CN106396191A - Emergency treatment process and device of waste water with high COD and high NH3-N - Google Patents
Emergency treatment process and device of waste water with high COD and high NH3-N Download PDFInfo
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- CN106396191A CN106396191A CN201611037098.3A CN201611037098A CN106396191A CN 106396191 A CN106396191 A CN 106396191A CN 201611037098 A CN201611037098 A CN 201611037098A CN 106396191 A CN106396191 A CN 106396191A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 185
- 238000006481 deamination reaction Methods 0.000 claims abstract description 30
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000001179 sorption measurement Methods 0.000 claims abstract description 9
- 239000002957 persistent organic pollutant Substances 0.000 claims abstract description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 91
- 230000003647 oxidation Effects 0.000 claims description 86
- 238000006386 neutralization reaction Methods 0.000 claims description 53
- 239000010865 sewage Substances 0.000 claims description 51
- 238000001556 precipitation Methods 0.000 claims description 29
- 239000000126 substance Substances 0.000 claims description 29
- 239000010802 sludge Substances 0.000 claims description 26
- 238000005189 flocculation Methods 0.000 claims description 14
- 230000016615 flocculation Effects 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 14
- 239000003344 environmental pollutant Substances 0.000 claims description 9
- 231100000719 pollutant Toxicity 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 239000013043 chemical agent Substances 0.000 claims description 4
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 claims description 4
- 239000003610 charcoal Substances 0.000 claims description 3
- 125000001309 chloro group Chemical group Cl* 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005352 clarification Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims 1
- 230000001590 oxidative effect Effects 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 238000004064 recycling Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract description 2
- 239000002352 surface water Substances 0.000 abstract description 2
- 230000007935 neutral effect Effects 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 229920002401 polyacrylamide Polymers 0.000 description 14
- 238000010992 reflux Methods 0.000 description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- -1 hydroxyl radical free radical Chemical class 0.000 description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 239000001117 sulphuric acid Substances 0.000 description 8
- 235000011149 sulphuric acid Nutrition 0.000 description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 6
- 239000003814 drug Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- YNPNZTXNASCQKK-UHFFFAOYSA-N phenanthrene Chemical compound C1=CC=C2C3=CC=CC=C3C=CC2=C1 YNPNZTXNASCQKK-UHFFFAOYSA-N 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000001448 anilines Chemical class 0.000 description 1
- 239000012223 aqueous fraction Substances 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002894 chemical waste Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000009615 deamination Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 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
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000010784 textile waste Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000000052 vinegar 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses an emergency treatment process and device of waste water with high COD and high NH3-N. The device comprises a primary Fenton oxidizing tower, a primary neutral reaction tank, a primary settling pond, a secondary Fenton oxidizing tower, a secondary neutral reaction tank, a secondary settling pond, a rapid filter, a primary deamination reaction device, a deep deamination reaction device and a clean water basin which are connected in sequence, wherein the deep deamination reaction device is further connected with an active carbon adsorption tower. High-salinity organic pollutant surface water can be treated, the requirements of production and environmental protection are met, and all devices used in the invention are existing commercially-available mature products respectively, the requirement of water purification cannot be met when the devices are independently used, and the requirement of water recycling can be met as long as the devices are combined and are used in a specific sequence, so that the device has the advantages of convenient operation and low cost.
Description
Technical field
The present invention is with regard to a kind of high-COD waste water handling process.More specifically, it is NH high with regard to a kind of high COD3- N waste water
Emergency handling process and device.
Background technology
With growth in the living standard, environmental consciousness strengthens, and people are to the migration in the environment of the Organic substance of difficult degradation, change
Change and increasingly pay close attention to, but the process of high-concentration hardly-degradable organic pollution, it is a difficult point of wastewater treatment.Several typical
High concentrated organic wastewater, such as coking chemical waste water, paper waste, pharmacy waste water, textile waste, dyeing waste water, oil/wastewater from chemical industry,
Percolate etc., it is generally individually higher that it mainly produces the effluent COD concentration of workshop section.
