CN108483801A - A method of based on ammonia nitrogen in ammonia nitrogen absorption and enhanced biological regeneration removing low-temperature wastewater - Google Patents
A method of based on ammonia nitrogen in ammonia nitrogen absorption and enhanced biological regeneration removing low-temperature wastewater Download PDFInfo
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- CN108483801A CN108483801A CN201810257008.4A CN201810257008A CN108483801A CN 108483801 A CN108483801 A CN 108483801A CN 201810257008 A CN201810257008 A CN 201810257008A CN 108483801 A CN108483801 A CN 108483801A
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
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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
- C02F3/02—Aerobic 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge 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
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/10—Temperature conditions for biological treatment
- C02F2301/106—Thermophilic treatment
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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
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Abstract
The invention belongs to the technical fields of wastewater treatment, disclose a kind of method based on ammonia nitrogen in ammonia nitrogen absorption and enhanced biological regeneration removing low-temperature wastewater.Method is：(1) nitrifying sludge culture will be carried out under aeration and biological device medium temperature；(2) low temperature ammonia nitrogen waste water is passed through to the adsorbent equipment of the filler containing ammonia nitrogen absorption, is adsorbed, ammonia nitrogen concentration ＜ 5mg/L, discharge are discharged；It is discharged ammonia nitrogen concentration >=5mg/L, stops water inlet；(3) basicity is added, the waste water for adding basicity enters aeration and biological device, medium temperature biochemical reaction from adsorbent equipment, and subsequent waste water is passed through in adsorbent equipment again, and waste water continuously recycles in stream oriented device；(4) when the nitrite nitrogen of waste water and nitrate nitrogen concentration and >=150mg/L, waste water is discharged, stream oriented device carries out the low temperature ammonia nitrogen waste water processing in next period, and aeration and biological device keeps medium temperature in wastewater treatment whole process.The method of the present invention is simple, and ammonia nitrogen absorption filler regeneration efficiency is high, handles low temperature ammonia nitrogen waste water stably reaching standard.
Description
Technical field
The invention belongs to the technical fields of wastewater treatment, are related to a kind of method removing ammonia nitrogen in low-temperature wastewater, specifically relate to
And a kind of utilization filler is (such as：Zeolite) absorption ammonia nitrogen and its enhanced biological regeneration removing low-temperature wastewater in ammonia nitrogen method.
Background technology
The activity of microorganism especially wastewater treatment nitrifier is suppressed under low temperature, winter since sewage water temperature is relatively low,
Domestic many sewage disposal plant effluent ammonia nitrogens are often difficult to up to standard.Zeolite the absorption of ammonia nitrogen is influenced by temperature it is smaller, can be with
Ensure that water outlet ammonia nitrogen is up to standard using zeolite absorption low temperature nitrogen-containing wastewater.But zeolite be to the adsorption capacity of ammonia nitrogen it is limited,
Therefore the zeolite being saturated to ammonia nitrogen absorption is needed to be regenerated to improve zeolite utilization rate.Zeolite regeneration can will adsorb in zeolite
Ammonia nitrogen desorption enrichment, if the ammonia nitrogen of centralized processing desorption, can reach the purpose for reducing processing water and saving processing cost.
Zeolite regeneration can be regenerated by physics, chemical regeneration and electrochemical regeneration, as high-temperature calcination, solvent extraction method,
Electrolytic regeneration etc., but cost is higher, it is complicated for operation.Zeolite also can be that chemical ion is exchanged by bio-regeneration, bio-regeneration
With the coupling of microbial metabolism, have it is easy to operate, processing cost is low, the strong advantage of operability.Individually absorption ammonia nitrogen filler
(such as：Zeolite) the bio-regeneration period is long, and regeneration efficiency is low, it is difficult to meet the requirement of a large amount of low-temperature wastewaters of continuous processing.
The present invention connects the adsorbent equipment equipped with ammonia nitrogen absorption filler with the aeration and biological device of medium temperature is kept, and is carrying out
When filler regenerates, the waste water in stream oriented device forms cycle, and is heated to aeration and biological device using heating device so that exposes
During gas biological device keeps medium temperature constant temperature, water to recycle during the entire process of wastewater treatment, the water temperature liter of adsorbent equipment
Height, microbial activity restores fast, while having nitrobacteria to be inoculated into adsorbent equipment, and the conversion of ammonia nitrogen is substantially improved, and realizes ammonia
The highly efficient regeneration of N2 adsorption filler, and processing cost is low, achievees the effect that ammonia nitrogen in efficient removal low-temperature wastewater.
Invention content
In order to overcome the problems, such as that nitrogen-containing wastewater is not easy biochemical treatment qualified discharge and absorption ammonia nitrogen filler (such as under low temperature：
Zeolite) the low disadvantage of biology in situ regeneration efficiency, the purpose of the present invention is to provide one kind being based on ammonia nitrogen absorption and enhanced biological
The method of ammonia nitrogen in regeneration removing low-temperature wastewater.The present invention (is equipped with ammonia when ammonia nitrogen absorption filler regenerates, by ammonia nitrogen absorption device
The device of N2 adsorption filler) it connects with the high efficiency nitrification aeration and biological device run under medium temperature condition, it is useless in stream oriented device
Water forms cycle, by this concatenated operational mode (i.e. waste water recycles between ammonia nitrogen absorption device and aeration and biological device),
Adsorbent equipment temperature gets a promotion, and wherein microbial activity restores fast, and the bioconversion of ammonia nitrogen in regenerated liquid (recycling waste water) increases
The concentration difference with ammonia nitrogen in regenerated liquid (recycling waste water) inside N2 adsorption filler is ammoniated, the ammonia adsorbed in ammonia nitrogen absorption filler is accelerated
Nitrogen diffusion and conversion into regenerated liquid (recycling waste water), to accelerate the bio-regeneration of ammonia nitrogen absorption filler.
