CN105884133A - Cold-rolling concentrated alkali wastewater treatment method and system - Google Patents
Cold-rolling concentrated alkali wastewater treatment method and system Download PDFInfo
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- CN105884133A CN105884133A CN201610307361.XA CN201610307361A CN105884133A CN 105884133 A CN105884133 A CN 105884133A CN 201610307361 A CN201610307361 A CN 201610307361A CN 105884133 A CN105884133 A CN 105884133A
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- 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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/66—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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Abstract
The invention provides a cold-rolling concentrated alkali wastewater treatment method and a system, wherein the treatment method comprises the following steps: carrying out pH value regulation on the concentrated alkali wastewater, adding a flocculating agent and a coagulant aid to treat the concentrated alkali wastewater, thereby obtaining a primary reaction system; treating the primary reaction system by utilizing a gas floating device, thereby obtaining gas floating residues and gas-floating outlet water clear liquid; cooling the gas floating outlet water clear liquid, and enabling the water temperature of the gas floating outlet water clear liquid to be 35 DEG C or below; treating refractory organic substances in the cooled gas floating outlet water clear liquid by utilizing a biological treatment unit, thereby obtaining biochemical outlet water; carrying out mud-water separation on the biochemical outlet water, thereby obtaining biochemical sludge and liquid supernatant; and filtering the liquid supernatant. The cold-rolling concentrated alkali wastewater treatment method provided by the invention realizes separate treatment of dilute alkali and concentrated alkali wastewater, and the concentrated alkali wastewater with relatively high conductivity is directly treated until emission up to standards; and the concentrated alkali wastewater is treated by combination of physical-chemical treatment and biological treatment, so that the cost is relatively low, and secondary pollution is avoided.
Description
Technical field
The invention belongs to steel industry view, relate to a kind of cold rolling concentrated base method of wastewater treatment and system.
Background technology
The concentrated base waste water that the rolling mill production line of steel plant produces, its water quality characteristics be strong basicity, high conductance,
Oil content is high, COD is high.Generally, when carrying out waste water and processing, this strand of concentrated base waste water can be with
Diluted alkaline waste water is incorporated as alkalescence oiliness sewage treatment, although concentrated base waste water shared water yield weight is little,
But occupying major pollutants weight, the water yield is big, pollution of intaking to cause whole Waste Water Treatment to design
Thing index is higher, technological process is more complicated.And when the water outlet after processing also has the demand of degree of depth reuse,
Because of this strand of electrical conductivity of water height, and being unfavorable for reuse, the choice requirement causing reclaiming system film is high.
Relative to dense, diluted alkaline waste water mixed processing, concentrated base waste water is separated, by system with diluted alkaline waste water
Process respectively, be waste water by during reuse demand more reasonably waste water processing station system form planning.One
The aspect concentrated base waste water water yield is little, and by its individual processing, the design scale of concentrated base Waste Water Treatment is not
Greatly, and this strand of waste water passes through economy, effectively processes means, and water outlet can be up to standard；On the other hand, dilute
The water inlet pollutant index of alkali waste water is relatively low but the water yield is relatively big, individual processing diluted alkaline waster water process flow process
Can shorten；And when waste water has reuse demand, diluted alkaline waste water is that whole waste water processes because electrical conductivity is low
The reuse water source standing optimal, it is to avoid concentrated base waste water is led because whole stock electrical conductivity of water raises after being incorporated to system
Cause the series of problems that reclaiming system pretreatment and film are selected to bring, therefore need a kind of individually pin badly
Processing method to concentrated base waste water.
Summary of the invention
It is an object of the invention to provide a kind of cold rolling concentrated base method of wastewater treatment and system, it is intended to seek
A kind of cost-effective process technique solves the process problem of cold rolling concentrated base waste water.
