CN108706785A - A kind of mining smelting wastewater exception water quality emergency treatment device and method - Google Patents
A kind of mining smelting wastewater exception water quality emergency treatment device and method Download PDFInfo
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- CN108706785A CN108706785A CN201810908637.9A CN201810908637A CN108706785A CN 108706785 A CN108706785 A CN 108706785A CN 201810908637 A CN201810908637 A CN 201810908637A CN 108706785 A CN108706785 A CN 108706785A
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- aeration tank
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- slurry
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- 239000002351 wastewater Substances 0.000 title claims abstract description 109
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000011282 treatment Methods 0.000 title claims abstract description 30
- 238000005065 mining Methods 0.000 title claims abstract description 26
- 238000003723 Smelting Methods 0.000 title claims abstract description 24
- 238000005273 aeration Methods 0.000 claims abstract description 157
- 238000004062 sedimentation Methods 0.000 claims abstract description 91
- 239000002002 slurry Substances 0.000 claims abstract description 64
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 63
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 40
- 239000007844 bleaching agent Substances 0.000 claims abstract description 38
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 claims abstract description 37
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000004576 sand Substances 0.000 claims abstract description 35
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 239000010802 sludge Substances 0.000 claims abstract description 11
- 230000013011 mating Effects 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 55
- 238000012806 monitoring device Methods 0.000 claims description 26
- 238000012545 processing Methods 0.000 claims description 21
- 230000002159 abnormal effect Effects 0.000 claims description 14
- 229910052785 arsenic Inorganic materials 0.000 claims description 13
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 12
- 239000012065 filter cake Substances 0.000 claims description 11
- 239000000706 filtrate Substances 0.000 claims description 11
- 238000007726 management method Methods 0.000 claims description 11
- 239000002910 solid waste Substances 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 11
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 10
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 8
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000000460 chlorine Substances 0.000 claims description 8
- 229910052801 chlorine Inorganic materials 0.000 claims description 8
- 230000007613 environmental effect Effects 0.000 claims description 7
- 239000003344 environmental pollutant Substances 0.000 claims description 7
- 231100000719 pollutant Toxicity 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 229910021529 ammonia Inorganic materials 0.000 claims description 6
- 238000009287 sand filtration Methods 0.000 claims description 5
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 4
- 125000000524 functional group Chemical group 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- -1 iron ion Chemical class 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 239000010842 industrial wastewater Substances 0.000 abstract description 7
- 235000011121 sodium hydroxide Nutrition 0.000 description 15
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 7
- 229910052725 zinc Inorganic materials 0.000 description 7
- 239000011701 zinc Substances 0.000 description 7
- 238000003672 processing method Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 241001062472 Stokellia anisodon Species 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 2
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000004912 1,5-cyclooctadiene Substances 0.000 description 1
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000005555 metalworking Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- ODZPKZBBUMBTMG-UHFFFAOYSA-N sodium amide Chemical compound [NH2-].[Na+] ODZPKZBBUMBTMG-UHFFFAOYSA-N 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/103—Arsenic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a kind of mining smelting wastewater exception water quality emergency treatment device and methods, described device has level-one aeration tank, once sedimentation basin is sequentially connected in series behind level-one aeration tank, " S " type aeration tank, secondary sedimentation tank and sand filter, with primary sedimentation basin and secondary sedimentation tank are also mating is connected with slurry tank, tank is added equipped with bleaching powder and the concentrated sulfuric acid adds tank above level-one aeration tank, flocculant concentration tank is equipped with above primary sedimentation basin, above " S " type aeration tank tank is added equipped with heavy metals removal agent, bleaching powder adds tank and sodium hydroxide adds tank, above sand filter tank is added equipped with the concentrated sulfuric acid, the level-one aeration tank and " S " type aeration tank bottom are equipped with aeration tube, the primary sedimentation basin and secondary sedimentation tank bottom convey mud into slurry tank by sludge pump and slurry pipeline；The present invention contains heavy metal, COD, NH suitable for what coloured industry production process generated3One or more pollution factor Industrial Wastewater Treatments such as-N.
Description
Technical field
The present invention relates to industrial wastewater treatment technology field more particularly to a kind of emergent places of mining smelting wastewater exception water quality
Device and method is managed, the method for the present invention and device can be used for containing for the processes such as coloured industry mining, ore dressing, smelting, processing generation
Cadmium, arsenic, lead, zinc, copper, COD, NH3One or more pollution factor industrial wastewater emergency disposals such as-N.
Background technology
With the fast development of industry, the continuous expansion of city size, the environment that we depend on for existence is by increasingly tighter
The pollution of weight.The waste water that especially industries such as metallurgy, chemical industry, mining generate has potentially hazardous property, especially in waste water
The micro- concentration of the heavy metals such as arsenic, lead, cadmium just has more significant bio-toxicity, directly endangers the living environment of the mankind.At this stage, I
State's most enterprises handle industrial wastewater using neutralization precipitation method, which has simple for process, and it is excellent that waste water dis posal is of low cost etc.
Point.But according to existing industrial wastewater treatment system operating statistic the results show that conventional neutralization precipitation process waste water accounts for
Ground area is big, and processing speed is slow, more single to the pollution factor tupe of waste water, although most time effluent qualities
Meet the requirement of discharging standards, it can be difficult to the pollutant kind variation of reply burst, lacks waste water exception emergency processing
Device often has several times or more the frequency and water quality deterioration occurs in 1 year, it is difficult to which satisfaction lasts up to target requirement, while water quality
Deteriorate, waste water treatment system generally requires the recovery time of long period.
