CN110066046A - A kind of dephosphorization system and phosphorus removing method - Google Patents
A kind of dephosphorization system and phosphorus removing method Download PDFInfo
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- CN110066046A CN110066046A CN201910298326.XA CN201910298326A CN110066046A CN 110066046 A CN110066046 A CN 110066046A CN 201910298326 A CN201910298326 A CN 201910298326A CN 110066046 A CN110066046 A CN 110066046A
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- dephosphorization
- waste water
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 57
- 239000011574 phosphorus Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 87
- 239000002351 wastewater Substances 0.000 claims abstract description 80
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 230000003750 conditioning effect Effects 0.000 claims description 38
- 239000003153 chemical reaction reagent Substances 0.000 claims description 33
- 239000002253 acid Substances 0.000 claims description 19
- 239000003513 alkali Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 238000012360 testing method Methods 0.000 claims description 12
- 238000004062 sedimentation Methods 0.000 claims description 11
- DJFBJKSMACBYBD-UHFFFAOYSA-N phosphane;hydrate Chemical compound O.P DJFBJKSMACBYBD-UHFFFAOYSA-N 0.000 claims description 9
- 230000008676 import Effects 0.000 claims description 8
- 230000004308 accommodation Effects 0.000 claims description 7
- 239000002585 base Substances 0.000 claims description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 239000006228 supernatant Substances 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 description 11
- 238000012544 monitoring process Methods 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000003814 drug Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 230000003068 static effect Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 230000009123 feedback regulation Effects 0.000 description 3
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical group [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 3
- 239000010452 phosphate Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920011532 unplasticized polyvinyl chloride Polymers 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved 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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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)
- Removal Of Specific Substances (AREA)
Abstract
The present invention relates to technical field of waste water processing, and in particular to a kind of dephosphorization system and phosphorus removing method.Wherein, dephosphorization system includes: reaction tank, for carrying waste water to be processed；First dephosphorization apparatus, for carrying out a dephosphorization to the waste water in the reaction tank；Blowoff basin is connect with the reaction tank；At least one second dephosphorization apparatus, it is connect with the blowoff basin, for to do not met after detection discharge standard, waste water after a dephosphorization carry out secondary dephosphorization, or by do not met after detection discharge standard, the waste water after a dephosphorization be transmitted back to first dephosphorization apparatus and carry out secondary dephosphorization, until meeting discharge standard.Dephosphorization system of the invention can be such that the water finally discharged complies with standard.
Description
Technical field
The present invention relates to technical field of waste water processing, and in particular to a kind of dephosphorization system and phosphorus removing method.
Background technique
With the rapid development of phosphorus chemical industry, the environmental situation of generation is also got worse.Phosphorus-containing wastewater is to cause water
One of the main reason for body eutrophication, the discharge beyond standards for controlling phosphorus-containing wastewater are significant.
Dephosphorization technique mainly has biological phosphate-eliminating, ecological phosphorus removal and chemical dephosphorization, and biological phosphate-eliminating treatment effect is limited, and ecology is removed
Phosphorus need to occupy the land resource of large area, and chemical dephosphorization is because dephosphorization efficiency height is using wide.Chemical dephosphorization is thrown into sewage
Adding medicine forms insoluble phosphate with phosphorus reaction and is removed phosphorus from sewage by precipitating, air bearing or filtering.Dephosphorization agent
Adding is most important link in inlet method, and the quality of dosing effect directly affects the overall process of water process, very little coagulation effect
Fruit is bad, and water-borne glue body is not completely de- steady, and too many that steady phenomenon again occurs, not only Effects of Water Quality is deteriorated, but also wastes medicament.
Traditional dephosphorization dosing system cannot accurately add pharmaceutical quantities, and adding of agent excessively results in waste of resources or adds not
Foot influences effluent quality, and complicated for operation, and human cost is high, and parameter is single, can not real-time monitoring and feedback regulation.The prior art
It is middle to occur that the Dephosphorization reagent of corresponding amount be added according to the phosphorus content in waste water, can real-time monitoring and feedback regulation, from
And avoid dosing excessive or very few technological deficiency.But above-mentioned dephosphorization system still will appear the water finally discharged and not meet row
The case where putting standard.
