CN1186268C - Method and device for treatment of high-density organic waste water incapable of degrading biochemically - Google Patents
Method and device for treatment of high-density organic waste water incapable of degrading biochemically Download PDFInfo
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- CN1186268C CN1186268C CNB00134787XA CN00134787A CN1186268C CN 1186268 C CN1186268 C CN 1186268C CN B00134787X A CNB00134787X A CN B00134787XA CN 00134787 A CN00134787 A CN 00134787A CN 1186268 C CN1186268 C CN 1186268C
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- waste water
- tower
- electrooxidation
- water
- ejector
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Abstract
The present invention relates to a treatment method for high concentration organic wastewater of difficult biochemical degradation and a device thereof. Through the method and the device thereof, treated wastewater realizes a total oxidation chemical process under the condition of the existence of a catalyst, and the effective treatment of high concentration organic wastewater of difficult biochemical degradation is realized with low operating cost. The present invention has the advantages of scientific design, reasonable structure, low power consumption of wastewater treatment because only 0.5 kilowatt-hour of electricity is used for each ton of water under general situations, low operating cost and favorable treatment effect. After wastewater is treated by the present invention, not only is CODcr effectively removed to different extent, but also BOD5/CODcr in the wastewater is increased from less than 10% to more than 25% so that subsequent conventional biochemistry or physicochemistry treatment effects can be fully exerted.
Description
Technical field
The present invention relates to handle the method and the device thereof of high concentrated organic wastewater, especially a kind of high-density organic waste water incapable of degrading biochemically treatment process and device thereof with physics-chemical process.
Technical background
It is the difficult problem that domestic and international sewage disposal is faced that high-density organic waste water incapable of degrading biochemically is handled always, thereby also is the heat subject of domestic and international Recent study.The energy that people utilize physics modes such as electricity, ultrasonic wave, UV-light and High Temperature High Pressure to provide, and chemical process under certain conditions, produce H
2O
2And bring out OH, and finally make mineralization of organic material, become inorganics and CO
2, H
2O.But above-mentioned method is most of at the experimental stage, and the report that enters the productivity application is few.
Summary of the invention
The purpose of this invention is to provide a kind of high-density organic waste water incapable of degrading biochemically treatment process and device thereof, this method and device thereof make processed waste water carry out chemical oxidation of gold under the catalyzer condition having, and reach effective processing of high-density organic waste water incapable of degrading biochemically with lower working cost.
High-density organic waste water incapable of degrading biochemically treatment process of the present invention comprises the following steps:
(1) processed water is carried out pre-treatment, remove suspended substance;
(2) in waste water, drop into oxygenant, and the pH value of waste water is transferred to 5;
(3) adopt ejector continuous bubbling air in waste water, and the waste water pressure injection is gone into the Electrooxidation tower inner bottom part by water distributor;
(4) enter the interior waste water of Electrooxidation tower, volts DS parallel plate electric field through being added with 18～24V external voltage and the packing layer that constitutes by gac, cast particle and metal oxide catalyst slowly and on, in through the oxidising process under parallel plate electrostatic field and the catalytic condition, remove the organism of part bio-refractory in the waste water, residual organic substances also changes macromole into small molecules, and the oxidation step of going forward side by side is an organic acid;
(5) waste water after the processing rises to cat head, flows into overflow groove and discharges, and the mud that produces in the waste water is discharged at the bottom of tower, thereby the electrooxidation of finishing bio-refractory thing in the high concentrated organic wastewater is handled.
Be used to realize the device of high-density organic waste water incapable of degrading biochemically treatment process, this device comprises:
An oxygenant dispensing kit, this dispensing kit inserts the waste water lift pump by pipeline and pumps into water pipe;
A pump, pump intake connects sewage water inlet pipe, and the relief outlet of pump connects ejector by pipeline;
An ejector, this ejector forcibly sucks waste water with air by air suction pipe, provides wastewater oxidation required oxygen, and the relief outlet of ejector communicates with Electrooxidation tower bottom water distributor;
An Electrooxidation tower, this Electrooxidation tower by tower body, be arranged on the intravital sieve tray of tower and be laid in the battery lead plate on the sieve tray and be filled between battery lead plate the packing layer that constitutes by gac, cast particle and metal oxide catalyst and form with parallel way, battery lead plate all is connected to the direct supply that voltage is 18～24V, the bottom surface of tower body is provided with shore pipe, the bottom of tower body is provided with water distributor, the top of tower body is provided with filter and overflow groove, and the tower body overflow groove is provided with one and is interrupted water outlet device.