Reason is analyzed, first, the waste water of factory's maintenance process is related to a variety of pollution factors, the pollution generated with daily production
The difference of object content is larger；Second is that factory itself production technology variation, the irregular operating and operation error of waste water disposal facility, sternly
The normal operation of industrial wastewater treatment system is affected again；As environmental protection supervision and punishment increase, exception water quality situation pair
Production pressure that enterprise brings, production cost go up all influence it is notable.
In view of the above-mentioned problems, it is necessary to establish a set of industrial wastewater emergency treatment device and processing method, to cope with burst
Abnormal waste water or waste water abnormal state, the environmental protection pressure for avoiding unnecessary abnormal discharge of wastewater from bringing.
Invention content
The purpose of the present invention is difficult to adapt to pollution factor type, pollutant aiming at current existing waste water treatment system
Changes of contents, waste water treatment system application range is narrow, bad to the pollutant of burst leakage treatment effect, to enterprise bring compared with
The problem of big environmental protection pressure, provides a kind of mining smelting wastewater exception water quality emergency treatment device and method.
A kind of mining smelting wastewater exception water quality emergency treatment device of the present invention has level-one aeration tank, level-one aeration
Once sedimentation basin, " S " type aeration tank, secondary sedimentation tank and sand filter are sequentially connected in series by waste water delivery pipe behind pond, it is secondary heavy
Waste water delivery pipe between shallow lake pond and sand filter is equipped with waste water delivery pump, with primary sedimentation basin and the also mating company of secondary sedimentation tank
It is connected to slurry tank, primary sedimentation basin and secondary sedimentation tank bottom convey mud into slurry tank by sludge pump and slurry pipeline
Slurry, the level-one aeration tank and " S " type aeration tank bottom are equipped with aeration tube；It is added equipped with bleaching powder above level-one aeration tank
Tank and the concentrated sulfuric acid add tank, and flocculant is equipped with above primary sedimentation basin（PAM）Tank is added, is equipped with above " S " type aeration tank
Heavy metals removal agent adds tank, bleaching powder or sodium hydroxide and adds tank, and sand filter top adds tank, the bleaching powder equipped with the concentrated sulfuric acid
Essence adds tank, the concentrated sulfuric acid adds tank, flocculant concentration tank and heavy metals removal agent add tank and bleaching powder or sodium hydroxide
（NaOH）It adds and is respectively arranged with outlet tube below tank, solenoid valve and electronic flowmeter are respectively arranged on outlet tube；It is aerated in " S " type
PH on-line monitoring devices are also equipped in the waste water delivery pipe in pond and level-one aeration tank exit and sand filter exit, described two
Liquid level on-line monitoring device is equipped with above secondary sedimentation basin and slurry tank.
The present invention is also added there are one PLC control system, and the PLC control system is supervised with each solenoid valve, pH online respectively
Control device and the control connection of liquid level on-line monitoring device, the solenoid valve below each outlet tube and electronic flowmeter interlocked control；
The concentrated sulfuric acid add the solenoid valve on tank outlet tube also with respective pH on-line monitoring devices interlocked control, bleaching powder or hydrogen-oxygen
Change sodium and adds the solenoid valve on tank outlet tube and the pH on-line monitoring device interlocked controls above " S " type aeration tank, waste water conveying
The liquid level on-line monitoring device of the liquid level on-line monitoring device interlocked control of pump and secondary sedimentation tank, sludge pump and slurry tank interlocks
Control；Slurry tank is connected by discharge nozzle with filter press, and sludge pump is also provided on the discharge nozzle of slurry tank, with slurry tank
Liquid level on-line monitoring device interlocked control.
Heretofore described level-one aeration tank, primary sedimentation basin, " S " type aeration tank, secondary sedimentation tank and sand filter position
Set reduces arrangement successively, can save unnecessary waste water delivery pump using being conveyed in waste water gravity automatically downward first device
And electric power resource.
The method of a kind of mining smelting wastewater exception water quality emergency treatment device processing exception water quality of the present invention, when being
Real monitoring waste water treatment system water-in and water-out water quality, if continuous 6 hours of influent quality or more COD contents >=200mg/L or NH3-N
>=15mg/L or COD >=200mg/L and NH3- N >=15mg/L, then operate in the steps below：
（1）By waste water input level-one aeration tank, bleaching powder is added by 5-8 times of COD and total amount of ammonia, is reacted 10-15 minutes, control
PH value processed is 9-11；The content of effective chlorine is more than 60% in the bleaching powder；
（2）It is 6-8 to add concentrated sulfuric acid readjustment level-one aeration tank to go out liquid pH in the outlet of level-one aeration tank, and level-one aeration tank is made to go out liquid
Into in primary sedimentation basin, flocculant is added to primary sedimentation basin entrance, body refuse is made to settle；
（3）The clear liquid of primary sedimentation basin enters in " S " type aeration tank, the content of COD and ammonia nitrogen is detected, in " S " type aeration tank
Portion adds the bleaching powder of 5-8 times of COD and total amount of ammonia, reacts 10-15 minutes, further removes COD and ammonia nitrogen in waste water；
（4）Liquid after the reaction of " S " type aeration tank enters second-level settling pond, adds flocculant to second-level settling pond entrance, makes
Body refuse settles, and clear liquid enters sand filter, and sand filter outlet concentrated sulfuric acid adjusting water outlet pH to 6-9 reaches discharge standard and normally arranges
It puts；
In above-mentioned processing procedure, the mud of primary sedimentation basin and second-level settling pond bottom, which is delivered to by slush pump in slurry tank, to be stored up
Deposit, the Slurry Storage in slurry tank carries out press filtration to being delivered in filter press after a certain amount of, filter cake by solid waste standard into
Row management, filtrate return to level-one aeration tank circular treatment；In the above process, the exposure of level-one aeration tank and " S " type aeration tank bottom
Compressed air is passed through in feed channel, control compressed air pressure is 30-40KPa.
