CN106211844A - The prevention and control of a kind of farmland nitrogen and phosphorus pollution and restorative procedure - Google Patents
The prevention and control of a kind of farmland nitrogen and phosphorus pollution and restorative procedure Download PDFInfo
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- CN106211844A CN106211844A CN201610564945.5A CN201610564945A CN106211844A CN 106211844 A CN106211844 A CN 106211844A CN 201610564945 A CN201610564945 A CN 201610564945A CN 106211844 A CN106211844 A CN 106211844A
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- farmland
- nitrogen
- filtering ponds
- phosphorus
- water
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C3/00—Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
Abstract
The invention belongs to field of ecological agricultural, the prevention and control of a kind of farmland nitrogen and phosphorus pollution and restorative procedure, comprise the steps: that a carries out the setting of farmland ditch；B is at sump farmland irrigating device installed above；C farmland fertilization；The supplementary fertilizer that d farmland is follow-up, takes filtering ponds to assemble farmland water, carries out concentration of nitrogen and phosphorus analysis, after then needing to be diluted the farmland water of filtering ponds according to farmland, be sprayed to farmland.It effectively prevents and repairs the situation of farmland nitrogen and phosphorus pollution.
Description
Technical field
The invention belongs to field of ecological agricultural, the prevention and control of a kind of farmland nitrogen and phosphorus pollution and restorative procedure.
Background technology
In China, widespread pollution from the overuse of fertilizers and pesticides in rural area has become the key factor affecting water environment, is becoming China's ecological environment and is disliking
The one of the main reasons changed, seriously governs the sustainable development of agricultural and rural economy environment.And cause widespread pollution from the overuse of fertilizers and pesticides in rural area
Main cause be that chemical fertilizer, a large amount of of pesticide put into and unreasonable use, this causes total nitrogen and the concentration of total phosphorus in agricultural drain
High, the nitrogen phosphorus of a large amount of residuals is entered river, lake by crisscross river network system after rain drop erosion, causes algae
Class eutrophication problem highlights, harmless the biggest.
At present, strive the problems referred to above, had related art scheme, such as Chinese patent CN105002869A " a kind of minimizing
The method of farmland nitrogen discharge and phosphorus discharge ", comprise the steps: that (1) determines agricultural run-off, clearly conflux node；(2) agricultural run-off is entered
Row is collected and preliminary treatment；(3) agricultural run-off is carried out purified treatment；(4) agricultural run-off regulated and stored and purify water；
(5) purify water stably to discharge.A kind of method reducing farmland nitrogen discharge and phosphorus discharge of the present invention, is easy to implement, and running cost is low, and it passes through
To existing farmland ditch, the transformation on the pool and newly-built partial trench, the pool, and prepare the suitable locality with purification function wherein
Water plant, and it is aided with suitable engineering means, it is achieved to widespread pollution from the overuse of fertilizers and pesticides in rural area, the especially nutrient such as nitrogen, phosphorus
Intercept and remove, and be finally reached control widespread pollution from the overuse of fertilizers and pesticides in rural area and improve the purpose of quality of water environment.Also there is Chinese patent
CN102001752A " a kind of with grass as sociales ", builds the relevant cultivation skill of farmland nitrogen phosphorus ecological intercepting irrigation canals and ditches phytobiocoenose
Art and method, belong to the technical field such as widespread pollution from the overuse of fertilizers and pesticides in rural area control and water environment treatment.This method provide grass seeds group to build
In journey, relevant seed is adopted storage, sowing, rich water running, overwinter management and cradles a series of technical measures such as results.Answering of this technology
With can effectively solve existing ecological intercepting irrigation canals and ditches because of the deficient rationally impeded drainage problem in rainy season caused of structure of plant community.These are two years old
Person be agricultural run-off is collected and by planting aquatic plants in the trench carry out purifying water body then will purify after
Water body is discharged.
