CN110255786A - A kind of processing system of bio-chemical effluent and processing method with the system - Google Patents
A kind of processing system of bio-chemical effluent and processing method with the system Download PDFInfo
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- CN110255786A CN110255786A CN201910632472.1A CN201910632472A CN110255786A CN 110255786 A CN110255786 A CN 110255786A CN 201910632472 A CN201910632472 A CN 201910632472A CN 110255786 A CN110255786 A CN 110255786A
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- 239000000126 substance Substances 0.000 title claims abstract description 61
- 238000012545 processing Methods 0.000 title claims abstract description 41
- 238000003672 processing method Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 239000002351 wastewater Substances 0.000 claims abstract description 55
- 239000012141 concentrate Substances 0.000 claims abstract description 53
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 53
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 52
- 239000005416 organic matter Substances 0.000 claims abstract description 44
- 238000002156 mixing Methods 0.000 claims abstract description 25
- 230000001112 coagulating effect Effects 0.000 claims abstract description 22
- 239000012535 impurity Substances 0.000 claims abstract description 22
- 238000001914 filtration Methods 0.000 claims abstract description 20
- 238000004062 sedimentation Methods 0.000 claims abstract description 19
- 238000001556 precipitation Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 48
- 239000008213 purified water Substances 0.000 claims description 33
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 18
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 17
- 239000007864 aqueous solution Substances 0.000 claims description 16
- 239000000701 coagulant Substances 0.000 claims description 16
- 238000005189 flocculation Methods 0.000 claims description 16
- 230000016615 flocculation Effects 0.000 claims description 16
- 230000001376 precipitating effect Effects 0.000 claims description 15
- 238000011084 recovery Methods 0.000 claims description 15
- 239000010802 sludge Substances 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 9
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 5
- 238000005868 electrolysis reaction Methods 0.000 claims description 5
- 229920002401 polyacrylamide Polymers 0.000 claims description 5
- 239000006228 supernatant Substances 0.000 claims description 5
- 238000005276 aerator Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000009738 saturating Methods 0.000 claims description 2
- 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 claims 1
- 230000015271 coagulation Effects 0.000 claims 1
- 238000005345 coagulation Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 32
- 230000000052 comparative effect Effects 0.000 description 20
- 230000000694 effects Effects 0.000 description 10
- 238000006555 catalytic reaction Methods 0.000 description 7
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- 230000002829 reductive effect Effects 0.000 description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 5
- 239000003513 alkali Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
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- 238000002474 experimental method Methods 0.000 description 4
- ULFQGKXWKFZMLH-UHFFFAOYSA-N iridium tantalum Chemical compound [Ta].[Ir] ULFQGKXWKFZMLH-UHFFFAOYSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000013618 particulate matter Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- LLQHSBBZNDXTIV-UHFFFAOYSA-N 6-[5-[[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]methyl]-4,5-dihydro-1,2-oxazol-3-yl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC1CC(=NO1)C1=CC2=C(NC(O2)=O)C=C1 LLQHSBBZNDXTIV-UHFFFAOYSA-N 0.000 description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 3
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 3
- MKYBYDHXWVHEJW-UHFFFAOYSA-N N-[1-oxo-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propan-2-yl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(C(C)NC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 MKYBYDHXWVHEJW-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 229910001424 calcium ion Inorganic materials 0.000 description 3
- CJTCBBYSPFAVFL-UHFFFAOYSA-N iridium ruthenium Chemical compound [Ru].[Ir] CJTCBBYSPFAVFL-UHFFFAOYSA-N 0.000 description 3
- 229910001425 magnesium ion Inorganic materials 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- -1 on the one hand Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
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- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
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- 239000000463 material Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- RCJVRSBWZCNNQT-UHFFFAOYSA-N dichloridooxygen Chemical compound ClOCl RCJVRSBWZCNNQT-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
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- 230000002000 scavenging effect Effects 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002699 waste material 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
- C02F1/001—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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- 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
- C02F2209/14—NH3-N
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
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)
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of processing system of bio-chemical effluent and with the processing method of the system, belongs to the technical field of bio-chemical effluent processing, solve and need that all waste water are pumped and passed through processing equipment, the low problem for the treatment of effeciency.Processing system includes S removal unit and organic matter removal unit, further includes the mixed cell being connected to SS removal unit and organic matter removal unit；SS removal unit includes the coagulative precipitation tank being sequentially communicated, multistage filtering unit, and organic matter removal unit is connected to multistage filtering unit, and multistage filtering unit successively includes primary filter unit, ultra filtration unit, reverse osmosis units；Processing method is the following steps are included: coagulating sedimentation, primary filter, ultrafiltration, reverse osmosis, impurity removal, organic matter removal, mixing.The present invention reduces processing water and improves processing target value simultaneously, improve treatment effeciency by the first concentrate of processing and the second concentrate.
Description
Technical field
The present invention relates to the technical field of bio-chemical effluent processing, the in particular to processing systems and utilization of a kind of bio-chemical effluent
The processing method of the system.
Background technique
With the development of industry and the promotion of environmental protection consciousness, the industrial enterprise such as chemical company, pharmacy corporation need
Further strengthen prevention and cure of pollution work.The waste water of these industrial enterprise's discharges refers to the sewage generated in industrial processes
And waste liquid, wherein containing the pollution generated in industrial production materials, intermediate product and the product and production process outflowed with water
Object.Current more economical reasonable sewage water treatment method is first to pre-process biochemical treatment again, after pretreatment and biochemical treatment
Waste water is bio-chemical effluent, but the concentration index of COD, SS in the bio-chemical effluent of the industrial enterprise in part, ammonia nitrogen can not reach
Local wastewater discharge standard (COD≤350, ammonia nitrogen≤35, pH=7-9) needs to carry out at further in-depth bio-chemical effluent
Reason.
