CN106277317A - Small-sized purification tank and operational approach thereof - Google Patents

Small-sized purification tank and operational approach thereof Download PDF

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Publication number
CN106277317A
CN106277317A CN201610735240.5A CN201610735240A CN106277317A CN 106277317 A CN106277317 A CN 106277317A CN 201610735240 A CN201610735240 A CN 201610735240A CN 106277317 A CN106277317 A CN 106277317A
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China
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contact layer
groove
purification tank
small
bed groove
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杨泽远
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CHONGQING RONGGUAN TECHNOLOGY Co Ltd
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CHONGQING RONGGUAN TECHNOLOGY Co Ltd
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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
    • C02F3/301—Aerobic and anaerobic treatment in the same reactor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

Abstract

The invention discloses a kind of small-sized purification tank, belong to sewage disposal and environmental technology field, be used for solving outdoor minitype purification tank emission greenhouse effect gas too much, and run electric power and account for overall consumption electric power operating cost problem most probably.It includes cell body, and inclusion removal groove is distributed inside described cell body, filter bed groove of being sick of, contact filtration bed groove, processes tank, and described contact filtration bed groove includes contact layer and lower contact layer, described upper contact layer is ripple plate-like contact material, and described lower contact layer is filled with mesh cylinder filtering material.The invention also discloses a kind of small-sized purification tank operational approach.By contact filtration bed groove being improved to the upper contact layer of ripple plate-like contact material and the lower contact layer of mesh cylinder filtering material, and coordinate the operation of intermittent aerating outdoor, improve suppression greenhouse gases, and realize economize on electricity and efficiently process.

Description

Small-sized purification tank and operational approach thereof
Technical field
The invention belongs to sewage disposal and environmental technology field, specifically, be small-sized purification tank and operational approach thereof.
Background technology
Greenhouse gases refer to absorb in air the solar radiation of ground return, and re-emit some gas of radiation Body, such as steam, carbon dioxide, major part cold-producing medium etc..Their effect is to make earth surface become warmer, is similar to greenhouse Retain the effect of air in solar radiation, and heating greenhouse.This greenhouse gases make the earth become warmer impact to be referred to as " temperature Room effect ".Steam (H2O), carbon dioxide (CO2), nitrous oxide (N2O), freon, methane (CH4) etc. are in earth atmosphere Main greenhouse gases.
The 21st Meeting of States Parties " COP21 " of the United Nations's climatic fluctuation framework treaty, the reduction of CO2 becomes most important class Topic, is not only advanced country, and also there is duties of cutting emissions in developing country.As the obligation of abatement greenhouse gas emission, drainage position Reason field is also required to energy-conservation, reduction cost.In this case, the operation electric power such as having purification tank air pump accounts for overall consumption electricity Power operating cost problem most probably.Then running different from the most conventional continuous aeration, the interval as new operation method exposes Fate row is noticeable.
The conventional research run as intermittent aerating, benchmark test has three kinds of evaluation methodologys, a kind of method therein Test for constant indoor temperature Short-term evaluation.Low temperature stress test in 13 DEG C of test chambers and the constant temperature in 20 DEG C of test chambers are the most negative Lotus tests each 8 week of enforcement.
It is to be provided with purification tank in outdoor that this research runs as intermittent aerating, under the conditions of the water temperature of Four seasons change changes Tested, first, to find intermittent aerating outdoor operation optimum condition, improved suppression greenhouse gases N2O (sub-acidifying Nitrogen) ability；Second, to find the joint of the small-sized purification tank intermittent aerating outdoor operation beyond large-scale sewage treatment facility Electricity and the operational approach efficiently processed.
Summary of the invention
The present invention seeks to have aimed to provide a kind of as living drainage treatment technology, not only improve suppression greenhouse effect gas Body, and the small-sized purification tank economizing on electricity and efficiently processing.
For realizing above-mentioned technical purpose, the technical solution used in the present invention is as follows:
Small-sized purification tank, including cell body, is distributed inclusion removal groove inside described cell body, filter bed groove of being sick of, contact Filter bed groove, processes tank, and described contact filtration bed groove includes contact layer and lower contact layer, and described upper contact layer is ripple tabular Contact material, described lower contact layer is filled with mesh cylinder filtering material.