The method of a kind of mining smelting wastewater exception water quality emergency treatment device processing exception water quality of the present invention, when being
Real monitoring waste water treatment system water-in and water-out water quality, if continuous 6 hours of influent quality or more heavy metal index >=10mg/L, is pressed
Following step operates：
（1）Waste water is delivered to level-one aeration tank, outlet waste water in level-one aeration tank adds the concentrated sulfuric acid and adjusts pH to 6-9, waste water warp
Primary sedimentation basin adds flocculant sedimentation；
（2）Clear liquid in primary sedimentation basin enters " S " type aeration tank, and heavy metals removal agent is added in " S " type aeration tank inlet,
Then reaction time 15-20 minute adds the sodium hydroxide solution of mass fraction 30% in " S " type aeration tank stage casing, adjust waste water
After pH to 10-12, react 15-20 minutes；The dosage of the heavy metals removal agent is the 100-150 of initial arsenic content in waste water
Times；
（3）Waste water is discharged into second-level settling pond, after adding flocculant sedimentation body refuse, clear liquid enters sand filter, and sand filter outlet is thrown
Enriching sulfuric acid adjusts back pH to 6-9, reaches discharge standard normal discharge；
In above-mentioned processing procedure, the mud of primary sedimentation basin and second-level settling pond bottom, which is delivered to by slush pump in slurry tank, to be stored up
Deposit, the Slurry Storage in slurry tank carries out press filtration to being delivered in filter press after a certain amount of, filter cake by solid waste standard into
Row management, filtrate return to level-one aeration tank circular treatment；In the above process, the exposure of level-one aeration tank and " S " type aeration tank bottom
Compressed air is passed through in feed channel, control compressed air pressure is 30-40KPa.
The method of a kind of mining smelting wastewater exception water quality emergency treatment device processing exception water quality of the present invention, when being
Real monitoring waste water treatment system water-in and water-out water quality, if continuous 6 hours of influent quality or more COD contents >=200mg/L, NH3-N≥
15mg/L and heavy metal index >=10mg/L, then operate in the steps below：
（1）Waste water is delivered in level-one aeration tank, bleaching powder, 10-15 points of reaction are added by 5-8 times of COD and total amount of ammonia
Clock, control ph 9-11；The content of effective chlorine is more than 60% in the bleaching powder；
（2）It is 6-8 that the outlet of level-one aeration tank, which adds concentrated sulfuric acid readjustment level-one aeration tank to go out liquid pH, into primary sedimentation basin, is thrown
Enter flocculant sedimentation body refuse；
（3）Primary sedimentation basin clear liquid enters in " S " type aeration tank, adds heavy metals removal agent in " S " type aeration tank inlet, instead
15-20 minutes between seasonable, the sodium hydroxide solution of mass fraction 30% is then added in " S " type aeration tank stage casing, adjusts wastewater pH
To 10-12, react 15-20 minutes；The dosage of the heavy metals removal agent is the 100-150 of initial arsenic content in waste water
Times；
（4）Treated for " S " type aeration tank, and waste water is put into second-level settling pond, and clear liquid enters sand filtration after adding flocculant sedimentation silt
Pond, sand filter water outlet readjustment pH to 6-9, reaches discharge standard normal discharge；
In above-mentioned processing procedure, the mud of primary sedimentation basin and second-level settling pond bottom, which is delivered to by slush pump in slurry tank, to be stored up
Deposit, the Slurry Storage in slurry tank carries out press filtration to being delivered in filter press after a certain amount of, filter cake by solid waste standard into
Row management, filtrate return to level-one aeration tank circular treatment；In the above process, the exposure of level-one aeration tank and " S " type aeration tank bottom
Compressed air is passed through in feed channel, control compressed air pressure is 30-40KPa.
When COD in effluent quality or heavy metal or NH in the present invention3- N indexs are not met《Copper, nickel, cobalt industrial pollutants row
Put standard》GB25467-2010 emission limits, it will be in abnormal water outlet input level-one aeration tank, according to abnormal kind of effluent quality
Class carries out respective handling according to above-mentioned correlation method.
Heretofore described heavy metals removal agent is the heavy metal using the production of Changsha Sai Ensi Environmental Protection Technology Co., Ltd
Remover, it is a kind of mixture rich in iron ion, polyhydroxy, more carboxyl functional groups.
Bleaching powder used in the present invention, may be used hydrogen peroxide, sodium chlorate replaces, and sodium hydroxide solution used can be with
It is replaced using sodium carbonate, Sodamide, when replacement is adjusted using corresponding pharmaceutical quantities according to chemical reaction relationship.