And water quality is complicated, containing multiple poisonous and hazardous inorganic matters and Organic substance, wherein contain be difficult to biodegradable naphthalene,
The non-chlorinated aromatic compound such as phenanthrene, chlorinated aromatic race compound, phosphoric acid vinegar, phenolic compound and amino benzenes compounds etc..Rubbish
COD, BOD in percolate5Concentration peak, up to thousands of to tens of thousands of, is compared with municipal sewage, and concentration is much higher.
There are following situations in some areas：Due to large-area precipitation, wastewater treatment are up to standard, waste water leaks reasons such as accident,
The water bodys such as neighbouring reservoir are polluted.Therefore, it is necessary to emergency processing is carried out to this polluted-water, to avoid affecting downstream
Water quality, and hidden danger is brought safely to periphery ecological environment and resident's diversion.
Content of the invention
It is an object of the invention to provide a kind of high NH of high COD3The emergency handling process of-N waste water and device, to reach row
Put requirement.
The present invention provides a kind of high NH of high COD3The emergency handling process of-N waste water, comprises the following steps：
1）The high NH of high COD3After-N waste water extracts from polluted-water, waste water is carried out with the steady of water quality and quantity regulation and pH value
Fixed；
2）Adjust through water quality and quantity and pH value stable after the sewage discharged enter one-level Fenton oxidation tower, adjust pH value simultaneously
Carry out Fenton oxidation process；
3）Sewage enters one-level neutralization reaction groove after Fenton oxidation process, adjusts pH value and add in one-level neutralization reaction groove
Enter flocculation aid；
4）The sewage that goes out of one-level neutralization reaction groove enters after first stage precipitation tank precipitates and carry out mud-water separation, and the sewage after separating enters
Enter two grades of Fenton oxidation towers；
5）Two grades of Fenton oxidation towers add required chemical agent by dosing pump, adjust pH value of sewage water and carry out Fenton oxygen
Change is processed；Water outlet enters two grades of neutralization reaction grooves, adjusts pH value and add flocculation aid in two grades of neutralization reaction grooves；
6）After the water outlet of two grades of neutralization reaction grooves enters second-level settling pond precipitate and separate, enter rapid filter and filter out remnants in water
Particulate pollutant, mud enter sludge treatment equipment；
7）Rapid filter enters primary deamination reaction device after filtering out remaining particulate pollutant in water, removes the NH in waste water3-
N, primary deamination reaction device water outlet enters the further denitrogenation of depth deamination reaction device, and removes part chlorine residue, and water outlet enters
Clear water reserviors；
8）When depth deamination reaction device water outlet is not up to effluent quality requirement, emergent place is carried out using activated carbon adsorber
Reason, the Organic substance in further Adsorption water, reduces COD and colourity.
In described step 1）In, water fetching device passes through floating drum pump and fetches water from polluted-water, and enters every trade water in regulating reservoir
The stablizing of matter runoff investigation and pH value.
In described step 2）In, the water outlet of described regulating reservoir enters one-level Fenton oxidation tower, and adjustment pH value of sewage water exists
Between 2.00-4.00, influent COD content >=1000mg/L, and add the FeSO that mass concentration is 5-15%4With mass concentration it is
The H of 15-28%2O2, mixed by hydraulic mixing, react, the dirty organic pollutants of oxidation become carbon dioxide and water, thus reducing
COD concentration.
In described step 3）In, described one-level Fenton oxidation tower water outlet adjusts pH in neutralization chamber between 8 to 9, makes
Fe in water outlet3+It is converted into Fe (OH)3Flco, and add flocculation aid PAM to promote High-speed clarification.
In described step 4）In, after described first stage precipitation tank carries out mud-water separation, sewage enters two grades of Fenton oxidation towers,
Mud enters sludge treatment equipment.
In described step 5）In, described regulation pH value of sewage water between 2.00-4.00, influent COD in 700mg/L,
And add the FeSO that mass concentration is 15%4The H being 28% with mass concentration2O2, mixed by hydraulic mixing, react, aoxidize sewage
Middle organic pollution is carbon dioxide and water, thus reducing the COD concentration of sewage.
Described high COD is high, and NH3-N waste water refers to COD content >=1000mg/L, NH3- N content >=100mg/L；In described step
Rapid 7）In, described clear water reserviors are the temporary use of sewage, and the water in this clear water reserviors is transported to Sewage Plant by groove tank car or enters city
Town sewer pipe network, to carry out subsequent treatment.
