CN105830872B - A kind of biogas slurry NH4+- N is monitored on-line and safe utilization regulator control system and its application method - Google Patents
A kind of biogas slurry NH4+- N is monitored on-line and safe utilization regulator control system and its application method Download PDFInfo
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- CN105830872B CN105830872B CN201610225939.7A CN201610225939A CN105830872B CN 105830872 B CN105830872 B CN 105830872B CN 201610225939 A CN201610225939 A CN 201610225939A CN 105830872 B CN105830872 B CN 105830872B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/16—Control of watering
- A01G25/167—Control by humidity of the soil itself or of devices simulating soil or of the atmosphere; Soil humidity sensors
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C23/00—Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
- A01C23/04—Distributing under pressure; Distributing mud; Adaptation of watering systems for fertilising-liquids
- A01C23/042—Adding fertiliser to watering systems
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Abstract
The invention discloses a kind of biogas slurry NH4 +N is monitored on-line and safe utilization regulator control system, including NH4 +N on-line computing models, cental system control cabinet, biogas slurry pond, cistern, irrigation conduit, pump house, frequency converter, turbine stirrer；Pump house is pumped by biogas slurry, water pump forms wherein biogas slurry and pumps water pump opposite with irrigation conduit junction and irrigation conduit junction closer to irrigation conduit water outlet, and cental system control cabinet receives and processes NH4 +The signal of N on-line computing models directly controls the operation of water pump, the operation pumped by Frequency Converter Control biogas slurry, and turbine stirrer is set in irrigation conduit close to the position of irrigation conduit water outlet.Also disclose the application method of above-mentioned safe utilization system.The present invention uses NH4 +N on-line computing models monitor biogas slurry before irrigation in real time, and instruct biogas slurry and water to coordinate with ratio is applied according to monitoring result, realize based on NH4 +The operation and control of N application safety, it is ensured that the safety of plant growth also provides effective reference frame to be scientific and reasonable using biogas slurry.
Description
Technical field
The present invention relates to a kind of biogas slurry NH4 +- N is monitored on-line and safe utilization regulator control system and its application method.
Background technology
In recent years, height weight when Pollution from livestock and poultry has caused public opinion extensive concern and governments at all levels' pollution treatment decision
Depending on to realize that biogas engineering is built in waste harmless treatment and recovery energy, livestock and poultry farm one after another, obtaining set benefit
While also produce a large amount of by-product, i.e. biogas slurry.Rich in nitrogen, phosphorus, potassium, NH in biogas slurry4 +- N etc., it is direct without subsequent processing
Discharge environment will cause to seriously affect to surrounding body self-purification function, become critical issue urgently to be resolved hurrily in water environment protection,
Also long-standing problem the sound development of animal husbandry.
Farmland consumption biogas slurry be by the collective effects such as agricultural land soil and existence crops, microorganism in the soil come
Processing and the ecological method for utilizing biogas slurry are most easy implementation generally acknowledged at present and effective processing method, can alleviate natural pond
The subsequent processing pressure and processing cost of biogas slurry in gas engineering, also can demand of the partial alternative agricultural production to chemical fertilizer, drop
Low agriculture production cost, culture fertility improve crop yield and quality.
Studies have shown that pig manure and cow dung be after anaerobic fermentation, ammonium nitrogen (NH in liquid phase4 +- N) content compared with feeding liquid show
It writes and increases, the ratio for accounting for liquid phase total nitrogen is all higher than 70%, NH in pig manure and cow dung biogas slurry is also indicated that biogas engineering investigation result4 +N content is much larger than NO3 -N content, therefore should fully consider NH in biogas slurry when biogas slurry application4 +- N concentration needs fertile physiology with crop
Matching degree.Applying biogas slurry because of blindness in agricultural production causes to have been reported that when the bad phenomenon of plant growth, therefore, in big face
When product promotes and applies biogas slurry, need to consider biogas slurry NH4 +- N concentration.A kind of biogas slurry fertigation system (patent that Liu's treasured is deposited et al.
Number ZL200910146926.0) preliminary establish the framework that biogas slurry apply in drip-irrigation system, the biogas slurry filling of Gao Lihong et al.
