CN109542150A - A kind of adjusting method of rural domestic sewage treatment facility influent load - Google Patents
A kind of adjusting method of rural domestic sewage treatment facility influent load Download PDFInfo
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Abstract
The invention discloses a kind of adjusting method of rural domestic sewage treatment facility influent load, adjusting method includes: selected rural domestic sewage treatment facility, is sampled to the sewage in water inlet conditioning tank, the concentration and conductivity of pollutant in test sample；The linear relationship between conductivity and pollutant concentration is obtained according to detection data；Conductivity meter and liquidometer are installed in the water inlet conditioning tank of each rural domestic sewage treatment facility, conductivity value and height of water level, concentration and total amount into pollutant in water conditioning tank is calculated, further according to the pollutant volumetric loading or pollutant surface loading of sewage-treatment plant, the duration that elevator pump is opened is determined, to adjust the influent load of rural domestic sewage treatment facility.This method realizes the efficient adjusting of rural domestic sewage treatment facility influent load in the case where reducing monitoring cost to monitor and manage the influent quality of control rural domestic sewage treatment facility by the conductivity of measurement treatment facility water inlet.
Description
Technical field
The present invention relates to the adjustings of technical field of waste water processing more particularly to rural domestic sewage treatment facility influent load
Method.
Background technique
In recent years, the quantity of China's rural domestic sewage treatment facility sharply increases.By taking Zhejiang as an example, domestic sewage in rural areas
Treatment facility has substantially carried out all standing at village, family, and the facility of a counties and districts can reach hundreds and thousands of seats, and geographical location
High degree of dispersion.The quantity of these facilities is big, area is wide, relies primarily on artificial operation management at present；And National Standard Method is utilized to monitor water
Matter index, samples in process of supervision with the higher cost of water-quality test, the period is longer and larger workload, is not only difficult in real time
The change of water quality of ground instruction water inlet, and be difficult to cope with domestic sewage in rural areas change of water quality in time during facility operation
Greatly, treatment facility pollutional load fluctuates big problem, affects the performance of facility effect.
Currently, rural domestic sewage treatment facility is broadly divided into biological treatment (such as anaerobic- anoxic- oxic (A2O)
Group technology, anaerobic-aerobic (AO) group technology, sequencing batch reactor and anaerobism, aerobic independent processing) and Ecological Disposal
(most commonly artificial swamp).The composition of various rural sewage treatment facilities is generally all fairly simple, and biological treatment facility relates to
And to equipment be mainly inlet water lifting pumps, reflux pump, blower, and the equipment that Ecological Disposal facility is related to generally only is intake
Elevator pump.The automatic control of facility operation is mainly reflected at present controls the start and stop of elevator pump by power control cabinet to regulate and control inflow, leads to
Start and stop and the frequency of control blower are crossed to regulate and control aeration quantity.In addition, the water quality and quantity due to country sewage changes greatly, generally locating
Conditioning tank can be equipped with by managing facility front end, and conditioning tank one end is equipped with water inlet, and the other end is equipped with elevator pump, and sewage is mentioned by elevator pump
It rises and enters in anaerobic pond or artificial swamp, promote water pump outlet pipe and be equipped with return pipe, to by sewage backflow to conditioning tank, with
Just control enters the flow of sewage in anaerobic pond or artificial swamp.
Some regional O&M effects in order to improve facility, exploitation establish the remote supervisory platform of facility O&M, pass through
Remote supervisory platform monitor in real time water pump and blower operating status, some platforms can also be seen that instantaneously with integrated flow, with
And O&M track and the O&M record of operation maintenance personnel.
Such as: the application for a patent for invention of Publication No. CN105717859A discloses a kind of whole-process management distributing rural area
The remote supervisory method of sewage treatment facility, this method comprises: the data of sewage treatment facility acquisition pass through wireless communication networks
Real-time transmission to monitoring management server, monitoring management server stores and processs the data information of acquisition, and will divide
Analysis result is transmitted to remote operation apparatus, and user adjusts the operation of sewage treatment facility by the platform of remote operation apparatus in real time
Parameter adjusts data by wireless communication networks and is transmitted back to sewage treatment facility, to field device running status monitor sum number
It is adjusted according to Acquisition Instrument, realizes the distributed management to sewage treatment facility.Wherein, data collected include real time monitoring
The operating status of picture, water pump or blower, wastewater influent and water flow, COD concentration, BOD concentration, pH value and ammonia nitrogen are dense
Degree.