The present invention also provides a kind of high NH of high COD3The emergency treatment device of-N waste water, including the one-level being sequentially connected with
Fenton oxidation tower, one-level neutralization reaction groove, first stage precipitation tank, two grades of Fenton oxidation towers, two grades of neutralization reaction grooves, two grades sink
Shallow lake pond, rapid filter, primary deamination reaction device, depth deamination reaction device and clear water reserviors, described depth deamination reaction device is also
Connect activated carbon adsorber.
Also include connecting the sludge treatment equipment of described first stage precipitation tank and second-level settling pond, and the going out of sludge treatment equipment
Water connects described one-level Fenton oxidation tower.
Also include the backwash pump pipeline system for cleaning active charcoal adsorption tower；Also include respectively with intake equipment 1 and clear
The described emergent accident pond that pond 12 is connected.
Also include water fetching device, by water fetching device in reservoir water body by high for high COD NH3- N waste water is taken out to one-level
Fenton oxidation tower is processed.
Present invention has the advantage that：
The high NH of a kind of high COD being provided using the present invention3The emergency handling process of-N waste water and its device, can have to high salinity
Machine thing polluted surface water is processed, and each device employed in satisfaction production and environmental requirement, and the present invention is existing
Commercially available matured product, water purification requirement can not be met when being used alone, only group merge use in a specific sequence
Water can be made afterwards to reach the requirement reusing, have easy to operate, advantage with low cost.
Brief description
The high NH of high COD that Fig. 1 provides for the present invention3The structural representation of the emergency treatment device of-N waste water；
The high NH of high COD that Fig. 2 provides for the present invention3The flow chart of the emergency handling process of-N waste water.
Specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment in the present invention is described in further detail.
As shown in figure 1, providing a kind of high NH of high COD in the present invention3The emergency treatment device of-N waste water, includes water intaking dress
Put 1, one-level Fenton oxidation tower 2, one-level neutralization reaction groove 3,5, the two grades of neutralizations of 4, two grades of Fenton oxidation towers of first stage precipitation tank
Reactive tank 6, second-level settling pond 7, rapid filter 8, primary deamination reaction device 9, depth deamination reaction device 10, activated carbon adsorber
11st, clear water reserviors 12, sludge treatment equipment 13 and emergent accident pond 14.One-level Fenton oxidation tower 2, one-level neutralization reaction groove 3,
First stage precipitation tank 5, two grades of neutralization reaction grooves 6 of 4, two grades of Fenton oxidation towers, second-level settling pond 7, rapid filter 8, primary deamination are anti-
Answer device 9, depth deamination reaction device 10 and clear water reserviors 12, described depth deamination reaction device 10 is also connected with activated carbon adsorber
11.Described first stage precipitation tank 4 and second-level settling pond 7 are also connected with sludge treatment equipment 13.Described emergent accident pond 14 respectively with take
Water installations 1 are connected with clear water reserviors 12.Activated carbon adsorber 11 also connects clear water reserviors 12.
Water fetching device 1 passes through floating drum pump and directly fetches water from polluted-water, and enters the regulation of every trade water quality and quantity in regulating reservoir
With stablizing of pH value, there is no actual conditions requirement it is only necessary to meet stabilizing water quality.Outlet in regulating reservoir reaction unit
Place is provided with raw water elevator pump A1, so that the water of regulating reservoir reaction unit output is fed directly to one-level Fenton oxidation tower 2.
One-level Fenton oxidation tower 2 connects the H of its dosing promising2O2Chemicals dosing plant B2, sulphuric acid chemicals dosing plant and FeSO4
Chemicals dosing plant.One-level Fenton oxidation tower 2 is additionally provided with two advanced oxidation reflux pumps of connection, and advanced oxidation reflux pump connects respectively
The recycling effluent mouth at one-level Fenton oxidation tower 2 top, the current water inlet of tower bottom, to ensure interior circulation, promote medicament and give up
The uniform mixing of water, improves oxidation effectiveness.The interpolation of sulphuric acid can adjust the pH value of waste water, reaches oxidation reaction optimal conditionss.