Summary of the invention
Therefore, the technical problem to be solved in the present invention is that overcoming dephosphorization system in the prior art still will appear finally
The water of discharge does not meet the technological deficiency of discharge standard, to provide a kind of standard compliant dephosphorization system of the water that can make finally to discharge
System and phosphorus removing method.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows:
The present invention provides a kind of dephosphorization systems, comprising: reaction tank, for carrying waste water to be processed；First dephosphorization apparatus,
For carrying out a dephosphorization to the waste water in the reaction tank；Blowoff basin is connect with the reaction tank；At least one second dephosphorization
Device is connect with the blowoff basin, for do not met after detection discharge standard, waste water after a dephosphorization carry out secondary remove
Phosphorus, or by do not met after detection discharge standard, the waste water after a dephosphorization is transmitted back to first dephosphorization apparatus and carries out two
Secondary dephosphorization, until meeting discharge standard.
In above-mentioned dephosphorization system, the blowoff basin includes with the import of the outlet of the reaction tank, for will test
The water for not meeting discharge standard afterwards is transmitted back to first outlet that the reaction tank continues with and for meeting discharge after handling
The second outlet of the water direct emission of standard.
In above-mentioned dephosphorization system, second dephosphorization apparatus is the first outlet for connecting the blowoff basin and the reaction tank
Import delivery pipe.
In above-mentioned dephosphorization system, further include be set to it is between the reaction tank and the blowoff basin, for after to reaction
The sedimentation basin that is precipitated of mixing liquid.
It further include being connect with the reaction tank, for detecting the waste water into the reaction tank in above-mentioned dephosphorization system
Second monitor of phosphorus content.
It further include connecting with the blowoff basin, containing for detecting the water into the blowoff basin in above-mentioned dephosphorization system
The third monitor of phosphorus amount.
In above-mentioned dephosphorization system, first dephosphorization apparatus is Dephosphorization reagent tank, and the Dephosphorization reagent tank passes through third stream
Meter is connected to setting with the reaction tank.
It further include the conditioning tank with the setting of the inlet communication of the reaction tank in above-mentioned dephosphorization system, the delivery pipe is logical
The conditioning tank is crossed to be connected to the reaction tank.
It further include the acid-base accommodation device being connect with the conditioning tank in above-mentioned dephosphorization system.
In above-mentioned dephosphorization system, the acid-base accommodation device includes: the first monitor, connect, is used for the conditioning tank
Detect the pH value of waste water to be processed；Acid storage tank is connected to setting with the conditioning tank by second flowmeter；Alkali tank is stored up, by the
Flow meters are connected to setting with the conditioning tank.
The present invention also provides a kind of phosphorus removing methods, include the following steps:
The phosphorus content of waste water after dephosphorization is detected, it will be after a dephosphorization if testing result meets discharge standard
Water direct emission；Secondary dephosphorization is carried out to the waste water after a dephosphorization if testing result does not meet discharge standard, until symbol
Close discharge standard.
In above-mentioned phosphorus removing method, the step of dephosphorization and secondary dephosphorization, includes:
Detect the phosphorus content of waste water to be processed；
The Dephosphorization reagent of corresponding amount is put into waste water according to phosphorus content；
Precipitation and separation is carried out to the mixing liquid after reaction；
The phosphorus content of supernatant after detecting precipitation and separation.
It further include being detected to the pH value of waste water before detecting waste water phosphorus content to be processed in above-mentioned phosphorus removing method
Step carries out subsequent step if the pH value of waste water meets the requirements, if pH value is undesirable, carries out to the pH value of waste water
It adjusts.
Technical solution of the present invention has the advantages that
1. dephosphorization system provided by the invention, comprising: reaction tank, for carrying waste water to be processed；First dephosphorization apparatus is used
In to the waste water dephosphorization of progress in the reaction tank；Blowoff basin is connect with the reaction tank；At least one second dephosphorization dress
Set, connect with the blowoff basin, for do not met after detection discharge standard, waste water after a dephosphorization carry out secondary remove
Phosphorus, or by do not met after detection discharge standard, the waste water after a dephosphorization is transmitted back to first dephosphorization apparatus and carries out two
Secondary dephosphorization, until meeting discharge standard.Such structure design can be for not meeting the useless of discharge standard still after a dephosphorization
Water is reprocessed, and the water energy finally discharged is made enough to meet discharge standard, avoids the waste water still row of not meeting after a dephosphorization
The case where putting standard and waste water be discharged, causing environmental pollution.
