CN105110574A - Wastewater treatment system - Google Patents
Wastewater treatment system Download PDFInfo
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- CN105110574A CN105110574A CN201510607763.7A CN201510607763A CN105110574A CN 105110574 A CN105110574 A CN 105110574A CN 201510607763 A CN201510607763 A CN 201510607763A CN 105110574 A CN105110574 A CN 105110574A
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- equalizing tank
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Abstract
The invention discloses a wastewater treatment system which comprises a primary settling tank, a reverse osmosis adjusting tank, an anoxic adjusting tank, an aerobic aeration tank, a 5 [mu]m pre-filtering device and ultrafiltration equipment, wherein the primary settling tank, reverse osmosis adjusting tank, anoxic adjusting tank, aerobic aeration tank, 5 [mu]m pre-filtering device and ultrafiltration equipment are connected in sequence to form the wastewater treatment system. Wastewater to be treated is subjected to primary settling by the primary settling tank, reverse osmosis filtration by the reverse osmosis adjusting tank, treated in an anoxic environment of the anoxic adjusting tank, purified by aerobe in the aerobic aeration tank, and subjected to pre-filtration by the 5 [mu]m pre-filtering device, and ultrafiltration by the ultrafiltration equipment in sequence, so as to be treated into high-quality recycle water meeting the emission standard. The wastewater treatment system disclosed by the invention is low in energy consumption and low in operating cost; the physical method is adopted in the whole process, and secondary pollution is avoided; the structure of the system is small in occupied space and low in construction cost; in addition, the ultrafiltration equipment used in the system adopts an externally pressed film which is large in film area, good in pollution resistance, and excellent in cleaning restorability.
Description
Technical field
The present invention relates to technology of waste water control field, particularly relate to a kind of Waste Water Treatment.
Background technology
Along with the development of industry, Industrial Wastewater Treatment is measured and is also constantly increased with difficulty, and the waste water such as particularly coking, petrochemical industry and printing and dyeing are current more reluctant several waste water.At present, process for treating industrial waste water mainly adopts biological treatment and burning method: one, bioremediation first adopts pre-treatment, to remove grease in trade effluent and solid carbon, then carry out deep aeration materializing strategy again, to remove the ammonia in trade effluent, nitrogen, phenol, sulphur, the objectionable impurities such as sulfide and prussic acid, the treating processes required time of this biochemical processing method is more than 60 hours, to the suspended substance colloid of turbidity and colourity, the Transformatin efficiency of COD only has about 70%, it is huge that engineering is dropped on bioremediation basis, treatment system working cost is high, system treating processes is affected by environment larger, especially within the low temperature time, coking and dyeing waste water is processed, treatment effect is unstable, its two, although burning method can effectively to Industrial Wastewater Treatment, burning method sprays into precombustion in stove with combustion gas, fuel oil for main fuel, then waste water is sprayed into, waste water is at high temperature oxidized and produces nitrogen and water, thus burning method processing costs cost is quite high, and practical extending application value is low.
Therefore, how to solve the problem and become the technical problem that those skilled in the art need solution badly.
Summary of the invention
For Problems existing in background technology, the object of the present invention is to provide a kind of method of wastewater treatment, the method for wastewater treatment energy consumption of the application is low, working cost is low; And whole process is physical method, non-secondary pollution; Structures floor space is little, and construction cost is low; In addition, the outer press mold that the ultrafiltration apparatus used in the application selects membrane area large, its stain resistance is strong, and it is restorative good to clean.
The object of the invention is to be achieved through the following technical solutions:
A kind of Waste Water Treatment, described Waste Water Treatment comprises preliminary sedimentation tank, against oozing equalizing tank, anoxic equalizing tank, aerobic aeration pond, 5 μm of pre-filtrating equipments and ultrafiltration apparatus; Wherein,
Described preliminary sedimentation tank, inverse ooze equalizing tank, anoxic equalizing tank, aerobic aeration pond, 5 μm of pre-filtrating equipments and ultrafiltration apparatus and connect and compose described Waste Water Treatment successively; Pending waste water is filtered through the preliminary sedimentation of preliminary sedimentation tank, the inverse inverse infiltrate oozing equalizing tank successively, the anaerobic environment process of anoxic equalizing tank, the purification of aerobic microbiological in aerobic aeration pond, finally become the high grade reutilization water meeting emission standard after the pre-filtering of 5 μm of pre-filtrating equipments and the ultra filtration of ultrafiltration apparatus.
