CN106065473A

CN106065473A - Realize iron and steel parts oxidation processing technique and the system of sewage zero-discharge

Info

Publication number: CN106065473A
Application number: CN201610527891.5A
Authority: CN
Inventors: 陈衍旻
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-07-06
Filing date: 2016-07-06
Publication date: 2016-11-02
Anticipated expiration: 2036-07-06
Also published as: CN106065473B

Abstract

The invention discloses a kind of iron and steel parts oxidation processing technique realizing sewage zero-discharge, including oxidation pre-treatment, aoxidize main process and oxidative work-up, wherein, in addition to the last spray of described oxidative work-up uses tap water to carry out, remaining spray of described oxidation pre-treatment and oxidative work-up and embathe and water that the main process of described oxidation is used is all from described oxidation pre-treatment and oxidative work-up discharge and sewage after treatment；And the tap water consumption controlling the last spray of described oxidative work-up is equal to the water evaporation quantity in the main process of described oxidation.The invention also discloses a kind of iron and steel parts oxidization processing system realizing sewage zero-discharge.By implementing the present invention, it is possible to reach using water wisely and sewage zero-discharge, reach energy-saving and emission-reduction purpose truly simultaneously.

Description

Realize iron and steel parts oxidation processing technique and the system of sewage zero-discharge

Technical field

The present invention relates to technical field of metal material surface treatment, particularly relate to a kind of iron and steel work realizing sewage zero-discharge Part oxidation processing technique and system.

Background technology

Iron and steel parts passes through oxidation processes so that it is the oxide-film of Surface Creation protectiveness, and the color of thickness depends on iron and steel The process conditions of the apparent condition of workpiece, alloying component and oxidation processes, are typically black or black-and-blue, polished Surface Oxygen After change, bright in color is attractive in appearance, cast steel and siliceous higher special steel oxide-film is brown or pitchy.The thickness of film layer is about 0.6-1.6 μm, therefore, oxidation processes does not affect the precision of part.

Alkaline oxygenated method is under higher temperature conditions, enters in the sodium hydroxide aqueous slkali containing certain oxidant OK, oxidant and sodium hydroxide and metallic iron effect, generate with magnetic iron oxide (Fe₃O₄) it is the oxide-film of main component.Specifically , steel surface generates ferrous acid sodium under hot alkaline solution and oxidant effect, ferrous acid sodium further with the oxidation in solution Agent reaction generates sodium ferrite, Na₂FeO₂And Na₂Fe₂O₄A bigger dissolubility is had in concentrated base, but the meeting when both mix Interact and generate ferroso-ferric oxide Fe₃O₄, Fe₃O₄Dissolubility is little in the solution, crystallizes out when concentration reaches saturated, first Forming nucleus, longer great achievement crystal, finally join together complete film.

The alkaline oxygenated process technique of traditional iron and steel parts mainly includes aoxidizing pre-treatment, aoxidizing main process and oxidation Three technological processes of post processing, wherein:

Oxidation pre-treatment: iron and steel is after machining or heat treatment, and surface often exists greasy dirt and oxide skin, and this Influence whether the generation of oxide-film a bit.Accordingly, it would be desirable to carry out the surface aoxidizing pre-treatment to clear up iron and steel parts, generally comprise and remove Oil, spray washing, overflow embathe and the step such as pickling；

Aoxidize main process: put into by the iron and steel parts through peroxidating pre-treatment in the strong base solution that with the addition of oxidant, Process 15～90 minutes under the high temperature of about 140 °, generate with Fe at surface of steel workpiece₃O₄Oxide-film for main component；

Oxidative work-up: carry out sufficient spray washing after oxidation processes, overflow is embathed, to remove the alkalescence of surface of the work Material；Additionally for improving workpiece corrosion resistance, lubricity and antirust ability, need to carry out saponification, filling or oil sealing after oxidation and process.

Below, in conjunction with the traditional iron and steel parts oxidization processing system (streamline) shown in Fig. 1, to traditional iron and steel parts The flow process of alkaline oxygenated process technique be described in detail, specifically include following steps:

(1) for the first time spray: use tap water iron and steel parts to carry out cleaning showers 2～3 minutes, to wash away surface of the work Dust, iron powder and part greasy dirt；

(2) oil removing: iron and steel parts is put into degreasing tank degreasing degreasing 15～20 minutes, to remove iron and steel parts table further The greasy dirt in face；

(3) second time spray: use tap water that the iron and steel parts after oil removal treatment carries out cleaning showers 2～3 minutes；

(4) pickling: iron and steel parts is immersed in hydrochloric acid trough or other acid solutions and eliminate rust 15～30 minutes；

(5) overflow is embathed for the first time: is put into by the iron and steel parts after pickling in overflow soaker A and embathes, and wherein, overflows Stream soaker A uninterruptedly injects tap water；

(6) third time spray: use tap water that the iron and steel parts after embathing carries out cleaning showers 2～3 minutes, to rinse Clean surface of the work residual acid solution；

(7) oxidation: put into by iron and steel parts in heated oxide groove and aoxidize 15～90 minutes, to generate at surface of steel workpiece With Fe₃O₄Oxide-film for main component；

(8) cooling: the iron and steel parts after oxidation processes is put into and enters cooling process in accumulator tank (cold water)；

(9) overflow is embathed for the second time: is put in overflow soaker B by the iron and steel parts after cooling and embathes, wherein, overflows Stream soaker B uninterruptedly injects tap water；

(10) the 4th sprays: use tap water that the iron and steel parts after embathing is sprayed 2～3 minutes, dry to clean Clean surface of steel workpiece；

(11) oil sealing: iron and steel parts is put into emulsifying oil groove and carries out oil sealing process.

Wherein, above-mentioned steps (1)～step (6) are oxidation pretreatment process, and step (7)～(8) processed for oxidation is main Journey, step (9)～step (11) are oxidative work-up procedure.It addition, in above-mentioned oxidation pretreatment process and oxidative work-up mistake Cheng Zhong, after four times utilize tap water to spray and utilize for twice tap water to carry out after overflow is embathed the sewage of discharge (in Fig. 1 Shown in solid arrow direction) discharge from sewage draining exit after treatment tank processes.

Visible, in the oxidation processing technique of traditional iron and steel parts, owing to all adopting all spraying and embathe in step Processing with tap water, tap water usage amount is huge, causes water resource waste, is unfavorable for using water wisely.Accordingly, utilize certainly Quantity of wastewater effluent after water all sprays and embathes is big, and environment causes certain pollution.

Therefore, the oxidation technology of anxious a kind of new iron and steel parts to be developed, it is possible to reach simultaneously using water wisely and Sewage zero-discharge, reaches energy-saving and emission-reduction purpose truly.

Summary of the invention

The purpose of the embodiment of the present invention is to provide a kind of iron and steel parts oxidation processing technique realizing sewage zero-discharge and is System, it is possible to reach using water wisely and sewage zero-discharge simultaneously, reach energy-saving and emission-reduction purpose truly.

Embodiments provide a kind of iron and steel parts oxidation processing technique realizing sewage zero-discharge, before oxidation Process, aoxidize main process and oxidative work-up, in addition to the last spray of described oxidative work-up uses tap water to carry out, Remaining spray of described oxidation pre-treatment and oxidative work-up and embathe and water that the main process of described oxidation is used is all from Discharge and sewage after treatment in described oxidation pre-treatment and oxidative work-up；And control the last of described oxidative work-up The tap water consumption once sprayed is equal to the water evaporation quantity in the main process of described oxidation.