It irrigates anti-blocking system and method (patent No. ZL201210051227.X) and has carried out preliminary promotion in anti-blocking and automation.It surrounds
The safe utilization of biogas slurry is studied, and is focused mostly in terms of pipeline anti-blocking technology, and mostly in biogas slurry dosage set by knowhow,
The foundation of shortage science especially lacks the safe utilization controlling unit of on-line monitoring in biogas slurry water-fertilizer integral system.
Invention content
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of biogas slurry NH4 +- N is monitored on-line and safe utilization
Regulator control system.
The technical solution adopted by the present invention is：A kind of biogas slurry NH4 +- N is monitored on-line and safe utilization regulator control system, including
NH4 +- N on-line computing models, cental system control cabinet, biogas slurry pond, cistern, irrigation conduit, pump house, frequency converter, turbine stirring
Device；
The pump house is pumped by biogas slurry, water pump forms, and the biogas slurry pumping water end (W.E.) is placed in biogas slurry pond, water outlet and irrigation pipe
Road connects, and the pumping for water pump end is placed in cistern, and water outlet is connect with irrigation conduit, and wherein biogas slurry pump connects with irrigation conduit
The opposite water pump in place and irrigation conduit junction are connect closer to irrigation conduit water outlet, the NH4 +- N on-line computing models detect biogas slurry
The NH of biogas slurry in pond4 +- N concentration is simultaneously real-time transmitted to cental system control cabinet, and the cental system control cabinet receives and processes
NH4 +The signal of-N on-line computing models directly controls the operation of water pump, the operation pumped by Frequency Converter Control biogas slurry, the turbine
Blender is set on irrigation conduit close to the position of irrigation conduit water outlet.
Preferably, further include a set of above soil moisture content monitor and solenoid valve；
The soil moisture content monitor is made of multiple probe moisture transducers, processing chip, control panel, the probe
Moisture transducer is uniformly distributed in the region of soil moisture content monitor control, described for detecting soil moisture in the region
Processing chip collects the signal of multiple probe moisture transducers and processing；
The irrigation conduit is three-level irrigation pipe network, is made of main pipeline, branch pipe(tube), end pipeline, diameter is passed successively
Subtract, main pipeline is connected with several branch pipe(tube)s, and the quantity of branch pipe(tube) is identical as the quantity of soil moisture content monitor, every branch pipe(tube)
It is connected with several end pipelines, end pipeline is evenly distributed on the region of corresponding soil moisture content monitor control；Each branch
Solenoid valve is equipped on pipeline, the cental system control cabinet receives and processes the signal of processing chip, the processing chip control
The keying of the solenoid valve in the soil moisture content monitor control area is made, control panel is connect with processing chip, for inputting life
Order and display data.
Preferably, further include two check valves, one of check valve is close to the water outlet that biogas slurry pumps, another check valve
Close to the water outlet of water pump.
Preferably, the biogas slurry pond is two format biogas slurry ponds, is divided into biogas slurry sedimentation basin and biogas slurry storage pool, in sedimentation basin and
Cement barricade middle and lower part between storage pool is equipped with filtering grid.
Preferably, further include fertilizer compounding device, the fertilizer compounding device includes fertilizer applicator, fertilzer sucking pipe and liquid storing barrel, the both ends of fertilizer applicator
It is both connected on main pipeline, the intermediate position of fertilizer applicator connects fertilzer sucking pipe, and the fertilzer sucking pipe other end is put into liquid storing barrel.
Preferably, the end pipeline is drip irrigation zone or fine-spraying belt, thereon dislocation punching, aperture 1.0-1.5mm.
Preferably, further include large particle filtering net cage, large particle filtering net cage by cuboid stainless steel frame,
Back purge system, three face 40-60 mesh stainless steel mesh wrap up, and large particle filter screen box opening is upward, is vertically placed in
In biogas slurry storage pool and pond, biogas slurry pump and water pump take liquid from large particle filtering net cage interior suction.
