CN105174628B - A kind of wastewater treatment method - Google Patents
A kind of wastewater treatment method Download PDFInfo
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- CN105174628B CN105174628B CN201510607764.1A CN201510607764A CN105174628B CN 105174628 B CN105174628 B CN 105174628B CN 201510607764 A CN201510607764 A CN 201510607764A CN 105174628 B CN105174628 B CN 105174628B
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Abstract
The invention discloses a kind of wastewater treatment methods, preliminary sedimentation, the inverse inverse ultra filtration that oozes adjusting, the Anaerobic Treatment of anoxic regulating reservoir, the aerobic aeration processing in aerobic aeration pond, the pre-filtering of 5 μm pre-filtrating equipment, activated carbon adsorption and ultrafiltration apparatus that oozes regulating reservoir of this method by waste water by primary sedimentation tank, finally obtain the water for meeting discharge standard.Low energy consumption for the wastewater treatment method of the application, operating cost is low；And overall process is physical method, non-secondary pollution；Structures floor space is small, and construction cost is low；In addition, the outer press mold that ultrafiltration apparatus used herein selects membrane area big, stain resistance is strong, and cleaning is restorative good.
Description
Technical field
The present invention relates to technology of waste water control field more particularly to a kind of wastewater treatment methods.
Background technology
With the continuous development of industry, Industrial Wastewater Treatment measurement and difficulty also constantly increases, especially coking, petrochemical industry and
The waste water such as printing and dyeing are current more reluctant several waste water.Currently, process for treating industrial waste water mainly uses biological treatment
Method and burning method：First, bioremediation is first using pretreatment, to remove the grease and solid carbon in industrial wastewater, and
Carry out deep aeration materializing strategy again afterwards, it is harmful to remove the ammonia in industrial wastewater, nitrogen, phenol, sulphur, sulfide and hydrogen cyanide etc.
Substance, at 60 hours or more the time required to the processing procedure of this biochemical processing method, to the suspended matter colloid of turbidity and coloration,
The removal treatment effeciency of COD only has 70% or so, and bioremediation basis input engineering is huge, processing system operating cost
Height, system processing procedure is affected by environment larger, coking and dyeing waste water is handled especially within the low temperature time, treatment effect is not
Stablize；Second, although burning method can be effectively to Industrial Wastewater Treatment, burning method is sprayed into combustion gas, fuel oil for main fluid fuel
Precombustion in stove, is then sprayed into waste water, so that waste water is aoxidized at high temperature and generates nitrogen and water, thus burning method processing cost cost phase
Work as height, practical extending application value is low.
Therefore, the technical issues of how solving the above problems as those skilled in the art's urgent need to resolve.
Invention content
The problem of for background technology, the purpose of the present invention is to provide a kind of wastewater treatment method, the application
Wastewater treatment method low energy consumption, operating cost is low；And overall process is physical method, non-secondary pollution；Structures take up an area face
Product is small, and construction cost is low；In addition, the outer press mold that ultrafiltration apparatus used herein selects membrane area big, stain resistance is strong,
It is restorative good to clean.
The purpose of the present invention is achieved through the following technical solutions：
A kind of wastewater treatment method, described method includes following steps：
1）Waste water need to be handled and be first pooled to primary sedimentation tank, preliminary sedimentation is carried out, to remove most inorganic particulate in waste water
Grain object and suspended matter；
2）Wastewater supernatant fluid after preliminary sedimentation is introduced into the inverse bottom of pond for oozing regulating reservoir by closing pipe line, in distance
Pallet is built at the inverse bottom of pond setpoint distance for oozing regulating reservoir, activated coke is put on the pallet, utilizes the suction of activated coke
Attached function dispels unprecipitated particulate matter in water；
3）Wastewater supernatant fluid after the activated coke adsorption treatment is uniformly slowly introduced to anoxic regulating reservoir；It is lacking
Under the conditions of oxygen, anaerobic bacteria mass propagation removes the partial organic substances and nitrogen in waste water under the action of anaerobic bacteria；
4）Waste water after Anaerobic Treatment is introduced into aerobic aeration pond, aerobic micro- life is put into the aerobic aeration pond
Object；The organic matter in waste water is removed under the action of aerobic microbiological；Meanwhile aeration tank is also the nitrification stage of nitrogen, into
One step removes the nitrogen in waste water；
5）To pass through treated in aerobic aeration pond, wastewater supernatant fluid introduces 5 μm of pre-filtrating equipments, to diameter >=5 μm
Particulate matter, muddy object and suspended matter are effectively retained；
6）Using activated carbon to being adsorbed by 5 μm of pre-filtrating equipment processed waste waters, to remove in waste water
Dissolved organic matter, in addition, can also drive away surfactant, removing coloration, heavy metal and chlorine residue；
7）Step 6 will be passed through）In activated carbon adsorption after waste water introduce ultrafiltration apparatus carry out ultra filtration, finally obtain
Meet the water of discharge standard.