Also there is the super phosphorus to dry farmland to be fixed, then build irrigation canals and ditches pool wet land system, carry out biological fixation efficient
Denitrogenation dephosphorizing；Again, wetland plant Fertilizer Transformed also field.Such as Chinese patent CN103071671A " a kind of minimizing Dan Linmian source, nonirrigated farmland
The method polluted ", including such as lower part: first, use FGD gypsum, i.e. desulfurized gesso of flue gas, dryland soil excess phosphorus element is entered
Row is fixing, reduces the runoff loss of soluble state phosphorus element, it is achieved farmland in-situ phosphorus element reduces discharging；Secondly, build irrigation canals and ditches pool wet land system,
Carry out biological fixation high-efficient denitrification and dephosphorization；Again, wetland plant Fertilizer Transformed also field, reduce the throwing of chemical fertilizer soluble nitrogen phosphorus
Enter.Described method from occur, run off after, hinder control in terms of three, polluter simultaneously, final realization controls nonirrigated farmland nitrogen and phosphorus pollution
Purpose.Also there is another method to excavate filtering ponds, clear water is focused in the pond on limit, farmland, realize fall by backwash
Low farmland concentration of nitrogen and phosphorus, such as Chinese patent CN 102786110A.
The shortcoming of these methods: one is to be that floor space is big, reduces the usable floor area in farmland, is not that peasant gladly accepts
Mode；Two is that quantities is big, takes time and effort；Three is cannot real-time judgment farmland concentration of nitrogen and phosphorus；Four is to ensure executed nitrogen
The utilization rate of phosphorus.
Summary of the invention
For solving above-mentioned technical problem, the present invention provides prevention and control and the restorative procedure of a kind of farmland nitrogen and phosphorus pollution, and it is effective
Prevention and the situation of reparation farmland nitrogen and phosphorus pollution.
For realizing above-mentioned technical purpose, the concrete technical scheme that the present invention takes is, preventing of a kind of farmland nitrogen and phosphorus pollution
Control and restorative procedure, comprise the steps: that a carries out the setting of farmland ditch, arrange irrigation canals and ditches by agricultural run-off direction, converges at irrigation canals and ditches
The position of stream arranges filtering ponds, and the inwall of filtering ponds uses drainage screen protection, and the bottom of filtering ponds is equipped with the most successively
Ultrafilter membrane supporting network and ultrafilter membrane, the nitrogen phosphorus composition in the water of farmland is filtered by ultrafilter membrane for realization, and filtering ponds are used for gathering
Farmland water after collection ultrafiltration membrance filter；Meanwhile, the center of filtering ponds is provided with sump, and the well head of sump was smaller in size than
The size in filter tank, sump farmland water after collecting ultrafiltration membrance filter；
B draws water source at sump farmland irrigating device installed above, described farmland irrigating device from sump；
C farmland fertilization, before farmland is cultivated, discharges base manure, and the amount of base manure is farmland planting institute's fertilizer requirement altogether
60-80%；Ploughing shallowly after 3-5 days after discharging base manure, shallow plowing number of times is to ensure that base manure farmland of submerging is as the criterion；Fertilizer application condition: farmland
Being dried, and be preferably farm manure without rainwater, base manure in 1-5 days after fertilising, if within 7-10 days, coming without rainwater discharging base manure, then filling
Irrigate device to enable, irrigation rig drawing water for field irrigation from sump；
The supplementary fertilizer that d farmland is follow-up
Take filtering ponds to assemble farmland water, carry out concentration of nitrogen and phosphorus analysis, then need the farmland of filtering ponds according to farmland
After water is diluted, it is sprayed to farmland.
As the technical scheme of the improvement of the present invention, the well head of sump is less than filtering ponds with boss, the height of boss
The degree of depth.
As the technical scheme of the improvement of the present invention, farm manure needs fermentation of becoming thoroughly decomposed before discharging.
As the technical scheme of the improvement of the present invention, the concentration of the farmland water nitrogen phosphorus composition after a test assembled in filtering ponds
Exceeding needed for farmland after the twice of nitrogen phosphorus composition concentration, the farmland water that can extract filtering ponds carries out dry in the sun, obtains solid particulate matter,
Use next time or for supplementing other farmland nitrogen phosphorus compositions after dilution for depositing.
As the technical scheme of the improvement of the present invention, farm manure can be mixed with chemical fertilizer；Farm manure with the weight ratio of chemical fertilizer is
5:1.
