CN106065473B

CN106065473B - Realize the iron and steel parts oxidation processing technique and system of sewage zero-discharge

Info

Publication number: CN106065473B
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: 2019-03-26
Anticipated expiration: 2036-07-06
Also published as: CN106065473A

Abstract

The invention discloses a kind of iron and steel parts oxidation processing techniques for realizing sewage zero-discharge, including oxidation pre-treatment, oxidation main process task and oxidative work-up, wherein, except the oxidative work-up last time spray using tap water carry out in addition to, it is described oxidation pre-treatment and oxidative work-up remaining spray and embathe and the oxidation main process task used in water be all from the oxidation pre-treatment and oxidative work-up discharge and sewage after treatment；And the originally water consumption for controlling the last time spray of the oxidative work-up is equal to the water evaporation quantity in the oxidation main process task.The invention also discloses a kind of iron and steel parts oxidization processing systems for realizing sewage zero-discharge.By applying the present invention, water conservation and sewage zero-discharge can be reached simultaneously, reach energy-saving and emission-reduction purpose truly.

Description

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

Technical field

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

Background technique

Iron and steel parts make the protective oxidation film of its Surface Creation by oxidation processes, and the color of film thickness depends on steel Surface state, the process conditions of alloying component and oxidation processes of workpiece, generally in black or black-and-blue, polished Surface Oxygen After change, bright in color is beautiful, cast steel and siliceous higher special steel oxidation film is brown or dark brown.The thickness of film layer is about 0.6-1.6 μm, therefore, oxidation processes do not influence the precision of part.

Alkaline oxygenated method be under the conditions of higher temperature, containing certain oxidant sodium hydroxide aqueous slkali in into Row, oxidant and sodium hydroxide and metallic iron act on, and generate with magnetic iron oxide (Fe₃O₄) oxidation film as main component.Specifically , steel surface hot alkaline solution and oxidant effect under generate ferrous acid sodium, ferrous acid sodium further with the oxidation in solution Agent reaction generates sodium ferrite, Na₂FeO₂And Na₂Fe₂O₄There are biggish solubility, but the meeting when the two mixes in concentrated base Interaction generates ferroso-ferric oxide Fe₃O₄, Fe₃O₄Solubility is small in the solution, crystallizes out when concentration reaches saturation, first Nucleus, then long great achievement crystal are formed, finally join together complete film.

The alkaline oxygenated treatment process of traditional iron and steel parts mainly includes oxidation pre-treatment, oxidation main process task and oxidation Post-process three process flows, in which:

Aoxidize pre-treatment: for steel after over mechanical processing or heat treatment, often there is greasy dirt and oxide skin in surface, and this The generation of oxidation film is influenced whether a bit.Therefore, it is necessary to carry out oxidation pre-treatment to clear up the surface of iron and steel parts, generally comprises and remove Oil, spray washing, overflow embathe and pickling；

Oxidation main process task: the iron and steel parts through peroxidating pre-treatment are put into the strong base solution for being added to oxidant, It handles 15~90 minutes at a high temperature of 140 ° or so, generates in surface of steel workpiece with Fe₃O₄Oxidation film as main component；

Oxidative work-up: carrying out sufficient spray washing after oxidation processes, overflow is embathed, to remove the alkalinity of workpiece surface Substance；In addition it to improve workpiece corrosion resistance, lubricity and antirust ability, needs to be saponified after oxidation, fill or oil sealing processing.

In the following, traditional iron and steel parts oxidization processing system (assembly line) as shown in connection with fig. 1, to traditional iron and steel parts The process of alkaline oxygenated treatment process be described in detail, specifically comprise the following steps:

(1) it sprays for the first time: spray cleaning 2~3 minutes being carried out to iron and steel parts using tap water, to wash away workpiece surface Dust, iron powder and part greasy dirt；

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

(3) it sprays for second: spray cleaning 2~3 minutes is carried out to the iron and steel parts after oil removal treatment using tap water；

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

(5) first time overflow is embathed: the iron and steel parts after pickling being put into overflow soaker A and are embathed, wherein is overflow Tap water is uninterruptedly injected in stream soaker A；

(6) third time sprays: spray cleaning 2~3 minutes is carried out to the iron and steel parts after embathing using tap water, to rinse Clean workpiece surface remains acid solution；

(7) it aoxidizes: iron and steel parts being put into heated oxide slot and are aoxidized 15~90 minutes, to be generated in surface of steel workpiece With Fe₃O₄Oxidation film as main component；

(8) cooling: the iron and steel parts after oxidation processes being put into accumulator tank (cold water) and enter cooling treatment；

(9) second of overflow are embathed: iron and steel parts after cooling being put into overflow soaker B and are embathed, wherein are overflow Tap water is uninterruptedly injected in stream soaker B；

(10) the 4th sprays: carrying out spray 2~3 minutes to the iron and steel parts after embathing using tap water, dry to clean Net surface of steel workpiece；

(11) oil sealing: iron and steel parts are put into emulsification oil groove and carry out oil sealing processing.

Wherein, above-mentioned steps (1)~step (6) is oxidation pretreatment process, and step (7)~(8) are oxidation main process task mistake Journey, step (9)~step (11) are oxidative work-up procedure.In addition, in above-mentioned oxidation pretreatment process and oxidative work-up mistake Cheng Zhong, the sewage for discharge after overflow is embathed using tap water after four times are sprayed using tap water and twice is (in Fig. 1 Shown in solid arrow direction) it is discharged after treatment tank is handled from sewage draining exit.

As it can be seen that being adopted in the oxidation processing technique of traditional iron and steel parts due to spraying and embathing in step in whole It is handled with tap water, tap water usage amount is huge, causes water resource waste, is unfavorable for saving water.Correspondingly, using certainly Quantity of wastewater effluent after water carries out whole sprays and embathes is big, and certain pollution is caused to environment.

Therefore, the oxidation technology of the new iron and steel parts of anxious one kind to be developed, can reach simultaneously save water 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 that providing a kind of iron and steel parts oxidation processing technique for realizing sewage zero-discharge and being System, can reach water conservation and sewage zero-discharge simultaneously, reach energy-saving and emission-reduction purpose truly.

The embodiment of the invention provides before a kind of iron and steel parts oxidation processing technique for realizing sewage zero-discharge, including oxidation Processing, oxidation main process task and oxidative work-up, in addition to the last time of oxidative work-up spray is carried out using tap water, It is described oxidation pre-treatment and oxidative work-up remaining spray and embathe and the oxidation main process task used in water be all from Discharge and sewage after treatment in the oxidation pre-treatment and oxidative work-up；And control the last of the oxidative work-up The originally water consumption once sprayed is equal to the water evaporation quantity in the oxidation main process task.