Currently, in bio-chemical effluent COD and ammonia nitrogen processing method, frequently with Fenton process, class Fenton process, Ozone.It is existing
The suspension total particle SS in water outlet is removed in technology, using ozone and Fenton, in water outlet COD and ammonia nitrogen drop
Solution.When directly by the processing of all waste water progress COD and ammonia nitrogen, need to pump and pass through processing equipment, waste water for all waste water
When volume is big, treatment effeciency is low.
Summary of the invention
The purpose of the present invention is overcoming deficiency in the prior art, the first purpose of this invention is to provide a kind of biochemistry
The processing system of water outlet has achieved the effect that improve treatment effeciency.Second object of the present invention is that providing one kind applies to
The processing method of the processing system of bio-chemical effluent.
To realize above-mentioned first purpose, the present invention provides the following technical scheme that
A kind of processing system of bio-chemical effluent, including SS removal unit and organic matter removal unit further include and SS removal unit
The mixed cell being connected to organic matter removal unit；The SS removal unit includes the coagulative precipitation tank being sequentially communicated, multistage
Filter element, organic matter removal unit are connected to multistage filtering unit, and multistage filtering unit successively includes primary filter unit, surpasses
Filter unit, reverse osmosis units；Mixed cell is connected to reverse osmosis units and organic matter removal unit.
By adopting the above technical scheme, waste water is divided into two parts waste water, respectively passes through the clear liquid of multistage filtering unit, with
And the concentrate not being trapped by multistage filtering unit, concentrate are biggish by partial particulate after impurity-removing precipitating unit
Sludge filters out, by remaining concentrate be passed through in organic matter precipitation unit carry out COD and ammonia nitrogen degradation, after degradation with clear liquid into
Row mixing, realizes qualified discharge, while clear liquid can be with resource reusing.
Water declines in concentrate, but contains most organic matter and ammonia nitrogen in raw wastewater, on the one hand, organic matter
Removal unit water to be treated greatly reduces, and shortens the processing time.On the other hand, in the prior art, need COD and
Ammonia nitrogen is directly handled to discharge standard, but provided with the purified water after mixed cell, come out in clear liquid meeting organic matter removal unit
Dilution, COD and ammonia nitrogen concentration can decline and up to standard, and organic matter removal unit does not need directly will be at COD in concentrate and ammonia nitrogen
It manages to discharge standard；It by taking COD as an example, handles compared to from 1000mg/L to 350mg/L, degrades from 2000mg/L to 700mg/L,
The latter can be much easier, since it is desired that the processing costs reached is got higher, processing requirement is reduced, and common organic matter processing unit can
With processing.To sum up, from the processing water for reducing organic matter removal unit, and two aspects of processing requirement are reduced to improve biochemistry
The treatment effeciency of water outlet.
Coagulative precipitation tank removes part total hardness and pollution for carrying out mixing removal to the floccule body of bio-chemical effluent
Object；Primary filter unit carries out the removal of suspended material, microorganism and subparticle to the waste water after coagulating kinetics, surpasses
Filter unit filtration treatment liquid is purified, separated and is concentrated, reverse osmosis units by the dissolubility salinity in hyperfiltration treatment liquid with
And dissolubility COD removal；Impurity-removing precipitating unit carries out removal of impurities removal to the floccule body that liquid mixed liquor is concentrated by ultrafiltration.Electro-catalysis unit
Direct electrolytic oxidation, hydroxyl electrolytic oxidation and oxychloride are carried out for handling impurity-removing precipitating treatment fluid electro-catalysis, come the COD that degrades
And ammonia nitrogen pollutant.
Further preferably are as follows: the ultra filtration unit includes interconnected multi-ultrafiltration device and the first water producing tank, ultrafiltration
Film is pollution-resistant membrane；The reverse osmosis units include multi-stage reverse osmosis device and the second water producing tank.
By adopting the above technical scheme, water producing tank can play a buffering as a water pot for ultrafiltration and subsequent handling
Effect, improve multistage filtering unit entirety linkage；It can satisfy the emergency behaviour such as maintenance in short-term or technique switching simultaneously
Usage amount when making.Multi-ultrafiltration device is that multiple ultrafiltration apparatus are used in conjunction, and waste water can successively pass through multiple ultra-filtration process, thus
Improve cleanliness of the waste water after ultra filtration unit.
Multi-stage reverse osmosis device is to be connected to multiple reverse osmosis units, and waste water can be through excessive in multi-stage reverse osmosis device
It is secondary reverse osmosis, to improve cleanliness of the waste water after reverse osmosis units.Second water producing tank can be anti-as a water pot
Infiltration plays the role of a buffering with subsequent handling, improves the linkage of processing system entirety；It can satisfy and examine in short-term simultaneously
Repair or technique switching etc. emergency operations when usage amount.
Further preferably are as follows: the SS removal unit further includes being connected between reverse osmosis units and organic matter removal unit
Impurity-removing precipitating unit；The impurity-removing precipitating unit includes the removal of impurities pond being sequentially communicated and sedimentation basin, sedimentation basin include center pond,
The overflow weir for being set to center pond periphery and being connected to center pond top；Removal of impurities is provided with agitating device in pond.
By adopting the above technical scheme, it will be input in removal of impurities pond from the waste water retained in ultra filtration unit and reverse osmosis units,
And removal of impurities medicament (liquid alkaline, sodium carbonate) is added, it is held in the pH in removal of impurities pond between 8-8.5, on the other hand simultaneously
Calcium ion and magnesium ion are precipitated, the hardness of water is reduced.Reduce the particulate matter for entering organic matter removal unit.