It is a further object of the present invention to provide the ripening scheme of farm manure, comprise the steps:
Step one, at the good local excavation aerobic fermentation tank of daylighting；
Step 2, coarse sand and chemical fertilizer carrying out the mixing of the mass ratio of 1:1, obtain mixture A, described coarse sand refers to granule
Size is all higher than the sandstone of 5mm；
Step 3, by mixture A and farm manure 1:(5 in mass ratio 10) uniformly mix after, mixture A and farmers'
Fertile preferably 1:5-6, puts in aerobic fermentation tank and at aerobic fermentation tank opening part covering thin transparent film；
Step 4, standing, after 10-20 days, obtain the farm manure of solid-liquid separation, take out liquid portion in aerobic fermentation tank, by ripening
Discharge in farmland after in pond, liquid portion is diluted；Solid matter in aerobic fermentation tank continues to be placed on aerobic fermentation tank, opens ripening
Hyaline membrane on pond, allows solid matter transpiring moisture in aerobic fermentation tank obtain the solid matter done, is then entered by dry solid matter
Row is directly spread on farmland surface after shaking off the coarse sand in the middle of removing.
As the technical scheme of improvement of the ripening scheme of farm manure, chemical fertilizer is the material including following weight portion, carbonic acid
Ferrum 2-5 part, calcium carbonate 3-10 part and ammonium carbonate 2-10 part.
Beneficial effect
By setting up irrigation canals and ditches and filtering ponds and sump so that the hydrops in farmland can be pooled to by irrigation canals and ditches flowing
In filtering ponds, and complete hydrops filter with filter after the recovery of water body, so facilitate the nitrogen phosphorus composition in farmland can be at water body
Drive under leave farmland again can complete in filtering ponds reclaim, without causing nitrogen phosphorus fertilizer to run off；Water body also can be at collection simultaneously
Assemble under the effect of well, the collection of low concentration of nitrogen and phosphorus water body can be realized, and the water body collected is the most reusable, it is achieved nitrogen
Phosphate fertilizer and the dual recycling of water body of low concentration of nitrogen and phosphorus；Further, the water body in farmland possessed by filtering ponds always, can be by measuring
Nitrogen phosphorus element content in filtering ponds can detect the concentration of nitrogen and phosphorus in farmland, it is achieved the real-time monitoring to farmland concentration of nitrogen and phosphorus；
Difference topmost with prior art is to be not required to prevent nitrogen phosphorus composition by additionally construction ecological pool or the ecological forest
Flowing in surface water, it meets farmland self lock phosphorus lock nitrogen and lock water, gives full play to the utilization rate of nitrogen phosphorus in base manure, it is to avoid repeat
Supplement nitrogen phosphorus fertilizer, reduces the usage amount of outside nitrogen phosphorus fertilizer, it is achieved ecological circulation.
Accompanying drawing explanation
The filtering ponds in Fig. 1 farmland of the present invention and the layout drawing of sump；
In figure 1, drainage screen；2, sump；3, ultrafilter membrane；4, filtering ponds；5, boss.
Detailed description of the invention
Purpose and technical scheme for making the embodiment of the present invention are clearer, attached below in conjunction with the embodiment of the present invention
Figure, is clearly and completely described the technical scheme of the embodiment of the present invention.Obviously, described embodiment is the present invention
A part of embodiment rather than whole embodiments.Based on described embodiments of the invention, those of ordinary skill in the art
The every other embodiment obtained on the premise of without creative work, broadly falls into the scope of protection of the invention.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (include technology art
Language and scientific terminology) have with the those of ordinary skill in art of the present invention be commonly understood by identical meaning.Also should
Being understood by, those terms defined in such as general dictionary should be understood that the meaning having with the context of prior art
The meaning that justice is consistent, and unless defined as here, will not explain by idealization or the most formal implication.