The set interruption water outlet device of tower body overflow groove can be that pulsed water outlet device or fluid level controller add magnetic valve.
Spacing between described battery lead plate is 25～50mm.
Activated carbon granule diameter=the 5mm of described composition packing layer, cast particle diameter=10mm.
The volume proportion of described activated carbon granule and cast particle is 1: 1.
Described metal oxide catalyst is TiO
2Or Al
2O
3
Principle of design of the present invention is: the Fe that utilizes cast particle to contain
3The C of C and activated carbon granule constitutes countless galvanic cells, has little electrolytic action, but its inner electric energy is fainter.Owing to be provided with many battery lead plates that are provided with parallel way in the filler, the voltage of 18～24V that the external world provides, strength of electric field between the battery lead plate is increased, electric energy also increases, gac specific surface area 10～30A0, a large amount of acidity, basic group are contained in the surface, and the existence of hydroxyl and phenolic hydroxyl group is arranged, make gac that adsorption not only be arranged, and have the chemical functional of catalyzed oxidation.Fe in the cast iron in addition
3C has iron ion to exist, and jet sucks in the air before the pump 21% O
2, before pump, add H simultaneously
2SO
4Make PH≤5 slant acidity, add proper amount of oxidant, an amount of TiO that adds in the filler
2Or Al
2O
3Metal oxide catalyst.Form a more comprehensive catalyzed oxidation condition, make the mineralization of organic material whole process strengthen and accelerate, external electrical field then plays " startup " effect, the bio-refractory organism will be removed a part effectively in the waste water under these conditions, not removed organism also is hydrolyzed (macromole diminish molecule) and acidifying (small molecules change organic acid), the quite hydrolysis and the acidifying at anaerobism initial stage makes the transition organic molecule, thereby improves the biodegradability of subsequent disposal.
Electrooxidation chemism of the present invention is:
One, hydrogen peroxide H
2O
2Generation
The O that the outside provides
2Capture the electronics that external electric field provides, form oxyradical ion O
2 -, after series reaction generates H
2O
2
2HO
2·→O
2+H
2O
2 (3)
Simultaneously
Two, the generation of hydroxyl radical free radical OH
Simultaneously
Three, organic mineralising
R+·OH→H
2O+R· (11)
The present invention designs according to above-mentioned electrooxidation chemism.
High-density organic waste water incapable of degrading biochemically treatment process of the present invention and device design science, rational in infrastructure, the wastewater treatment power consumption is low, and water per ton generally speaking is that working cost is cheap about 0.5 degree electricity, and treatment effect is good.Waste water after the technology of the present invention is handled, not only COD
CrEffectively remove to some extent, and can make BOD in the waste water
5/ COD
CrDo not wait by being elevated to more than 25%, follow-up routine biochemistry or materialization treatment effect are given full play to less than 10%.
Method of the present invention and device are further described by following examples.
Description of drawings
Fig. 1 is a device synoptic diagram of realizing the high-density organic waste water incapable of degrading biochemically treatment process.
Embodiment
Embodiment 1: the processing of high-density organic waste water incapable of degrading biochemically in the carton production waste water, in the production process of packing case carton, two kinds of discharge of wastewater are arranged: a kind of is lucerne potato powder water, and lucerne potato powder slurrying cleaning of evaporator water and cardboard binding appts are washed machine flushing and floor and container flushing mixing water, COD
Cr10000～22000mg/l; A kind of is cardboard printing machinery wash water China ink dyestuff and floor, container wash-down water, the COD of waste water
Cr8000～20000mg/l has tensio-active agent in the water, germicidal action is arranged.
Two kinds of waste water are mixed in mixing pit, in the waste water after physico-chemical pretreatment is removed suspended substance, add a spot of oxygenant (H
2O
2), and add sulfuric acid and make the PH of waste water be transferred to 5, be about 1: 1 the continuous bubbling air in waste water of ratio with ejector with waste water and volume of air ratio simultaneously, by water distributor the waste water pressure injection is gone into the Electrooxidation tower inner bottom part then; Enter waste water in the Electrooxidation tower through being added with 18～20V external voltage volts DS parallel plate electric field and the packing layer that constitutes by gac, cast particle and metal oxide catalyst slowly and on, in the parallel plate electrostatic field of process and the oxidising process under the catalytic condition, remove the organism of part bio-refractory in the waste water; Waste water after the processing rises to cat head, flows into overflow groove and discharges, and the mud foreign material material in the waste water is discharged at the bottom of tower, thereby the electrooxidation of finishing high density bio-refractory thing organic waste water is handled.After Electrooxidation tower is handled, COD in the water outlet
CrClearance be 25～40%, PH=7～7.5.Again through materialization and the biochemical treatment of routine, just can reach the national grade one discharge standard (COD≤100mg/L) of waste water thereafter.The effective hydraulic detention time of Electrooxidation tower is 2 hours.
