CN109534501B - A kind of monitoring and managing method of rural domestic sewage treatment facility - Google Patents
A kind of monitoring and managing method of rural domestic sewage treatment facility Download PDFInfo
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- CN109534501B CN109534501B CN201811465292.0A CN201811465292A CN109534501B CN 109534501 B CN109534501 B CN 109534501B CN 201811465292 A CN201811465292 A CN 201811465292A CN 109534501 B CN109534501 B CN 109534501B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
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Abstract
The invention discloses a kind of monitoring and managing methods of rural domestic sewage treatment facility, this method comprises: selecting several rural domestic sewage treatment facilities to be regulated, the water inlet of each rural domestic sewage treatment facility is sampled, the concentration and conductivity of pollutant in test sample；The pollutant is total nitrogen, ammonia nitrogen and/or total phosphorus；According to detection data, the linear relationship between conductivity and pollutant concentration is obtained；According to the linear relationship between conductivity and pollutant concentration, the influent quality of rural domestic sewage treatment facility is monitored；Using conductivity as warning index, the early warning range of conductivity is preset, water quality early-warning is carried out according to the conductivity value measured, and then regulate and control the operational mode of processing equipment in rural domestic sewage treatment facility.The present invention, in the case where reducing monitoring cost, realizes the efficient supervision of rural domestic sewage treatment facility to monitor and manage the influent quality of rural domestic sewage treatment facility by the conductivity of measurement treatment facility water inlet.
Description
Technical field
The present invention relates to technical field of waste water processing more particularly to a kind of monitoring parties of rural domestic sewage treatment facility
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, the composition of rural sewage treatment facility is generally all fairly simple, consist of two parts, adjusted into water respectively
Pond and sewage-treatment plant, sewage-treatment plant are broadly divided into using biological treatment device (for example, by using anaerobic- anoxic- oxic
(A2O) group technology, anaerobic-aerobic (AO) group technology, sequencing batch reactor and anaerobism, the aerobic device individually handled)
With ecological treatment apparatus (most commonly artificial wetland treatment device).
Wherein, equipment involved in the rural sewage treatment facility using biological treatment be mainly inlet water lifting pumps,
Reflux pump and Aeration fan, and equipment involved in the rural sewage treatment facility of Ecological Disposal technique is used generally only to be promoted
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, passes through control
The start and stop of blower processed and frequency regulate and control aeration quantity.In addition, the water quality and quantity due to country sewage changes greatly, generally set in processing
Applying front end will increase a water inlet conditioning tank, and the one end for conditioning tank of intaking is equipped with water inlet, and the other end is equipped with elevator pump, is promoted
Pump is set to the bottom of pond into water conditioning tank, and sewage, which is promoted by elevator pump and passes through outlet pipe, enters anaerobic pond or artificial swamp
In, the outlet pipe of elevator pump is equipped with two branches, and one is set as outlet pipe, and another is set as return pipe, to by sewage backflow
To conditioning tank, to control the flow for entering 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 pump and blower, is more dependent upon in reactor whether to maintain reasonable hydraulic loading and pollutant volume negative
Lotus.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, the overwhelming majority
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 are
The limiting factor of qualified discharge, and 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 with A2O, artificial swamp is 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 monitoring and managing method of rural domestic sewage treatment facility, this method passes through measurement treatment facility
The conductivity of water inlet to monitor the influent quality of control rural domestic sewage treatment facility, and then regulates and controls at domestic sewage in rural areas
The operational mode of processing equipment in reason facility realizes rural domestic sewage treatment and sets in the case where reducing monitoring cost
The efficient supervision applied.
Specific technical solution is as follows:
A kind of monitoring and managing method of rural domestic sewage treatment facility, comprising the following steps:
(1) several rural domestic sewage treatment facilities to be regulated are selected, in each rural domestic sewage treatment facility into
Sewage in water conditioning tank is sampled, the concentration and conductivity of pollutant in test sample；The domestic sewage in rural areas is by kitchen
It room sewage, washing sewage and is formed through septic tank treated excrement and urine waste；The pollutant is total nitrogen, ammonia nitrogen and/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 is installed in the water inlet conditioning tank of each rural domestic sewage treatment facility, according to conductivity and dirt
The linear relationship between object concentration is contaminated, the influent quality of rural domestic sewage treatment facility is monitored；
(4) during water quality monitoring, using conductivity as warning index, the early warning range of conductivity is preset, according to survey
The conductivity value obtained carries out water quality early-warning, and then regulates and controls the operational mode of processing equipment in 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
In；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；
Blower and water pump (elevator pump) are referred to as processing equipment, and blower is located in sewage-treatment plant that (part of contaminated water processing unit is calm
Machine)；The water inlet of rural domestic sewage treatment facility refers into the sewage in water conditioning tank (or conditioning tank), at domestic sewage in rural areas
The water outlet of reason facility refers to sewage-treatment plant treated water outlet.