Further preferably are as follows: the filter opening of the primary filter unit is 2-20 μm, and organic matter removal unit is using two dimension electricity
Catalytic unit.
By adopting the above technical scheme, primary filter unit is set to before ultrafiltration, first removes the biggish particulate matter of volume,
To protect ultrafiltration membrane, a possibility that ultrafiltration membrane filter opening is blocked and influences ultrafiltration membrance filter function is reduced.
Further preferably are as follows: the mixed cell is mixing pit, and the aerator for homogeneous is provided in mixing pit.
By adopting the above technical scheme, reverse osmosis clear liquid will be have passed through, mixed with the scavenging solution that have passed through electro-catalysis,
Emission request is reached, aerator is conducive to the mixing of waste water solution.It is mixed in electro-catalysis after-purification liquid with part clear liquid
In the case that index is up to standard afterwards, remaining clear liquid can be with recycling reuse.
Further preferably are as follows: the coagulative precipitation tank and impurity-removing precipitating unit are communicated with sludge collector unit.
By adopting the above technical scheme, sludge settling is concentrated, facilitates subsequent processing.
To realize above-mentioned second purpose, the present invention provides the following technical scheme that
A kind of processing method of the processing system with bio-chemical effluent, which comprises the following steps:
One: coagulating sedimentation: bio-chemical effluent is passed through into coagulative precipitation tank, and coagulant and flocculation aid is added, and it is heavy to obtain first
Shallow lake mud and supernatant effluent A, the first glar are passed through sludge collector unit；Coagulant goes out with bio-chemical effluent, flocculation aid and biochemistry
The mass parts ratio of water is (0.0005-0.01): 1；
Two: waste water A primary filter: being passed through to the waste water B obtained to primary filter unit by primary filter unit；
Three: ultrafiltration: waste water B is passed through to ultra filtration unit, the first concentrate being trapped and giving up by ultra filtration unit
Water C；
Four: reverse osmosis: waste water C being passed through to reverse osmosis units, the second concentrate for being trapped and passes through reverse osmosis list
The clear liquid X of member；
Five: impurity removal: the first concentrate and the second concentrate being passed through to removal of impurities pond, and cleaner is added, is filled by stirring
It after setting mixing, is passed through to sedimentation basin, obtains the second glar and waste water D, the second glar is passed through sludge collector unit；
Six: organic matter removal: waste water D is passed through to organic matter removal unit, the purified water Y after being purified；
Seven: mixing: purified water Y and clear liquid X being passed through in mixed cell and mixed, treated water Z is obtained；Clear liquid X is at least used and 2
Times identical amount of purified water Y is mixed with purified water Y；
The rate of recovery of multi-ultrafiltration device is 80-95% in three step；
The rate of recovery of reverse osmosis unit is 70-90% in the four steps.
By adopting the above technical scheme, bio-chemical effluent is divided into the clear liquid X by coagulating sedimentation, Multistage filtering device, and
By ultra filtration unit, the mixed liquor of the first concentrate that reverse osmosis units retain and the second concentrate；And it controls multistage in three steps
Biochemical waste water is divided into the clear liquid X and 14.5- of 59.5-85.5% by the rate of recovery of ultrafiltration apparatus and multi-stage reverse osmosis device
40.5% the first concentrate and the mixed liquor of the second concentrate.First concentrate and the second concentrate is successively hard by reducing
The first concentrate and second dense is effectively reduced in the impurity-removing precipitating unit of degree, and the organic matter removal unit of degradation COD and ammonia nitrogen
The COD and ammonia nitrogen of contracting liquid, are purified water Y.Purified water Y is mixed with clear liquid X finally, obtains treated water Z up to standard.
The processing method of the application all concentrates on all COD and ammonia nitrogen in the first concentrate and the second concentrate, and the
One concentrate and the second concentrate only have bio-chemical effluent total volume 14.5-40.5%；Under identical volume pumped, organic matter is gone
Except the processing of unit, compared with the prior art in need to handle 100% bio-chemical effluent, the application can be improved 2-7 times
Processing speed.Meanwhile in the prior art, the concentration of COD and ammonia nitrogen is small in bio-chemical effluent, is unable to fully utilize two-dimentional electro-catalysis
Device, and after improving concentration, the utilization rate of two-dimentional electrocatalysis device can be improved, reach energy-efficient effect, and improve processing effect
Rate.
On the other hand, due to the mixing of purified water Y and clear liquid X, meeting dilution and purification water Y is further decreased in purified water Y
The concentration index of COD and ammonia nitrogen, so organic matter removal unit does not need directly using the value up to standard of COD and ammonia nitrogen concentration as place
The target value of reason, but can be on value up to standard, after target value rises, so that organic matter removal unit is to COD and ammonia nitrogen
Removal is more easier.
The amount of clear liquid X accounts for a big chunk of total biochemical waste water, there is 59.5-85.5%, and COD and ammonia nitrogen concentrate about
2.4-6.9 again；It is found during practice, part bio-chemical effluent can be with by the processing method treated purified water Y
Value direct emission up to standard is directly reached, clear liquid X can whole recycling reuses；Purified water Y and part clear liquid X can also be mixed
It closes, to obtain treated water Z up to standard.
Further preferably are as follows: in a step, coagulant is the polyaluminum chloride aqueous solution that mass fraction is 5-15%,
Flocculation aid is the polyacrylamide solution that mass fraction is 0.1-0.5%；The pH value of coagulating basin passes through sodium hydrate aqueous solution
It is controlled in 8-8.5.