FeSO4H can be promoted2O2Decomposition, generate hydroxyl radical free radical.The oxidizing potential of hydroxyl radical free radical reaches 2.8V, is in nature
Being only second to the hardening agent of fluorine, efficient oxidation removal being carried out to biochemical Organic substance difficult in sewage, thus reducing sewage
COD and the purpose of colourity.And hydroxyl radical free radical will not produce secondary pollution, meet the requirement of environmental protection.Through Fenton oxidation tower
Process after, COD total removal rate >=65% in sewage.
The water outlet of one-level Fenton oxidation tower 2 enters one-level neutralization reaction groove 3, and one-level neutralization reaction groove 3 connects NaOH and adds
Medicine device, makes waste water adjust pH in one-level neutralization reaction groove 3 between 8 to 9.One-level neutralization reaction groove 3 is provided with flocculation aid PAM
Chemicals dosing plant B5.Fe in one-level Fenton oxidation tower 2 water outlet3+Ion reacts generation Fe (OH) under weakly alkaline environment3Precipitation.
The remaining H of simultaneous reactions2O2Easily decompose under alkaline environment and generate oxygen, it is possible to reduce the content of hydrogen peroxide in water outlet.Help solidifying
Agent polyacrylamide（PAM）Macromolecular chain can be made mutually to twine crosslinking, formed and build bridge with the suspended particles in absorption effluent, so that
Flocculent structure increases and is easy to clarified separation, and then can more effectively remove the Fe (OH) in waste water3Precipitation and other pollution
Thing.
The part water outlet of one-level neutralization reaction groove 3 enters first stage precipitation tank 4 and carries out mud-water separation reaction, and then mud passes through
Sludge lifting pump enters sludge treatment equipment 13（Between sludge dewatering）.In sludge treatment equipment 13, mud separately is entered to advance
One step is processed, and its effluent recycling enters one-level neutralization reaction groove 3.The water outlet of first stage precipitation tank 4 enters two grades of Fenton oxidation
Tower 5.
Other part water outlet in one-level neutralization reaction groove 3 is back to one-level Fenton oxidation tower 2 by external reflux pump, with
Raw water carries out advanced oxidation reaction after being sufficiently mixed it is ensured that condition of water quality needed for advanced oxidation.
Two grades of Fenton oxidation towers 5 are provided with H2O2Chemicals dosing plant, sulphuric acid chemicals dosing plant and FeSO4Chemicals dosing plant.Two grades
Fenton oxidation tower 5 is additionally provided with two advanced oxidation reflux pumps, and two advanced oxidation reflux pumps connect oxidation top of tower respectively
Recycling effluent mouth, the current water inlet of tower bottom, to ensure uniformly mixing of interior circulation guarantee interior circulation, promotion medicament and waste water
Close, improve oxidation effectiveness.The interpolation of sulphuric acid can adjust pH value of waste water, reaches the optimal conditionss of flco generation.FeSO4Can promote
Enter H2O2Decomposition, generate hydroxyl radical free radical.The oxidizing potential of hydroxyl radical free radical reaches 2.8V, is to be only second to fluorine in nature
Hardening agent, can carry out efficient oxidation removal to difficult biochemical Organic substance in sewage, thus reducing COD of sewage and colourity
Purpose.And hydroxyl radical free radical will not produce secondary pollution, meet the requirement of environmental protection.Process through two grades of Fenton oxidation towers 5
Afterwards, COD total removal rate >=60% in sewage.
NaOH chemicals dosing plant is passed through in the water outlet of two grades of Fenton oxidation towers 5, adjusts pH ≈ 9.00 in two grades of neutralization reaction grooves 6
（PH can be between 8-10）.Two grades of neutralization reaction grooves 6 are provided with flocculation aid chemicals dosing plant.In the water outlet of two grades of Fenton oxidation towers 5
Fe3+Ion reacts generation Fe (OH) under weakly alkaline environment3Precipitation.The remaining H of simultaneous reactions2O2Under alkaline environment easily
Decompose and generate oxygen, it is possible to reduce the content of hydrogen peroxide in water outlet.Flocculation aid polyacrylamide（PAM）Can be with absorption effluent
Suspended particles, make macromolecular chain mutually twine crosslinking, are formed and build bridge, so that flocculent structure increases is easy to clarified separation and then permissible
More effectively remove the Fe (OH) in waste water3Precipitation and other pollutant.
