CN110127847A - A kind of Integral waste water processing unit and its processing method - Google Patents
A kind of Integral waste water processing unit and its processing method Download PDFInfo
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- CN110127847A CN110127847A CN201910493752.9A CN201910493752A CN110127847A CN 110127847 A CN110127847 A CN 110127847A CN 201910493752 A CN201910493752 A CN 201910493752A CN 110127847 A CN110127847 A CN 110127847A
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- 238000012545 processing Methods 0.000 title claims abstract description 64
- 239000002351 wastewater Substances 0.000 title claims abstract description 37
- 238000003672 processing method Methods 0.000 title claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 127
- 239000010802 sludge Substances 0.000 claims abstract description 34
- 238000010992 reflux Methods 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000006396 nitration reaction Methods 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims description 29
- 238000010943 off-gassing Methods 0.000 claims description 13
- 230000001376 precipitating effect Effects 0.000 claims description 9
- 238000005273 aeration Methods 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 32
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 16
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract description 4
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 231100000614 poison Toxicity 0.000 abstract 1
- 230000007096 poisonous effect Effects 0.000 abstract 1
- 230000035939 shock Effects 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 19
- 229910052760 oxygen Inorganic materials 0.000 description 19
- 239000001301 oxygen Substances 0.000 description 19
- 239000007789 gas Substances 0.000 description 6
- 238000005192 partition Methods 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000033116 oxidation-reduction process Effects 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 230000009935 nitrosation Effects 0.000 description 2
- 238000007034 nitrosation reaction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000012384 transportation and delivery Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- QOTAEASRCGCJDN-UHFFFAOYSA-N [C].CO Chemical compound [C].CO QOTAEASRCGCJDN-UHFFFAOYSA-N 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229940095054 ammoniac Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229940005654 nitrite ion Drugs 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N nitrous oxide Inorganic materials [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
- 238000004148 unit process Methods 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
-
- 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
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
-
- 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
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/15—N03-N
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
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)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
This application discloses a kind of Integral waste water processing unit and its processing methods.The device includes anoxic zone, aerobic zone and the settling zone between anoxic zone and aerobic section, and the bottom of anoxic zone is connected to aerobic zone by communicating pipe, by treated for anoxic zone water overflow to aerobic zone progress short distance nitration processing；Aerobic zone is configured with aerating system；Anoxic zone connects mixed liquor reflux unit, and aerobic zone muddy water is pumped to settling zone by short distance nitration return of waste water to anoxic zone, while according to the second airlift pump configured by aerobic zone；The bottom of settling zone is configured with sludge reflux mouth, sludge to be flowed back into anoxic zone and discharge outlet again, is discharged to water satisfactory after handling；So circulation carries out short distance nitration/denitrification until aerobic zone water quality reaching standard discharges.This method is suitable for high concentrated organic wastewater processing, organic wastewater with difficult degradation thereby, high ammonia-nitrogen wastewater removing total nitrogen, and to the poisonous and harmful substance strong shock resistance in waste water, removal efficiency is high.
Description
Technical field
The present invention relates to one kind to be suitable for the industries high nitrogen nitrogen field of waste water treatment such as steel, coal chemical industry, is specifically related to one
Kind Integral waste water processing unit and its processing method.
Background technique
As water eutrophication and water shortage problem are on the rise, discharge mark of the industries such as steel, coal chemical industry to ammonia nitrogen
Standard further increases, and also proposed requirement to always nitrogen discharged, and generally requiring the discharge standard of ammonia nitrogen is 5mg/L, the discharge of total nitrogen
Standard is 15mg/L, currently, it be biological denitrificaion mode is complete nitrification/denitrification that industrial waste water with high ammoniac nitrogen processing application is more
Technology, generallys use two-stage anoxic/aerobic and depositing technology, the technique because in its raw water carbon-nitrogen ratio it is lower, denitrification process must
Carbon source must additionally be added, and the air demand of Integral waste water processing unit aerobic zone larger causes power consumption higher.It is existing to grind
Study carefully the effect for showing that the mineralized nitrogen in waste water is needed for nitrite by nitrite bacteria, dissolved oxygen, temperature, pH are shadows
Ring the important factor of short distance nitration, followed by nomadic nitrogen and nitrite ion concentration etc..Therefore, there is an urgent need to a kind of letters
The device and method of single, easy to control, low operating cost meet this requirement.