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.
Floating ball high liquid level and low liquid level are respectively equipped in conditioning tank, occurrence is set according to the actual situation；Pass through
Height of liquid level is one of the conventional monitoring and managing method of rural domestic sewage treatment facility come the switch that controls elevator pump, it may be assumed that works as floating ball
Pump startup is promoted when higher than high liquid level, starts to draw water from conditioning tank into anaerobic pond or artificial swamp, when floating ball is lower than low liquid level
When, 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.
Further, step (4) further include:
When conductivity value is in early warning range, show rural domestic sewage treatment facility influent quality be in it is non-just
Normal state, according to the linear relationship between conductivity and pollutant concentration, regulate and control in rural domestic sewage treatment facility blower and/
Or the operational mode of elevator pump；
When conductivity value is in outside early warning range, the influent quality of default rural domestic sewage treatment facility is in normal
State keeps the operational mode of blower and/or elevator pump in former rural domestic sewage treatment facility constant.
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 treatment process of the adoptable rural domestic sewage treatment facility in this field at present, such as: A2O、
AO, SBR, anaerobism-ecological filter and anaerobism-artificial swamp etc. are applicable in the method for the present invention.
It is slightly different, should be selected as far as possible for the Supervision Measures of different treatment process rural domestic sewage treatment facilities
Same class or the treatment facility of same treatment technique carry out unified supervision.Preferably, selection is using identical in step (1)
The rural domestic sewage treatment facility for the treatment of process is supervised；The treatment process of the rural domestic sewage treatment facility is
A2O or anaerobism-artificial swamp.
The present invention is directed to A2The conductivity feature of two kinds for the treatment of process of O and anaerobism-artificial swamp has been done further deeply
Research, and sum up the conductivity early warning range and facility regulation measure suitable for above two treatment process.
Further, in step (4), when selected rural domestic sewage treatment facility uses A2When O treatment process, preset
Conductivity early warning range is < 800mS/cm and > 1400mS/cm；The operational mode of elevator pump is set as following in water inlet conditioning tank
Ring mode；
As conductivity value < 800mS/cm, the cycling element of elevator pump is first to open 60min, then close 20~60min；Blower
Frequency be 40~48HZ；
As conductivity value > 1400mS/cm, the cycling element of elevator pump is first to open 60min, then close 100~140min；
The frequency of blower is 50HZ；
When conductivity value is between 800~1400mS/cm, default rural domestic sewage treatment facility, which is in, to be operated normally
State；The cycling element of elevator pump is first to open 60min, then close 80min；The frequency of blower is 50HZ.
Further, in step (4), anaerobism-artificial wetland treatment process rural domestic sewage treatment is used when selected
When facility, presetting conductivity early warning range is < 800mS/cm and > 1200
mS/cm；The operational mode of elevator pump is set as circulation pattern in water inlet conditioning tank；
As conductivity value < 800mS/cm, the cycling element of elevator pump is first to open 15min, then close 60~80min；
As conductivity value > 1200mS/cm, the cycling element of elevator pump is to open 15min, then close 120~140min；
When conductivity value is between 800~1200mS/cm, default rural domestic sewage treatment facility, which is in, to be operated normally
State, the cycling element of elevator pump are first to open 15min, then close 100~110min.
It can change in treatment facility by the operational mode of elevator pump in control water inlet conditioning tank and the frequency of blower
HRT, and then realize the Load Regulation of rural domestic sewage treatment facility water inlet.In the method for the present invention, during elevator pump is opened, electricity
Electrical conductivity instrument is in close state；After elevator pump is closed, it is again started up conductivity meter.
The control method of conventional lift pump is: when water level is higher than high liquid level, promoting pump startup, the water of conditioning tank is all beaten
Enter in facility, until the float position in conditioning tank be lower than low liquid level, repeatedly.And control method of the invention is: being based on
The early warning range of conductivity, judges whether the conductivity value of detection is in early warning range, and then determines opening and closing for elevator pump.