Preferably, the long 2.430m of described cell body, wide 1.250m, high 1.660m.
Present invention also offers small-sized purification tank operational approach, comprise the following steps,
Step one, cell body is installed, cell body is arranged on outdoor, the long 2.430m of this cell body, wide 1.250m, high 1.660m；Institute State and inclusion removal groove inside cell body, is distributed, filter bed groove of being sick of, contact filtration bed groove, process tank, described field trash goes Except the volume of groove is 1.048m3, the volume of described lonely filter bed groove is 1.052m3, and the volume of described contact filtration bed groove is 0.482m3；
Step 2, intermittent aerating condition, controlling water temperature is 13 DEG C-50 DEG C, and quantity of circulating water is 4-6L/min, and air output is 55-63L/min, HRT are 2-3day；
Step 3, the intermittent aerating time, contact filtration bed groove every 60 minutes is 1 cycle, runs aeration in each cycle 45 minutes, stop aeration 15 minutes.
Preferably, in step one, setting at 15 at noon every day is peak time, and former water feed speed is set as 59L min-1, the time period beyond this setting, former water feed speed is set as 13L min-1。
It should be noted that takes into account this Experimental Establishment utilizes the time, stagger with actual time and carry out this research, therefore Setting at 15 at noon every day is peak time, specifically refers to detailed description of the invention.
Preferably, in step one, described inclusion removal groove is used for processing feces in living drainage, field trash, big Solids and oils and fats.
Preferably, in step one, described lonely filter bed groove is used for organic to the aminoacid in living drainage and protein Property nitrogen is converted to ammonium-nitrogen；By filling mesh cylinder filtering material, sewage passes through filter material, by separation and the anaerobic of solid The effect of microorganism, while carrying out BOD anaerobic decomposition, removing, carries out the reduction denitrogenation of nitrogen oxide.
Preferably, in step one, described contact filtration bed groove includes that contact layer and lower contact layer, described upper contact layer are Ripple plate-like contact material, described lower contact layer is filled with mesh cylinder filtering material；The sewage entered from lonely filter bed concentrated flow leads to The upper contact layer crossing top carries out rectification, and the microorganism utilizing ripple plate-like contact material surface to adhere to acts on, and decomposes, removes BOD in sewage；Lower contact layer, while carrying out same reaction, carries out the nitrification of the removing of SS, ammonium-nitrogen.
Preferably, in step one, described process tank is used for storing the water processed.
Preferably, in step 2, intermittent aerating condition, controlling water temperature is 13 DEG C-50 DEG C, and quantity of circulating water 5.6L/min send Air quantity 60L/min, HRT2.4day.
Preferably, in step one, the CH4 that described lonely filter bed trench bottom generates starts and with former water along with circulation again The stirring of the lonely filter bed groove flowed into is discharged.
The present invention compared to existing technology, first, present small-sized purification tank is with the continuous aeration under aerobic mode Mode is standard, but can carry out energy-conservation in the case of guaranteeing suitable water quality by intermittent aerating mode, is specially In 1 60 minutes cycle, within 15 minutes, stop aeration；Second, at the water temperature conditions of common 21 DEG C-25 DEG C and Under the conditions of intermittent aerating, under the conditions of the energy force rate continuous aeration of suppression greenhouse gases N2O (sub-acidifying nitrogen), exceed 22%；The Three, under the conditions of the water temperature conditions of common more than 12 DEG C and intermittent aerating, the removing ability of BOD, T-N and continuous aeration Condition has the best ability；4th, for small-sized purification tank (5 people with), time normal the continuous aeration electricity charge be about 800 yuan/ Year, and the electricity charge of the intermittent aerating that 45 minutes aeration/15 minute aerations stop (ON/15 divided OFF in hereinafter referred to as 45 minutes) are about 400 In unit/year, 1/2 can be saved；5th, the pattern of purification tank by inclusion removal groove, be sick of filter bed groove, contact filtration bed groove, Process tank is constituted, and other pattern is also suitable.
