CN106336078A - Chemical wastewater treatment system and chemical wastewater treatment method - Google Patents
Chemical wastewater treatment system and chemical wastewater treatment method Download PDFInfo
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- CN106336078A CN106336078A CN201610850798.8A CN201610850798A CN106336078A CN 106336078 A CN106336078 A CN 106336078A CN 201610850798 A CN201610850798 A CN 201610850798A CN 106336078 A CN106336078 A CN 106336078A
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- 239000000126 substance Substances 0.000 title claims abstract description 71
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 93
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 79
- 239000002351 wastewater Substances 0.000 claims abstract description 51
- 230000003647 oxidation Effects 0.000 claims abstract description 50
- 230000001105 regulatory effect Effects 0.000 claims abstract description 44
- 238000005345 coagulation Methods 0.000 claims abstract description 27
- 230000015271 coagulation Effects 0.000 claims abstract description 27
- 230000007062 hydrolysis Effects 0.000 claims abstract description 27
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 27
- 230000020477 pH reduction Effects 0.000 claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 26
- 238000004062 sedimentation Methods 0.000 claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- 239000010802 sludge Substances 0.000 claims description 45
- 230000001112 coagulating effect Effects 0.000 claims description 28
- 238000001556 precipitation Methods 0.000 claims description 25
- 238000005273 aeration Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 15
- 238000010992 reflux Methods 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 15
- 244000144992 flock Species 0.000 claims description 14
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 14
- 230000005484 gravity Effects 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 10
- 241000894006 Bacteria Species 0.000 claims description 8
- 239000000701 coagulant Substances 0.000 claims description 8
- 238000005189 flocculation Methods 0.000 claims description 8
- 230000016615 flocculation Effects 0.000 claims description 8
- 238000005188 flotation Methods 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000018044 dehydration Effects 0.000 claims description 6
- 238000006297 dehydration reaction Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 230000002906 microbiologic effect Effects 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 230000015556 catabolic process Effects 0.000 claims description 5
- 238000006731 degradation reaction Methods 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 206010002660 Anoxia Diseases 0.000 claims description 4
- 241000976983 Anoxia Species 0.000 claims description 4
- 206010021143 Hypoxia Diseases 0.000 claims description 4
- 230000007953 anoxia Effects 0.000 claims description 4
- 239000012141 concentrate Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 claims description 3
- 150000002894 organic compounds Chemical class 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 230000033228 biological regulation Effects 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 claims description 2
- 239000002912 waste gas Substances 0.000 claims description 2
- 230000003197 catalytic effect Effects 0.000 claims 1
- 239000002893 slag Substances 0.000 claims 1
- 150000003384 small molecules Chemical class 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 abstract 2
- 230000008569 process Effects 0.000 description 9
- 235000015097 nutrients Nutrition 0.000 description 6
- 230000000243 photosynthetic effect Effects 0.000 description 6
- 238000005276 aerator Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
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- 238000003672 processing method Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 239000000047 product Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
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- 230000007717 exclusion Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
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- 238000012797 qualification Methods 0.000 description 1
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- 150000003839 salts Chemical class 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—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
- C02F1/54—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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a chemical wastewater treatment system and a chemical wastewater treatment method. The chemical wastewater treatment system comprises a mixing and regulating tank 1, a coagulation and air floatation tank 5, a water distribution tank 6, a UASB anaerobic reactor 10, a vertical oxidation groove 16, a hydrolysis and acidification tank 20, a contact oxidation tank 24, a sedimentation tank 27, a reaction tank 30 and a coagulation and sedimentation tank 31 which are sequentially connected through a pipe, wherein effluent water of the mixing and regulating tank 1 is connected with a water inlet pipe of a regulating tank lift pump 4; a water outlet pipe of the regulating tank lift pump 4 is connected to the coagulation and air floatation tank 5; the effluent water of the coagulation and air floatation tank 5 is connected with the water distribution tank 6; the water outlet pipe of the water distribution tank 6 is connected to an anaerobic reactor water distribution device 11 in the UASB anaerobic reactor 10. In combination with requirements on water quality of chemical wastewater, the invention provides the chemical wastewater treatment system and the chemical wastewater treatment method, which are technically mature, reliable and safe, have high treatment efficiency and good effect, and is formed by optimizing and combining treatment units with low investment and low operation cost.
Description
Technical field
The present invention relates to technical field of waste water processing is and in particular to a kind of chemical wastewater treatment system and its processing method.