Further, in the step 4）With step 5）Between be additionally provided with following steps：The aerobic aeration pond will be passed through
In treated waste water introduce circulatory pool so that waste water is precipitated clarification again；Then it will pass through and precipitate clear give up again
Supernatant introduces 5 μm of pre-filtrating equipments.
Further, in the step 4）With step 5）Between be additionally provided with following steps：Passing through the aerobic aeration pond
Zeolite and activated carbon are added in treated waste water, to remove the ammonia nitrogen and pigment in waste water.
Further, the step 2）In the setpoint distance be 80-100 ㎝, a diameter of 10- of the activated coke
20mm, the thickness that activated coke is accumulated on the pallet are 100-150 ㎝.
Further, the anoxic regulating reservoir includes level Four regulating reservoir；The step 3）Specially：
A) wastewater supernatant fluid after the activated coke adsorption treatment is uniformly slowly introduced to first order anoxic first
Regulating reservoir；
B) it and then at 0.6 meter height of the first order anoxic regulating reservoir with second level anoxic regulating reservoir junction will give up
Water introduces the second level anoxic regulating reservoir；
C) and then at 1.5 meters of height of second level anoxic regulating reservoir with third level anoxic regulating reservoir junction by waste water draw
Enter the third level anoxic regulating reservoir；
D) finally waste water is introduced at 1 meter of height of third level anoxic regulating reservoir with fourth stage anoxic regulating reservoir junction
The fourth stage anoxic regulating reservoir；The Anaerobic Treatment to waste water is completed in fourth stage anoxic regulating reservoir.
Further, the step 4）Specially：Jet aerator is set in the aerobic aeration pond first, it is useless to ensure
There is sufficient dissolved oxygen in water；Then aerobic microbiological is put into aerobic aeration pond；Because having sufficient nutrient and dissolving in waste water
Oxygen, aerobic microbiological is by mass propagation, and the nutrient in huge uptake water, to remove the organic matter in waste water；Meanwhile nitrogen member
Element will enter nitrification stage, the ammoniacal nitrogen NH4 from the waste water that the anoxic regulating reservoir comes out—N is turned by aerobic aeration pond
It is melted into nitrate nitrogen NO3—N, to be to go to denitrogenate the condition of creating.
Further, the step 4）The middle aerobic microbiological used be by using asynchronous training method, synchronous training method or
It is inoculated with the activated sludge of the culture of training method and domestication.
Further, the step 7）In ultrafiltration apparatus operation reflux will be introduced again into the aerobic aeration pond, into
Row is aerated again, to avoid the discharge of unqualified waste water occurs.
The present invention has following positive technique effect：
Low energy consumption for the wastewater treatment method of the application, operating cost is low；And overall process is physical method, without secondary dirt
Dye；Structures floor space is small, and construction cost is low；In addition, the external pressure that ultrafiltration apparatus used herein selects membrane area big
Film, stain resistance is strong, and cleaning is restorative good.
Description of the drawings
Fig. 1 is the flow chart of the wastewater treatment method of the present invention.
Specific implementation mode
In the following, refer to the attached drawing, makes a more thorough explanation the present invention, attached drawing acceptance of the bid shows the exemplary reality of the present invention
Apply example.However, the present invention can be presented as a variety of different forms, it is not construed as the exemplary implementation for being confined to describe here
Example.And these embodiments are to provide, it is of the invention full and complete to make, and will fully convey the scope of the invention to this
The those of ordinary skill in field.
The spatially relative terms such as "upper", "lower" " left side " " right side " can be used herein for ease of explanation, for saying
Relationship of the elements or features relative to another elements or features shown in bright figure.It should be understood that in addition in figure
Except the orientation shown, spatial terminology is intended to include the different direction of device in use or operation.For example, if in figure
Device is squeezed, and is stated as being located at other elements or the element of feature "lower" will be located into other elements or feature "upper".Cause
This, exemplary term "lower" can include both upper and lower orientation.Device can be positioned in other ways（It is rotated by 90 ° or is located at
Other orientation）, can be interpreted accordingly used herein of the opposite explanation in space.