Further, wastewater supernatant fluid after described preliminary sedimentation tank preliminary sedimentation is introduced by closing pipe line and describedly inverse is oozed at the bottom of the pond of equalizing tank, ooze setpoint distance place at the bottom of the pond of equalizing tank and build pallet distance is inverse, activated coke put into by described pallet, utilizes the adsorption function of activated coke to dispel unprecipitated particulate matter in water.
Further, described setpoint distance is 80-100 ㎝, and the diameter of described activated coke is 10-20mm, and the thickness that activated coke is piled up on described pallet is 100-150 ㎝.
Further, described Waste Water Treatment also comprises circulatory pool, and described circulatory pool is arranged between described aerobic aeration pond and 5 μm of pre-filtrating equipments, and the waste water after the process of aerobic aeration pond is introduced into circulatory pool, is again precipitated clarification to make waste water; Then the wastewater supernatant fluid through again precipitating clarification is introduced 5 μm of pre-filtrating equipments.
Further, described anoxic equalizing tank comprises level Four equalizing tank; Level Four anoxic equalizing tank connects and composes described anoxic equalizing tank successively; Evenly first step anoxic equalizing tank is introduced lentamente through the described wastewater supernatant fluid against oozing after equalizing tank process; Then at 0.6 meter of At The Height of described first step anoxic equalizing tank and anoxic equalizing tank junction, the second stage, waste water is introduced described second stage anoxic equalizing tank; Then at 1.5 meters of At The Heights of second stage anoxic equalizing tank and third stage anoxic equalizing tank junction, waste water is introduced described third stage anoxic equalizing tank; Finally at 1 meter of At The Height of third stage anoxic equalizing tank and fourth stage anoxic equalizing tank junction, waste water is introduced described fourth stage anoxic equalizing tank; The anaerobic treatment to waste water is completed in fourth stage anoxic equalizing tank.
Further, be provided with jet aerator and aerobic microbiological in described aerobic aeration pond, described jet aerator has sufficient dissolved oxygen for ensureing in waste water; And then create conditions, to remove the organism in waste water for the amount reproduction of aerobic microbiological.
Further, described aerobic microbiological is the active sludge by adopting asynchronous training method, synchronous training method or inoculation training method to cultivate and tame.
Further, the operation bypass outlet of described ultrafiltration apparatus is connected with described aerobic aeration pond by closed conduct, and the operation backflow of ultrafiltration apparatus will be introduced again into aerobic aeration pond, carry out aeration again, to avoid the discharge that defective waste water occurs.
Further, be provided with lift pump in described fourth stage anoxic equalizing tank, by described lift pump, the wastewater supernatant fluid in fourth stage anoxic equalizing tank be transferred to described aerobic aeration pond; Described lift pump is arranged on 0.4 meter of above at the bottom of the pond of described fourth stage anoxic equalizing tank, in order to avoid precipitated impurities is transferred to aerobic aeration pond when drawing water.
Further, be provided with lift pump in described aerobic aeration pond, described lift pump is arranged on 0.5 meter of above at the bottom of the pond in aerobic aeration pond.
The present invention has following positive technique effect:
The method of wastewater treatment energy consumption of the application is low, working cost is low; And whole process is physical method, non-secondary pollution; Structures floor space is little, and construction cost is low; In addition, the outer press mold that the ultrafiltration apparatus used in the application selects membrane area large, its stain resistance is strong, and it is restorative good to clean.
Accompanying drawing explanation
Fig. 1 is the structural representation of Waste Water Treatment of the present invention.
Embodiment
Below, with reference to accompanying drawing, more fully illustrate the present invention, accompanying drawing acceptance of the bid shows exemplary embodiment of the present invention.But the present invention can be presented as multiple multi-form, and should not be construed as the exemplary embodiment being confined to describe here.But, these embodiments are provided, thus make the present invention comprehensively with complete, and scope of the present invention is fully conveyed to those of ordinary skill in the art.
For ease of illustrating, here can use such as " on ", the space relative terms such as D score " left side " " right side ", for illustration of the element of shown in figure or the feature relation relative to another element or feature.It should be understood that except the orientation shown in figure, spatial terminology is intended to comprise device different azimuth in use or operation.Such as, if the device in figure is squeezed, be stated as the element being positioned at other elements or feature D score will be positioned at other elements or feature " on ".Therefore, exemplary term D score can comprise upper and lower both orientation.Device can otherwise be located (90-degree rotation or be positioned at other orientation), and space used here illustrates relatively can correspondingly explain.