As an improvement of the above scheme, it is described oxidation pre-treatment spray and oxidative work-up embathe it is being discharged and pass through Sewage after crossing filtration treatment is primary cycle sewage, that the spray of the oxidative work-up is discharged and after neutralisation treatment Sewage be secondary cycle sewage；

Spray in the oxidation pre-treatment and water used in embathing are all from the primary cycle sewage；

Remaining spray in the oxidative work-up in addition to last time sprays and water used in embathing are all from described Secondary cycle sewage.

As an improvement of the above scheme, the first time spray in the spray and oxidative work-up of the oxidation pre-treatment and leaching Washing sewage be discharged and after filtration treatment is primary cycle sewage, and first time spray is removed in the oxidative work-up Sewage that all sprays outside leaching are discharged and after neutralisation treatment is secondary cycle sewage；

First time in the oxidative work-up sprays used water and comes from the primary cycle sewage, after the oxidation The water used in spraying and embathing with remaining in addition to last time spray for the first time is all from the secondary cycle dirt in processing Water.

As an improvement of the above scheme, it when the oxidation pre-treatment carries out pickling to iron and steel parts using hydrochloric acid, also wraps Include the processing that chloride ion is removed to the primary cycle sewage.

It as an improvement of the above scheme, further include the processing that carbanion is carried out to the primary cycle sewage.

The embodiment of the invention provides before a kind of iron and steel parts oxidization processing system for realizing sewage zero-discharge, including oxidation Processing unit, oxidation primary processing unit and oxidative work-up device, except the last time spray of the oxidative work-up device is adopted Except being carried out with tap water, the oxidation pretreating device and oxidative work-up device execute remaining spray and embathe and described Water used in oxidation primary processing unit, which is all from the oxidation pretreating device and oxidative work-up device, to be discharged and passes through Sewage-treatment plant treated sewage；Control the originally water consumption etc. that the oxidative work-up device implements last time spray Water evaporation quantity in the oxidation primary processing unit.

As an improvement of the above scheme, the sewage-treatment plant includes filtration treatment device and neutralisation treatment device, The oxidation pretreating device executes spray and the execution of oxidative work-up device embathes being discharged and passes through filtration treatment device Sewage afterwards is primary cycle sewage, and the oxidative work-up device executes that spray is discharged and after neutralisation treatment device Sewage be secondary cycle sewage；

The oxidation pretreating device, which executes spray and embathes used water, is all from the primary cycle sewage；

Remaining spray in the oxidative work-up in addition to executing last time and spraying and water used in embathing are all from The secondary cycle sewage.

As an improvement of the above scheme, the sewage-treatment plant includes filtration treatment device and neutralisation treatment device, The oxidation pretreating device executes spray and oxidative work-up device executes and sprays and embathe for the first time being discharged and pass through Sewage after filtration treatment device is primary cycle sewage, in the oxidative work-up device in addition to executing the first time spray All sprays be discharged and sewage after neutralisation treatment device be secondary cycle sewage；

The oxidative work-up device executes sprays used water from the primary cycle sewage, the oxygen for the first time Described in change after-treatment device execution water used in spraying and embathing with remaining in addition to last time spray for the first time is all from Secondary cycle sewage.

As an improvement of the above scheme, when the oxidation pretreating device carries out pickling to iron and steel parts using hydrochloric acid, The system also includes the devices that chloride ion processing is removed to the primary cycle sewage.

As an improvement of the above scheme, the system also includes carry out at carbanion to the primary cycle sewage The device of reason.

The embodiment of the invention provides a kind of iron and steel parts oxidation processing techniques for realizing sewage zero-discharge, comprising steps of

S1, iron and steel parts are sprayed using the sewage in primary cycle cesspool；

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

S3, the iron and steel parts after oil removal treatment are put into accumulator tank and are embathed；

S4, the iron and steel parts after embathing are sprayed using the sewage in primary cycle cesspool；

S5, iron and steel parts are put into lead-over groove and are embathed；

S6, pickling will be carried out in iron and steel parts immersion descaling bath；

S7, iron and steel parts are put into lead-over groove and are embathed；

S8, the iron and steel parts after embathing are sprayed using the sewage in primary cycle cesspool；

S9, iron and steel parts are put into accumulator tank and are embathed；

S10, it iron and steel parts is put into heated oxide slot aoxidizes；

S11, it the iron and steel parts after oxidation processes is put into accumulator tank cools down；

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

S13, iron and steel parts are sprayed using the sewage in secondary cycle cesspool；

S14, iron and steel parts are sprayed using tap water；

S15, iron and steel parts are subjected to oil sealing processing；

Wherein, above-mentioned steps S1~step S9 is oxidation pretreatment process, and step S10~S11 is oxidation main process task process, Step S12~step S15 is oxidative work-up procedure；Spray in the oxidation pretreatment process and pass through the soaker The sewage of discharge forms the primary cycle sewage after filtration treatment；What the spray in the oxidative work-up procedure was discharged Sewage forms the secondary cycle sewage after neutralisation treatment；

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

By the originally water consumption in rate-determining steps S14, evaporate it with the moisture in the heated oxide slot, accumulator tank It measures equal.

As an improvement of the above scheme, the lead-over groove includes First Transition slot and the second lead-over groove, the First Transition Water in slot comes from the primary cycle sewage, and the water in second lead-over groove comes from the First Transition slot；

The step S5 specifically: successively iron and steel parts are put into First Transition slot and the second lead-over groove and are embathed；

The step S7 specifically: successively iron and steel parts are put into the second lead-over groove and First Transition slot and are embathed.

As an improvement of the above scheme, it between the step S11 and step S13, further comprises the steps of:

The dirt that iron and steel parts after cooling are sprayed using the sewage in primary cycle cesspool, and are discharged after spraying Water forms the primary cycle sewage after filtration treatment.

As an improvement of the above scheme, when using hydrochloric acid to carry out pickling to iron and steel parts in the step S6, the side Method further includes that the processing step of chloride ion is removed to the primary cycle sewage.

The embodiment of the invention provides a kind of iron and steel parts oxidization processing systems for realizing sewage zero-discharge, including heating oxygen Change slot, accumulator tank, the first spraying zone, lead-over groove, pickling tube, soaker, the second spraying zone, emulsification oil groove, sedimentation basin, level-one to follow Environmental pollution pond and secondary cycle cesspool, in which:

The heated oxide slot is used for heated oxide and oil removing, and the iron and steel parts taken out from the heated oxide slot are first It is embathed by accumulator tank, and is put into before pickling tube or first passes through lead-over groove from the iron and steel parts after taking-up in pickling tube and embathe, First spraying zone is for the spray before iron and steel parts oxidation, and second spraying zone is for the spray after iron and steel parts oxidation Leaching, the soaker is for embathing after iron and steel parts oxidation；

Sewage is discharged to after sedimentation tank filter by first spraying zone, soaker by sewage pipe flows into the level-one Circulating sewage pond；Primary cycle sewage in the primary cycle cesspool can be pumped out by pump and water pipe and add to described return Slot, lead-over groove and the spray as first spraying zone is received to use；

The sewage of the second spraying zone discharge, which flows into secondary cycle cesspool, to be neutralized, the secondary cycle Secondary cycle sewage in cesspool can be pumped out and be added to the soaker by pump and water pipe and as second spray The spray for drenching area uses；Second spraying zone is also connected with running water pipe to carry out last time and spray use；

The water of the heated oxide slot comes from the accumulator tank；

By controlling the displacement of the running water pipe, evaporate it with the moisture in the heated oxide slot, accumulator tank It measures equal.