By adopting the above technical scheme, when pH being controlled in 8-8.5, the effect of coagulating sedimentation is best.
Further preferably are as follows: the cleaner in five step is at least one of sodium hydroxide and sodium carbonate, and is incited somebody to action
The pH of the first concentrate and the second concentrate is controlled in 8-8.5 in removal of impurities pond.
By adopting the above technical scheme, sodium hydrate aqueous solution, sodium carbonate pass through as pH adjusting agent and cleaner.PH is controlled
When being formed on 8-8.5, the sedimentation effect of calcium ion and magnesium ion is best, while the pH of the first concentrate and the second concentrate being controlled
In in reasonable range, it is suitble to discharge, and adjust pH again without subsequent.
Further preferably are as follows: in six step, the current density of two-dimentional electrolysis unit is 20-60mA/cm2, two dimension electricity
Solution device includes electrode plate, and the distance between electrode plate is 0.5-2cm.
By adopting the above technical scheme, it can be seen from the experiment that, when distance is located in range between current density and electrode plate, electricity
It is best to solve effect, it is good to the removal effect of COD and ammonia nitrogen.
In conclusion the invention has the following advantages:
1, part bio-chemical effluent is concentrated by multistage filtering unit, reduces organic matter removal unit water to be treated
Amount improves the treatment effeciency of organic matter removal device.
2, by mixing clear liquid X and purified water Y, the processing target value of organic matter removal unit can be reduced, it is difficult to reduce
Degree improves treatment effeciency.
3, by the pH of one step of control and five steps, coagulating sedimentation and impurity-eliminating effect are improved, while pH being controlled in
It is suitble in the range of discharge.
Detailed description of the invention
Fig. 1 is the structural block diagram of processing system；
Fig. 2 is the structural schematic diagram of two-dimentional electrocatalysis device；
Fig. 3 is the structural schematic diagram of Fig. 2 part-structure；
Fig. 4 is the structural schematic diagram of electric machine assembly.
Appended drawing reference: 1, SS removal unit；11, coagulative precipitation tank；2, multistage filtering unit；21, primary filter unit；
22, ultra filtration unit；23, reverse osmosis units；3, impurity-removing precipitating unit；4, two-dimentional electrocatalysis device；41, the second water inlet；42,
Two water outlets；5, second shell；51, the second cabinet；52, the second lid；53, subregion plate；54, zoneofoxidation；55, second exhaust
Pipe；6, electrode assembly；61, second plate plate；62, the second cathode plate；63, electrode plate；631, the first pole plate；632, the second pole
Plate；633, third pole plate；634, it is spaced pole plate；635, threaded rod；636, nut；64, block is pushed against；641, card slot；65, side plate；
7, guidance set；71, support plate；711, through-hole；72, plate is abutted；8, organic matter removal unit；9, mixed cell；10, sludge is received
Collect unit.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Embodiment 1: a kind of processing system of bio-chemical effluent, as shown in Figure 1, including the SS removal unit 1 set gradually, having
Machine object removal unit 81, and the mixed cell 9 being connected to SS removal unit 1 and organic matter removal unit 81, SS removal are single
Member 1 is also communicated with sludge collector unit 10.
SS removal unit 1 includes the coagulative precipitation tank 11 and multistage filtering unit 2 being sequentially communicated, and multistage filtering unit 2 wraps
Include the primary filter unit 21 being sequentially communicated, ultra filtration unit 22 and reverse osmosis units 23.Primary filter unit 21 is using security personnel's bag
Supernatant in coagulative precipitation tank 11 is passed through and is further filtered into primary filter unit 21 by formula filter, interception
Particulate matter.Ultra filtration unit 22 includes the multi-ultrafiltration device being sequentially communicated and the first water producing tank, and ultrafiltration membrane selects pollution-resistant membrane；Instead
Permeation unit 23 includes multi-stage reverse osmosis device and the second water producing tank, obtained clear liquid after reverse osmosis units 23 are discharged, into mixed
Unit 9 is closed, or part is subjected to recycling reuse.
Multistage filtering unit 2 further includes the impurity-removing precipitating unit 3 being connected to ultra filtration unit 22 and reverse osmosis units 23, not
Waste water by ultra filtration unit 22 and reverse osmosis units 23 is respectively the first concentrate and the second concentrate, the first concentrate and
Two concentrates enter impurity-removing precipitating unit 3.Impurity-removing precipitating unit 3 includes the removal of impurities pond being sequentially communicated and sedimentation basin, sedimentation basin packet
Include center pond, positioned at center pond periphery and with the overflow weir that is connected at the top of the pond of center.
Removal of impurities pond is not pumped to first by ultra filtration unit 22 and 23 waste water of reverse osmosis units, stirring dress is provided in the pond that cleans
It sets, in use, putting into liquid alkaline and sodium carbonate in removal of impurities pond, the pH of waste water in the pond that cleans on the one hand is adjusted to 8-8.5, it is another
Aspect precipitates the calcium ions and magnesium ions in water, reduces the hardness of water.Removal of impurities pond supernatant is passed through sedimentation basin, it will be useless in overflow weir
Water is pumped to organic matter removal unit 81, the glar retained in the glar and primary filter unit 21 in sedimentation basin,
It is pumped in sludge collector unit 10.
Organic matter removal unit 81 is purified water after being discharged, the clear liquid after being discharged with reverse osmosis units 23, single in mixing
Mixing in member 9；Mixed cell 9 is mixing pit, is provided with aerator in mixing pit, utilizes the homogeneous of liquid in mixing pit.