But since fund limits, rural sewage treatment facility can not be as municipal wastewater treatment plant, using largely existing
Line monitoring technology carries out the monitoring and management of system to the water quality and biochemical reaction parameter of Inlet and outlet water；Therefore to the water quality of Inlet and outlet water
Supervision with pollutional load is the problem of rural sewage treatment facility O&M.
On the other hand, the continuous improvement due to all parts of the country to country sewage emission request, rural decentralized wastewater processing are set
Can apply be operated normally, not only be taken using biology or/and Ecological Disposal technique, above-mentioned biological and ecological treatment process more and more
Certainly whether operated in water pump and blower, be more dependent upon in reactor whether maintain reasonable hydraulic loading and pollutant volume/
Surface loading.Studies have shown that domestic sewage in rural areas universal carbon-nitrogen ratio in China's is low.By taking Zhejiang as an example, COD/TN is substantially below 3, absolutely
It is most of to be lower than 2.0.In all kinds of country sewage biological treatments, COD compliance rate highest is 90% or more；Ammonia nitrogen, total nitrogen,
Total phosphorus is the limiting factor of qualified discharge, and is influenced very greatly by water inlet.
Currently, the main reason for causing the processing water outlet of rural sewage treatment facility not up to standard, be exactly that influent concentration is too high, or
Person's influent load is too big；If can be monitored online, and influent load is adjusted, will significantly be promoted using AAO, artificial swamp as generation
The biology or/and Ecological Disposal efficiency of table.Therefore, the durable water quality of the low price that remote supervisory uses suitable country sewage is online
Monitoring device produces urgent need.
However, the price of the online monitoring instruments such as ammonia nitrogen, total nitrogen, total phosphorus is higher, differed from tens of thousands of to ten tens of thousands of yuan, it is clear that
It can not adapt to the particularity of rural domestic sewage treatment facility monitoring.Therefore, it is necessary to go to probe into new monitoring method to substitute
The online monitoring instruments such as conventional ammonia nitrogen, total nitrogen, total phosphorus, to effectively realize the efficient monitoring of domestic sewage in rural areas.
Summary of the invention
The present invention provides a kind of adjusting method of rural domestic sewage treatment facility influent load, this method passes through measurement
The conductivity for the treatment of facility water inlet is supervised to monitor and manage the influent quality of control rural domestic sewage treatment facility reducing
In the case where surveying cost, the efficient adjusting of rural domestic sewage treatment facility influent load is realized.
Specific technical solution is as follows:
A kind of monitoring and managing method of rural domestic sewage treatment facility, comprising the following steps:
(1) it selectes and several is set by water inlet conditioning tank and sewage-treatment plant rural domestic sewage treatment dimerous
It applies, is equipped in water inlet conditioning tank by the elevator pump of sewage input sewage-treatment plant in pond；Each rural domestic sewage treatment is set
Sewage in Shi Jinshui conditioning tank is sampled, the concentration and conductivity of pollutant in test sample；The domestic sewage in rural areas
By kitchen waste water, washing sewage and through septic tank, treated that excrement and urine waste forms；The pollutant is total nitrogen, ammonia nitrogen or total
Phosphorus；
(2) according to the detection data of sample in step (1), linear regression analysis and equation model is carried out, conductivity is obtained
Linear relationship between pollutant concentration；
Wherein, equation of linear regression are as follows: y=ax+b；X is conductivity, and y is the concentration of pollutant, and a is slope, and b is to cut
Away from；
(3) conductivity meter and liquidometer are installed in the water inlet conditioning tank of each rural domestic sewage treatment facility, supervised respectively
The conductivity value and height of water level for surveying sewage in water inlet conditioning tank are calculated into the concentration of pollutant in water conditioning tank and total
Amount determines the duration that elevator pump is opened further according to the pollutant volumetric loading or pollutant surface loading of sewage-treatment plant, from
And adjust the influent load of rural domestic sewage treatment facility.
In the present invention, the domestic sewage in rural areas refers to sewage caused by rural resident's life, specifically includes three classes
Sewage, it may be assumed that excrement and urine waste (treated through septic tank), kitchen waste water and washing sewage.