Summary of the invention
In view of this, the present invention proposes a kind of Integral waste water processing unit to solve the above problems.
According to an aspect of the invention, there is provided a kind of Integral waste water processing unit, which is characterized in that include anoxic
Area, aerobic zone and the settling zone between anoxic zone and aerobic section；
The bottom of the anoxic zone is connected to aerobic zone by communicating pipe, by treated for anoxic zone water overflow to described
Aerobic zone carries out short distance nitration processing；
The aerobic zone is configured with the second airlift pump, based on instruction will treated water by water outlet pump drainage to described
Settling zone, the anoxic zone connect mixed liquor reflux unit, by the water of short distance nitration and to flow into the raw water of reflux unit
Anoxic zone is back to after mixing；
The bottom of the settling zone is configured with sludge reflux mouth, sludge to be flowed back into the anoxic zone, and draining again
Mouthful, satisfactory water to be discharged.The mixed liquor reflux unit is connected to aerobic zone, the water section of such aerobic zone processing
It is back to after being mixed in the mixed liquor reflux unit with raw water and flows into anoxic zone again, the ammonia for flowing into anoxic zone raw water can be reduced in this way
Nitrogen concentration is conducive to subsequent processing.
Preferably, which flows through outgassing pond through the water of gas pump drainage, and the water through outgassing pond outgassing enters heavy
Shallow lake area.
Preferably, which is configured with a plurality of partitions, and the water promoted through airlift pump flows through the partition to discharge in water
Bubble.
Preferably, the middle and lower part of aerating system configuration and aerobic zone, uses boring aeration, connects air hose.Compared with
Good, the aerating system is substantially parallel with the bottom of aerobic zone.
Preferably, which is configured with pH meter, is electrically connected control system, the information institute based on pH meter feedback
It states the lye that control system control is electrically connected and adds pump movement so that the pH value of aerobic zone is between 7.5~8.8.
Preferably, the liquid level of the settling zone be higher than the anoxic zone liquid level, in sludge by bottom configure time
Sludge head piece flows back into the anoxic zone.
Preferably, the liquid level of the anoxic zone is higher than the liquid level of the aerobic zone, in treated water pass through its bottom
Communicating pipe overflow is to aerobic zone.
Preferably, one embodiment of the application also proposes a kind of processing method of Integral waste water processing unit, which is characterized in that
Comprising above-mentioned processing unit, the method comprises the following steps:
S1. raw water flows into the anoxic zone of processing unit, carries out denitrification processing in anoxic zone；
S2. water overflow that treated for anoxic zone carries out short distance nitration processing in aerobic zone to aerobic zone；
S3. first airlift pump that passes through of aerobic zone passes through to be back to anoxic zone again after mixing part water with raw water
Second airlift pump, to precipitate part water pump drainage to settling zone；
S4. the water through precipitating flows back into anoxic zone by sludge reflux mouth again and carries out denitrification processing, and it is straight to repeat S1-S4.
Water quality to aerobic zone reaches preset requirement, and water is discharged by the outlet of settling zone.
It preferably, in the S2, also include that the water overflow of anoxic zone processing to aerobic zone and reaches preset first liquid of requirement
The aerating system in aerobic zone is opened in position.
Preferably, in the S2, also include that the water of aerobic zone reaches the second liquid level, stop water inlet or the water inlet of small flow,
The first airlift pump is opened, water section is back to anoxic zone,
The second airlift pump is opened, water suction settling zone is precipitated.
Preferably, in this method, based on the first airlift pump is opened, part water is back to the reflux ratio 20-30 of anoxic zone:
1。
Preferably, when the processing unit operation of this method, in S2, aerobic zone pH value is between 7.5~8.8.9. as right is wanted
Method described in asking 4, which is characterized in that when the processing unit is run, the temperature of aerobic zone described in S2 is between 30-40 DEG C.
Preferably, NH4+-N of the anoxic zone is between range 0.02-1.7mg/L, aerobic zone NO2-- N concentration between
0.2-2.8mg/L。
Beneficial effect
Compared with the existing technology, the application embodiment has the advantages that
(1) its design for sampling integral type of the device that the application proposes, in this way its structure simplify, and nitrosation efficiency is higher,
Operating process is simple；
(2) all metrical instruments, valve are connected with robot control system(RCS) and partial linkage, thus letter is operated in operational process
Just, it is precisely controlled；
(3) carbon source in raw water is made full use of, additional carbon is greatly reduced；
(4) by directly controlling pH to reach realization and maintain nitrosation.