As shown in Figure 1, this application provides a kind of Waste Water Treatment, this Waste Water Treatment comprises preliminary sedimentation tank, against oozing equalizing tank, anoxic equalizing tank, aerobic aeration pond, 5 μm of pre-filtrating equipments and ultrafiltration apparatus; Wherein, preliminary sedimentation tank, inverse ooze equalizing tank, anoxic equalizing tank, aerobic aeration pond, 5 μm of pre-filtrating equipments and ultrafiltration apparatus and connect and compose described Waste Water Treatment successively; Pending waste water is filtered through the preliminary sedimentation of preliminary sedimentation tank, the inverse inverse infiltrate oozing equalizing tank successively, the anaerobic environment process of anoxic equalizing tank, the purification of aerobic microbiological in aerobic aeration pond, finally become the high grade reutilization water meeting emission standard after the pre-filtering of 5 μm of pre-filtrating equipments and the ultra filtration of ultrafiltration apparatus.
Preliminary sedimentation tank plays the effect of a preliminary sedimentation, first the sewage that sanitary sewage or trade effluent produce be pooled to preliminary sedimentation tank, effectively stop precipitation, some inorganic particulate matters and some suspended substances, under gravity, progressively be sink at the bottom of pond, reach the preliminary object removing other suspended substances of the overwhelming majority.
Wastewater supernatant fluid after preliminary sedimentation is oozed at the bottom of the pond of equalizing tank by closing pipe line introducing is inverse, inverse oozing setpoint distance place at the bottom of the pond of equalizing tank apart from described and building pallet, activated coke put into by pallet, utilizes the adsorption function of activated coke to dispel unprecipitated particulate matter in water; Ooze above 80-100 ㎝ place at the bottom of the pond of equalizing tank erect pallet inverse, pallet is put into the activated coke of 10-20 ㎜ diameter, and on pallet, puts into the thick active focus layer of 100-150 ㎝ according to sewage load; Utilize the adsorption function of activated coke to dispel unprecipitated middle macrobead thing in water, it is equivalent to grid, only little than the grid gap of general grid, can stop less organic and inorganics, colloid and suspended substance.In addition, because activated coke is weakly alkaline, can also effectively in and acidic substance in water, to play the effect of pH value regulating water.The easy microorganism such as growth bacterium on the surface of simultaneously activated coke, therefore can carry out initial breakdown to organism.
Preferably, the Waste Water Treatment of the application also comprises circulatory pool, and circulatory pool is arranged between described aerobic aeration pond and 5 μm of pre-filtrating equipments, and the waste water after the process of aerobic aeration pond is introduced into circulatory pool, is again precipitated clarification to make waste water; Then the wastewater supernatant fluid through again precipitating clarification is introduced 5 μm of pre-filtrating equipments.
Under the anoxia condition of anoxic equalizing tank, anerobe amount reproduction, removes the partial organic substances in waste water and nitrogen element under the effect of anerobe; General anoxic equalizing tank organic removal rate is 50-60%, nitrogen element starts to carry out ammonification and denitrification in sewage simultaneously, and the nitrogen element in organism is converted NH
4-n and N
2; Denitrification in anoxic equalizing tank can reach the object of denitrogenating.
Preferably, the anoxic equalizing tank of the application comprises level Four equalizing tank; Level Four anoxic equalizing tank connects and composes described anoxic equalizing tank successively; Evenly first step anoxic equalizing tank is introduced lentamente through the described wastewater supernatant fluid against oozing after equalizing tank process; Then at 0.6 meter of At The Height of described first step anoxic equalizing tank and anoxic equalizing tank junction, the second stage, waste water is introduced described second stage anoxic equalizing tank; Then at 1.5 meters of At The Heights of second stage anoxic equalizing tank and third stage anoxic equalizing tank junction, waste water is introduced described third stage anoxic equalizing tank; Finally at 1 meter of At The Height of third stage anoxic equalizing tank and fourth stage anoxic equalizing tank junction, waste water is introduced described fourth stage anoxic equalizing tank; The anaerobic treatment to waste water is completed in fourth stage anoxic equalizing tank.
It is to prevent the flowing of current between anoxic equalizing tank at different levels too urgent that the height of level Four anoxic equalizing tank discharge outlet etc. is not arranged, thus efficiently avoid oxygen in anaerobic treatment link and incorporate in waste water, ensure the regulating effect of anoxic governing loop to greatest extent; And the height of above-mentioned level Four anoxic equalizing tank discharge outlet is the optimum implementation drawn after applicant's repetition test, in these cases, current both can not be too slow, efficiently avoid again oxygen in anaerobic treatment link and incorporate in waste water.
