CN105838593A - Biogas slurry COD on-line monitoring and safe utilization regulating system and use method thereof - Google Patents
Biogas slurry COD on-line monitoring and safe utilization regulating system and use method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
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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
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- 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
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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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- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
- C12M27/02—Stirrer or mobile mixing elements
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/30—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration
- C12M41/32—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration of substances in solution
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- 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
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Abstract
The invention discloses a biogas slurry COD on-line monitoring and safe utilization regulating system. The biogas slurry COD on-line monitoring and safe utilization regulating system comprises a COD on-line monitoring instrument, a central system control box, a biogas slurry pool, a water storage pool, an irrigation pipeline, a pump room, a frequency converter and a turbine stirrer, wherein the pump room is composed of a biogas slurry pump and a water pump, the joint of the biogas slurry pump and the irrigation pipeline is closer to the water outlet of the irrigation pipeline compared with the joint of the water pump and the irrigation pipeline, the central system control box receives and processes a signal of the COD on-line monitoring instrument, and directly controls the operation of the water pump, the frequency converter controls the operation of the biogas slurry pump, and the turbine stirrer is arranged at the position, close to the water outlet of the irrigation pipeline, in the irrigation pipeline. The invention further discloses a use method of the safe utilization system. According to the system and the method provided by the invention, the COD on-line monitoring instrument is adopted for carrying out real-time monitoring on the biogas slurry before irrigation, and the combined application ratio of the biogas slurry to water is guided according to the monitoring result, so that the operating control based on the COD application safety is realized, further, the growth safety of crops is guaranteed, and in addition, an effective reference basis is provided for scientifically and reasonably utilizing the biogas slurry.
Description
Technical field
The present invention relates to a kind of biogas slurry COD on-line monitoring and safe utilization regulator control system and using method thereof.
Background technology
In recent years, Pollution from livestock and poultry has caused great attention when public opinion extensive concern and governments at all levels' pollution treatment decision-making,
For realizing excrement dirt harmless treatment and recovery energy, livestock and poultry farm builds biogas engineering one after another, is obtaining set benefit
Also create substantial amounts of accessory substance, i.e. biogas slurry simultaneously.Rich in nitrogen, phosphorus, potassium, COD etc. in biogas slurry, straight without subsequent treatment
Running in and put environment and will cause surrounding body self-purification function and have a strong impact on, the key becoming urgently to be resolved hurrily in water environment protection is asked
Topic, also long-standing problem the sound development of animal husbandry.
Farmland biogas slurry of dissolving is that the common effect such as crops in soil, microorganism processes by agricultural land soil and existence
With utilize the ecological method of biogas slurry, be the most easily implementing and effective processing method of generally acknowledging at present, biogas work can be alleviated
The subsequent treatment pressure of biogas slurry and processing cost in journey, also can produce the demand to chemical fertilizer by part Alternative Agriculture, reduce agriculture
Industry production cost, culture fertility, improves crop yield and quality.
Biogas slurry COD (Chemical Oxygen Demand) is also called biogas slurry COD, and referring to can be by by force in biogas slurry
The oxygen equivalent of oxidizing material (generally organic matter), represents the index that in biogas slurry, reducing substances is how many.
Have research to think to use the biogas slurry containing high concentration COD to be easily caused plant growth bad.Therefore, in large scale application natural pond
During liquid, need to consider biogas slurry COD concentration.A kind of biogas slurry fertigation system (patent No. of Liu Baocun et al.
ZL200910146926.0) tentatively having established the framework that biogas slurry is applied in drip-irrigation system, the biogas slurry of Gao Lihong et al. is irrigated
Anti-blocking system and method (patent No. ZL201210051227.X) have carried out preliminary lifting in anti-blocking and automation.Around
The safe utilization research of biogas slurry, focuses mostly in terms of pipeline anti-blocking technology, is mostly to set by knowhow on biogas slurry consumption,
The foundation of shortage science, especially lacks the safe utilization controlling unit of on-line monitoring in biogas slurry water-fertilizer integral system.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of biogas slurry COD on-line monitoring regulates and controls with safe utilization
System.