According to below with reference to the accompanying drawings becoming to detailed description of illustrative embodiments, other feature of the invention and aspect
It is clear.
Detailed description of the invention
Comprising in the description and constitute the attached drawing of part of specification and specification together illustrate it is of the invention
Exemplary embodiment, feature and aspect, and principle for explaining the present invention.
Fig. 1 is the processing method flow chart of the Integral waste water processing unit of one embodiment of the invention；
Fig. 2 is the structural schematic diagram of the wastewater treatment equipment of one embodiment of the invention.
Specific embodiment
Below with reference to attached drawing various exemplary embodiments, feature and the aspect that the present invention will be described in detail.It is identical in attached drawing
Appended drawing reference indicate element functionally identical or similar.Although the various aspects of embodiment are shown in the attached drawings, remove
It non-specifically points out, it is not necessary to attached drawing drawn to scale.
Its course of work of Integral waste water processing unit that the application embodiment proposes is as shown in Figure 1, to be processed is useless
Water (also referred to as raw water) is pumped into anoxic zone by water pump and carries out denitrification processing, and the water by anoxic zone processing flows into aerobic zone and carries out
Short distance nitration, the processed water section in aerobic zone are back to anoxic zone, partially flow into settling zone (sedimentation basin) after outgassing is handled,
Muddy water through precipitating is re-fed into anoxic zone and carries out denitrification processing again, and the sludge of settling zone is discharged by sludge outlet, in this way
It recycles repeatedly, until the water that aerobic zone flows into sedimentation basin reaches discharge standard discharge (being also referred to as discharged).Pass through this Shen in this way
Please embodiment treated that water is entirely capable of reaching sewage discharge requirement: COD≤50mg/L, ammoniacal nitrogen≤5mg/L,
Total nitrogen≤15mg/L, total phosphorus≤0.5mg/L.
The Integral waste water processing unit that the application embodiment proposes, it includes anoxic zone, aerobic zone and between anoxic
The settling zone in area and aerobic section, the anoxic zone are configured with mixed liquor reflux unit, which is configured with aerating system；This is lacked
Oxygen area is by being connected to aerobic zone communicating pipe, return of waste water that aerobic zone is handled short distance nitration by the first airlift pump to anoxic
The muddy water of anoxic zone is pumped to settling zone by second group of airlift pump by area；The sludge of settling zone passes through the dirt configured below
Mud refluxing opening (being based on gravity) flows to the anoxic zone of Integral waste water processing unit.Circulation carries out short distance nitration/anti-repeatedly
Nitrification, until aerobic zone water quality reaching standard discharges.Preferably, outgassing region is also configured in settling zone, to be discharged in water
Gas enclosure.The information of the device instrument inspection that foundation configures at runtime, supplementary carbon source and basicity (pH value) when being lower than setting value.
In present embodiment, be based on same level, the liquid level highest of settling system (settling zone), followed by anoxic zone, aerobic zone
Liquid level is minimum.The minimum liquid level of settling zone is higher than the highest liquid level of anoxic zone, in this way since liquid-level pressure makes settling zone sludge
It is back to anoxic zone；Similarly the liquid level of anoxic zone is higher than the liquid level in the area Hao Yang.Mixed liquor reflux unit is to flow back aerobic zone
Processed water mixed with raw water after flow into anoxic zone again, the ammonia nitrogen concentration of water inlet can be reduced in this way, be conducive to subsequent processing,
Promote denitrification simultaneously.
It is illustrated in figure 2 the structural schematic diagram of the Integral waste water processing unit of one embodiment of the application, processing dress
It sets and includes, water inlet 1, water outlet 2, air hose 3, excess sludge delivery pipe 4, mixed liquor reflux airlift pump 5, anoxic zone thermometer
6, anoxic zone pH meter 7, anoxic zone dissolved oxygen instrument 8, anoxic zone oxidation-reduction potential instrument 9, aerobic zone thermometer 10, aerobic zone pH meter
11, aerobic zone dissolved oxygen instrument 12, aerobic zone oxidation-reduction potential instrument 13, feed water flow meter 14, air flow meter 15, effluent weir
16, anoxic zone measures weir 17, anoxic zone metering ruler 18, aeration tube 19, reaction and outgassing pond water inlet airlift pump 20, reacts and release
Air bound plate 21, sludge reflux mouth 22, anoxic zone 23, aerobic zone 24, reaction and outgassing area 25, settling zone 26, metering weir 27, metering
Scale 28, blender 29, anoxic/aerobic zone communicating pipe 30.