The invention also discloses based on above-mentioned biogas slurry NH4 +- N monitors the application method with safe utilization regulator control system on-line,
Its step includes：
(1), the data of processing chip real-time reception probe moisture transducer detection, preset control journey in processing chip
Sequence sums up received data and averages and screen minimum, and corresponding specific number is shown in control panel
Value, is reserved with artificial settings touchscreen button on the control panel, and the touchscreen button is set as growing for Different Crop
Required soil moisture content threshold range；
(2), the average value or minimum and the threshold value that processing chip selection probe moisture transducer monitors in real time compare,
When the real time data average value or minimum of monitoring are less than set soil moisture content bottom threshold, maincenter is issued a request to
System control box, while NH4 +- N on-line computing models monitor biogas slurry NH4 +- N concentration b simultaneously transmits a signal to cental system control
Case, cental system control cabinet is by b and NH4 +- N concentration set points a compares, according to the fortune of following logic control biogas slurry pump and water pump
Row：
Work as b<When a, biogas slurry pump is activated individually in system, and full range is run, and water pump does not start at this time；
As a≤b<When 1.5a, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system passes through frequency converter control
The frequency of adjust automatically biogas slurry operation processed, it is 1 to make biogas slurry and the ratio of water：1；
As 1.5a≤b<When 2a, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system passes through frequency converter control
The frequency of adjust automatically biogas slurry operation processed, it is 1 to make biogas slurry and the ratio of water：2；
As 2a≤b, system open simultaneously water pump and biogas slurry pump, water pump full range start, system by Frequency Converter Control from
The frequency of dynamic adjustment biogas slurry operation, it is 1 to make biogas slurry and the ratio of water：3；
When the real time data average value or minimum of the monitoring of probe moisture transducer are greater than or equal to set soil
When soil moisture content upper threshold, processing chip issues a request to cental system control cabinet, and cental system control cabinet closes biogas slurry pump and water
Pump, and processing chip is instructed to close solenoid valve；
(3) if, there are two or more than two soil moisture content monitors send out irrigation simultaneously to cental system control cabinet and ask
When asking, the sequencing that system receives instruction with cental system control cabinet is gradually irrigated, into the soil for waiting for sequence
Soil Moisture Monitoring instrument, the solenoid valve on connected branch pipe(tube) are closed, and when irrigating instruction until receiving, just unlatching is set
Apply the solenoid valve on branch pipe(tube) in greenhouse.
Preferably, the proportion relation of biogas slurry pump and water pump can be freely set on the control panel and starts biogas slurry pump and water
Pump, in this case, the running frequency of biogas slurry pump is no longer by NH4 +The influence of the signal of-N on-line computing models.
Beneficial effects of the present invention are as follows：
1, using soil moisture content monitor, facility plastic greenhouse soil moisture content is monitored in real time, in soil moisture content monitor
Control program in, flexibly devising can need water, uptake characters to set different soil moisture content ranges according to Different Crop
Threshold value compares the range threshold of real-time monitor value and setting, and sends out instruction according to comparison result and carry out automatic irrigation.It saves
It is artificial, alleviate labor intensity, demand of the crop to soil moisture content can be kept constantly, compensate for artificial irrigation amount not really
It is qualitative, improve irrigation quality and efficiency.
2, using NH4 +- N on-line computing models monitor biogas slurry before irrigation, and instruct biogas slurry according to monitoring result in real time
With water cooperation with ratio is applied, realize based on NH4 +The operation and control of-N application safety, it is ensured that the safety of plant growth,
To be scientific and reasonable effective reference frame is provided using biogas slurry.
3, using cental system control cabinet, the mutual conversion for automatically controlling and manually controlling effectively is realized so that should
System has more operability and practicability.
4, using frequency converter, progress frequency control is pumped to biogas slurry and achievees the purpose that control biogas slurry pump discharge, in water pump full range
Under conditions of operation, the operation of biogas slurry pump frequency conversion, it can be achieved that the water that is extracted with water pump of the biogas slurry amount that biogas slurry pumping takes according to certain
Ratio mixed, realize according to setting ratio carry out automatic mixing irrigation.
5, net cage is filtered using two format biogas slurry ponds and large particle, can will potentially results in line clogging in front end
Solid suspension filters out, and effectively ensures the safety of irrigation pipe network.
6, using three-level irrigation pipe network, the intensity of discharge pressure has been effectively ensured, misplace punching on drip irrigation zone or fine-spraying belt
Pore size control between 1.0-1.5mm, the blocking of drip irrigation zone or fine-spraying belt can be effectively prevent.