Accompanying drawing explanation
The present invention can be further illustrated by the nonlimiting examples that accompanying drawing is given；
Fig. 1 is that (less than 13 DEG C for commenting with the process every diurnal variation of water TN that continuous aeration runs in intermittent aerating of the present invention operation Outside valency object)；
Fig. 2 be the various nitrogen forms gas that gap of the present invention aeration runs every diurnal variation (less than 13 DEG C be evaluation object it Outward)；
Fig. 3 be continuous aeration of the present invention run various nitrogen forms gas every diurnal variation (less than 13 DEG C be evaluation object it Outward)；
Fig. 4 is that (less than 13 DEG C for commenting with the process every diurnal variation of water BOD that continuous aeration runs in intermittent aerating of the present invention operation Outside valency object)；
Fig. 5 is the various nitrogen forms gas processed in water of continuous aeration of the present invention and intermittent aerating；
Fig. 6 is the N2O occurrence features being discharged in air during room temperature water temperature phase of the present invention (water temperature 25 DEG C in July)；
Fig. 7 is the N2O occurrence features being discharged in air during the present invention low water temperature phase (water temperature 10.5 DEG C in February)；
Fig. 8 is that the CH4 being discharged to air during the room temperature water temperature phase of the present invention releases characteristic；
Fig. 9 is discharged to the CH4 of air and releases characteristic when being the present invention low water temperature phase；
Figure 10 is the present invention small-sized purification tank schematic diagram.
Detailed description of the invention
In order to make those skilled in the art that the present invention be may be better understood, below in conjunction with the accompanying drawings with embodiment to this Bright technical scheme further illustrates.
As shown in Figure 10, small-sized purification tank, including cell body, inclusion removal groove inside cell body, is distributed, filter bed of being sick of Groove, contact filtration bed groove, process tank, contact filtration bed groove includes contact layer and lower contact layer, and upper contact layer is ripple tabular Contact material, lower contact layer is filled with mesh cylinder filtering material.
In preferred embodiment, the long 2.430m of cell body, wide 1.250m, high 1.660m.
The purification tank benchmark test method that this research specifies according to China Environmental Science Research Institute, is adjusted to BOD: 200mg·L-1、T-N:45mg·L-1、T-P:5mg·L-1、SS:160mg·L-1Actual life draining, at 13:00-19:00 (this allows for the cooking of general family, the life of clothes etc. of doing washing to be flowed into the efficient treatment and purification groove of use with 23:00-4:00 Former water inflow pattern of living is focusing specifically on the time period of 7:00-13:00 and 17:00-21:00), and take into account this Experimental Establishment Utilizing time, staggering time carry out these researchs, the water quality of each hour period of one day does not varies widely, it may be said that without shadow Ring.The former water quantity delivered of every day is 1000L, as the inflow form of former water: 13 point: 30L, 14 point: 90L, 15 point: 250L, 16 point: 100L, 17 point: 30L, 18 point: 30L, 19 point: 50L, 23 point: 30L, when 0: 50L, 1 point: 100L, 2 point: 150L, 3 points: 90L.This 15 time former water feed speed be set as that the bathroom after having a bath etc. flows out the 59L min of peak drainings-1, this sets Former water feed speed in time period beyond Ding is 13L min-1。
Below by arranging two purification tanks in outdoor, a purification tank is set as that intermittent aerating runs, and another purifies Groove is set as that continuous aeration runs, and by experiment, compares analysis.The purification tank used is for being sick of filter bed and contacting 5 people's grooveds of the nitrogen removing type efficient treatment and purification groove of filter bed, total capacity is 2.834m3.
Inclusion removal groove is distributed inside cell body, filter bed groove of being sick of, contact filtration bed groove, process tank.
Inclusion removal groove is used for processing feces, field trash, big solids and the oils and fats in living drainage.
Filter bed groove of being sick of is used for the aminoacid in living drainage and protein Organic nitrogen to be converted to ammonium-nitrogen；Pass through Filling mesh cylinder filtering material, sewage passes through filter material, by separation and the effect of anerobe of solid, is carrying out While BOD anaerobic decomposition, removing, carry out the reduction denitrogenation of nitrogen oxide.
Contact filtration bed groove includes contact layer and lower contact layer, and described upper contact layer is ripple plate-like contact material, under connect Contact layer is filled with mesh cylinder filtering material；The sewage entered from lonely filter bed concentrated flow carries out whole by the upper contact layer on top Stream, the microorganism utilizing ripple plate-like contact material surface to adhere to acts on, the BOD decomposing, removing in sewage；Lower contact layer exists While carrying out same reaction, carry out the nitrification of the removing of SS, ammonium-nitrogen.
