CN108164084A - A kind of nitrogenous organic wastewater treating system and its method - Google Patents
A kind of nitrogenous organic wastewater treating system and its method Download PDFInfo
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- CN108164084A CN108164084A CN201711394999.2A CN201711394999A CN108164084A CN 108164084 A CN108164084 A CN 108164084A CN 201711394999 A CN201711394999 A CN 201711394999A CN 108164084 A CN108164084 A CN 108164084A
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- 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
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
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- 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
- C02F3/28—Anaerobic digestion processes
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- 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
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- 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
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Abstract
The present invention provides a kind of nitrogenous organic wastewater treating system, include sequentially connected pretreatment pool, hypoxia response pond, aerobic reaction tank, sedimentation basin by the road, the aerobic reaction tank is equipped with the first reaction zone, second reaction zone successively along water outlet direction, suspending carrier is equipped in first reaction zone, catcher is equipped in the second reaction zone.The present invention furthermore provides a kind of processing method of nitrogenous organic wastewater.A kind of nitrogenous organic wastewater treating system provided by the invention and its method, high-biomass, high load region are formed by adding suspending carrier in aerobic reaction tank front end isolated area, thus strengthen the removal of carbon and nitrogen treatment effect to high concentrated organic wastewater, the present invention creates abundant biofacies using suspending carrier and biomass is big, nitration denitrification is efficient, can inhibit sludge bulking, simple, economical, efficiently.Also it can be used for the upgrading of sewage treatment facility.
Description
Technical field
The invention belongs to technical field of biological sewage treatment, are related to a kind of nitrogenous organic wastewater treating system and its method,
More particularly to a kind of system and method using the nitrogenous organic wastewater of floating stuffing intensive treatment.
Background technology
According to statistics, end in by the end of June, 2015, wastewater treatment in China factory has 3802, and sewage treatment capacity reaches 1.61
Billion cubic meter/day.Under normal circumstances, in the nitrogenous compound containing 20-50mg/L in municipal sewage, wherein Fresh Life sewage
Nitrogen 60% be organic nitrogen, 40% is ammonia nitrogen, and the content of NO3-N and NO2-N nitrogen is less than 1%.Industrial wastewater is city dirt
One important sources of water nitrogen content, chemical fertilizer, process hides, pharmacy, are butchered and are contained in the waste water with the generations such as meat-packing plant at coke/change
There is high concentration COD to contain a large amount of nitrogen simultaneously.Nitric wastewater is directly discharged into water body or the nitric wastewater of below standard discharge is discharged into water
Cognition causes the eutrophication of water body and free ammonia is toxic to fish, free ammonia is to the lethal dose of most of fish in water body
1mg/L.In addition, the presence of ammonia can make the dosage increase of chlorine in disinfecting process in water and nitrite has carcinogenesis.It is useless
The stably reaching standard discharge of nitrogen is of great significance in water.
With becoming increasingly conspicuous for China's environmental problem, sewage drainage standard is also increasingly strict.On November 4th, 2015,《Cities and towns
Wastewater Treatment discharge standard》Exposure draft is issued.It was required from 1 day July in 2016, at newly-merged university sewage
It manages factory and performs level-one A standards.From 1 day January in 2018, the existing urban wastewater treatment firm in sensitizing range performed level-one A marks
It is accurate；Existing urban wastewater treatment firm outside sensitizing range, if receiving and processing industrial wastewater ratio<80% performs level-one B standard,
If receiving and processing industrial wastewater ratio >=80% performs secondary standard.The raising of urban wastewater treatment firm discharge standard and standard
Requirement to total nitrogen control proposes higher requirement to the removal of nitrogen in waste water.
The minimizing technology of nitrogen has the air lift of ammonia, selectivity ion transfer, break point chlorination, electrodialysis, reverse osmosis etc. in waste water
Materialization denitrogenation method and biological nitration-denitrification method.Materialization denitrogenation complex process, cost are higher, it is difficult to promote
Using.Therefore, biological denitrificaion method increasingly has been favored by people.Nitrification-denitrification biological denitrificaion method utilizes ammonifiers, nitrous
Change bacterium, nitrifier, denitrifying bacterium to turn the nitrogen in waste water by ammoniation, nitrosification, nitrification, denitrification
It turns to nitrogen and removes.Bioanalysis denitrogenation using the nitrogen in the metabolism removal waste water of microorganism, operational administrative is simple,
Economical and efficient is the main method of denitrogenation of waste water.But with the requirement to total nitrogen emission control and sewage drainage standard increasingly
Strictly, traditional biological nitration-denitrifying denitrogenation method is increasingly difficult to stably reach emission request.For this purpose, many scholars
Traditional biological denitrification method is improved, to improve bioanalysis nitric efficiency.
A kind of shock proof multiplication combined type coking waste water treatment process of Chinese invention patent CN200710042792.9 is first
Coking wastewater water quality is optimized using materialized pretreatment, is then detested using bio-carrier-activated sludge complex technique
Oxygen/anoxic/aerobic decarburization/aerobic nitrification biochemistry combined treatment, is all provided with hanging in biochemical reactor or suspension folding and expanding formula ball
Shape filler.The invention strengthens the removal of carbon and nitrogen effect of coking wastewater by setting suspension or floating stuffing in each biochemical reactor
Fruit has certain effect to the removal of carbon and nitrogen for strengthening coking wastewater.But there is also some problems for the invention：Aerobic reactor
The floating stuffing that 1 reaction zone adds has the function of that attached biological film, strengthened denitrification remove carbon, but the 1st reaction zone of aerobic reactor
Aerobic reactor zone internal cause waste water organic matter later is reduced, it is difficult to meet the growth demand of a large amount of microorganisms, therefore on floating stuffing
Biomembrane is difficult to adhere to, and the floating stuffing effect added is little and improves cost of investment.
Invention content
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of nitrogenous treatment of Organic Wastewater systems
System and its method, for solving problems of the prior art.
In order to achieve the above objects and other related objects, first aspect present invention provides a kind of nitrogenous treatment of Organic Wastewater system
System, includes sequentially connected pretreatment pool, hypoxia response pond, aerobic reaction tank, sedimentation basin by the road, the aerobic reaction tank
It is equipped with the first reaction zone, second reaction zone successively along water outlet direction, is equipped with suspending carrier in first reaction zone, described second
Catcher is equipped in reaction zone.
The nitrogenous organic wastewater treating system can carry out denitrogenation and organics removal to nitrogenous organic wastewater.
Preferably, the nitrogenous organic wastewater is one or more in sanitary sewage, garden composite wastewater etc..
Preferably, the pretreatment tank is connected through the first water inlet pipe with nitrogenous organic wastewater, and the pretreatment tank is through
One outlet pipe is connected with the water inlet in the hypoxia response pond.
Preferably, the pretreating process in the pretreatment tank is selected from oil removal technique, coagulation process, depositing technology, air supporting
One or more combinations in technique, anaerobic technique etc..