For solving above-mentioned technical problem, the technical scheme that the present invention provides is as follows:
The invention provides a kind of cold rolling concentrated base method of wastewater treatment, comprise the steps:
Step one: concentrated base waste water is carried out pH value regulation, is subsequently adding at flocculant and flocculation aid
Reason, obtains primary first-order equation system；
Step 2: utilize air-floating apparatus to process described primary first-order equation system, obtain air supporting slag and
Air supporting effluent clear solution；
Step 3: described air supporting effluent clear solution is carried out cooling process, makes the water temperature of air supporting effluent clear solution
Below 35 DEG C；
Step 4: utilize biological processing unit to the difficult degradation in the described air supporting effluent clear solution after cooling
Organic substance processes, and obtains bio-chemical effluent；
Step 5: described bio-chemical effluent is carried out mud-water separation, obtains biochemical sludge and supernatant；
Step 6: described supernatant is carried out filtration treatment.
Further, described step one specifically includes: by described concentrated base waste water at concentrated base wastewater equalization pond
After middle collection, introduce and pH regulator groove carries out pH value regulation, regulation pH value to 7.5-8.0.
Further, in described step 2, described air-floating apparatus includes two-stage air-floating apparatus, the first order
Air-floating apparatus is mechanical air flotation device, and second level air-floating apparatus is dissolved air flotation device, described the most anti-
Answer system to sequentially pass through described mechanical air flotation device and described dissolved air flotation device processes.
Further, described step 3 specifically includes: described air supporting effluent clear solution introduces sewage cooling
Tower carries out cooling process, makes the temperature of described air supporting effluent clear solution below 35 DEG C.
Further, in described step 4, described biological processing unit arranges dissolved oxygen meter to dissolved oxygen
Being monitored, and regulate aeration flow according to dissolved oxygen, control oxygen dissolving value is 2.0-5.0.
Further, the microorganism in described biological processing unit have passed through biological domestication before use,
Microorganism is made to can adapt to the concentrated base wastewater environment of high conductivity.
Further, described step 5 specifically includes: bio-chemical effluent introduces inclined-plate clarifying basin and carries out mud
Water separates, in separation supernatant to bio-chemical effluent pond.
Further, described processing method also includes step 7: by described air supporting slag and described biochemical dirt
Mud carries out sludge dewatering.
Further, in described step 7, utilize Stacked sludge dewatering machine to described air supporting slag and institute
State biochemical sludge and carry out sludge dewatering.
Further, described step one all uses DCS auto-programming control to the control process in step 6
System.
Present invention also offers a kind of cold rolling concentrated base Waste Water Treatment, including: concentrated base wastewater equalization pond,
PH regulator groove, air-floating apparatus, sewage cooling tower, biological processing unit, inclined-plate clarifying basin, filter；
Described concentrated base wastewater equalization pond collects the concentrated base waste water that rolling mill production line produces；
Described pH regulator groove is for being adjusted the pH value of concentrated base waste water, and at flocculant with help solidifying
Under the effect of agent, concentrated base waste water is processed, obtain primary first-order equation system；
Described primary first-order equation system is processed by described air-floating apparatus, obtains air supporting slag gentle emersion water
Clear liquid；
Described sewage cooling tower carries out cooling process to described air supporting effluent clear solution；
Described biological processing unit to cooling after air supporting effluent clear solution in hardly degraded organic substance at
Reason, obtains bio-chemical effluent；
Described inclined-plate clarifying basin carries out mud-water separation process to described bio-chemical effluent, obtain biochemical sludge and
Supernatant；
Described filter carries out filtration treatment to described supernatant.
Further, described processing system also includes spiral sludge dewatering machine, described overlapping screwed sludge dewatering equipment
Machine carries out sludge dewatering to described air supporting slag and described biochemical sludge.
Further, described air-floating apparatus includes mechanical air flotation device and dissolved air flotation device, described one
Secondary response system sequentially passes through described mechanical air flotation device and described dissolved air flotation device processes,
To the gentle floating effluent clear solution of air supporting slag.
Further, in described biological processing unit, it is provided with dissolved oxygen meter,
The oxygen dissolving value of reaction system in the described dissolved oxygen meter described biological processing unit of monitoring.