So the operating condition in order to really reflect rural domestic sewage treatment facility, improves the accuracy of conductivity early warning, institute
State a certain specific value that conductivity value is not put not instead of sometime, the mean value of a period of time.
Further, the conductivity value is the conductivity average value that elevator pump opens preceding 0~1h；It is further preferred that conductivity
Value is the conductivity average value of 0-15min before elevator pump is opened.
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 controls rural domestic sewage treatment facility by the conductivity of measurement treatment facility water inlet to monitor
Influent quality, and then regulate and control the operational mode of processing equipment in rural domestic sewage treatment facility, reducing monitoring cost
In the case of, realize the efficient supervision of rural domestic sewage treatment facility.
(2) real time data of the invention according to conductivity, it can be determined that whether rural domestic sewage treatment facility is in just
Normal operating status；And by the operational mode of elevator pump and the frequency of blower in control water inlet conditioning tank, to change treatment facility
Hydraulic detention time, thus realize to rural domestic sewage treatment facility handle Load Regulation.
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.
1 A of embodiment2The 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, the rural domestic sewage treatment are randomly selected in Jiaxing City, Zhejiang Province
The water inlet of facility is three classes sewage, it may be assumed that excrement and urine waste (treated through septic tank), kitchen waste water and washing sewage.To this 87
Domestic sewage in rural areas in a website water inlet conditioning tank is sampled, and TN, NH in test sample3The concentration and conductance of-N, TP
Rate；The morning on the day of sampling, noon and water sample three times is taken at night respectively, with pollutant concentration in water sample three times and conductivity
Average value is as final sampling 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.
(3) with the A of a day output 30t2For O process facility, sewage collecting passes through promotion in conditioning tank
Pump is promoted and is handled followed by anaerobic pond, anoxic pond, aerobic tank, and aeration plate is arranged in anoxic pond and aerobic tank, passes through
Blower blasts the air of different flow, to keep anoxic to become reconciled oxygen condition respectively.The elevator pump normal flow of above-mentioned facility is 3t/
h；Blower standard air quantity is 0.31m3/ min is allowed to have frequency conversion function by installing frequency converter.
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.
According to the conductivity value of acquisition, the operational mode of each component in rural domestic sewage treatment facility is controlled；And with
Conductivity value (average value of 15min before elevator pump is opened) is warning index, and early warning range is arranged, carries out at domestic sewage in rural areas
Manage the early warning of facility.
Specific as follows: the normal range (NR) that conductivity is arranged is 800~1400mS/cm, at this point, controlling to adjust pond elevator pump
Operational mode is to open 60min/ to close 80min, so recycles, facility hydraulic detention time is made to be maintained at 10-14h；Control blower with
Rated frequency 50HZ operation.
(4) it is given a warning when conditioning tank conductivity is less than 800mS/cm, and facility elevator pump and blower is regulated and controled,
Specific control methods are as follows:
700~800mS/cm of conductivity, the operational mode for controlling to adjust pond elevator pump are to open 60min/ to close 60min；It adjusts
Blower frequency is 48HZ.
600~700mS/cm of conductivity, the operational mode for controlling to adjust pond elevator pump are to open 60min/ to close 40min；It adjusts
Blower frequency is 45HZ.
Conductivity is less than 600mS/cm, and the operational mode for controlling to adjust pond elevator pump is to open 60min/ to close 20min；Adjust wind
Unit frequency is 40HZ.
(5) it is given a warning when conductivity of intaking is greater than 1400mS/cm, and facility elevator pump is regulated and controled, it is specific to adjust
Prosecutor formula is as follows:
1400~1500mS/cm of conductivity, the operational mode for controlling to adjust pond elevator pump are to open 60min/ to close 100min.
1500~1600mS/cm of conductivity, the operational mode for controlling to adjust pond elevator pump are to open 60min/ to close 120min.
Conductivity is greater than 1600mS/cm, and the operational mode for controlling to adjust pond elevator pump is to open 60min/ to close 140min.
(6) what prediction model of the invention can be accurate, efficient, cheap predicts TN, NH in domestic sewage in rural areas3- N and TP
Concentration, and by setting conductivity early warning range, the real-time online that may be implemented to handle facility load is adjusted, and raising sets
Apply operational efficiency.