Iron and steel parts before being put into pickling tube progress pickling successively pass through First Transition slot and the second lead-over groove embathes；From acid Iron and steel parts after taking out in wash pool successively pass through to be embathed in the second lead-over groove and First Transition slot.

As an improvement of the above scheme, the descaling bath is dilute hydrochloric acid slot, in the primary cycle cesspool investment chlorine from Sub- remover.

Compared with prior art, the iron and steel parts oxidation processing technique disclosed by the invention for realizing sewage zero-discharge is by removing Except the last time spray of the oxidative work-up is carried out using tap water, pre-treatment and remaining spray of oxidative work-up are aoxidized Drench and embathe and the oxidation main process task used in water be all from the oxidation pre-treatment and oxidative work-up discharge and Recycling sewage after treatment；And the originally water consumption etc. of the spray of the last time by controlling the oxidative work-up Water evaporation quantity in the oxidation main process task reaches true so as to reach water conservation and sewage zero-discharge simultaneously Energy-saving and emission-reduction purpose in positive meaning.

Detailed description of the invention

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

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

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

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

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

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

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

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

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

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

Embodiment 1

It referring to fig. 2, is a kind of iron and steel parts oxidization processing system for realizing sewage zero-discharge provided in an embodiment of the present invention Structural schematic diagram.The iron and steel parts oxidization processing system of the realization sewage zero-discharge includes oxidation pretreating device 101, oxidation Primary processing unit 102 and oxidative work-up device 103, wherein the oxidation pretreating device 101 and oxidation primary processing unit The sewage of 102 discharges pass through sewage-treatment plant 104 and carry out sewage treatment, and by sewage-treatment plant 104, that treated is dirty Water money of the water as the oxidation pretreating device 101, oxidative work-up device 103 and the oxidation primary processing unit 102 Source be recycled, the oxidation pretreating device 101, oxidative work-up device 103 using the circulating sewage as spray and Use (in addition to the last time of entire technique spray is using tap water) is embathed, the connection of oxidative work-up device 103 is originally Water pipe is to use tap water to carry out last time spray operation, and wherein tap water usage amount is Q1, and the oxidation main process task fills Set 102 because heating caused by water evaporation quantity be Q2, by control tap water usage amount Q1 be equal to oxidation primary processing unit 102 water evaporation quantity Q2, to realize sewage zero-discharge.

Wherein, sewage-treatment plant 104 is mainly used for filtration treatment, to filter out iron oxide sediment and the dross in sewage (these are mainly derived from oxidation primary processing unit 102, taken out of with iron and steel parts and pass through the spray of oxidative work-up device 103/ It is discharged after embathing through sewage) etc..In addition, in the present embodiment, if oxidation pretreating device 101 is using hydrochloric acid as rust remover pair Iron and steel parts carry out pickling, then the sewage-treatment plant 104 further includes removing chloride processing.Preferably, at the sewage Managing device 104 can also include except carbanion is handled.

Further, the sewage being discharged after sewage-treatment plant 104 is also recycled after neutralizing device 105 Into oxidative work-up device 103, because the sewage for being discharged into sewage-treatment plant 104 is integrally in alkalinity, after improving oxidation Cleaning effect of the processing unit 103 to the alkaline solution of surface of steel workpiece, it is necessary to by the sewage of recycling by neutralizing It is recycled into oxidative work-up device 103 after processing (such as acid is added).

Embodiment 2

It is a kind of iron and steel parts oxidation processing technique for realizing sewage zero-discharge provided in an embodiment of the present invention referring to Fig. 3 Flow diagram.The iron and steel parts oxidation processing technique of the realization sewage zero-discharge of the present embodiment includes oxidation pre-treatment step S201, oxidation main process task step S202 and Oxidative workup S203, wherein execute the oxidation pre-treatment step S201 with The sewage that oxidation main process task step S202 is discharged passes through sewage treatment step S204 and carries out sewage treatment, by sewage treatment Sewage after processing step S204 is as the spray aoxidized in pre-treatment step S201, Oxidative workup S203 and leaching It washes and uses (in addition to the last time of entire technique spray uses tap water) and as the oxidation main process task step S202's Water resource is recycled, and carries out last time spray to iron and steel parts in the Oxidative workup S203 and operates with originally Water carries out, and wherein tap water usage amount is Q1, and water evaporation quantity is Q2 in the oxidation main process task step S202, passes through control The usage amount Q1 of tap water is equal to the water evaporation quantity Q2 of oxidation main process task step S202, to realize sewage zero-discharge.

Wherein, sewage treatment step S204 is substantially carried out filtration treatment, to filter out the iron oxide sediment in sewage and float (these are mainly derived from the oxidation processes in oxidation main process task step S202 to slag, take out of with iron and steel parts and after peroxidating Manage step S203 spray/embathe after be discharged through sewage) etc..In addition, in the present embodiment, if oxidation pre-treatment step S201 is adopted Hydrochloric acid is used to carry out pickling to iron and steel parts as rust remover, then sewage treatment step S204 further includes executing at removing chloride Reason.Preferably, the sewage treatment step S204 can also be performed except carbanion processing.

Further, the sewage being discharged after sewage treatment step S204 also follows after neutralisation treatment step S205 again Ring uses spray in Oxidative workup S203 and embathes, because the sewage after sewage treatment step S204 is whole In alkalinity, in order to improve in Oxidative workup S203 to the cleaning effect of the alkaline solution of surface of steel workpiece, it is necessary to The sewage of recycling is recycled into Oxidative workup S203 after neutralisation treatment (such as acid is added).

Embodiment 3

It referring to fig. 4, is a kind of iron and steel parts oxidization processing system for realizing sewage zero-discharge provided in an embodiment of the present invention Structural schematic diagram.The iron and steel parts oxidization processing system of the realization sewage zero-discharge includes oxidation pretreating device 301, oxidation Primary processing unit 302 and oxidative work-up device 303.Wherein, the oxidation pretreating device 301 sprays iron and steel parts The sewage and oxidative work-up device 303 of discharge are embathed the sewage being discharged afterwards to iron and steel parts and pass through filtration treatment Device 304 is filtered processing, and the sewage after 304 filtration treatment of filtration treatment device forms primary cycle sewage, Water resource circulation of the primary cycle sewage as the oxidation pretreating device 301 and the oxidation primary processing unit 302 It uses, specifically, the oxidation pretreating device 301 as spray and embathes use using the primary cycle sewage.