Process tank to be used for storing the water processed.
This research combines conventional research and theoretical value, sets the service condition of intermittent aerating as 45 minutes ON/15 minute 1 hours period of OFF is tested.Being described as follows of theoretical value: first, from air pump inject oxygen for BOD remove and Nitration reaction.Here removing BOD1g and need oxygen 1g, processing ammonia 1g during nitrification needs oxygen 4.6g.
NH3+2O2→NO3-+H2O+H+···················(1)
Amount of oxygen=1/14 [mol] × 2 × 32 [g mol-1]=4.6 [g] (2) necessary during nitrification
This research to be injected after former water is adjusted to BOD 200mg L-1, TN 45mg L-1.Big because of TN during injection Half is NH4+, and injecting NH4+ is 45mg L-1.Target water quality treatment is carried out by water quality one-level A, and standard from now on is for processing water BOD 10mg L-1, process water TN10mg L-1.Like this, need to remove BOD190mg L-1, NH4+35mg L-1. The former water of 1000L is averagely injected in this research for one day, needs to remove BOD0.19kg day-1, NH4+0.035kg day-1, needs The oxygen wanted is:
0.035 [kg day-1] × 4.6+0.19 [kg day-1]=0.35 [kgO2 day-1] (3)
The amount of oxygen being below actually fed into for purification tank is as follows:
The output of the air pump that this research uses is 60L min-1, within 1 day, average air feeding amount is 86,400L.In air The content of oxygen about 21%,
86,400[L·day-1] × 0.21=18,144 [L day-1]·············(4)
More than for the air capacity being sent in purification tank.
Wherein in water, the molten amount of oxygen deposited is all 3-5%.
18,144 [L day-1] × 0.03=544 [L day-1]··············(5)
Above oxygen is used to remove BOD and nitration reaction.
If this is converted into gram, because the density of oxygen is 1.42g L-1,
544[L·day-1]×1.42[g·L-1]=772 [g day-1]=0.77 [kgO2·day-1]····(6)
Required amount of oxygen is the aequum that the continuous aeration that the air pump in the case of 24 hours runs runs.Below to 45 points ON/15 divides the situation of OFF and 30 points of ON/30 to divide the situation of OFF to examine.
45 points of ON/15 divide the situation of OFF
0.77[kgO2·day-1] × 3/4=0.58 [kgO2·day-1]·············· (7)
30 points of ON/30 divide the situation of OFF
0.77[kgO2·day-1] × 1/2=0.39 [kgO2·day-1]·············· (8)
At this to actual fed when necessary amount of oxygen (6) and intermittent aerating run needed for BOD removing and nitration reaction Amount of oxygen (7) (8) compare if, it can be seen that 45 minutes ON/OFF amount of oxygen of 15 minutes is enough, 30 minutes The ON/30 minute OFF amount of oxygen that the chances are equally.In view of the activity decrease of microorganism in winter, need to supply sufficient oxygen Amount, therefore 45 minutes ON/15 minute OFF is more appropriate.Therefore, the intermittent aerating service condition of this research is set as 45 minutes ON/ 15 minutes OFF.Detailed power-saving measures is still formulated for expecting in the most each field.
Under conditions of the water temperature of Four seasons change changes, carry out intermittent aerating and run the treatment characteristic run with continuous aeration Comparative analysis.Respective serial experiment condition is as shown in table 1.
Intermittent aerating runs as running with continuous aeration, and recycle ratio is 6, i.e. to injecting the every 1 per day 1000L's of former water Words, 6000L circular treatment.If conversion in every 1 minute, for 4.2L min-1.But because aeration following when intermittent aerating runs Ring also stops, and in order to supplement the water yield during aeration stops, being set as 5.6L min-1Test.According to water temperature, from Phase I to Phase III classifies, and tests.Summary such as table 1, shown in table 2:
The highest temperature of table 1 each period and the lowest temperature
The service condition that table 2 intermittent aerating runs and continuous aeration runs
Analysis method is as follows:
This studies one week 1 sub-sampling, about water quality, must flow into former water, to processing water gaging BOD, COD, TOC, SS, complete Nitrogen, full phosphorus, ammoniacal nitrogen, nitrite nitrogen, nitric nitrogen.Additionally as environment in groove, measure water temperature, DO, pH, oxidoreduction electricity Position, turbidity.These all measure according to underground pipe network standard.