When the device is run, raw water (waste water) is pumped into anoxic zone 23 from water inlet 1 by water pump, when the water being pumped into reaches certain
When height (specific view application setting, be not limited thereto), the stirring of anoxic zone is opened based on control system (not shown)
Machine 29, is stirred, anoxic zone 23 handle water by be configured at anoxic/30 overflow of aerobic zone communicating pipe of its bottom enter it is aerobic
Aerating system 19 when the water that overflow enters aerobic zone 24 reaches a certain height, is opened based on control system by area 24, aerobic zone processing
When water reaches work liquid level, the short distance nitration liquid airlift pump 5 of aerobic zone to anoxic zone is opened, part water is back to anoxic zone, opens
The airlift pump 20 (also referred to as the second airlift pump) of aerobic zone to sloping plate deposition district is opened, part water flows into settling zone and precipitated.Precipitating
Area's sludge passes through sludge reflux mouth again and flows back into integrated bioreactor anoxic zone, so recycles, until the water of aerobic zone reaches
Mark (standard for reaching discharge) is discharged afterwards.
In present embodiment, anoxic zone 23 is also configured with water inlet 1 and configures feed water flow meter 14, the air of the water inlet
Pipe 3, excess sludge delivery pipe 4, anoxic zone thermometer 6, anoxic zone pH meter 7, anoxic zone dissolved oxygen instrument 8, anoxic zone redox
Potentiometer 9, aerobic zone thermometer 10.In present embodiment, aerobic zone 24 is also configured with aerobic zone pH meter 11, aerobic zone dissolved oxygen
Instrument 12, aerobic zone oxidation-reduction potential instrument 13, air flow meter 15, effluent weir 16, anoxic zone metering weir 17, anoxic zone metering mark
Ruler 18.The effluent weir enters the water of settling zone by metering ruler come accurate response.First and second airlift pump is all to need air
The air force of pipe 3 promotes water.
Above-mentioned Integral waste water processing unit is to integrate anoxic/aerobic, precipitating, sludge reflux, mixed liquor reflux
Equipment.Such design, apparatus structure is simple, reduces the occupied area of device.It is with mud-water separation, sludge reflux, mixed
Close the function of liquid reflux.Anoxic zone, settling zone, aerobic zone are mutually isolated, in liquid flowed only in accordance with preset pipe.It is lacking
Oxygen area converts nitrogen for nitrite nitrogen to remove total nitrogen using organic matter to denitrifying bacterium.Aerobic zone its to benefit
It by mineralized nitrogen is nitrite nitrogen with nitrite bacteria.The aerating system of aerobic zone uses boring aeration.Sludge reflux and mixed
Liquid reflux is closed, the sludge of settling zone enters anoxic zone to realize sludge reflux, after the processing of anoxic zone (biochemistry) by flow by gravity
Water enter aerobic zone according to flow by gravity, in present embodiment, the liquid level highest of settling system (settling zone), followed by anoxic
The liquid level in area, aerobic zone is minimum.The operation energy consumption for reducing device in this way, improves its economic benefit.In present embodiment, aerobic zone
Water outlet enter settling system and aerobic zone mixed liquor enters anoxic zone and is respectively necessary for draw-out device (such as airlift pump) Lai Shixian
This is promoted.The sludge reflux (about 3~5:1) of large scale has ensured the sludge back flow quantity into anoxic zone, makes the life of whole system
Object amount increases, and the sludge concentration of Integral waste water processing unit can reach 6000~10000mg/L or so.The mixed liquor of large scale
Reflux (about 20~30:1, i.e. the ratio between aerobic zone short distance nitration flow quantity and system amount of inlet water are 20-30 times of inflow) be
The removal rate of total nitrogen provides guarantee, while dilutes the toxicant into water.
Settling system is also referred to as settling zone, water (the i.e. aerobic zone of aerobic zone processing in above-mentioned Integral waste water processing unit
It is discharged, when reaching preset second liquid level) settling system is promoted to through the second airlift pump.Preferably, to prevent gas enclosure in water outlet
And then sedimentation effect is influenced, outgassing pond is set before settling zone, and preferably such as partition, the water promoted through airlift pump passes through outgassing pond
(multistage drop) discharges bubble, and the water by release gas process processing in this way enters settling zone to further increase precipitating and imitate
Fruit.In one embodiment, coagulant is set before partition, achievees the purpose that reaction using partition.