The technical solution used in the present invention is: a kind of biogas slurry COD on-line monitoring and safe utilization regulator control system, exists including COD
Line monitor, cental system control cabinet, biogas slurry pond, cistern, irrigation conduit, pump house, frequency converter, turbine stirrer；
Described pump house is made up of biogas slurry pump, water pump, and described biogas slurry pumping water end (W.E.) is placed in biogas slurry pond, water side and irrigation conduit
Connecting, described pumping for water pump end is placed in cistern, and water side is connected with irrigation conduit, and wherein biogas slurry pump is with irrigation conduit even
Connect the relative water pump in place with irrigation conduit junction closer to irrigation conduit delivery port, described COD on-line computing model detection biogas slurry pond
The COD value of interior biogas slurry is also real-time transmitted to cental system control cabinet, and described cental system control cabinet receives and to process COD online
The signal of monitor, directly controls the operation of water pump, and by the operation of Frequency Converter Control biogas slurry pump, described turbine stirrer sets
It is placed on irrigation conduit the position near irrigation conduit delivery port.
Preferably, a set of above soil moisture content monitor and magnetic valve are also included；
Described soil moisture content monitor is made up of multiple probe moisture transducers, process chip, control panel, described probe water
Sub sensor is distributed in and is uniformly distributed in the region that this soil moisture content monitor controls, and is used for detecting soil moisture in this region,
Described process chip is collected the signal of multiple probe moisture transducers and processes；
Described irrigation conduit is three grades of irrigation pipe networks, is made up of main pipeline, branch pipe(tube), end pipeline, and its diameter successively decreases successively,
Main pipeline and some branch pipe(tube)s connect, and the quantity of branch pipe(tube) is identical with the quantity of soil moisture content monitor, every branch pipe(tube) with
Some end pipelines connect, and end pipeline is evenly distributed on the region that the soil moisture content monitor of correspondence controls；Each arm
Being equipped with magnetic valve on road, described cental system control cabinet receives and processes the signal of chip, described process chip controls
The keying of the magnetic valve in this soil moisture content monitor control area, control panel is connected with processing chip, is used for inputting order
With display data.
Preferably, also including two check valves, one of them check valve is near the water side of biogas slurry pump, and another check valve leans on
The water side of nearly water pump.
Preferably, described biogas slurry pond is two form biogas slurry ponds, is divided into biogas slurry sedimentation basin and biogas slurry storage pool, in sedimentation basin and storage
The cement barricade middle and lower part deposited between pond is provided with filtering grid.
Preferably, also including that fertilizer compounding device, described fertilizer compounding device include fertilizer applicator, fertilzer sucking pipe and liquid storing barrel, the two ends of fertilizer applicator are equal
Being connected on main pipeline, the middle part of fertilizer applicator connects fertilzer sucking pipe, and the fertilzer sucking pipe other end puts into liquid storing barrel.
Preferably, described end pipeline is drip irrigation zone or fine-spraying belt, and it misplaces punching, and aperture is 1.0-1.5mm.
Preferably, also including that bulky grain thing filters net cage, described bulky grain thing filters net cage by cuboid stainless steel frame, anti-
Flusher, three 40-60 mesh stainless steel mesh parcels form, and bulky grain thing filters net cage opening upwards, and vertical pendulum is placed on
In biogas slurry storage pool and pond, biogas slurry pump and water pump filter from bulky grain thing and draw liquid in net cage.