Background technology
Population in the world constantly increases, in order to meet the demand of people's daily life, chemical products and Chemical Manufacture ability tool
There is very important function and significance.But it is accompanied by the production of chemicals, chemical enterprise can produce with serious pollution useless in a large number
Water.Wastewater from chemical industry water-quality constituents is complicated, pollution concentration is higher, generally have certain toxicity and zest and administered suitable
Big difficulty, the pollution to environment is more serious.At home and abroad there are physical treatment process, chemistry using more processing method at present
Facture, physical-chemical process and biological treatment.With the development of chemical wastewater treatment technique, come using certain single technology
Process wastewater from chemical industry and can not reach target, more group technologies have gradually been applied to the process of such waste water.
Content of the invention
The purpose of the present invention is for the technological deficiency existing for above-mentioned chemical wastewater treatment, provides one kind can effectively improve
The chemical wastewater treatment system for the treatment of effect and its processing method.
The purpose of the present invention is achieved through the following technical solutions:
In a first aspect, the present invention relates to a kind of chemical wastewater treatment system, described system includes mixing regulating reservoir 1, coagulation
Flotation tank 5, distribution reservoir 6, uasb anaerobic reactor 10, vertical oxidation groove 16, hydrolysis acidification pool 20, contact-oxidation pool 24, precipitation
Pond 27, reaction tank 30 and coagulative precipitation tank 31；Mixing regulating reservoir 1 water outlet is connected with regulating reservoir elevator pump 4 water inlet pipe, and regulating reservoir carries
Rise pump 4 outlet pipe and be connected to coagulation floatation 5；Coagulation floatation 5 water outlet is connected with distribution reservoir 6, and distribution reservoir 6 outlet pipe is connected to uasb
Anaerobic reactor water-distributing device 11 in anaerobic reactor 10；In uasb anaerobic reactor 10 outlet pipe and vertical oxidation groove 16
Vertical oxidation groove water-distributing device 18 is connected, and vertical oxidation groove 16 outlet pipe is connected with hydrolysis acidification pool 20；Hydrolysis acidification pool 20 goes out
Water is connected with contact-oxidation pool 23；Contact-oxidation pool 23 water outlet is connected with sedimentation tank 27；Sedimentation tank 27 water outlet and reaction tank 30 phase
Even；Reaction tank 30 water outlet is connected with coagulative precipitation tank 31.
Preferably, described mixing regulating reservoir 1 includes regulating reservoir aeration airduct 2, the regulating reservoir being placed in mixing regulating reservoir 1 bottom
The regulating reservoir Aeration fan 3 of elevator pump 4 and peripheral hardware.Preferably, regulating reservoir aeration airduct 2 selects boring aeration pipe, regulating reservoir
Aeration fan 3 selects Roots blower.Enhance the regulating power of waste water, save occupation of land and construction investment.
Preferably, described distribution reservoir 6 includes being placed in the distribution reservoir elevator pump 7 of distribution reservoir 6 bottom, and distribution reservoir elevator pump 7 goes out
Water pipe is connected to described anaerobic reactor water-distributing device 11；Electromagnetic flowmeter 8 is installed on described distribution reservoir elevator pump 7 outlet conduit.
Preferably, described uasb anaerobic reactor 10 includes the anaerobic reactor water distribution being respectively provided with from bottom to top inside it
Device 11, big intermediate plate combined stuffing layer 12, suspension ball packing layer 13, three phase separator 14 and effluent weir, also include and three-phase separate
The steam-water separation tank 15 being connected from device 14 gas sampling pipe, and the anaerobic reactor being connected with anaerobic reactor water-distributing device 11
Reflux pump 9.
Preferably, described anaerobic reactor reflux pump 9 is by by Valve controlling reflux ratio, and control of reflux ratio is 1: 1～3
∶1.
Preferably, described vertical oxidation groove 16 includes being horizontally installed on the vertical oxygen of middle and upper part in vertical oxidation groove 16 side by side
Change groove distribution device 17, vertical oxidation groove water-distributing device 18, and be disposed longitudinally on some vertical oxygen in vertical oxidation groove 16
Change groove filler special 19.It is further preferred that described adjacent vertical oxidation trough filler installing space is 200mm.
Preferably, described hydrolysis acidification pool 20 includes being arranged on many curved surfaces blender 21 at hydrolysis acidification pool 20 middle part, big
Nutrient substance 1 throwing device 38 of intermediate plate filler 22 and peripheral hardware and nutrient substance 2 throwing device 39, described big intermediate plate filler 22 hangs
Hang in the middle part of hydrolysis acidification pool 20.