The purpose of the present invention is achieved through the following technical solutions：
A method of based on ammonia nitrogen in ammonia nitrogen absorption and enhanced biological regeneration removing low-temperature wastewater, include the following steps：
(1) nitrifying sludge, biofilm culture are inoculated with into the aeration and biological device equipped with filler；
(2) low temperature ammonia nitrogen waste water is passed through in the adsorbent equipment equipped with ammonia nitrogen absorption filler, absorption ammonia nitrogen filler is to low temperature
Ammonia nitrogen is adsorbed in ammonia nitrogen waste water, and with the progress of absorption, ammonia nitrogen concentration can gradually increase in water outlet, when ammonia nitrogen is dense in water outlet
When spending ＜ 5mg/L, direct emission；As ammonia nitrogen concentration >=5mg/L in water outlet, stop water inlet, ammonia is housed in adsorbent equipment at this time
Nitrogen waste water；
(3) basicity is added into the adsorbent equipment equipped with ammonia nitrogen waste water of step (2), then will have added the ammonia nitrogen of basicity
Waste water is passed through in the aeration and biological device of step (1), medium temperature biochemical reaction, by biochemical reaction in subsequent aeration and biological device
Waste water is passed through in adsorbent equipment again, and such waste water continuously recycles in adsorbent equipment and aeration and biological device；In the process of cycle
In, adsorbent equipment is although without heating devices heat, due to the medium temperature condition in aeration and biological device, aeration and biological device
When middle waste water is recycled to adsorbent equipment, adsorbent equipment temperature gets a promotion, and ammonia nitrogen is by microbial continuous bioconversion；
(4) pass through circular flow, when the nitrite nitrogen and nitrate nitrogen of waste water in the adsorbent equipment and aeration and biological device of step (3)
Concentration and when >=150mg/L, the waste water in stream oriented device is discharged, the regeneration of ammonia nitrogen absorption filler is completed in adsorbent equipment；
(5) the regenerated adsorbent equipment of ammonia nitrogen absorption filler will be completed in step (4) and the aeration and biological device of waste water is discharged
Carry out the low temperature ammonia nitrogen waste water processing in next period；
The low temperature ammonia nitrogen waste water processing in next period specifically refers to the completion ammonia nitrogen that low temperature ammonia nitrogen waste water is passed through to step (4)
In the regenerated adsorbent equipment of adsorption stuffing, step (2)~(4) are repeated；Such continuous processing low temperature ammonia nitrogen waste water；In next period
Low temperature ammonia nitrogen waste water processing in aeration and biological device be a upper period be discharged waste water aeration and biological device.
In step (1) biofilm culture the specific steps are：
Nitrifying sludge is inoculated with into the aeration and biological device equipped with filler, the ammonia nitrogen concentration of bored exposure, continuum micromeehanics, water inlet is
30~60mg/L adds basicity, and aeration carries out biochemical reaction, when the mineralized nitrogen of more than half in water inlet is nitrite nitrogen and nitrate nitrogen
When, biofilm culture is completed.Basicity, with CaCO3Meter is 7-8 times of ammonia nitrogen concentration；When biochemical reaction, 2~8mg/ of dissolved oxygen concentration
L, temperature are 20~35 DEG C.
The adsorbent equipment equipped with ammonia nitrogen absorption filler needs to carry out bio-film colonization before being passed through low temperature ammonia nitrogen waste water in step (2)
Culture；Bio-film colonization culture the specific steps are：Nitrifying sludge is inoculated with into the adsorbent equipment equipped with ammonia nitrogen absorption filler, it is bored
It exposes, continuum micromeehanics, the ammonia nitrogen concentration of water inlet is 30~60mg/L, adds basicity, aeration carries out biochemical reaction, when half in water inlet
When above mineralized nitrogen is nitrite nitrogen and nitrate nitrogen, biofilm culture is completed.Basicity, with CaCO3Meter is the 7~8 of ammonia nitrogen concentration
Times；When biochemical reaction, 2~8mg/L of dissolved oxygen concentration, temperature is 20~35 DEG C.The nitrifying sludge is the ripe nitrification of domestication
Sludge can make the removal rate of ammonia nitrogen in ammonia nitrogen waste water reach 90% or more.
Ammonia nitrogen concentration is 5~60mg/L, preferably 6~60mg/L in low temperature ammonia nitrogen waste water described in step (2)；Low temperature ammonia
Temperature≤16 DEG C of nitrogen waste water, preferably 5~16 DEG C, more preferably 5~15 DEG C.
The condition of progress medium temperature biochemical reaction is in aeration and biological device in step (3)：Temperature is 20~35 DEG C, dissolving
2~8mg/L of oxygen concentration；
The dosage of basicity meets in step (3)：The mass ratio of basicity and ammonia nitrogen is (8~12)：1.
When waste water is recycled in the adsorbent equipment equipped with ammonia nitrogen absorption filler in step (3), the condition of wastewater treatment is molten
Solve 2~8mg/L of oxygen concentration.
In the method for the present invention, during the entire process of wastewater treatment, aeration and biological device passes through heating devices heat one
It is directly in medium temperature condition, the temperature of medium temperature is 20~35 DEG C；The wastewater treatment include ammonia nitrogen absorption in waste water, biochemical reaction with
And the regeneration of ammonia nitrogen absorption filler；Also include from the wastewater treatment of a cycle to the wastewater treatment of next cycle.
Number >=1 of adsorbent equipment, number are integer described in step (2)；When there is multiple adsorbent equipments, aeration and biological
Completed together with device and an adsorbent equipment ammonia nitrogen absorption filler regeneration after, aeration and biological device again with another adsorbent equipment one
Act the regeneration for carrying out ammonia nitrogen absorption filler；The regeneration of ammonia nitrogen absorption filler refers to carrying out operation according to step (3) and (4) to realize ammonia
N2 adsorption filler regenerates；Multiple adsorbent equipments alternately ammonia nitrogen filler regenerates；
The multiple adsorbent equipment refers to the adsorbent equipment for being adsorbed and being stopped water inlet according to step (2) respectively.
Nitrifying sludge described in step (1) is the ripe nitrifying sludge of domestication, can make ammonia nitrogen in ammonia nitrogen waste water
Removal rate reaches 90% or more.
Ammonia nitrogen absorption filler filling height is 1~3 in adsorbent equipment equipped with ammonia nitrogen absorption filler described in step (2)
Rice.
After waste water in step (4) in discharge stream oriented device, adsorbent equipment need to be backwashed.
Device used by the method for the present invention, includes adsorbent equipment, aeration and biological device equipped with ammonia nitrogen absorption filler
And waste water collection device, the upper end of the adsorbent equipment is connect with the lower end of aeration and biological device by pipeline, on the pipeline
Equipped with pump；The lower end of the adsorbent equipment is connect with the upper end of aeration and biological device by pipeline, and the pipeline is equipped with cycle
Pump；The bottom of adsorbent equipment and aeration and biological device is equipped with aerator；The adsorbent equipment is equipped with inlet and outlet, goes out
The mouth of a river is connect with waste water collection device；The aeration and biological device is equipped with water outlet, and water outlet is connect with waste water collection device.Institute
The outside for stating aeration and biological device is equipped with heating device, is heated to waste water in aeration and biological device.
The present invention utilize adsorbent equipment in ammonia nitrogen absorption filler (such as：Natural zeolite filler) adsorb ammonia in low temperature ammonia nitrogen waste water
Nitrogen realizes cycle of the waste water in stream oriented device, to strong by the way that the adsorbent equipment of adsorption saturation to be connect with aeration and biological device
Change ammonia nitrogen absorption filler (such as：Zeolite) in ammonia nitrogen desorption and bio-regeneration.The circular flow of stream oriented device can speed up aeration life
The conversion of ammonia nitrogen in object device, and ammonia nitrogen absorption filler can be increased (such as：Zeolite) it is internal and regenerated liquid (recycling waste water) ammonia nitrogen
Concentration difference promotes the ammonia nitrogen adsorbed in zeolite to spread and convert into regenerated liquid.