Embodiment 1
The prevention and control of a kind of farmland nitrogen and phosphorus pollution and restorative procedure, comprise the steps:
A carries out the setting of farmland ditch, arranges irrigation canals and ditches by agricultural run-off direction, and the position confluxed at irrigation canals and ditches arranges filtering ponds
4, the inwall of filtering ponds 4 uses drainage screen 1 to protect, the bottom of filtering ponds 4 be equipped with the most successively ultrafilter membrane 3 supporting network with
Ultrafilter membrane 3, the nitrogen phosphorus composition in the water of farmland is filtered by ultrafilter membrane 3 for realization, and filtering ponds 4 are used for assembling ultrafilter membrane 3 mistake
Farmland water after filter；Meanwhile, the center of filtering ponds 4 is provided with sump 2, and the well head of sump 2 is smaller in size than filtering ponds 4
Size, sump 2 is for collecting the farmland water after ultrafilter membrane 3 filters；
In the present embodiment, in order to reduce the filtering ponds 4 pressure when collecting high concentration N-P water to import department's ultrafilter membrane 3
Power, the well head of sump 2 is with boss 5, and the height of boss 5 is less than the degree of depth of filtering ponds 4, so when the farmland water yield is more,
Water body can cover the boss 5 of sump 2, is filtered by the ultrafilter membrane 3 on sump 2 boss 5, and the water body after filtration falls directly into
In sump 2, the water body of high concentration of nitrogen and phosphorus then in filtering ponds 4 periphery of boss 5 collect；When the farmland water yield is less, water
Body is directly pooled to the periphery of boss 5 in filtering ponds 4, does not filters sump 2 mouthfuls.Here the size of filtering ponds 4 is set
2 mouthfuls of sizes of ratio sump of meter are big and 2 mouthfuls of another object being provided with boss 5 of sump are, can constantly possess in filtering ponds 4
The water body assembled from farmland, therefore can judge the nitrogen in farmland by the nitrogen and phosphorus content in water body in detection filtering ponds 4
Phosphorus content.
B draws water source at sump 2 farmland irrigating device installed above, described farmland irrigating device from sump 2；?
Irrigation rig described in the present embodiment uses high-pressure hydraulic pump to draw water from sump 2；
C farmland fertilization, before farmland is cultivated, discharges base manure, and the amount of base manure is farmland planting institute's fertilizer requirement altogether
60-80%；Ploughing shallowly after 3-5 days after discharging base manure, shallow plowing number of times is to ensure that base manure farmland of submerging is as the criterion；Fertilizer application condition: farmland
Being dried, and be preferably farm manure without rainwater, base manure in 1-5 days after fertilising, if within 7-10 days, coming without rainwater discharging base manure, then filling
Irrigate device to enable, irrigation rig drawing water for field irrigation from sump 2；
The supplementary fertilizer that d farmland is follow-up
Take filtering ponds 4 to assemble farmland water, carry out concentration of nitrogen and phosphorus analysis, then need the agriculture of filtering ponds 4 according to farmland
After water in field is diluted, it is sprayed to farmland；The concentration of the farmland water nitrogen phosphorus composition after a test also can assembled in filtering ponds 4 surpasses
Crossing needed for farmland after the twice of nitrogen phosphorus composition concentration, the farmland water that can extract filtering ponds 4 carries out dry in the sun, obtains solid particulate matter,
Gained solid particulate matter can be used for depositing use next time or for supplementing other farmland nitrogen phosphorus compositions after dilution.
In order to improve the stability of fertilizer in farm manure, farm manure can be mixed with chemical fertilizer；Farm manure and the weight ratio of chemical fertilizer
For 5:1.
In order to fully extract the nutrition of farm manure, farm manure needs fermentation of becoming thoroughly decomposed before discharging, the ripening scheme of farm manure,
Comprise the steps: step one, at the good local excavation aerobic fermentation tank of daylighting；Step 2, the quality of 1:1 that coarse sand and chemical fertilizer are carried out
The mixing of ratio, obtains mixture A, and described coarse sand refers to that particle size is all higher than the sandstone of 5mm；Step 3, by mixture A and agriculture
Family fertilizer 1:(5 in mass ratio 10) uniformly mix after, mixture A and farm manure are preferably 1:5-6, put in aerobic fermentation tank also
At aerobic fermentation tank opening part covering thin transparent film；Step 4, standing, after 10-20 days, obtain the farm manure of solid-liquid separation, take out ripening
Liquid portion in pond, discharges in farmland after in aerobic fermentation tank, liquid portion is diluted；Solid matter in aerobic fermentation tank continues
It is placed on aerobic fermentation tank, opens the hyaline membrane on aerobic fermentation tank, allow solid matter transpiring moisture in aerobic fermentation tank obtain the solid matter done, so
After carry out dry solid matter shaking off the coarse sand in the middle of removing after be directly spread on farmland surface.