The invention also discloses using method based on above-mentioned biogas slurry COD on-line monitoring Yu safe utilization regulator control system, its step
Including:
(1), process the data that chip real-time reception probe moisture transducer detects, in processing chip, preset control program,
Received data is summed up and averages and screen minimum, and the corresponding concrete numerical value of display in control panel,
Being reserved with on described control panel and be manually set touchscreen button, described touchscreen button is set as Different Crop growth required
Soil moisture content threshold range；
(2), process chip and select the mean value monitored in real time of probe moisture transducer or minimum and this threshold ratio pair,
When the real time data mean value monitored or minimum are less than set soil moisture content bottom threshold, issue a request to maincenter
System control box, COD on-line computing model is monitored biogas slurry COD concentration b and transmits a signal to cental system control cabinet simultaneously,
B with COD concentration set point a is compared by cental system control cabinet, according to following logic control biogas slurry pump and the operation of water pump:
As b, < during a, system is activated individually biogas slurry pump, and full range runs, and now water pump does not starts；
As a≤b, < during 1.5a, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system passes through Frequency Converter Control
Automatically adjusting the frequency that biogas slurry is run, making biogas slurry is 1:1 with the ratio of water；
As 1.5a≤b, < during 2a, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system passes through frequency converter control
System adjusts the frequency that biogas slurry is run automatically, and making biogas slurry is 1:2 with the ratio of water；
As 2a≤b, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system is automatic by Frequency Converter Control
Adjusting the frequency that biogas slurry is run, making biogas slurry is 1:3 with the ratio of water；
When real time data mean value or the minimum of the monitoring of probe moisture transducer are more than or equal to set soil moisture content
During upper threshold, processing chip and issue a request to cental system control cabinet, cental system control cabinet cuts out biogas slurry pump and water pump,
And instruct process chip closedown magnetic valve；
(3) if there is two or more soil moisture content monitor to send irrigation request to cental system control cabinet simultaneously
Time, the sequencing that system receives instruction with cental system control cabinet is gradually irrigated, and enters the soil moisture in the soil waiting sequence
Feelings monitor, the magnetic valve on its branch pipe(tube) being connected is closed, and during until receiving irrigation instruction, just opening and setting
Execute the magnetic valve on branch pipe(tube) in booth.
Preferably, described control panel can freely set biogas slurry pump and the proportion relation of water pump and start biogas slurry pump and water pump,
In the case of Gai, the running frequency of biogas slurry pump be no longer affected by the signal of COD on-line computing model.
Beneficial effects of the present invention is as follows:
1, use soil moisture content monitor, facility plastic greenhouse soil moisture content is monitored in real time, at soil moisture content monitor
In control program, devise flexibly and water, uptake characters can be needed to set different soil moisture content scope thresholds according to Different Crop
Value, by the range threshold comparison of real-time monitor value Yu setting, and sends instruction according to comparison result and carries out automatic irrigation.Save
Artificial, alleviate labour intensity, it is possible to the moment keeps the crop demand to soil moisture content, compensate for artificial irrigation amount not
Certainty, improves irrigation quality and efficiency.
2, use COD on-line computing model, to irrigate before biogas slurry monitor in real time, and according to monitoring result instruct biogas slurry and
Water is joined and is executed ratio, it is achieved that uses safe operation based on COD and controls, it is ensured that the security of plant growth, is also
Scientific and reasonable biogas slurry is utilized to provide effective reference frame.
3, use cental system control cabinet, effectively achieve the mutual conversion automatically controlled with Non-follow control so that this is
System has more operability and practicality.
4, use frequency converter, biogas slurry pump is carried out VFC and reaches to control the purpose of biogas slurry pump discharge, transport at water pump full range
Under conditions of row, biogas slurry pump frequency conversion runs, and can realize biogas slurry amount that biogas slurry pumping the takes water yield with water pump extraction according to certain
Ratio mixes, it is achieved that carry out automatic mixing irrigation according to setting ratio.
5, two form biogas slurry ponds and bulky grain thing is used to filter net cage, it is possible to consolidating of line clogging will to be potentially resulted in front end
Body suspension filters out, and effectively ensure that the security of irrigation pipe network.