It is found through experiment that for above-mentioned domestic sewage in rural areas, between conductivity and the concentration of total nitrogen, ammonia nitrogen and total phosphorus
There are linear relationships, the concentration of total nitrogen in domestic sewage in rural areas, ammonia nitrogen and total phosphorus can be reflected by conductivity data, in turn
Reflect the water quality of rural domestic sewage treatment facility water inlet.
However, above-mentioned rule is but not present in other kinds of sewage, and such as: municipal sewage (city domestic sewage and city
Production waste) in conductivity and total nitrogen, ammonia nitrogen and total phosphorus concentration between there is no preferably linear relationships；And rural area is raw
Other indexs in sewage living, such as: it is also deposited without linear relationship between COD, SS concentration, and the concentration of total nitrogen, ammonia nitrogen and total phosphorus
?；The conductivity of rural area production waste, such as: livestock-raising sewage, family's brewing sewage or the Peasants Joy sewage effluent of casual household
Deng conductivity, between the concentration of total nitrogen, ammonia nitrogen and total phosphorus also without linear relationship exist.Even, in domestic sewage in rural areas
Excrement and urine waste whether pass through septic tank processing, also to the linear pass between its conductivity and the concentration of total nitrogen, ammonia nitrogen and total phosphorus
System impacts, and test discovery, the conductivity in the sewage by septic tank processing does not only have weaker linear phase with ammonia nitrogen
Guan Xing, it is invalid with total nitrogen and total phosphorus linear relationship.
Rural domestic sewage treatment facility of the present invention is made of water inlet conditioning tank and sewage-treatment plant two parts；
Elevator pump is located in water inlet conditioning tank, and the water inlet of rural domestic sewage treatment facility refers into water conditioning tank (or conditioning tank)
Sewage, the water outlet of rural domestic sewage treatment facility refer to sewage-treatment plant treated water outlet.Sewage of the present invention
The pollutant volumetric loading or pollutant surface loading that processing unit can bear refer to all kinds of sewage-treatment plants during installation
Amount with regard to the total nitrogen, ammonia nitrogen and the total phosphorus that can bear in the fixed unit time.
Since conductivity value is related with water temperature, this field generally using 20 DEG C of water temperature when conductivity value carry out school as reference
Just, and conventional conductivity meter can generally automatically correct, so after conductivity value of the present invention is actually corrected
Conductivity value at 20 DEG C of water temperature.
Sample time, number and mode can all influence the accuracy of linear relationship between conductivity and pollutant concentration.Make
To be preferred, in step (1), the morning on the day of sampling, noon and evening take water sample three times respectively, with pollutant in water sample three times
The average value of concentration and conductivity is as final sampling result.
Preferably, the conductivity meter is on-line monitoring conductivity meter in step (3), the probe of conductivity meter passes through
Bracket is fixed on the inner wall of conditioning tank, apart from conditioning tank inner wall 20-50cm, at 0~30cm below low liquid level, and is located at
The exit of return pipe.
Being fixed by the bracket probe can prevent probe from flowing with water flow in conditioning tank and colliding the borehole wall, and probe is caused to damage
It is bad；Probe is placed in below low liquid level at 0~30cm, is to guarantee that conductivity meter is immersed in water body always；And it will probe
The exit of return pipe is placed in, it can be achieved that irregular automatic cleaning of the phegma to probe.
High liquid level and low liquid level are respectively equipped in conditioning tank, occurrence is set according to the actual situation；Pass through liquid level
Just the switch to control elevator pump is one of the traditional regulation method of rural domestic sewage treatment facility, existing adjusting method
Are as follows: pump startup is promoted when actual liquid level is higher than high liquid level, is started to draw water from conditioning tank into anaerobic pond or artificial swamp, is worked as reality
When border liquid level is lower than low liquid level, elevator pump is closed, and is stopped pumping.
Preferably, the outside of the probe is fixed with protection sleeve pipe.The protection sleeve pipe is the pvc pipe of perforation, for keeping away
Exempt from the contact-impact in conditioning tank compared with bigger material and probe, the possibility for also avoiding probe from contacting with borehole wall direct collision.