As shown in Fig. 2, organic matter removal unit is using two-dimentional electrocatalysis device 4.As shown in figure 3, two-dimentional electrocatalysis device 4
Including second shell 5, the electrode assembly being set in second shell 56, the guidance set 7 for contacting waste water with electrode assembly 6.
Second shell 5 includes the perforation of hollow and upper end and is in the second cabinet 51 of cuboid, is fixed on 51 upper surface of the second cabinet
Second lid 52 (referring to fig. 2) is fixed on two blocks of subregion plates 53 in the second cabinet 51 vertically, and the is communicated on the second cabinet 51
Two exhaust pipes 55 (referring to fig. 2) are communicated with the second water inlet 41 (referring to fig. 2) and the second water outlet 42 on the second cabinet 51.Point
Area's plate 53 divides the second cabinet 51 for three only zoneofoxidations 54 for being connected to of top, successively snakelike company between adjacent zoneofoxidation 54
It is logical.
An electrode assembly 6 is provided in each zoneofoxidation 54.As shown in figure 4, electrode assembly 6 includes vertical and interval is set
The second plate plate 61 and the second cathode plate 62 set, two blocks of side plates being set between second plate plate 61 and the second cathode plate 62
65, the electrode plate 63 between two blocks of side plates 65, the abutting block 64 for fixed plate electrode 63 are set to.Side plate 65 is connected to second
The outermost of anode plate 61 and the second cathode plate 62, second plate plate 61, the second cathode plate 62 and two blocks of side plates 65 are by electrode
Plate 63 surrounds.
Electrode plate 63 is arranged in parallel with side plate 65, and electrode plate 63 includes six piece first pole plate fixed with second plate plate 61
631, it and fixed six piece of second pole plate 632 of the second cathode plate 62, is set between adjacent first pole plate 631 and adjacent second
Third pole plate 633 between pole plate 632, the interval pole plate 634 being set between the first pole plate 631 and the second pole plate 632.
The distance between adjacent first pole plate 631 is equal, and the distance between adjacent second pole plate 632 is equal.First pole plate
631 and second pole plate 632 correspond, and be located along the same line, interval pole plate 634 coincides with the first pole plate 631 and second
The interval of two block gaps setting is provided on the line of pole plate 632, and between each group of the first pole plate 631 and the second pole plate 632
Pole plate 634, therefore share 12 block gap pole plates 634.The first pole plate 631 and interval pole plate are covered in the middle part of third pole plate 633
634, the interval between adjacent spaces pole plate 634, the second pole plate 632 and interval pole plate 634, interval pole plate 634 are covered in phase
The interval of adjacent third pole plate 633.
Electrode plate 63 is fixedly connected by pushing against block 64, is pushed against and is offered card slot 641 on block 64.Third pole plate 633
End position, be provided with five pieces of abutting blocks 64, push against 64 end face of block and be connected to adjacent first pole plate 631 or adjacent
Between pole plate 634 or adjacent second pole plate 632,633 end of third pole plate is opened in card slot 641.In third pole plate 633
Portion position is provided with five pieces of abutting blocks 64, pushes against 64 end face of block and is connected to adjacent third pole plate 633,631 end of the first pole plate
In portion or interval 634 end of pole plate or the clamping of 632 end of the second pole plate and card slot 641.
Level is equipped with same root threaded rod 635 between five abutting blocks 64 of same position, and 635 both ends of threaded rod are worn
To side plate 65, and it is threaded with nut 636, nut 636 is abutted with side plate 65.Second plate plate 61 and second plate plate
The connector connected to power supply there are two being respectively provided on 61.
As shown in figure 3, the electrode assembly 6 in each zoneofoxidation 54 is divided into three sections by guidance set 7 in the longitudinal direction, often
There are two guidance sets 7 for setting in a zoneofoxidation 54.Guidance set 7 include setting be fixed in zoneofoxidation 54 support plate 71,
The abutting plate 72 of setting is abutted with support plate 71, level offers the through-hole 711 that both ends penetrate through, through-hole 711 in support plate 71
Upside also penetrates through, and for installing electrode assembly 6, the side plate 65 of electrode assembly 6 is abutted with the vertical wall surface of through-hole 711；Support plate
71 upper surface flushes with 53 upper surface of subregion plate and is connected to 52 lower surface of the second lid.Abut 72 lower end surface of plate and side plate 65
Upper surface abuts, and abuts plate 72 and all cover through-hole 711 area of the through-hole 711 other than being used to install electrode assembly 6,
So that waste water can only pass through from electrode plate 63.It abuts and is bolted between plate 72 and support plate 71.
In the present embodiment, pushes against block 64, nut 636, threaded rod 635, side plate 65 and be made of insulating material.Multi-ultrafiltration
Device and multi-stage reverse osmosis device are all made of two-stage.
The implementation principle of the present embodiment are as follows: after original water outlet is by coagulative precipitation tank 11 and multistage filtering unit 2, obtain clear
Liquid；It is retained in the first concentrate and the second concentrate of ultra filtration unit 22 and reverse osmosis units 23, into impurity-removing precipitating list
The particulate matter of concentrate, is removed and is reduced waste water hardness, enter back into organic matter removal unit 81, utilize strong electrolytic oxidation by member 3
Degradation COD and ammonia nitrogen, are purified water；Finally clear liquid and purified water are mixed in mixed cell 9, qualified discharge, clearly
Liquid can directly recycling reuse.In two-dimentional electrocatalysis device 4, waste water gradually flows through the length side of electrode assembly 6 by through-hole 711
To the waste water passed through from through-hole 711 can be contacted in electrode plate 63, to realize electrolysis；Waste water is snakelike by three adjacent electricity
Pole component 6 is discharged finally by the second water outlet 42.