Preferably, aerobic aeration arranges jet aerator in pond, to ensure having sufficient dissolved oxygen in waste water; Then aerobic microbiological is put into aerobic aeration pond; Because having sufficient nutrient and dissolved oxygen in waste water, aerobic microbiological is by amount reproduction, and the nutrient in huge uptake water, thus remove the organism in waste water; Meanwhile, nitrogen element will enter the nitrated stage, the ammonia-state nitrogen NH4 from described anoxic equalizing tank waste water out
-n, is converted to nitrate nitrogen NO through aerobic aeration pond
3-n, thus create condition for removing nitrogen.
For the sanitary wastewater similar with municipal effluent, every trade effluent; What first process will be carried out before running is cultivate active sludge, for other trade effluents, except cultivation active sludge, also needs to make active sludge adapt to the feature of handled waste water, tames it.The cultivation of active sludge and domestication can be summarized as asynchronous training method, synchronously train method, inoculation training method etc. several.The present embodiment adopts inoculation training method, and the active sludge of training can shorten the cycle of operation of project completing the standard discharge water widely.Then sewage is introduced in aeration tank and carry out abundant aeration.Open circulation with circulatory pool if desired, just there will be ambiguous flocs unit through 1-2 days in aeration after-bay, for supplementing the nutrients and getting rid of the meta-bolites harmful to microorganisms grow, water will be changed in time.Namely discharged the sewage of 50-70% from aeration tank by circulatory pool, introduce fresh sewage simultaneously, change water and can intermittently carry out also can carrying out continuously.Change water 1-2 time general every day until till when mixed solution 30min settling ratio reaches 15-20%.
Trade effluent should drop into these materials in aeration tank in domestication process as lacked the nutriment such as nitrogen, phosphorus.Cultivating can not be well-separated with domestication two benches, and interval is changed water and to be changed water continuously and be also often combined and carry out.Should carry out flexibly according to purification mechanism and practical situation during concrete cultivation domestication.
Preferably, the operation bypass outlet of ultrafiltration apparatus is connected with aerobic aeration pond by closed conduct, and the operation backflow of ultrafiltration apparatus will be introduced again into aerobic aeration pond, carry out aeration again, to avoid the discharge that defective waste water occurs.
Preferably, in fourth stage anoxic equalizing tank, be provided with lift pump, by lift pump, the wastewater supernatant fluid in fourth stage anoxic equalizing tank be transferred to described aerobic aeration pond; Lift pump is arranged on 0.4 meter of above at the bottom of the pond of fourth stage anoxic equalizing tank, in order to avoid precipitated impurities is transferred to aerobic aeration pond when drawing water.
Preferably, aerobic aeration is provided with lift pump in pond, and described lift pump is arranged on 0.5 meter of above at the bottom of the pond in aerobic aeration pond.
Wastewater supernatant fluid after the process of aerobic aeration pond is introduced 5 μm of pre-filtrating equipments, particulate matter, muddy thing and the suspended substance of diameter >=5 μm are effectively retained; 5 μm of pre-filtrating equipments are strainers of a set of stainless steel device, and its water inlet extracts the wastewater supernatant fluid after previous step process by working shaft, and effectively retained by the ss suspended solid of the particulate matter of >=5 μm, muddy thing and trace.
Preferably, the present embodiment utilizes gac to adsorb through described 5 μm of pre-filtrating equipment processed waste water, to remove the dissolved organic matter in waste water, in addition, also can drive away tensio-active agent, remove colourity, heavy metal and chlorine residue; Charcoal absorption is based on physical adsorption, but also has chemisorption interior.
Waste water after charcoal absorption is introduced ultrafiltration apparatus and carries out ultra filtration, be finally met the water of emission standard.Wherein, ultrafiltration apparatus can adopt Hollow Fiber Ultrafiltration machine.
Before sewage enters aeration tank, activated sludge acclimatization well after, just start trial run to determine optimum operating condition, need to keep good treatment effect regularly to detect disposition.Test item mainly contains: the project of reflection treatment effect: Inlet and outlet water BOD, COD, SS, the toxic substance etc. of Inlet and outlet water; The project of reflection mud situation: sludge settling ratio (SV%) MLSS, MLVSS, SVI, dissolved oxygen, microorganism are observed; And the project of reflection mud nutrition and envrionment conditions: nitrogen, phosphorus, pH value, water temperature etc.
Described just in order to the present invention is described above, be construed as the present invention and be not limited to above embodiment, meet the various variants of inventive concept all within protection scope of the present invention.