As the improvement of such scheme, the spray of described oxidation pre-treatment and oxidative work-up embathe discharged and warp Crossing the sewage after filtration treatment is primary cycle sewage, that the spray of described oxidative work-up is discharged and after neutralisation treatment Sewage be secondary cycle sewage；

Spray in described oxidation pre-treatment and embathe used water and be all from described primary cycle sewage；

In described oxidative work-up, remaining in addition to last spray sprays and embathes used water and be all from described Secondary cycle sewage.

As the improvement of such scheme, the first time spray in the spray of described oxidation pre-treatment and oxidative work-up and leaching Washing that discharged and after filtration treatment sewage is primary cycle sewage, sprays except described first time in described oxidative work-up That all sprays outside pouring are discharged and after neutralisation treatment sewage is secondary cycle sewage；

The water that first time spray in described oxidative work-up is used is from described primary cycle sewage, after described oxidation In process, remaining in addition to first time and last spray sprays and embathes used water and be all from the dirt of described secondary cycle Water.

As the improvement of such scheme, when described oxidation pre-treatment uses hydrochloric acid that iron and steel parts is carried out pickling, also wrap Include the process that described primary cycle sewage is removed chloride ion.

As the improvement of such scheme, also include the process that described primary cycle sewage is gone carbanion.

Embodiments provide a kind of iron and steel parts oxidization processing system realizing sewage zero-discharge, before oxidation Processing means, oxidation primary processing unit and oxidative work-up device, except the last spray of described oxidative work-up device is adopted Outside carrying out with tap water, described oxidation pretreating device and oxidative work-up device perform remaining spray and embathe and described The water that oxidation primary processing unit is used is all from described oxidation pretreating device and oxidative work-up device discharging and passing through Sewage after sewage-treatment plant process；Control described oxidative work-up device and implement the tap water consumption etc. of last spray Water evaporation quantity in described oxidation primary processing unit.

As the improvement of such scheme, described sewage-treatment plant includes filtration treatment device and neutralisation treatment device, Described oxidation pretreating device performs spray and oxidative work-up device performs to embathe that discharged and through filtration treatment device After sewage be primary cycle sewage, described oxidative work-up device perform spray discharged and after neutralisation treatment device Sewage be secondary cycle sewage；

Described oxidation pretreating device performs to spray and embathe used water to be all from described primary cycle sewage；

In described oxidative work-up, remaining in addition to performing last spray sprays and embathes used water and be all from Described secondary cycle sewage.

As the improvement of such scheme, described sewage-treatment plant includes filtration treatment device and neutralisation treatment device, Described oxidation pretreating device performs spray and oxidative work-up device performs spray and embathe that discharged for the first time and pass through Sewage after filtration treatment device is primary cycle sewage, in described oxidative work-up device in addition to performing spray of described first time All sprays discharged and sewage after neutralisation treatment device be secondary cycle sewage；

Described oxidative work-up device performs to spray the water used for the first time from described primary cycle sewage, described oxygen Change after-treatment device execution and be all from described except remaining for the first time and in addition to last spray sprays and embathe used water Secondary cycle sewage.

As the improvement of such scheme, when described oxidation pretreating device uses hydrochloric acid that iron and steel parts is carried out pickling, Described system also includes described primary cycle sewage is removed the device that chloride ion processes.

As the improvement of such scheme, described system also includes going described primary cycle sewage at carbanion The device of reason.

Embodiments provide a kind of iron and steel parts oxidation processing technique realizing sewage zero-discharge, including step:

Iron and steel parts is sprayed by the sewage in S1, employing primary cycle cesspool；

S2, iron and steel parts is put into heated oxide groove carries out oil removal treatment；

S3, the iron and steel parts after oil removal treatment is put in accumulator tank and embathes；

Iron and steel parts after embathing is sprayed by the sewage in S4, employing primary cycle cesspool；

S5, iron and steel parts is put into lead-over groove embathe；

S6, iron and steel parts is immersed in descaling bath and carry out pickling；

S7, iron and steel parts is put into lead-over groove embathe；

Iron and steel parts after embathing is sprayed by the sewage in S8, employing primary cycle cesspool；

S9, iron and steel parts is put in accumulator tank and embathes；

S10, iron and steel parts is put in heated oxide groove and aoxidize；

S11, the iron and steel parts after oxidation processes is put in accumulator tank cool down；

S12, the iron and steel parts after cooling is put into soaker embathes；

Iron and steel parts is sprayed by the sewage in S13, employing secondary cycle cesspool；

Iron and steel parts is sprayed by S14, employing tap water；

S15, iron and steel parts is carried out oil sealing process；

Wherein, above-mentioned steps S1～step S9 are the main processing procedure of oxidation for oxidation pretreatment process, step S10～S11, Step S12～step S15 are oxidative work-up procedure；Spray in described oxidation pretreatment process and by described soaker The sewage discharged forms described primary cycle sewage after filtration treatment；Spray in described oxidative work-up procedure is discharged Sewage forms described secondary cycle sewage after neutralisation treatment；

Water in described accumulator tank and lead-over groove is from described primary cycle sewage；The water of described heated oxide groove is from institute State accumulator tank；Water in described soaker is from described secondary cycle sewage；

By the tap water consumption in rate-determining steps S14 so that it is evaporate with the moisture in described heated oxide groove, accumulator tank Measure equal.

As the improvement of such scheme, described lead-over groove includes First Transition groove and the second lead-over groove, described First Transition Water in groove is from described primary cycle sewage, and the water in described second lead-over groove is from described First Transition groove；

Described step S5 is particularly as follows: are put into First Transition groove by iron and steel parts for priority and the second lead-over groove embathes；

Described step S7 is particularly as follows: are put into the second lead-over groove by iron and steel parts for priority and First Transition groove embathes.

As the improvement of such scheme, between described step S11 and step S13, further comprise the steps of:

Use the sewage in primary cycle cesspool that the iron and steel parts after cooling is sprayed, and the dirt discharged after spray Water forms described primary cycle sewage after filtration treatment.

As the improvement of such scheme, when using hydrochloric acid that iron and steel parts is carried out pickling in described step S6, described side Method also includes the process step that described primary cycle sewage is removed chloride ion.

Embodiments provide a kind of iron and steel parts oxidization processing system realizing sewage zero-discharge, including heating oxygen Change groove, accumulator tank, the first spray district, lead-over groove, pickling tube, soaker, the second spray district, emulsifying oil groove, sedimentation tank, one-level are followed Environmental pollution pond and secondary cycle cesspool, wherein:

Described heated oxide groove is used for heated oxide and oil removing, and the iron and steel parts taken out from described heated oxide groove is the most first Embathed by accumulator tank, and the iron and steel parts after before putting into pickling tube or taking out from pickling tube all first pass through lead-over groove and embathes, Described first spray district spray before iron and steel parts aoxidizes, the spray after iron and steel parts aoxidizes of the described second spray district Drench, described soaker embathing after iron and steel parts aoxidizes；

Described first spray district, soaker flows into described one-level after sewage being discharged to sedimentation tank filter by sewage pipe Circulating sewage pond；Primary cycle sewage in described primary cycle cesspool can pump out and add to described returning by pump and water pipe Receive groove, lead-over groove and the spray as described first spray district to use；

The sewage that described second spray district discharges flows in secondary cycle cesspool and is neutralized process, described secondary cycle Secondary cycle sewage in cesspool can pump out and add to described soaker and as described second spray by pump and water pipe The spray drenching district uses；Described second spray district is also associated with running water pipe to spray use for the last time；

The water of described heated oxide groove is from described accumulator tank；

By controlling the displacement of described running water pipe so that it is evaporate with the moisture in described heated oxide groove, accumulator tank Measure equal.