It is highly preferred that the oil removal technique refers to the difference of specific gravity using oil and water, separation removes suspended oil in waste water
A kind for the treatment of process.The oil removal technique is common process, can remove the oily substance in nitrogenous organic wastewater.
It is highly preferred that the coagulation process is directed to dosing coagulant in waste water, flocculation aid, make the tiny suspension in waste water
Absorption is combined into larger particles mutually for object or colloidal particles, the technique so as to be separated from waste water.The coagulation process is
Common process can remove fine suspension in nitrogenous organic wastewater, colloid.
It is highly preferred that the depositing technology refers to utilize the density contrast of suspended particulate and water in waste water, under the effect of gravity
Sinking effect is generated, so as to make the technique of separation of solid and liquid.The depositing technology is common process, can remove nitrogenous organic wastewater
The suspended matter of carrying.
It is highly preferred that the air-float technology refers to, by forming micro-bubble in waste water, make itself and the suspension in waste water
Particle is mutually adhered to so as to form the floating flco that apparent density is less than water, and the scum layer formed by striking off floating flco is realized solid
The technique of liquid separation.The air-float technology is common process, can detach nitrogenous organic wastewater Midst density close to or smaller than water
Fine particle.
It is highly preferred that the anaerobic technique refers under anaerobic, go using the metabolism of anaerobe
Except the technique of Pollutants in Wastewater.The anaerobic technique be common process, can improve nitrogenous organic wastewater biodegradability or
Remove the ingredients such as the phosphorus in nitrogenous organic wastewater.
Preferably, blender is equipped in the hypoxia response pond.
It is highly preferred that the condition of the blender：Agitating mode：Lasting stirring；Mixing speed：700-900r/min；It stirs
Power is mixed as 3-6w/m3。
Preferably, first water hole of hypoxia response pond is connected with first reaction zone.
Preferably, being launched in the hypoxia response pond has sludge.The sludge is through pending nitrogenous organic waste water planting
The sludge supported.Sludge in hypoxia response pond, denitrifying bacterium is dominant, carries out anti-nitration reaction, and the denitrifying bacterium is
Denitrification bacillus, Si Shi bacillus, firefly mechanism of qi hair bacillus etc., the denitrifying bacterium utilize the organic matter in nitrogenous organic wastewater by nitre
Hydrochlorate nitrogen is reduced to nitrogen so as to remove while generate basicity.
It is highly preferred that the sludge concentration in the hypoxia response pond is 3-5g/L.
First reaction zone is high load capacity reaction zone, and the volumetric loading in reaction zone is higher.
Preferably, first reaction zone is connected through the second water hole with the second reaction zone.
Preferably, the percent by volume that first reaction zone accounts for aerobic reaction tank is 15-30%.
Preferably, the outer-cover type lamination arc shaped expansion that the suspending carrier is Patent No. ZL200520040593.0 suspends
Bio-carrier.Microorganism in first reaction zone can apposition growth on the suspending carrier.
Preferably, the specific surface area of the suspending carrier is 450-600m2/m3.The large specific surface area of the suspending carrier,
Not hardened and transport, storage are convenient, have good excessively aqueous, while can intercept, wrap ups the bubble of rising, suspending carrier with
Flow can improve reaction tank oxygen-transfer efficiency while smoothly fluidisation.
It is highly preferred that the specific surface area of the suspending carrier is 500m2/m3。
Preferably, the percent by volume that the suspending carrier accounts for the first reaction zone is 20-30%.
The second reaction zone is underload reaction zone, and the volumetric loading in reaction zone is relatively low.
Preferably, the second reaction zone includes at least one reaction zone.
It is highly preferred that the second reaction zone includes A reaction zones and B reaction zones successively along water outlet direction.
It is further preferred that the A reaction zones are connected through third water hole with the B reaction zones.
It is further preferred that the ratio between volume between the A reaction zones and the B reaction zones is 1：1.
Preferably, being launched in the aerobic reaction tank has sludge, i.e., in described first reaction zone and the second reaction zone
Launching has sludge.The sludge is the sludge through pending nitrogenous organic wastewater culture.The dirt of first reaction zone
Except carbon microorganism is dominant in mud, most of organic matter in nitrogenous organic wastewater is removed.Sludge in the second reaction zone
Middle nitrifier is dominant, carries out nitration reaction, and the nitrifier is nitrococcus, nitrifier etc., and the nitrifier has nitrogenous
Ammoniacal nitrogen in machine waste water is converted into nitrite nitrogen, nitrate nitrogen, while removes the organic matter in waste water.
It is highly preferred that the sludge concentration in first reaction zone in suspending carrier is 5-9g/L.
It is highly preferred that the sludge concentration in first reaction zone outside suspending carrier is 3.4-6.2g/L.
It is highly preferred that the sludge concentration in the second reaction zone is 3-5g/L.
It is further preferred that the sludge concentration in the A reaction zones is 3-5g/L.
It is further preferred that the sludge concentration in the B reaction zones is 3-5g/L.
Preferably, the catcher is located at second water hole at the water outlet of the second reaction zone side.It is described
Catcher is to capture the suspending carrier or suspending carrier fragment of the water outlet outflow of the first reaction zone, to prevent from influencing follow-up equipment
Normal operation.
It is highly preferred that the catcher is located at second water hole at the water outlet of the A reaction zones side.
Preferably, the catcher includes silk screen, handle, connector, described connector one end and the side phase of silk screen
Connection, the connector other end and the second water hole detachable connection, described handle one end are connected with the opposite side of silk screen
It connects, the handle other end is stretched out outside second reaction zone upwards.
It is highly preferred that the aperture of the silk screen is 3-6cm.
It is highly preferred that the material of the silk screen is 316L type stainless steels.
It is highly preferred that the catcher periodically proposes to be cleared up outside second reaction zone by handle, clearance time interval
For the 1-3 months.
Preferably, the hypoxia response pond and the bottom of aerobic reaction tank are equipped with aerator, and the aerator includes
There are aeration tube, aeration pipe holder, fine bubble diffuser, the aeration tube is fixed on the hypoxia response pond by aeration pipe holder
With the bottom of aerobic reaction tank, the fine bubble diffuser is arranged in the aeration tube.
It is highly preferred that the fine bubble diffuser is commercially available fine bubble diffuser, it is specific such as Sheng Da plastics Co., Ltd
The microporous diaphragm aerator of production.Fine bubble diffuser has many advantages, such as that oxygen transmission efficiency is high, exempts from blocking, is corrosion-resistant.It is described
Dissolved oxygen needed for aerator offer anoxic, aerobic reaction tank.
Preferably, dissolved oxygen concentration≤0.5mg/L in the hypoxia response pond.It is highly preferred that the hypoxia response pond
Interior dissolved oxygen concentration 0.2-0.5mg/L.
Preferably, the dissolved oxygen concentration in first reaction zone is 0.2-1.0mg/L.
Preferably, dissolved oxygen concentration >=2mg/L in the second reaction zone.It is highly preferred that in the second reaction zone
Dissolved oxygen concentration be 2-3mg/L.