Embodiment one,
Small-sized purification tank operational approach, comprises the following steps,
Step one, cell body is installed, cell body is arranged on outdoor, the long 2.430m of this cell body, wide 1.250m, high 1.660m；Institute State and inclusion removal groove inside cell body, is distributed, filter bed groove of being sick of, contact filtration bed groove, process tank, inclusion removal groove Volume be 1.048m3, be sick of filter bed groove volume be 1.052m3, the volume of contact filtration bed groove is 0.482m3；
Step 2, intermittent aerating condition, aeration condition, controlling water temperature is 13 DEG C-50 DEG C, and quantity of circulating water 5.6L/min send Air quantity 60L/min, HRT2.4day；
Step 3, the intermittent aerating time, contact filtration bed groove every 60 minutes is 1 cycle, runs aeration in each cycle 45 minutes, stop aeration 15 minutes.
Preferably, in step one, setting at 15 at noon every day is peak time, and former water feed speed is set as 59L min-1, the time period beyond this setting, former water feed speed is set as 13L min-1。
Preferably, in step one, inclusion removal groove is used for processing feces in living drainage, field trash, big solid Thing and oils and fats.
Preferably, in step one, filter bed groove of being sick of is used for the aminoacid in living drainage and protein Organic nitrogen Be converted to ammonium-nitrogen；By filling mesh cylinder filtering material, sewage passes through filter material, by separation and the micro-life of anaerobic of solid The effect of thing, while carrying out BOD anaerobic decomposition, removing, carries out the reduction denitrogenation of nitrogen oxide.
Preferably, in step one, contact filtration bed groove includes contact layer and lower contact layer, and upper contact layer is that ripple tabular connects Touching material, lower contact layer is filled with mesh cylinder filtering material；The sewage entered from lonely filter bed concentrated flow is by connecing on top Contact layer carries out rectification, and the microorganism utilizing ripple plate-like contact material surface to adhere to acts on, the BOD decomposing, removing in sewage； Lower contact layer, while carrying out same reaction, carries out the nitrification of the removing of SS, ammonium-nitrogen.
Preferably, in step one, process tank and be used for storing the water processed.
Embodiment two,
Small-sized purification tank operational approach, comprises the following steps,
Step one, cell body is installed, cell body is arranged on outdoor, the long 2.430m of this cell body, wide 1.250m, high 1.660m；Institute State and inclusion removal groove inside cell body, is distributed, filter bed groove of being sick of, contact filtration bed groove, process tank, inclusion removal groove Volume be 1.048m3, be sick of filter bed groove volume be 1.052m3, the volume of contact filtration bed groove is 0.482m3；
Step 2, intermittent aerating condition, controlling water temperature is 13 DEG C-50 DEG C, quantity of circulating water 5.6L/min, air output 60L/ Min, HRT2.4day；
Step 3, the intermittent aerating time, contact filtration bed groove every 60 minutes is 1 cycle, runs aeration in each cycle 45 minutes, stop aeration 15 minutes.
Preferably, in step one, setting at 15 at noon every day is peak time, and former water feed speed is set as 59L min-1, the time period beyond this setting, former water feed speed is set as 13L min-1。
Preferably, in step one, inclusion removal groove is used for processing feces in living drainage, field trash, big solid Thing and oils and fats.
Preferably, in step one, filter bed groove of being sick of is used for the aminoacid in living drainage and protein Organic nitrogen Be converted to ammonium-nitrogen；By filling mesh cylinder filtering material, sewage passes through filter material, by separation and the micro-life of anaerobic of solid The effect of thing, while carrying out BOD anaerobic decomposition, removing, carries out the reduction denitrogenation of nitrogen oxide.
Preferably, in step one, contact filtration bed groove includes contact layer and lower contact layer, and upper contact layer is that ripple tabular connects Touching material, lower contact layer is filled with mesh cylinder filtering material；The sewage entered from lonely filter bed concentrated flow is by connecing on top Contact layer carries out rectification, and the microorganism utilizing ripple plate-like contact material surface to adhere to acts on, the BOD decomposing, removing in sewage； Lower contact layer, while carrying out same reaction, carries out the nitrification of the removing of SS, ammonium-nitrogen.