Compared with prior art, present invention have an advantage that
The one cold rolling concentrated base method of wastewater treatment that the present invention provides, can realize concentrated base waste water and directly process
To qualified discharge, it is not related to a series of follow-up with what other waste water merging treatment such as diluted alkaline, acidity brought
Problem, discharge standard meets existing " steel and iron industry pollution discharge standard " (GB13456-2012)
In table two require (water outlet COD < 50mg/L), the waste water after process can also be by arranging various removing
Salt equipment makes all kinds of recycle-water.The process of concentrated base waste water uses materializing strategy and biologic treating technique phase
In conjunction with, cost is relatively low, is not related to secondary pollution.The cold rolling concentrated base Waste Water Treatment that the present invention provides
Equipment and instrument that stable, needs are equipped with are less, and construction investment is low, and equipment automatization operates
Degree is high, and operation runs simplicity.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of a kind of cold rolling concentrated base method of wastewater treatment that the present invention provides；
Fig. 2 is the structural representation of a kind of cold rolling concentrated base Waste Water Treatment that the present invention provides.
Wherein, 1-concentrated base wastewater equalization pond；2-pH regulating tank；21-pH counts；3-air-floating apparatus；31-
Mechanical air flotation device；32-dissolved air flotation device；4-intermediate pool；5-sewage cooling tower；At 6-biology
Reason unit；61-dissolved oxygen meter；7-inclined-plate clarifying basin；8-bio-chemical effluent pond；9-filter.
Detailed description of the invention
The one cold rolling concentrated base waste water process side present invention proposed below in conjunction with the drawings and specific embodiments
Method and system are described in further detail.According to following explanation and claims, advantages of the present invention
Will be apparent from feature.It should be noted that, accompanying drawing all uses the form simplified very much and all uses non-essence
Accurate ratio, only in order to facilitate, to aid in illustrating lucidly the purpose of the embodiment of the present invention.
As shown in Figure 1-2, it is the technique stream of a kind of cold rolling concentrated base method of wastewater treatment that the present invention provides
Journey figure and system construction drawing, wherein, cold rolling concentrated base method of wastewater treatment comprises the steps:
Galvanizing, even move back etc. and to enter concentrated base waste water after the concentrated base waste water that rolling mill production line produces is collected and adjust
In joint pond 1, then by water pump, concentrated base waste water is sent in pH regulator groove 2, set in pH regulator groove 2
Having pH meter 21, add acid in pH regulator groove 2, regulation pH value is to 7.5-8.0, and adds coagulation
Waste water is processed by agent and flocculant, obtains primary first-order equation system；Wherein, coagulant and wadding are added
Solidifying agent can increase flco density, improve coagulating sedimentation effect, and the air-floating apparatus for next step processes useless
Water creates suitable flow condition；When regulating pH value, successively carry out two-stage pH tune by adding acid
Joint, the first order is coarse adjustment, and the second level is accurate adjustment, it is contemplated that flocculant PAC is faintly acid, therefore,
After the pH regulator of the second level, the pH value of waste water is preferably set to 7.5-8.0.
Above-mentioned primary first-order equation system being introduced in air-floating apparatus 3 and process, air-floating apparatus 3 includes machine
Tool air-floating apparatus 31 and dissolved air flotation device 32, described primary first-order equation system sequentially passes through mechanical air flotation
Device 31 and dissolved air flotation device 32, mechanical air flotation device 31 produces micro-bubble by aerator,
Dissolved air flotation device 32 produces micro-bubble, by the work of air-floating apparatus 3 by dissolving and air dissolved pump
With making air be attached on oil point and suspended particle with the micro-bubble form of high degree of dispersion, cause close
Degree, less than the state of water, utilizes law of buoyancy to make it float on the surface of the water, and the most most oil droplet etc. pollutes
Thing will be separated, and air supporting effluent clear solution then enters in intermediate pool 4；Height for concentrated base waste water
COD content, uses the pneumatically supported processing mode of two-stage so that the COD content of concentrated base waste water is notable
Reduce, it is ensured that the oil in alkaline waste water divides can fully be removed.The influent COD content of concentrated base waste water is general
At 3000-5000mg/L, after above-mentioned two-stage air-flotation process, the water outlet COD of air supporting effluent clear solution
Content typically can drop to below 1000mg/L, can alleviate the load that subsequent biochemical system processes.