Preferably, the contact-oxidation pool aerator 24 that described contact-oxidation pool 23 includes arranging from bottom to top, combination are filled out
Material 25, and the peripheral hardware Aerobic Pond Aeration fan 26 connecing with aerator 24 pipe.
Preferably, the mud that described sedimentation tank 27 includes sedimentation tank central draft tube 28, clarifier sludge bucket and peripheral hardware returns
Stream pump 29, sedimentation tank 27 sludge part is back to vertical oxidation groove 16, and residual sludge pump is to sludge concentration tank 35.It is further preferred that institute
State clarifier sludge bucket cone bucket angle and be 57 °.
Preferably, described coagulative precipitation tank 31 includes coagulative precipitation tank central draft tube 32, coagulated sludge bucket, also wraps
Include sludge pump 33, pac throwing device 40 and the pam throwing device 41 of peripheral hardware；Coagulative precipitation tank 31 water outlet and monitoring pond 34 phase
Even, coagulative precipitation tank 31 mud passes through sludge pump 33 pump to sludge concentration tank 35.
Preferably, described pac throwing device 40 include coagulant dosing pump and coagulant molten with addition of medicine device；Described pam
Throwing device 41 include flocculation aid molten with addition of medicine device with two flocculation aid dosing pumps.
Preferably, described sludge concentration tank 35 includes mud membrane pump 36 and sludge filter press 37, mud clear liquid and mud
Filter press filtrate gravity flow enters mixing regulating reservoir 1 and again processes.
Second aspect, the invention still further relates to a kind of chemical wastewater treatment side being carried out using aforementioned chemical wastewater treatment system
Method, methods described comprises the steps:
S1, wastewater from chemical industry pass through grid, flow automatically to mixing regulating reservoir 1 and carry out Flow-rate adjustment, uniform water quality after removing impurity removing；
S2, enter the coagulation area of coagulation floatation 5 through waste water after uniform of Flow-rate adjustment, water quality, with the coagulant adding
Mix and react the tiny flock of formation, then mix with flocculation aid, tiny flock is assembled and forms big flock；Coagulation
Area's water outlet enters contact chamber, is fully contacted with dissolved air water and mixes, and the scum silica frost of formation is separated by flotation separation zone and excludes；
S3, the gravity flow of coagulation floatation 5 clear liquid enter distribution reservoir 6, by adding alkali and heating, adjust basicity and the temperature of waste water
Degree enters biochemical demand so as to meet；
S4, distribution reservoir 6 waste water pump to uasb anaerobic reactor 10, by anaerobic reactor water-distributing device 11 water distribution it is ensured that
The uniformity of water distribution and the utilization rate of pond appearance；Then using acid-producing bacteria and methane backeria, contained Organic substance in waste water is decomposed into
Small organic molecule, methane and carbon dioxide etc.；By the three phase separator 14 setting in uasb anaerobic reactor 10, mud returns
It flow to uasb anaerobic reactor 10 bottom, waste water rises to effluent weir discharge, the gas such as methane is collected by collection conduit and disposed
After discharge；
From flowing to vertical oxidation groove 16, by hanging, vertical oxidation groove psb is special to be filled out for s5, uasb anaerobic reactor 10 water outlet
Expect and add psb strain, and under aeration condition, significantly remove contained Organic substance in waste water；
S6, vertical oxidation groove 16 water outlet gravity flow enter hydrolysis acidification pool 20；In hydrolysis acidification pool 20, using hydrolysising microorganism
Under anoxic conditions, hardly degraded organic substance is degraded to labile organic compound, larger molecular organicses are decomposed into small organic molecule；
S7, hydrolysis acidification pool 20 water outlet enter contact-oxidation pool 24；In contact-oxidation pool 24, exposed using aerobic microbiological
Under the conditions of gas, contained residual organic substances in waste water are degraded to carbon dioxide and water further；
S8, contact-oxidation pool 24 water outlet gravity flow enter sedimentation tank 27；By gravitational settling, mud-water separation；Sludge part returns
It flow to vertical oxidation groove 16, clear liquid enters reaction tank 30；
S9, in reaction tank 30 by adding pac and pam, by the suspended state organic substance in waste water, colloidal organic substances matter
Form flock；
S10, reaction tank 30 water outlet enter coagulative precipitation tank 31；In the settling zone of coagulative precipitation tank 31, sunk by gravity
Fall, flock is settled removal, and sludge pump is to sludge concentration tank 35；Coagulative precipitation tank 31 standard emission of clear.