The sewage that the oxidative work-up device 303 is discharged after spraying to iron and steel parts is by neutralizing device 305 It is neutralized, forms secondary cycle sewage, the secondary cycle sewage by the neutralization device 305 treated sewage Water resource as the oxidative work-up device 303 is recycled, specifically, the oxidative work-up device 303 uses institute Secondary cycle sewage is stated as spray and embathes use (in addition to the last time of entire technique spray is using tap water), the oxygen Change after-treatment device 303 connects running water pipe, and to use tap water progress, spray is operated for the last time, wherein tap water usage amount For Q1, and the oxidation primary processing unit 302 because caused by heating water evaporation quantity be Q2, pass through the use of control tap water The water evaporation quantity Q2 that Q1 is equal to oxidation primary processing unit 302 is measured, to realize sewage zero-discharge.

Wherein, filtration treatment device 304 is mainly used for filtering out iron oxide sediment in sewage and dross (these mainly comes Derived from oxidation primary processing unit 302, takes out of with iron and steel parts and arranged after the embathing of oxidative work-up device 303 through sewage Out) etc..In addition, in the present embodiment, if oxidation pretreating device 301 carries out acid to iron and steel parts as rust remover using hydrochloric acid It washes, then also passing through removing chloride processing unit by the primary cycle sewage of the filtration treatment device 304 carries out chloride ion It is recycled into oxidation pretreating device 301 and oxidation primary processing unit 302 after removal.Preferably, the present embodiment may be used also With setting except carbanion processing unit is handle except carbanion to the primary cycle sewage.

In the present embodiment, because the sewage that oxidative work-up device 303 is discharged is in alkalinity, in order to improve oxidative work-up Cleaning effect of the device 303 to the alkaline solution of surface of steel workpiece, it is necessary to which the sewage of recycling is passed through into neutralisation treatment It is recycled into oxidative work-up device 303 after (such as acid is added).

Embodiment 4

It is a kind of iron and steel parts oxidation processing technique for realizing sewage zero-discharge provided in an embodiment of the present invention referring to Fig. 5 Flow diagram.The iron and steel parts oxidation processing technique of the realization sewage zero-discharge of the present embodiment includes oxidation pre-treatment step S401, oxidation main process task step S402 and Oxidative workup S403.Wherein, it executes in the oxidation pre-treatment step S401 The spray sewage and Oxidative workup S403 that are discharged in the sewage being discharged afterwards that embathes pass through filtration treatment Step S404 is filtered processing, the sewage formation primary cycle sewage after the filtration treatment step S404, and described one Grade circulating sewage is recycled as the water resource of the oxidation main process task step S402 and walks as the oxidation pre-treatment Spray in rapid S401 and embathe use.

The sewage being discharged after the spray in the Oxidative workup S403 is executed by neutralisation treatment step S405 It is neutralized, the sewage after the neutralisation treatment step S405 forms secondary cycle sewage, and the secondary cycle is dirty Water as the Oxidative workup S403 spray and embathe use (except the last time spray of entire technique is using originally Outside water), last time spray carried out to iron and steel parts in the Oxidative workup S403 operate with tap water to carry out, Middle tap water usage amount is Q1, and water evaporation quantity is Q2 in the oxidation main process task step S402, passes through control tap water Usage amount Q1 is equal to the water evaporation quantity Q2 of oxidation main process task step S402, to realize sewage zero-discharge.

Wherein, filtration treatment step S404 is mainly used for filtering out iron oxide sediment in sewage and dross (these is main Oxidation processes in oxidation main process task step S402, take out of with iron and steel parts and pass through Oxidative workup S403's It is discharged after embathing through sewage).In addition, in the present embodiment, if oxidation pre-treatment step S401 is using hydrochloric acid as rust remover pair Iron and steel parts carry out pickling, and the present embodiment further preferably includes that removing chloride processing is executed to primary cycle sewage.Preferably, this reality Applying example further includes being executed to primary cycle sewage except carbanion is handled.

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

Embodiment 5

It is a kind of iron and steel parts oxidization processing system for realizing sewage zero-discharge provided in an embodiment of the present invention referring to Fig. 6 Structural schematic diagram.The iron and steel parts oxidization processing system of the realization sewage zero-discharge includes oxidation pretreating device 501, oxidation Primary processing unit 502 and oxidative work-up device 503.Wherein, the oxidation pretreating device 501 sprays iron and steel parts The sewage and oxidative work-up device 503 of discharge carry out first time spray to iron and steel parts, and (attention is in oxidative work-up Spray for the first time) and embathe the sewage being discharged afterwards and pass through filtration treatment device 504 and be filtered processing, by the filtering Sewage after 504 filtration treatment of processing unit forms primary cycle sewage, before the primary cycle sewage is as the oxidation The water resource for managing device 501, the oxidation primary processing unit 502 and oxidative work-up device 503 is recycled, specifically, The oxidation pretreating device 301 as spray and embathes use using the primary cycle sewage, the oxidative work-up dress 503 are set to use using the primary cycle sewage as first time spray.

The oxidative work-up device 503 is sprayed the sewage being discharged afterwards (in addition to first time sprays) to iron and steel parts It is neutralized by neutralizing device 505, by the neutralizations device 505 treated sewage formation secondary cycle sewage, The secondary cycle sewage is recycled as the water resource of the oxidative work-up device 303, specifically, after the oxidation Managing device 503 uses the secondary cycle sewage to use as except remaining for the first time and in addition to last time spray is sprayed and embathed (last time spray uses outside tap water), the oxidative work-up device 503 connects running water pipe to use tap water to carry out Last time spray operation, wherein tap water usage amount is Q1, and the oxidation primary processing unit 502 is because of water caused by heating Dividing evaporation capacity is Q2, and the usage amount Q1 by controlling tap water is equal to the water evaporation quantity Q2 of oxidation primary processing unit 502, thus Realize sewage zero-discharge.

Wherein, filtration treatment device 504 is mainly used for filtering out iron oxide sediment in sewage and dross (these mainly comes Derived from oxidation primary processing unit 502, is taken out of with iron and steel parts and the first time for passing through oxidative work-up device 503 sprays/embathes It is discharged by sewage) etc..In addition, in the present embodiment, if oxidation pretreating device 501 uses hydrochloric acid as rust remover to steel Workpiece carries out pickling, then the primary cycle sewage by the filtration treatment device 504 also passes through removing chloride processing unit It is recycled to after aoxidizing pretreating device 501, the oxidation primary processing unit 502 and oxidation after progress chloride ion removal In processing unit 503.Preferably, the present embodiment can also be arranged except carbanion processing unit is with dirty to the primary cycle Water handle except carbanion.