In above-mentioned Integral waste water processing unit, for the regurgitant volume of accurate metering sludge, it is arranged three in the leading portion of partition
Angle weir or rectangular weir enter the water of settling zone by metering ruler in this way come accurate response.
In above-mentioned Integral waste water processing unit, the precipitating based on settling zone ensure that the water quality of its water outlet is (low in water
Solid suspension), while having ensured high sludge concentration.In one embodiment, concentration basin is saved in device.
Above-mentioned Integral waste water processing unit also includes control system, and the control system is based on instruction or preset program
The operation of control device.Specifically, in one embodiment, the dissolved oxygen instrument and air flow meter of aerobic zone are chain, being based on should
The management information system of dissolved oxygen instrument detection adjusts oxygen content in water, makes it in preset range (preferably, as dissolved oxygen maintains
In 2-4mg/L)；The pH meter of aerobic zone adds the management information system control lye that pump is chain, detects based on the pH meter with lye
Pump is added so that pH value maintains preset section during operation for aerobic zone (e.g., pH value is between 7.5~8.8).Implement one
In mode, anoxic zone, aerobic zone are each configured with pH meter, dissolved oxygen instrument, oxidation-reduction potential instrument, thermometer；Preferably, it is also
Equipped with water inlet, aerobic zone air flow meter, control system is electrically connected.
Next the processing method of above-mentioned Integral waste water processing unit is described comprising following steps:
S1., raw water (waste water) is pumped into anoxic (pond A) area of Integral waste water processing unit by water pump, carries out denitrification
Processing；
S2. the water overflow of anoxic zone carries out short distance nitration processing to aerobic zone.
S3. aerobic zone by the first airlift pump, part water is back to anoxic zone, pass through the second airlift pump, use
It is precipitated so that part water is delivered to settling zone,
S4. the water through precipitating flows back into anoxic zone by sludge again and carries out denitrification processing,
S5. the satisfactory water discharge in settling zone.
In this method, in S1, also include be pumped into anoxic zone raw water (waste water) reach it is default (it is required that) after liquid level, open
The blender apparatus of anoxic zone is stirred with a certain revolving speed (e.g., 960 revs/min).
In this method, in S1, blender apparatus is stirred with the revolving speed in a certain section, can be turned for constant
Speed, can also be in the stirring of a certain revolving speed section internal speed-changing.
In this method, in S2, also include,
Overflow is to aerobic zone and reaches preset first liquid level of requirement, opens the aerating system of aerobic zone.Preferably, the exposure
Gas system open after preset time in (e.g., 24~48 hours) aerobic zone dissolved oxygen maintain between 2~4mg/L that (it is based on
The information of aerobic zone dissolved oxygen instrument detection is realized by the adjustment of control system), pH value maintains between 7.5~8.8 (its base
It is realized in the information of aerobic zone pH meter detection by the adjustment of control system).
In this method, in S2, also include that the water of aerobic zone reaches the second liquid level (also referred to as work liquid level), stops water inlet
Or the water inlet of small flow, the first airlift pump is opened, the water section of processing is back to anoxic zone, opens the second airlift pump,
Water suction settling zone is precipitated.Preferably, reflux ratio 20-30:1, sludge reflux amount is 3~5:1, and sludge concentration can reach
6000~10000mg/L；The dissolved oxygen concentration of aerobic zone maintains 0.5~1.2mg/L at this time.
S1-S4. is repeated, until the water of settling zone meets emission request discharge.In this method, as Integral waste water is handled
The aerobic zone short distance nitration reaction of device is lasting to be carried out, and pH and NH4+-N value gradually decline, NO2 -- N is increasingly increased, nitrous state
Nitrogen/total nitrogen reaches 90%, steps up inflow, until reaching Integral waste water processing unit process design criteria.Nitrous acid
State nitrogen is more than or equal to 13.5mg/L.