The principle of the present invention is：Level-one aeration tank, " S " type aeration tank are passed through compressed air, keep medicament effective with pollutant
Mixing improves reaction efficiency, while increasing dissolved oxygen amount, is conducive to the removal of COD and the stripping of ammonia nitrogen；The bleaching powder added is in water
Middle formation hypochlorous acid achievees the purpose that remove ammonia nitrogen and COD, react as follows：
HClO→H++Cl-+ [ O ]
2NH4 ++3HClO→N2+3H2O+5H++3Cl-。
Heavy metals removal agent used in " S " type aeration tank is produced by Changsha Sai Ensi Environmental Protection Technology Co., Ltd, is a kind of
Mixture rich in iron ion, polyhydroxy, more carboxyl functional groups forms amorphous state by heavy metal coordinate-hydrolyze
Sediment achievees the purpose that remove heavy metal in waste water.
PH value adjusting, the operation etc. of adding of agent, delivery pump, are automatically controlled by PLC control system in the present invention, are realized
The automatic operating of waste water emergency disposal；Meet a variety of pollution factors emergency disposal simultaneously, strong shock resistance, the emergent place of waste water
Manage effect stability；Floor space is small, and cost of investment is low, uses caustic soda（NaOH）PH value is adjusted, with traditional neutralization precipitation method phase
Than body refuse amount is small, can be widely applied to mining, smelts, metal-working industry waste water emergency processing.
Apparatus of the present invention and method disclosure satisfy that the disposition of abnormal waste water, can significantly reduce ammonia nitrogen in waste water, COD, heavy metal
Etc. indexs, outer draining meet《Copper, nickel, cobalt emission of industrial pollutants standard》GB25467-2010 emission limits, and it is easy to operate,
Processing time is short, regulating effect is good, can in time, the processing exception waste water stablized, it is up to standard to realize that outer draining continues, can answer extensively
For waste water treatment industry.
Description of the drawings
Fig. 1 is the device of the invention and control system connection signal general flow chart；
In figure：1-level-one aeration tank, 2-waste water delivery pipes, 3-primary sedimentation basins, 4-" S " type aeration tanks, 5-secondary precipitations
Pond, 6-sand filters, 7-waste water delivery pumps, 8-slurry tanks, 9-sludge pumps, 10-slurry pipelines, 11-aeration tubes, 12-
Bleaching powder adds tank, and the 13-concentrated sulfuric acids add tank, 14-flocculant concentration tanks, and 15-heavy metals removal agent add tank, 16-drifts
Powder essence or sodium hydroxide add tank, and the 17-concentrated sulfuric acids add tank, 18-outlet tubes, 19-solenoid valves, 20-electronic flowmeters,
21-pH on-line monitoring devices, 22-liquid level on-line measurement devices, 23-PLC control systems, 24-discharge nozzles.
Specific implementation mode
Following embodiments 1 are the specific embodiment of apparatus of the present invention, and following embodiments are served only for illustrating the present invention, no
The limitation present invention in any form.
Embodiment 1
A kind of mining smelting wastewater exception water quality emergency treatment device has level-one aeration tank 1, by useless behind level-one aeration tank 1
Water delivery pipe 2 is sequentially connected in series once sedimentation basin 3, " S " type aeration tank 4, secondary sedimentation tank 5 and sand filter 6, secondary sedimentation tank 5
Waste water delivery pipe 2 between sand filter 6 is equipped with waste water delivery pump 7, also mating with primary sedimentation basin 3 and secondary sedimentation tank 5
It is connected with slurry tank 8, primary sedimentation basin 3 and 5 bottom of secondary sedimentation tank are by sludge pump 9 and slurry pipeline 10 to slurry tank
Mud is conveyed in 8, the level-one aeration tank 1 and 4 bottom of " S " type aeration tank are equipped with aeration tube 11；Above level-one aeration tank 1
Tank 12 is added equipped with bleaching powder and the concentrated sulfuric acid adds tank 13, flocculant concentration tank 14 is equipped with above primary sedimentation basin 3, at " S "
4 top of type aeration tank adds tank 15, bleaching powder or sodium hydroxide equipped with heavy metals removal agent and adds tank 16, and 6 top of sand filter is set
There is the concentrated sulfuric acid to add tank 17, the bleaching powder adds tank 12, the concentrated sulfuric acid adds tank 13 and 17, flocculant concentration tank 14 and heavy metal
Remover adds tank 15 and bleaching powder or sodium hydroxide adds 16 lower section of tank and is respectively arranged with outlet tube 18, and electricity is respectively arranged on outlet tube 18
Magnet valve 19 and electronic flowmeter 20；In the useless of 6 exit of " S " the type aeration tank 4 and 1 exit of level-one aeration tank and sand filter
It is also equipped with pH on-line monitoring devices 21 in water delivery pipe 2, it is online that liquid level is equipped with above the secondary sedimentation tank 5 and slurry tank 8
Monitoring device 22.
Also added in the present embodiment device there are one PLC control system 23, the PLC control system 23 respectively with each electromagnetism
Valve 19, pH on-line monitoring devices 21 and the control connection of liquid level on-line monitoring device 22, the solenoid valve 19 of 18 lower section of each outlet tube
With 20 interlocked control of electronic flowmeter；The concentrated sulfuric acid adds the solenoid valve 19 on tank 13 and 17 outlet tubes and also exists with respective pH
21 interlocked control of line monitoring device, bleaching powder or sodium hydroxide add solenoid valve 19 and " S " type aeration tank 4 on 16 outlet tube of tank
21 interlocked control of pH on-line monitoring devices of top, the liquid level on-line monitoring device 22 of waste water delivery pump 7 and secondary sedimentation tank 5
Lock control, 22 interlocked control of liquid level on-line monitoring device of sludge pump 9 and slurry tank 8；Slurry tank 8 passes through discharge nozzle 24 and press filtration
Machine is connected, and sludge pump 9 is also provided on the discharge nozzle 24 of slurry tank 8, is interlocked with the liquid level on-line monitoring device 22 of slurry tank 8
Control.