Put into the iron and steel parts before pickling tube carries out pickling successively to be embathed by First Transition groove and the second lead-over groove；From acid Iron and steel parts after taking out in wash pool is successively by embathing in the second lead-over groove and First Transition groove.

As the improvement of such scheme, described descaling bath is dilute hydrochloric acid groove, in described primary cycle cesspool put into chlorine from Sub-remover.

Compared with prior art, the iron and steel parts oxidation processing technique of sewage zero-discharge that realizes disclosed by the invention is by removing Outside the last spray of described oxidative work-up uses tap water to carry out, remaining spray of oxidation pre-treatment and oxidative work-up Drench and embathe and water that the main process of described oxidation is used be all from described oxidation pre-treatment and oxidative work-up discharge and Recycling sewage after treatment；And by controlling the tap water consumption etc. of the last spray of described oxidative work-up Water evaporation quantity in the main process of described oxidation such that it is able to simultaneously reach using water wisely and sewage zero-discharge, reaches true Energy-saving and emission-reduction purpose in positive meaning.

Accompanying drawing explanation

Fig. 1 is the system framework schematic diagram of the oxidation processing technique performing iron and steel parts in prior art.

Fig. 2 is that in the embodiment of the present invention 1, the structure of a kind of iron and steel parts oxidization processing system realizing sewage zero-discharge is shown It is intended to.

Fig. 3 is that in the embodiment of the present invention 2, the flow process of a kind of iron and steel parts oxidation processing technique realizing sewage zero-discharge is shown It is intended to.

Fig. 4 is that in the embodiment of the present invention 3, the structure of a kind of iron and steel parts oxidization processing system realizing sewage zero-discharge is shown It is intended to.

Fig. 5 is that in the embodiment of the present invention 4, the flow process of a kind of iron and steel parts oxidation processing technique realizing sewage zero-discharge is shown It is intended to.

Fig. 6 is that in the embodiment of the present invention 5, the structure of a kind of iron and steel parts oxidization processing system realizing sewage zero-discharge is shown It is intended to.

Fig. 7 is that in the embodiment of the present invention 6, the flow process of a kind of iron and steel parts oxidation processing technique realizing sewage zero-discharge is shown It is intended to.

Fig. 8 is that in the embodiment of the present invention 7, the structure of a kind of iron and steel parts oxidization processing system realizing sewage zero-discharge is shown It is intended to.

Fig. 9 is that in the embodiment of the present invention 8, the flow process of a kind of iron and steel parts oxidation processing technique realizing sewage zero-discharge is shown It is intended to.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise Embodiment, broadly falls into the scope of protection of the invention.

Embodiment 1

See Fig. 2, be a kind of iron and steel parts oxidization processing system realizing sewage zero-discharge of embodiment of the present invention offer Structural representation.This iron and steel parts oxidization processing system realizing sewage zero-discharge includes aoxidizing pretreating device 101, oxidation Primary processing unit 102 and oxidative work-up device 103, wherein, described oxidation pretreating device 101 and oxidation primary processing unit 102 sewage discharged all carry out sewage disposal through sewage-treatment plant 104, the dirt after sewage-treatment plant 104 processes Water provides as the water of described oxidation pretreating device 101, oxidative work-up device 103 and described oxidation primary processing unit 102 Source recycle, described oxidation pretreating device 101, oxidative work-up device 103 utilize described circulating sewage as spray and Embathing use (in addition to the last spray of whole technique uses tap water), described oxidative work-up device 103 connects from the beginning Water pipe is to use tap water to spray operation for the last time, and wherein tap water usage amount is Q1, and main process of described oxidation fills Putting 102 water evaporation quantities caused because of heating is Q2, by controlling usage amount Q1 of tap water equal to oxidation primary processing unit The water evaporation quantity Q2 of 102, thus realize sewage zero-discharge.

Wherein, sewage-treatment plant 104 is mainly used in filtration treatment, to filter out the ferrum oxide sediment in sewage and scum silica frost (these be mainly derived from oxidation primary processing unit 102, take out of with iron and steel parts and through oxidative work-up device 103 spray/ Discharge through sewage after embathing) etc..It addition, in the present embodiment, if oxidation pretreating device 101 uses hydrochloric acid as rust remover pair Iron and steel parts carries out pickling, then described sewage-treatment plant 104 also includes that removing chloride processes.Preferably, at described sewage Reason device 104 can also include that de-carbon acid ion processes.

Further, the sewage discharged after sewage-treatment plant 104 is also recycled after neutralizing device 105 In oxidative work-up device 103, because the sewage entering sewage-treatment plant 104 is overall in alkalescence, after improving oxidation The processing means 103 cleaning performance to the alkaline solution of surface of steel workpiece, it is necessary to by the sewage recycled through neutralizing Process (such as adding acid) the most recycled in oxidative work-up device 103.

Embodiment 2

See Fig. 3, be a kind of iron and steel parts oxidation processing technique realizing sewage zero-discharge of embodiment of the present invention offer Schematic flow sheet.The iron and steel parts oxidation processing technique realizing sewage zero-discharge of the present embodiment includes aoxidizing pre-treatment step S201, aoxidize main process step S202 and Oxidative workup S203, wherein, perform described oxidation pre-treatment step S201 and Aoxidize the sewage that main process step S202 discharged and all carry out sewage disposal through sewage treatment step S204, through sewage disposal Process the sewage after step S204 as the spray in described oxidation pre-treatment step S201, Oxidative workup S203 and leaching Wash use (in addition to the last spray of whole technique uses tap water) and as described oxidation main process step S202 Water resource recycles, and sprays iron and steel parts for the last time and operate with from the beginning in described Oxidative workup S203 Water is carried out, and wherein tap water usage amount is Q1, and in described oxidation main process step S202, water evaporation quantity is Q2, by controlling Usage amount Q1 of tap water is equal to the water evaporation quantity Q2 of main process step S202 of oxidation, thus realizes sewage zero-discharge.

Wherein, sewage treatment step S204 is substantially carried out filtration treatment, to filter out the ferrum oxide sediment in sewage and to float (these are mainly derived from the oxidation processes aoxidized in main process step S202 to slag, take out of with iron and steel parts and locate after peroxidating Discharge through sewage after the spray/embathe of reason step S203) etc..It addition, in the present embodiment, if oxidation pre-treatment step S201 adopts As rust remover, iron and steel parts is carried out pickling with hydrochloric acid, then sewage treatment step S204 also includes performing at removing chloride Reason.Preferably, described sewage treatment step S204 can also carry out the process of de-carbon acid ion.

Further, the sewage discharged after sewage treatment step S204 also follows after neutralisation treatment step S205 again Ring uses the spray in Oxidative workup S203 and embathes, because the sewage after sewage treatment step S204 is overall In alkalescence, in order to improve in Oxidative workup S203 the cleaning performance of the alkaline solution to surface of steel workpiece, it is necessary to By the sewage that recycles after neutralisation treatment (such as adding acid) recycled in Oxidative workup S203.