Claims (10)
1. a Waste Water Treatment, is characterized in that, described Waste Water Treatment comprises preliminary sedimentation tank, against oozing equalizing tank, anoxic equalizing tank, aerobic aeration pond, 5 μm of pre-filtrating equipments and ultrafiltration apparatus; Wherein,
Described preliminary sedimentation tank, inverse ooze equalizing tank, anoxic equalizing tank, aerobic aeration pond, 5 μm of pre-filtrating equipments and ultrafiltration apparatus and connect and compose described Waste Water Treatment successively; Pending waste water is filtered through the preliminary sedimentation of preliminary sedimentation tank, the inverse inverse infiltrate oozing equalizing tank successively, the anaerobic environment process of anoxic equalizing tank, the purification of aerobic microbiological in aerobic aeration pond, finally become the high grade reutilization water meeting emission standard after the pre-filtering of 5 μm of pre-filtrating equipments and the ultra filtration of ultrafiltration apparatus.
2. Waste Water Treatment according to claim 1, it is characterized in that, wastewater supernatant fluid after described preliminary sedimentation tank preliminary sedimentation is introduced by closing pipe line and describedly inverse is oozed at the bottom of the pond of equalizing tank, ooze setpoint distance place at the bottom of the pond of equalizing tank and build pallet distance is inverse, activated coke put into by described pallet, utilizes the adsorption function of activated coke to dispel unprecipitated particulate matter in water.
3. method of wastewater treatment according to claim 2, is characterized in that, described setpoint distance is 80-100 ㎝, and the diameter of described activated coke is 10-20mm, and the thickness that activated coke is piled up on described pallet is 100-150 ㎝.
4. Waste Water Treatment according to claim 1, it is characterized in that, described Waste Water Treatment also comprises circulatory pool, described circulatory pool is arranged between described aerobic aeration pond and 5 μm of pre-filtrating equipments, waste water after the process of aerobic aeration pond is introduced into circulatory pool, is again precipitated clarification to make waste water; Then the wastewater supernatant fluid through again precipitating clarification is introduced 5 μm of pre-filtrating equipments.
5. Waste Water Treatment according to claim 1, is characterized in that, described anoxic equalizing tank comprises level Four equalizing tank; Level Four anoxic equalizing tank connects and composes described anoxic equalizing tank successively; Evenly first step anoxic equalizing tank is introduced lentamente through the described wastewater supernatant fluid against oozing after equalizing tank process; Then at 0.6 meter of At The Height of described first step anoxic equalizing tank and anoxic equalizing tank junction, the second stage, waste water is introduced described second stage anoxic equalizing tank; Then at 1.5 meters of At The Heights of second stage anoxic equalizing tank and third stage anoxic equalizing tank junction, waste water is introduced described third stage anoxic equalizing tank; Finally at 1 meter of At The Height of third stage anoxic equalizing tank and fourth stage anoxic equalizing tank junction, waste water is introduced described fourth stage anoxic equalizing tank; The anaerobic treatment to waste water is completed in fourth stage anoxic equalizing tank.
6. Waste Water Treatment according to claim 1, is characterized in that, is provided with jet aerator and aerobic microbiological in described aerobic aeration pond, and described jet aerator has sufficient dissolved oxygen for ensureing in waste water; And then create conditions, to remove the organism in waste water for the amount reproduction of aerobic microbiological.
7. Waste Water Treatment according to claim 6, is characterized in that, described aerobic microbiological is the active sludge by adopting asynchronous training method, synchronous training method or inoculation training method to cultivate and tame.
8. Waste Water Treatment according to claim 1, it is characterized in that, the operation bypass outlet of described ultrafiltration apparatus is connected with described aerobic aeration pond by closed conduct, the operation backflow of ultrafiltration apparatus will be introduced again into aerobic aeration pond, carry out aeration again, to avoid the discharge that defective waste water occurs.
9. Waste Water Treatment according to claim 5, is characterized in that, is provided with lift pump, by described lift pump, the wastewater supernatant fluid in fourth stage anoxic equalizing tank is transferred to described aerobic aeration pond in described fourth stage anoxic equalizing tank; Described lift pump is arranged on 0.4 meter of above at the bottom of the pond of described fourth stage anoxic equalizing tank, in order to avoid precipitated impurities is transferred to aerobic aeration pond when drawing water.
10. Waste Water Treatment according to claim 1, is characterized in that, is provided with lift pump in described aerobic aeration pond, and described lift pump is arranged on 0.5 meter of above at the bottom of the pond in aerobic aeration pond.
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| CN107445412A (en) * | 2017-09-21 | 2017-12-08 | 上海川鼎国际贸易有限公司 | The reusing synthesized system of one kind printing composite waste and its application method |
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