The aeration and biological device rich in a large amount of nitrifying microorganisms run under normal temperature condition in the present invention, between stream oriented device
When waste water recycles, the temperature of adsorbent equipment on the one hand can be improved, make the quick activity recovery of microorganism therein, exist simultaneously to ammonia
N2 adsorption filler is (such as：Zeolite filtering layer) it is inoculated with the possibility of nitrifier, accelerate ammonia nitrogen absorption filler (such as：Zeolite) biology in situ again
It is raw；On the other hand, the ammonia nitrogen concentration in aeration and biological device waste water can be made quickly to reduce, increase ammonia nitrogen absorption filler surface with again
Ammonia nitrogen concentration is poor in raw liquid (recycling waste water) so that waste water (aeration of the ammonia nitrogen to relatively low ammonia nitrogen concentration inside ammonia nitrogen absorption filler
Waste water in biological device, low concentration are to work as aeration because ammonia nitrogen is converted to nitrite nitrogen and nitrate nitrogen in aeration and biological device
When waste water is recycled to adsorbent equipment in biofilter, ammonia nitrogen concentration is higher than useless from biological aerated filter inside ammonia nitrogen absorption filler
The concentration of water) in transfer and diffusion, then converted by the aeration and biological device of nitrification, it is regenerated to reach quick bio
Target.
It is less efficient if the absorption of ammonia nitrogen and conversion are carried out in the same device.The method of the present invention can be fast
Speed is by mineralized nitrogen at nitrate nitrogen and nitrite nitrogen so that the ammonia nitrogen concentration in biological aerated filter waste water reduces, while can
Increase inside ammonia nitrogen absorption filler and the ammonia nitrogen concentration from biological aerated filter waste water is poor, ammonia nitrogen desorbs in ammonia nitrogen absorption filler
Rate is promoted, and ammonia nitrogen absorption filler regeneration efficiency greatly improves.The regenerated efficiency of the present invention is the same device regeneration efficiency
2-6 times.
Compared with the existing technology, the invention has the advantages that and advantageous effect：
(1) the method for the present invention is suitable for processing low temperature ammonia nitrogen waste water, ensures that water outlet ammonia nitrogen is up to standard, is not influenced by low temperature；
(2) present invention improves in-situ regeneration efficiency after ammonia nitrogen absorption filling adsorption ammonia nitrogen, the present invention (double aeration and biological filters
Pond series connection i.e. absorption and conversion uses two devices, and waste water recycles in stream oriented device) regeneration efficiency within the unit interval is
2-6 times of single zeolite biological aerated filter regeneration efficiency；
(3) method of the invention is simple, efficient, cost of investment is low, and energy-saving, effect stability is reliable.
Description of the drawings
Fig. 1 is a kind of method institute based on ammonia nitrogen in ammonia nitrogen absorption and enhanced biological regeneration removing low-temperature wastewater of the invention
The schematic device of use；Wherein 1- adsorbent equipments, 2- ammonia nitrogen absorption fillers, 3- pumps, 4- valves, 5- waste water collection devices, 6-
Air blower, 7- aeration and biological devices, 8- fillers (haydite), 9- circulating pumps, 10- valves, 11- heating devices (constant temperature)；
Fig. 2 is that schematic device used by the method for ammonia nitrogen in low-temperature wastewater is removed in comparative example 1~3；Wherein 1- inhales
Adsorption device, 2- ammonia nitrogen absorption fillers, 3- pumps, 4- valves, 5- waste water collection devices, 6- air blowers, 7- heating devices (constant temperature)；
Fig. 3 is the device of embodiment 1 and the device of comparative example 1 is handled under Different hypothermia in ammonia nitrogen waste water when ammonia nitrogen, each to fill
Set the effect contrast figure of middle zeolite regeneration；What left ordinate scale indicated is the accounting of the different shape nitrogen in regeneration product, the right
Ordinate indicate be zeolite regeneration rate；It is the accounting of regeneration product in comparative example 1 that a columns are corresponding, and corresponding b columns are real
Apply the accounting of regeneration product in example 1；It is the regeneration rate of comparative example 1 that stain in a columns is corresponding, and the stain above b columns is corresponding
It is the regeneration rate of embodiment 1；
Fig. 4 is the device of embodiment 2 and the device of comparative example 2 is handled under Different hypothermia in ammonia nitrogen waste water when ammonia nitrogen, each to fill
Set the effect contrast figure of middle zeolite regeneration；What left ordinate scale indicated is the quality of regeneration product, the ordinate expression on the right
It is the regeneration rate of zeolite；It is the quality of regeneration product in comparative example 2 that a columns are corresponding, and what b columns indicated is reproduction in embodiment 2
The quality of object；It is the regeneration rate of comparative example 2 that a column intermediate cam shape stains are corresponding, and corresponding b column intermediate cam shape stains are embodiments
2 regeneration rate；
Fig. 5 is the device of embodiment 3 and the device of comparative example 3 is handled under Different hypothermia in ammonia nitrogen waste water when ammonia nitrogen, each to fill
Set the effect contrast figure of middle zeolite regeneration；What left ordinate scale indicated is the quality of regeneration product, the ordinate expression on the right
It is the regeneration rate of zeolite；It is the quality of regeneration product in comparative example 3 that a columns are corresponding, and what b columns indicated is reproduction in embodiment 3
The quality of object；It is the regeneration rate of comparative example 3 that a column intermediate cam shape stains are corresponding, and corresponding b column intermediate cam shape stains are embodiments
3 regeneration rate.
Specific implementation mode
With reference to specific embodiment and attached drawing, the invention will be further described, but embodiments of the present invention
It is without being limited thereto.
Device used by device and Examples 1 to 3 used by the method for the present invention is as shown in Figure 1, including being equipped with
Adsorbent equipment 1, aeration and biological device 7 and the waste water collection device 5 of ammonia nitrogen absorption filler 2, the upper end of the adsorbent equipment 1 with
The lower end of aeration and biological device 7 is connected by pipeline, which is equipped with pump 3, and pipeline is equipped with valve 4；The adsorbent equipment 1
Lower end connect by pipeline with the upper end of aeration and biological device 7, the pipeline be equipped with circulating pump 9, pipeline be equipped with valve
10；The bottom of adsorbent equipment 1 and aeration and biological device 7 is equipped with aerator 6 (including air blower)；The adsorbent equipment 1 is equipped with
Inlet and outlet, water outlet are connect with waste water collection device 5；The aeration and biological device 7 be equipped with water outlet, water outlet with
Waste water collection device 5 connects.The outside of the aeration and biological device is equipped with heating device 11, to waste water in aeration and biological device into
Row heating.Filler 8, preferably haydite are housed in the aeration and biological device.