As shown in Figure 1, this application provides a kind of wastewater treatment method, this method comprises the following steps：
1）Waste water need to be handled and be first pooled to primary sedimentation tank, preliminary sedimentation is carried out, to remove most inorganic particulate in waste water
Grain object and suspended matter；Primary sedimentation tank plays the role of a preliminary sedimentation, and sewage caused by sanitary sewage or industrial wastewater is first
It is pooled to primary sedimentation tank, effective stop is carried out and precipitates, some inorganic particulate matters and some suspended matters, under the effect of gravity, by
Step is sink to bottom of pond, achievees the purpose that tentatively to remove other most suspended matters.
2）Wastewater supernatant fluid after preliminary sedimentation is introduced into the inverse bottom of pond for oozing regulating reservoir by closing pipe line, in distance
Pallet is built at the inverse bottom of pond setpoint distance for oozing regulating reservoir, activated coke is put on the pallet, utilizes the suction of activated coke
Attached function dispels unprecipitated particulate matter in water；Pallet is erected at the inverse above 80-100 ㎝ of bottom of pond for oozing regulating reservoir, is being held in the palm
It is put into the activated coke of 10-20 ㎜ diameters on disk, and is put into the activated coke of 100-150 ㎝ thickness on pallet according to sewage load
Layer；Unprecipitated middle large particle in water is dispelled using the adsorption function of activated coke, it is equivalent to grid, only than general lattice
The grid gap of grid is small, can stop smaller organic and inorganic matter, colloid and suspended matter.Further, since activated coke is in alkalescent, moreover it is possible to
The acidic materials in water are effectively neutralized, to play the effect for the pH value for adjusting water.Simultaneously growth is easy on the surface of activated coke
The microorganisms such as bacterium, therefore initial breakdown can be carried out to organic matter.
3）Uniformly slowly by the wastewater supernatant fluid after activated coke adsorption treatment（Prevent that spray from seething and keeps oxygen molten
Enter）Introduce anoxic regulating reservoir；Under anaerobic, anaerobic bacteria mass propagation removes the portion in waste water under the action of anaerobic bacteria
Divide organic matter and nitrogen；General anoxic regulating reservoir organic removal rate is that nitrogen proceeds by 50-60% while sewage
Ammonification and denitrification, the nitrogen in organic matter are converted NH4—N and N2；Denitrification in anoxic regulating reservoir, which can reach, to remove
The purpose of nitrogen.
4）Waste water after Anaerobic Treatment is introduced into aerobic aeration pond, aerobic aeration is put into aerobic microbiological in pond；
The organic matter in waste water is removed under the action of aerobic microbiological；Meanwhile aeration tank is also the nitrification stage of nitrogen, is further gone
Except the nitrogen in waste water；Because of the nutrient containing abundance in aerobic aeration pond and dissolved oxygen, the aerobic microbiological in aeration tank
Mass propagation, and the nutrient in huge uptake water, to achieve the purpose that organics removal.Meanwhile aeration tank is also nitrogen
The nitrification stage, the ammoniacal nitrogen NH that is formed through ammoniation of water come out from anoxic regulating reservoir4—N, by aeration tank, it is converted
At nitrate nitrogen NO3—N further creates advantage for the removal of nitrogen.
5）To pass through treated in aerobic aeration pond, wastewater supernatant fluid introduces 5 μm of pre-filtrating equipments, to diameter >=5 μm
Particulate matter, muddy object and suspended matter are effectively retained；5 μm of pre-filtrating equipments are the filters of a set of stainless steel device,
Its water inlet be previous step treated wastewater supernatant fluid is extracted by water supply pump, and by >=5 μm of particulate matter, muddy object and
Micro ss suspended solid is effectively retained.
6）Using activated carbon to being adsorbed by 5 μm of pre-filtrating equipment processed waste waters, to remove in waste water
Dissolved organic matter, in addition, can also drive away surfactant, removing coloration, heavy metal and chlorine residue；Activated carbon adsorption is with physics
Based on absorption, but including also having a chemisorption.
7）Step 6 will be passed through）In activated carbon adsorption after waste water introduce ultrafiltration apparatus carry out ultra filtration, finally obtain
Meet the water of discharge standard.Wherein, Hollow Fiber Ultrafiltration machine can be used in ultrafiltration apparatus.The operation reflux of Hollow Fiber Ultrafiltration machine will
It is introduced again into the aerobic aeration pond, then is aerated, therefore there is no underproof sewage to discharge this process again, therefore
The target of zero-emission is basically reached, therefore the efficiency of processed sewage intercepting well is made to be greatly improved.