Exteenal reflux is passed through to two grades of Fenton oxidation towers 5 in the water part of two grades of neutralization reaction grooves 6, is sufficiently mixed with raw water
Carry out advanced oxidation reaction afterwards it is ensured that condition of water quality needed for advanced oxidation.Two grades of neutralization reaction groove 6 another part water outlets enter
Second-level settling pond 7 carries out mud-water separation, and mud enters sludge treatment equipment 13, and the water outlet of second-level settling pond 7 enters rapid filter 8,
The water outlet of rapid filter 8 sequentially enters primary deamination reaction device and depth ammonia removal device, the water outlet of depth deamination reaction device
Enter clear water reserviors 12.
When the water outlet of depth deamination reaction device not up to standard in addition it is also necessary to be used for being met an urgent need using activated carbon adsorber 11,
Will depth deamination reaction device water outlet enter the further Adsorption water of activated carbon adsorber 11 in Organic substance, reduce
COD and colourity.
Water in clear water reserviors 12 is water up to standard, and this pool inner water is transported to sewage treatment plant by car, or enters town sewer pipe
Net, does subsequent treatment.
In the present invention, the sludge dehydration device 13 of setting is between sludge dewatering, because sludge disposal technology is more ripe, is
Prior art, here no longer separately illustrates.
Also include emergent accident pond 14 in the present invention to be connected with water fetching device 1 and clear water reserviors 12, for accident emergency, be used for
Treatment facility breaks down or processes water outlet situation not up to standard and carries out interim storage to waste water, or the sewage of ultrahigh concentration is temporary transient
Storage.
The present invention provides a kind of high NH of high COD3The emergency handling process of-N waste water, as shown in Fig. 2 comprise the steps of：
1）The high NH of high COD3- N waste water is from polluted-water（As reservoir）After middle extraction, water quality and quantity regulation and pH are carried out to waste water
The stablizing of value；
2）The sewage that floating drum water fetching device is discharged enters one-level Fenton oxidation tower by elevator pump, and adds institute by dosing pump
The chemical agent needing, adjusts pH value and carries out Fenton oxidation process；
3）Enter one-level neutralization reaction groove after sewage is oxidation-treated, in one-level neutralization reaction groove, adjust pH value to alkalescence simultaneously
Add PAM flocculation aid；
4）One-level neutralization reaction groove foul water fraction is back to one-level Fenton oxidation tower, and remainder enters first stage precipitation tank precipitation
After carry out mud-water separation after, sewage enter two grades of Fenton oxidation towers, mud enter sludge treating system；
5）Two grades of Fenton oxidation towers add required chemical agent by dosing pump, adjust pH value and carry out at Fenton oxidation
Reason；Water outlet enters two grades of neutralization reaction grooves, adjusts pH value and to alkalescence and add PAM flocculation aid in two grades of neutralization reaction grooves；
6）The water section of two grades of neutralization reaction grooves is back to two grades of Fenton oxidation towers, the raw water to high COD by external reflux pump
Carry out mixed diluting it is ensured that COD is in stable and is thoroughly mixed state in oxidizing tower；
7）After two grades of neutralization reaction groove remainder sewage enter second-level settling pond precipitate and separate, enter rapid filter and filter out in water
Remaining particulate pollutant, mud enters sludge treating system；
8）Rapid filter enters primary deamination reaction device after filtering out remaining particulate pollutant in water, removes the NH in waste water3-
N is it is ensured that water outlet NH3- N is up to standard.Primary deamination reaction device water outlet enters the further denitrogenation of depth deamination reaction device, and removes
Part chlorine residue, water outlet enters clear water reserviors；
9）When depth deamination reaction device water outlet is not up to effluent quality requirement, is met an urgent need using activated carbon adsorber, entered
Organic substance in one step Adsorption water, reduces COD and colourity；
10）Clear water reserviors are kept in sewage, and this pool inner water is transported to sewage treatment plant by car and does subsequent treatment.