Embodiment 3

See Fig. 4, be a kind of iron and steel parts oxidization processing system realizing sewage zero-discharge of embodiment of the present invention offer Structural representation.This iron and steel parts oxidization processing system realizing sewage zero-discharge includes aoxidizing pretreating device 301, oxidation Primary processing unit 302 and oxidative work-up device 303.Wherein, iron and steel parts is sprayed by described oxidation pretreating device 301 The sewage that the sewage discharged and oxidative work-up device 303 are discharged after embathing iron and steel parts is all through filtration treatment Device 304 carries out filtration treatment, and the sewage after described filtration treatment device 304 filtration treatment forms primary cycle sewage, Described primary cycle sewage circulates as the water resource of described oxidation pretreating device 301 and described oxidation primary processing unit 302 Using, concrete, described oxidation pretreating device 301 utilizes described primary cycle sewage as spray and to embathe use.

The sewage that described oxidative work-up device 303 is discharged after spraying iron and steel parts is through neutralizing device 305 Being neutralized process, the sewage after described neutralization device 305 processes forms secondary cycle sewage, described secondary cycle sewage Water resource as described oxidative work-up device 303 recycles, and concrete, described oxidative work-up device 303 uses institute State secondary cycle sewage and as spray and embathe use (in addition to the last spray of whole technique uses tap water), described oxygen Change after-treatment device 303 and connect running water pipe to use tap water to spray operation, wherein tap water usage amount for the last time For Q1, and the water evaporation quantity that described oxidation primary processing unit 302 causes because of heating is Q2, by controlling the use of tap water Amount Q1 is equal to the water evaporation quantity Q2 of oxidation primary processing unit 302, thus realizes sewage zero-discharge.

Wherein, (these mainly come for filtration treatment device 304 is mainly used in filtering out in sewage ferrum oxide sediment and scum silica frost Come from oxidation primary processing unit 302, take out of with iron and steel parts and arrange through sewage after the embathing of oxidative work-up device 303 Go out) etc..It addition, in the present embodiment, if oxidation pretreating device 301 uses hydrochloric acid, as rust remover, iron and steel parts is carried out acid Wash, then the primary cycle sewage through described filtration treatment device 304 also carries out chloride ion through removing chloride processing means After removal recycled in oxidation pretreating device 301 and oxidation primary processing unit 302.Preferably, the present embodiment also may be used To arrange de-carbon acid ion processing means so that described primary cycle sewage is carried out de-carbon acid ion process.

In the present embodiment, because the sewage that oxidative work-up device 303 is discharged is alkalescence, in order to improve oxidative work-up The device 303 cleaning performance to the alkaline solution of surface of steel workpiece, it is necessary to by the sewage of recycling through neutralisation treatment (such as adding acid) is the most recycled in oxidative work-up device 303.

Embodiment 4

See Fig. 5, be a kind of iron and steel parts oxidation processing technique realizing sewage zero-discharge of embodiment of the present invention offer Schematic flow sheet.The iron and steel parts oxidation processing technique realizing sewage zero-discharge of the present embodiment includes aoxidizing pre-treatment step S401, aoxidize main process step S402 and Oxidative workup S403.Wherein, perform in described oxidation pre-treatment step S401 The sewage discharged of spray and Oxidative workup S403 in embathe after the sewage discharged all through filtration treatment Step S404 carries out filtration treatment, the sewage formation primary cycle sewage after described filtration treatment step S404, and described one Level circulating sewage recycles as the water resource of described oxidation main process step S402 and walks as described oxidation pre-treatment Spray in rapid S401 and embathe use.

The sewage discharged after performing the spray in described Oxidative workup S403 is through neutralisation treatment step S405 Being neutralized process, the sewage after described neutralisation treatment step S405 forms secondary cycle sewage, and described secondary cycle is dirty Water is as the spray of described Oxidative workup S403 and embathes use (except the last spray of whole technique uses from the beginning Water is outer), iron and steel parts is sprayed by described Oxidative workup S403 for the last time and operates with tap water and carry out, its Middle tap water usage amount is Q1, and in described oxidation main process step S402, water evaporation quantity is Q2, by controlling tap water Usage amount Q1 is equal to the water evaporation quantity Q2 of main process step S402 of oxidation, thus realizes sewage zero-discharge.

Wherein, (these are main for filtration treatment step S404 is mainly used in filtering out in sewage ferrum oxide sediment and scum silica frost Derive from the oxidation processes aoxidized in main process step S402, take out of with iron and steel parts and through Oxidative workup S403's Discharge through sewage after embathing).It addition, in the present embodiment, if oxidation pre-treatment step S401 uses hydrochloric acid as rust remover pair Iron and steel parts carries out pickling, and the present embodiment further preferably includes that primary cycle sewage is performed removing chloride processes.Preferably, this reality Execute example and also include that primary cycle sewage is performed de-carbon acid ion processes.

In the present embodiment, in order to improve in Oxidative workup S403 the clear of alkaline solution to surface of steel workpiece Wash effect, it is necessary to by recycle sewage (in alkalescence) after neutralisation treatment (such as adding acid) recycled to oxygen Change in post-processing step S403.

Embodiment 5

See Fig. 6, be a kind of iron and steel parts oxidization processing system realizing sewage zero-discharge of embodiment of the present invention offer Structural representation.This iron and steel parts oxidization processing system realizing sewage zero-discharge includes aoxidizing pretreating device 501, oxidation Primary processing unit 502 and oxidative work-up device 503.Wherein, iron and steel parts is sprayed by described oxidation pretreating device 501 The sewage discharged and oxidative work-up device 503 carry out to iron and steel parts spraying for the first time that (attention is in oxidative work-up For the first time spray) and the sewage discharged after embathing all carry out filtration treatment through filtration treatment device 504, through described filtration Sewage after processing means 504 filtration treatment forms primary cycle sewage, and described primary cycle sewage is located as before described oxidation The water resource of reason device 501, described oxidation primary processing unit 502 and oxidative work-up device 503 recycles, concrete, Described oxidation pretreating device 301 utilizes described primary cycle sewage as spray and to embathe use, and described oxidative work-up fills Putting 503 utilizes described primary cycle sewage to use as spray for the first time.

Described oxidative work-up device 503 sprays the sewage that (in addition to spraying for the first time) is discharged afterwards to iron and steel parts Being neutralized process through neutralizing device 505, the sewage after described neutralization device 505 processes forms secondary cycle sewage, Described secondary cycle sewage recycles as the water resource of described oxidative work-up device 303, concrete, locates after described oxidation Reason device 503 uses described secondary cycle sewage as remaining spray in addition to for the first time and spraying for the last time and to embathe use (last spray uses outside tap water), described oxidative work-up device 503 connects running water pipe to use tap water to carry out Spraying operation for the last time, wherein tap water usage amount is Q1, and the water that described oxidation primary processing unit 502 causes because of heating Dividing evaporation capacity is Q2, by controlling the usage amount Q1 water evaporation quantity Q2 equal to oxidation primary processing unit 502 of tap water, thus Realize sewage zero-discharge.