Preferably, in step s2, separate, through flotation separation zone pulp water, the scum silica frost excluding and flow automatically to mud through air supporting body refuse groove
Concentration basin, concentrates the supernatant being formed and is back to mixing regulating reservoir 1, the mud after concentration is formed at mud cake outward transport through mechanical dehydration
Put, the filtrate that described dehydration is formed is back to mixing regulating reservoir 1.
Preferably, control the temperature of waste water at 35 ± 2 DEG C in described distribution reservoir 6, maintain anaeration in normal temperature.Ensure the micro- life of anaerobism
The high activity of thing, the pond reducing follow-up anaerobic reactor holds thus reducing investment.
Preferably, in step s6, described vertical oxidation groove 16 regular replenishment adds photosynthetic bacteria.
Preferably, in step s7, described hydrolysis acidification pool 20 utilizes mixotroph degradation of organic substances under anoxic conditions；
Described anoxia condition controls d0≤0.5ppm.
Preferably, in step s8, described contact-oxidation pool 24 utilizes aerobic microbiological degradation of organic substances under aerobic condition；
Described aerobic condition controls d0 >=2.0ppm, contact-oxidation pool sv30 >=30%, and return current ratio of the mixed liquid controls 1: 1～3: 1.
Preferably, in step s10, described coagulant is aluminium polychlorid, and described flocculation aid is high molecular pam.
Compared with prior art, the invention has the following beneficial effects:
1) present invention adopts materialization+biochemistry+materialization combined treatment process, and process effluent quality is good, stable；Waste water has
The degraded of machine thing mainly utilizes the biochemical reaction effect of microorganism, and operating cost is low compared with materialization and advanced oxidization method, produces danger
Useless also less.
2) mixing regulating reservoir setting air stirrer, strengthens the regulating power of waste water, saves occupation of land and construction investment.
3) pretreatment adopts coagulation air-float technique, removes oils and non-solubility organic matter in waste water, reduces and subsequently gives birth to
The reaction time changed.
4) biochemistry adopts uasb+ vertical oxidation groove+hydrolysis acidification+contact-oxidation pool group technology, makes full use of anaerobism micro-
The microorganisms such as biology, facultative microbe and aerobic microbiological different feature of activity under different cod concentration, makes each microorganism
Can survive under its optimal conditions, the clearance of cod is greatly improved.
5) it is provided with distribution reservoir before uasb water inlet, controls the conditions such as temperature, the basicity of uasb water inlet, optimizing flow condition makes
It controls in anaeration in normal temperature area, is held with the pond reducing uasb and invests.
6) uasb is provided with external circulating system, on the one hand can effectively alleviate the fluctuation impact of influent waste water, stablize waste water
Treatment effect, effectively reduces investment and reduces operating cost；On the other hand the upflow velocity of uasb can be controlled, to anaerobic reactor
Mud selected, retain highly active mud, the more conventional uasb of therefore this uasb has higher process load.
7) biochemical rear end is additionally arranged coagulative precipitation tank it is ensured that the process qualified discharge of waste water.
8) anti impulsion load of the present invention is strong, stable effluent quality, and operation management is simple, and the sludge quantity of generation is few.
Brief description
By reading the detailed description with reference to the following drawings, the other features, objects and advantages of the present invention will become more
Obvious:
Fig. 1 is the structural representation of the chemical wastewater treatment system of the present invention；
Wherein, 1 is mixing regulating reservoir, and 2 is regulating reservoir aeration airduct, and 3 is regulating reservoir Aeration fan, and 4 is regulating reservoir lifting
Pump, 5 is coagulation floatation, and 6 is distribution reservoir, and 7 is distribution reservoir elevator pump, and 8 is electromagnetic flowmeter, and 9 is anaerobic reactor reflux pump,
10 is uasb anaerobic reactor, and 11 is anaerobic reactor water-distributing device, and 12 is big intermediate plate combined stuffing layer, and 13 is suspension ball filler
Layer, 14 is three phase separator, and 15 is steam-water separation tank, and 16 is vertical oxidation groove, and 17 is vertical oxidation groove distribution device, and 18 is vertical
Formula oxidation trough water-distributing device, 19 is vertical oxidation groove filler special, and 20 is hydrolysis acidification pool, and 21 is many curved surfaces blender, and 22 are
Big intermediate plate filler, 23 is contact-oxidation pool, and 24 is contact-oxidation pool aerator, and 25 is combined stuffing, and 26 is Aerobic Pond aeration
Blower fan, 27 is sedimentation tank, and 28 is sedimentation tank central draft tube, and 29 is sludge reflux pump, and 30 is reaction tank, and 31 is coagulating sedimentation
Pond, 32 be coagulative precipitation tank central draft tube, 33 be sludge pump, 34 be monitoring pond, 35 be sludge concentration tank, 36 be mud every
Membrane pump, 37 is sludge filter press, and 38 is nutrient substance 1 throwing device, and 39 is nutrient substance 2 throwing device, and 40 add dress for pac
Put, 41 is pam throwing device.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, some deformation can also be made and improve.These broadly fall into the present invention
Protection domain.