The processing work of linear relationship and specific domestic sewage in rural areas between conductivity and the concentration of total nitrogen, ammonia nitrogen and total phosphorus
Skill is unrelated, so, theoretically, the adoptable rural domestic sewage treatment facility in this field at present, such as: A2O, AO, SBR, detest
Oxygen-biological aerated filter and anaerobism-artificial swamp etc. are applicable in the method for the present invention.
Preferably, selection is carried out using the rural domestic sewage treatment facility of identical sewage-treatment plant in step (1)
It is unified to adjust；The sewage-treatment plant is A2O facility or anaerobism-artificial swamp facility.
Further, in step (3), circulation pattern is set by elevator pump, every 3~8 hours open an elevator pump,
The pollutant volumetric loading that can bear according to sewage-treatment plant calculates the duration that elevator pump is opened.
Further, when sewage-treatment plant is A2When O facility, the calculation formula of elevator pump opening time is as follows:
Wherein, it is h that t, which is the duration unit that each elevator pump is opened,；LTNFor A2The volumetric loading of TN, L in O facilityNH3-NFor
A2NH in O facility3The volumetric loading of-N, LTPFor A2The volumetric loading of TP in O facility, unit g/m3d；VEffectivelyFor A2O facility has
Imitate volume, unit m3；N be daily water inlet number, 3-8 times/d；X is conductivity, unit mS/cm；Q is the specified stream of elevator pump
Amount, unit m3/h；The slope of a equation of linear regression between conductivity and pollutant concentration；B is that conductivity and pollutant are dense
The intercept of equation of linear regression between degree.
A2The pollutant volumetric loading of O facility is general are as follows: LTNFor 150-600g/m3d；LNH3-NFor 80-500g/m3d；LTPFor
50-200g/m3d。
Further, when sewage-treatment plant is anaerobism-artificial swamp facility, the calculating of elevator pump opening time is public
Formula is as follows:
Wherein, it is h that t, which is the duration unit that each elevator pump is opened,；LTNIt is negative for the surface anaerobism-artificial swamp facility TN
Lotus, LNH3-NFor anaerobism-artificial swamp facility NH3The surface loading of-N, LTPFor anaerobism-artificial swamp facility TP surface loading,
Unit is g/m2d；SEffectivelyFor the effective area of artificial swamp facility, unit m2；N be daily water inlet number, 4-12 times/d；X is
Conductivity, unit mS/cm；Q is elevator pump metered flow, unit m3/h；A is linear between conductivity and pollutant concentration
The slope of regression equation；The intercept of b equation of linear regression between conductivity and pollutant concentration.
Anaerobism-artificial swamp facility pollutant surface loading is general are as follows: LTNFor 5-15g/m2D, LNH3-NFor 2-10g/
m2D, LTPFor 0.5-5g/m2d。
Further, conductivity value is the conductivity average value that elevator pump opens preceding 0~15min.
Conductivity on-line computing model in the method for the present invention can be transmitted to automatically controlled by analog signal or other modes signal
Case, then it is transmitted to platform, realize the real time on-line monitoring of facility disengaging water conductivity.
Compared with prior art, the invention has the following advantages:
(1) present invention is set by the conductivity of measurement treatment facility water inlet to monitor and manage rural domestic sewage treatment
The influent quality applied realizes the efficient of rural domestic sewage treatment facility influent load in the case where reducing monitoring cost
It adjusts.
(2) present invention is calculated separately according to the real time data and waterlevel data of conductivity into total nitrogen, ammonia nitrogen in water conditioning tank
With the concentration and total amount of total phosphorus, the amount of the total nitrogen that can bear further according to sewage-treatment plant, ammonia nitrogen and total phosphorus calculates elevator pump
The minimum value of the sewage total amount of sewage-treatment plant is pumped into out of water inlet conditioning tank, and then in known elevator pump flows per unit time
In the case where, it determines the opening time of elevator pump, provides a kind of new quantify to existing rural domestic sewage treatment facility
The influent load adjusting method of change.
Detailed description of the invention
Fig. 1 is the conductivity and TN of 87 rural domestic sewage treatment facilities water inlet conditioning tanks in embodiment 1 and embodiment 2
Relational graph between concentration, wherein abscissa indicates sewage conductivity, unit (mS/cm), and ordinate indicates TN concentration, unit
(mg/L)。
Fig. 2 be in embodiment 1 and embodiment 2 87 rural domestic sewage treatment facilities intake conditioning tank conductivity with
NH3Relational graph between-N concentration, wherein abscissa indicates sewage conductivity, unit (mS/cm), and ordinate indicates NH3- N concentration,
Unit (mg/L).