It is highly preferred that dissolved oxygen concentration >=2mg/L in the A reaction zones.It is further preferred that in the A reaction zones
Dissolved oxygen concentration be 2-3mg/L.
It is highly preferred that dissolved oxygen concentration >=2mg/L in the B reaction zones.It is further preferred that in the B reaction zones
Dissolved oxygen concentration be 2-3mg/L.
Preferably, the second reaction zone is connected by water outlet through the second outlet pipe with sedimentation basin side.
It is highly preferred that the water outlet is equipped with effluent recycling pipe, described effluent recycling pipe one end is connected with water outlet,
The effluent recycling pipe other end is connected with water inlet.
It is further preferred that the effluent recycling amount in the effluent recycling pipe is the 100-300% of flow of inlet water.It is described into
Water flow refers to the flow of inlet water for entering water inlet through the first outlet pipe from pretreatment pool.
It is highly preferred that the water flow in second outlet pipe is identical with flow of inlet water.
Preferably, third outlet pipe, sludge out pipe are additionally provided on the sedimentation basin.
It is highly preferred that described third outlet pipe one end is connected with the sedimentation basin side.
It is highly preferred that described sludge out pipe one end is connected with the bottom of the sedimentation basin, the sludge out pipe other end and dirt
Mud pipe is connected.
It is further preferred that the sludge pipe includes excess sludge pipe, mud return line, described excess sludge pipe one end
It is connected with the sludge out pipe, described mud return line one end is connected with the sludge out pipe, the mud return line other end
It is connected with water inlet.
Most preferably, the mud return line upper edge reflux direction is equipped with sludge reflux pump, sludge reflux regulating valve successively.
The sludge reflux pump is commercially available corrosion resisting centrifugal pump.The sludge reflux regulating valve is butterfly valve, and the sludge reflux is adjusted
The material of valve is SS304.
Most preferably, the sludge reflux amount in the mud return line is the 50-100% of flow of inlet water.The feed water flow
Amount refers to the flow of inlet water for entering water inlet through the first outlet pipe from pretreatment pool.Sludge reflux amount in the mud return line
It is controlled by sludge reflux valve.
Second aspect of the present invention provides a kind of processing method of nitrogenous organic wastewater, includes the following steps：
1) sludge is launched in hypoxia response pond and aerobic reaction tank respectively, by nitrogenous organic wastewater through the first water inlet pipe stream
Enter after pretreatment pool pre-processed, pass through water inlet through the first outlet pipe and flow into hypoxia response pond and carry out anoxic treatment；
Preferably, the technique of the pretreatment is selected from oil removal technique, coagulation process, depositing technology, air-float technology, anaerobism work
One or more combinations in skill etc..The pretreating process is different according to the water quality of nitrogenous organic wastewater, selects different process
Nitrogenous organic wastewater is pre-processed, so as to optimize the water quality of nitrogenous organic wastewater.
Preferably, the condition of the anoxic treatment is：PH is 7-8, and temperature is 20-30 DEG C, residence time 1.5-3h.
Preferably, the sludge concentration in the hypoxia response pond is 3-5g/L.
Preferably, blender is equipped in the hypoxia response pond.
It is highly preferred that the condition of the blender：Agitating mode：Lasting stirring；Mixing speed：700-900r/min；It stirs
Power is mixed as 3-6w/m3。
Preferably, dissolved oxygen concentration≤0.5mg/L in the hypoxia response pond.It is highly preferred that the hypoxia response pond
Interior dissolved oxygen concentration 0.2-0.5mg/L.
2) by the waste water after anoxic treatment, the first reaction zone of aerobic reaction tank is flowed into through the first water hole, is being suspended
It carries out first time Aerobic Process for Treatment under carrier function, and treated waste water is flowed into second reaction zone through the second water hole and carries out the
Secondary Aerobic Process for Treatment；
Preferably, the condition of the first time Aerobic Process for Treatment is：PH is 6.5-8.5, and temperature is 20-30 DEG C.
Preferably, the percent by volume that first reaction zone accounts for aerobic reaction tank is 15-30%.
Preferably, the specific surface area of the suspending carrier is 450-600m2/m3.It is highly preferred that the ratio of the suspending carrier
Surface area is 500m2/m3。
Preferably, the percent by volume that the suspending carrier accounts for the first reaction zone is 20-30%.
Preferably, the sludge concentration in first reaction zone in suspending carrier is 5-9g/L.
Preferably, the sludge concentration in first reaction zone outside suspending carrier is 3.4-6.2g/L.
Preferably, the second reaction zone includes at least one reaction zone.
It is highly preferred that the second reaction zone includes A reaction zones and B reaction zones successively along water outlet direction.
It is further preferred that the A reaction zones are connected through third water hole with the B reaction zones.
It is further preferred that the ratio between volume between the A reaction zones and the B reaction zones is 1：1.
Preferably, the condition of second of Aerobic Process for Treatment is：PH is 6.5-8.5, and temperature is 20-30 DEG C, basicity >=
80mg/L。
Preferably, the sludge concentration in the second reaction zone is 3-5g/L.
It is highly preferred that the sludge concentration in the A reaction zones is 3-5g/L.
It is highly preferred that the sludge concentration in the B reaction zones is 3-5g/L.
Preferably, catcher is equipped in the second reaction zone, the catcher includes silk screen, handle, connector, institute
It states connector one end with the side of silk screen to be connected, the connector other end and the second water hole detachable connection are described
Handle one end is connected with the opposite side of silk screen, and the handle other end is stretched out outside second reaction zone upwards.
It is highly preferred that the catcher is located at second water hole at the water outlet of the A reaction zones side.
Preferably, the hypoxia response pond and the bottom of aerobic reaction tank are equipped with aerator, and the aerator includes
There are aeration tube, aeration pipe holder, fine bubble diffuser, the aeration tube is fixed on the hypoxia response pond by aeration pipe holder
With the bottom of aerobic reaction tank, the fine bubble diffuser is arranged in the aeration tube.The aerator is capable of providing scarce
Dissolved oxygen needed for oxygen, aerobic reaction tank.
Preferably, the dissolved oxygen concentration in first reaction zone is 0.2-1.0mg/L.
Preferably, dissolved oxygen concentration >=2mg/L in the second reaction zone.It is highly preferred that in the second reaction zone
Dissolved oxygen concentration be 2-3mg/L.
It is highly preferred that dissolved oxygen concentration >=2mg/L in the A reaction zones.It is further preferred that in the A reaction zones
Dissolved oxygen concentration be 2-3mg/L.
It is highly preferred that dissolved oxygen concentration >=2mg/L in the B reaction zones.It is further preferred that in the B reaction zones
Dissolved oxygen concentration be 2-3mg/L.