In the present embodiment, because the sewage that oxidative work-up device 503 is discharged is in alkalinity, in order to improve oxidative work-up Cleaning effect of the device 503 to the alkaline solution of surface of steel workpiece, it is necessary to which the sewage of recycling is passed through into neutralisation treatment It is recycled into oxidative work-up device 503 after (such as acid is added).

Embodiment 6

It is a kind of iron and steel parts oxidation processing technique for realizing sewage zero-discharge provided in an embodiment of the present invention referring to Fig. 7 Flow diagram.The iron and steel parts oxidation processing technique of the realization sewage zero-discharge of the present embodiment includes oxidation pre-treatment step S601, oxidation main process task step S602 and Oxidative workup S603.Wherein, it executes in the oxidation pre-treatment step S601 The spray sewage and Oxidative workup S603 that are discharged in first time spray and embathe the sewage being discharged afterwards It is filtered processing by filtration treatment step S604, the sewage after the filtration treatment step S604 forms level-one and follows Environmental pollution water, the primary cycle sewage are recycled, as the water resource of the oxidation main process task step S602 as the oxygen Change the spray in pre-treatment step S601 and embathe and uses and make as the first time spray in Oxidative workup S603 With.

The sewage that the spray (in addition to first time sprays) in the Oxidative workup S603 is discharged afterwards is executed to pass through Neutralisation treatment step S605 is neutralized, and it is dirty that the sewage after the neutralisation treatment step S605 forms secondary cycle Water, the secondary cycle sewage is as the Oxidative workup S603 except remaining for the first time and in addition to last time spray Spray and embathe use (last time spray using tap water outside), in the Oxidative workup S603 to iron and steel parts into Row last time spray operates with tap water progress, and wherein tap water usage amount is Q1, and the oxidation main process task step Water evaporation quantity is Q2 in S602, and the moisture that the usage amount Q1 by controlling tap water is equal to oxidation main process task step S602 evaporates Q2 is measured, to realize sewage zero-discharge.

Wherein, filtration treatment step S604 is mainly used for filtering out iron oxide sediment in sewage and dross (these is main Oxidation processes in oxidation main process task step S602, take out of with iron and steel parts and pass through Oxidative workup S603's It is discharged after spraying/embathe for the first time through sewage).In addition, in the present embodiment, if oxidation pre-treatment step S601 is made using hydrochloric acid Pickling is carried out to iron and steel parts for rust remover, the present embodiment further preferably includes that removing chloride processing is executed to primary cycle sewage. Preferably, the present embodiment further includes being executed to primary cycle sewage except carbanion is handled.

In the present embodiment, in order to improve in Oxidative workup S603 to the clear of the alkaline solution of surface of steel workpiece Wash effect, it is necessary to which the sewage (in alkalinity) of recycling is recycled to oxygen after neutralisation treatment (such as acid is added) 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 for realizing sewage zero-discharge Line), the iron and steel parts oxidization processing system of the realization sewage zero-discharge includes heated oxide slot 701, the spray of accumulator tank 702, first Drench area 703, First Transition slot 704, the second lead-over groove 705, dilute hydrochloric acid pond 706, the first soaker 707, the second soaker 708, Second spraying zone 709, emulsification oil groove 710, sedimentation basin 711, primary cycle cesspool 712 and secondary cycle cesspool 713, In:

First spraying zone 703, the first soaker 707 and the second soaker 708 are arranged sewage by sewage pipe Sedimentation basin 711 is arrived out, and sedimentation basin 711 is connect with primary cycle cesspool 712 by strainer, and the sewage in sedimentation basin 711 passes through It is flowed into primary cycle cesspool 712 after the filtering of strainer.Wherein, the dirt of first soaker 707, the second soaker 708 Water outlet has valve switch, and the opening and closing of outfall are controlled by valve switch.

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

Sewage is discharged to secondary cycle cesspool 713 by sewage pipe and carried out at neutralization by second spraying zone 709 Reason, due to the sewage band alkalinity of second spraying zone 709 discharge, it is therefore desirable to be added toward the secondary cycle cesspool 713 Acid is to neutralize.Sewage in the secondary cycle cesspool 713 is secondary cycle sewage, in the secondary cycle cesspool 713 Secondary cycle sewage can by pump and water pipe pump out and add to first soaker 707, the second soaker 708 and make It is operated with for the spray (except the last time spray of entire oxidation processes) of second spraying zone 709.Second spray Area 709 is also connected with running water pipe, and the running water pipe is equipped with booster pump, and tap water is formed by the effect of the booster pump The spray (last time of entire oxidation processes sprays) that second spraying zone 709 is re-used as after pressurized water operates with.

Oxidation solution in the heated oxide slot 701 is the sodium hydroxide aqueous slkali containing certain oxidant, due to adding Hot temperature is at 140 ° or so, solution in the heated oxide slot 701 average water evaporation quantity about 8 per hour in a heated state It rises, stops after heating about 10 liters of water evaporation quantity overnight.And accumulator tank 702 is mainly used for: by iron and steel parts from heated oxide slot It takes out to be immediately placed in accumulator tank 702 in 701 and embathes cooling, therefore the solution in accumulator tank 702 is due to absorbing iron and steel parts oxygen Heat after change, water evaporation quantity about 5~10 liters of water daily.

In the present embodiment, the heated oxide slot 701 is also used to oil removing other than being used as oxidation processes.Due to heating Oxidation solution alkaline (dense, about 600 grams~800 grams per liters) in oxidation trough, dirt-removing power is extremely strong, directly by steel Ironworker's part, which is put into heated oxide slot, carries out oil removal treatment, can effectively remove the greasy dirt of surface of steel workpiece, and be not necessarily to volume Outer setting degreasing tank reduces equipment cost.Due to the use of the first time spray before 701 oil removing of heated oxide slot being using level-one Sewage in circulating sewage pond 712 carries out cleaning and preliminary oil removing to iron and steel parts, due to the dirt in primary cycle cesspool 712 Alkaline relatively strong (pH value is 13 or more), and Surfactant OP -10 is periodically added in primary cycle cesspool 712, because Sewage in this primary cycle cesspool 712 has stronger oil removing ability, can tentatively remove the greasy dirt of surface of steel workpiece, To make the greasy dirt in heated oxide slot 701 will not be too many.

Wherein, the primary cycle sewage in primary cycle cesspool 712 described in the water source in accumulator tank 702, and heat Water source accumulator tank 702 in oxidation trough 701.It, can be taking human as from accumulator tank when the water deficient in heated oxide slot 701 Suitable solution is taken to add in heated oxide slot 701 in 702.It is of course also possible to pass through the water pipe for having controllable check valve Heated oxide slot 701 and accumulator tank 702 are connected, by controlling the ON/OFF of one-way cock to control the solution in accumulator tank 702 Automatically flow into heated oxide slot 701 and control the solution volume of inflow.Due to the water source accumulator tank in heated oxide slot 701 702, and the sodium hydroxide of certain oxidant is had in the solution in accumulator tank 702, therefore, with past heating oxygen in the prior art Change slot 701 plus tap water is compared, the present invention can effectively reduce the oxidant cost in oxidation solution.