Embodiment 2: the processing of high-density organic waste water incapable of degrading biochemically during button is produced, two kinds of discharge of wastewater are arranged in the button production: a kind of is the moulding of resin bar, mould, container and the floor wash-down water that discharge in the workshop, COD
Cr12000～20000mg/l, and contain trieline and acetone composition; A kind of is button polishing water COD after the moulding
Cr1000～1200mg/l.
Two kinds of waste water are mixed in mixing pit, handling a spot of oxygenant (H of adding in the waste water of removing suspended substance through materialization
2O
2), and add sulfuric acid the pH value of waste water is transferred to 5, adopting ejector simultaneously is about 1: 1 ratio continuous bubbling air in waste water with waste water and volume of air ratio, by water distributor the waste water pressure injection is gone into the Electrooxidation tower inner bottom part then; Enter waste water in the Electrooxidation tower through being added with the 18V external voltage volts DS parallel plate electric field and the packing layer that constitutes by gac, cast particle and metal oxide catalyst slowly and on, in through the oxidising process under parallel plate electrostatic field and the catalytic condition, remove the organism of part bio-refractory in the waste water; Waste water after the processing rises to cat head, flows into overflow groove and discharges, and the mud foreign material material in the waste water is discharged at the bottom of tower, thereby the electrooxidation of finishing high density bio-refractory thing organic waste water is handled.Thereby the electrooxidation of finishing bio-refractory thing in the high concentrated organic wastewater is handled.After Electrooxidation tower is handled, again after conventional materialization and biochemical treatment, just can reach the national grade one discharge standard (COD≤100mg/L) of waste water.The effective hydraulic detention time of Electrooxidation tower is 2 hours.
Embodiment 3: can be clear that from Fig. 1, realize that the device of the inventive method comprises: an oxygenant dispensing kit 1, and this dispensing kit 1 inserts waste water by pipeline and pumps into pipe;
A pump 2, the suction port of pump 2 connect and pump into pipe, and the relief outlet of pump 2 inserts ejector 4 by pipeline, on the pipeline under meter 3 can be set;
An ejector 4, this ejector 4 feed waste water by air suction pipe with air, provide oxidation required oxygen.The relief outlet of ejector 4 is connected to the pipeline that communicates with Electrooxidation tower base fabric water pipe 5;
An Electrooxidation tower 14, this Electrooxidation tower 14 by tower body 9, be arranged on the sieve tray 6 in the tower body 9 and form with the packing layer 7 that parallel way is laid in the battery lead plate 8 on the sieve tray 6 and is filled in 8 of battery lead plates.Described tower body 9 is a square structure.Described battery lead plate 8 is an A3 steel or stainless steel flat board, and battery lead plate 8 all is connected to the power supply that voltage is 18～24V, and the bottom surface of tower body 9 is provided with shore pipe 12, and the bottom of tower body 9 is provided with water distributor 5.Described water distributor 5 is φ 8～10mm hole water distributor.The top of tower body 9 is provided with filter 10 and overflow groove 13, and overflow groove 13 is provided with a pulsed water outlet device 11.Described filter 10 is polystyrene injection moulding standardized component.The spacing that described battery lead plate is 8 is 25～50mm, and battery lead plate is laid with parallel way.Described packing layer 7 is made of the activated carbon granule of diameter=5mm, cast particle and the metal oxide catalyst of diameter=10mm, and the volume proportion of activated carbon granule and cast particle is 1: 1.Metal oxide catalyst is TiO
2Or Al
2O
3The electrooxidation agent can be according to the waste water quality difference through testing selected H
2O
2, CLO
2Or NaCLO
3Processing parameters such as electrooxidation hydraulic detention time, voltage swing all should be selected according to experiment, and different water quality has different removal effects.