3) by the waste water after Aerobic Process for Treatment, the second outlet pipe and effluent recycling pipe are separately flowed by water outlet, one
Waste water is divided to flow into sedimentation basin through the second outlet pipe, another part waste water is back to water inlet through effluent recycling pipe；
Preferably, the effluent recycling amount in the effluent recycling pipe is the 100-300% of flow of inlet water.It is described be back into
Nitrite nitrogen, the nitrate nitrogen that the waste water at the mouth of a river can generate aerobic reaction tank are back in hypoxia response pond and are reduced to
Nitrogen, it is ensured that water outlet total nitrogen is up to standard.
Preferably, the water flow in second outlet pipe is identical with flow of inlet water.
4) waste water that will flow into sedimentation basin carries out mud-water separation, and supernatant is discharged through third outlet pipe, and sludge is from sedimentation basin
Bottom flows into sludge pipe through sludge out pipe, and in sludge pipe, a part of sludge is discharged through excess sludge pipe, and another part sludge is through dirt
Mud return duct is back to water inlet.
Preferably, the sludge reflux amount in the mud return line is the 50-100% of flow of inlet water.It is described be back into
The sludge at the mouth of a river, which can be ensured that, has suitable sludge quantity in hypoxia response pond and aerobic reaction tank.
As described above, a kind of nitrogenous organic wastewater treating system provided by the invention and its method, are created using floating stuffing
It makes abundant biofacies and biomass is big, nitration denitrification is efficient, can inhibit sludge bulking and without potential risk, simple, warp
It helps, efficiently.Specifically have the beneficial effect that：
(1) a kind of nitrogenous organic wastewater treating system provided by the invention and its method, by aerobic reaction tank front end
It adds suspending carrier and forms high-biomass, high load region, thus strengthen the removal of carbon and nitrogen treatment effect to high concentrated organic wastewater.
Organic wastewater concentration is high i.e. in the first reaction zone of aerobic reaction tank, belongs to Super matrix area, in the first reaction of aerobic reaction tank
Add suspending carrier in area, easy attached biological film and biomass is big, biofacies enriches, removal of carbon and nitrogen efficiency on suspending carrier
It is high.
(2) a kind of nitrogenous organic wastewater treating system provided by the invention and its method, pass through the first of aerobic reaction tank
Activated sludge and the biomembrane being attached on suspending carrier coexist in reaction zone, and microorganism concn is big, so as to remove in waste water
Most of organic matter, the nitrification of strengthening subsequent aerobic stage.
(3) a kind of nitrogenous organic wastewater treating system provided by the invention and its method, by being attached on suspending carrier
Biofilm thickness it is big, by oxygen transmission restricted, be unevenly distributed from oxygen concentration on biofilm surface to the different levels of its kernel
It is even.In biofilm surface nitrifier dominance, it is substantially carried out nitration reaction；Denitrifying bacterium is dominant inside biomembrane, mainly
Carry out anti-nitration reaction.Nitrification, denitrification are carried out at the same time on biomembrane, nitric efficiency is high, further reduces water outlet total nitrogen contains
Amount.
(4) a kind of nitrogenous organic wastewater treating system provided by the invention and its method, pass through the first of aerobic reaction tank
Reaction zone forms transition region between hypoxia response pond and aerobic reaction tank, is conducive to denitrifying progress, while can effectively press down
Der Pilz growth processed, avoids the generation of sludge bulking.
(5) a kind of nitrogenous organic wastewater treating system provided by the invention and its method, due to the first of aerobic reaction tank
Organic concentration is high in reaction zone, can meet the matrix demand of a large amount of microorganisms growths, and the matrix in follow-up second reaction zone
Concentration is difficult to the growth for meeting a large amount of biomembranes, therefore the present invention only adds suspending carrier in the first reaction zone of aerobic reaction tank,
Meet cost-effective while removal effect, economical and efficient.
(6) a kind of nitrogenous organic wastewater treating system provided by the invention and its method, are adding the aerobic of suspending carrier
At the apopore of first reaction zone of reaction tank set suspending carrier catcher, can capture because corrosion or the time it is remote due to it is broken
Suspending carrier, adding for suspending carrier is avoided to impact the normal operation of follow-up equipment, significantly promote suspending carrier exist
The engineering application of field of waste water treatment.
(7) a kind of nitrogenous organic wastewater treating system provided by the invention and its method, can meet increasingly strict waste water
Denitrogenation processing requirement, also available for the upgrading of sewage treatment facility.
Description of the drawings
Fig. 1 is shown as a kind of nitrogenous organic wastewater treating system of the present invention and its integrated artistic flow chart of method.
Fig. 2 is shown as a kind of layout drawing of the aerator of nitrogenous organic wastewater treating system of the present invention.
Fig. 3 is shown as a kind of catcher layout drawing of the floating stuffing of nitrogenous organic wastewater treating system of the present invention.
Reference numeral
1 pretreatment pool
11 first water inlet pipes
12 first outlet pipes
2 hypoxia response ponds
21 blenders
22 first water holes
23 water inlets
3 aerobic reaction tanks
31 first reaction zones
32 second reaction zone
321 A reaction zones
322 B reaction zones
323 water outlets
33 suspending carriers
34 second water holes
35 third water holes
36 second outlet pipes
37 catchers
371 handles
372 connectors
373 silk screens
4 sedimentation basins
41 third outlet pipes
42 sludge out pipe
5 effluent recycling pipes
6 sludge pipes
61 excess sludge pipes
62 mud return lines
7 sludge reflux pumps
8 sludge reflux regulating valves
9 aerators
91 aeration tubes
92 fine bubble diffusers
93 aeration pipe holders
Specific embodiment
With reference to specific embodiment, the present invention is further explained, it should be appreciated that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.
Illustrate embodiments of the present invention below by way of specific specific example, those skilled in the art can be by this specification
Disclosed content understands other advantages and effect of the present invention easily.The present invention can also pass through in addition different specific realities
The mode of applying is embodied or practiced, the various details in this specification can also be based on different viewpoints with application, without departing from
Various modifications or alterations are carried out under the spirit of the present invention.
As shown in Figure 1, a kind of nitrogenous organic wastewater treating system used in following embodiment, includes by the road successively
Pretreatment pool, hypoxia response pond, aerobic reaction tank, the sedimentation basin of connection, the aerobic reaction tank are equipped with successively along water outlet direction
First reaction zone, second reaction zone, first reaction zone is interior to be equipped with suspending carrier, is equipped with and captures in the second reaction zone
Device.
In a preferred embodiment, as shown in Figure 1, the pretreatment tank is through the first water inlet pipe and nitrogenous organic wastewater
It is connected, the pretreatment tank is connected through the first outlet pipe with the water inlet in the hypoxia response pond.
In a preferred embodiment, the pretreating process in the pretreatment tank be selected from oil removal technique, coagulation process,
One or more combinations in depositing technology, air-float technology, anaerobic technique etc..
In a preferred embodiment, as shown in Figure 1, being equipped with blender in the hypoxia response pond.The blender
Condition：Agitating mode：Lasting stirring；Mixing speed：700-900r/min；Power of agitator is 3-6w/m3.The hypoxia response
The first water hole of pond is connected with first reaction zone.