Embodiment 2: a kind of processing method of bio-chemical effluent, with processing system described in embodiment 1, including following step
Rapid: one: coagulating sedimentation: bio-chemical effluent is passed through into coagulative precipitation tank, and coagulant and flocculation aid is added, and obtains the first precipitating
Mud and supernatant effluent A, the first glar are passed through sludge collector unit.Coagulant is the aluminium polychloride that mass fraction is 5%
Aqueous solution, flocculation aid are the polyacrylamide solution that mass fraction is 0.1%；Coagulant and bio-chemical effluent, flocculation aid and life
The mass fraction for dissolving water is 0.0005:1.
Two: primary filter: being pumped to primary filter unit for waste water A, obtains the waste water B by primary filter unit；It protects
The filter opening for pacifying filter bag is 2 μm.
Three: ultrafiltration: being pumped to ultra filtration unit for waste water B, the first concentrate for being trapped and passes through ultra filtration unit
Waste water C；The rate of recovery of multi-ultrafiltration device is 80%.
Four: reverse osmosis: waste water C being pumped to reverse osmosis units, the second concentrate for being trapped and passes through reverse osmosis
The clear liquid X of saturating unit；The rate of recovery of multi-stage reverse osmosis device is 70%；Clear liquid X includes recycle-water M and clear liquid X, and recycle-water M is used
In recycling reuse.
Five: impurity removal: the first concentrate and the second concentrate being pumped to removal of impurities pond, and cleaner is added, by stirring
After mixing device mixing, it is passed through to sedimentation basin, obtains the second glar and waste water D, the second glar is pumped to sludge collector unit.
Cleaner is the sodium hydrate aqueous solution of mass fraction 10%.
Six: organic matter removal: waste water D being pumped to organic matter removal unit, hydraulic detention time 90min is obtained net
Purified water Y after change.
Seven: mixing: purified water Y being passed through in mixed cell with clear liquid X and is mixed, treated water Z is obtained；Purified water Y and complete
Portion clear liquid X mixing.
In the present embodiment: in six steps, current density 20mA/cm2The distance between electrode plate is 0.5cm, the second sun
Pole plate, the second cathode plate and electrode plate are titanium plate.
Embodiment 3: a kind of processing method of bio-chemical effluent, the difference from example 2 is that, in the present embodiment, a step
In, the mass fraction of coagulant and bio-chemical effluent, flocculation aid and bio-chemical effluent is 0.001:1；During one step, utilize
The pH of bio-chemical effluent is controlled in 8 by alkali tune agent, and alkali tune agent is the sodium hydrate aqueous solution that mass fraction is 10%.
In five steps, the pH of the first concentrate and the second concentrate is controlled in 8 using cleaner.
In six steps, current density 27mA/cm2The distance between electrode plate is 0.7cm, and second plate plate is plating ruthenium iridium
The titanium plate of coating, the dosage of ruthenium iridium coating layer are 10g/m2。
Embodiment 4: a kind of processing method of bio-chemical effluent, the difference with embodiment 3 is, in the present embodiment, a step
In, coagulant is the polyaluminum chloride aqueous solution that mass fraction is 8%, and flocculation aid is the polyacrylamide that mass fraction is 0.25%
Amine aqueous solution；The mass fraction of coagulant and bio-chemical effluent, flocculation aid and bio-chemical effluent is 0.005:1.Alkali tune agent is quality
The aqueous sodium carbonate that score is 25%.
In two steps, the filter opening for filter bag of ensuring public security is 8 μm；In three steps, the rate of recovery of multi-ultrafiltration device is 83%；Four
In step, the rate of recovery of multi-stage reverse osmosis device is 80%.
In five steps, cleaner use mass fraction for 25% aqueous sodium carbonate.
In six steps, current density 39mA/cm2The distance between electrode plate is 1cm, ruthenium iridium coating layer on second plate plate
Dosage be 25g/m2。
In seven steps, purified water Y is passed through in mixed cell with clear liquid X and is mixed, obtains treated water Z；Purified water Y and clear
The mass parts ratio of liquid X is 1:2.
Embodiment 5: a kind of processing method of bio-chemical effluent, the difference from example 2 is that, in the present embodiment, a step
In, coagulant is the polyaluminum chloride aqueous solution that mass fraction is 12%, and flocculation aid is the polypropylene that mass fraction is 0.36%
Amide aqueous solution；The mass fraction of coagulant and bio-chemical effluent, flocculation aid and bio-chemical effluent is 0.008:1.The mistake of one step
The pH of bio-chemical effluent is controlled in 8.5 using alkali tune agent by Cheng Zhong, alkali tune agent be mass fraction be 25% aqueous sodium carbonate,
The mixed solution for the sodium hydrate aqueous solution that mass fraction is 10%.
In two steps, the filter opening for filter bag of ensuring public security is 13 μm；In three steps, the rate of recovery of multi-ultrafiltration device is 86%；
In four steps, the rate of recovery of multi-stage reverse osmosis device is 82%.
In five steps, the pH of the first concentrate and the second concentrate is controlled in 8.5 using cleaner, cleaner uses matter
Measure score be 25% aqueous sodium carbonate, mass fraction be 10% sodium hydrate aqueous solution mixed solution.
In six steps, current density 52mA/cm2The distance between electrode plate is 1.6cm, and second plate plate is plating iridium tantalum
The titanium plate of coating, the dosage of iridium tantalum coating are 40g/m2。
In seven steps, purified water Y is passed through in mixed cell with clear liquid X and is mixed, obtains treated water Z；Purified water Y and clear
The mass parts ratio of liquid X is 1:2.4.
