwich.
Described homogenizing plate 4 is pottery or quartz glass and the shape with tubulose reaction vessel for plasma 12 match.
During use, between high-field electrode 11 and ground electrode 10, form plasma reaction district, at tubular sloping plate deposition container Form sloping plate deposition district 6 between 13 and tubulose reaction vessel for plasma 12, apparatus of the present invention the precipitate and separate of sewage and etc. Gas ions reaction bonded, an equipment realizes two kinds of functions.The described swash plate in sloping plate deposition district 6 is dismountable, and The inclination angle of swash plate can also regulate, and described sludge bucket is to store mud for temporarily, and utilizes the gravitational settling of mud, Reduce the moisture content of mud;Described sloping plate deposition district goes out the cotton-shaped and insoluble material in water from water, for next step Cement Composite Treated by Plasma alleviates process load.Described plasma reaction district degrades the deliquescent polymer in water Processing, the process for next step is prepared.Described high-field electrode 11 is the metal tube of hollow, can be passed through gas, is formed Gas liquid reaction system.The high-field electrode pin that the surface of described high-field electrode 11 is evenly distributed with many radius of curvature little brings out QI KOU 2, described high-field electrode pin brings out the shape of QI KOU 2, length and quantity and can regulate, and therefore forms spininess-cartridge type plasma Precursor reactant device, reduces the starting voltage of electric discharge.
The described inclined-plate clarifying basin poisonous organic sewage treatment device of compound needle barrel plasma processes organic polluting water, has Simultaneously flocculation sediment and the advantage of Cement Composite Treated by Plasma, can be used for the process of the high-concentration hardly-degradable waste water easily flocculated.
The process using assembly of the invention purified treatment polluted-water is as follows: the water body of pretreatment is injected by water inlet 5 and puts in place In annular region between described tubular sloping plate deposition container 13 and tubulose reaction vessel for plasma 12, by adding coagulation Agent or conciliation pH, make the pollutant in sewage react in sloping plate deposition district 6, and sewage and agglutinating matter are in sloping plate deposition district 6 Carrying out mud-water separation, sewage flows into homogenizing plate 4 by triangular-notch weir 3 afterwards, enters tubulose reaction vessel for plasma 12, and dirty Mud stores in sludge bucket 7 temporarily, discharges when mud reaches a certain amount.Enter tubulose reaction vessel for plasma 12 Sewage is evenly distributed in plasma reaction district by homogenizing plate 4, and air or oxygen are by being connected on air inlet 1 outward Air pump enters in plasma reaction district, makes plasma in gas-liquid mixed middle electric discharge mutually, and the sewage after process is from outlet 8 Discharging, reacted gas is discharged by air vent 9.
During high voltagehigh frequency corona discharge, the air being passed through can be ionized in a large number, and formed a large amount of high energy free electron, OH、·O、·HO2Deng free radical and the O of strong oxidizing property3And H2O2, because these materials have strong oxidisability, can be to water Matter carries out advanced treating;Meanwhile, also can be with effects such as localized hyperthermia, strong shock wave, stronger ultraviolet lights, thus can Effectively to remove the content of organics in waste water.Electric current, voltage and ventilation and reactant liquor face thickness in reaction are the most adjustable, Can be adjusted flexibly according to effluent quality.Meanwhile, can be circulated according to the effluent quality of tail water and repeatedly process, thus can By the chemistry of plasma discharge, physical action organic wastewater effectively to be decomposed and to remove, reach the mesh purified 's.

Claims (9)