In a preferred embodiment, being launched in the hypoxia response pond has sludge.Dirt in the hypoxia response pond
A concentration of 3-5g/L of mud.
In a preferred embodiment, as shown in Figure 1, first reaction zone is anti-with described second through the second water hole
Area is answered to be connected.The percent by volume that first reaction zone accounts for aerobic reaction tank is 15-30%.
In a preferred embodiment, as shown in Figure 1, the suspending carrier is Patent No. ZL200520040593.0
Outer cover type arc stack suspension organism carrier.The specific surface area of the suspending carrier is 450-600m2/m3, preferably
500m2/m3.The percent by volume that the suspending carrier accounts for the first reaction zone is 20-30%.
In a preferred embodiment, as shown in Figure 1, the second reaction zone includes at least one reaction zone.Its
In, the second reaction zone includes A reaction zones and B reaction zones successively along water outlet direction.The A reaction zones are through third water hole
It is connected with the B reaction zones.The ratio between volume between the A reaction zones and the B reaction zones is 1：1.
In a preferred embodiment, as shown in Figure 1, being launched in the aerobic reaction tank has sludge, i.e., described first
Being launched in reaction zone and the second reaction zone has sludge.Sludge concentration in first reaction zone in suspending carrier is 5-
9g/L.Sludge concentration in first reaction zone outside suspending carrier is 3.4-6.2g/L.Sludge in the second reaction zone
A concentration of 3-5g/L, it is preferable that sludge concentration in the A reaction zones is 3-5g/L, and the sludge concentration in the B reaction zones is
3-5g/L。
In a preferred embodiment, as shown in Figure 1, the catcher is located at second water hole described second
At the water outlet of reaction zone side.Further, the catcher is located at the second water hole going out in the A reaction zones side
At water.As shown in figure 3, the catcher includes silk screen, handle, connector, described connector one end and the side phase of silk screen
Connection, the connector other end and the second water hole detachable connection, described handle one end are connected with the opposite side of silk screen
It connects, the handle other end is stretched out outside second reaction zone upwards.The aperture of the silk screen is 3-6cm.The material of the silk screen is
316L type stainless steels.The catcher periodically proposes to be cleared up outside second reaction zone by handle, and 1-3 is divided between clearance time
Month.
In a preferred embodiment, as shown in Fig. 2, the hypoxia response pond and the bottom of aerobic reaction tank are equipped with and expose
Device of air, the aerator include aeration tube, aeration pipe holder, fine bubble diffuser, and the aeration tube passes through aeration tube
Stent is fixed on the hypoxia response pond and the bottom of aerobic reaction tank, and the fine bubble diffuser is arranged on the aeration tube
On.Dissolved oxygen concentration≤0.5mg/L in the hypoxia response pond, preferably 0.2-0.5mg/L.In first reaction zone
Dissolved oxygen concentration is 0.2-1.0mg/L.Dissolved oxygen concentration >=2mg/L in the second reaction zone, preferably 2-3mg/L；I.e.
Dissolved oxygen concentration in the A reaction zones and B reaction zones >=2mg/L, preferably 2-3mg/L.
In a preferred embodiment, as shown in Figure 1, the second reaction zone by water outlet through the second outlet pipe with
Sedimentation basin side is connected.The water outlet is equipped with effluent recycling pipe, and described effluent recycling pipe one end is connected with water outlet,
The effluent recycling pipe other end is connected with water inlet.Effluent recycling amount in the effluent recycling pipe is flow of inlet water
100-300%.Water flow in second outlet pipe is identical with flow of inlet water.
In a preferred embodiment, as shown in Figure 1, being additionally provided with third outlet pipe, sludge out pipe on the sedimentation basin.Institute
Third outlet pipe one end is stated with the sedimentation basin side to be connected.Described sludge out pipe one end is connected with the bottom of the sedimentation basin
Logical, the sludge out pipe other end is connected with sludge pipe.The sludge pipe includes excess sludge pipe, mud return line, described
Excess sludge pipe one end is connected with the sludge out pipe, and described mud return line one end is connected with the sludge out pipe, the dirt
The mud return duct other end is connected with water inlet.The mud return line upper edge reflux direction is equipped with sludge reflux pump, dirt successively
Mud return valve.Sludge reflux amount in the mud return line is the 50-100% of flow of inlet water.The mud return line
In sludge reflux amount controlled by sludge reflux valve.
The present invention also provides a kind of processing methods of nitrogenous organic wastewater, include the following steps：
1) sludge is launched in hypoxia response pond and aerobic reaction tank respectively, by nitrogenous organic wastewater through the first water inlet pipe stream
Enter after pretreatment pool pre-processed, pass through water inlet through the first outlet pipe and flow into hypoxia response pond and carry out anoxic treatment；
2) by the waste water in step 1) after anoxic treatment, the first reaction of aerobic reaction tank is flowed into through the first water hole
Area carries out first time Aerobic Process for Treatment, and waste water flows into second instead through the second water hole by treated under suspending carrier effect
Area is answered to carry out second of Aerobic Process for Treatment；
3) by the waste water in step 2) after Aerobic Process for Treatment, the second outlet pipe and effluent recycling are separately flowed by water outlet
Pipe, a part of waste water flow into sedimentation basin through the second outlet pipe, and another part waste water is back to water inlet through effluent recycling pipe；
4) waste water for sedimentation basin being flowed into step 3) carries out mud-water separation, and supernatant is discharged through third outlet pipe, sludge
Sludge pipe is flowed into from sedimentation basin bottom through sludge out pipe, in sludge pipe, a part of sludge is discharged through excess sludge pipe, another part
Sludge is back to water inlet through mud return line.
Above-mentioned steps 1) in, the condition of anoxic treatment is：PH is 7-8, and temperature is 20-30 DEG C, residence time 1.5-3h.
Above-mentioned steps 2) in, the condition of first time Aerobic Process for Treatment is：PH is 6.5-8.5, and temperature is 20-30 DEG C；Second of Aerobic Process for Treatment
Condition be：PH is 6.5-8.5, and temperature is 20-30 DEG C, basicity >=80mg/L.