6, use three grades of irrigation pipe networks, dislocation punching has been effectively ensured on the intensity of discharge pressure, drip irrigation zone or fine-spraying belt
Pore size control, between 1.0-1.5mm, can effectively prevent the blocking of drip irrigation zone or fine-spraying belt.
7, by check valve, biogas slurry pipeline and waterpipe are merged into a road pipeline, save laying piping cost, supervisor
Road arranges turbine stirrer near branch pipe(tube) end so that the rich water of proportioning is mixed further, strengthens the natural pond of whole system
Liquid safely use performance.
8, the use of fertilizer compounding device so that biogas slurry water-fertilizer integral easily realizes, can be according to crop uptake characters and biogas slurry nutrient
Content, the fertilizer that complements one another therewith of configuration, thus realize more science, more reasonably apply fertilizer, saved cost.
9, use check valve to ensure that the operation of biogas slurry pump and water pump, prevent the generation poured in down a chimney so that irrigation system is more
Efficiently.
Accompanying drawing explanation
Fig. 1 is the biogas slurry COD on-line monitoring structural representation with safe utilization regulator control system of the embodiment of the present invention 1.
Fig. 2 is the structural representation of soil moisture content monitor.
Fig. 3 is the biogas slurry COD on-line monitoring structural representation with safe utilization regulator control system of the embodiment of the present invention 2.
Below in conjunction with the accompanying drawings the present invention is further elaborated.
Detailed description of the invention
Embodiment 1
As it is shown in figure 1, this biogas slurry COD on-line monitoring and safe utilization regulator control system, including a set of above soil moisture content prison
Survey instrument 1, COD on-line computing model 2, cental system control cabinet 3, biogas slurry pond, cistern, 18, three grades of irrigation pipes of fertilizer compounding device
Net, pump house, magnetic valve 13, frequency converter 6；
Described soil moisture content monitor 1 is by multiple probe moisture transducers 110, process chip 120, control panel 130 groups
Becoming, described probe moisture transducer 110 is uniformly distributed in the booth region that this soil moisture content monitor 1 controls, and is used for detecting
Soil moisture in booth, described process chip 120 is collected the signal of multiple probe moisture transducer 110 and processes；
Three grades of irrigation pipe networks are made up of main pipeline 14, branch pipe(tube) 15, end pipeline 16, and its diameter successively decreases successively, main pipeline
14 and some branch pipe(tube)s 15 connect, the quantity of branch pipe(tube) 15 is identical with the quantity of soil moisture content monitor 1, every arm
Road 15 and some end pipelines 16 connect, and end pipeline is evenly distributed on the booth that the soil moisture content monitor of correspondence controls
Region；
Described pump house is made up of biogas slurry pump 4, water pump 5, and biogas slurry pond is two form biogas slurry ponds, and external biogas slurry is through at the beginning of sedimentation basin 8
Precipitation, and after grid 9 filters, enter storage pool 10, effectively eliminate the solid suspension that in biogas slurry, particle is bigger, and
In biogas slurry storage pool 10, place bulky grain thing filtration net cage 12 carry out further biogas slurry filtration, by bulky grain thing screen pack
Case 12 is designed to cuboid stainless steel frame, back purge system, three 40-60 mesh stainless steel mesh parcels, filters net cage
Opening upwards, vertical pendulum is placed on biogas slurry storage pool 10,15-30cm at the bottom of net cage distance from bottom pond, and biogas slurry pump 4 one end suction pipe is put
Enter and filter in net cage, filtered from source, in cistern 11, also placed bulky grain thing and filter net cage 12,
Filtering source water, the suction pipe of water pump 5 is placed in filtration net cage, described biogas slurry pump 4 and the water side of water pump 5 and master
Pipeline connects, wherein biogas slurry pump and main pipeline junction relative to water pump and main pipeline junction closer to branch pipe(tube), each arm
Magnetic valve 13 it is equipped with, during described COD on-line computing model 2 detects the COD value of biogas slurry in biogas slurry pond and is real-time transmitted on road
Pivot system control box 3, described cental system control cabinet receives and processes chip and the signal of COD on-line computing model,
Directly control the operation of water pump 5, controlled the operation of biogas slurry pump 4, this soil moisture in the soil of described process chip controls by frequency converter 6
The keying of the magnetic valve in feelings monitor control area, control panel is connected with processing chip, is used for inputting order and display number
According to, described fertilizer compounding device is arranged between biogas slurry pump and main pipeline junction and water pump and main pipeline junction；
Also including two check valves 7, one of them check valve is near the water side of biogas slurry pump, and another check valve is near water pump
Water side, prevent from because individually opening one of them pump, another one pump being flow backwards；
Described end pipeline is drip irrigation zone or fine-spraying belt, and it misplaces punching, and aperture is 1.0-1.5mm, can effectively prevent from dripping
Fill band or the blocking of fine-spraying belt；
Also include that turbine stirrer 17, described turbine stirrer 17 are arranged at main pipeline one end near branch pipe(tube), can be by
Biogas slurry in pipeline stirs with water, improves irrigation effect.