7, biogas slurry pipeline and waterpipe are merged by pipeline all the way by check valve, laying piping cost are saved, in master
Turbine stirrer is arranged close to branch pipe(tube) end in pipeline so that the rich water of proportioning is further mixed, and whole system is strengthened
Biogas slurry safely use performance.
8, the use of fertilizer compounding device so that biogas slurry water-fertilizer integral is easily realized, can be supported according to crop uptake characters and biogas slurry
Point content configures the fertilizer to complement one another therewith, to realize more science, more rational fertilising, has saved cost.
9, the operation that can ensure biogas slurry pump and water pump using check valve, prevents the generation poured in down a chimney so that irrigation system is more
Increase effect.
Description of the drawings
Fig. 1 is the biogas slurry NH of the embodiment of the present invention 14 +- N monitors the structural schematic diagram with safe utilization regulator control system on-line.
Fig. 2 is the structural schematic diagram of soil moisture content monitor.
Fig. 3 is the biogas slurry NH of the embodiment of the present invention 24 +- N monitors the structural schematic diagram with safe utilization regulator control system on-line.
The present invention is further elaborated below in conjunction with the accompanying drawings.
Specific implementation mode
Embodiment 1
As shown in Figure 1, this biogas slurry NH4 +- N is monitored on-line and safe utilization regulator control system, including a set of above soil moisture in the soil
Feelings monitor 1, NH4 +- N on-line computing models 2, cental system control cabinet 3, biogas slurry pond, cistern, fertilizer compounding device 18, three-level irrigation pipe
Net, pump house, solenoid valve 13, frequency converter 6；
The soil moisture content monitor 1 is by multiple probe moisture transducers 110, processing chip 120,130 groups of control panel
At the probe moisture transducer 110 is uniformly distributed in the greenhouse region of the soil moisture content monitor 1 control, big for detecting
Soil moisture in canopy, the processing chip 120 collect the signal of multiple probe moisture transducers 110 and processing；
Three-level irrigation pipe network is made of main pipeline 14, branch pipe(tube) 15, end pipeline 16, and diameter successively decreases successively, main pipeline
14 and several branch pipe(tube)s 15 connect, the quantity of branch pipe(tube) 15 is identical as the quantity of soil moisture content monitor 1, every branch pipe(tube) 15
It is connected with several end pipelines 16, end pipeline is evenly distributed on the greenhouse region of corresponding soil moisture content monitor control；
The pump house is made of biogas slurry pump 4, water pump 5, and biogas slurry pond is two format biogas slurry ponds, and external biogas slurry is through at the beginning of sedimentation basin 8
Precipitation, and enter storage pool 10 after the filtering of grid 9, effectively remove the larger solid suspension of particle in biogas slurry, and
Large particle filtering net cage 12 is placed in biogas slurry storage pool 10 and carries out further biogas slurry filtering, and large particle is filtered into net cage 12
It is designed to cuboid stainless steel frame, back purge system, three face 40-60 mesh stainless steel mesh packages, filter screen box opening is upward,
Vertical to be placed in biogas slurry storage pool 10, net cage distance from bottom bottom of pond 15-30cm, biogas slurry 4 one end suction pipes of pump, which are put into, to be filtered in net cage,
It is filtered from source, in cistern 11, also placed large particle filtering net cage 12, source water is filtered,
The suction pipe of water pump 5 is placed in filtering net cage, and the water outlet of biogas slurry pump 4 and water pump 5 connect with main pipeline, wherein biogas slurry pump and
Closer to branch pipe(tube), solenoid valve 13, institute are equipped on each branch pipe(tube) with respect to water pump and main pipeline junction for main pipeline junction
State NH4 +- N on-line computing models 2 detect the NH of biogas slurry in biogas slurry pond4 +- N concentration is simultaneously real-time transmitted to cental system control cabinet 3, institute
It states cental system control cabinet and receives and processes processing chip and NH4 +The signal of-N on-line computing models directly controls the fortune of water pump 5
Row, the operation of biogas slurry pump 4 is controlled by frequency converter 6, and the processing chip controls in the soil moisture content monitor control area
The keying of solenoid valve, control panel are connect with processing chip, and natural pond is set to for inputting order and display data, the fertilizer compounding device
Between liquid pump and main pipeline junction and water pump and main pipeline junction；
Further include two check valves 7, one of check valve is close to the water outlet that biogas slurry pumps, another check valve is close to water
The water outlet of pump prevents from because individually opening one of pump another pump being flow backwards；
The end pipeline is drip irrigation zone or fine-spraying belt, and dislocation punching, aperture 1.0-1.5mm can be effectively prevent thereon
The blocking of drip irrigation zone or fine-spraying belt；
Further include turbine stirrer 17, the turbine stirrer 17 is set to the one end of main pipeline close to branch pipe(tube), can be with
Biogas slurry in pipeline is stirred evenly with water, improves irrigation effect.