Preferably, in step one, process tank and be used for storing the water processed.
Preferably, in step one, the CH4 that described lonely filter bed trench bottom generates starts and with former water along with circulation again The stirring of the lonely filter bed groove flowed into is discharged.
The difference of embodiment one and embodiment two is, for relative embodiment one, in embodiment two, and filter bed groove of being sick of The stirring of the lonely filter bed groove that the CH4 that bottom generates starts along with circulation again and flows into former water is discharged.Permissible from lower Fig. 9 Finding out, when the low water temperature phase, two series CH4 simultaneously discharges low, and reason is possibly due to the activity decrease of methane backeria.Along with following Ring starts again and the stirring of lonely filter bed groove that flows into former water can improve the activity of methane backeria, and water temperature that the temperature remains within the normal range can To play enough disposal abilities.
Result of the test is as follows:
Nitrogen removes the comparison of characteristic and resolves
Fig. 1 shows that intermittent aerating runs the process water TN run with continuous aeration and becomes every day.It addition, Fig. 2, Fig. 3 show respectively Every diurnal variation of series nitrogen form.
Phase I, when TN, NO3-N, NO2-N, NH4-N (being all the mean concentration processing water) intermittent aerating runs in order It is 10.5,7.87,0.17,2.04 (being all mg L-1).On the other hand, continuous aeration be 11.9 in order when running, 9.12, 0.10,1.12 (being all mg L-1).Phase I, because NH4-N, NO3-N are low value, finds that nitrification, denitrification can fully be carried out.
Phase II, by suitable when TN, NO3-N, NO2-N, NH4-N (being all the mean concentration processing water) intermittent aerating runs Sequence is 29.4,2.59,0.33,22.3 (being all mg L-1).On the other hand, continuous aeration be 23.6 in order when running, 7.71,1.19,11.5 (being all mg L-1).Phase II, two same nitrifications of series are insufficient, and particularly intermittent aerating runs There is such tendency.
Phase III, by suitable when TN, NO3-N, NO2-N, NH4-N (being all the mean concentration processing water) intermittent aerating runs Sequence is 24.1,4.76,0.24,16.0 (being all mg L-1).On the other hand, continuous aeration be 19.2 in order when running, 5.64,0.89,9.2 (being all mg L-1).
BOD removes the comparison of characteristic and resolves
Fig. 4 shows that intermittent aerating runs the process every diurnal variation of water BOD run with continuous aeration
Phase I, BOD (processing the mean concentration of water) gap aeration is 3.47mg L-1 when running.On the other hand, continuously Aeration is 4.47mg L-1 when running.At Phase I, Organic substance removes fully.
Phase II, BOD (processing the mean concentration of water) gap aeration is 11.1mg L-1 when running.On the other hand, even Continuous aeration is 15.6mg L-1 when running.
Phase III, BOD (processing the mean concentration of water) gap aeration is 11.8mg L-1 when running.On the other hand, even Continuous aeration is 13.6mg L-1 when running.
N2The comparison of O occurrence features resolves
Room temperature water temperature phase (July 28～29 days: water temperature 25 DEG C) and low water temperature phase (February 25～26 days: water temperature 10.5 DEG C) intermittent aerating run and continuous aeration run various nitrogen forms gas and water temperature every diurnal variation as shown in Figure 5.
All post height display TN concentration of Fig. 5.During room temperature, nitrification, denitrification are the most fully carried out, and process and deteriorate during low temperature. Particularly intermittent aerating runs, and nitrogen form is almost NH4-N, it was found that without nitrification.From the beginning of biological sewage disposal process N2O、CH4Produce interdependent microbial activity.Then room temperature water temperature phase intermittent aerating operation and continuous aeration run and low water Temperature phase gas occurrence features has carried out the investigation of all day.
It should be noted that from Fig. 5, it will be seen that common 21 DEG C-25 DEG C water temperature condition and Have a rest under aeration condition, under the conditions of the energy force rate continuous aeration of suppression greenhouse gases N2O (sub-acidifying nitrogen), exceed 22%.