The present invention use above-mentioned apparatus removing low-temperature wastewater technical process for：(1) by the suction equipped with ammonia nitrogen absorption filler
Adsorption device and aeration and biological device equipped with filler are inoculated with nitrifying sludge, biofilm culture respectively；(2) and then by low temperature ammonia nitrogen waste water
It is passed through in adsorbent equipment and is adsorbed (since the temperature of waste water is relatively low, if adsorbent equipment is carried out from the water inlet of adsorbent equipment
Culture, microorganism is difficult to carry out biochemical reaction in adsorbent equipment, and mainly ammonia nitrogen absorption filler inhales ammonia nitrogen in waste water
It is attached), as ammonia nitrogen concentration ＜ 5mg/L in water outlet, it is directly discharged to waste water collection device；As ammonia nitrogen concentration >=5mg/L in water outlet
When, stop water inlet, (when being adsorbed, aerator can be aerated into waste water equipped with ammonia nitrogen waste water in adsorbent equipment at this time
It can not also be aerated)；(3) basicity is added into the adsorbent equipment equipped with ammonia nitrogen waste water of step (2), then will have added basicity
Ammonia nitrogen waste water from the aeration for entering step (1) in adsorbent equipment above ammonia nitrogen absorption packing layer by pipeline under the action of pump
Biological device (the lower end entrance of aeration and biological device), biochemical reaction (heating devices heat, aerator aeration) under medium temperature, with
Afterwards in aeration and biological device by the waste water of biochemical reaction under the action of circulating pump by pipeline from the top of ceramics filling layer
Into (the lower end entrance of adsorbent equipment) in adsorbent equipment, such waste water continuously recycles in adsorbent equipment and aeration and biological device
(aerator is aerated into adsorbent equipment and aeration and biological device in cyclic process)；(4) pass through circular flow, work as step
(3) concentration of the nitrite nitrogen of waste water and nitrate nitrogen and reach 150mg/L in adsorbent equipment and aeration and biological device, stream oriented device is discharged
In waste water, and adsorbent equipment is backwashed, by the adsorbent equipment of backwash and is discharged the aeration and biological device of waste water
Carry out the low temperature ammonia nitrogen waste water processing in next period；(5) the low temperature ammonia nitrogen waste water processing in next period is specifically referred to low temperature ammonia
Nitrogen waste water is passed through in the adsorbent equipment of the backwash of step (4), repeats step (2)~(4)；Such continuous processing low temperature ammonia nitrogen is useless
Water；Aeration and biological device is the aeration and biological dress that waste water is discharged a upper period in the low temperature ammonia nitrogen waste water processing in next period
It sets.(from biofilm culture, waste water absorption, biochemical reaction, ammonia nitrogen absorption filler regeneration to discharge during the entire process of wastewater treatment
Waste water and the processing for entering next period waste water), aeration and biological device is always maintained at medium temperature using heating devices heat.
Device used by comparative example 1~3 as shown in Fig. 2, include equipped with ammonia nitrogen absorption filler adsorbent equipment 1 (such as：Dress
Have the biological aerated filter of zeolite) and waste water collection device 5, the upper end (2 top of packing layer) of the adsorbent equipment 1 and lower end
(lower section of packing layer 2) is connected by pipeline, and pipeline is equipped with outer circulation and pumps 3 (pumps) and valve 4, in the effect of outer circulating pump 3
Under, in adsorbent equipment 1 liquid of 2 top of liquid with packing layer of the lower section of packing layer 2 by device outside pipeline realize and recycle；It inhales
The bottom of adsorption device 1 is equipped with aerator 6 (including air blower)；The adsorbent equipment 1 is equipped with inlet and outlet, water outlet
It is connect with waste water collection device 5.The outside of the adsorbent equipment 1 is equipped with heating device 7, is added to waste water in adsorbent equipment
Heat.
Waste water treatment process process is in comparative example：(a) nitrification dirt will be inoculated with equipped with the adsorbent equipment of ammonia nitrogen absorption filler
Mud, biofilm culture；(b) and then low temperature ammonia nitrogen waste water is passed through from the water inlet of adsorbent equipment in adsorbent equipment and is adsorbed, when
In water outlet when ammonia nitrogen concentration ＜ 5mg/L, it is directly discharged to waste water collection device；As ammonia nitrogen concentration >=5mg/L in water outlet, stop
Water inlet is equipped with ammonia nitrogen waste water at this time in adsorbent equipment；(c) alkali is added into the adsorbent equipment equipped with ammonia nitrogen waste water of step (b)
Degree, and heating is carried out to the waste water in adsorbent equipment using heating device and rises to medium temperature, then by ammonia nitrogen absorption in adsorbent equipment
Liquid above and below packing layer, which is realized under the action of outer circulating pump by pipeline, to be recycled, and in cycle, aerator exposes
Biochemical reaction occurs in adsorbent equipment for gas, and such waste water is continuously recycled in the upper and lower of the ammonia nitrogen absorption filler of adsorbent equipment；
(d) pass through circular flow, when the concentration of the nitrite nitrogen of adsorbent equipment waste water and nitrate nitrogen is with 150mg/L is reached, in discharger
Waste water to waste water collection device, adsorbent equipment is backwashed；(e) low temperature ammonia nitrogen waste water is passed through to the backwash of step (d)
In adsorbent equipment, step (b)~(d) is repeated；Such continuous processing low temperature ammonia nitrogen waste water.