Wherein, chemical fertilizer is the material including following weight portion, ferric carbonate 2-5 part, calcium carbonate 3-10 part and ammonium carbonate 2-
10 parts.Using main reason is that of this formula, the chemical composition in farm manure is mainly bicarbonate, at digest process
In, bicarbonate can resolve into water and carbonate, and this process is reversible, can suppress after increasing carbonate chemical fertilizer
The forward process of this reversible reaction, and then retain the fertilizer of farm manure.
During different embodiments, chemical fertilizer can use the material of following weight portion:
Example 1, ferric carbonate 2 parts, calcium carbonate 10 parts and ammonium carbonate 2 parts；
Example 2, ferric carbonate 5 parts, calcium carbonate 3 parts and ammonium carbonate 10 parts；
Example 3, ferric carbonate 3 parts, calcium carbonate 5 parts and ammonium carbonate 6 parts；
Example 4, ferric carbonate 4 parts, calcium carbonate 7 parts and ammonium carbonate 4 parts.
Implementation result
Use two pieces of farmlands with homalographic of same region same nitrogen and phosphorus pollution degree, respectively farmland A and farmland B,
The prevention and control that farmland A implements the present embodiment 1 with restorative procedure and were planted simultaneously, directly plant farmland B, in 1 year
1.5 times of the farmland B yield of interior farmland A yield；The amount of nitrogen phosphorus fertilizer used by the A of farmland is used by the A of farmland the 1/3 of the amount of nitrogen phosphorus fertilizer,
After having planted in 1 year, farmland A residual nitrogen phosphorus concentration is the 1/4 of farmland B residual nitrogen phosphorus concentration.
These are only embodiments of the present invention, it describes more concrete and in detail, but can not therefore and be interpreted as right
The restriction of the scope of the claims of the present invention.It should be pointed out that, for the person of ordinary skill of the art, without departing from the present invention
On the premise of design, it is also possible to make some deformation and improvement, these belong to protection scope of the present invention.
Claims (7)
1. the prevention and control of a farmland nitrogen and phosphorus pollution and restorative procedure, it is characterised in that: comprise the steps: that a carries out farmland ditch
Setting, irrigation canals and ditches are set by agricultural run-off direction, filtering ponds are set in the position that irrigation canals and ditches conflux, the inwall of filtering ponds uses and filters
Net protection, the bottom of filtering ponds is equipped with ultrafilter membrane supporting network and ultrafilter membrane the most successively, and ultrafilter membrane is for realizing agriculture
Nitrogen phosphorus composition in water in field filters, filtering ponds farmland water after assembling ultrafiltration membrance filter；Meanwhile, the center of filtering ponds
Position is provided with sump, and the well head of sump is smaller in size than the size of filtering ponds, and sump is after collecting ultrafiltration membrance filter
Farmland water；
B draws water source at sump farmland irrigating device installed above, described farmland irrigating device from sump；
C farmland fertilization, before farmland is cultivated, discharges base manure, and the amount of base manure is the 60-of farmland planting institute's fertilizer requirement altogether
80%；Ploughing shallowly after 3-5 days after discharging base manure, shallow plowing number of times is to ensure that base manure farmland of submerging is as the criterion；Fertilizer application condition: farmland is done
Dry, and it is preferably farm manure without rainwater, base manure in 1-5 days after fertilising, if within 7-10 days, coming without rainwater discharging base manure, then irrigate
Device enables, irrigation rig drawing water for field irrigation from sump；
The supplementary fertilizer that d farmland is follow-up
Take filtering ponds to assemble farmland water, carry out concentration of nitrogen and phosphorus analysis, then need to enter the farmland water of filtering ponds according to farmland
After row dilution, it is sprayed to farmland.
The prevention and control of a kind of farmland the most according to claim 1 nitrogen and phosphorus pollution and restorative procedure, it is characterised in that: sump
Well head is with boss, and the height of boss is less than the degree of depth of filtering ponds.
The prevention and control of a kind of farmland the most according to claim 1 nitrogen and phosphorus pollution and restorative procedure, it is characterised in that: farm manure exists
Fermentation of becoming thoroughly decomposed is needed before discharging.
The prevention and control of a kind of farmland the most according to claim 1 nitrogen and phosphorus pollution and restorative procedure, it is characterised in that: in filtering ponds
The concentration of farmland water nitrogen phosphorus composition after a test assembled exceedes needed for farmland after the twice of nitrogen phosphorus composition concentration, can extract filtration
The farmland water in pond carries out dry in the sun, obtains solid particulate matter, is used for depositing use next time or for supplementing other after dilution
Farmland nitrogen phosphorus composition.