The N being discharged in air2O occurrence features such as Fig. 6, shown in Fig. 7.The generation speed of air is calculated on an hourly basis.Root According to Fig. 6, in the room temperature water temperature phase, continuous aeration runs compared with intermittent aerating operation, with the inflow of former water, N2There is speed in O Degree increases, and then has the tendency of decline.According to Fig. 7, in the low water temperature phase, in intermittent aerating runs, N2O occurs speed to decline ?.This is because decline at low water temperature phase nitrification activity self, N2O occurs also to decline.
The comparison of CH4 occurrence features resolves
The CH4 occurrence features such as Fig. 8 being discharged in air, shown in Fig. 9.
Here, as the situation of N2O, calculate speed on an hourly basis.According to Fig. 8, in the room temperature water temperature phase, interval exposes The inflow of former water is reacted more sensitive by fate row, and during inflow, CH4 discharges.At this lonely filter bed trench bottom generate CH4 with Circulation start again and discharge with the stirring of the lonely filter bed groove of former water inflow.From fig. 9, it can be seen that in the low water temperature phase Time, two series CH4 simultaneously discharges low, and reason is because the activity decrease of methane backeria.
The comparison of operating cost resolves
The cost running the intermittent aerating of domestic 5 people's groove purification tank with continuous aeration operation compares.Such as table 3 institute Show.Numerical value converts per year.
The comparison of table 3 operating cost
Intermittent aerating runs and continuous aeration operating electricity usage amount uses ecowatt instrument to calculate.Its knot Fruit be the electricity usage amount of every day that intermittent aerating runs be 0.88KWh, the electricity usage of every day that continuous aeration runs Amount is 1.71KWh.If every 1KWh commercial power is 1.3 yuan, conversion is as follows per year:
0.88 [KWh] × 1.3 [unit/KWh] × 365 [day]=418 [unit/year] (1)
1.71 [KWh] × 1.3 [unit/KWh] × 365 [day]=811 [unit/year] (2)
Therefore, 15 minutes intermittent aeratings of 45 minutes ON/OFF run compared with continuous aeration driving, can cut every year Subtract each 393 yuan of operating costs.
This research is the theme with the research and development of the energy-saving run technology of efficient treatment and purification groove, with BOD, nitrogen, the efficient place of phosphorus Reason and cost cutting are researched and developed as purpose.Oxygen quantity delivered is the key factor of the removing of BOD, nitrogen, aeration bar Part is particularly important.The research example that the intermittent aerating shortening aeration time in the past operates in constant indoor temperature room is more, and room The outer research example under the conditions of water temperature variation is little.Hold 45 minutes ON/OFF's 15 minutes of deriving from theoretical value at this Disposal ability when intermittent aerating runs and cost cutting, using optimal intermittent aerating service condition as purpose, carried out This research.From TN real test result from the point of view of, although intermittent aerating in run 3 weeks disposal ability unstable, but later To recovering, particularly room temperature water temperature phase (water temperature more than the 25 DEG C) intermittent aerating in summer has as running and running with continuous aeration Good disposal ability.On the other hand, in the case of the low water temperature phase (water temperature less than 12 DEG C) in the winter time, particularly intermittent aerating The disposal ability run has the tendency of deterioration.The intermittent aerating in winter runs the emitting rate of N2O and declines, and causes for nitrification deficiency Phenomenon.It addition, about CH4 speed, run with intermittent aerating and restart, be found to have CH4 and release.In conjunction with above phenomenon, For the disposal ability that intermittent aerating runs, enough disposal abilities can be played in the room temperature water temperature phase in summer, but During beginning and winter low water temperature phase disposal ability unstable, therefore it is noted that the service condition in this period.
The small-sized purification tank and the operational approach thereof that there is provided the present invention above are described in detail.Saying of specific embodiment Bright method and the core concept thereof being only intended to help to understand the present invention.It should be pointed out that, the ordinary skill for the art For personnel, under the premise without departing from the principles of the invention, it is also possible to the present invention is carried out some improvement and modification, these improve Also fall in the protection domain of the claims in the present invention with modifying.

Claims (10)

  1. The most small-sized purification tank, including cell body, is distributed inclusion removal groove inside described cell body, filter bed groove of being sick of, and contacts Filter bed groove, processes tank, it is characterised in that: described contact filtration bed groove includes contact layer and lower contact layer, described upper contact Layer is ripple plate-like contact material, and described lower contact layer is filled with mesh cylinder filtering material.