11）Emergent accident pond accident emergency, breaks down or processes water outlet situation not up to standard to useless for treatment facility
Water carries out interim storage, or the sewage of ultrahigh concentration temporarily stores.
In order to be further ensured that the normal operation of each device and guarantee the water quality exporting, as shown in Fig. 2 in the present invention more
The technical process of body is as follows：
1）The high NH of high COD3- N waste water is from polluted-water（As reservoir）After middle extraction, it is directly entered floating drum water fetching device 1, passes through
The regulation of 0.5-2.0h, makes regulating reservoir water outlet COD ≈ 3000mg/L, pH=7～8, regulating reservoir water outlet is via raw water elevator pump A1
Input described one-level Fenton oxidation device 2.
2）It is provided with H in the reflux pipe of one-level Fenton oxidation tower 22O2Chemicals dosing plant B2, sulphuric acid chemicals dosing plant and
FeSO4Chemicals dosing plant.Medicament and sewage can be allowed sufficiently to be mixed by the internal reflux of one-level Fenton oxidation tower 2.
By adding sulphuric acid, adjust wastewater pH ≈ 3.00 it is ensured that the suitable condition of Fenton oxidation.After Fenton oxidation is processed,
The COD total removal rate of water outlet between 50-85%, water outlet COD≤700mg/L.
3）The water outlet gravity flow of one-level Fenton oxidation tower 2 enters one-level neutralization reaction groove 3, and one-level neutralization reaction groove 3 configures
There is NaOH chemicals dosing plant B1, the pH ≈ 9.00 of water body in one-level neutralization reaction groove 3, be conducive to one-level Fenton oxidation tower 2 water outlet
In Fe3+Ion reacts generation Fe (OH) under alkaline environment3Precipitation, is simultaneously also beneficial to excessive H2O2Under alkaline environment
Decompose.One-level neutralization reaction groove 3 is also configured with PAM chemicals dosing plant, flocculation aid polyacrylamide（PAM）Can be with absorption effluent
Suspended particles, make macromolecular chain mutually twine crosslinking, are formed and build bridge, so that flocculent structure increases is easy to clarified separation and then permissible
More effectively remove the Fe (OH) in waste water3Precipitation and other pollutant.The addition of flocculation aid to the colloid in sewage and is consolidated
Body particle suspensions serve extraordinary removal effect.One-level Fenton oxidation tower 2 is additionally provided with two advanced oxidation reflux pumps.
4）After one-level neutralization reaction groove 3 sewage entrance sedimentation tank precipitation carries out mud-water separation, sewage enters two grades of Fenton
Oxidizing tower 5, mud enters sludge treating system.
5）The water outlet of one-level neutralization reaction groove 3 enters first stage precipitation tank 4 and is reacted, and is then entered by sludge lifting pump
Sludge treatment equipment 13.In between sludge dewatering, mud is separately further processed, and water outlet enters leading portion processing system.
Water section in one-level neutralization reaction groove 3 is back to one-level Fenton oxidation tower 2 by external reflux pump, fills with raw water
Carry out advanced oxidation reaction it is ensured that condition of water quality needed for advanced oxidation after point mixing.The remaining water outlet of one-level neutralization reaction groove 3 is entered
Enter first stage precipitation tank 4.
Sewage carries out mud-water separation in first stage precipitation tank 4, and mud enters sludge treatment equipment 13, first stage precipitation tank 4 water outlet
Enter two grades of Fenton oxidation towers 5.
6）Water body COD≤700mg/L in one-level neutralization reaction groove 3,90% is back to one-level Fenton by external reflux pump
Oxidizing tower 2, carries out mixed diluting to the raw water of COD ≈ 3000 mg/L it is ensured that sewage is in stable and is thoroughly mixed in oxidizing tower
State, the water of intermediate pool residue 10% is water outlet, and its amount is equal to raw water and intakes.