Embodiment 6: a kind of processing method of bio-chemical effluent, the difference with embodiment 5 is, in the present embodiment, a step
In, coagulant is the polyaluminum chloride aqueous solution that mass fraction is 15%, and flocculation aid is the polyacrylamide that mass fraction is 0.5%
Amine aqueous solution；The mass fraction of coagulant and bio-chemical effluent, flocculation aid and bio-chemical effluent is 0.01:1.
In two steps, the filter opening for filter bag of ensuring public security is 20 μm；In three steps, the rate of recovery of multi-ultrafiltration device is 95%；
In four steps, the rate of recovery of multi-stage reverse osmosis device is 90%.
In six steps, current density 60mA/cm2The distance between electrode plate is 2cm.
In seven steps, purified water Y is passed through in mixed cell with clear liquid X and is mixed, obtains treated water Z；Purified water Y and complete
Portion clear liquid X mixing.
Comparative example 1: the processing method of bio-chemical effluent, the difference with embodiment 5 are, save two to five steps and six steps
Suddenly, the waste water A generated in a step is pumped directly to the organic matter removal unit in six steps, obtains treated water Z.
Comparative example 2: the processing method of bio-chemical effluent, the difference with embodiment 5 are, six steps are replaced with Fenton oxygen
Change.Fenton oxidation step: it is pumped to Fenton pond after the first concentrate and the second concentrate are mixed, ferrous sulfate and quality is added
The aqueous hydrogen peroxide solution that score is 20%, is purified water Y.The mass parts ratio of hydrogen peroxide and COD be 1:0.1, iron from
Sub- molal weight and the molal weight of hydrogen peroxide ratio are 0.5:1.And clear liquid X is all mixed with purified water Y.
Comparative example 3: the processing method of bio-chemical effluent, the difference with embodiment 5 are, without two steps.
Comparative example 4: the processing method of bio-chemical effluent, the difference with embodiment 5 are, without three steps.
Comparative example 5: the processing method of bio-chemical effluent, the difference with embodiment 5 is, in step, current density 10mA/
cm2The distance between electrode plate is 0.2cm, and the dosage of iridium tantalum coating is 5g/m on second plate plate2。
Comparative example 6: the processing method of bio-chemical effluent, the difference with embodiment 5 is, in step, current density 70mA/
The distance between cm2 electrode plate is 5cm, and the dosage of iridium tantalum coating is 50g/m on second plate plate2。
Characterization experiment:
1, processing method is evaluated
Experimental subjects: embodiment 2-6 and comparative example 1-4, altogether 9 groups of laboratory samples.
Experimental method: Hangzhou bio-chemical effluent mixes more batches of waste water, and waste water is divided into 9 parts of 150m3, respectively
The processing method of corresponding embodiment 2-6 and comparative example 1-4 are handled, detect and record treated water Z COD and ammonia nitrogen it is dense
Spend index.
Experimental result: processing method evaluation experimental result record is as shown in table 1.
1 processing method evaluation experimental result of table record
Data analysis: by the data in table 1 it is found that the COD and ammonia nitrogen of embodiment 2-6 and comparative example 1, comparative example 3-4
The ammonia nitrogen concentration of concentration comparative example 2 up to standard is below standard.
And in comparative example 1-4, comparative example 1 reduces processing step, and pollutant concentration height influences electro-catalysis efficiency
Less, but be not concentrated, the waste water D for carrying out electro-catalysis is whole bio-chemical effluent amount, cause using electrolysis set
Standby increase, and then lead to the increase of investment cost and operating cost.Although the final the same energy of COD is up to standard in comparative example 2,
NH3-N cannot be up to standard, and produces more solid wastes.In comparative example 3, since preliminary filtering is not carried out before ultra filtration unit,
With the progress of ultrafiltration, ultrafiltration membrane blocking is serious, and specified value is not achieved in the rate of recovery of ultrafiltration apparatus, increase device maintenance at
This.In comparative example 4, due to not carrying out ultrafiltration before reverse osmosis units, with reverse osmosis progress, reverse osmosis membrane blocking is tight
Weight, and specified value is not achieved in the rate of recovery of reverse osmosis unit, increases device maintenance cost.
In embodiment 2-3, whole clear liquid X is mixed with purified water Y, extension rate is big, and in COD removal efficiency
In the case where stabilization, the Hu Sihou rate of multi-ultrafiltration device and multi-stage reverse osmosis device is low, the first concentrate and the second concentrate
Volume it is big so that the concentration of COD is low in purified water Y, so that the final COD concentration index decline effect of embodiment 2-3 is obvious.
2, influence of the two-dimentional electrocatalysis device setting parameter to wastewater treatment
Experimental subjects: embodiment 2-6 and comparative example 5-6, altogether 7 laboratory sample.
Experimental method: Hangzhou bio-chemical effluent mixes more batches of waste water, and waste water is divided into 7 parts of 150m3, respectively
The processing method of corresponding embodiment 2-6 and comparative example 5-6 are handled.It detects and records: bio-chemical effluent (test point is 1.)
COD concentration, ammonia nitrogen concentration, into two-dimentional electrocatalysis device before the COD concentration of waste water D (test point is 2.), ammonia nitrogen concentration；From two
Tie up COD concentration, the ammonia nitrogen concentration of the purified water Y (test point is 3.) of electrocatalysis device water outlet；Treated water Z's (test point is 4.)
COD concentration, ammonia nitrogen concentration；And two-dimentional electrocatalysis device is calculated to the removal rate of COD and ammonia nitrogen.
Experimental result: the experimental result of influence of the two-dimentional electrocatalysis device setting parameter to wastewater treatment is recorded such as 2 institute of table
Show.