  2. Small-sized purification tank the most according to claim 1, it is characterised in that: the long 2.430m of described cell body, wide 1.250m are high 1.660m。
  3. The most small-sized purification tank operational approach, it is characterised in that: comprise the following steps,
    Step one, cell body is installed, cell body is arranged on outdoor, the long 2.430m of this cell body, wide 1.250m, high 1.660m；Described groove Internal body portion is furnished with inclusion removal groove, filter bed groove of being sick of, and contact filtration bed groove processes tank, described inclusion removal groove Volume be 1.048m3, the volume of described lonely filter bed groove is 1.052m3, and the volume of described contact filtration bed groove is 0.482m3；
    Step 2, intermittent aerating condition, controlling water temperature is 13 DEG C-50 DEG C, and quantity of circulating water is 4-6L/min, and air output is 55- 63L/min, HRT are 2-3day；
    Step 3, the intermittent aerating time, contact filtration bed groove every 60 minutes is 1 cycle, runs aeration 45 points in each cycle Clock, stops aeration 15 minutes.
  4. Small-sized purification tank operational approach the most according to claim 3, it is characterised in that: in step one, set noon every day 15 is peak time, and former water feed speed is set as 59L min-1, the time period beyond this setting, former water feed speed sets For 13L min-1。
  5. Small-sized purification tank operational approach the most according to claim 4, it is characterised in that: in step one, described field trash goes Except groove is used for processing feces, field trash, big solids and the oils and fats in living drainage.
  6. Small-sized purification tank operational approach the most according to claim 5, it is characterised in that: in step one, described lonely filtration Bed groove is used for the aminoacid in living drainage and protein Organic nitrogen to be converted to ammonium-nitrogen；Filter by filling mesh cylinder Material, sewage passes through filter material, by separation and the effect of anerobe of solid, is carrying out BOD anaerobic decomposition, removing Meanwhile, the reduction denitrogenation of nitrogen oxide is carried out.
  7. Small-sized purification tank operational approach the most according to claim 6, it is characterised in that: in step one, described contact filtration Bed groove includes contact layer and lower contact layer, and described upper contact layer is ripple plate-like contact material, and described lower contact layer is filled with net Shape cylinder filtering material；The sewage entered from lonely filter bed concentrated flow carries out rectification by the upper contact layer on top, utilizes ripple tabular The microorganism of contact material surface adhesion acts on, the BOD decomposing, removing in sewage；Lower contact layer carry out same anti- While Ying, carry out the nitrification of the removing of SS, ammonium-nitrogen.
  8. Small-sized purification tank operational approach the most according to claim 7, it is characterised in that: in step one, described process tank It is used for storing the water processed.
  9. Small-sized purification tank operational approach the most according to claim 8, it is characterised in that: in step 2, intermittent aerating condition, Controlling water temperature is 13 DEG C-50 DEG C, quantity of circulating water 5.6L/min, air output 60L/min, HRT2.4day.
  10. Small-sized purification tank operational approach the most according to claim 9, it is characterised in that: in step one, described lonely filtration The stirring of the lonely filter bed groove that the CH4 that bed trench bottom generates starts along with circulation again and flows into former water is discharged.
CN201610735240.5A 2016-08-26 2016-08-26 Small-sized purification tank and operational approach thereof Pending CN106277317A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102040307A (en) * 2009-10-26 2011-05-04 陆振冈 Sewage treatment system
CN103086564A (en) * 2011-11-05 2013-05-08 関西化工株式会社 Unpowered purification tank
CN204198482U (en) * 2014-11-06 2015-03-11 浙江建投环保工程有限公司 A kind of rotary-type Small Sewage Treatment Equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102040307A (en) * 2009-10-26 2011-05-04 陆振冈 Sewage treatment system
CN103086564A (en) * 2011-11-05 2013-05-08 関西化工株式会社 Unpowered purification tank
CN204198482U (en) * 2014-11-06 2015-03-11 浙江建投环保工程有限公司 A kind of rotary-type Small Sewage Treatment Equipment

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Title
张利民: "《江苏省环境科学研究院青年科技论坛文集》", 31 December 2008 *

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Application publication date: 20170104