Fig. 3 is the conductivity and TP of 87 rural domestic sewage treatment facilities water inlet conditioning tanks in embodiment 1 and embodiment 2
Relational graph between concentration, wherein abscissa indicates sewage conductivity, unit (mS/cm), and ordinate indicates TP concentration, unit
(mg/L)。
Fig. 4 is in comparative example 1 using the result of the ammonia nitrogen removal frank of 1 method of 1 method of embodiment and comparative example.
Fig. 5 is in comparative example 2 using the result of the ammonia nitrogen removal frank of 2 method of 2 method of embodiment and comparative example.
Fig. 6 is the relational graph in comparative example 3 between the conductivity and TN concentration of 12 municipal wastewater treatment plant conditioning tanks, wherein horizontal
Coordinate representation sewage conductivity, unit (mS/cm), ordinate indicate TN concentration, unit (mg/L).
Fig. 7 is the conductivity and NH of 12 municipal wastewater treatment plant conditioning tanks in comparative example 33Relational graph between-N concentration, wherein
Abscissa indicates sewage conductivity, unit (mS/cm), and ordinate indicates NH3- N concentration, unit (mg/L).
Fig. 8 is the relational graph in comparative example 3 between the conductivity and TP concentration of 12 municipal wastewater treatment plant conditioning tanks, wherein horizontal
Coordinate representation sewage conductivity, unit (mS/cm), ordinate indicate TP concentration, unit (mg/L).
Fig. 9 is the relationship in comparative example 4 between the conductivity and COD concentration of rural area Sewage Treatment Facilities water inlet conditioning tank
Figure.
Figure 10 is the relationship in comparative example 5 between the conductivity and SS concentration of rural area Sewage Treatment Facilities water inlet conditioning tank
Figure.
Figure 11 is the relationship in comparative example 6 between the conductivity and TN concentration of rural area Sewage Treatment Facilities water inlet conditioning tank
Figure.
Figure 12 is the conductivity and NH of rural area Sewage Treatment Facilities water inlet conditioning tank in comparative example 63Between-N concentration
Relational graph.
Figure 13 is the relationship in comparative example 6 between the conductivity and TP concentration of rural area Sewage Treatment Facilities water inlet conditioning tank
Figure.
Specific embodiment
The invention will be further described combined with specific embodiments below, and what is be exemplified below is only specific implementation of the invention
Example, but protection scope of the present invention is not limited only to this.
Since the linear relationship between conductivity and pollutant concentration is not used by by rural domestic sewage treatment facility
The influence of technology type, so, the linear relationship chart in embodiment 1 and embodiment 2 between conductivity and pollutant concentration is identical.
Embodiment 1A2The rural domestic sewage treatment facility of O technique
A kind of monitoring and managing method of rural domestic sewage treatment facility, comprising the following steps:
(1) 87 rural domestic sewage treatment facilities are randomly selected in Jiaxing City, Zhejiang Province, to 87 website conditioning tanks
Interior domestic sewage in rural areas is sampled, and TN, NH in test sample3The concentration and conductivity of-N, TP；Respectively on the day of sampling
Morning, noon and take water sample three times at night, using the average value of pollutant concentration and conductivity in water sample three times as finally taking
Sample result.
(2) according to the detection data of sample in step (1), linear regression analysis and equation model is carried out, conductivity is obtained
With TN, NH3- N, TP concentration between linear relationship；
Wherein, equation of linear regression are as follows: y=ax+b；X is conductivity, y TN, NH3- N or TP；
The pollutant concentration y in domestic sewage in rural areas is predicted based on conductivity x, establishes prediction model:
TN:y=0.0723x-31.228 (R2=0.7745)；
NH3-N:y=0.0712x-34.516 (R2=0.785)；
TP:y=0.0059x-2.6007 (R2=0.7468)；
Related coefficient (the R of model2) higher, show conductivity and TN, NH3The good relationship of-N, TP concentration, model
Matching degree is higher.