7）Two grades of Fenton oxidation towers 5 are provided with H2O2Chemicals dosing plant B5, sulphuric acid chemicals dosing plant B6 and FeSO4Dosing fills
Put.Two grades of Fenton oxidation towers 5 are additionally provided with advanced oxidation reflux pump A6, A7 it is ensured that interior circulation, promote the uniform of medicament and waste water
Mixing, improves oxidation effectiveness.The interpolation of sulphuric acid can adjust pH value of waste water, reaches the optimal conditionss of flco generation.FeSO4Permissible
Promote H2O2Decomposition, generate hydroxyl radical free radical.The oxidizing potential of hydroxyl radical free radical reaches 2.8V, is to be only second to fluorine in nature
Hardening agent, efficient oxidation removal can be carried out to difficult biochemical Organic substance in sewage, thus reducing COD of sewage and colourity
Purpose.And hydroxyl radical free radical will not produce secondary pollution, meet the requirement of environmental protection.After the process of Fenton oxidation tower,
COD total removal rate >=60% in sewage.
NaOH chemicals dosing plant is passed through in the water outlet of two grades of Fenton oxidation towers 5, adjusts pH ≈ in two grades of neutralization reaction grooves 6
9.00.Two grades of neutralization reaction grooves 6 are provided with PAM chemicals dosing plant.Fe in the water outlet of two grades of Fenton oxidation towers 53+Ion is in alkalescence
Under environment, reaction generates Fe (OH)3Precipitation.The remaining H of simultaneous reactions2O2Easily decompose under alkaline environment and generate oxygen, permissible
Reduce the content of hydrogen peroxide in water outlet.Flocculation aid polyacrylamide（PAM）Macromolecule can be made with the suspended particles in absorption effluent
Chain mutually twines crosslinking, is formed and builds bridge, so that flocculent structure increases is easy to clarified separation, and then can more effectively remove in waste water
Fe (OH)3Precipitation and other pollutant.
8）Water section in two grades of neutralization reaction grooves 6 passes through exteenal reflux to two grades of Fenton oxidation towers 5, fully mixed with raw water
Carry out advanced oxidation reaction it is ensured that condition of water quality needed for advanced oxidation after conjunction.Two grades of neutralization reaction groove 6 water outlets enter two grades and sink
Shallow lake pond 7.
9）Sewage carries out mud-water separation in second-level settling pond 7, and mud enters sludge treatment equipment 13, and second-level settling pond 7 goes out
Water enters clear water reserviors 12.
10）Activated-carbon device 11 is met an urgent need, the Organic substance in further Adsorption water, reduces COD and colourity.
11）Water in clear water reserviors 12 is water up to standard, and this pool inner water is transported to sewage treatment plant by car, or enters town sewer
Pipe network, does subsequent treatment.
The high NH of high COD in the present invention3- N waste water refers to COD content >=1000mg/L, NH3The pollution of-N content >=100mg/L
Water.The effluent index being finally reached emission request reaches《Sewage enters town sewer water standard》（GB/T 31962-
2015）Grade III Standard.
Claims (10)
1. the high NH of a kind of high COD3The emergency handling process of-N waste water is it is characterised in that comprise the following steps：
1）The high NH of high COD is extracted from polluted-water3- N waste water；
2）The sewage extracting enters one-level Fenton oxidation tower, adjusts pH value and carries out Fenton oxidation process；
3）Sewage enters one-level neutralization reaction groove after Fenton oxidation process, adjusts pH value and add in one-level neutralization reaction groove
Enter flocculation aid；
4）The sewage that goes out of one-level neutralization reaction groove enters after first stage precipitation tank precipitates and carry out mud-water separation, and the sewage after separating enters
Enter two grades of Fenton oxidation towers；
5）Two grades of Fenton oxidation towers add required chemical agent by dosing pump, adjust pH value of sewage water and carry out Fenton oxygen
Change is processed；Water outlet enters two grades of neutralization reaction grooves, adjusts pH value and add flocculation aid in two grades of neutralization reaction grooves；
6）After the water outlet of two grades of neutralization reaction grooves enters second-level settling pond precipitate and separate, enter rapid filter and filter out remnants in water
Particulate pollutant, mud enter sludge treatment equipment；
7）Rapid filter enters primary deamination reaction device after filtering out remaining particulate pollutant in water, removes the NH in waste water3-
N, primary deamination reaction device water outlet enters the further denitrogenation of depth deamination reaction device, and removes part chlorine residue, and water outlet enters
Clear water reserviors；
8）When depth deamination reaction device water outlet is not up to effluent quality requirement, emergent place is carried out using activated carbon adsorber
Reason, the Organic substance in further Adsorption water, reduces COD and colourity.