Primary cycle sewage of the water in the primary cycle cesspool 712 in the First Transition slot 704, it is described Water in second lead-over groove 705 comes from the First Transition slot 704.It, can be with people when the water deficient in the second lead-over groove 705 For from taking suitable solution to add in the second lead-over groove 705 in First Transition slot 704.It is of course also possible to by with controllable The water pipe of one-way cock connects First Transition slot 704 and the second lead-over groove 705, by controlling the ON/OFF of one-way cock to control Solution in First Transition slot 704 processed automatically flows into the second lead-over groove 705 and controls the solution volume of inflow.Due to steel work Part is successively put after First Transition slot 704, the second lead-over groove 705 again after taking out from the alkaline solution of heated oxide slot 701 Enter dilute hydrochloric acid pond 706 and carries out pickling, and iron and steel parts successively pass through the second transition after the taking-up of the acid solution in dilute hydrochloric acid pond 706 It carries out the operation such as aoxidizing again after slot 705, First Transition slot 704, therefore the solution in First Transition slot 704 is than the second lead-over groove The pH value of 705 solution is big, and the pH value of the solution in First Transition slot 704 is 5~8, the PH of the solution of the second lead-over groove 705 Value is 2~4.First Transition slot 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 quality that iron and steel parts bring alkaline solution influences pickling；In addition, also can preferably reduce iron and steel parts from dilute salt Sour pond 706 is taken out causes acid solution to be discharged in primary cycle cesspool 712 as directly sprayed, to make primary cycle cesspool Primary cycle sewage in 712 keep pH value 13 or more (certainly, too due to the oxidation solution concentration in heated oxide slot 701 Height, the acidity that iron and steel parts are brought out through overpickling are insignificant relative to the basicity brought out by heated oxide slot).

In addition, the primary cycle is dirty since the present embodiment uses hydrochloric acid to carry out pickling to iron and steel parts as rust remover It needs to be added the processing that chloride ion remover carries out removing chloride to primary cycle sewage in pond 712, gets rid of in sewage The strong oxidizing property of chlorine residue, so that the strong oxidizing property bring harm of chlorine residue is eliminated, because chloride ion can excessively enable heated oxide slot In the poisoning of oxidation solution (the water source in the oxidation solution of heated oxide slot 701 comes from accumulator tank 702, and in accumulator tank 702 Water source come from primary cycle cesspool 712).But in embodiment, derusts according to other acid, such as use phosphoric acid The mixed acid of adding citric acid carries out pickling, then without the processing to primary cycle sewage progress removing chloride.

As the preferred embodiment of the technical program, further, carbonate is added in the primary cycle cesspool 712 Ion remaval agent (for example, calcium nitrate) is to carry out the processing of carbanion.Because as the oxidation in heated oxide slot is molten The extension of liquid validity period can be accumulated gradually in solution since the carbon dioxide in air can be reacted with the sodium hydroxide in solution Sodium carbonate can generate harm to the quality of film layer, in order to not influence Fe when sodium carbonate runs up to certain depth₃O₄The matter of film layer Amount, needs that calcium nitrate is added into primary cycle cesspool 712, reacts calcium nitrate and sodium carbonate and generates 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 slot 701 In, rather than in primary cycle cesspool 712, also available same effect.

In addition, in the present embodiment, first soaker 707, the second soaker 708 bottom be uniformly injected into compression Air, to greatly enhance the cleaning ability of soaker, to can thoroughly be cleaned for last time using a small amount of originally water spray Completely provide guarantee.

It should be noted that can directly salvage for the upper layer oil slick in heated oxide slot 701 and be collected into waste oil slot (figure Do not show).And the precipitating waste residue main component deposited in sedimentation basin by filtering is iron oxide red, can be used as pigment recycling purification again With.

The iron and steel parts oxidization processing system of the realization sewage zero-discharge of the present embodiment is by by the first spraying zone 703, the One soaker 707 and the sewage of the second soaker 708 discharge are made by forming primary cycle sewage after filtration treatment, and recycling It is operated with for accumulator tank 702, First Transition slot 704 and spray as first spraying zone 703, and by the second spray Drench sewage pipe that area 709 is discharged by forming secondary cycle sewage after neutralisation treatment, and be recycled in the first soaker 707, Second soaker 708 and as second spraying zone 709 spray (except entire oxidation processes last time spray use Tap water) it operates with, and control the originally water consumption and heated oxide slot of the last time spray of entire oxidation processes 701, the moisture evaporated in accumulator tank 702 is of substantially equal, to greatly reduce the use of tap water and realize sewage zero-emission It puts, reaches energy-saving and emission-reduction purpose truly.

Embodiment 8

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

S801, it sprays for the first time: spray cleaning 2 is carried out to iron and steel parts using the sewage in primary cycle cesspool 712 ~3 minutes (being carried out in the first spraying zone 703), to wash away the dust, iron powder and part greasy dirt of workpiece surface；

It should be noted that the sewage in the primary cycle cesspool 712 is known as primary cycle sewage, the oxygen is come from Change the spray of pre-treatment and the first time spray of oxidative work-up and embathes the filter screen that sewage be discharged passes through sedimentation basin 711 It is flowed into primary cycle cesspool after filtering.

Since the primary cycle sewage is in alkalinity, first time spray is carried out using primary cycle sewage, is deoiled Effect is got well than tap water.

In addition, if the acid cleaning process of oxidation pre-treatment carries out pickling to iron and steel parts as rust remover using hydrochloric acid, then, It needs to be added the processing that chloride ion remover carries out removing chloride to primary cycle sewage into the primary cycle cesspool, goes The strong oxidizing property of the chlorine residue in sewage is removed, so that the strong oxidizing property bring harm of chlorine residue is eliminated, because of the excessive meeting of chloride ion Enabling the oxidation solution in heated oxide slot 712 be poisoned, (the water source in the oxidation solution of heated oxide slot is returned from accumulator tank The water source received in slot comes from primary cycle cesspool).But if the acid cleaning process of oxidation pre-treatment is derusted using other acid, Pickling is such as carried out using the mixed acid of phosphoric acid adding citric acid, then without the processing to primary cycle sewage progress removing chloride.

As the preferred embodiment of the technical program, further, carbonic acid is added into the primary cycle cesspool 712 Radical ion remover (for example, calcium nitrate) is to carry out the processing of carbanion.Because with the oxidation in heated oxide slot The extension of solution validity period can be accumulated gradually in solution since the carbon dioxide in air can be reacted with the sodium hydroxide in solution Tired sodium carbonate can generate harm to the quality of film layer, in order to not influence Fe when sodium carbonate runs up to certain depth₃O₄Film layer Quality needs that calcium nitrate is added into primary cycle cesspool, reacts calcium nitrate and sodium carbonate and generates precipitation of calcium carbonate, thus Remove carbanion.