Described fertilizer compounding device 18 includes fertilizer applicator, fertilzer sucking pipe and liquid storing barrel, and the two ends of fertilizer applicator are both connected on main pipeline, execute
The middle part of fertile device connects fertilzer sucking pipe, and the fertilzer sucking pipe other end puts 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 mixes with water,
Improve fertilising efficiency.By installing fertilizer compounding device 18, water and fertilizer irrigation can be carried out by combined formulation liquid fertilizer, make up biogas slurry nutrient
Not enough.Fertilizer compounding device 18, has realized large-area applications in water-fertilizer integral irrigation system, but in the present system, it has been applied
Purpose is the most scientific, it is possible to realizes combining biogas slurry irrigation and carries out rational formula fertilising, it is achieved biogas slurry nutrient and moisture recycling
While, it is achieved save chemistry rate of fertilizer.
Biogas slurry and water two-way irrigation conduit are merged into a road pipeline by native system, respectively install at biogas slurry pump 4 and water pump 5 closing on
One check valve 7, has saved laying piping cost.
During use, process the data of chip real-time reception probe moisture transducer detection, in processing chip, preset control program,
Received data is summed up and averages and screen minimum, and the corresponding concrete numerical value of display in control panel,
Being reserved with on described control panel and be manually set touchscreen button, described touchscreen button is set as Different Crop growth required
Soil moisture content threshold range；
Process chip and select the mean value monitored in real time of probe moisture transducer or minimum and this threshold ratio pair, when monitoring
When real time data mean value or minimum are less than set soil moisture content bottom threshold, issue a request to cental system control
Case, COD on-line computing model is monitored biogas slurry COD concentration b and transmits a signal to cental system control cabinet, cental system simultaneously
B with COD concentration set point a is compared by control cabinet, according to following logic control biogas slurry pump and the operation of water pump:
As b, < during a, system is activated individually biogas slurry pump, and full range runs, and now water pump does not starts；
As a≤b, < during 1.5a, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system passes through Frequency Converter Control
Automatically adjusting the frequency that biogas slurry is run, making biogas slurry is 1:1 with the ratio of water；
As 1.5a≤b, < during 2a, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system passes through frequency converter control
System adjusts the frequency that biogas slurry is run automatically, and making biogas slurry is 1:2 with the ratio of water；
As 2a≤b, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system is automatic by Frequency Converter Control
Adjusting the frequency that biogas slurry is run, making biogas slurry is 1:3 with the ratio of water；
When real time data mean value or the minimum of the monitoring of probe moisture transducer are more than or equal to set soil moisture content
During upper threshold, processing chip and issue a request to cental system control cabinet, cental system control cabinet cuts out biogas slurry pump and water pump,
And instruct process chip closedown magnetic valve；
If having two or more soil moisture content monitor simultaneously when cental system control cabinet sends irrigation request, system
The sequencing receiving instruction with cental system control cabinet is gradually irrigated, and enters the soil moisture content monitoring waiting sequence
Instrument, the magnetic valve on its branch pipe(tube) being connected is closed, and during until receiving irrigation instruction, just opens facility plastic greenhouse
Magnetic valve on interior branch pipe(tube).