It (3) is 15m with a dischargeable capacity3A2For O process facility, sewage collecting is in conditioning tank, by mentioning
Pump promotion is risen to be handled followed by anaerobic pond, anoxic pond, aerobic tank.Total nitrogen, ammonia nitrogen, the total phosphorus volumetric loading of above-mentioned facility
Respectively 180,100,50g/m3D, elevator pump normal flow are 3t/h, and elevator pump opens primary, unlatching 6 times daily every 4h.
Installation on-line monitoring conductivity meter, the probe of conductivity meter in the conditioning tank of each rural domestic sewage treatment facility
It is fixed by the bracket on the inner wall of conditioning tank, apart from conditioning tank inner wall 35cm, at 15cm below low liquid level, and is located at back
The exit of flow tube.The outside of probe is equipped with protection sleeve pipe, and protection sleeve pipe is the pvc pipe of perforation.
Conductivity value (average value of 15min before elevator pump is opened) is measured, according to the conductivity value of acquisition, controls to adjust pond
Interior elevator pump each opening time；
Certain day the 1-6 times, measured conductivity average value are followed successively by 891,1230,1005,985,1206,1065mS/
cm。
The calculation formula of elevator pump opening time is as follows:
Wherein, it is h that t, which is the duration unit that each elevator pump is opened,；LTNFor A2The volumetric loading of TN, L in O facilityNH3-NFor
A2NH in O facility3The volumetric loading of-N, LTPFor A2The volumetric loading of TP in O facility, unit g/m3d；VEffectivelyFor A2O facility has
Imitate volume, unit m3；N is that water inlet number, unit are secondary/d daily；X is conductivity, unit mS/cm；Q is elevator pump volume
Constant flow, unit m3/h。
According to A2O facility formula is calculated
Comparative example 1
It is 15m with 2 groups of dischargeable capacitys3And the A that operational situation is similar2For O facility, 1 group uses 1 monitoring and managing method of embodiment
Operated, another group operated using conventional method (that is: when liquid level is higher than high water level, disposably will be in conditioning tank
Sewage lifting enters facility anaerobic pond, until liquid level is lower than low water level).
When daily 8, when 14, to going out water sampling 3 times in sewage and wet well in facility conditioning tank when 20, test ammonia nitrogen is dense
Degree, continues 10 days, calculates every daily mean removal rate of ammonia nitrogen.
As a result as shown in Figure 4: conventional set is apparently higher than using the ammonia nitrogen removal frank of the facility of 1 monitoring and managing method of embodiment operating
It applies, and removal effect is more stable.
2 anaerobism of embodiment-artificial wetland process rural domestic sewage treatment facility
(1) 87 rural domestic sewage treatment facilities are randomly selected in Jiaxing City, Zhejiang Province, to 87 website conditioning tanks
Interior domestic sewage in rural areas is sampled, and TN, NH in test sample3The concentration and conductivity of-N, TP；Respectively on the day of sampling
Morning, noon and take water sample three times at night, using the average value of pollutant concentration and conductivity in water sample three times as finally taking
Sample result.
(2) according to the detection data of sample in step (1), linear regression analysis and equation model is carried out, conductivity is obtained
With TN, NH3- N, TP concentration between linear relationship；
Wherein, equation of linear regression are as follows: y=ax+b；X is conductivity, y TN, NH3- N or TP；
The pollutant concentration y in domestic sewage in rural areas is predicted based on conductivity x, establishes prediction model:
TN:y=0.0723x-31.228 (R2=0.7745)；
NH3-N:y=0.0712x-34.516 (R2=0.7985)；
TP:y=0.0059x-2.6007 (R2=0.7468)；
Related coefficient (the R of model2) higher, show conductivity and TN, NH3The good relationship of-N, TP concentration, model
Matching degree is higher.
It (3) is 40m with an effective area2Anaerobism+vertical current constructed wetland treatment facility for, which mainly has
Conditioning tank and artificial swamp are constituted, and capital equipment is elevator pump, and the sewage collected in conditioning tank flows into Manual moist by elevator pump
Ground is handled.The elevator pump normal flow of above-mentioned facility is 3t/h.Total nitrogen, ammonia nitrogen, the total phosphorus surface loading point of above-mentioned facility
It Wei not 10,8,2g/m2D, elevator pump normal flow are 3t/h, and elevator pump opens primary, unlatching 6 times daily every 4h.