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

Wherein, the oxidation solution in heated oxide slot 701 is the sodium hydroxide aqueous slkali containing certain oxidant.Due to adding Oxidation solution alkaline in thermal oxide slot 701, dirt-removing power is extremely strong, directly by iron and steel parts be put into heated oxide slot into Row oil removal treatment, can effectively remove the greasy dirt of surface of steel workpiece, and without additional setting degreasing tank, reduce equipment at This.

S803, accumulator tank embathe: the iron and steel parts after oil removal treatment being put into accumulator tank 702 and are embathed；

S804, it sprays for second: the iron and steel parts after embathing being sprayed using the sewage in primary cycle cesspool 712 Leaching cleaning 2~3 minutes (being carried out in the first spraying zone 703)；

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

S806, pickling: iron and steel parts are immersed in dilute hydrochloric acid slot 706 and are derusted 15~30 minutes；

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

S808, third time spray: being sprayed using the sewage in primary cycle cesspool 712 to the iron and steel parts after embathing Leaching cleaning 2~3 minutes, to rinse workpiece surface residual acid solution (carrying out in the first spraying zone 703) well；

Specification is needed, the spray and oxygen due to the sewage in primary cycle cesspool from the oxidation pre-treatment That changes post-processing embathes sewage be discharged, containing sodium nitrite, therefore using the sewage in primary cycle cesspool to steel Ironworker's part be sprayed acid solution, can effectively avoid using directly flushing with tap water acid solution because not in time and caused by become rusty windward Phenomenon.

S809, accumulator tank embathe: the iron and steel parts after spray irrigation acid solution being put into accumulator tank 702 and are embathed；

S810, oxidation: iron and steel parts are put into the oxidation solution oxide in heated oxide slot 701 15~90 minutes (preferably It is 25~40 minutes), to generate in surface of steel workpiece with Fe₃O₄Oxidation film as main component；

S811, cooling: the iron and steel parts after oxidation processes are put into accumulator tank 702 and carry out cooling treatment；

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

S813, soaker embathe: being first put into iron and steel parts dirtier in the first soaker 707 and the second soaker 708 The neter soaker that soaker is placed into after being embathed in the first soaker 707 and the second soaker 708 is embathed；

Illustrate it is required that dirtier soaker refers to the soaker for being first put into iron and steel parts, neter soaker refer to by Iron and steel parts are put into the soaker placed into after dirtier soaker embathes, due to be first put into soaker when, surface of steel workpiece Alkaline solution it is more, therefore, the soaker being first put into can be dirtier, after the soaker that is put into it is cleaner.When dirtier soaker (example Such as, the first soaker) in water it is dirty enough and when can not carry out embathing operation, need the sewage row in the first soaker It releases and (is specifically discharged into after being filtered in sedimentation basin and is drained into primary cycle cesspool), and will be in secondary cycle cesspool Sewage (relatively clean) adds in the first soaker, and at this time, neter soaker (the second soaker) originally is compared to be infused again Enter for the first soaker of the sewage in secondary cycle cesspool, has reformed into dirtier soaker, and the first soaker is then Become neter soaker, operates repeatedly.

S814, the 5th spray (i.e. second of spray of oxidative work-up): using the dirt in secondary cycle cesspool 713 Water carries out spray cleaning 2~3 minutes to iron and steel parts, further to rinse surface of steel workpiece well (in the second spraying zone 709 It carries out)；

It should be noted that the sewage in the secondary cycle cesspool 713 is known as secondary cycle sewage, the oxygen is come from Change sewage that all sprays in post-processing in addition to first time spray are discharged and after neutralisation treatment.

Since the sewage that all sprays in the oxidative work-up in addition to first time spray are discharged has centainly Alkalinity, so needing to be added acid into the secondary cycle cesspool 713 to neutralize.

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

The dosage of tap water is reduced while in order to thoroughly clean up surface of steel workpiece again, the present embodiment is using pressurization Pump so that last time spray injection water be pressurized water, and control last time spray injection water consumption, make itself and electricity The moisture evaporated in thermal oxide grass 701 and accumulator tank 702 is balanced.

For example, it is assumed that 701 power of heated oxide slot in main process task is 30 kilowatts, operating temperature is 140 °, aoxidizes solution Volume is 400 liters, and workpieces processing weight average is 300 kilograms/every frame, then, aoxidize under solution heated condition it is average per hour About 8 liters of water evaporation quantity, stop about 10 liters of evaporation overnight after heating.In addition, after the solution in accumulator tank 702 is due to absorbing oxidation The heat of workpiece, evaporation capacity about 5~10 liters of water daily.Assuming that the processing of every frame workpiece and the oil removing time about 40~60 minutes, The spray flow for then executing last time spray (using tap water) to every frame workpiece should be less than 6~8 liters of water, and therefore, the present invention adopts It can make that the droplet ejected is tiny with booster pump and impact force is strong, displacement is 1.5 liters per minute, and frame workpiece every enough cleans 3 ~5 minutes.

S816, oil sealing: iron and steel parts are put into emulsification oil groove 710 and carry out oil sealing processing.

Wherein, above-mentioned steps (1)~step (9) is oxidation pretreatment process, and step (10)~(11) are oxidation main process task Process, step (12)~step (16) are oxidative work-up procedure.In above-mentioned steps, the spray (packet of the oxidation pre-treatment Spray, second spray and third time for the first time is included to spray) and first time spray in oxidative work-up and pass through soaker The sewage being discharged after embathing forms primary cycle sewage after filtration treatment, and the primary cycle effluent cycle is used in institute It states the spray (including spray, second spray and third time spray for the first time) in oxidation pre-treatment and embathes (including accumulator tank Embathe and embathed with lead-over groove) and the oxidative work-up in first time spray the 4th time of i.e. entire technique (spray)；Institute State all sprays (including the 5th spray and the 6th spray) discharge in oxidative work-up in addition to first time spray Sewage forms secondary cycle sewage after neutralisation treatment, and the secondary cycle effluent cycle is used in the oxidative work-up (drill traverse is embathed except remaining for the first time and in addition to last time spray sprays (the 5th spray of i.e. entire technique) and embathe It washes).

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

The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as Protection scope of the present invention.

Claims

1. a kind of iron and steel parts oxidation processing technique for realizing sewage zero-discharge, including oxidation pre-treatment, oxidation main process task and oxygen Change post-processing, which is characterized in that in addition to the last time of oxidative work-up spray is carried out using tap water, the oxidation Water used in pre-treatment discharges in the oxidation pre-treatment and oxidative work-up and sewage after treatment, the oxygen Change remaining spray of post-processing and embathe used water and discharges and pass through in the oxidation pre-treatment and oxidative work-up Treated sewage, water used in the oxidation main process task discharges in the oxidation pre-treatment and oxidative work-up and warp Sewage of crossing that treated；And the originally water consumption for controlling the last time spray of the oxidative work-up is equal to the main place of oxidation Water evaporation quantity in reason.