Embodiment
The present embodiment is related to a kind of chemical wastewater treatment system, and its structural representation is as shown in Figure 1.The chemical industry of the present invention gives up
Water treatment system include mix regulating reservoir 1, exclusive removing waste water contained by float and non-solubility material coagulation floatation 5,
Exclusive regulation enters the distribution reservoir 6 of anaerobism water quality and quantity, the exclusive uasb anaerobic reaction removing most of Organic substance contained by waste water
Device 10, the exclusive vertical oxidation groove 16 removing wastewater through organic matter further, the hydrolysis acidification pool being specific to raising wastewater biochemical
20th, the contact-oxidation pool 24 being specific to degradation of organic substances, the sedimentation tank 27 being specific to mud-water separation, it is specific to the anti-of coagulating
Answer pond 30, be specific to the coagulative precipitation tank 31 of materialized mud mud-water separation, be specific to the monitoring pond 34 of discharge, be specific to mud weight
Sludge-tank 35 and expected supporting equipment that power concentrates.
Influent waste water pipeline is connected with mixing regulating reservoir 1, and regulating reservoir aeration airduct 2 is placed in mixing regulating reservoir bottom, adjusts
Pond Aeration fan 3 is placed in Ventilator Room, and mixing regulating reservoir 1 water outlet is connected with regulating reservoir elevator pump 4 water inlet pipe.Wastewater from chemical industry passes through
Grid, flow automatically to after removing impurity removing mixing regulating reservoir 1, mixing regulating reservoir 1 water is adjusted with flow and uniform water quality it is ensured that
The water stabilization, the water yield that enter subsequent treatment facility are constant.
Regulating reservoir elevator pump 4 outlet pipe is connected to coagulation floatation 5, by sending out with dosing coagulant, flocculation aid and liquid caustic soda
Raw coagulating.Coagulating is by compression double electric layer, bridge formation, absorption and the net effect of catching etc., and the suspended state in waste water is had
Machine material, colloidal organic substances matter form flock.Described coagulant is the aggretion type coagulant of aluminum；Described flocculation aid is macromolecule
Amount pam.Specifically, through Flow-rate adjustment, water quality, the waste water after uniform enters the coagulation area of coagulation floatation 5, mixed with add
Solidifying agent mixes and reacts the tiny flock of formation, then mixes with flocculation aid, tiny flock is assembled and forms big flock；
The water outlet of coagulation area enters contact chamber, is fully contacted with dissolved air water and mixes, and the scum silica frost of formation is separated by flotation separation zone to be skimmed
Remove；Coagulation floatation 5 water outlet is connected with distribution reservoir 6.Separate the scum silica frost excluding through flotation separation zone pulp water through air supporting body refuse groove certainly
Flow to sludge concentration tank, concentrate the supernatant being formed and be back to mixing regulating reservoir 1, the mud after concentration forms mud cake through mechanical dehydration
Outward transport is disposed, and the filtrate that described dehydration is formed is back to mixing regulating reservoir 1.
Distribution reservoir 6 water outlet is connected with distribution reservoir elevator pump 7, and distribution reservoir elevator pump 7 outlet conduit is installed electromagnetic flowmeter
8, outlet pipe is connected to anaerobic reactor water-distributing device 11.In distribution reservoir 6, control the alkali of waste water by steam heating and piece alkali
Degree, so as to control temperature in waste water at 35 ± 2 DEG C, maintains the optimum range of anaeration in normal temperature；Ensure that the high of anaerobe is lived
Property, the pond reducing follow-up anaerobic reactor holds thus reducing investment.Specifically, coagulation floatation 5 clear liquid gravity flow enters water distribution
Pond 6, by adding alkali and heating, adjusts the basicity of waste water and temperature enters biochemical demand so as to meet.