Comparative example 1
It is 30t/d and the similar A of operational situation with 2 groups of day outputs2For O facility, 1 group is supervised using embodiment 1
Method is operated, and another group is operated using conventional method (that is: 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 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, the rural domestic sewage treatment are randomly selected in Jiaxing City, Zhejiang Province
The water inlet of facility is respectively from three strands of sewage: excrement and urine waste (treated through septic tank), kitchen waste water and laundry are dirty
Water.Domestic sewage in rural areas in 87 website conditioning tanks is sampled, and TN, NH in test sample3- N, TP concentration and
Conductivity；The morning on the day of sampling, noon and evening take water sample three times respectively, with pollutant concentration and conductance in water sample three times
The average value of rate is as final sampling 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.
(3) by taking the anaerobism of a day output 10t+vertical current constructed wetland treatment facility as an example, which mainly has tune
It saves pond and artificial swamp is constituted, capital equipment is elevator pump, and the sewage collected in conditioning tank flows into artificial swamp by elevator pump
It is handled.The elevator pump normal flow of above-mentioned facility is 3t/h.
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.
According to the conductivity value of acquisition, the operational mode of each component in rural domestic sewage treatment facility is controlled；And with
Conductivity value is warning index, and early warning range is arranged, and carries out the early warning of rural domestic sewage treatment facility.
It is specific as follows:
The normal range (NR) that conductivity is arranged is 800~1200mS/cm, at this point, controlling to adjust the operational mode of pond elevator pump
110min is closed to open 15min/, is so recycled.
(4) it is given a warning when conditioning tank conductivity is less than 800mS/cm, and facility elevator pump is regulated and controled, it is specific to adjust
Prosecutor formula is as follows:
700~800mS/cm of conductivity, the operational mode for controlling to adjust pond elevator pump are to open 15min/ to close 80min.
600~700mS/cm of conductivity, the operational mode for controlling to adjust pond elevator pump are to open 15min/ to close 70min.
Conductivity is less than 600mS/cm, and the operational mode for controlling to adjust pond elevator pump is to open 15min/ to close 60min.
(5) it is given a warning when conductivity of intaking is greater than 1200mS/cm, and facility elevator pump is regulated and controled, it is specific to adjust
Prosecutor formula is as follows:
1200~1300mS/cm of conductivity, the operational mode for controlling to adjust pond elevator pump are to open 15min/ to close 120min.
1300~1400mS/cm of conductivity, the operational mode for controlling to adjust pond elevator pump are to open 15min/ to close 130min.
Conductivity is greater than 1500mS/cm, and the operational mode for controlling to adjust pond elevator pump is to open 15min/ to close 140min.
(6) what prediction model of the invention can be accurate, efficient, cheap predicts TN, NH3-N and TP in domestic sewage in rural areas
Concentration, and by setting conductivity early warning range, the real-time online that may be implemented to handle facility load is adjusted, and raising sets
Apply operational efficiency.
Comparative example 2
By taking 2 groups of artificial swamp facilities that day output is 10t/d's and operational situation is similar as an example, 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 linear dependence so good with domestic sewage in rural areas in embodiment 2.
Claims (5)
1. a kind of monitoring and managing method of rural domestic sewage treatment facility, which comprises the following steps:
(1) several rural domestic sewage treatment facilities to be regulated are selected, are adjusted to intaking in each rural domestic sewage treatment facility
Sewage in section pond is sampled, the concentration and conductivity of pollutant in test sample；The domestic sewage in rural areas is by kitchen dirt
It water, washing sewage and is formed through septic tank treated excrement and urine waste；The pollutant is total nitrogen, ammonia nitrogen and/or total phosphorus；
Selection is supervised using the rural domestic sewage treatment facility of same treatment technique；The rural domestic sewage treatment is set
The treatment process applied is A2O or anaerobism-artificial swamp；
(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 is installed in the water inlet conditioning tank of each rural domestic sewage treatment facility, according to conductivity and pollutant
Linear relationship between concentration monitors the influent quality of rural domestic sewage treatment facility；
(4) during water quality monitoring, using conductivity as warning index, the early warning range of conductivity is preset, according to what is measured
Conductivity value carries out water quality early-warning, and then regulates and controls the operational mode of processing equipment in rural domestic sewage treatment facility；