Biogas slurry pump and the proportion relation of water pump be can freely set on the control panel and biogas slurry pump and water pump started, in the case of being somebody's turn to do,
The running frequency of biogas slurry pump is no longer affected by the signal of COD on-line computing model.
Embodiment 2
As it is shown on figure 3, this biogas slurry COD on-line monitoring and safe utilization regulator control system, including COD on-line computing model 2, in
Pivot system control box 3, biogas slurry pond, cistern, irrigation conduit 14, pump house, frequency converter 6, turbine stirrer 17；
Described pump house is made up of biogas slurry pump 4, water pump 5, and biogas slurry pond is two form biogas slurry ponds, and external biogas slurry is through at the beginning of sedimentation basin 8
Precipitation, and after grid 9 filters, enter storage pool 10, effectively eliminate the solid suspension that in biogas slurry, particle is bigger, and
In biogas slurry storage pool 10, place bulky grain thing filtration net cage 12 carry out further biogas slurry filtration, by bulky grain thing screen pack
Case 12 is designed to cuboid stainless steel frame, back purge system, three 40-60 mesh stainless steel mesh parcels, filters net cage
Opening upwards, vertical pendulum is placed on biogas slurry storage pool 10,15-30cm at the bottom of net cage distance from bottom pond, and biogas slurry pump 4 one end suction pipe is put
Enter and filter in net cage, filtered from source, in cistern 11, also placed bulky grain thing and filter net cage 12,
Filtering source water, the suction pipe of water pump 5 is placed in filtration net cage, described biogas slurry pump 4 and the water side of water pump 5 and filling
Irrigate pipeline 14 to connect, wherein biogas slurry pump and irrigation conduit 14 junction relative to water pump and irrigation conduit 14 junction closer to
Irrigation conduit delivery port, described COD on-line computing model 2 detects the COD value of biogas slurry in biogas slurry pond and is real-time transmitted to maincenter system
System control cabinet 3, described cental system control cabinet receives and processes the signal of COD on-line computing model, directly controls water pump 5
Running, controlled the operation of biogas slurry pump 4 by frequency converter 6, described turbine stirrer 17 is arranged on irrigation conduit 14 close
The position of irrigation conduit delivery port；
Also including two check valves 7, one of them check valve is near the water side of biogas slurry pump, and another check valve is near water pump
Water side, prevent from because individually opening one of them pump, another one pump being flow backwards；
Biogas slurry and water two-way irrigation conduit are merged into a road pipeline by native system, respectively install at biogas slurry pump 4 and water pump 5 closing on
One check valve 7, has saved laying piping cost.
During use, COD on-line computing model monitoring biogas slurry COD concentration b also transmits a signal to cental system control cabinet, maincenter
B with COD concentration set point a is compared by system control box, according to following logic control biogas slurry pump and the operation of water pump:
As b, < during a, system is activated individually biogas slurry pump, and full range runs, and now water pump does not starts；
As a≤b, < during 1.5a, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system passes through Frequency Converter Control
Automatically adjusting the frequency that biogas slurry is run, making biogas slurry is 1:1 with the ratio of water；
As 1.5a≤b, < during 2a, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system passes through frequency converter control
System adjusts the frequency that biogas slurry is run automatically, and making biogas slurry is 1:2 with the ratio of water；
As 2a≤b, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system is automatic by Frequency Converter Control
Adjusting the frequency that biogas slurry is run, making biogas slurry is 1:3 with the ratio of water；
Also can freely set biogas slurry pump and the proportion relation of water pump on cental system control cabinet and start biogas slurry pump and water pump, should
In the case of, the running frequency of biogas slurry pump is no longer affected by the signal of COD on-line computing model.