The fertilizer compounding device 18 includes fertilizer applicator, fertilzer sucking pipe and liquid storing barrel, and the both ends of fertilizer applicator are both connected on main pipeline, apply
The intermediate position of fertile device connects fertilzer sucking pipe, and the fertilzer sucking pipe other end is put into liquid storing barrel.The pressure that fertilizer applicator is formed on main pipeline
Official post obtains the liquid formulations fertilizer in fertilzer sucking pipe automatic sucking liquid storing barrel, and is transported in main pipeline, and fertilizer is uniformly mixed with water,
Improve fertilising efficiency.By installing fertilizer compounding device 18, water and fertilizer irrigation is carried out in combination with formulation liquid fertilizer, makes up biogas slurry nutrient not
Foot.Fertilizer compounding device 18 has realized large-area applications in water-fertilizer integral irrigation system, but in the present system, the purpose of application
It is more scientific, it can realize and irrigate progress rational formula fertilising in conjunction with biogas slurry, it is same to realize that biogas slurry nutrient and moisture recycle
When, it realizes and saves chemical rate of fertilizer.
Biogas slurry and water two-way irrigation conduit are merged into pipeline all the way by this system, are respectively pacified closing at biogas slurry pump 4 and water pump 5
A check valve 7 has been filled, laying piping cost has been saved.
In use, the data of processing chip real-time reception probe moisture transducer detection, preset control in processing chip
Program sums up received data and averages and screen minimum, and display is corresponding specific in control panel
Numerical value, is reserved with artificial settings touchscreen button on the control panel, and the touchscreen button is set as giving birth to for Different Crop
Long required soil moisture content threshold range；
The average value or minimum that processing chip selection probe moisture transducer monitors in real time are compared with the threshold value, work as prison
When the real time data average value or minimum of survey are less than set soil moisture content bottom threshold, cental system is issued a request to
Control cabinet, while NH4 +- N on-line computing models monitor biogas slurry NH4 +- N concentration b simultaneously transmits a signal to cental system control cabinet, in
Pivot system control box is by b and NH4 +- N concentration set points a compares, according to the operation of following logic control biogas slurry pump and water pump：
Work as b<When a, biogas slurry pump is activated individually in system, and full range is run, and water pump does not start at this time；
As a≤b<When 1.5a, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system passes through frequency converter control
The frequency of adjust automatically biogas slurry operation processed, it is 1 to make biogas slurry and the ratio of water：1；
As 1.5a≤b<When 2a, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system passes through frequency converter control
The frequency of adjust automatically biogas slurry operation processed, it is 1 to make biogas slurry and the ratio of water：2；
As 2a≤b, system open simultaneously water pump and biogas slurry pump, water pump full range start, system by Frequency Converter Control from
The frequency of dynamic adjustment biogas slurry operation, it is 1 to make biogas slurry and the ratio of water：3；
When the real time data average value or minimum of the monitoring of probe moisture transducer are greater than or equal to set soil
When soil moisture content upper threshold, processing chip issues a request to cental system control cabinet, and cental system control cabinet closes biogas slurry pump and water
Pump, and processing chip is instructed to close solenoid valve；
There are two if or when more than two soil moisture content monitors send out irrigation request to cental system control cabinet simultaneously,
The sequencing that system receives instruction with cental system control cabinet is gradually irrigated, into the soil moisture content prison for waiting for sequence
Instrument is surveyed, the solenoid valve on connected branch pipe(tube) is closed, and when irrigating instruction until receiving, just opens facility plastic greenhouse
Solenoid valve on interior branch pipe(tube).
The proportion relation of biogas slurry pump and water pump can be freely set on the control panel and starts biogas slurry pump and water pump, the situation
Under, the running frequency of biogas slurry pump is no longer by NH4 +The influence of the signal of-N on-line computing models.