2. the high NH of high COD according to claim 13The emergency handling process of-N waste water is it is characterised in that in described step
1）In, water fetching device passes through floating drum pump and fetches water from polluted-water, and enters the regulation of every trade water quality and quantity and pH value in regulating reservoir
Stable.
3. the high NH of high COD according to claim 23The emergency handling process of-N waste water is it is characterised in that in described step
2）In, the water outlet of described regulating reservoir enters one-level Fenton oxidation tower, adjusts pH value of sewage water between 2.00-4.00, influent COD
Content >=1000mg/L, and add the FeSO that mass concentration is 5-15%4With the H for 15-28% for the mass concentration2O2, by waterpower
Stirring mixing, reaction, the dirty organic pollutants of oxidation become carbon dioxide and water, thus reducing COD concentration.
4. the high NH of high COD according to claim 13The emergency handling process of-N waste water is it is characterised in that in described step
3）In, described one-level Fenton oxidation tower water outlet adjusts pH in neutralization chamber between 8 to 9, makes the Fe in water outlet3+It is converted into Fe
(OH)3Flco, and add flocculation aid PAM to promote clarification.
5. the high NH of high COD according to claim 13The emergency handling process of-N waste water is it is characterised in that in described step
4）In, after described first stage precipitation tank carries out mud-water separation, sewage enters two grades of Fenton oxidation towers, and mud enters Treatment of Sludge dress
Put.
6. the high NH of high COD according to claim 13The emergency handling process of-N waste water is it is characterised in that in described step
5）In, between 2.00-4.00, influent COD is in 700mg/L, and adds the mass concentration to be 5- for described regulation pH value of sewage water
15% FeSO4With the H for 15-28% for the mass concentration2O2, mixed by hydraulic mixing, react, the dirty organic pollutants of oxidation
For carbon dioxide and water, thus reducing the COD concentration of sewage；In described step 7）In, described clear water reserviors make for the temporary of sewage
With the water in this clear water reserviors is transported to Sewage Plant by groove tank car or enters town sewer pipe network, to carry out subsequent treatment.
7. the high NH of a kind of high COD3The emergency treatment device of-N waste water is it is characterised in that include the one-level Fenton oxygen being sequentially connected with
Change tower, one-level neutralization reaction groove, first stage precipitation tank, two grades of Fenton oxidation towers, two grades of neutralization reaction grooves, second-level settling pond, fast
Filter tank, primary deamination reaction device, depth deamination reaction device and clear water reserviors, described depth deamination reaction device is also connected with activity
Charcoal adsorption tower.
8. the high NH of high COD according to claim 73The emergency treatment device of-N waste water is it is characterised in that also include connecting
Described first stage precipitation tank and the sludge treatment equipment of second-level settling pond, and the water outlet of sludge treatment equipment connects described one-level
Fenton oxidation tower.
9. the high NH of high COD according to claim 73The emergency treatment device of-N waste water it is characterised in that also include for
The backwash pump pipeline system of cleaning active charcoal adsorption tower；Should described in also including being connected with intake equipment 1 and clear water reserviors 12 respectively
Anxious accident pool.
10. the high NH of high COD according to claim 73The emergency treatment device of-N waste water is it is characterised in that also include fetching water
Device, by water fetching device in reservoir water body by high for high COD NH3- N waste water is taken out at one-level Fenton oxidation tower
Reason.
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| CN109626714A (en) * | 2018-12-06 | 2019-04-16 | 江苏维尔利环保科技股份有限公司 | The film filtration concentrated processing method of landfill leachate nanofiltration concentrate second level minimizing |
| CN112723607A (en) * | 2021-01-11 | 2021-04-30 | 中科鼎实环境工程有限公司 | Underground water treatment method and device for high-COD and high-ammonia nitrogen pollution site |
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