2. dephosphorization system provided by the invention, the blowoff basin include and the import of the outlet of the reaction tank, use
The water that discharge standard is not met after it will test is transmitted back to first outlet that the reaction tank continues with and for after handling
Meet the second outlet of the water direct emission of discharge standard.Second dephosphorization apparatus is the first outlet for connecting the blowoff basin
With the delivery pipe of the import of the reaction tank.Such structure design can make not meeting discharge standard still after a dephosphorization
Water is transmitted back in reaction tank from first outlet and delivery pipe carries out the processing of dephosphorization again, until again by second after meeting discharge standard
Outlet discharge, such design increase by second or more dephosphorization equipment without additional, only need to be on a dephosphorization equipment basis
One delivery pipe of upper increase can realize retention and reprocessing to waste water not up to standard, and such design structure is simple, operates
It is convenient, cost is saved, occupied space is saved, improves convenience.
3. dephosphorization system provided by the invention, further include be set to it is between the reaction tank and the blowoff basin, be used for
The sedimentation basin that mixing liquid after reaction is precipitated.The design of sedimentation basin can make the liquid after reacting with Dephosphorization reagent
It is introduced into sedimentation basin and is precipitated, so that the insoluble phosphate after reaction be removed from sewage, make to enter in blowoff basin
It is the supernatant after dephosphorization, and then keeps the testing result of phosphorus content more acurrate.
4. dephosphorization system provided by the invention further includes connecting with the reaction tank, entering the reaction tank for detecting
In waste water phosphorus content the second monitor.The waste water that the design of second monitor may be implemented in on-line monitoring reaction tank is phosphorous
Amount, improves convenience.
5. dephosphorization system provided by the invention further includes connecting with the blowoff basin, entering the blowoff basin for detecting
In water phosphorus content third monitor.The water phosphorus content in on-line monitoring blowoff basin may be implemented in the design of third monitor,
Improve convenience.
6. dephosphorization system provided by the invention, first dephosphorization apparatus is Dephosphorization reagent tank, and the Dephosphorization reagent tank is logical
It crosses third flowmeter and is connected to setting with the reaction tank.Such design may be implemented to add Dephosphorization reagent online and according to waste water
Phosphorus content controls the dosage of Dephosphorization reagent, avoids adding of agent from excessively resulting in waste of resources or add insufficient dephosphorization insufficient,
Improve convenience.
7. dephosphorization system provided by the invention further includes the conditioning tank with the setting of the inlet communication of the reaction tank, described
Delivery pipe is connected to by the conditioning tank with the reaction tank.The design of conditioning tank can be such that phosphorus-containing wastewater is carrying out except phosphorus reaction
Before be introduced into the corresponding adjusting carried out before dephosphorization in conditioning tank, so that make phosphorus-containing wastewater and Dephosphorization reagent after adjusting reacts effect
Fruit is more preferable.
8. dephosphorization system provided by the invention further includes the acid-base accommodation device connecting with the conditioning tank.The soda acid
Regulating device includes: the first monitor, is connect with the conditioning tank, for detecting the pH value of waste water to be processed；Acid storage tank passes through
Second flowmeter is connected to setting with the conditioning tank；Alkali tank is stored up, setting is connected to the conditioning tank by first flowmeter.Soda acid
The on-line control of waste water soda acid may be implemented in the design of regulating device, the optimal pH until reaching dephosphorization agent reaction.It is such
The on-line control before reacting in phosphorus-containing wastewater with Dephosphorization reagent to phosphorus-containing wastewater soda acid may be implemented in structure design, makes phosphorus-containing wastewater
The optimal pH for reaching Dephosphorization reagent reaction, to improve phosphor-removing effect.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of dephosphorization system of the invention；
Description of symbols:
1- conditioning tank；2- reaction tank；3- sedimentation basin；4- blowoff basin；5- acid storage tank；6- stores up alkali tank；7- dephosphorization medicine
Agent tank；8- controller；9- first flowmeter；10- second flowmeter；11- third flowmeter；12- first is pumped；13-
Two pumps；14- valve；The first monitor of 15-；The second monitor of 16-；17- third monitor.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
Embodiment 1
As shown in Figure 1, present embodiments providing a kind of dephosphorization system, including reaction tank 2, the first dephosphorization apparatus, blowoff basin
4, the second dephosphorization apparatus.