Preferably, in the step 4）With step 5）Between be additionally provided with following steps：Aerobic aeration pond Zhong Chu will be passed through
Waste water after reason introduces circulatory pool, so that waste water is precipitated clarification again；Then it will pass through and precipitate again on clear waste water
Clear liquid introduces 5 μm of pre-filtrating equipments.
Preferably, in the step 4）With step 5）Between be additionally provided with following steps：It is handled by aerobic aeration pond
Zeolite and activated carbon are added in waste water afterwards, to remove the ammonia nitrogen and pigment in waste water.
Preferably, the anoxic regulating reservoir of the application includes level Four regulating reservoir；Step 3）Specially：
A) wastewater supernatant fluid after activated coke adsorption treatment is uniformly slowly introduced to first order anoxic first to adjust
Pond；
B) it and then at 0.6 meter height of the first order anoxic regulating reservoir with second level anoxic regulating reservoir junction will give up
Water introduces the second level anoxic regulating reservoir；
C) and then at 1.5 meters of height of second level anoxic regulating reservoir with third level anoxic regulating reservoir junction by waste water draw
Enter the third level anoxic regulating reservoir；
D) finally waste water is introduced at 1 meter of height of third level anoxic regulating reservoir with fourth stage anoxic regulating reservoir junction
The fourth stage anoxic regulating reservoir；The Anaerobic Treatment to waste water is completed in fourth stage anoxic regulating reservoir.
The not equal settings of the height of level Four anoxic regulating reservoir floss hole be in order to prevent flow between anoxic regulating reservoirs at different levels
Flowing it is too urgent, incorporated in waste water to efficiently avoid in anoxic treatment link oxygen, ensured lack to the maximum extent
The regulating effect of oxygen governing loop.
Preferably, step 4）Specially：Jet aerator is set in aerobic aeration pond first, is filled with ensureing to have in waste water
The dissolved oxygen of foot；Then aerobic microbiological is put into aerobic aeration pond；It is aerobic micro- because having sufficient nutrient and dissolved oxygen in waste water
Biology is by mass propagation, and the nutrient in huge uptake water, to remove the organic matter in waste water；Meanwhile nitrogen will enter
Nitrification stage, the ammoniacal nitrogen NH4 from the waste water that the anoxic regulating reservoir comes out—N is converted to nitric acid by aerobic aeration pond
Salt nitrogen NO3—N, to be to go to denitrogenate the condition of creating.
For the sanitary wastewater similar with municipal sewage, every industrial wastewater；Processing operation before first have to carry out be
Activated sludge is cultivated, for other industrial wastewaters, in addition to cultivating activated sludge, it is also necessary to activated sludge be made to adapt to handled waste water
The characteristics of, it is tamed.The culture of activated sludge can be summarized as asynchronous training method, synchronous training method, inoculation training with domestication
Instruction method etc. is several.For the present embodiment using inoculation training method, the activated sludge trained can greatly shorten project completing the standard discharge water
The cycle of operation.Then sewage is introduced into aeration tank and is fully aerated.Cycle is opened with circulatory pool when necessary, through 1-2 days
It just will appear ambiguous floccule body in aeration after-bay, to supplement the nutrients and excluding metabolism production harmful to microorganism growth
Object will change water in time.The sewage of 50-70% is discharged by circulatory pool from aeration tank, while introducing fresh sewage, change water can between
Progress of having a rest can be also carried out continuously.Until generally changing water 1-2 times a day when mixed liquor 30min settling ratios reach 15-20%.
Industrial wastewater such as lacks nitrogen, phosphorus nutriment should put into these substances in aeration tank during domestication.Culture with
Taming two benches cannot be well-separated, intermittently changes water and continuously changing water is also often combined progress.It should be according to net when specific culture domestication
Change mechanism and actual conditions flexibly carry out.
Sewage enter aeration tank before, activated sludge acclimatization it is good after, begin to trial operation to determine optimum operating condition,
In order to keep good treatment effect to need periodically to be detected disposition.Detection project mainly has：Reflect treatment effect
Project：Inlet and outlet water BOD, COD, SS, the noxious material etc. of Inlet and outlet water；Reflect the project of sludge situation：Sludge settling ratio（SV%）
MLSS, MLVSS, SVI, dissolved oxygen, microorganism observation etc.；And the project of reflection sludge nutrition and environmental condition：Nitrogen, phosphorus, PH
Value, water temperature etc..
It is described above simply to illustrate that of the invention, it is understood that the present invention is not limited to the above embodiments, meets
The various variants of inventive concept are within protection scope of the present invention.