1 aeration and biological device of embodiment is connected with adsorbent equipment
A method of ammonia nitrogen in ammonia nitrogen and enhanced biological regeneration removing low-temperature wastewater, including following step are adsorbed based on zeolite
Suddenly：
(1) nitrifying sludge (sludge concentration is inoculated with into the aeration and biological device (haydite aeration and biological filter column) equipped with haydite
For 4000-8000mg/L, preferably 8000mg/L), the ammonia nitrogen concentration of bored to expose 3 days, continuum micromeehanics, water inlet is 30mg/L, is added
Basicity is (with CaCO3Meter) 240mg/L, 2~8mg/L of dissolved oxygen concentration, temperature is 20~35 DEG C, when in water inlet 90% or more ammonia
When nitrogen is converted into nitrite nitrogen and nitrate nitrogen, biofilm culture is completed；
It is bored to expose 3 days to being inoculated with nitrifying sludge in the adsorbent equipment (zeolite aeration and biological filter column) equipped with zeolite, continuously into
The ammonia nitrogen concentration of water, water inlet is 30mg/L, adds basicity (with CaCO3Meter) 240mg/L, 2~8mg/L of dissolved oxygen concentration, temperature
It it is 20~35 DEG C, when the mineralized nitrogen of half in water inlet is nitrite nitrogen and nitrate nitrogen, biofilm culture is completed；
(2) low temperature ammonia nitrogen waste water (ammonia nitrogen concentration 30mg/L, temperature are respectively 5 DEG C, 10 DEG C, 12 DEG C, 16 DEG C) is passed through
In adsorbent equipment equipped with zeolite, zeolite is adsorbed (adsorption time 6h) to ammonia nitrogen in low temperature ammonia nitrogen waste water, with absorption
Progress, ammonia nitrogen concentration can gradually increase in water outlet, as ammonia nitrogen concentration ＜ 5mg/L in water outlet, direct emission；When ammonia in water outlet
When nitrogen concentration >=5mg/L, stop water inlet, ammonia nitrogen waste water is housed in adsorbent equipment at this time；
(3) into the adsorbent equipment equipped with zeolite of step (2) according to basicity/ammonia nitrogen=8：1 adds corrresponding quality
NaHCO3, then the ammonia nitrogen waste water for having added basicity is passed through in the aeration and biological device of step (1), biochemical reaction at 20 DEG C,
Enter in adsorbent equipment again by the waste water of biochemical reaction in subsequent aeration and biological device, such waste water is in adsorbent equipment and aeration
It is continuously recycled in biological device；During cycle, dissolved oxygen 2 of the waste water in adsorbent equipment and aeration and biological device~
8mg/L；
(4) pass through circular flow, when the nitrite nitrogen and nitrate nitrogen of waste water in the adsorbent equipment and aeration and biological device of step (3)
Concentration and reach 150mg/L, the waste water in stream oriented device is discharged, and adsorbent equipment is backwashed, by the absorption of backwash
Device and the aeration and biological device that waste water is discharged carry out the low temperature ammonia nitrogen waste water processing in next period, and (zeolite is former in the present embodiment
The position regenerated time is for 24 hours)；
(5) the low temperature ammonia nitrogen waste water processing in next period specifically refers to the recoil that low temperature ammonia nitrogen waste water is passed through to step (4)
In the adsorbent equipment washed, step (2)~(4) are repeated；Such continuous processing low temperature ammonia nitrogen waste water；In the low temperature ammonia nitrogen in next period
Aeration and biological device is the aeration and biological device for a upper period waste water being discharged in wastewater treatment.During the entire process of wastewater treatment
(from biofilm culture, waste water adsorbs, biochemical reaction, and ammonia nitrogen absorption filler regenerates to discharge waste water and enters next period waste water
Processing), aeration and biological device is always maintained at medium temperature using heating devices heat.The pH of low-temperature wastewater is 6~9.
1 single adsorbent equipment of comparative example
The method of ammonia nitrogen, includes the following steps in a kind of removing low-temperature wastewater：
(1) to equipped with zeolite adsorbent equipment (be equipped with zeolite filler aeration filter column, filler account for filter column volume 1/2~
2/3) nitrifying sludge is inoculated in, the ammonia nitrogen concentration of bored to expose 3 days, continuum micromeehanics, water inlet is 30mg/L, adds basicity (with CaCO3
Meter) 240mg/L, 2~8mg/L of dissolved oxygen concentration, temperature be 20~35 DEG C, when half in water inlet mineralized nitrogen be nitrite nitrogen and
When nitrate nitrogen, biofilm culture is completed；
(2) low temperature ammonia nitrogen waste water (ammonia nitrogen concentration 30mg/L, temperature are respectively 5 DEG C, 10 DEG C, 12 DEG C, 16 DEG C) is passed through
In adsorbent equipment equipped with zeolite, zeolite is adsorbed (adsorption time 6h) to ammonia nitrogen in low temperature ammonia nitrogen waste water, with absorption
Progress, ammonia nitrogen concentration can gradually increase in water outlet, as ammonia nitrogen concentration ＜ 5mg/L in water outlet, direct emission；When ammonia in water outlet
When nitrogen concentration >=5mg/L, stop water inlet, ammonia nitrogen waste water is housed in adsorbent equipment at this time；
(3) adsorbent equipment equipped with zeolite of step (2) is heated up, to the absorption dress equipped with zeolite of step (2)
According to basicity/ammonia nitrogen=8 in setting：1 adds the NaHCO of corrresponding quality3, then the liquid above and below zeolite filler layer is led to
It crosses outer circulation pump and pipeline realizes that cycle, such waste water are continuously recycled in the upper and lower of the ammonia nitrogen absorption filler of adsorbent equipment；
During cycle, the temperature of 2~8mg/L of dissolved oxygen, biochemical reaction are 20 DEG C；
(4) pass through circular flow, when the concentration of the nitrite nitrogen of waste water and nitrate nitrogen in the adsorbent equipment of step (3) and reach
When 150mg/L (the zeolite in-situ regenerated time is for 24 hours in the present embodiment), the waste water in discharger and backwash；
(5) low temperature ammonia nitrogen waste water is passed through in the adsorbent equipment of backwash of step (4), repeats step (2)~(4)；Such as
This continuous processing low temperature ammonia nitrogen waste water.
Embodiment 1 and comparative example 1 are in waste water under remove Different hypothermia when ammonia nitrogen, the regenerated design sketch of zeolite in-situ such as figure
Shown in 3.Fig. 3 is the device of embodiment 1 and the device of comparative example 1 is handled under Different hypothermia in ammonia nitrogen waste water when ammonia nitrogen, each device
The effect contrast figure of middle zeolite regeneration.
As can be seen from Figure 3, when temperature is 5,10 DEG C, the double series connection of aeration and biological filter column (1 aeration and biological device of embodiment and boilings
The adsorbent equipment of stone is connected, and when zeolite regeneration, waste water recycles in device) under, the regenerated efficiency of zeolite in-situ is that single zeolite exposes
5-6 times of gas biologic filter (adsorbent equipment of 1 single zeolite of comparative example) regeneration efficiency.It is micro- wherein when temperature is less than 10 DEG C
The activity of biology is suppressed, and the regeneration efficiency of single zeolite aeration and biological filter column is low, and only 4%；And double aeration and biological filter columns
The lower regenerated efficiency of zeolite in-situ of series connection is about 23%.When temperature is 12,16 DEG C, microbial activity is pressed down by lower degree
It makes, the single higher difference 13.96% and 15.71% of zeolite aeration and biological filter column regeneration efficiency, at this time double aeration and biological filter column strings
The lower regenerated efficiency of zeolite in-situ of connection is respectively 24.97% and 28.49%.