Embodiment 1
Certain technique garden composite wastewater processing engineering using the processing system in the present invention to nitrogenous organic wastewater at
Reason, first launches sludge in hypoxia response pond and aerobic reaction tank respectively, selects sludge as through pending nitrogenous organic wastewater
The sludge cultivated.Nitrogenous organic wastewater is flowed into pretreatment pool through the first water inlet pipe again to pre-process, wherein, according to nitrogenous
The water quality of organic wastewater is different, selects pretreating process, wherein, the technique of pretreatment is selected from oil removal technique, coagulation process, precipitation
One or more combinations in technique, air-float technology, anaerobic technique etc..Then, by pretreated waste water through the first outlet pipe
Hypoxia response pond is flowed by water inlet and carries out anoxic treatment, blender persistently stirs in hypoxia response pond, and mixing speed is
700-900r/min, power of agitator 3-6w/m3.The condition of anoxic treatment is in hypoxia response pond：PH is 7-8, temperature 20-
30 DEG C, residence time 1.5-3h.In hypoxia response pond sludge concentration be 3-5g/L, dissolved oxygen concentration≤0.5mg/L, preferably
0.2-0.5mg/L。
Waste water after anoxic treatment flows into the first reaction zone of aerobic reaction tank through the first water hole, is carried suspending
Body effect is lower to carry out first time Aerobic Process for Treatment, wherein, the percent by volume that the first reaction zone accounts for aerobic reaction tank is 15-30%,
Dissolved oxygen concentration in first reaction zone is 0.2-1.0mg/L.The specific surface area of suspending carrier is 450-600m2/m3, suspend and carry
Body accounts for the percent by volume of the first reaction zone as 20-30%, and the sludge concentration in the first reaction zone in suspending carrier is 5-9g/L,
Sludge concentration in first reaction zone outside suspending carrier is 3.4-6.2g/L.The condition of first time Aerobic Process for Treatment is：PH is 6.5-
8.5, temperature is 20-30 DEG C.
It is aerobic for the second time that the waste water after first time Aerobic Process for Treatment is flowed into second reaction zone progress through the second water hole again
Processing, the condition of second of Aerobic Process for Treatment are：PH is 6.5-8.5, and temperature is 20-30 DEG C, basicity >=80mg/L.Wherein, second
Reaction zone includes the ratio between A reaction zones and B reaction zones, the volume between A reaction zones and the B reaction zones successively along water outlet direction
It is 1：1, A reaction zone is connected through third water hole with the B reaction zones.In A reaction zones, dissolved oxygen concentration >=2mg/L is dirty
A concentration of 3-5g/L of mud.In B reaction zones, dissolved oxygen concentration >=2mg/L, sludge concentration 3-5g/L.Positioned at the second water hole
Catcher is equipped at the water outlet of second reaction zone side, the aperture of silk screen is 3-6cm in catcher, and catcher is every the 1-3 months
It is proposed that second reaction zone is cleared up.Above-mentioned hypoxia response pond and the bottom of aerobic reaction tank are equipped with aerator, generate dissolving
Oxygen.
Again by the waste water after second of Aerobic Process for Treatment, the second outlet pipe and effluent recycling are separately flowed by water outlet
Pipe, a part of waste water flow into sedimentation basin through the second outlet pipe, and another part waste water is back to water inlet through effluent recycling pipe,
In, effluent recycling amount in effluent recycling pipe is the 100-300% of flow of inlet water, water flow and water inlet in the second outlet pipe
Flow is identical.It will flow into the waste water of sedimentation basin, carry out mud-water separation, supernatant is discharged through third outlet pipe, and sludge is from sedimentation basin
Bottom flows into sludge pipe through sludge out pipe, and in sludge pipe, a part of sludge is discharged through excess sludge pipe, and another part sludge is through dirt
Mud return duct is back to water inlet, wherein, the sludge reflux amount in mud return line is the 50-100% of flow of inlet water, remaining dirty
Mud discharge in mud pipe is identical with flow of inlet water, sludge reflux amount by sludge reflux valve and sludge reflux adjust valve regulation,
Control.
After testing, the sludge concentration in the first reaction zone in aerobic reaction tank meets technology requirement, and sludge color is black
Brown, the sludge concentration of A reaction zones and B reaction zones meets technology requirement, sludge color in the second reaction zone of aerobic reaction tank
For yellowish-brown.The biomembrane adhered on the suspending carrier of the first reaction zone of aerobic reaction tank is taken to carry out microscopy, is given birth on biomembrane
With bacterium, fungi, protozoan, metazoa etc., biofacies enriches.The nitrogenous treatment of Organic Wastewater engineering is by continuous more
After the operation in year, ammonia nitrogen and total nitrogen content are discharged, stablizes and meets《Coking chemistry emission of industrial pollutants standard》(GB16171-
2012) requirement of ammonia nitrogen≤10mg/L, total nitrogen≤20mg/L as defined in table 3.
Embodiment 2
Certain technique garden composite wastewater processing engineering using the processing system in the present invention to nitrogenous coking wastewater at
Reason first launches the sludge generated from certain disposal of coking plant waste water engineering in hypoxia response pond and aerobic reaction tank respectively.Again
According to the water quality of nitrogenous coking wastewater, nitrogenous coking wastewater is flowed into oil removal+air supporting+anaerobism combination pretreatment through the first water inlet pipe
Pond is pre-processed.Then, pretreated waste water is flowed into hypoxia response pond by water inlet through the first outlet pipe to lack
Oxygen is handled, and blender persistently stirs in hypoxia response pond, mixing speed 800r/min, power of agitator 5w/m3.Hypoxia response
The condition of anoxic treatment is in pond：PH is 8.0, and reaction temperature is 27 DEG C, residence time 2h, sludge concentration 5g/L, dissolving
Oxygen concentration is 0.2mg/L.
Waste water after anoxic treatment flows into the first reaction zone of aerobic reaction tank through the first water hole, is carried suspending
Body effect is lower to carry out first time Aerobic Process for Treatment, wherein, the percent by volume that the first reaction zone accounts for aerobic reaction tank is 20%, first
Dissolved oxygen concentration in reaction zone is 0.5mg/L.The specific surface area of suspending carrier is 500m2/m3, suspending carrier accounts for the first reaction
The percent by volume in area is 20%, and the sludge concentration in the first reaction zone in suspending carrier is 7g/L.First time Aerobic Process for Treatment
Condition is：PH is 7.5, and reaction temperature is 25 DEG C.
It is aerobic for the second time that the waste water after first time Aerobic Process for Treatment is flowed into second reaction zone progress through the second water hole again
Processing, the condition of second of Aerobic Process for Treatment are：PH is 7.5, and reaction temperature is 24.3 DEG C, basicity 150mg/L.Wherein, second
Reaction zone includes the ratio between A reaction zones and B reaction zones, the volume between A reaction zones and the B reaction zones successively along water outlet direction
It is 1：1, A reaction zone is connected through third water hole with the B reaction zones.In A reaction zones, dissolved oxygen concentration 2mg/L.
In B reaction zones, dissolved oxygen concentration 2.5mg/L.It is equipped with and captures at the water outlet of second reaction zone side positioned at the second water hole
Device, the aperture of silk screen is 4cm in catcher, and catcher proposes that second reaction zone is cleared up every March.Above-mentioned hypoxia response pond
Aerator is equipped with the bottom of aerobic reaction tank, the dissolved oxygen needed for it is provided.