It is respectively provided with anaerobic reactor water-distributing device 11 from bottom to top, the combination of big intermediate plate is filled out inside uasb anaerobic reactor 10
The bed of material 12, suspension ball packing layer 13, three phase separator 14, the soda pop also including being connected with three phase separator 14 gas sampling pipe is divided
From tank 15；Utilize anaerobic reactor reflux pump 9 (anaerobic reactor reflux pump 9 outlet and anaerobic reactor water-distributing device 11 simultaneously
It is connected) control the upflow velocity of uasb to reach the purpose screening mud.Distribution reservoir 6 waste water pump to uasb anaerobic reactor 10,
Through anaerobic reactor water-distributing device 11 water distribution uniformity it is ensured that the utilization rate held of the uniformity of water distribution and pond；With current
Rise and inversely contact with anaerobic sludge layer, be then passed through big intermediate plate combined stuffing layer 12 and suspension ball packing layer 13, using product
Contained Organic substance in waste water is decomposed into small organic molecule, methane and carbon dioxide etc. by sour bacterium and methane backeria；Anaerobism is dirty
Mud settles in three phase separator, and to uasb anaerobic reactor 10 bottom, waste water rises to effluent weir exclusion to sludge reflux, produces
Waste gas (methane etc.) pass through gas sampling pipeline to steam-water separation tank 15.Uasb anaerobic reactor 10 outlet pipe and vertical oxidation
Groove water-distributing device 18 is connected.
Vertical oxidation groove 16 includes vertical oxidation groove distribution device 17, vertical oxidation groove water-distributing device 18 and vertical oxidation
Groove filler special 19；Vertical oxidation groove 16 outlet pipe is connected with hydrolysis acidification pool 20.Vertical oxidation groove 16 must periodically be added
Photosynthetic bacteria, photosynthetic bacteria has the antibacterial of certain color because having photosynthetic pigments.The feature of photosynthetic bacteria be salt tolerant high,
Resistance to organic concentration is high, all can survive under conditions of anaerobic and aerobic.It can bear higher concentration of wastewater, can make high concentration
Organic substance in the presence of photosynthetic bacteria group fast decoupled, thus reach degraded codcrPurpose.Specifically, in vertical oxidation
In groove 16, by hanging vertical oxidation groove psb filler special and adding psb strain, and under aeration condition, significantly remove waste water
In contained Organic substance.
Hydrolysis acidification pool 20 includes many curved surfaces blender 21, big intermediate plate filler 22, nutrient substance 1 throwing device 38 and nutrition
Material 2 throwing device 39；Hydrolysis acidification pool 20 water outlet is connected with contact-oxidation pool 23.Vertical oxidation groove 16 water outlet gravity flow enters water
Solution acidification pool 20, utilize in hydrolysis acidification pool 20 hydrolysising microorganism anoxia condition (described anoxia condition control d0≤
Under 0.5ppm), hardly degraded organic substance is degraded to labile organic compound, larger molecular organicses are decomposed into the work of small organic molecule
With improving the biodegradability of waste water；Reduce the throwing of wastewater treatment using the utilization rate of tank volume of many curved surfaces blender 21 the advantages of high
Money；Nutrient substance must periodically be added due to the imbalance of waste water nutritive proportion makes its follow-up biochemical energy continuous and effective run.
Contact-oxidation pool 23 includes contact-oxidation pool aerator 24, the combined stuffing 25, Yi Jiyu arranging from bottom to top
The peripheral hardware Aerobic Pond Aeration fan 26 that aerator 24 pipe connects, contact-oxidation pool 23 water outlet is connected with sedimentation tank 27.Hydrolysis acidification
Pond 20 water outlet enters contact-oxidation pool 24, in contact-oxidation pool 23, using aerobic microbiological in aeration aerobic condition (aerobic bar
Part controls d0 >=2.0ppm, contact-oxidation pool sv30 >=30%, and return current ratio of the mixed liquid controls 1: 1～3: by institute in waste water under 1)
The residual organic substances containing are degraded to carbon dioxide and water further；Reduced using suspension combined stuffing simultaneously and even avoid dirt
The phenomenon that mud expands.