Soil moisture content monitor and magnetic valve use 220V power voltage supply, and to ensure security, biogas slurry pump and pump power exist
Within 5.5kW, voltage be 380V, when region connection sheet is irrigated it is contemplated that add supercharging equipment, to obtain bigger hydraulic pressure,
One has been irrigation task, and two is that bigger hydraulic pressure can reduce end pipeline hole plug.
Concrete selection mean value or minimum, as comparison object, need to set according to concrete kind plant.
It is said that in general, this system is usually used in greenhouse gardening, in particular for the crop that COD is sensitive, a booth correspondence is a set of
Soil moisture content monitor and branch pipe(tube), if booth area is relatively big, or planted several crop, at same booth simultaneously in booth
A few set soil moisture content monitor is inside set and branch pipe(tube) is also feasible.This system can also be used for outdoor plantation.
Claims (9)
1. biogas slurry COD on-line monitoring and a safe utilization regulator control system, including COD on-line computing model, cental system control cabinet,
Biogas slurry pond, cistern, irrigation conduit, pump house, frequency converter, turbine stirrer；
Described pump house is made up of biogas slurry pump, water pump, and described biogas slurry pumping water end (W.E.) is placed in biogas slurry pond, water side and irrigation conduit
Connecting, described pumping for water pump end is placed in cistern, and water side is connected with irrigation conduit, and wherein biogas slurry pump is with irrigation conduit even
Connect the relative water pump in place with irrigation conduit junction closer to irrigation conduit delivery port, described COD on-line computing model detection biogas slurry pond
The COD value of interior biogas slurry is also real-time transmitted to cental system control cabinet, and described cental system control cabinet receives and to process COD online
The signal of monitor, directly controls the operation of water pump, and by the operation of Frequency Converter Control biogas slurry pump, described turbine stirrer sets
It is placed on irrigation conduit the position near irrigation conduit delivery port.
Biogas slurry COD on-line monitoring the most according to claim 1 and safe utilization regulator control system, it is characterised in that: also include
A set of above soil moisture content monitor and magnetic valve；
Described soil moisture content monitor is made up of multiple probe moisture transducers, process chip, control panel, described probe water
Sub sensor is uniformly distributed in the region that this soil moisture content monitor controls, and is used for detecting soil moisture in this region, described place
Reason chip is collected the signal of multiple probe moisture transducers and processes；
Described irrigation conduit is three grades of irrigation pipe networks, is made up of main pipeline, branch pipe(tube), end pipeline, and its diameter successively decreases successively,
Main pipeline and some branch pipe(tube)s connect, and the quantity of branch pipe(tube) is identical with the quantity of soil moisture content monitor, every branch pipe(tube) with
Some end pipelines connect, and end pipeline is evenly distributed on the region that the soil moisture content monitor of correspondence controls；Each arm
Being equipped with magnetic valve on road, described cental system control cabinet receives and processes the signal of chip, described process chip controls
The keying of the magnetic valve in this soil moisture content monitor control area, control panel is connected with processing chip, is used for inputting order
With display data.
Biogas slurry COD on-line monitoring the most according to claim 2 and safe utilization regulator control system, it is characterised in that: also include
Two check valves, one of them check valve is near the water side of biogas slurry pump, and another check valve is near the water side of water pump.
Biogas slurry COD on-line monitoring the most according to claim 3 and safe utilization regulator control system, it is characterised in that: described natural pond
Liquid pool is two form biogas slurry ponds, is divided into biogas slurry sedimentation basin and biogas slurry storage pool, the cement barricade between sedimentation basin and storage pool
Middle and lower part is provided with filtering grid.