When conductivity value is in early warning range, show that the influent quality of rural domestic sewage treatment facility is in improper shape
State regulates and controls blower in rural domestic sewage treatment facility and/or mentions according to the linear relationship between conductivity and pollutant concentration
Rise the operational mode of pump；
When conductivity value is in outside early warning range, the influent quality of default rural domestic sewage treatment facility is in normal shape
State keeps the operational mode of blower and/or elevator pump in former rural domestic sewage treatment facility constant；
When selected rural domestic sewage treatment facility uses A2When O treatment process, presetting conductivity early warning range is < 800mS/
Cm and > 1400mS/cm；The operational mode of elevator pump is set as circulation pattern in water inlet conditioning tank；
As conductivity value < 800mS/cm, the cycling element of elevator pump is first to open 60min, then close 20~60min；The frequency of blower
Rate is 40~48 HZ；
As conductivity value > 1400mS/cm, the cycling element of elevator pump is first to open 60min, then close 100~140min；Blower
Frequency be 50 HZ；
When conductivity value is between 800~1400mS/cm, default rural domestic sewage treatment facility, which is in, operates normally shape
State；The cycling element of elevator pump is first to open 60min, then close 80min；The frequency of blower is 50 HZ；
When selecting using anaerobism-artificial wetland treatment process rural domestic sewage treatment facility, conductivity early warning model is preset
It encloses for < 800mS/cm and > 1200mS/cm；The operational mode of elevator pump is set as circulation pattern in water inlet conditioning tank；
As conductivity value < 800mS/cm, the cycling element of elevator pump is first to open 15min, then close 60~80min；
As conductivity value > 1200mS/cm, the cycling element of elevator pump is to open 15min, then close 120~140min；
When conductivity value is between 800~1200mS/cm, default rural domestic sewage treatment facility, which is in, operates normally shape
State, the cycling element of elevator pump are first to open 15min, then close 100~110min.
2. the monitoring and managing method of rural domestic sewage treatment facility as described in claim 1, which is characterized in that in step (1), point
Morning, noon and evening not on the day of sampling take water sample three times, with the average value and conductance of pollutant concentration in water sample three times
The average value of rate is as final sampling result.
3. the monitoring and managing method of rural domestic sewage treatment facility as described in claim 1, which is characterized in that in step (3), institute
Conductivity meter is stated as on-line monitoring conductivity meter, the probe of conductivity meter is fixed by the bracket on the inner wall of conditioning tank, distance
Conditioning tank inner wall 20-50cm at 0~30cm below low liquid level, and is located at the exit of return pipe.
4. the monitoring and managing method of rural domestic sewage treatment facility as claimed in claim 3, which is characterized in that outside the probe
Portion is equipped with protection sleeve pipe.
5. the monitoring and managing method of the rural domestic sewage treatment facility as described in right wants 1, which is characterized in that the conductivity value is
Elevator pump opens the conductivity average value of preceding 0~1h.
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| CN110132629B (en) * | 2019-06-06 | 2020-03-10 | 浙江清华长三角研究院 | Method for predicting operation effectiveness of rural domestic sewage treatment facility by using support vector machine |
| CN110146122B (en) * | 2019-06-06 | 2020-02-14 | 浙江清华长三角研究院 | Method for predicting operation effectiveness of rural domestic sewage treatment facility |
| CN110186505B (en) * | 2019-06-06 | 2020-02-14 | 浙江清华长三角研究院 | Method for predicting standard reaching condition of rural domestic sewage treatment facility effluent based on support vector machine |
| CN111689647B (en) * | 2020-06-12 | 2022-09-27 | 南京大学盐城环保技术与工程研究院 | Method for determining OUR early warning value of comprehensive pipe-taking sewage plant |
| CN112162017A (en) * | 2020-09-28 | 2021-01-01 | 江苏蓝创智能科技股份有限公司 | Water pollution standard exceeding monitoring method, device and system |
| CN112624338B (en) * | 2020-12-15 | 2022-06-21 | 浙江清华长三角研究院 | Self-adaptive adjustment method for operation mode of rural domestic sewage treatment facility under rainstorm or rainy season situation |
| CN112964843A (en) * | 2021-01-26 | 2021-06-15 | 清华大学 | Internet of things sensor system for monitoring water quality of sewage treatment facility and monitoring method |
| CN113666587A (en) * | 2021-09-10 | 2021-11-19 | 浙江双良商达环保有限公司 | Fluctuation type high-concentration rural sewage integrated system and treatment process |
| CN113848237A (en) * | 2021-09-18 | 2021-12-28 | 上海电气数智生态科技有限公司 | Sewage quality monitoring method based on COD soft measurement |
| CN114166896B (en) * | 2021-11-17 | 2023-07-18 | 长江水资源保护科学研究所 | Rapid identification method and system for heavy metal vanadium pollution zone range of water body |
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