Embodiment 2
As shown in figure 3, this biogas slurry NH4 +- N is monitored on-line and safe utilization regulator control system, including NH4 +- N on-line computing models
2, cental system control cabinet 3, biogas slurry pond, cistern, irrigation conduit 14, pump house, frequency converter 6, turbine stirrer 17；
The pump house is made of biogas slurry pump 4, water pump 5, and biogas slurry pond is two format biogas slurry ponds, and external biogas slurry is through at the beginning of sedimentation basin 8
Precipitation, and enter storage pool 10 after the filtering of grid 9, effectively remove the larger solid suspension of particle in biogas slurry, and
Large particle filtering net cage 12 is placed in biogas slurry storage pool 10 and carries out further biogas slurry filtering, and large particle is filtered into net cage 12
It is designed to cuboid stainless steel frame, back purge system, three face 40-60 mesh stainless steel mesh packages, filter screen box opening is upward,
Vertical to be placed in biogas slurry storage pool 10, net cage distance from bottom bottom of pond 15-30cm, biogas slurry 4 one end suction pipes of pump, which are put into, to be filtered in net cage,
It is filtered from source, in cistern 11, also placed large particle filtering net cage 12, source water is filtered,
The suction pipe of water pump 5 is placed in filtering net cage, and the water outlet of the biogas slurry pump 4 and water pump 5 is connect with irrigation conduit 14, wherein biogas slurry
Water pump opposite with 14 junction of irrigation conduit and 14 junction of irrigation conduit are pumped closer to irrigation conduit water outlet, the NH4 +-N
On-line computing model 2 detects the NH of biogas slurry in biogas slurry pond4 +- N values are simultaneously real-time transmitted to cental system control cabinet 3, the cental system
Control cabinet receives and processes NH4 +The signal of-N on-line computing models directly controls the operation of water pump 5, and biogas slurry is controlled by frequency converter 6
The operation of pump 4, the turbine stirrer 17 are set on irrigation conduit 14 close to the position of irrigation conduit water outlet；
Further include two check valves 7, one of check valve is close to the water outlet that biogas slurry pumps, another check valve is close to water
The water outlet of pump prevents from because individually opening one of pump another pump being flow backwards；
Biogas slurry and water two-way irrigation conduit are merged into pipeline all the way by this system, are respectively pacified closing at biogas slurry pump 4 and water pump 5
A check valve 7 has been filled, laying piping cost has been saved.
In use, NH4 +- N on-line computing models monitor biogas slurry NH4 +- N concentration b simultaneously transmits a signal to cental system control
Case, cental system control cabinet is by b and NH4 +- N concentration set points a compares, according to the fortune of following logic control biogas slurry pump and water pump
Row：
Work as b<When a, biogas slurry pump is activated individually in system, and full range is run, and water pump does not start at this time；
As a≤b<When 1.5a, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system passes through frequency converter control
The frequency of adjust automatically biogas slurry operation processed, it is 1 to make biogas slurry and the ratio of water：1；
As 1.5a≤b<When 2a, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system passes through frequency converter control
The frequency of adjust automatically biogas slurry operation processed, it is 1 to make biogas slurry and the ratio of water：2；
As 2a≤b, system open simultaneously water pump and biogas slurry pump, water pump full range start, system by Frequency Converter Control from
The frequency of dynamic adjustment biogas slurry operation, it is 1 to make biogas slurry and the ratio of water：3；
Also the proportion relation of biogas slurry pump and water pump can be freely set on cental system control cabinet and starts biogas slurry pump and water
Pump, in this case, the running frequency of biogas slurry pump is no longer by NH4 +The influence of the signal of-N on-line computing models.
Soil moisture content monitor and solenoid valve use 220V power voltage supplies, to ensure safety, biogas slurry pump and pump power
Within 5.5kW, voltage 380V, addition supercharging equipment is contemplated that when connection piece is irrigated in region, to obtain larger hydraulic pressure,
First, irrigation task is completed, second is that larger hydraulic pressure can reduce end pipeline hole plug.
It is specific to select average value or minimum as object is compared, it needs to be set according to specific kind of plant.