Sedimentation tank 27 includes the sludge reflux pump 29 of sedimentation tank central draft tube 28 and peripheral hardware, sedimentation tank 27 water outlet and reaction
Pond 30 is connected.Contact-oxidation pool 24 water outlet gravity flow enters sedimentation tank 27；By gravitational settling, mud-water separation；Sludge part flows back
To vertical oxidation groove 16, clear liquid enters reaction tank 30.
Reaction tank 30 includes pac throwing device 40 and the pam throwing device 41 of peripheral hardware, water outlet and coagulative precipitation tank 31 phase
Even.By adding pac and pam in reaction tank 30, the suspended state organic substance in waste water, colloidal organic substances matter are formed cotton-shaped
Body.
Coagulative precipitation tank 31 includes the sludge pump 33 of coagulative precipitation tank central draft tube 32 and peripheral hardware, water outlet and monitoring pond
34 are connected.In coagulative precipitation tank 31, mud-water separation is made by action of gravity, mud passes through sludge pump 33 pump to sludge condensation
Pond 35.
Sludge concentration tank 35 includes mud membrane pump 36 and sludge filter press 37, and mud clear liquid and sludge filter press filtrate are certainly
Stream enters mixing regulating reservoir 1 and again processes.Sludge filter press 37 produces mud and entrusts related qualification unit outward transport to dispose.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various modifications or modification within the scope of the claims, this not shadow
Ring the flesh and blood of the present invention.
Claims (10)
1. a kind of chemical wastewater treatment system is it is characterised in that described system includes mixing regulating reservoir (1), coagulation floatation
(5), distribution reservoir (6), uasb anaerobic reactor (10), vertical oxidation groove (16), hydrolysis acidification pool (20), contact-oxidation pool
(24), sedimentation tank (27), reaction tank (30) and coagulative precipitation tank (31)；Mixing regulating reservoir (1) water outlet and regulating reservoir elevator pump (4)
Water inlet pipe is connected, and regulating reservoir elevator pump (4) outlet pipe is connected to coagulation floatation (5)；Coagulation floatation (5) water outlet and distribution reservoir
(6) it is connected, distribution reservoir (6) outlet pipe is connected to the anaerobic reactor water-distributing device (11) in uasb anaerobic reactor (10)；uasb
Anaerobic reactor (10) outlet pipe is connected with the vertical oxidation groove water-distributing device (18) in vertical oxidation groove (16), vertical oxidation groove
(16) outlet pipe is connected with hydrolysis acidification pool (20)；Hydrolysis acidification pool (20) water outlet is connected with contact-oxidation pool (23)；Contact oxygen
Change pond (23) water outlet to be connected with sedimentation tank (27)；Sedimentation tank (27) water outlet is connected with reaction tank (30)；Reaction tank (30) water outlet with
Coagulative precipitation tank (31) is connected.
2. chemical wastewater treatment system according to claim 1 is it is characterised in that described uasb anaerobic reactor (10) wraps
Include the anaerobic reactor water-distributing device (11) being respectively provided with from bottom to top inside it, big intermediate plate combined stuffing layer (12), suspension ball
Packing layer (13), three phase separator (14) and effluent weir, also include the soda pop being connected with three phase separator (14) gas sampling pipe
Knockout drum (15), and the anaerobic reactor reflux pump (9) being connected with anaerobic reactor water-distributing device (11)；Described anaerobic reaction
The control of reflux ratio of device reflux pump (9) is 1: 1～3: 1.
3. chemical wastewater treatment system according to claim 1 is it is characterised in that described vertical oxidation groove (16) includes horizontal stroke
To the vertical oxidation groove distribution device (17), the vertical oxidation groove water-distributing device that are disposed in parallel in the interior middle and upper part of vertical oxidation groove (16)
, and be disposed longitudinally on some vertical oxidation groove filler specials (19) in vertical oxidation groove (16) (18).
4. chemical wastewater treatment system according to claim 1 is it is characterised in that described sedimentation tank (27) includes sedimentation tank
The sludge reflux pump (29) of central draft tube (28), clarifier sludge bucket and peripheral hardware, sedimentation tank (27) sludge part is back to vertical
Formula oxidation trough (16), residual sludge pump to sludge concentration tank (35).
5. chemical wastewater treatment system according to claim 1 is it is characterised in that described coagulative precipitation tank (31) includes mixing
Solidifying sedimentation tank central draft tube (32), coagulated sludge bucket, also include sludge pump (33), the pac throwing device (40) of peripheral hardware
With pam throwing device (41)；Coagulative precipitation tank (31) water outlet is connected with monitoring pond (34), and coagulative precipitation tank (31) mud passes through
Sludge pump (33) pump is to sludge concentration tank (35).