In the present embodiment, reaction tank 2, for carrying waste water to be processed；First dephosphorization apparatus, for the reaction tank
Waste water in 2 carries out a dephosphorization；Blowoff basin 4 is connect with the reaction tank 2；Second dephosphorization apparatus connects with the blowoff basin 4
Connect, for do not met after detection discharge standard, waste water after a dephosphorization carry out secondary dephosphorization, or will be to not being inconsistent after detection
Close discharge standard, the waste water after a dephosphorization be transmitted back to first dephosphorization apparatus and carry out secondary dephosphorization, until meeting discharge
Standard.
In the present embodiment, the blowoff basin 4 includes with the import of the outlet of the reaction tank 2, for will test
The water for not meeting discharge standard afterwards is transmitted back to first outlet that the reaction tank 2 continues with and for meeting discharge after handling
The second outlet of the water direct emission of standard.It is provided with valve 14 at second outlet, the second pump 13 is provided at first outlet.Into
One step, second dephosphorization apparatus is the conveying of the first outlet for connecting the blowoff basin 4 and the import of the reaction tank 2
Pipe.Second pump 13 is set in delivery pipe.When not meeting discharge standard still after detecting into the liquid in blowoff basin 4, then open
The second pump 13 is opened, the liquid in blowoff basin 4 is transmitted back to reaction tank 2 from delivery pipe by first outlet and carries out secondary dephosphorization, until
Meet discharge standard；When meeting discharge standard after detecting into the liquid in blowoff basin 4, then directly arranged by second outlet
Out.
In the present embodiment, the reaction tank 2 is static mixer, and static mixer is tubular structure, material UPVC
(vinyl chloride monomer aggregated reaction and manufactured amorphous thermoplastic resin adds certain additive to form).
In the present embodiment, first dephosphorization apparatus is Dephosphorization reagent tank 7, and Dephosphorization reagent tank 7 is for accommodating dephosphorization medicine
Agent, the Dephosphorization reagent tank 7 are connected to setting with the reaction tank 2 by third flowmeter 11, i.e. third flowmeter 11 is set to
On the pipeline that Dephosphorization reagent tank 7 is connect with reaction tank 2, for measuring the flow of Dephosphorization reagent.The chemical feeding points of Dephosphorization reagent tank 7 with
The distance between static mixer is greater than 0.3 meter.
It in the present embodiment, further include being connect with the reaction tank 2, for detecting the waste water into the reaction tank 2
Second monitor 16 of phosphorus content.Second monitor 16 can carry out on-line measurement to the waste water phosphorus content in reaction tank 2, improve
Convenience.
It in the present embodiment, further include connecting with the blowoff basin 4, containing for detecting the water into the blowoff basin 4
The third monitor 17 of phosphorus amount, the third monitor 17 are set in blowoff basin 4.Third monitor 17 can be to blowoff basin 4
In liquid phosphorus content carry out on-line measurement, improve convenience.
In the present embodiment, further include be set to it is between the reaction tank 2 and the blowoff basin 4, for after to reaction
The sedimentation basin 3 that is precipitated of mixing liquid.I.e. blowoff basin 4 is connected to setting with reaction tank 2 by sedimentation basin 3, Dephosphorization reagent and
Waste water is introduced into sedimentation basin 3 after being sufficiently mixed reaction in reaction tank 2, and the supernatant after standing enters back into blowoff basin 4.
In the present embodiment, further include conditioning tank 1 with the setting of the inlet communication of the reaction tank 2, in the conditioning tank 1
Be provided with agitating device, the delivery pipe is connected to by the conditioning tank 1 with the reaction tank 2, i.e., conditioning tank 1, reaction tank 2,
Sedimentation basin 3, blowoff basin 4 are sequentially communicated setting, and the both ends of delivery pipe are connected to setting, the tune with blowoff basin 4 and conditioning tank 1 respectively
The first pump 12 is provided on the pipeline that section pond 1 is connect with the reaction tank 2.
Further, second monitor 16 is set on the pipeline that the conditioning tank 1 is connect with the reaction tank 2 simultaneously
Between first pump 12 and the reaction tank 2, second monitor 16 is used to monitor the total phosphorus content of waste water.
It in the present embodiment, further include the acid-base accommodation device being connect with the conditioning tank 1.
Further, the acid-base accommodation device includes: the first monitor, is connect with the conditioning tank 1, for detect to
Handle the pH value of waste water；Acid storage tank 5 is connected to setting with the conditioning tank 1 by second flowmeter 10；Alkali tank 6 is stored up, passes through first
Flowmeter 9 is connected to setting with the conditioning tank 1.After phosphorus-containing wastewater enters conditioning tank 1, detected by the first monitor 15 phosphorous useless
The pH value of water is then directly entered in reaction tank 2 if pH value reaches sets requirement；If pH value does not reach sets requirement, basis
Corresponding amount is added into conditioning tank 1 by the first flowmeter 9 of control storage alkali tank 6 or the second flowmeter 10 of acid storage tank 5 in demand
Alkali or acid, until reaching the pH value of setting.