The prevention and control of a kind of farmland the most according to claim 1 nitrogen and phosphorus pollution and restorative procedure, it is characterised in that: in farm manure
Chemical fertilizer can be mixed with；Farm manure is 5:1 with the weight ratio of chemical fertilizer.
6. according to prevention and control and the restorative procedure of a kind of farmland nitrogen and phosphorus pollution described in claim 1 or 3, it is characterised in that farmers'
Fertilizer is to use following steps to carry out ripening:
Step one, at the good local excavation aerobic fermentation tank of daylighting；
Step 2, coarse sand and chemical fertilizer carrying out the mixing of the mass ratio of 1:1, obtain mixture A, described coarse sand refers to particle size
It is all higher than the sandstone of 5mm；
Step 3, by mixture A and farm manure 1:(5 in mass ratio 10) uniformly mix after, mixture A is excellent with farm manure
Elect 1:5-6 as, put in aerobic fermentation tank and at aerobic fermentation tank opening part covering thin transparent film；
Step 4, standing, after 10-20 days, obtain the farm manure of solid-liquid separation, take out liquid portion in aerobic fermentation tank, by aerobic fermentation tank
Liquid portion discharges in farmland after being diluted；Solid matter in aerobic fermentation tank continues to be placed on aerobic fermentation tank, opens on aerobic fermentation tank
Hyaline membrane, allow solid matter transpiring moisture in aerobic fermentation tank obtain the solid matter done, then dry solid matter trembled
Fall and be directly spread on farmland surface after removing middle coarse sand.
The maturation stage of farm manure the most according to claim 6, it is characterised in that chemical fertilizer is the thing including following weight portion
Matter, ferric carbonate 2-5 part, calcium carbonate 3-10 part and ammonium carbonate 2-10 part.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610564945.5A CN106211844B (en) | 2016-07-19 | 2016-07-19 | A kind of prevention and control of farmland nitrogen and phosphorus pollution and restorative procedure |
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| CN201610564945.5A CN106211844B (en) | 2016-07-19 | 2016-07-19 | A kind of prevention and control of farmland nitrogen and phosphorus pollution and restorative procedure |
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| CN106211844B CN106211844B (en) | 2018-08-03 |
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| CN102535624A (en) * | 2011-11-18 | 2012-07-04 | 江苏大学 | Sewage concentration drainage device |
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| CN104386882A (en) * | 2014-11-26 | 2015-03-04 | 武汉市润之达石化设备有限公司 | Biological ultrafiltration membrane sewage treatment device |
| CN104594446A (en) * | 2015-01-22 | 2015-05-06 | 浙江大学 | Initial runoff collection, purification and recycling system and initial runoff collection, purification and recycling method thereof |
| CN105002869A (en) * | 2015-07-08 | 2015-10-28 | 江苏田娘农业科技有限公司 | Method of reducing farmland nitrogen and phosphorus emissions |
-
2016
- 2016-07-19 CN CN201610564945.5A patent/CN106211844B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535624A (en) * | 2011-11-18 | 2012-07-04 | 江苏大学 | Sewage concentration drainage device |
| US20140224717A1 (en) * | 2013-02-12 | 2014-08-14 | Graham John Gibson Juby | Wastewater treatment system with microbial fuel cell power |
| CN203568939U (en) * | 2013-09-27 | 2014-04-30 | 南京宏博环保实业有限公司 | Agricultural non-point source pollution control system |
| CN103803760A (en) * | 2014-01-26 | 2014-05-21 | 河海大学 | Wet land purification system with serially-connected rice field drainage ditches in irrigated area |
| CN104386882A (en) * | 2014-11-26 | 2015-03-04 | 武汉市润之达石化设备有限公司 | Biological ultrafiltration membrane sewage treatment device |
| CN104594446A (en) * | 2015-01-22 | 2015-05-06 | 浙江大学 | Initial runoff collection, purification and recycling system and initial runoff collection, purification and recycling method thereof |
| CN105002869A (en) * | 2015-07-08 | 2015-10-28 | 江苏田娘农业科技有限公司 | Method of reducing farmland nitrogen and phosphorus emissions |
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| CN106211844B (en) | 2018-08-03 |
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