Influence experimental result record of the two-dimentional electrocatalysis device setting parameter of table 2 to wastewater treatment
Data analysis: by the data of table 2 it is found that the COD of treated water Z and ammonia nitrogen concentration index in embodiment 2-6
To reach discharge standard, and COD concentration index cannot reach discharge standard in comparative example 5-6.
COD removal rate in embodiment 2-6 can achieve 55% or so, and ammonia nitrogen removal frank can achieve 95% or so；And
In the comparative example, COD removal rate can only achieve 35% hereinafter, ammonia nitrogen removal frank can only achieve 60% or so.
Above-mentioned specific embodiment is only explanation of the invention, is not limitation of the present invention, art technology
Personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as
All by the protection of Patent Law in scope of the presently claimed invention.
Claims (10)
1. a kind of processing system of bio-chemical effluent, including SS removal unit (1) and organic matter removal unit (8), which is characterized in that
It further include the mixed cell (9) being connected to SS removal unit (1) and organic matter removal unit (8)；The SS removal unit (1)
Including coagulative precipitation tank (11), the multistage filtering unit (2) being sequentially communicated, organic matter removal unit (8) and multistage filtering unit
(2) it is connected to, multistage filtering unit (2) successively includes primary filter unit (21), ultra filtration unit (22), reverse osmosis units (23)；
Mixed cell (9) is connected to reverse osmosis units (23) and organic matter removal unit (8).
2. a kind of processing system of bio-chemical effluent according to claim 1, which is characterized in that ultra filtration unit (22) packet
Interconnected multi-ultrafiltration device and the first water producing tank are included, ultrafiltration membrane is pollution-resistant membrane；The reverse osmosis units (23) include
Multi-stage reverse osmosis device and the second water producing tank.
3. a kind of processing system of bio-chemical effluent according to claim 1, which is characterized in that the SS removal unit (1)
It further include the impurity-removing precipitating unit (3) being connected between reverse osmosis units (23) and organic matter removal unit (8)；The removal of impurities is heavy
Shallow lake unit (3) includes the removal of impurities pond being sequentially communicated and sedimentation basin, and sedimentation basin includes center pond, is set to center pond periphery and in
The overflow weir being connected at the top of heart pond；Removal of impurities is provided with agitating device in pond.
4. a kind of processing system of bio-chemical effluent according to claim 1, which is characterized in that the primary filter unit
(21) filter opening is 2-20 μm, and organic matter removal unit (8) is using two-dimentional electrocatalysis device (4).
5. a kind of processing system of bio-chemical effluent according to claim 1, which is characterized in that the mixed cell (9) is
Mixing pit is provided with the aerator for homogeneous in mixing pit.
6. a kind of processing system of bio-chemical effluent according to claim 1, which is characterized in that the coagulative precipitation tank (11)
Sludge collector unit (10) are communicated with impurity-removing precipitating unit (3).
7. it is a kind of with claim 1-6 it is one of any described in bio-chemical effluent processing system processing method, which is characterized in that
The following steps are included:
One: coagulating sedimentation: bio-chemical effluent being passed through into coagulative precipitation tank (11), and coagulant and flocculation aid is added, and obtains
One glar and supernatant effluent A, the first glar are passed through sludge collector unit (10)；Coagulant and bio-chemical effluent, flocculation aid
Mass parts ratio with bio-chemical effluent is (0.0005-0.01): 1；
Two: primary filter: waste water A being passed through to primary filter unit (21), the waste water by primary filter unit (21) is obtained
B；
Three: ultrafiltration: waste water B being passed through the first concentrate being trapped to ultra filtration unit (22) and passes through ultra filtration unit
(22) waste water C；
Four: reverse osmosis: waste water C being passed through the second concentrate being trapped to reverse osmosis units (23) and passes through reverse osmosis
The clear liquid X of saturating unit (23)；
Five: impurity removal: the first concentrate and the second concentrate being passed through to removal of impurities pond, and cleaner is added, is filled by stirring
It after setting mixing, is passed through to sedimentation basin, obtains the second glar and waste water D, the second glar is passed through sludge collector unit (10)；
Six: organic matter removal: waste water D is passed through to organic matter removal unit (8), the purified water Y after being purified；
Seven: mixing: purified water Y and clear liquid X being passed through mixing in mixed cell (9), obtain treated water Z；Clear liquid X is at least used
Amount identical with 2 times of purified water Y is mixed with purified water Y；
The rate of recovery of multi-ultrafiltration device is 80-95% in three step；
The rate of recovery of reverse osmosis unit is 70-90% in the four steps.
8. a kind of processing method according to claim 7, which is characterized in that in a step, coagulant is quality point
Number is the polyaluminum chloride aqueous solution of 5-15%, and flocculation aid is the polyacrylamide solution that mass fraction is 0.1-0.5%；Coagulation
The pH value in pond is controlled in 8-8.5 by sodium hydrate aqueous solution.
9. a kind of processing method according to claim 7, which is characterized in that the cleaner in five step is hydroxide
At least one of sodium and sodium carbonate, and the pH of the first concentrate and the second concentrate in removal of impurities pond is controlled in 8-8.5.
10. a kind of processing method according to claim 7, which is characterized in that in six step, two-dimentional electrolysis unit
Current density is 20-60mA/cm2, two-dimentional electrolysis unit includes electrode plate, and the distance between electrode plate is 0.5-2cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910632472.1A CN110255786A (en) | 2019-07-13 | 2019-07-13 | A kind of processing system of bio-chemical effluent and processing method with the system |
Applications Claiming Priority (1)
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