1. the inclined-plate clarifying basin poisonous organic sewage treatment device of compound needle barrel plasma, it is characterised in that it includes tubulose Reaction vessel for plasma, tubular sloping plate deposition container and connect high-field electrode and the ground electrode of power positive cathode respectively, institute The tubulose reaction vessel for plasma stated is set in described tubular sloping plate deposition container, at described tubular sloping plate deposition container and Swash plate is set in the annular region between tubulose reaction vessel for plasma and forms sloping plate deposition district, the lower section in described sloping plate deposition district Being provided with sludge bucket, the chamber wall of described tubular sloping plate deposition container is provided with at least one water inlet, and described water inlet is positioned at institute Stating on the chamber wall below sloping plate deposition district, the upper end of described tubular sloping plate deposition container holds higher than described tubulose plasma reaction The upper end of device;In the described tubulose reaction vessel for plasma described in high-field electrode insertion, described tubulose plasma reaction is held The chamber wall of device is sandwich, and described ground electrode is arranged in the crack of described sandwich, described tubulose plasma The lower end of reaction vessel is provided with outlet, and the top of described tubular sloping plate deposition container is provided with air vent.
Poisonous organic sewage treatment device the most according to claim 1, it is characterised in that described tubulose plasma reaction is held The upper end of device is provided with downflow weir.
Poisonous organic sewage treatment device the most according to claim 1 and 2, it is characterised in that described tubulose plasma is anti- Being provided with water-distributing device in answering container, described water-distributing device is positioned at the top of described tubulose reaction vessel for plasma.
Poisonous organic sewage treatment device the most according to claim 3, it is characterised in that described water-distributing device is current-sharing Plate.
Poisonous organic sewage treatment device the most according to claim 1, it is characterised in that described high-field electrode is that upper end sets Having the hollow metal pipe of air inlet, the surface distributed of this hollow metal pipe has high-field electrode pin to bring out QI KOU, and gas is led to by air inlet Bring out QI KOU by high-field electrode pin after entering hollow metal pipe and carry out air-blowing.
Poisonous organic sewage treatment device the most according to claim 1, it is characterised in that described water inlet is 4, all On the even chamber wall being distributed in described tubular sloping plate deposition container.
Poisonous organic sewage treatment device the most according to claim 1, it is characterised in that described tubulose plasma reaction is held The material of device is glass or pottery;The material of described tubular sloping plate deposition container is glass or rustless steel.
Poisonous organic sewage treatment device the most according to claim 1, it is characterised in that described ground electrode is tubulose gold Belong to net, close with the matching form of described sandwich.
Poisonous organic sewage treatment device the most according to claim 1, it is characterised in that described homogenizing plate is pottery or glass Glass and the shape with tubulose reaction vessel for plasma match.
CN201610436469.9A 2016-06-17 2016-06-17 A kind of toxic organic sewage treatment device of inclined-plate clarifying basin compound needle barrel plasma Active CN105948346B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107337251A (en) * 2017-09-04 2017-11-10 南京大学 A kind of sewage-treatment plant using wet wall discharge plasma
CN114349027A (en) * 2020-10-14 2022-04-15 重庆工商大学 Method and device for removing organic matters in industrial waste salt by using low-temperature plasma

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WO2015060601A1 (en) * 2013-10-23 2015-04-30 (주)그린사이언스 Hybrid water treatment system and method
CN104710059A (en) * 2015-01-22 2015-06-17 华北电力大学 Papermaking wastewater deep treatment method
CN104828899A (en) * 2015-04-20 2015-08-12 南京大学 Line board discharge plasma sewage treatment unit
CN204710057U (en) * 2015-06-01 2015-10-21 杭州中兵环保股份有限公司 The device of the collaborative light electrolysis cleaning organic waste gas of a kind of plasma cracking oxidation
CN105036251A (en) * 2015-06-26 2015-11-11 南京大学 Device for efficiently degrading high-concentration organic polluted wastewater by corona discharge plasma

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Publication number Priority date Publication date Assignee Title
CN102897892A (en) * 2012-10-26 2013-01-30 清华大学 Enhanced-type capillary-needle discharging plasma water treatment device
CN103112980A (en) * 2013-02-22 2013-05-22 山东大学 Flowing-type dielectric barrier discharge wastewater treatment device
WO2015060601A1 (en) * 2013-10-23 2015-04-30 (주)그린사이언스 Hybrid water treatment system and method
CN104710059A (en) * 2015-01-22 2015-06-17 华北电力大学 Papermaking wastewater deep treatment method
CN104828899A (en) * 2015-04-20 2015-08-12 南京大学 Line board discharge plasma sewage treatment unit
CN204710057U (en) * 2015-06-01 2015-10-21 杭州中兵环保股份有限公司 The device of the collaborative light electrolysis cleaning organic waste gas of a kind of plasma cracking oxidation
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107337251A (en) * 2017-09-04 2017-11-10 南京大学 A kind of sewage-treatment plant using wet wall discharge plasma
CN114349027A (en) * 2020-10-14 2022-04-15 重庆工商大学 Method and device for removing organic matters in industrial waste salt by using low-temperature plasma

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