6. a kind of chemical wastewater treatment method being carried out using chemical wastewater treatment system according to claim 1, it is special
Levy and be, methods described comprises the steps:
S1, wastewater from chemical industry pass through grid, flow automatically to mixing regulating reservoir (1) and carry out Flow-rate adjustment, uniform water quality after removing impurity removing；
S2, enter the coagulation area of coagulation floatation (5) through waste water after uniform of Flow-rate adjustment, water quality, mix with the coagulant adding
Merge reaction and form tiny flock, then mix with flocculation aid, tiny flock is assembled and forms big flock；Coagulation area
Water outlet enters contact chamber, is fully contacted with dissolved air water and mixes, and the scum silica frost of formation is separated by flotation separation zone and excludes；
S3, the gravity flow of coagulation floatation (5) clear liquid enter distribution reservoir (6), by adding alkali and heating, adjust basicity and the temperature of waste water
Degree enters biochemical demand so as to meet；
S4, distribution reservoir (6) waste water pump, to uasb anaerobic reactor (10), by anaerobic reactor water-distributing device (11) water distribution, are protected
The uniformity of card water distribution and the utilization rate of pond appearance；Then using acid-producing bacteria and methane backeria, contained Organic substance in waste water is divided
Solution；By the three phase separator (14) setting in uasb anaerobic reactor (10), sludge reflux is to uasb anaerobic reactor (10) bottom
Portion, waste water rises to effluent weir discharge, and waste gas discharges after collection conduit is collected and disposed；
From flowing to vertical oxidation groove (16), by hanging, vertical oxidation groove psb is special to be filled out for s5, uasb anaerobic reactor (10) water outlet
Expect and add psb strain, and under aeration condition, significantly remove contained Organic substance in waste water；
S6, vertical oxidation groove (16) water outlet gravity flow enter hydrolysis acidification pool (20)；In hydrolysis acidification pool (20), using the micro- life of hydrolysis
Thing under anoxic conditions, hardly degraded organic substance is degraded to labile organic compound, that larger molecular organicses are decomposed into small molecule is organic
Thing；
S7, hydrolysis acidification pool (20) water outlet enter contact-oxidation pool (24)；In contact-oxidation pool (24), existed using aerobic microbiological
Under aeration condition, contained residual organic substances in waste water are degraded to carbon dioxide and water further；
S8, contact-oxidation pool (24) water outlet gravity flow enter sedimentation tank (27)；By gravitational settling, mud-water separation；Sludge part returns
It flow to vertical oxidation groove (16), clear liquid enters reaction tank (30)；
S9, in reaction tank (30) by adding pac and pam, by the suspended state organic substance in waste water, colloidal organic substances matter shape
Become flock；
S10, reaction tank (30) water outlet enter coagulative precipitation tank (31)；In the settling zone of coagulative precipitation tank (31), by gravity
Sedimentation, flock is settled removal, sludge pump to sludge concentration tank (35)；Coagulative precipitation tank (31) standard emission of clear.
7. chemical wastewater treatment method according to claim 6 is it is characterised in that in step s2, through flotation separation zone slag
Water separates the scum silica frost excluding and flows automatically to sludge concentration tank (35) through air supporting body refuse groove, concentrates the supernatant being formed and is back to mixing regulation
Pond (1), the mud after concentration forms mud cake outward transport through mechanical dehydration and disposes, and the filtrate that described dehydration is formed is back to mixing regulating reservoir
(1).
8. chemical wastewater treatment method according to claim 6 is it is characterised in that in step s3, in described distribution reservoir (6)
The temperature controlling waste water, at 35 ± 2 DEG C, maintains anaeration in normal temperature.
9. chemical wastewater treatment method according to claim 6 is it is characterised in that in step s7, described hydrolysis acidification pool
(20) utilize mixotroph degradation of organic substances under anoxic conditions；Described anoxia condition controls d0≤0.5ppm.
10. chemical wastewater treatment method according to claim 6 is it is characterised in that in step s8, described contact-oxidation pool
(24) utilize aerobic microbiological degradation of organic substances under aerobic condition；Described aerobic condition controls d0 >=2.0ppm, catalytic oxidation
Pond sv30 >=30%, return current ratio of the mixed liquid controls 1: 1～3: 1.
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