Level-one aeration tank described in the present embodiment 1, primary sedimentation basin 2, " S " type aeration tank 3, secondary sedimentation tank 4 and sand filtration
The position in pond 5 reduces arrangement successively, can save unnecessary waste water using being conveyed in waste water gravity automatically downward first device
Delivery pump and electric power resource.
Following embodiment 2-6 are the specific embodiments of the method for the present invention, and following embodiments are designed solely for the purpose of illustration this hair
Bright specific implementation method, the invention is not limited in any way.
Embodiment 2
The present embodiment explains the present invention for handling Daye Nonferrous Metal Co., Ltd. and smelt factory production waste water, through inspection
It surveys, COD contents in waste water：235.8mg/L, NH3-N：17.6mg/L, abnormal water inlet 7 hours.
A kind of mining smelting wastewater exception water quality emergency processing method, includes the following steps：
（1）By waste water input level-one aeration tank, bleaching powder 1.8g/L is added, is reacted 15 minutes, control ph 10.5；The drift
The content of effective chlorine is more than 60% in powder essence；
（2）It is 8 to add concentrated sulfuric acid readjustment level-one aeration tank to go out liquid pH in the outlet of level-one aeration tank, make level-one aeration tank go out liquid into
Enter in primary sedimentation basin, adds flocculant to primary sedimentation basin entrance, body refuse is made to settle；
（3）The clear liquid of primary sedimentation basin enters in " S " type aeration tank, and detection COD contents are 120mg/L and NH3N content：
11.5mg/L adds bleaching powder 0.9g/L in the middle part of " S " the type aeration tank, reacts 10 minutes, further remove COD in waste water and
Ammonia nitrogen；
（4）Liquid after the reaction of " S " type aeration tank enters second-level settling pond, adds flocculant to second-level settling pond entrance, makes
Body refuse settles, and clear liquid enters sand filter, sand filter outlet concentrated sulfuric acid adjusting water outlet pH to 7, and water outlet indices are：COD：
30.2mg/L NH3-N：1.5mg/L reaches discharge standard normal discharge；
In above-mentioned processing procedure, the mud of primary sedimentation basin and second-level settling pond bottom, which is delivered to by slush pump in slurry tank, to be stored up
Deposit, the Slurry Storage in slurry tank carries out press filtration to being delivered in filter press after a certain amount of, filter cake by solid waste standard into
Row management, filtrate return to level-one aeration tank circular treatment；In the above process, the exposure of level-one aeration tank and " S " type aeration tank bottom
Compressed air is passed through in feed channel, control compressed air pressure is 30-40KPa.
The heavy metals removal agent is the heavy metals removal agent produced using Changsha Sai Ensi Environmental Protection Technology Co., Ltd, it
It is a kind of mixture rich in iron ion, polyhydroxy, more carboxyl functional groups.Similarly hereinafter.
Embodiment 3
The present embodiment is for handling Daye Nonferrous Metal Co., Ltd. and smelt factory production waste water, after testing, arsenic in waste water
A concentration of 12.5mg/L, copper concentration 1.5mg/L, zinc concentration 1.2mg/L, COD 250.8mg/L, NH3- N is 18.6mg/
L, abnormal water inlet 8 hours.
A kind of mining smelting wastewater exception water quality emergency processing method, includes the following steps：
（1）Waste water is delivered in level-one aeration tank, bleaching powder 1.6g/L is added, is reacted 10-15 minutes, control ph 11；
The content of effective chlorine is more than 60% in the bleaching powder；
（2）It is 6 that the outlet of level-one aeration tank, which adds concentrated sulfuric acid readjustment level-one aeration tank to go out liquid pH, into primary sedimentation basin, input
Flocculant settles body refuse；
（3）Primary sedimentation basin clear liquid enters in " S " type aeration tank, adds heavy metals removal agent in " S " type aeration tank inlet, instead
20 minutes between seasonable, the sodium hydroxide solution of mass fraction 30% is then added in " S " type aeration tank stage casing, adjust wastewater pH to
After 11, react 15 minutes；The dosage of the heavy metals removal agent is 1.5g/L；
（4）Treated for " S " type aeration tank, and waste water is put into second-level settling pond, and clear liquid enters sand filtration after adding flocculant sedimentation silt
Pond, sand filter water outlet readjustment pH to 6.8, detection indices are：Arsenic concentration is 0.08mg/L, and copper concentration is micro, zinc concentration
To be micro, COD 28.6mg/L, NH3- N is 1.4mg/L, reaches discharge standard normal discharge；
In above-mentioned processing procedure, the mud of primary sedimentation basin and second-level settling pond bottom, which is delivered to by slush pump in slurry tank, to be stored up
Deposit, the Slurry Storage in slurry tank carries out press filtration to being delivered in filter press after a certain amount of, filter cake by solid waste standard into
Row management, filtrate return to level-one aeration tank circular treatment；In the above process, the exposure of level-one aeration tank and " S " type aeration tank bottom
Compressed air is passed through in feed channel, control compressed air pressure is 30-40KPa.