In the present embodiment, acid storage tank 5, storage alkali tank 6, Dephosphorization reagent tank 7 are polyethylene material, and shape is rectangular, and
Equipped with blender.
It in the present embodiment, further include for controlling first monitor 15, second monitor 16, the third
Monitor 17, the first flowmeter 9, the second flowmeter 10, the third flowmeter 11 and the valve 14 PLC
Controller 8 (programmable logic controller (PLC)), to realize automatic monitoring and regulation.
Phosphorus-containing wastewater initially enters conditioning tank 1, is stirred by agitating device to phosphorus-containing wastewater, passes through the first monitor
15 measure the pH value of waste water in conditioning tank 1, feed back to controller 8, if pH value does not reach sets requirement, controller 8 passes through
The amount for determining and needing acid adding or adding alkali, the first flowmeter 9 of control storage alkali tank 6 or the second flowmeter 10 of acid storage tank 5 are calculated, to
A certain amount of alkali or acid are added in conditioning tank 1, the pH value until reaching setting, at this point, opening the first pump 12, the second monitor 16
The total phosphorus content that will test feeds back to controller 8, and controller 8 calculates the Dephosphorization reagent dosage needed by total phosphorus content,
The third flowmeter 11 of control Dephosphorization reagent tank 7 adds the Dephosphorization reagent of corresponding amount into reaction tank 2, and Dephosphorization reagent and waste water exist
Enter sedimentation basin 3 after being sufficiently mixed reaction in reaction tank 2, the supernatant after standing enters blowoff basin 4, passes through third monitor 17
Total phosphorus content in detection blowoff basin 4 does not meet discharge standard if phosphorus content is exceeded, is closed by 8 control valve 14 of controller
It closes, and the water in blowoff basin 4 is transmitted back to conditioning tank 1 and carries out secondary dephosphorization processing by the second pump 13 of unlatching, until meeting discharge mark
Until standard.
The on-line control of phosphorus-containing wastewater soda acid may be implemented in this dephosphorization system, the Optimal pH until reaching Dephosphorization reagent reaction
Value；Total phosphorus content in on-line monitoring water may be implemented, determine the optimum dosage of Dephosphorization reagent, avoid to add and excessively cause to provide
Source wastes or adds insufficient influence effluent quality；Wastewater effluent total phosphorus after dephosphorization can be recalculated and be fed back when not up to standard
Dephosphorization reagent dosage is adjusted, to realize more than the qualified discharge of waste water that one ensures again；Water quality can pass through controller 8 when not up to standard
The valve 14 for controlling blowoff basin 4 is closed, and water not up to standard is transmitted back to conditioning tank 1 and is reprocessed, and realizes cutting for waste water not up to standard
It stays and reprocesses；Dephosphorization reagent and the hybrid reaction of waste water carry out in static mixer, are sufficiently mixed the two, improve
Reaction efficiency；This dephosphorization system can the comprehensive monitoring of multi-parameter and feedback regulation, it is ensured that effluent quality is up to standard, the degree of automation
Height reduces human cost.
As alternative embodiment, the second dephosphorization apparatus can also be and reaction tank, the first dephosphorization apparatus and row
The identical device of the combination unit in pond.
As alternative embodiment, the second dephosphorization apparatus can also include the Dephosphorization reagent tank that is connect with blowoff basin with
And another blowoff basin being connect with blowoff basin.Certain second dephosphorization apparatus can also for it is concatenated two or more.
As alternative embodiment, the first dephosphorization apparatus can also be the dress for being able to carry out biological phosphate-eliminating or ecological phosphorus removal
It sets.
As alternative embodiment, waste water can also be removed by way of air bearing or filtering and is reacted with phosphorous medicament
The insoluble phosphate of generation.
As alternative embodiment, acid-base accommodation device can also only include acid storage tank or storage alkali tank.