Wherein, (these mainly come for filtration treatment device 504 is mainly used in filtering out in sewage ferrum oxide sediment and scum silica frost Come from oxidation primary processing unit 502, take out of with iron and steel parts and spray through the first time of oxidative work-up device 503/embathe Discharge by sewage) etc..It addition, in the present embodiment, if oxidation pretreating device 501 uses hydrochloric acid as rust remover to iron and steel Workpiece carries out pickling, then through the primary cycle sewage of described filtration treatment device 504 also through removing chloride processing means After carrying out chloride ion removal recycled to oxidation pretreating device 501, described oxidation primary processing unit 502 and oxidation after In processing means 503.Preferably, the present embodiment can also arrange de-carbon acid ion processing means with dirty to described primary cycle Water carries out de-carbon acid ion process.

In the present embodiment, because the sewage that oxidative work-up device 503 is discharged is alkalescence, in order to improve oxidative work-up The device 503 cleaning performance to the alkaline solution of surface of steel workpiece, it is necessary to by the sewage of recycling through neutralisation treatment (such as adding acid) is the most recycled in oxidative work-up device 503.

Embodiment 6

See Fig. 7, be a kind of iron and steel parts oxidation processing technique realizing sewage zero-discharge of embodiment of the present invention offer Schematic flow sheet.The iron and steel parts oxidation processing technique realizing sewage zero-discharge of the present embodiment includes aoxidizing pre-treatment step S601, aoxidize main process step S602 and Oxidative workup S603.Wherein, perform in described oxidation pre-treatment step S601 The sewage discharged of spray and Oxidative workup S603 in first time spray and the sewage discharged after embathing All carrying out filtration treatment through filtration treatment step S604, the sewage after described filtration treatment step S604 forms one-level and follows Environmental pollution water, described primary cycle sewage recycles, as described oxygen as the water resource of described oxidation main process step S602 Change the spray in pre-treatment step S601 and embathe use and make as the first time spray in Oxidative workup S603 With.

Perform the sewage process that the spray in described Oxidative workup S603 (in addition to spraying for the first time) is discharged afterwards Neutralisation treatment step S605 is neutralized process, and it is dirty that the sewage after described neutralisation treatment step S605 forms secondary cycle Water, described secondary cycle sewage as described Oxidative workup S603 except remaining for the first time and in addition to last spray Spray and embathe use (last spray uses outside tap water), iron and steel parts is entered by described Oxidative workup S603 The last spray of row operates with tap water to be carried out, and wherein tap water usage amount is Q1, and described oxidation main process step In S602, water evaporation quantity is Q2, is evaporated equal to the moisture aoxidizing main process step S602 by usage amount Q1 controlling tap water Amount Q2, thus realize sewage zero-discharge.

Wherein, (these are main for filtration treatment step S604 is mainly used in filtering out in sewage ferrum oxide sediment and scum silica frost Derive from the oxidation processes aoxidized in main process step S602, take out of with iron and steel parts and through Oxidative workup S603's Discharge through sewage after spraying/embathe for the first time).It addition, in the present embodiment, if oxidation pre-treatment step S601 uses hydrochloric acid to make For rust remover, iron and steel parts being carried out pickling, the present embodiment further preferably includes that primary cycle sewage is performed removing chloride processes. Preferably, the present embodiment also includes that primary cycle sewage is performed de-carbon acid ion processes.

In the present embodiment, in order to improve in Oxidative workup S603 the clear of alkaline solution to surface of steel workpiece Wash effect, it is necessary to by recycle sewage (in alkalescence) after neutralisation treatment (such as adding acid) recycled to oxygen Change in post-processing step S603.

Embodiment 7

With reference to Fig. 8, present embodiment discloses a kind of iron and steel parts oxidization processing system (flowing water realizing sewage zero-discharge Line), this iron and steel parts oxidization processing system realizing sewage zero-discharge includes that heated oxide groove 701, accumulator tank 702, first spray Drench district 703, First Transition groove the 704, second lead-over groove 705, dilute hydrochloric acid pond the 706, first soaker the 707, second soaker 708, Second spray district 709, emulsifying oil groove 710, sedimentation tank 711, primary cycle cesspool 712 and secondary cycle cesspool 713, its In:

Sewage is arranged by described first spray district the 703, first soaker 707 and the second soaker 708 by sewage pipe Going out to sedimentation tank 711, sedimentation tank 711 is connected by filter screen with primary cycle cesspool 712, and the sewage in sedimentation tank 711 passes through Flow in primary cycle cesspool 712 after the filtration of filter screen.Wherein, the dirt of described first soaker the 707, second soaker 708 Water outlet all with valve switch, controls the opening and closing of outfall by valve switch.

Sewage in described primary cycle cesspool 712 is primary cycle sewage, in described primary cycle cesspool 712 Primary cycle sewage can pump out and add to described accumulator tank 702, First Transition groove 704 and as described by pump and water pipe The spray in the first spray district 703 operates with.

Sewage is discharged to secondary cycle cesspool 713 by sewage pipe and is neutralized place by described second spray district 709 Reason, the sewage band alkalescence discharged due to described second spray district 709, it is therefore desirable to add toward described secondary cycle cesspool 713 Acid is to neutralize.Sewage in described secondary cycle cesspool 713 is secondary cycle sewage, in described secondary cycle cesspool 713 Secondary cycle sewage can by pump and water pipe pump out and add to described first soaker the 707, second soaker 708 and make Spray (except the last spray of whole oxidation processes) for described second spray district 709 operates with.Described second spray District 709 is also associated with running water pipe, and described running water pipe is provided with booster pump, and tap water is formed by the effect of described booster pump The spray (the last spray of whole oxidation processes) being re-used as described second spray district 709 after pressurized water operates with.

Oxidation solution in described heated oxide groove 701 is the sodium hydroxide aqueous slkali containing certain oxidant, owing to adding Hot temperature at about 140 °, average water evaporation quantity about 8 the most per hour in a heated state of the solution in described heated oxide groove 701 Rise, stop water evaporation quantity overnight about 10 liters after heating.And accumulator tank 702 is mainly used in: by iron and steel parts from heated oxide groove Taking out to be immediately placed in accumulator tank 702 in 701 and embathe cooling, therefore the solution in accumulator tank 702 is owing to absorbing iron and steel parts oxygen Heat after change, its water evaporation quantity about 5～10 liters of water every day.

In the present embodiment, described heated oxide groove 701, in addition to as oxidation processes, is additionally operable to oil removing.Due to heating Oxidation solution alkaline (dense, about 600 grams～800 grams per liters) in oxidation trough, its dirt-removing power is extremely strong, directly by steel Ironworker's part is put into and is carried out oil removal treatment in heated oxide groove, can effectively remove the greasy dirt of surface of steel workpiece, and without volume The outer degreasing tank that arranges, reduces equipment cost.Owing to the first time spray before using heated oxide groove 701 oil removing is to use one-level Iron and steel parts is carried out and preliminary oil removing by the sewage in circulating sewage pond 712, due to the dirt in primary cycle cesspool 712 Alkaline relatively strong (pH value is more than 13), and in primary cycle cesspool 712, periodically add Surfactant OP-10, because of Sewage in this primary cycle cesspool 712 has stronger oil removing ability, it is possible to the preliminary greasy dirt removing surface of steel workpiece, So that the greasy dirt in heated oxide groove 701 will not be too many.