2. realizing the iron and steel parts oxidation processing technique of sewage zero-discharge as described in claim 1, which is characterized in that the oxygen The sewage be discharged and after filtration treatment that embathes of the spray and oxidative work-up of changing pre-treatment is primary cycle sewage, Sewage that the spray of the oxidative work-up is discharged and after neutralisation treatment is secondary cycle sewage；

Remaining spray in the oxidative work-up in addition to last time sprays and water used in embathing are all from the second level Circulating sewage.

3. realizing the iron and steel parts oxidation processing technique of sewage zero-discharge as described in claim 1, which is characterized in that the oxygen Change the first time spray in the spray and oxidative work-up of pre-treatment and embathes sewage be discharged and after filtration treatment It is that all sprays in the oxidative work-up in addition to first time spray are discharged and by neutralizing for primary cycle sewage Treated, and sewage is secondary cycle sewage；

First time in the oxidative work-up sprays used water and comes from the primary cycle sewage, the oxidative work-up In except for the first time and remaining spray in addition to last time sprays and water used in embathing are all from the secondary cycle sewage.

4. a kind of iron and steel parts oxidization processing system for realizing sewage zero-discharge, including oxidation pretreating device, oxidation main process task Device and oxidative work-up device, which is characterized in that except the last time spray of the oxidative work-up device uses tap water Except progress, water used in the oxidation pretreating device is in the oxidation pretreating device and oxidative work-up device Discharge and by sewage-treatment plant treated sewage, the oxidative work-up device executes remaining spray and embathes and used Water discharged in the oxidation pretreating device and oxidative work-up device and by sewage-treatment plant treated dirt Water, water used in the oxidation primary processing unit in the oxidation pretreating device and oxidative work-up device discharge and By sewage-treatment plant treated sewage；Control the tap water use that the oxidative work-up device implements last time spray Amount is equal to the water evaporation quantity in the oxidation primary processing unit.

5. realizing the iron and steel parts oxidization processing system of sewage zero-discharge as claimed in claim 4, which is characterized in that the dirt Water treatment facilities includes filtration treatment device and neutralisation treatment device, after the oxidation pretreating device executes spray and oxidation It is primary cycle sewage that sewage be discharged and after filtration treatment device is embathed in processing unit execution, after the oxidation It is secondary cycle sewage that reason device, which executes sewage that spray is discharged and after neutralisation treatment device,；

Remaining spray in the oxidative work-up in addition to executing last time and spraying and water used in embathing are all from described Secondary cycle sewage.

6. realizing the iron and steel parts oxidization processing system of sewage zero-discharge as claimed in claim 4, which is characterized in that the dirt Water treatment facilities includes filtration treatment device and neutralisation treatment device, after the oxidation pretreating device executes spray and oxidation It is primary cycle sewage that processing unit, which executes and sprays and embathe sewage be discharged and after filtration treatment device for the first time, All sprays in the oxidative work-up device in addition to executing the first time spray are discharged and process neutralisation treatment fills The sewage postponed is secondary cycle sewage；

The oxidative work-up device executes sprays used water from the primary cycle sewage, after the oxidation for the first time Processing unit, which executes remaining spray in addition to first time and last time spray and embathes used water, is all from the second level Circulating sewage.

7. a kind of iron and steel parts oxidation processing technique for realizing sewage zero-discharge, which is characterized in that comprising steps of

S5, iron and steel parts are put into lead-over groove and are embathed；

S7, iron and steel parts are put into lead-over groove and are embathed；

S9, iron and steel parts are put into accumulator tank and are embathed；

S10, it iron and steel parts is put into heated oxide slot aoxidizes；

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

S14, iron and steel parts are sprayed using tap water；

S15, iron and steel parts are subjected to oil sealing processing；

Wherein, above-mentioned steps S1~step S9 is oxidation pretreatment process, and step S10~S11 is oxidation main process task process, step S12~step S15 is oxidative work-up procedure；It spray in the oxidation pretreatment process and is discharged by the soaker Sewage the primary cycle sewage is formed after filtration treatment；The sewage of spray discharge in the oxidative work-up procedure The secondary cycle sewage is formed after neutralisation treatment；

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

By the originally water consumption in rate-determining steps S14, make itself and the water evaporation quantity phase in the heated oxide slot, accumulator tank Deng.

8. a kind of iron and steel parts oxidation processing technique for realizing sewage zero-discharge as claimed in claim 7, which is characterized in that institute Stating lead-over groove includes First Transition slot and the second lead-over groove, and the water in the First Transition slot comes from the primary cycle sewage, Water in second lead-over groove comes from the First Transition slot；

9. a kind of iron and steel parts oxidation processing technique for realizing sewage zero-discharge as claimed in claim 7, which is characterized in that Between the step S11 and step S13, further comprise the steps of:

The sewage warp that iron and steel parts after cooling are sprayed using the sewage in primary cycle cesspool, and are discharged after spraying The primary cycle sewage is formed after crossing filtration treatment.

10. a kind of iron and steel parts oxidization processing system for realizing sewage zero-discharge, which is characterized in that including heated oxide slot, return Receive slot, the first spraying zone, lead-over groove, pickling tube, soaker, the second spraying zone, emulsification oil groove, sedimentation basin, primary cycle sewage Pond and secondary cycle cesspool, in which:

The heated oxide slot is used for heated oxide and oil removing, and the iron and steel parts taken out from the heated oxide slot first pass through Accumulator tank embathes, and is put into before pickling tube or first passes through lead-over groove from the iron and steel parts after taking-up in pickling tube and embathe, described First spraying zone is for the spray before iron and steel parts oxidation, and second spraying zone is for the spray after iron and steel parts oxidation, institute Soaker is stated for embathing after iron and steel parts oxidation；

Sewage is discharged to after sedimentation tank filter by first spraying zone, soaker by sewage pipe flows into the primary cycle Cesspool；Primary cycle sewage in the primary cycle cesspool can be pumped out by pump and water pipe and add to the recycling Slot, lead-over groove and the spray as first spraying zone use；

The sewage of the second spraying zone discharge, which flows into secondary cycle cesspool, to be neutralized, the secondary cycle sewage Secondary cycle sewage in pond can pump out and add to the soaker and as second spraying zone by pump and water pipe Spray use；Second spraying zone is also connected with running water pipe to carry out last time and spray use；

The water of the heated oxide slot comes from the accumulator tank；

By controlling the displacement of the running water pipe, make itself and the water evaporation quantity phase in the heated oxide slot, accumulator tank Deng.