Embodiment 4
The present embodiment is for handling Daye Nonferrous Metal Co., Ltd. and smelt factory production waste water, after testing, arsenic in waste water
A concentration of 2.11mg/L, copper concentration 3.83mg/L, zinc concentration 5.26mg/L, COD 380.9mg/L, NH3- N is
30.2mg/L, abnormal water inlet 6 hours.
A kind of mining smelting wastewater exception water quality emergency processing method, includes the following steps：
（1）Waste water is delivered in level-one aeration tank, bleaching powder 2.5g/L is added, is reacted 13 minutes, control ph 9；It is described
The content of effective chlorine is more than 60% in bleaching powder；
（2）It is 7 that the outlet of level-one aeration tank, which adds concentrated sulfuric acid readjustment level-one aeration tank to go out liquid pH, into primary sedimentation basin, input
Flocculant settles body refuse；
（3）Primary sedimentation basin clear liquid enters in " S " type aeration tank, adds heavy metals removal agent in " S " type aeration tank inlet, instead
18 minutes between seasonable, the sodium hydroxide solution of mass fraction 30% is then added in " S " type aeration tank stage casing, adjust wastewater pH to
After 11, react 17 minutes；The dosage of the heavy metals removal agent is 0.3g/L；
（4）Treated for " S " type aeration tank, and waste water is put into second-level settling pond, and clear liquid enters sand filtration after adding flocculant sedimentation silt
Pond, sand filter water outlet readjustment pH to 7.2, detection indices are：Arsenic concentration 0.05mg/L, copper concentration is micro, zinc concentration
0.01mg/L, COD 27.6mg/L, NH3- N is 2.3mg/L, reaches discharge standard normal discharge；
In above-mentioned processing procedure, the mud of primary sedimentation basin and second-level settling pond bottom, which is delivered to by slush pump in slurry tank, to be stored up
Deposit, the Slurry Storage in slurry tank carries out press filtration to being delivered in filter press after a certain amount of, filter cake by solid waste standard into
Row management, filtrate return to level-one aeration tank circular treatment；In the above process, the exposure of level-one aeration tank and " S " type aeration tank bottom
Compressed air is passed through in feed channel, control compressed air pressure is 30-40KPa.
Embodiment 5
The present embodiment is for handling Daye Nonferrous Metal Co., Ltd. and smelt factory production waste water, after testing, arsenic in waste water
A concentration of 5.86mg/L, copper concentration 3.68mg/L, zinc concentration 4.32mg/L, abnormal water inlet 6 hours.
A kind of mining smelting wastewater exception water quality emergency processing method, includes the following steps：
（1）Waste water is delivered to level-one aeration tank, outlet waste water in level-one aeration tank adds the concentrated sulfuric acid and adjusts pH to 8, and waste water is through one
Secondary sedimentation basin adds flocculant sedimentation；
（2）Clear liquid in primary sedimentation basin enters " S " type aeration tank, and heavy metals removal agent is added in " S " type aeration tank inlet,
Then 15 minutes reaction time added the sodium hydroxide solution of mass fraction 30% in " S " type aeration tank stage casing, adjust wastewater pH
To after 10, react 20 minutes；The dosage of the heavy metals removal agent is the 0.9g/L of initial arsenic content in waste water；
（3）Waste water is discharged into second-level settling pond, after adding flocculant sedimentation body refuse, clear liquid enters sand filter, and sand filter outlet is thrown
Enriching sulfuric acid adjusts back pH to 7, and indices are after testing：Arsenic concentration is 0.05mg/L, and copper concentration is micro, zinc concentration be it is micro,
Reach discharge standard normal discharge；
In above-mentioned processing procedure, the mud of primary sedimentation basin and second-level settling pond bottom, which is delivered to by slush pump in slurry tank, to be stored up
Deposit, the Slurry Storage in slurry tank carries out press filtration to being delivered in filter press after a certain amount of, filter cake by solid waste standard into
Row management, filtrate return to level-one aeration tank circular treatment；In the above process, the exposure of level-one aeration tank and " S " type aeration tank bottom
Compressed air is passed through in feed channel, control compressed air pressure is 30-40KPa.
Embodiment 6
The present embodiment can be obtained for handling Daye Nonferrous Metal Co., Ltd.'s Tonglushan Mine outlet waste water through on-line checking
Effluent index, copper concentration 0.3mg/L, COD 310.5mg/L.