Introduce in sewage cooling tower 5 by water pump by the air supporting effluent clear solution in above-mentioned intermediate pool 4
Row cooling processes, and makes water temperature drop to less than 35 DEG C, provides suitable temperature for subsequent biochemical system；
Air supporting effluent clear solution after above-mentioned cooling is introduced in biological processing unit 6, biological processing unit
The hardly degraded organic substance such as COD, petroleum-type is degraded by the microbes in 6.In processing procedure,
Need by the dissolved oxygen meter 61 arranged in biological processing unit 6, the dissolved oxygen of biochemical system to be monitored,
In control biological processing unit 6, the oxygen dissolving value of reaction system is in the range of 2.0-5.0.In order to make biology
Microorganism in processing unit 6 adapts to the concentrated base waste water of high conductivity, needs before use to microorganism
Carry out biological domestication.
Swash plate is introduced through above-mentioned waste water (i.e. bio-chemical effluent) after biological processing unit 6 processes
Sedimentation tank 7 carries out mud-water separation, obtains biochemical sludge and supernatant, wherein isolate supernatant certainly
It flow in bio-chemical effluent pond 8；
Above-mentioned air supporting slag and biological sludge may utilize device for dehydrating sladge waste and process, and carries out sludge dewatering, its
Middle device for dehydrating sladge waste selects Stacked sludge dewatering machine, this equipment and centrifugal dehydrator or filter press
Machine is compared, and is more suitable for the sludge dewatering treatment of the bigger air supporting slag of oil content, and equipment failure rate substantially drops
Low, after process, the moisture content of above-mentioned air supporting slag and biological sludge is below 80%.
Supernatant in bio-chemical effluent pond 8 is introduced in filter 9 by water pump and carries out final filtration,
The instruments such as water reuse transmissometer after filtration, COD detector, NH3-N detector, conductivity meter
The index of monitoring final outflow water, it is ensured that the waste water after filtration reaches discharge standard, discharge standard meets existing
There is table two requirement in " steel and iron industry pollution discharge standard " (GB13456-2012).
In whole process technique, when all of control process, such as concentrated base waste water carry out pH regulator
The control of the oxygen dissolving value in acid adding amount, biological processing unit, the process such as level chain in each pond of system
Control and the monitoring water quality of waste water after intermediate pool, final filtration is by DCS automatic program control.
Present invention also offers a kind of cold rolling concentrated base Waste Water Treatment, including: concentrated base wastewater equalization pond
1, pH regulator groove 2, air-floating apparatus 3, intermediate pool 4, sewage cooling tower 5, biological processing unit 6,
Inclined-plate clarifying basin 7, bio-chemical effluent pond 8, filter 9 and Stacked sludge dewatering machine (are not marked in the drawings
Note)；
Described concentrated base wastewater equalization pond 1 collects the concentrated base waste water that rolling mill production line produces；
Described pH regulator groove 2 is for being adjusted the pH value of concentrated base waste water, it is ensured that enter air supporting dress
Put the concentrated base pH value of waste water of 3 to adjust to neutrality；And under the effect of flocculant and flocculation aid, concentrated base is given up
Water processes, and obtains primary first-order equation system；
Described air-floating apparatus 3 includes mechanical air flotation device 31 and dissolved air flotation device 32, described once
Reaction system sequentially passes through described mechanical air flotation device 31 and described dissolved air flotation device 32 processes,
Obtaining the gentle floating effluent clear solution of air supporting slag, air supporting effluent clear solution is introduced in intermediate pool 4；
Described air supporting effluent clear solution in described intermediate pool 4 is lowered the temperature by described sewage cooling tower 5
Process, provide suitable temperature conditions for subsequent biochemical system；
Air supporting effluent clear solution after cooling is processed by described biological processing unit 6, degrades further
Hardly degraded organic substance in waste water, obtains bio-chemical effluent；
Described inclined-plate clarifying basin 7 carries out mud-water separation process to described bio-chemical effluent, obtains biochemical sludge
And supernatant, described supernatant flows in bio-chemical effluent pond 8；
Described filter 9 carries out filtration treatment to the described supernatant in described bio-chemical effluent pond 8, really
The turbidity value protecting water outlet is up to standard；
Described air supporting slag and described biochemical sludge are dehydrated by described spiral sludge dewatering machine, it is ensured that dirty
Mud moisture content is less than 80%, reduces sludge treatment cost.