2 aeration and biological device of embodiment is connected with adsorbent equipment
A method of ammonia nitrogen in ammonia nitrogen and enhanced biological regeneration removing low-temperature wastewater, including following step are adsorbed based on zeolite
Suddenly：
(1) to the aeration and biological device equipped with haydite, (haydite aeration and biological filter column, filler account for the 1/2~2/ of filter column volume
3) inoculation nitrifying sludge (sludge concentration 4000-8000mg/L, preferably 8000mg/L) in, bored to expose 3 days, continuum micromeehanics, into
The ammonia nitrogen concentration of water is 30mg/L, adds basicity (with CaCO3Meter) 240mg/L, 2~8mg/L of dissolved oxygen concentration, temperature be 20~
35 DEG C, when in water inlet 90% or more mineralized nitrogen is nitrite nitrogen and nitrate nitrogen, biofilm culture is completed；
It is bored to expose 3 days to being inoculated with nitrifying sludge in the adsorbent equipment (zeolite aeration and biological filter column) equipped with zeolite, continuously into
The ammonia nitrogen concentration of water, water inlet is 30mg/L, adds basicity (with CaCO3Meter) 240mg/L, 2~8mg/L of dissolved oxygen concentration, temperature
It it is 20~35 DEG C, when the mineralized nitrogen of half in water inlet is nitrite nitrogen and nitrate nitrogen, biofilm culture is completed；
(2) low temperature ammonia nitrogen waste water (ammonia nitrogen concentration 30mg/L, temperature are respectively 8 DEG C, 10 DEG C) is passed through equipped with zeolite
In adsorbent equipment, zeolite is adsorbed (adsorption time 4h) to ammonia nitrogen in low temperature ammonia nitrogen waste water, with the progress of absorption, water outlet
Middle ammonia nitrogen concentration can gradually increase, as ammonia nitrogen concentration ＜ 5mg/L in water outlet, direct emission；When ammonia nitrogen concentration in water outlet >=
When 5mg/L, stop water inlet, ammonia nitrogen waste water is housed in adsorbent equipment at this time；
(3) into the adsorbent equipment equipped with zeolite of step (2) according to basicity/ammonia nitrogen=8：1 adds corrresponding quality
NaHCO3, then the ammonia nitrogen waste water for having added basicity is passed through in the aeration and biological device of step (1), biochemical reaction at 28 DEG C,
Enter in adsorbent equipment again by the waste water of biochemical reaction in subsequent aeration and biological device, such waste water is in adsorbent equipment and aeration
It is continuously recycled in biological device；During cycle, dissolved oxygen concentration of the waste water in adsorbent equipment and aeration and biological device
For 2~8mg/L；
(4) pass through circular flow, when the nitrite nitrogen and nitrate nitrogen of waste water in the adsorbent equipment and aeration and biological device of step (3)
Concentration and reach 150mg/L, the waste water in stream oriented device is discharged, and adsorbent equipment is backwashed, by the absorption of backwash
The low temperature ammonia nitrogen waste water that device and the aeration and biological device that waste water is discharged carry out next period handles zeolite original in the present embodiment
The position regenerated time is for 24 hours)；
(5) the low temperature ammonia nitrogen waste water processing in next period specifically refers to the recoil that low temperature ammonia nitrogen waste water is passed through to step (4)
In the adsorbent equipment washed, step (2)~(4) are repeated；Such continuous processing low temperature ammonia nitrogen waste water；In the low temperature ammonia nitrogen in next period
Aeration and biological device is the aeration and biological device for a upper period waste water being discharged in wastewater treatment.During the entire process of wastewater treatment
(from biofilm culture, waste water adsorbs, biochemical reaction, and ammonia nitrogen absorption filler regenerates to discharge waste water and enters next period waste water
Processing), aeration and biological device is always maintained at medium temperature using heating devices heat.
2 single adsorbent equipment of comparative example
The method of ammonia nitrogen, includes the following steps in a kind of removing low-temperature wastewater：
(1) to equipped with zeolite adsorbent equipment (be equipped with zeolite filler aeration filter column, filler account for filter column volume 1/2~
2/3) nitrifying sludge is inoculated in, the ammonia nitrogen concentration of bored to expose 3 days, continuum micromeehanics, water inlet is 30mg/L, adds basicity (with CaCO3
Meter) 240mg/L, 2~8mg/L of dissolved oxygen concentration, temperature be 20~35 DEG C, when half in water inlet mineralized nitrogen be nitrite nitrogen and
When nitrate nitrogen, biofilm culture is completed；
(2) low temperature ammonia nitrogen waste water (ammonia nitrogen concentration 30mg/L, temperature are respectively 8 DEG C, 10 DEG C) is passed through equipped with zeolite
In adsorbent equipment, zeolite is adsorbed (adsorption time 4h) to ammonia nitrogen in low temperature ammonia nitrogen waste water, with the progress of absorption, water outlet
Middle ammonia nitrogen concentration can gradually increase, as ammonia nitrogen concentration ＜ 5mg/L in water outlet, direct emission；When ammonia nitrogen concentration in water outlet >=
When 5mg/L, stop water inlet, ammonia nitrogen waste water is housed in adsorbent equipment at this time；2~8mg/L of dissolved oxygen during absorption；
(3) adsorbent equipment equipped with zeolite of step (2) is heated up, to the absorption dress equipped with zeolite of step (2)
According to basicity/ammonia nitrogen=8 in setting：1 adds the NaHCO of corrresponding quality3, then the liquid above and below zeolite filler layer is led to
It crosses outer circulation pump and pipeline realizes that cycle, such waste water are continuously recycled in the upper and lower of the ammonia nitrogen absorption filler of adsorbent equipment；
During cycle, the temperature of 2~8mg/L of dissolved oxygen, biochemical reaction are 28 DEG C；
(4) pass through circular flow, when the concentration of the nitrite nitrogen of waste water and nitrate nitrogen in the adsorbent equipment of step (3) and reach
When 150mg/L (the zeolite in-situ regenerated time is for 24 hours in the present embodiment), the waste water in discharger and backwash；
(5) low temperature ammonia nitrogen waste water is passed through in the adsorbent equipment of backwash of step (4), repeats step (2)~(4)；Such as
This continuous processing low temperature ammonia nitrogen waste water.
In embodiment 2 and comparative example 2 in waste water under removing Different hypothermia when ammonia nitrogen, the regenerated design sketch of zeolite in-situ is such as
Shown in Fig. 4.Fig. 4 is the device of embodiment 2 and the device of comparative example 2 is handled under Different hypothermia in ammonia nitrogen waste water when ammonia nitrogen, each to fill
Set the effect contrast figure of middle zeolite regeneration.
As can be seen from Figure 4, when temperature is 10 DEG C, the double series connection of aeration and biological filter columns (2 aeration and biological device of embodiment and zeolites
Adsorbent equipment series connection, when zeolite regeneration, waste water recycles in device) under the regenerated efficiency of zeolite in-situ be single zeolite aeration life
3 times of object filter column (adsorbent equipment of 2 single zeolite of comparative example) regeneration efficiency；When temperature is 8 DEG C, double aeration and biological filter column strings
The lower regenerated efficiency of zeolite in-situ of connection is 2 times of single zeolite aeration and biological filter column regeneration efficiency, illustrates double aeration filter column series windings
Operation can promote zeolite in-situ to regenerate.