In general, the system is usually used in greenhouse gardening, in particular for NH4 +The crop of-N sensitivities, a greenhouse correspond to
A set of soil moisture content monitor and branch pipe(tube), if greenhouse area is larger or greenhouse is interior while having planted several crops, same big
A few set soil moisture content monitors of setting and branch pipe(tube) are also feasible in canopy.The system can also be used for outdoor plantation.
Claims (2)
1. a kind of application method of biogas slurry NH4+-N on-line monitoring and safe utilization regulator control system, step include：
(1), the data of processing chip real-time reception probe moisture transducer detection, preset control program in processing chip, right
Received data, which sums up, averages and screens minimum, and corresponding concrete numerical value is shown in control panel,
Artificial settings touchscreen button is reserved on the control panel, the touchscreen button is set as required for Different Crop growth
Soil moisture content threshold range；
(2), the average value or minimum and the threshold value that processing chip selection probe moisture transducer monitors in real time compare, and work as prison
When the real time data average value or minimum of survey are less than set soil moisture content bottom threshold, cental system is issued a request to
Control cabinet, while NH4+-N on-line computing models monitor biogas slurry NH4+-N concentration b and transmit a signal to cental system control cabinet, in
Pivot system control box compares b and NH4+-N concentration set points a, according to the operation of following logic control biogas slurry pump and water pump：
Work as b<When a, biogas slurry pump is activated individually in system, and full range is run, and water pump does not start at this time；
As a≤b<When 1.5a, system open simultaneously water pump and biogas slurry pump, water pump full range start, system by Frequency Converter Control from
The frequency of dynamic adjustment biogas slurry operation, it is 1 to make biogas slurry and the ratio of water：1；
As 1.5a≤b<When 2a, system open simultaneously water pump and biogas slurry pump, water pump full range start, system by Frequency Converter Control from
The frequency of dynamic adjustment biogas slurry operation, it is 1 to make biogas slurry and the ratio of water：2；
As 2a≤b, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system is adjusted automatically by Frequency Converter Control
The frequency of whole biogas slurry operation, it is 1 to make biogas slurry and the ratio of water：3；
When the real time data average value or minimum of the monitoring of probe moisture transducer are greater than or equal to set soil moisture content
When upper threshold, processing chip issues a request to cental system control cabinet, and cental system control cabinet closes biogas slurry pump and water pump, and
Processing chip is instructed to close solenoid valve；
(3) if, there are two or more than two soil moisture content monitors simultaneously to cental system control cabinet send out irrigation request when,
The sequencing that system receives instruction with cental system control cabinet is gradually irrigated, into the soil moisture content prison for waiting for sequence
Instrument is surveyed, the solenoid valve on connected branch pipe(tube) is closed, and when irrigating instruction until receiving, just opens facility plastic greenhouse
Solenoid valve on interior branch pipe(tube)；
It includes NH4+-N on-line computing models, cental system control that wherein biogas slurry NH4+-N, which is monitored on-line with safe utilization regulator control system,
Case, biogas slurry pond, cistern, irrigation conduit, pump house, frequency converter, turbine stirrer；The pump house is pumped by biogas slurry, water pump forms, institute
It states biogas slurry pumping water end (W.E.) to be placed in biogas slurry pond, water outlet is connect with irrigation conduit, and the pumping for water pump end is placed in cistern, is gone out
Water end (W.E.) is connect with irrigation conduit, and wherein biogas slurry pumps water pump opposite with irrigation conduit junction and irrigation conduit junction closer to filling
Pipe water outlet is irrigate, the NH4+-N on-line computing models detect the NH4+-N concentration of biogas slurry in biogas slurry pond and are real-time transmitted to maincenter
System control box, the cental system control cabinet receive and process the signal of NH4+-N on-line computing models, directly control water pump
Operation, the operation pumped by Frequency Converter Control biogas slurry, the turbine stirrer is set on irrigation conduit to be said close to irrigation pipe
The position at the mouth of a river.
2. the application method of biogas slurry NH4+-N on-line monitoring and safe utilization regulator control system according to claim 1, special
Sign is：The proportion relation of biogas slurry pump and water pump is freely set on the control panel and starts biogas slurry pump and water pump, the situation
Under, the running frequency of biogas slurry pump is no longer influenced by the signal of NH4+-N on-line computing models.
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