Wherein, the primary cycle sewage in the described primary cycle cesspool 712 in water source in accumulator tank 702, and heat Water source accumulator tank 702 in oxidation trough 701.When water deficient in heated oxide groove 701, can be artificially from accumulator tank Take appropriate solution in 702 to add in heated oxide groove 701.It is of course also possible to by the water pipe with controllable check valve Connect heated oxide groove 701 and accumulator tank 702, by controlling the ON/OFF of one-way cock to control the solution in accumulator tank 702 Automatically flow in heated oxide groove 701 and control the solution volume flowed into.Due to the water source accumulator tank in heated oxide groove 701 702, and with the sodium hydroxide of certain oxidant in the solution in accumulator tank 702, therefore, the past heating oxygen with prior art Change groove 701 adds tap water and compares, and the present invention can effectively reduce the oxidant cost in oxidation solution.

Water in described First Transition groove 704 is from the primary cycle sewage in described primary cycle cesspool 712, described Water in second lead-over groove 705 is from described First Transition groove 704.When water deficient in the second lead-over groove 705, can be with people Add in the second lead-over groove 705 for taking appropriate solution from First Transition groove 704.It is of course also possible to by with controlled The water pipe of one-way cock connects First Transition groove 704 and the second lead-over groove 705, by controlling the ON/OFF of one-way cock with control Solution in First Transition groove 704 processed automatically flows in the second lead-over groove 705 and controls the solution volume flowed into.Due to iron and steel work Part is successively put after the alkaline solution of heated oxide groove 701 takes out after First Transition groove the 704, second lead-over groove 705 again Enter dilute hydrochloric acid pond 706 and carry out pickling, and successively through the second transition after the acid solution taking-up that iron and steel parts is from dilute hydrochloric acid pond 706 Carrying out the operations such as oxidation after groove 705, First Transition groove 704 again, therefore the solution in First Transition groove 704 is than the second lead-over groove The pH value of the solution of 705 wants big, and the pH value of the solution in First Transition groove 704 is 5～8, the PH of the solution of the second lead-over groove 705 Value is 2～4.First Transition groove 704 and the second lead-over groove 705 can preferably protect the solution composition in dilute hydrochloric acid pond 706, keep away Exempt from the alkaline solution that iron and steel parts brings and have influence on the quality of pickling；It addition, also be able to preferably reduce iron and steel parts from dilute salt Acid pond 706 is taken out as directly spray causes acid solution to be discharged in primary cycle cesspool 712, so that primary cycle cesspool Primary cycle sewage in 712 keeps pH value (certain, due to the oxidation solution concentration in heated oxide groove 701 too more than 13 Height, the acidity that iron and steel parts brings out through overpickling is insignificant relative to the basicity brought out through heated oxide groove).

Further, since the present embodiment uses hydrochloric acid, as rust remover, iron and steel parts is carried out pickling, described primary cycle is dirty Pond 712 needs add chloride ion remover primary cycle sewage is carried out the process of removing chloride, get rid of in sewage The strong oxidizing property of chlorine residue, thus the harm that the strong oxidizing property eliminating chlorine residue is brought, because chloride ion excess can make heated oxide groove In the poisoning of oxidation solution (water in the oxidation solution of heated oxide groove 701 is originated from accumulator tank 702, and in accumulator tank 702 Water originate from primary cycle cesspool 712).But, in embodiment, according to other acid rust cleaning, as used phosphoric acid The mixed acid of adding citric acid carries out pickling, then without primary cycle sewage carries out the process of removing chloride.

As the preferred embodiment of the technical program, further, described primary cycle cesspool 712 adds carbonate Ion remaval agent (such as, calcium nitrate) is to carry out the process of carbanion.Because along with the oxidation in heated oxide groove is molten The prolongation of liquid validity period, owing to the carbon dioxide in air can gradually can accumulate in solution with the sodium hydroxide reaction in solution Sodium carbonate, when sodium carbonate runs up to certain depth, can produce harm to the quality of film layer, in order to not affect Fe₃O₄The matter of film layer Amount, needs to add calcium nitrate in primary cycle cesspool 712, makes calcium nitrate and sodium carbonate reaction generate precipitation of calcium carbonate, from And remove carbanion.

It should be understood that carbanion remover can also be added directly into the oxidation solution in heated oxide groove 701 In rather than primary cycle cesspool 712 in, it is also possible to obtain same effect.

It addition, in the present embodiment, the injection compression of the bottom even of described first soaker the 707, second soaker 708 Air, to be greatly enhanced the cleansing power of soaker, thus uses a small amount of tap water spray thoroughly to clean for last Totally provide guarantee.

It should be noted that for the upper strata oil slick in heated oxide groove 701, can directly salvage and collect waste oil groove (figure Do not show).And the precipitation waste residue deposited because of filtration in sedimentation tank is mainly composed of iron oxide red, can reclaim as pigment and purify again With.

The iron and steel parts oxidization processing system realizing sewage zero-discharge of the present embodiment by by the first spray district 703, the The sewage that one soaker 707 and the second soaker 708 are discharged is by forming primary cycle sewage after filtration treatment, and circulation makes Operate with for accumulator tank 702, First Transition groove 704 and the spray as described first spray district 703, and spray second Drench the soil pipe discharged in district 709 by forming secondary cycle sewage after neutralisation treatment, and recycle in the first soaker 707, Second soaker 708 and the spray as described second spray district 709 (spray use for the last time except whole oxidation processes Tap water) operate with, and control tap water consumption and the heated oxide groove of the last spray of whole oxidation processes 701, in accumulator tank 702, the moisture of evaporation is of substantially equal, thus greatly reduces the use of tap water and realize sewage zero-emission Put, reach energy-saving and emission-reduction purpose truly.

Embodiment 8

With reference to Fig. 9, in conjunction with the iron and steel parts oxidization processing system realizing sewage zero-discharge of the present invention shown in Fig. 8 (streamline), is described in detail the flow process of the zero blowdown oxidation treatment method of the iron and steel parts of the present invention, specifically includes Following steps S801～S816:

S801, for the first time spray: use the sewage in primary cycle cesspool 712 that iron and steel parts is carried out cleaning showers 2 ～3 minutes (carrying out in the first spray district 703), to wash away the dust of surface of the work, iron powder and part greasy dirt；

It should be noted that the sewage in described primary cycle cesspool 712 is referred to as primary cycle sewage, from described oxygen Change the spray of pre-treatment and the first time spray of oxidative work-up and embathe the discharged sewage drainage screen through sedimentation tank 711 Flow in primary cycle cesspool after filtration.

Owing to described primary cycle sewage is alkalescence, therefore using primary cycle sewage to carry out for the first time and spray, it deoils Effect is better than tap water.

If it addition, the acid cleaning process of oxidation pre-treatment uses hydrochloric acid, as rust remover, iron and steel parts is carried out pickling, then, Need in described primary cycle cesspool, add chloride ion remover and primary cycle sewage is carried out the process of removing chloride, go Remove the strong oxidizing property of chlorine residue in sewage, thus the harm that the strong oxidizing property eliminating chlorine residue is brought, because chloride ion excess meeting (water in the oxidation solution of heated oxide groove is originated from accumulator tank, and returns to make the oxidation solution in heated oxide groove 712 be poisoned Receive the water in groove to originate from primary cycle cesspool).But, if the acid cleaning process of oxidation pre-treatment uses other acid rust cleaning, As used the mixed acid of phosphoric acid adding citric acid to carry out pickling, then without primary cycle sewage carries out the process of removing chloride.