Again by the waste water after second of Aerobic Process for Treatment, the second outlet pipe and effluent recycling are separately flowed by water outlet
Pipe, a part of waste water flow into sedimentation basin through the second outlet pipe, and another part waste water is back to water inlet through effluent recycling pipe,
In, the effluent recycling amount in effluent recycling pipe is the 300% of flow of inlet water, water flow and flow of inlet water in the second outlet pipe
It is identical.It will flow into the waste water of sedimentation basin, carry out mud-water separation, supernatant is discharged through third outlet pipe, and sludge is from sedimentation basin bottom
Sludge pipe is flowed into through sludge out pipe, in sludge pipe, a part of sludge is discharged through excess sludge pipe, and another part sludge is returned through sludge
Flow tube is back to water inlet, wherein, the sludge reflux amount in mud return line is the 100% of flow of inlet water, and sludge reflux amount is led to
It crosses sludge reflux valve and sludge reflux adjusts valve regulation, control.
After testing, the sludge concentration in the first reaction zone in aerobic reaction tank is 6mg/L, and sludge color is dark brown,
The sludge concentration of A reaction zones and B reaction zones is 3mg/L in the second reaction zone of aerobic reaction tank, and sludge color is yellowish-brown.It takes
The biomembrane that adheres on the suspending carrier of first reaction zone of aerobic reaction tank carries out microscopy, on biomembrane growth have bacterium, true
Bacterium, protozoan, metazoa etc., biofacies enriches.The nitrogenous treatment of Organic Wastewater engineering after the operation of continuous 2 years,
Water outlet ammonia nitrogen is 8mg/L, total nitrogen 13mg/L, stablizes and meets《Coking chemistry emission of industrial pollutants standard》(GB16171-
2012) requirement of ammonia nitrogen≤10mg/L, total nitrogen≤20mg/L as defined in table 3.
Embodiment 3
Certain technique garden composite wastewater processing engineering using the processing system in the present invention to nitrogenous organic wastewater at
Reason, first launches sludge in hypoxia response pond and aerobic reaction tank respectively, selects sludge as through pending nitrogenous organic wastewater
The sludge cultivated.Further according to the water quality of the industrial park composite wastewater, composite wastewater is flowed into coagulation+heavy through the first water inlet pipe
Shallow lake+anaerobism combination pretreatment pool is pre-processed.Then, pretreated waste water is flowed into through the first outlet pipe by water inlet
Hypoxia response pond carries out anoxic treatment, and blender persistently stirs in hypoxia response pond, mixing speed 700r/min, power of agitator
For 3w/m3.The condition of anoxic treatment is in hypoxia response pond：PH is 7.4, and reaction temperature is 28 DEG C, residence time 1.8h, dirty
Mud a concentration of 4g/L, dissolved oxygen concentration 0.3mg/L.
Waste water after anoxic treatment flows into the first reaction zone of aerobic reaction tank through the first water hole, is carried suspending
Body effect is lower to carry out first time Aerobic Process for Treatment, wherein, the percent by volume that the first reaction zone accounts for aerobic reaction tank is 15%, first
Dissolved oxygen concentration in reaction zone is 0.8mg/L.The specific surface area of suspending carrier is 550m2/m3, suspending carrier accounts for the first reaction
The percent by volume in area is 20%, and the sludge concentration in the first reaction zone in suspending carrier is 6.3g/L, is hanged in the first reaction zone
Sludge concentration outside float carrier is 4.8g/L.The condition of first time Aerobic Process for Treatment is：PH is 7.8, and reaction temperature is 26 DEG C.
It is aerobic for the second time that the waste water after first time Aerobic Process for Treatment is flowed into second reaction zone progress through the second water hole again
Processing, the condition of second of Aerobic Process for Treatment are：PH is 7.8, and reaction temperature is 25.5 DEG C, basicity 100mg/L.Wherein, second
Reaction zone includes the ratio between A reaction zones and B reaction zones, the volume between A reaction zones and the B reaction zones successively along water outlet direction
It is 1：1, A reaction zone is connected through third water hole with the B reaction zones.In A reaction zones, dissolved oxygen concentration 2.5mg/L,
Sludge concentration is 4g/L.In B reaction zones, dissolved oxygen concentration >=2.8mg/L, sludge concentration 4g/L.Positioned at the second water hole
Catcher is equipped at the water outlet of second reaction zone side, the aperture of silk screen is 6cm in catcher, and catcher is proposed every March
Second reaction zone is cleared up.Above-mentioned hypoxia response pond and the bottom of aerobic reaction tank are equipped with aerator, provide needed for it
Dissolved oxygen.
Again by the waste water after second of Aerobic Process for Treatment, the second outlet pipe and effluent recycling are separately flowed by water outlet
Pipe, a part of waste water flow into sedimentation basin through the second outlet pipe, and another part waste water is back to water inlet through effluent recycling pipe,
In, the effluent recycling amount in effluent recycling pipe is the 200% of flow of inlet water, water flow and flow of inlet water in the second outlet pipe
It is identical.It will flow into the waste water of sedimentation basin, carry out mud-water separation, supernatant is discharged through third outlet pipe, and sludge is from sedimentation basin bottom
Sludge pipe is flowed into through sludge out pipe, in sludge pipe, a part of sludge is discharged through excess sludge pipe, and another part sludge is returned through sludge
Flow tube is back to water inlet, wherein, the sludge reflux amount in mud return line is the 75% of flow of inlet water, and sludge reflux amount passes through
Sludge reflux valve and sludge reflux adjust valve regulation, control.
After testing, the sludge concentration in the first reaction zone in aerobic reaction tank meets technology requirement, and sludge color is black
Brown, the sludge concentration of A reaction zones and B reaction zones meets technology requirement, sludge color in the second reaction zone of aerobic reaction tank
For yellowish-brown.The biomembrane adhered on the suspending carrier of the first reaction zone of aerobic reaction tank is taken to carry out microscopy, is given birth on biomembrane
With bacterium, fungi, protozoan, metazoa etc., biofacies enriches.The nitrogenous treatment of Organic Wastewater engineering is by continuous more
After the operation in year, ammonia nitrogen and total nitrogen content are discharged, stablizes and meets《Coking chemistry emission of industrial pollutants standard》(GB16171-
2012) requirement of ammonia nitrogen≤10mg/L, total nitrogen≤20mg/L as defined in table 3.
A kind of nitrogenous organic wastewater treating system provided by the invention and its method are complied with the increasingly strict denitrogenation of country and are removed
Carbocyclic ring protects Policy Demand, strengthens A/O techniques pair using the method that suspending carrier is added in the first reaction zone of aerobic reaction tank
The denitrogenation processing effect of nitrogenous organic wastewater.Existing suspending carrier, which is strengthened, to be primarily present in the technology of Biochemical Treatment because outstanding
Float carrier adds and causes the potential risk that system is not normally functioning and the partial suspended carrier that aerobic reaction tank adds can not
Attached microbial problem, therefore limit scale application of the suspending carrier in engineering.And the method for the present invention effectively overcomes now
There is the various shortcoming in technology, it is simple, economical, efficient, there is larger practical value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (10)
1. a kind of nitrogenous organic wastewater treating system, which is characterized in that include sequentially connected pretreatment pool, anoxic by the road
Reaction tank, aerobic reaction tank, sedimentation basin, the aerobic reaction tank are equipped with the first reaction zone, the second reaction successively along water outlet direction
Area, first reaction zone is interior to be equipped with suspending carrier, and catcher is equipped in the second reaction zone.