In this method, anoxic zone NH4 +- N 0.02~1.7mg/L of range, aerobic zone NO2 ―- N be based on concentration 0.2~
2.8mg/L.PH maintains 7.5-8.8 to Integral waste water processing unit during operation, if pH is lower than maintenance pH during operation
(e.g., 7.5) then increase inflow or add liquid alkaline；PH (e.g., 8.8) are maintained if being higher than, then stop intaking.Aerobic zone operation
Period temperature maintains 30-40 DEG C, reaches regulation by controlling inflow temperature.It is lacked according to water inlet, Integral waste water processing unit
Oxygen area, aerobic zone chemical oxygen demand measurement supplement a small amount of methanol carbon source in anoxic zone；Simultaneously according to total phosphorus Expenditure Levels, fit
When supplement phosphorus source.
In this method, using secondary settling tank sludge as seed sludge, it is injected separately into integrated bioreactor anoxic zone, aerobic
Area.
In this method, aerobic zone water reaches work liquid level, in dissolved oxygen between 0.5~1.2mg/L.Implement one
Method in, open the aerating system of aerobic zone, operation sometime in (in such as 24~48 hours) aerobic zone dissolution
Oxygen value is between 2~4mg/L.
In this method, water suction settling zone is precipitated, it is preceding preferably also to pass through outgassing process, in this way by release water
In gas water flow into settling zone, to further increase sedimentation effect.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
It cans understand the content of the present invention and implement it accordingly, it is not intended to limit the scope of the present invention.It is all to lead according to the present invention
The modification for wanting the Spirit Essence of technical solution to be done, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of Integral waste water processing unit, which is characterized in that comprising anoxic zone, aerobic zone and between anoxic zone with it is aerobic
The settling zone in section；
The bottom of the anoxic zone is connected to aerobic zone by communicating pipe, by treated for anoxic zone water overflow to described aerobic
Area carries out short distance nitration processing；
The aerobic zone is configured with the second airlift pump, and by treated, water passes through water outlet pump drainage to the precipitating based on instruction
Area, the anoxic zone connect mixed liquor reflux unit, to mix the water of short distance nitration with the raw water for flowing into reflux unit
After be back to anoxic zone；
The bottom of the settling zone is configured with sludge reflux mouth, sludge to be flowed back into the anoxic zone and discharge outlet again, uses
Satisfactory water to be discharged.
2. processing unit as described in claim 1, which is characterized in that second airlift pump is flowed through through the water of gas pump drainage
Outgassing pond, the water through outgassing pond outgassing enter settling zone.
3. processing unit as described in claim 1, which is characterized in that the aerobic zone is configured with pH meter, is electrically connected control
System processed, the lye that is electrically connected of control system control described in the information based on pH meter feedback add pump act so that
The pH value of aerobic zone is between 7.5~8.8.
4. a kind of processing method of Integral waste water processing unit, which is characterized in that comprising such as any one of claim 1-3 institute
The processing unit stated, the method comprises the following steps:
S1. raw water flows into the anoxic zone of processing unit, carries out denitrification processing in anoxic zone；
S2. water overflow that treated for anoxic zone carries out short distance nitration processing in aerobic zone to aerobic zone；
S3. first airlift pump that passes through of aerobic zone passes through second to be back to anoxic zone again after mixing part water with raw water
Airlift pump, to precipitate part water pump drainage to settling zone；
S4. the water through precipitating flows back into anoxic zone by sludge reflux mouth again and carries out denitrification processing,
Repetition S1-S4. reaches preset requirement up to the water quality of aerobic zone, and water is discharged by the outlet of settling zone.
5. method as claimed in claim 4, which is characterized in that in S2, also include,
The water overflow of anoxic zone processing to aerobic zone and reaches preset first liquid level of requirement, opens the aeration system in aerobic zone
System.
6. method as claimed in claim 5, which is characterized in that in S2, also include,
The water of aerobic zone reaches the second liquid level, stops water inlet or the water inlet of small flow,
The first airlift pump is opened, water section is back to anoxic zone,
The second airlift pump is opened, water suction settling zone is precipitated.
7. part water method as claimed in claim 6, to be back to the reflux ratio of anoxic zone based on the first airlift pump is opened
20-30:1.
8. method as claimed in claim 4, which is characterized in that when the processing unit is run, in S2
Aerobic zone pH value is between 7.5~8.8.
9. method as claimed in claim 4, which is characterized in that when the processing unit is run, the temperature of aerobic zone described in S2
Degree is between 30-40 DEG C.
10. method as claimed in claim 4, which is characterized in that NH4+-N of the anoxic zone is between range 0.02-
1.7mg/L, aerobic zone NO2-- N concentration are between 0.2-2.8mg/L.
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Application publication date: 20190816 |