As the preferred embodiment of the technical program, further, in described primary cycle cesspool 712, carbonic acid is added Radical ion remover (such as, calcium nitrate) is to carry out the process of carbanion.Because along with the oxidation in heated oxide groove The prolongation of solution validity period, owing to the carbon dioxide in air can gradually can amass in solution with the sodium hydroxide reaction in solution Tired sodium carbonate, when sodium carbonate runs up to certain depth, can produce harm to the quality of film layer, in order to not affect Fe₃O₄Film layer Quality, needs to add calcium nitrate in primary cycle cesspool, makes calcium nitrate and sodium carbonate reaction generate precipitation of calcium carbonate, thus Remove carbanion.

S802, oil removing: iron and steel parts is put in heated oxide groove 701 degreasing degreasing 20～30 minutes, to remove further Remove the greasy dirt of surface of steel workpiece；

Wherein, the oxidation solution in heated oxide groove 701 is the sodium hydroxide aqueous slkali containing certain oxidant.Owing to adding Oxidation solution alkaline in thermal oxide groove 701, its dirt-removing power is extremely strong, directly puts in heated oxide groove by iron and steel parts Row oil removal treatment, can effectively remove the greasy dirt of surface of steel workpiece, and without additionally arranging degreasing tank, reduces equipment and become This.

S803, accumulator tank embathe: put in accumulator tank 702 by the iron and steel parts after oil removal treatment and embathe；

S804, second time spray: use the sewage in primary cycle cesspool 712 that the iron and steel parts after embathing is sprayed Drench and clean 2～3 minutes (carrying out in the first spray district 703)；

S805, lead-over groove embathe: iron and steel parts is successively put into First Transition groove 704 (pH value is 5～8) and the second transition Embathe up and down two to three times in groove 705 (pH value is 2～4)；

S806, pickling: iron and steel parts is immersed in dilute hydrochloric acid groove 706 and eliminate rust 15～30 minutes；

S807, lead-over groove embathe: iron and steel parts is successively put into the second lead-over groove 705 (pH value is 2～4) and First Transition Embathe up and down two to three times in groove (pH value is 5～8)；

S808, third time spray: use the sewage in primary cycle cesspool 712 that the iron and steel parts after embathing is sprayed Drench and clean 2～3 minutes, to rinse surface of the work residual acid solution (carrying out in the first spray district 703) well；

Need description, owing to the sewage in primary cycle cesspool is from the spray of described oxidation pre-treatment and oxygen That changes post processing embathes discharged sewage, and it contains sodium nitrite, therefore uses the sewage in primary cycle cesspool to steel Ironworker's part spray irrigation acid solution, it is possible to be prevented effectively from employing directly flushing with tap water acid solution because of the rust windward caused not in time Phenomenon.

S809, accumulator tank embathe: put in accumulator tank 702 by the iron and steel parts after spray irrigation acid solution and embathe；

S810, oxidation: iron and steel parts is put into the oxidation solution oxide 15 in heated oxide groove 701～90 minutes (preferably It is 25～40 minutes), to generate at surface of steel workpiece with Fe₃O₄Oxide-film for main component；

S811, cooling: the iron and steel parts after oxidation processes is put in accumulator tank 702 and carry out cooling process；

S812, the 4th spray (i.e. the first time spray of oxidative work-up): use the dirt in primary cycle cesspool 712 Water carries out cleaning showers 2～3 minutes to the iron and steel parts after cooling, to rinse the alkaline solution of surface of steel workpiece (first Spray district 703 is carried out)；

S813, soaker embathe: that is first put into by iron and steel parts in the first soaker 707 and the second soaker 708 is dirtier The cleaner soaker that soaker places into after embathing in the first soaker 707 and the second soaker 708 embathes；

Illustrate it is required that dirtier soaker refers to the soaker first put into by iron and steel parts, cleaner soaker refer to by Iron and steel parts puts into the soaker placed into after dirtier soaker embathes, due to first put into soaker time, surface of steel workpiece Alkaline solution more, therefore, the soaker first put into can be dirtier, after the soaker put into cleaner.When dirtier soaker (example Such as, the first soaker) in water the dirtiest and when cannot be carried out embathing operation, need to arrange the sewage in the first soaker Release (being drained in primary cycle cesspool after being specifically discharged in sedimentation tank filtration), and by secondary cycle cesspool Sewage (cleaner) adds in the first soaker, and at this time, cleaner soaker (the second soaker) originally is compared and again noted For having entered the first soaker of sewage in secondary cycle cesspool, reforming into dirtier soaker, the first soaker is then Become cleaner soaker, such repeatable operation.

S814, the 5th spray (i.e. the second time spray of oxidative work-up): use the dirt in secondary cycle cesspool 713 Water carries out cleaning showers 2～3 minutes to iron and steel parts, (sprays district 709 second rinsing surface of steel workpiece further well Carry out)；

It should be noted that the sewage in described secondary cycle cesspool 713 is referred to as secondary cycle sewage, from described oxygen That all sprays changed in post processing in addition to described first time sprays are discharged and after neutralisation treatment sewage.

Due in described oxidative work-up the sewage discharged of all sprays in addition to described first time sprays with necessarily Alkalescence, so needing to add acid in described secondary cycle cesspool 713 to neutralize.

S815, the 6th spray (i.e. the last spray of oxidative work-up): use tap water that iron and steel parts is carried out Spray 2～3 minutes, thoroughly to clean up surface of steel workpiece (carrying out in the second spray district 709)；

In order to reduce again the consumption of tap water while thoroughly cleaning up surface of steel workpiece, the present embodiment uses supercharging Pump is so that the water that last spray injects is pressurized water, and controls the water consumption that last spray injects so that it is with electricity The moisture equilibrium of evaporation in thermal oxide grass 701 and accumulator tank 702.

For example, it is assumed that heated oxide groove 701 power in main process is 30 kilowatts, operating temperature is 140 °, aoxidizes solution Volume is 400 liters, and processing workpiece weight average is 300 kilograms/every frame, then, under oxidation solution heated condition the most per hour Water evaporation quantity about 8 liters, stops evaporation overnight about 10 liters after heating.It addition, after the solution in accumulator tank 702 is owing to absorbing oxidation The heat of workpiece, its evaporation capacity about 5～10 liters of water every day.Assume process and the about 40～60 minutes oil removing time of every frame workpiece, The spray flux that every frame workpiece then performs last spray (employing tap water) should be less than 6～8 liters of water, and therefore, the present invention adopts The globule that ejects can be made tiny with booster pump and impulsive force is strong, displacement is 1.5 liters per minute, enough every frame workpiece cleaning 3 ～5 minutes.

S816, oil sealing: iron and steel parts is put into emulsifying oil groove 710 and carries out oil sealing process.

Wherein, above-mentioned steps (1)～step (9) are oxidation pretreatment process, and step (10)～(11) are for aoxidizing main process Process, step (12)～step (16) are oxidative work-up procedure.In above-mentioned steps, the spray (bag of described oxidation pre-treatment Include for the first time spray, second time spray and third time spray) and oxidative work-up in first time spray and pass through soaker The sewage discharged after embathing all forms primary cycle sewage after filtration treatment, and described primary cycle effluent cycle is used in institute State the spray in oxidation pre-treatment (include spraying for the first time, second time spray and third time spray) and embathe and (include accumulator tank Embathe and embathe with lead-over groove) and described oxidative work-up in first time spray the 4th time of the most whole technique (spray)；Institute The all sprays (including the 5th spray and the 6th spray) stated in oxidative work-up in addition to described first time sprays are discharged Sewage forms secondary cycle sewage after neutralisation treatment, and described secondary cycle effluent cycle is used in described oxidative work-up Except remaining spray (the 5th spray of the most whole technique) for the first time and in addition to last spray and embathe and (embathe drill traverse Wash).