3 aeration and biological device of embodiment is connected with adsorbent equipment
A method of ammonia nitrogen in ammonia nitrogen and enhanced biological regeneration removing low-temperature wastewater, including following step are adsorbed based on zeolite
Suddenly：
(1) to the aeration and biological device equipped with haydite, (haydite aeration and biological filter column, filler account for the 1/2~2/ of filter column volume
3) inoculation nitrifying sludge (sludge concentration 4000-8000mg/L, preferably 8000mg/L) in, bored to expose 3 days, continuum micromeehanics, into
The ammonia nitrogen concentration of water is 30mg/L, adds basicity (with CaCO3Meter) 240mg/L, 2~8mg/L of dissolved oxygen concentration, temperature be 20~
35 DEG C, when in water inlet 90% or more mineralized nitrogen is nitrite nitrogen and nitrate nitrogen, biofilm culture is completed；
It is bored to expose 3 days to being inoculated with nitrifying sludge in the adsorbent equipment (zeolite aeration and biological filter column) equipped with zeolite, continuously into
The ammonia nitrogen concentration of water, water inlet is 30mg/L, adds basicity (with CaCO3Meter) 240mg/L, 2~8mg/L of dissolved oxygen concentration, temperature
It it is 20~35 DEG C, when the mineralized nitrogen of half in water inlet is nitrite nitrogen and nitrate nitrogen, biofilm culture is completed；
(2) low temperature ammonia nitrogen waste water (ammonia nitrogen concentration 30mg/L, temperature are respectively 8 DEG C, 10 DEG C) is passed through equipped with zeolite
In adsorbent equipment, zeolite is adsorbed (adsorption time 2h) to ammonia nitrogen in low temperature ammonia nitrogen waste water, with the progress of absorption, water outlet
Middle ammonia nitrogen concentration can gradually increase, as ammonia nitrogen concentration ＜ 5mg/L in water outlet, direct emission；When ammonia nitrogen concentration in water outlet >=
When 5mg/L, stop water inlet, ammonia nitrogen waste water is housed in adsorbent equipment at this time；
(3) into the adsorbent equipment equipped with zeolite of step (2) according to basicity/ammonia nitrogen=8：1 adds corrresponding quality
NaHCO3, then the ammonia nitrogen waste water for having added basicity is passed through in the aeration and biological device of step (1), biochemical reaction at 35 DEG C,
Enter in adsorbent equipment again by the waste water of biochemical reaction in subsequent aeration and biological device, such waste water is in adsorbent equipment and aeration
It is continuously recycled in biological device；During cycle, dissolved oxygen 2 of the waste water in adsorbent equipment and aeration and biological device~
8mg/L；
(4) pass through circular flow, when the nitrite nitrogen and nitrate nitrogen of waste water in the adsorbent equipment and aeration and biological device of step (3)
Concentration and reach 150mg/L, the waste water in stream oriented device is discharged, and adsorbent equipment is backwashed, by the absorption of backwash
The low temperature ammonia nitrogen waste water that device and the aeration and biological device that waste water is discharged carry out next period handles zeolite original in the present embodiment
The position regenerated time is for 24 hours)；
(5) the low temperature ammonia nitrogen waste water processing in next period specifically refers to the recoil that low temperature ammonia nitrogen waste water is passed through to step (4)
In the adsorbent equipment washed, step (2)~(4) are repeated；Such continuous processing low temperature ammonia nitrogen waste water；In the low temperature ammonia nitrogen in next period
Aeration and biological device is the aeration and biological device for a upper period waste water being discharged in wastewater treatment.During the entire process of wastewater treatment
(from biofilm culture, waste water adsorbs, biochemical reaction, and ammonia nitrogen absorption filler regenerates to discharge waste water and enters next period waste water
Processing), aeration and biological device is always maintained at medium temperature using heating devices heat.
3 single adsorbent equipment of comparative example
The method of ammonia nitrogen, includes the following steps in a kind of removing low-temperature wastewater：
(1) to equipped with zeolite adsorbent equipment (be equipped with zeolite filler aeration filter column, filler account for filter column volume 1/2~
2/3) nitrifying sludge is inoculated in, the ammonia nitrogen concentration of bored to expose 3 days, continuum micromeehanics, water inlet is 30mg/L, adds basicity (with CaCO3
Meter) 240mg/L, 2~8mg/L of dissolved oxygen concentration, temperature be 20~35 DEG C, when half in water inlet mineralized nitrogen be nitrite nitrogen and
When nitrate nitrogen, biofilm culture is completed；
(2) low temperature ammonia nitrogen waste water (ammonia nitrogen concentration 30mg/L, temperature are respectively 8 DEG C, 10 DEG C) is passed through equipped with zeolite
In adsorbent equipment, zeolite is adsorbed (adsorption time 2h) to ammonia nitrogen in low temperature ammonia nitrogen waste water, with the progress of absorption, water outlet
Middle ammonia nitrogen concentration can gradually increase, as ammonia nitrogen concentration ＜ 5mg/L in water outlet, direct emission；When ammonia nitrogen concentration in water outlet >=
When 5mg/L, stop water inlet, ammonia nitrogen waste water is housed in adsorbent equipment at this time；
(3) adsorbent equipment equipped with zeolite of step (2) is heated up, to the absorption dress equipped with zeolite of step (2)
According to basicity/ammonia nitrogen=8 in setting：1 adds the NaHCO of corrresponding quality3, then the liquid above and below zeolite filler layer is led to
It crosses outer circulation pump and pipeline realizes that cycle, such waste water are continuously recycled in the upper and lower of the ammonia nitrogen absorption filler of adsorbent equipment；
During cycle, the temperature of 2~8mg/L of dissolved oxygen, biochemical reaction are 35 DEG C；
(4) pass through circular flow, when the concentration of the nitrite nitrogen of waste water and nitrate nitrogen in the adsorbent equipment of step (3) and reach
When 150mg/L (the zeolite in-situ regenerated time is for 24 hours in the present embodiment), the waste water in discharger and backwash；
(5) low temperature ammonia nitrogen waste water is passed through in the adsorbent equipment of backwash of step (4), repeats step (2)~(4)；Such as
This continuous processing low temperature ammonia nitrogen waste water.
In embodiment 3 and comparative example 3 in waste water under removing Different hypothermia when ammonia nitrogen, the regenerated design sketch of zeolite in-situ is such as
Shown in Fig. 5.Fig. 5 is the device of embodiment 3 and the device of comparative example 3 is handled under Different hypothermia in ammonia nitrogen waste water when ammonia nitrogen, each to fill
Set the effect contrast figure of middle zeolite regeneration.
As can be seen from Figure 5, when temperature is 8,10 DEG C, the double series connection of aeration and biological filter column (3 aeration and biological device of embodiment and boilings
The adsorbent equipment of stone is connected, and when zeolite regeneration, waste water recycles in device) under the regenerated efficiency of zeolite in-situ be single zeolite aeration
2 times of biologic filter (adsorbent equipment of 3 single zeolite of comparative example) regeneration efficiency.Adsorption time is shorter, and regeneration efficiency is higher.When
When adsorption time is 2h, the regeneration rate of zeolite can reach 50%.
Therefore can be seen that the present invention from above example can promote the in-situ regeneration of ammonia nitrogen absorption saturated zeolite, be suitable for
Low-temperature and low-concentration nitrogen-containing wastewater is handled, is had to solving the problems, such as that north of China winter sewage treatment plant ammonia nitrogen is unable to qualified discharge
Certain engineering significance.