Biogas slurry COD on-line monitoring the most according to claim 4 and safe utilization regulator control system, it is characterised in that: also include
Fertilizer compounding device, described fertilizer compounding device includes fertilizer applicator, fertilzer sucking pipe and liquid storing barrel, and the two ends of fertilizer applicator are both connected on main pipeline, execute
The middle part of fertile device connects fertilzer sucking pipe, and the fertilzer sucking pipe other end puts into liquid storing barrel.
Biogas slurry COD on-line monitoring the most according to claim 5 and safe utilization regulator control system, it is characterised in that: described end
End pipeline is drip irrigation zone or fine-spraying belt, and it misplaces punching, and aperture is 1.0-1.5mm.
Biogas slurry COD on-line monitoring the most according to claim 6 and safe utilization regulator control system, it is characterised in that: also include
Bulky grain thing filters net cage, and described bulky grain thing filters net cage by cuboid stainless steel frame, back purge system, three 40-60
Mesh stainless steel mesh parcel forms, and bulky grain thing filters net cage opening upwards, and vertical pendulum is placed in biogas slurry storage pool and pond,
Biogas slurry pump and water pump filter from bulky grain thing and draw liquid in net cage.
8. biogas slurry COD on-line monitoring and a using method for safe utilization regulator control system, its step includes:
(1), process the data that chip real-time reception probe moisture transducer detects, in processing chip, preset control program, right
Received data sums up averages and screens minimum, and the corresponding concrete numerical value of display in control panel,
It is reserved with on described control panel and is manually set touchscreen button, needed for described touchscreen button is set as growing for Different Crop
Soil moisture content threshold range；
(2), process chip and select the mean value monitored in real time of probe moisture transducer or minimum and this threshold ratio pair, work as prison
When the real time data mean value surveyed or minimum are less than set soil moisture content bottom threshold, issue a request to cental system
Control cabinet, COD on-line computing model is monitored biogas slurry COD concentration b and transmits a signal to cental system control cabinet, maincenter simultaneously
B with COD concentration set point a is compared by system control box, according to following logic control biogas slurry pump and the operation of water pump:
As b, < during a, system is activated individually biogas slurry pump, and full range runs, and now water pump does not starts；
As a≤b, < during 1.5a, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system passes through Frequency Converter Control
Automatically adjusting the frequency that biogas slurry is run, making biogas slurry is 1:1 with the ratio of water；
As 1.5a≤b, < during 2a, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system passes through frequency converter control
System adjusts the frequency that biogas slurry is run automatically, and making biogas slurry is 1:2 with the ratio of water；
As 2a≤b, system opens water pump and biogas slurry pump simultaneously, and water pump full range starts, and system is automatic by Frequency Converter Control
Adjusting the frequency that biogas slurry is run, making biogas slurry is 1:3 with the ratio of water；
When real time data mean value or the minimum of the monitoring of probe moisture transducer are more than or equal to set soil moisture content
During upper threshold, processing chip and issue a request to cental system control cabinet, cental system control cabinet cuts out biogas slurry pump and water pump,
And instruct process chip closedown magnetic valve；
(3) if there being two or more soil moisture content monitor simultaneously when cental system control cabinet sends irrigation request,
The sequencing that system receives instruction with cental system control cabinet is gradually irrigated, and enters the soil moisture content prison waiting sequence
Surveying instrument, the magnetic valve on its branch pipe(tube) being connected is closed, and during until receiving irrigation instruction, just opens facility big
Magnetic valve on branch pipe(tube) in canopy.
Biogas slurry COD on-line monitoring the most according to claim 8 and the using method of safe utilization regulator control system, it is special
Levy and be: can freely set biogas slurry pump and the proportion relation of water pump on described control panel and start biogas slurry pump and water pump, these feelings
Under condition, the running frequency of biogas slurry pump is no longer affected by the signal of COD on-line computing model.
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| CN109258044A (en) * | 2018-08-30 | 2019-01-25 | 北京农业智能装备技术研究中心 | A kind of field water fertilizer managing and control system and method based on biogas slurry |
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| CN105838593B (en) | 2018-01-23 |
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