Wherein, relevant instrumentation it is provided with in each device of described system:
Being provided with effusion meter in described concentrated base wastewater equalization pond 1 and intermediate pool 4, described effusion meter is supervised
Survey wastewater flow value, it is ensured that the inflow of each unit relative constancy；
Described pH regulator groove 2, intermediate pool 4 and bio-chemical effluent pond 8 are equipped with pH meter, described
PH meter monitoring pH value of waste water, the water outlet pH value of assist control pH regulator groove also detects follow-up air supporting
Water outlet, the pH value of final outflow water have N/R fluctuation, it is ensured that the pH value of the waste water after final filtration
Control in the range of 6-9；
The inlet and outlet pipe lines of described sewage cooling tower 5 is provided with thermometer, and the monitoring of described thermometer is described
The temperature value of the Inlet and outlet water of sewage cooling tower, it is ensured that the inflow temperature condition that subsequent biochemical processes；
Described biological processing unit 6 is provided with dissolved oxygen meter 61, and described dissolved oxygen meter 61 is monitored at described biology
The oxygen dissolving value of reason unit 6, and guarantee biochemical reaction optimum condition by adjusting aeration rate in time；
Set in the pond structures such as described concentrated base wastewater equalization pond 1, intermediate pool 4, bio-chemical effluent pond 8
Having liquidometer, the level value in each pond monitored by described liquidometer, participates in the interlocking with associated pump device and protects
Protect.
The one cold rolling concentrated base method of wastewater treatment that the present invention provides, can realize concentrated base waste water and directly process
To qualified discharge, it is not related to a series of follow-up with what other waste water merging treatment such as diluted alkaline, acidity brought
Problem, discharge standard meets existing " steel and iron industry pollution discharge standard " (GB13456-2012)
In table two require (water outlet COD < 50mg/L), the waste water after process can also be by arranging various removing
Salt equipment makes all kinds of recycle-water.The process of concentrated base waste water uses materializing strategy and biologic treating technique phase
In conjunction with, cost is relatively low, is not related to secondary pollution.The cold rolling concentrated base Waste Water Treatment that the present invention provides
Equipment and instrument that stable, needs are equipped with are less, and construction investment is low, and equipment automatization operates
Degree is high, and operation runs simplicity.
Foregoing description is only the description to present pre-ferred embodiments, not any to the scope of the invention
Limit, any change that the those of ordinary skill in field of the present invention does according to the disclosure above content, modification,
Belong to the protection domain of claims.
Claims (14)
1. a cold rolling concentrated base method of wastewater treatment, it is characterised in that comprise the steps:
Step one: concentrated base waste water is carried out pH value regulation, is subsequently adding at flocculant and flocculation aid
Reason, obtains primary first-order equation system；
Step 2: utilize air-floating apparatus to process described primary first-order equation system, obtain air supporting slag and
Air supporting effluent clear solution；
Step 3: described air supporting effluent clear solution is carried out cooling process, makes the water temperature of air supporting effluent clear solution
Below 35 DEG C；
Step 4: utilize biological processing unit to the difficult degradation in the described air supporting effluent clear solution after cooling
Organic substance processes, and obtains bio-chemical effluent；
Step 5: described bio-chemical effluent is carried out mud-water separation, obtains biochemical sludge and supernatant；
Step 6: described supernatant is carried out filtration treatment.
One the most according to claim 1 cold rolling concentrated base method of wastewater treatment, it is characterised in that
Described step one specifically includes: after being collected in concentrated base wastewater equalization pond by described concentrated base waste water, introduces
PH regulator groove carries out pH value regulation, regulation pH value to 7.5-8.0.
One the most according to claim 1 cold rolling concentrated base method of wastewater treatment, it is characterised in that
In described step 2, described air-floating apparatus includes that two-stage air-floating apparatus, first order air-floating apparatus are machinery
Air-floating apparatus, second level air-floating apparatus is dissolved air flotation device, and described primary first-order equation system sequentially passes through
Described mechanical air flotation device and described dissolved air flotation device process.