Installation on-line monitoring conductivity meter, the probe of conductivity meter in the conditioning tank of the rural domestic sewage treatment facility
It is fixed by the bracket on the inner wall of conditioning tank, apart from conditioning tank inner wall 35cm, at 15cm below low liquid level, and is located at back
The exit of flow tube.The outside of probe is equipped with protection sleeve pipe, and protection sleeve pipe is the pvc pipe of perforation.
Conductivity value (average value of 15min before elevator pump is opened) is measured, according to the conductivity value of acquisition, controls to adjust pond
Interior elevator pump each opening time；
Certain day the 1-6 times, measured conductivity value are followed successively by 1056,1125,975,859,1352,1248mS/cm.
When sewage-treatment plant is anaerobism-artificial swamp facility, the calculation formula of elevator pump opening time is as follows:
Wherein, it is h that t, which is the duration unit that each elevator pump is opened,；LTNFor the surface loading of artificial swamp facility TN,
LNH3-NFor NH in sewage-treatment plant3The surface loading of-N, LTPFor the surface loading of TP in artificial swamp facility, unit g/
m2d；SEffectivelyFor the effective area of artificial swamp facility, unit m2；N is that water inlet number, unit are secondary/d daily；X is conductivity,
Unit is mS/cm；Q is elevator pump metered flow, unit m3/h。
It is calculated according to anaerobism+vertical current constructed wetland formula
Comparative example 2
It is 40m with 2 groups of effective areas2And for artificial swamp facility that operational situation is similar, 1 group uses embodiment 2
Monitoring and managing method is operated, and another group is operated using conventional method (when liquid level is higher than high water level, disposably by conditioning tank
In sewage lifting enter facility anaerobic pond, until liquid level be lower than low water level).
When daily 8, when 14, to going out water sampling 3 times in sewage and wet well in facility conditioning tank when 20, test ammonia nitrogen is dense
Degree, continues 10 days, calculates every daily mean removal rate of ammonia nitrogen.
As a result as shown in Figure 5: conventional set is apparently higher than using the ammonia nitrogen removal frank of the facility of 2 monitoring and managing method of embodiment operating
It applies, and removal effect is more stable.
Comparative example 3
To 12 municipal sewage plant's water inlet data investigations, equally sampled in conditioning tank, sampling mode and embodiment 1
It is identical, then test the numerical value of its total nitrogen, ammonia nitrogen, total phosphorus and conductivity.
As the result is shown (Fig. 6~8): conductivity and total nitrogen, ammonia nitrogen, total phosphorus concentration relationship do not show and rural area is raw
The similar linear dependence of sewage living.
Comparative example 4
This comparative example determines the concentration of COD in domestic sewage in rural areas, and sampling method is same as Example 1, analyzes data
It was found that (Fig. 9): COD concentration and conductivity linear relationship are bad in domestic sewage in rural areas: linearly dependent coefficient R2Only 0.259.
Comparative example 5
This comparative example determines the concentration of SS in domestic sewage in rural areas, and sampling method is same as Example 1, analysis data hair
Existing (Figure 10): SS concentration and conductivity linear relationship are bad in domestic sewage in rural areas: linearly dependent coefficient R2Only 0.0007.
Comparative example 6
30 rural domestic sewage treatment facilities are randomly selected in Jiaxing City, Zhejiang Province, the rural domestic sewage treatment facility
Water inlet from three strands of sewage, be respectively: excrement and urine waste (being handled without septic tank), kitchen waste water and washing sewage.Together
Sample samples in conditioning tank, and sampling mode is same as Example 1, then tests the number of its total nitrogen, ammonia nitrogen, total phosphorus and conductivity
Value.As the result is shown (Figure 11~13): conductivity and the relationship of total nitrogen, ammonia nitrogen, total phosphorus concentration do not show embodiment 1 and reality
Apply the linear dependence that domestic sewage in rural areas is so good in example 2.