2. a kind of nitrogenous organic wastewater treating system according to claim 1, which is characterized in that the pretreatment tank includes
Any one of the following conditions are multinomial：
A1) the pretreatment tank is connected through the first water inlet pipe with nitrogenous organic wastewater, and the pretreatment tank is through the first outlet pipe
It is connected with the water inlet in the hypoxia response pond；
A2) pretreating process in the pretreatment tank is selected from oil removal technique, coagulation process, depositing technology, air-float technology, anaerobism
One or more combinations in technique etc..
A kind of 3. nitrogenous organic wastewater treating system according to claim 1, which is characterized in that the hypoxia response Chi Bao
Include any one of the following conditions or multinomial：
B1 blender) is equipped in the hypoxia response pond；Agitating mode：Lasting stirring, mixing speed：700-900r/min is stirred
Mix power：3-6w/m3；
B2) first water hole of hypoxia response pond is connected with first reaction zone；
B3) being launched in the hypoxia response pond has sludge；Sludge concentration in the hypoxia response pond is 3-5g/L；
B4) dissolved oxygen concentration≤0.5mg/L in the hypoxia response pond.
A kind of 4. nitrogenous organic wastewater treating system according to claim 1, which is characterized in that the first reaction zone packet
Include any one of the following conditions or multinomial：
C1) first reaction zone is connected through the second water hole with the second reaction zone；
C2) percent by volume that first reaction zone accounts for aerobic reaction tank is 15-30%；
C3) the first reaction zone dispensing has sludge；
C4) sludge concentration in first reaction zone in suspending carrier is 5-9g/L；
C5) sludge concentration in first reaction zone outside suspending carrier is 3.4-6.2g/L；
C6) dissolved oxygen concentration in first reaction zone is 0.2-1.0mg/L.
5. a kind of nitrogenous organic wastewater treating system according to claim 1, which is characterized in that the suspending carrier includes
Any one of the following conditions are multinomial：
D1) specific surface area of the suspending carrier is 450-600m2/m3；
D2) percent by volume that the suspending carrier accounts for the first reaction zone is 20-30%.
A kind of 6. nitrogenous organic wastewater treating system according to claim 1, which is characterized in that the second reaction zone packet
Include any one of the following conditions or multinomial：
E1) second reaction zone includes at least one reaction zone；
E2) being launched in the second reaction zone has sludge；Sludge concentration in the second reaction zone is 3-5g/L；
E3) dissolved oxygen concentration >=2mg/L in the second reaction zone；
E4) second reaction zone is connected by water outlet through the second outlet pipe with sedimentation basin side；It is set on the water outlet
There is effluent recycling pipe, described effluent recycling pipe one end is connected with water outlet, the effluent recycling pipe other end and water inlet phase
Connection.
7. a kind of nitrogenous organic wastewater treating system according to claim 1, which is characterized in that the catcher is located at institute
The second water hole is stated at the water outlet of the second reaction zone side；The catcher includes silk screen, handle, connector, institute
It states connector one end with the side of silk screen to be connected, the connector other end and the second water hole detachable connection are described
Handle one end is connected with the opposite side of silk screen, and the handle other end is stretched out outside second reaction zone upwards.
8. a kind of nitrogenous organic wastewater treating system according to claim 1, which is characterized in that the hypoxia response pond with
The bottom of aerobic reaction tank is equipped with aerator, and the aerator includes aeration tube, aeration pipe holder, microbubble aeration
Device, the aeration tube are fixed on the hypoxia response pond and the bottom of aerobic reaction tank, the microbubble by aeration pipe holder
Aerator is arranged in the aeration tube.
9. a kind of nitrogenous organic wastewater treating system according to claim 1, which is characterized in that the sedimentation basin is equipped with
Third outlet pipe, sludge out pipe, described third outlet pipe one end are connected with the sedimentation basin side, described sludge out pipe one end and institute
The bottom for stating sedimentation basin is connected, and the sludge out pipe other end is connected with sludge pipe；The sludge pipe includes excess sludge
Pipe, mud return line, described excess sludge pipe one end is connected with the sludge out pipe, described mud return line one end with it is described go out
Mud pipe is connected, and the mud return line other end is connected with water inlet；The mud return line upper edge reflux direction is successively
Equipped with sludge reflux pump, sludge reflux regulating valve.
10. a kind of processing method of nitrogenous organic wastewater, which is characterized in that include the following steps：
1) sludge is launched in hypoxia response pond and aerobic reaction tank respectively, nitrogenous organic wastewater is flowed into advance through the first water inlet pipe
After processing pond is pre-processed, hypoxia response pond is flowed by water inlet through the first outlet pipe and carries out anoxic treatment；
2) by the waste water after anoxic treatment, the first reaction zone of aerobic reaction tank is flowed into through the first water hole, in suspending carrier
Effect is lower to carry out first time Aerobic Process for Treatment, and waste water carries out second through the second water hole inflow second reaction zone by treated
Aerobic Process for Treatment；
3) by the waste water after Aerobic Process for Treatment, the second outlet pipe and effluent recycling pipe are separately flowed by water outlet, a part is useless
Water flows into sedimentation basin through the second outlet pipe, and another part waste water is back to water inlet through effluent recycling pipe；
4) waste water that will flow into sedimentation basin carries out mud-water separation, and supernatant is discharged through third outlet pipe, and sludge is from sedimentation basin bottom
Sludge pipe is flowed into through sludge out pipe, in sludge pipe, a part of sludge is discharged through excess sludge pipe, and another part sludge is returned through sludge
Flow tube is back to water inlet.
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| CN110803779A (en) * | 2019-12-11 | 2020-02-18 | 辽宁博创环保技术有限公司 | Biological carrier enhanced reaction device for high-concentration organic wastewater treatment |
| CN111423033A (en) * | 2020-04-02 | 2020-07-17 | 上海海事大学 | Wastewater treatment system and method |
| CN111807516A (en) * | 2020-08-03 | 2020-10-23 | 岭南水务集团有限公司 | Improved floating biochemical sewage treatment equipment and method thereof |
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| CN101337738A (en) * | 2008-08-29 | 2009-01-07 | 清华大学 | Process for removing bio foam in sewage disposal process by activated sludge process |
| CN101857337A (en) * | 2010-04-12 | 2010-10-13 | 中国市政工程华北设计研究总院 | Treatment method for biological nitrogen removal of reinforced sewage |
| CN103588298A (en) * | 2012-08-13 | 2014-02-19 | 天津市庆烁环保工程有限公司 | Novel modified A/O biological denitrification process |
| CN105254140A (en) * | 2015-11-23 | 2016-01-20 | 中冶赛迪上海工程技术有限公司 | MBBR (moving bed biofilm reactor) and activated sludge process composited two-stage A/O enhanced biological denitrification process for coking wastewater |
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