Claims (10)
1. a kind of method based on ammonia nitrogen in ammonia nitrogen absorption and enhanced biological regeneration removing low-temperature wastewater, it is characterised in that：Including
Following steps：
(1) nitrifying sludge, biofilm culture are inoculated with into the aeration and biological device equipped with filler；
(2) low temperature ammonia nitrogen waste water is passed through in the adsorbent equipment equipped with ammonia nitrogen absorption filler, absorption ammonia nitrogen filler is to low temperature ammonia nitrogen
Ammonia nitrogen is adsorbed in waste water, and with the progress of absorption, ammonia nitrogen concentration can gradually increase in water outlet, as ammonia nitrogen concentration ＜ in water outlet
When 5mg/L, direct emission；As ammonia nitrogen concentration >=5mg/L in water outlet, stop water inlet, it is useless equipped with ammonia nitrogen in adsorbent equipment at this time
Water；
(3) basicity is added into the adsorbent equipment equipped with ammonia nitrogen waste water of step (2), then will have added the ammonia nitrogen waste water of basicity
It is passed through in the aeration and biological device of step (1), carries out medium temperature aeration biochemical reaction, pass through in subsequent aeration and biological device biochemical anti-
The waste water answered is passed through in adsorbent equipment again, and such waste water continuously recycles in adsorbent equipment and aeration and biological device；
(4) pass through circular flow, it is dense when the nitrite nitrogen of waste water in the adsorbent equipment and aeration and biological device of step (3) and nitrate nitrogen
Degree and when >=150mg/L, is discharged the waste water in stream oriented device, the regeneration of ammonia nitrogen absorption filler is completed in adsorbent equipment；
(5) the regenerated adsorbent equipment of ammonia nitrogen absorption filler will be completed in step (4) and the aeration and biological device progress of waste water is discharged
The low temperature ammonia nitrogen absorption wastewater treatment in next period；
The low temperature ammonia nitrogen waste water processing in next period specifically refers to the completion ammonia nitrogen absorption that low temperature ammonia nitrogen waste water is passed through to step (4)
In the regenerated adsorbent equipment of filler, step (2)~(4) are repeated；Such continuous processing low temperature ammonia nitrogen waste water；It is low in next period
Aeration and biological device is the aeration and biological device for a upper period waste water being discharged in warm ammonia nitrogen waste water processing.
2. the method according to claim 1 based on ammonia nitrogen in ammonia nitrogen absorption and enhanced biological regeneration removing low-temperature wastewater,
It is characterized in that：In step (1) biofilm culture the specific steps are：
It is inoculated with nitrifying sludge into the aeration and biological device equipped with filler, bored exposure, continuum micromeehanics, the ammonia nitrogen concentration of water inlet is 30~
60mg/L adds basicity, and aeration carries out biochemical reaction, when the mineralized nitrogen of more than half in water inlet is nitrite nitrogen and nitrate nitrogen,
Biofilm culture is completed.
3. the method according to claim 2 based on ammonia nitrogen in ammonia nitrogen absorption and enhanced biological regeneration removing low-temperature wastewater,
It is characterized in that：Basicity, with CaCO3Meter is 7-8 times of ammonia nitrogen concentration；When biochemical reaction, 2~8mg/L of dissolved oxygen concentration, temperature
It is 20~35 DEG C.
4. the method according to claim 1 based on ammonia nitrogen in ammonia nitrogen absorption and enhanced biological regeneration removing low-temperature wastewater,
It is characterized in that：During the entire process of wastewater treatment, aeration and biological device is constantly in medium temperature condition, medium temperature by heating device
Temperature be 20~35 DEG C；The wastewater treatment include ammonia nitrogen absorption in waste water, biochemical reaction and ammonia nitrogen absorption filler again
It is raw.
5. the method according to claim 1 based on ammonia nitrogen in ammonia nitrogen absorption and enhanced biological regeneration removing low-temperature wastewater,
It is characterized in that：Number >=1 of adsorbent equipment, number are integer described in step (2)；When there is multiple adsorbent equipments, aeration life
Completed together with object device and an adsorbent equipment ammonia nitrogen absorption filler regeneration after, aeration and biological device again with another adsorbent equipment
The regeneration of ammonia nitrogen absorption filler is carried out together；The regeneration of ammonia nitrogen absorption filler refers to carrying out operation realization according to step (3) and (4)
Ammonia nitrogen absorption filler regenerates；When adsorbent equipment is multiple, multiple adsorbent equipments alternately ammonia nitrogen absorption filler regenerates；
The multiple adsorbent equipment refers to the adsorbent equipment for being adsorbed and being stopped water inlet according to step (2) respectively.
6. the method according to claim 1 based on ammonia nitrogen in ammonia nitrogen absorption and enhanced biological regeneration removing low-temperature wastewater,
It is characterized in that：The adsorbent equipment equipped with ammonia nitrogen absorption filler needs to carry out biological extension before being passed through low temperature ammonia nitrogen waste water in step (2)
Membrance cuiture；When carrying out bio-film colonization culture, bio-film colonization culture the specific steps are：To the absorption equipped with ammonia nitrogen absorption filler
Nitrifying sludge is inoculated in device, the ammonia nitrogen concentration of bored exposure, continuum micromeehanics, water inlet is 30~60mg/L, adds basicity, and aeration carries out
Biochemical reaction, when the mineralized nitrogen of more than half in water inlet is nitrite nitrogen and nitrate nitrogen, biofilm culture is completed.
7. the method according to claim 6 based on ammonia nitrogen in ammonia nitrogen absorption and enhanced biological regeneration removing low-temperature wastewater,
It is characterized in that：Basicity, with CaCO3Meter is 7-8 times of ammonia nitrogen concentration；When biochemical reaction, 2~8mg/L of dissolved oxygen concentration, temperature
It is 20~35 DEG C.
8. the method according to claim 1 based on ammonia nitrogen in ammonia nitrogen absorption and enhanced biological regeneration removing low-temperature wastewater,
It is characterized in that：Ammonia nitrogen concentration is 5~60mg/L in low temperature ammonia nitrogen waste water described in step (2)；The temperature of low temperature ammonia nitrogen waste water≤
16℃；
The condition of progress medium temperature biochemical reaction is in aeration and biological device in step (3)：Temperature is 20~35 DEG C, and dissolved oxygen is dense
Spend 2~8mg/L；
The dosage of basicity meets in step (3)：The mass ratio of basicity and ammonia nitrogen is (8~12)：1.
9. the method according to claim 8 based on ammonia nitrogen in ammonia nitrogen absorption and enhanced biological regeneration removing low-temperature wastewater,
It is characterized in that：5~16 DEG C of the temperature of low temperature ammonia nitrogen waste water described in step (2).
10. the method according to claim 1 based on ammonia nitrogen in ammonia nitrogen absorption and enhanced biological regeneration removing low-temperature wastewater,
It is characterized in that：When waste water is recycled in the adsorbent equipment equipped with ammonia nitrogen absorption filler in step (3), the condition of wastewater treatment is molten
Solve 2~8mg/L of oxygen concentration.
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