A kind of mining smelting wastewater exception water quality emergency processing method, includes the following steps：
（1）By waste water input level-one aeration tank, bleaching powder 1.6g/L is added, is reacted 10 minutes, control ph 9.0；The drift
The content of effective chlorine is more than 60% in powder essence；
（2）It is 6.82 to add concentrated sulfuric acid readjustment level-one aeration tank to go out liquid pH in the outlet of level-one aeration tank, and level-one aeration tank is made to go out
Liquid enters in primary sedimentation basin, adds flocculant to primary sedimentation basin entrance, body refuse is made to settle；
（3）The clear liquid of primary sedimentation basin enters in " S " type aeration tank, and detection COD contents are 135mg/L, in " S " type aeration tank
Portion adds bleaching powder 0.8g/L, reacts 15 minutes, further removes the COD in waste water；
（4）Liquid after the reaction of " S " type aeration tank enters second-level settling pond, adds flocculant to second-level settling pond entrance, makes
Body refuse settles, and clear liquid enters sand filter, sand filter outlet concentrated sulfuric acid adjusting water outlet pH to 6.5, and water outlet indices are：Copper is dense
Degree is 0.15mg/L, and COD is that 32.5mg/L reaches discharge standard normal discharge；
In above-mentioned processing procedure, the mud of primary sedimentation basin and second-level settling pond bottom, which is delivered to by slush pump in slurry tank, to be stored up
Deposit, the Slurry Storage in slurry tank carries out press filtration to being delivered in filter press after a certain amount of, filter cake by solid waste standard into
Row management, filtrate return to level-one aeration tank circular treatment；In the above process, the exposure of level-one aeration tank and " S " type aeration tank bottom
Compressed air is passed through in feed channel, control compressed air pressure is 30-40KPa.
Claims (8)
1. a kind of mining smelting wastewater exception water quality emergency treatment device has level-one aeration tank, it is characterised in that：Level-one is aerated
Once sedimentation basin, " S " type aeration tank, secondary sedimentation tank and sand filter are sequentially connected in series by waste water delivery pipe behind pond, it is secondary heavy
Waste water delivery pipe between shallow lake pond and sand filter is equipped with waste water delivery pump, with primary sedimentation basin and the also mating company of secondary sedimentation tank
It is connected to slurry tank, primary sedimentation basin and secondary sedimentation tank bottom convey mud into slurry tank by sludge pump and slurry pipeline
Slurry, the level-one aeration tank and " S " type aeration tank bottom are equipped with aeration tube；It is added equipped with bleaching powder above level-one aeration tank
Tank and the concentrated sulfuric acid add tank, and flocculant concentration tank is equipped with above primary sedimentation basin, and heavy metal is equipped with above " S " type aeration tank
Remover adds tank, bleaching powder or sodium hydroxide and adds tank, and sand filter top adds tank equipped with the concentrated sulfuric acid, and the bleaching powder adds
Tank, the concentrated sulfuric acid add that tank, flocculant concentration tank and heavy metals removal agent add tank and bleaching powder or sodium hydroxide adds below tank
It is respectively arranged with outlet tube, solenoid valve and electronic flowmeter are respectively arranged on outlet tube；Go out in " S " the type aeration tank and level-one aeration tank
PH on-line monitoring devices are also equipped at mouthful and in the waste water delivery pipe in sand filter exit, in the secondary sedimentation tank and slurry tank
Top is equipped with liquid level on-line monitoring device.
2. a kind of mining smelting wastewater exception water quality emergency treatment device according to claim 1, it is characterised in that：Also increase
If there are one PLC control system, the PLC control system is supervised with each solenoid valve, pH on-line monitoring devices and liquid level online respectively
Control device control connection, the solenoid valve below each outlet tube and electronic flowmeter interlocked control；The concentrated sulfuric acid adds tank and goes out
Solenoid valve in liquid pipe is also added with respective pH on-line monitoring devices interlocked control, bleaching powder or sodium hydroxide on tank outlet tube
Solenoid valve and " S " type aeration tank above pH on-line monitoring device interlocked controls, the liquid of waste water delivery pump and secondary sedimentation tank
Position on-line monitoring device interlocked control, the liquid level on-line monitoring device interlocked control of sludge pump and slurry tank；Slurry tank is by going out
Expects pipe is connected with filter press, and sludge pump is also provided on the discharge nozzle of slurry tank, the liquid level on-line monitoring device with slurry tank
Interlocked control.
3. a kind of mining smelting wastewater exception water quality emergency treatment device according to claim 1, it is characterised in that：It is described
Level-one aeration tank, primary sedimentation basin, " S " type aeration tank, secondary sedimentation tank and sand filter position reduce arrangement successively.
4. being handled using a kind of mining smelting wastewater exception water quality emergency treatment device as described in claims 1 or 2 or 3 abnormal
The method of water quality, it is characterised in that：When monitor waste water treatment system water-in and water-out water quality in fact, if continuous 6 hours of influent quality or more
COD contents >=200mg/L or NH3- N >=15mg/L or COD >=200mg/L and NH3- N >=15mg/L, then grasp in the steps below
Make：
（1）By waste water input level-one aeration tank, bleaching powder is added by 5-8 times of COD and total amount of ammonia, is reacted 10-15 minutes, control
PH value processed is 9-11；The content of effective chlorine is more than 60% in the bleaching powder；
（2）It is 6-8 to add concentrated sulfuric acid readjustment level-one aeration tank to go out liquid pH in the outlet of level-one aeration tank, and level-one aeration tank is made to go out liquid
Into in primary sedimentation basin, flocculant is added to primary sedimentation basin entrance, body refuse is made to settle；
（3）The clear liquid of primary sedimentation basin enters in " S " type aeration tank, the content of COD and ammonia nitrogen is detected, in " S " type aeration tank
Portion adds the bleaching powder of 5-8 times of COD and total amount of ammonia, reacts 10-15 minutes, further removes COD and ammonia nitrogen in waste water；
（4）Liquid after the reaction of " S " type aeration tank enters second-level settling pond, adds flocculant to second-level settling pond entrance, makes
Body refuse settles, and clear liquid enters sand filter, and sand filter outlet concentrated sulfuric acid adjusting water outlet pH to 6-9 reaches discharge standard and normally arranges
It puts；
In above-mentioned processing procedure, the mud of primary sedimentation basin and second-level settling pond bottom, which is delivered to by slush pump in slurry tank, to be stored up
Deposit, the Slurry Storage in slurry tank carries out press filtration to being delivered in filter press after a certain amount of, filter cake by solid waste standard into
Row management, filtrate return to level-one aeration tank circular treatment；In the above process, the exposure of level-one aeration tank and " S " type aeration tank bottom
Compressed air is passed through in feed channel, control compressed air pressure is 30-40KPa.