In whole oxidation processing technique, by using primary cycle sewage and secondary cycle sewage, and by controlling certainly The injection rate of water is equal to the moisture of evaporation in oxidizing process, thus greatly reduces the use of tap water and realize sewage zero Discharge, reaches energy-saving and emission-reduction purpose truly.

The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art For, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications are also considered as Protection scope of the present invention.

Claims

1. realize an iron and steel parts oxidation processing technique for sewage zero-discharge, including oxidation pre-treatment, aoxidize main process and oxygen Change post processing, it is characterised in that in addition to the last spray of described oxidative work-up uses tap water to carry out, described oxidation Remaining spray of pre-treatment and oxidative work-up and embathe and water that the main process of described oxidation is used is all from described oxidation Discharge and sewage after treatment in pre-treatment and oxidative work-up；And control the last spray of described oxidative work-up Tap water consumption equal to the water evaporation quantity in the main process of described oxidation.

Realize the iron and steel parts oxidation processing technique of sewage zero-discharge the most as claimed in claim 1, it is characterised in that described oxygen Change the spray of pre-treatment and that discharged and after filtration treatment the sewage that embathes of oxidative work-up be primary cycle sewage, That the spray of described oxidative work-up is discharged and after neutralisation treatment sewage is secondary cycle sewage；

In described oxidative work-up, remaining in addition to last spray sprays and embathes used water and be all from described two grades Circulating sewage.

Realize the iron and steel parts oxidation processing technique of sewage zero-discharge the most as claimed in claim 1, it is characterised in that described oxygen First time in the spray of change pre-treatment and oxidative work-up sprays and embathes that discharged and after filtration treatment sewage For primary cycle sewage, in described oxidative work-up all sprays in addition to described first time sprays discharged and through neutralizing Sewage after process is secondary cycle sewage；

The water that first time spray in described oxidative work-up is used is from described primary cycle sewage, described oxidative work-up In except remaining spray for the first time and in addition to last spray with embathe used water and be all from described secondary cycle sewage.

4. realize an iron and steel parts oxidization processing system for sewage zero-discharge, including oxidation pretreating device, aoxidize main process Device and oxidative work-up device, it is characterised in that except the last spray of described oxidative work-up device uses tap water Outside carrying out, described oxidation pretreating device and oxidative work-up device perform remaining spray and embathe and the main place of described oxidation The water that reason device is used is all from described oxidation pretreating device and oxidative work-up device discharge and through sewage disposal Sewage after device process；Control described oxidative work-up device and implement the tap water consumption of last spray equal to described oxygen Change the water evaporation quantity in primary processing unit.

Realize the iron and steel parts oxidization processing system of sewage zero-discharge the most as claimed in claim 4, it is characterised in that described dirt Water treatment facilities includes filtration treatment device and neutralisation treatment device, after described oxidation pretreating device performs spray and oxidation It is primary cycle sewage that processing means performs to embathe that discharged and after filtration treatment device sewage, locates after described oxidation It is secondary cycle sewage that reason device performs that spray is discharged and after neutralisation treatment device sewage；

Realize the iron and steel parts oxidization processing system of sewage zero-discharge the most as claimed in claim 4, it is characterised in that described dirt Water treatment facilities includes filtration treatment device and neutralisation treatment device, after described oxidation pretreating device performs spray and oxidation It is primary cycle sewage that processing means performs to spray and embathe that discharged and after filtration treatment device sewage for the first time, In described oxidative work-up device except perform described first time spray in addition to all sprays discharged and through neutralisation treatment fill The sewage postponed is secondary cycle sewage；

Described oxidative work-up device performs to spray the water used for the first time from described primary cycle sewage, after described oxidation Processing means execution is all from described two grades except remaining for the first time and in addition to last spray sprays and embathe used water Circulating sewage.

7. the iron and steel parts oxidation processing technique realizing sewage zero-discharge, it is characterised in that include step:

S5, iron and steel parts is put into lead-over groove embathe；

S7, iron and steel parts is put into lead-over groove embathe；

S9, iron and steel parts is put in accumulator tank and embathes；

S10, iron and steel parts is put in heated oxide groove and aoxidize；

S12, the iron and steel parts after cooling is put into soaker embathes；

Iron and steel parts is sprayed by S14, employing tap water；

S15, iron and steel parts is carried out oil sealing process；

Wherein, above-mentioned steps S1～step S9 are the main processing procedure of oxidation, step for oxidation pretreatment process, step S10～S11 S12～step S15 are oxidative work-up procedure；Spray in described oxidation pretreatment process and being discharged by described soaker Sewage after filtration treatment, form described primary cycle sewage；The sewage that spray in described oxidative work-up procedure is discharged Described secondary cycle sewage is formed after neutralisation treatment；

Water in described accumulator tank and lead-over groove is from described primary cycle sewage；The water of described heated oxide groove is from described time Receive groove；Water in described soaker is from described secondary cycle sewage；

By the tap water consumption in rate-determining steps S14 so that it is with the water evaporation quantity phase in described heated oxide groove, accumulator tank Deng.

A kind of iron and steel parts oxidation processing technique realizing sewage zero-discharge, it is characterised in that institute State lead-over groove and include First Transition groove and the second lead-over groove, the water in described First Transition groove from described primary cycle sewage, Water in described second lead-over groove is from described First Transition groove；

A kind of iron and steel parts oxidation processing technique realizing sewage zero-discharge, it is characterised in that Between described step S11 and step S13, further comprise the steps of:

Use the sewage in primary cycle cesspool that the iron and steel parts after cooling is sprayed, and the sewage warp discharged after spray Described primary cycle sewage is formed after crossing filtration treatment.

10. the iron and steel parts oxidization processing system realizing sewage zero-discharge, it is characterised in that include heated oxide groove, return Receive groove, the first spray district, lead-over groove, pickling tube, soaker, the second spray district, emulsifying oil groove, sedimentation tank, primary cycle sewage Pond and secondary cycle cesspool, wherein:

Described heated oxide groove is used for heated oxide and oil removing, and the iron and steel parts taken out from described heated oxide groove all first passes through Accumulator tank embathes, and the iron and steel parts after before putting into pickling tube or taking out from pickling tube all first passes through lead-over groove and embathes, described First spray district spray before iron and steel parts aoxidizes, described second spray district spray after iron and steel parts aoxidizes, institute State soaker embathing after iron and steel parts aoxidizes；

Described first spray district, soaker flows into described primary cycle after sewage being discharged to sedimentation tank filter by sewage pipe Cesspool；Primary cycle sewage in described primary cycle cesspool can pump out and add to described recovery by pump and water pipe Groove, lead-over groove and the spray as described first spray district use；

The sewage that described second spray district discharges flows in secondary cycle cesspool and is neutralized process, described secondary cycle sewage Secondary cycle sewage in pond can pump out and add to described soaker and as described second spray district by pump and water pipe Spray use；Described second spray district is also associated with running water pipe to spray use for the last time；

By controlling the displacement of described running water pipe so that it is with the water evaporation quantity phase in described heated oxide groove, accumulator tank Deng.