Embodiment 2
A kind of phosphorus removing method is present embodiments provided, is included the following steps:
The pH value for detecting waste water first carries out subsequent step if the pH value of waste water meets the requirements, and wants if pH value is not met
It asks, then the pH value of waste water is adjusted by way of acid adding.Then containing for the satisfactory waste water to be processed of pH value is detected
Phosphorus amount；The Dephosphorization reagent of corresponding amount is put into waste water according to phosphorus content；Precipitation and separation is carried out to the mixing liquid after reaction；Inspection
The phosphorus content of supernatant after surveying precipitation and separation.The water after a dephosphorization is directly arranged if testing result meets discharge standard
It puts；Secondary dephosphorization is carried out to the waste water after a dephosphorization if testing result does not meet discharge standard, until meeting discharge standard.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (13)
1. a kind of dephosphorization system characterized by comprising
Reaction tank (2), for carrying waste water to be processed；
First dephosphorization apparatus, for carrying out a dephosphorization to the waste water in the reaction tank (2)；
Blowoff basin (4) is connect with the reaction tank (2)；
At least one second dephosphorization apparatus is connect with the blowoff basin (4), for do not met after detection discharge standard, one
Waste water after secondary dephosphorization carries out secondary dephosphorization, or by do not met after detection discharge standard, the waste water after a dephosphorization conveys
It returns first dephosphorization apparatus and carries out secondary dephosphorization, until meeting discharge standard.
2. dephosphorization system according to claim 1, which is characterized in that the blowoff basin (4) includes and the reaction tank (2)
Outlet import, for not meeting the water of discharge standard after will test be transmitted back to what the reaction tank (2) continued with
The second outlet of first outlet and the water direct emission for meeting discharge standard after handling.
3. dephosphorization system according to claim 2, which is characterized in that second dephosphorization apparatus is to connect the blowoff basin
(4) delivery pipe of the import of first outlet and the reaction tank (2).
4. dephosphorization system according to claim 1-3, which is characterized in that further include being set to the reaction tank
(2) between the blowoff basin (4), sedimentation basin (3) for being precipitated to the mixing liquid after reaction.
5. dephosphorization system according to claim 1, which is characterized in that further include connecting, with the reaction tank (2) for examining
Survey the second monitor (16) of the waste water phosphorus content entered in the reaction tank (2).
6. dephosphorization system according to claim 1, which is characterized in that further include connecting, with the blowoff basin (4) for examining
Survey the third monitor (17) of the water phosphorus content entered in the blowoff basin (4).
7. dephosphorization system according to claim 1, which is characterized in that first dephosphorization apparatus is Dephosphorization reagent tank (7),
The Dephosphorization reagent tank (7) is connected to setting with the reaction tank (2) by third flowmeter (11).
8. dephosphorization system according to claim 3, which is characterized in that further include the inlet communication with the reaction tank (2)
The conditioning tank (1) of setting, the delivery pipe are connected to by the conditioning tank (1) with the reaction tank (2).
9. dephosphorization system according to claim 8, which is characterized in that further include the soda acid being connect with the conditioning tank (1)
Regulating device.
10. dephosphorization system according to claim 9, which is characterized in that the acid-base accommodation device includes:
First monitor (15) is connect, for detecting the pH value of waste water to be processed with the conditioning tank (1)；
Acid storage tank (5) is connected to setting with the conditioning tank (1) by second flowmeter (10)；
It stores up alkali tank (6), setting is connected to the conditioning tank (1) by first flowmeter (9).
11. a kind of phosphorus removing method, which comprises the steps of:
The phosphorus content of waste water after dephosphorization is detected, by the water after a dephosphorization if testing result meets discharge standard
Direct emission；Secondary dephosphorization is carried out to the waste water after a dephosphorization if testing result does not meet discharge standard, until meeting row
Put standard.
12. phosphorus removing method according to claim 11, which is characterized in that the step of a dephosphorization and secondary dephosphorization
Include:
Detect the phosphorus content of waste water to be processed；
The Dephosphorization reagent of corresponding amount is put into waste water according to phosphorus content；
Precipitation and separation is carried out to the mixing liquid after reaction；
The phosphorus content of supernatant after detecting precipitation and separation.
13. phosphorus removing method according to claim 12, which is characterized in that before detecting waste water phosphorus content to be processed also
Include the steps that detecting the pH value of waste water, if the pH value of waste water meets the requirements, subsequent step is carried out, if pH value is not inconsistent
It closes and requires, then the pH value of waste water is adjusted.
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| CN201910298326.XA CN110066046A (en) | 2019-04-12 | 2019-04-12 | A kind of dephosphorization system and phosphorus removing method |
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