One the most according to claim 1 cold rolling concentrated base method of wastewater treatment, it is characterised in that
Described step 3 specifically includes: described air supporting effluent clear solution introducing sewage cooling tower is carried out cooling process,
Make the temperature of described air supporting effluent clear solution below 35 DEG C.
One the most according to claim 1 cold rolling concentrated base method of wastewater treatment, it is characterised in that
In described step 4, dissolved oxygen meter is set in described biological processing unit dissolved oxygen is monitored, and root
Regulating aeration flow according to dissolved oxygen, control oxygen dissolving value is 2.0-5.0.
One the most according to claim 1 cold rolling concentrated base method of wastewater treatment, it is characterised in that
Microorganism in described biological processing unit have passed through biological domestication before use, enables microorganism to fit
Answer the concentrated base wastewater environment of high conductivity.
One the most according to claim 1 cold rolling concentrated base method of wastewater treatment, it is characterised in that
Described step 5 specifically includes: described bio-chemical effluent introducing inclined-plate clarifying basin is carried out mud-water separation, point
In supernatant to bio-chemical effluent pond.
One the most according to claim 1 cold rolling concentrated base method of wastewater treatment, it is characterised in that
Also include step 7: described air supporting slag and described biochemical sludge are carried out sludge dewatering.
One the most according to claim 8 cold rolling concentrated base method of wastewater treatment, it is characterised in that
In described step 7, utilize Stacked sludge dewatering machine that described air supporting slag and described biochemical sludge are carried out
Sludge dewatering.
10. according to the one cold rolling concentrated base method of wastewater treatment described in any one of claim 1-9, its
Being characterised by, the control process in described step one to step 6 all uses DCS automatic program control.
11. 1 kinds of cold rolling concentrated base Waste Water Treatments, it is characterised in that including: concentrated base waste water regulates
Pond, pH regulator groove, air-floating apparatus, sewage cooling tower, biological processing unit, inclined-plate clarifying basin and mistake
Filter；
Described concentrated base wastewater equalization pond collects the concentrated base waste water that rolling mill production line produces；
Described pH regulator groove is for being adjusted the pH value of concentrated base waste water, and at flocculant with help solidifying
Under the effect of agent, concentrated base waste water is processed, obtain primary first-order equation system；
Described primary first-order equation system is processed by described air-floating apparatus, obtains air supporting slag gentle emersion water
Clear liquid；
Described sewage cooling tower carries out cooling process to described air supporting effluent clear solution；
Described biological processing unit to cooling after air supporting effluent clear solution in hardly degraded organic substance at
Reason, obtains bio-chemical effluent；
Described inclined-plate clarifying basin carries out mud-water separation process to described bio-chemical effluent, obtain biochemical sludge and
Supernatant；
Described filter carries out filtration treatment to described supernatant.
12. one according to claim 11 cold rolling concentrated base Waste Water Treatment, it is characterised in that
Also including spiral sludge dewatering machine, described spiral sludge dewatering machine is to described air supporting slag and described biochemical dirt
Mud carries out sludge dewatering.
13. one according to claim 11 cold rolling concentrated base Waste Water Treatment, it is characterised in that
Described air-floating apparatus includes mechanical air flotation device and dissolved air flotation device, and described primary first-order equation system is successively
Process through described mechanical air flotation device and described dissolved air flotation device, obtain air supporting slag and air supporting
Effluent clear solution.
14. one according to claim 11 cold rolling concentrated base Waste Water Treatment, it is characterised in that
It is provided with dissolved oxygen meter in described biological processing unit；
The oxygen dissolving value of reaction system in the described dissolved oxygen meter described biological processing unit of monitoring.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111056653A (en) * | 2019-12-13 | 2020-04-24 | 首钢京唐钢铁联合有限责任公司 | Cold rolling wastewater treatment system and method |
| WO2022078672A1 (en) * | 2020-10-16 | 2022-04-21 | Sms Group Gmbh | Method of treating a cooling circuit water contaminated with organic substances and inorganic particles |
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