Claims (4)
1. a kind of wastewater treatment method, which is characterized in that described method includes following steps：
1）Waste water need to be handled and be first pooled to primary sedimentation tank, preliminary sedimentation is carried out, to remove most inorganic particulate matter in waste water
And suspended matter；
2）Wastewater supernatant fluid after preliminary sedimentation is introduced into the inverse bottom of pond for oozing regulating reservoir by closing pipe line, described in distance
Pallet is built at the inverse bottom of pond setpoint distance for oozing regulating reservoir, activated coke is put on the pallet, utilizes the absorption work(of activated coke
Unprecipitated particulate matter in water can be dispelled；
3）Wastewater supernatant fluid after the activated coke adsorption treatment is uniformly slowly introduced to anoxic regulating reservoir；In anoxic item
Under part, anaerobic bacteria mass propagation removes the partial organic substances and nitrogen in waste water under the action of anaerobic bacteria；
4）Waste water after Anaerobic Treatment is introduced into aerobic aeration pond, aerobic microbiological is put into the aerobic aeration pond；
The organic matter in waste water is removed under the action of aerobic microbiological；Meanwhile aeration tank is also the nitrification stage of nitrogen, is further gone
Except the nitrogen in waste water；Treated waste water in the aerobic aeration pond will be passed through and introduce circulatory pool, so that waste water obtains again
Secondary precipitation clarification；
5）Then it will pass through and precipitate 5 μm of pre-filtrating equipments of clear wastewater supernatant fluid introducing again, to the particle of diameter >=5 μm
Object, muddy object and suspended matter are effectively retained；
6）Using activated carbon to being adsorbed by 5 μm of pre-filtrating equipment processed waste waters, to remove the dissolving in waste water
Property organic matter, in addition, can also drive away surfactant, removing coloration, heavy metal and chlorine residue；
7）Step 6 will be passed through）In activated carbon adsorption after waste water introduce ultrafiltration apparatus carry out ultra filtration, finally obtain satisfaction
The water of discharge standard；
The anoxic regulating reservoir includes level Four regulating reservoir；The step 3）Specially：
A) wastewater supernatant fluid after the activated coke adsorption treatment is uniformly slowly introduced to first order anoxic first to adjust
Pond；
B) and then at 0.6 meter height of the first order anoxic regulating reservoir with second level anoxic regulating reservoir junction by waste water draw
Enter the second level anoxic regulating reservoir；
C) and then at 1.5 meters of height of second level anoxic regulating reservoir Yu third level anoxic regulating reservoir junction by waste water institute is introduced
State third level anoxic regulating reservoir；
D) described in finally introducing waste water at 1 meter of height of third level anoxic regulating reservoir Yu fourth stage anoxic regulating reservoir junction
Fourth stage anoxic regulating reservoir；The Anaerobic Treatment to waste water is completed in fourth stage anoxic regulating reservoir；
In the step 4）With step 5）Between be additionally provided with following steps：By treated in aerobic aeration pond waste water
Middle addition zeolite and activated carbon, to remove the ammonia nitrogen and pigment in waste water；
The step 2）In the setpoint distance be 80-100 ㎝, a diameter of 10-20mm of the activated coke, activated coke is in institute
It is 100-150 ㎝ to state the thickness accumulated on pallet.
2. wastewater treatment method according to claim 1, which is characterized in that the step 4）Specially：First described
Jet aerator is arranged in pond in aerobic aeration, to ensure the dissolved oxygen for having sufficient in waste water；Then aerobic microbiological is put into
Oxygen aeration tank；Because having sufficient nutrient and dissolved oxygen in waste water, aerobic microbiological is by mass propagation, and supporting in huge uptake water
Part, to remove the organic matter in waste water；Meanwhile nitrogen will enter the nitrification stage, what is come out from the anoxic regulating reservoir is useless
Ammoniacal nitrogen NH in water4- N is converted to nitrate nitrogen NO by aerobic aeration pond3- N, to create item to go to denitrogenate
Part.
3. wastewater treatment method according to claim 1, which is characterized in that the step 4）The middle aerobic microbiological used
For by using asynchronous training method, synchronous training method or the activated sludge for being inoculated with the culture of training method and domestication.
4. wastewater treatment method according to claim 1, which is characterized in that the step 7）In ultrafiltration apparatus operation
Reflux will be introduced again into the aerobic aeration pond, then be aerated, to avoid the discharge of unqualified waste water occurs.
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| CN100522849C (en) * | 2007-10-30 | 2009-08-05 | 云南亚太环境工程设计研究有限公司 | Method for advanced treatment of ammonia nitrogen sewage |
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| CN102247719A (en) * | 2011-06-10 | 2011-11-23 | 北京金峡超滤设备有限责任公司 | Reverse osmosis active coke filter device |
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