5. being handled using a kind of mining smelting wastewater exception water quality emergency treatment device as described in claims 1 or 2 or 3 abnormal
The method of water quality, it is characterised in that：When monitor waste water treatment system water-in and water-out water quality in fact, if continuous 6 hours of influent quality or more
Heavy metal index >=10mg/L, then operate in the steps below：
（1）Waste water is delivered to level-one aeration tank, outlet waste water in level-one aeration tank adds the concentrated sulfuric acid and adjusts pH to 6-9, waste water warp
Primary sedimentation basin adds flocculant sedimentation；
（2）Clear liquid in primary sedimentation basin enters " S " type aeration tank, and heavy metals removal agent is added in " S " type aeration tank inlet,
Then reaction time 15-20 minute adds the sodium hydroxide solution of mass fraction 30% in " S " type aeration tank stage casing, adjust waste water
After pH to 10-12, react 15-20 minutes；The dosage of the heavy metals removal agent is the 100-150 of initial arsenic content in waste water
Times；
（3）Waste water is discharged into second-level settling pond, after adding flocculant sedimentation body refuse, clear liquid enters sand filter, and sand filter outlet is thrown
Enriching sulfuric acid adjusts back pH to 6-9, reaches discharge standard normal discharge；
In above-mentioned processing procedure, the mud of primary sedimentation basin and second-level settling pond bottom, which is delivered to by slush pump in slurry tank, to be stored up
Deposit, the Slurry Storage in slurry tank carries out press filtration to being delivered in filter press after a certain amount of, filter cake by solid waste standard into
Row management, filtrate return to level-one aeration tank circular treatment；In the above process, the exposure of level-one aeration tank and " S " type aeration tank bottom
Compressed air is passed through in feed channel, control compressed air pressure is 30-40KPa.
6. being handled using a kind of mining smelting wastewater exception water quality emergency treatment device as described in claims 1 or 2 or 3 abnormal
The method of water quality, it is characterised in that：When monitor waste water treatment system water-in and water-out water quality in fact, if continuous 6 hours of influent quality or more
COD contents >=200mg/L, NH3- N >=15mg/L and heavy metal index >=10mg/L, then operate in the steps below：
（1）Waste water is delivered in level-one aeration tank, bleaching powder, 10-15 points of reaction are added by 5-8 times of COD and total amount of ammonia
Clock, control ph 9-11；The content of effective chlorine is more than 60% in the bleaching powder；
（2）It is 6-8 that the outlet of level-one aeration tank, which adds concentrated sulfuric acid readjustment level-one aeration tank to go out liquid pH, into primary sedimentation basin, is thrown
Enter flocculant sedimentation body refuse；
（3）Primary sedimentation basin clear liquid enters in " S " type aeration tank, adds heavy metals removal agent in " S " type aeration tank inlet, instead
15-20 minutes between seasonable, the sodium hydroxide solution of mass fraction 30% is then added in " S " type aeration tank stage casing, adjusts wastewater pH
To 10-12, react 15-20 minutes；The dosage of the heavy metals removal agent is the 100-150 of initial arsenic content in waste water
Times；
（4）Treated for " S " type aeration tank, and waste water is put into second-level settling pond, and clear liquid enters sand filtration after adding flocculant sedimentation silt
Pond, sand filter water outlet readjustment pH to 6-9, reaches discharge standard normal discharge；
In above-mentioned processing procedure, the mud of primary sedimentation basin and second-level settling pond bottom, which is delivered to by slush pump in slurry tank, to be stored up
Deposit, the Slurry Storage in slurry tank carries out press filtration to being delivered in filter press after a certain amount of, filter cake by solid waste standard into
Row management, filtrate return to level-one aeration tank circular treatment；In the above process, the exposure of level-one aeration tank and " S " type aeration tank bottom
Compressed air is passed through in feed channel, control compressed air pressure is 30-40KPa.
7. being handled using a kind of mining smelting wastewater exception water quality emergency treatment device as described in claims 1 or 2 or 3 abnormal
The method of water quality, it is characterised in that：When monitor waste water treatment system water-in and water-out water quality in fact, if COD or heavy metal in effluent quality
Or NH3- N indexs are not met《Copper, nickel, cobalt emission of industrial pollutants standard》GB25467-2010 emission limits, it will go out extremely
Water inputs in level-one aeration tank, and according to effluent quality exception type, according to claim 4 or 5 or 6 method carries out corresponding position
Reason.
8. a kind of side of mining smelting wastewater exception water quality emergency treatment device processing exception water quality according to claim 4
Method, it is characterised in that：The heavy metals removal agent is gone using the heavy metal of Changsha Sai Ensi Environmental Protection Technology Co., Ltd production
Except agent, it is a kind of mixture rich in iron ion, polyhydroxy, more carboxyl functional groups.
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Application publication date: 20181026 |