Claims (9)
1. a kind of adjusting method of rural domestic sewage treatment facility influent load, which comprises the following steps:
(1) select it is several by water inlet conditioning tank and sewage-treatment plant rural domestic sewage treatment facility dimerous, into
It is equipped in water conditioning tank by the elevator pump of sewage input sewage-treatment plant in pond；It intakes to each rural domestic sewage treatment facility
Sewage in conditioning tank is sampled, the concentration and conductivity of pollutant in test sample；The domestic sewage in rural areas is by kitchen
It sewage, washing sewage and is formed through septic tank treated excrement and urine waste；The pollutant is total nitrogen, ammonia nitrogen or total phosphorus；
(2) according to the detection data of sample in step (1), linear regression analysis and equation model are carried out, obtains conductivity and dirt
Contaminate the linear relationship between object concentration；
Wherein, equation of linear regression are as follows: y=ax+b；X is conductivity, and y is the concentration of pollutant, and a is slope, and b is intercept；
(3) conductivity meter and liquidometer are installed in the water inlet conditioning tank of each rural domestic sewage treatment facility, monitor respectively into
Concentration and total amount into pollutant in water conditioning tank is calculated in the conductivity value and height of water level of sewage in water conditioning tank, then
According to the pollutant volumetric loading or pollutant surface loading of sewage-treatment plant, the duration that elevator pump is opened is determined, to adjust
Save the influent load of rural domestic sewage treatment facility.
2. the adjusting method of rural domestic sewage treatment facility influent load as described in claim 1, which is characterized in that step
(1) in, the morning on the day of sampling, noon and water sample three times is taken at night respectively, is averaged with pollutant concentration in water sample three times
The average value of value and conductivity is as final sampling result.
3. the adjusting method of rural domestic sewage treatment facility influent load as described in claim 1, which is characterized in that step
(3) in, the conductivity meter is on-line monitoring conductivity meter, and the probe of conductivity meter is fixed by the bracket the inner wall in conditioning tank
On, apart from conditioning tank inner wall 20-50cm, at 0~30cm below low liquid level, and it is located at the exit of return pipe.
4. the adjusting method of rural domestic sewage treatment facility influent load as claimed in claim 3, which is characterized in that described
The outside of probe is equipped with protection sleeve pipe.
5. the adjusting method of rural domestic sewage treatment facility influent load as described in claim 1, which is characterized in that step
(1) in, selection carries out unified adjusting using the rural domestic sewage treatment facility of identical sewage-treatment plant；The sewage treatment
Device is A2O facility or anaerobism-artificial swamp facility.
6. the adjusting method of rural domestic sewage treatment facility influent load as described in claim 1, which is characterized in that step
(3) in, circulation pattern is set by elevator pump, every 3~8 hours open an elevator pump, according to sewage-treatment plant institute energy
The pollutant volumetric loading or pollutant surface loading of receiving calculate the duration that elevator pump is opened.
7. the adjusting method of rural domestic sewage treatment facility influent load as claimed in claim 6, which is characterized in that work as dirt
Water treatment facilities is A2When O facility, the calculation formula of elevator pump opening time is as follows:
Wherein, t is the duration that each elevator pump is opened, unit h；LTNFor A2The volumetric loading of TN, L in O facilityNH3-NFor A2O
NH in facility3The volumetric loading of-N, LTPFor A2The volumetric loading of TP in O facility, unit g/m3d；VEffectivelyFor A2The effective body of O facility
Product, unit m3；N be daily water inlet number, 3-8 times/d；X is conductivity, unit mS/cm；Q is elevator pump metered flow,
Unit is m3/h；The slope of a equation of linear regression between conductivity and pollutant concentration；B is conductivity and pollutant concentration
Between equation of linear regression intercept.
8. the adjusting method of rural domestic sewage treatment facility influent load as claimed in claim 6, which is characterized in that work as dirt
When water treatment facilities is anaerobism-artificial swamp facility, the calculation formula of elevator pump opening time is as follows:
Wherein, it is h that t, which is the duration unit that each elevator pump is opened,；LTNFor the surface loading of artificial swamp facility TN, LNH3-NFor dirt
NH in water treatment facilities3The surface loading of-N, LTPFor the surface loading of artificial swamp facility TP, unit g/m2d；SEffectivelyFor people
The effective area of work wetland facility, unit m2；N be daily water inlet number, 4-12 times/d；X is conductivity, unit mS/cm；
Q is elevator pump metered flow, unit m3/h；The slope of a equation of linear regression between conductivity and pollutant concentration；B is
The intercept of equation of linear regression between conductivity and pollutant concentration.
9. the adjusting method of rural domestic sewage treatment facility influent load as described in claim 1, which is characterized in that step
(3) conductivity value described in is the conductivity average value of 0-15min before elevator pump is opened.
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