Claims (8)
1, a kind of high-density organic waste water incapable of degrading biochemically treatment process, this method comprises the following steps:
(1) processed water is carried out pre-treatment, remove suspended substance;
(2) in waste water, drop into oxygenant, and add the PH=5 that sulfuric acid makes waste water;
(3) adopt ejector continuous bubbling air in waste water, by water distributor the waste water pressure injection is gone into the Electrooxidation tower inner bottom part then;
(4) enter the interior waste water of Electrooxidation tower, volts DS parallel plate electric field through being added with 18～24V impressed voltage and the packing layer that constitutes by activated carbon granule, cast particle and metal oxide catalyst slowly and on, remove the organism of part bio-refractory in the waste water in through the oxidising process under parallel plate electrostatic field and the catalytic condition, molecular conversion also will take place in residual organic substances;
(5) waste water after the processing rises to cat head, flows into overflow groove and discharges, and the mud foreign material in the waste water are discharged at the bottom of tower, thereby the electrooxidation of finishing bio-refractory thing in the high concentrated organic wastewater is handled.
2, method according to claim 1 is characterized in that: the sewage and the air content ratio that enter Electrooxidation tower by ejector are about 1: 1.
3, be used to realize the device of the method for claim 1, this device comprises:
An oxygenant dispensing kit, this dispensing kit inserts the waste water pump inhalent siphon by pipeline;
A pump, pump intake connect and pump into pipe, and the relief outlet of pump inserts ejector by pipeline;
An ejector, this ejector forcibly feeds waste water with air by air suction pipe, provides oxidation required oxygen, and the relief outlet of ejector is connected to the pipeline that communicates with Electrooxidation tower base fabric water pipe;
An Electrooxidation tower, this Electrooxidation tower by tower body, be arranged on the intravital sieve tray of tower and be laid in the battery lead plate on the sieve tray and be filled between battery lead plate the packing layer that constitutes by gac, cast particle and metal oxide catalyst and form with parallel way, battery lead plate all is connected to the direct supply that voltage is 18～24V, the bottom surface of tower body is provided with shore pipe, the bottom of tower body is provided with water distributor, the top of tower body is provided with filter and overflow groove, and the tower body overflow groove is provided with one and is interrupted water outlet device.
4, device according to claim 3 is characterized in that: described interruption water outlet device adds magnetic valve with pulsed water outlet device or fluid level controller.
5, device according to claim 3 is characterized in that: the spacing between described battery lead plate is 25～50mm.
6, device according to claim 3 is characterized in that: the activated carbon granule diameter is 5mm, and the cast particle diameter is 10mm.
7, according to claim 3 or described device, it is characterized in that: the volume proportion of activated carbon granule and cast particle is 1: 1.
8, according to claim 1 or 3 described devices, it is characterized in that: metal oxide catalyst is TiO
2Or Al
2O
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB00134787XA CN1186268C (en) | 2000-12-02 | 2000-12-02 | Method and device for treatment of high-density organic waste water incapable of degrading biochemically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB00134787XA CN1186268C (en) | 2000-12-02 | 2000-12-02 | Method and device for treatment of high-density organic waste water incapable of degrading biochemically |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1295033A CN1295033A (en) | 2001-05-16 |
| CN1186268C true CN1186268C (en) | 2005-01-26 |
Family
ID=4596411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB00134787XA Expired - Fee Related CN1186268C (en) | 2000-12-02 | 2000-12-02 | Method and device for treatment of high-density organic waste water incapable of degrading biochemically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1186268C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MY143602A (en) * | 2003-01-24 | 2011-06-15 | Teoh Eng-Chye | Methods for the removal of organic nitrogen, organic and inorganic contaminants from an aqueous liquid |
| CN100336735C (en) * | 2004-03-12 | 2007-09-12 | 云南大学 | Method and apparatus for treating high concentrated organic wastewater by hydrothermal electrical catalytic oxidation |
| CN102417231B (en) * | 2011-10-24 | 2013-06-05 | 沈阳建筑大学 | Adjustable multi-electrode low-voltage electricity-organism reactor |
| CN108423893A (en) * | 2018-03-20 | 2018-08-21 | 武汉轻工大学 | Secondary effluent of municipal sewage plant regeneration treatment system and its secondary effluent regeneration treating method |
-
2000
- 2000-12-02 CN CNB00134787XA patent/CN1186268C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1295033A (en) | 2001-05-16 |
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20010516 Assignee: SHENZHEN HUAJINYUAN BUSINESS SERVICE CO., LTD. Assignor: Shenzhen Yuli Technology Co., Ltd. Contract record no.: 2013440020280 Denomination of invention: Method and device for treatment of high-density organic waste water incapable of degrading biochemically Granted publication date: 20050126 License type: Exclusive License Record date: 20130925 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050126 Termination date: 20161202 |
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| CF01 | Termination of patent right due to non-payment of annual fee |