CN104672035A - Ecological nitrogenous fertilizer and preparation method thereof - Google Patents
Ecological nitrogenous fertilizer and preparation method thereof Download PDFInfo
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- CN104672035A CN104672035A CN201510034637.7A CN201510034637A CN104672035A CN 104672035 A CN104672035 A CN 104672035A CN 201510034637 A CN201510034637 A CN 201510034637A CN 104672035 A CN104672035 A CN 104672035A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
Abstract
The invention belongs to the field of crop fertilizers, and particularly relates to an ecological nitrogenous fertilizer and a preparation method thereof. The ecological nitrogenous fertilizer comprises the following main components: sludge, a nitrogenous fertilizer, organic titanium, microelements, a functional additive and a surfactant. The method comprises the following steps: firstly, carrying out deodorization and sterilization and heavy metal removal on sludge, and combining with a nitrogen fertilizer in the presence of a surfactant; and adding the organic titanium and the functional additive, and fully mixing and drying to obtain the ecological nitrogenous fertilizer. With sludge from urban sewage treatment as an organic matter, the ecological nitrogenous fertilizer is abundant and comprehensive in nutrient; the utilization rate of the nitrogen fertilizer can be improved by combining with the nitrogen fertilizer; the organic matter in the soil is increased; the microbial activity of the soil is promoted; the stress-resistance and the disease-resistant capabilities of the crop are enhanced; the soil structure and fertility are improved; the crop growth is promoted; meanwhile, the pollution to the environment caused by the sludge can be reduced; and the sludge is reused and returned into the nature, and is safe to human, livestock and environment, is nontoxic, and is an environment-friendly ecological fertilizer.
Description
Technical field
The invention belongs to the fertilizer field of farm crop, more precisely relate to a kind of ecological nitrogen fertilizer and preparation method thereof.
Background technology
Ecological fertilizer is a kind of environmental friendly fertilizer, and it contains a large amount of organic matters, can promote the activity of Soil Microorganism in being manured into soil, strengthen the degeneration-resistant resistance against diseases of crop, reduce continuous cropping, use year after year and greatly can alleviate continuous cropping obstacle, promote quality of agricultural product; Also can improve Soil structure, increase the porosity of soil, improve the permeability of soil, keep soil from packing together, strengthen the breathing of Soil Microorganism and crop root, promote plant growth, increase soil fertility; Water loss and evaporation can be reduced simultaneously, alleviate arid pressure, fertilizer conservation, minimizing chemical fertilizer, alleviate saline and alkaline infringement, reach while nutrition is provided, improve the effect of soil.
In recent years, under the policy promotion that national energy-saving reduces discharging, urban sewage environmental control obtains prominent achievement, but a large amount of mud after sewage disposal are not also effectively addressed, and easily cause secondary pollution to underground water and soil, harm public health.The nitrogen needed containing crop in mud and potassium element, can be crop and provide nutritive element, simultaneously also containing a large amount of organic matters and beneficial microorganism bacterium, applies the organic carbon that can to increase in soil in soil, promote the breeding of soil microorganisms, improve soil fertility.But equally containing a large amount of parasitic ovum, various harmful bacterial classification and heavy metal in mud, apply in farmland, not only can damage edatope if do not processed as fertilizer, also can grow by damage to crops, harm humans is healthy.
Nitrogenous fertilizer is one of large nutritive element of three needed for crop, and the growth of crop is played a very important role, but nitrogenous fertilizer easily runs off or volatilizees, utilization ratio is low, at present in order to improve the utilization ratio of nitrogenous fertilizer, there is the slow-release nitrogen fertilizer of various form, as coated urea or the contour molecule nitrogenous fertilizer of poly(urea formaldehyde).Improve soil and ecotope, also occur some novel ecological nitrogenous fertilizer using mud as fertilizer at present.Chinese invention patent publication number CN 103553816A discloses one and utilizes organic fermentative production slow release fertilizer and preparation method thereof, microbial bacteria is now utilized to ferment to mud, pig manure etc., add molasses, wheat bran, N P and K mixture, calcium magnesium sulphur zinc-iron trace element fertilizer and wilkinite again carry out mixing and stir, granulating and drying and get final product, does not effectively process the objectionable impurities in mud in this technology.Chinese invention patent publication number CN 103864494A discloses a kind of method utilizing stalk and mud to produce efficient composite organic fertilizer, be by be soaked in after crushed stalk mix with mud again after ammonification in ammoniacal liquor in heaps, adding microbiobacterial agent carries out becoming thoroughly decomposed after fermentation, then is mixed and made into efficient composite organic fertilizer with phosphate fertilizer and potash fertilizer.Chinese invention patent publication number CN 1982261 discloses a kind of durable composite fertilizer, the mud produced with city domestic sewage treatment plant or industrial effluent treatment plant also adds zeolite for main component, after mixing, stirring, appropriate urea or carbon ammonium is allocated into again after anaerobism, drying, sterilization and disinfection, the long-acting compound organic fertilizer made after balling-up, in this technology, sterilization and disinfection is carried out to mud, certain parasitic ovum can have been removed.
The fertilizer using mud as fertilizer carrier described in above patent, major part is directly mixing, does not process mud, has potential harm to the growth of crop and the health of the mankind; Be not combined with inorganic fertilizer by the organic matter in mud, the chemical fertilizer especially same easily leaching of nitrogenous fertilizer or volatilization runs off, and reduces the utilization ratio of nitrogenous fertilizer simultaneously.
Summary of the invention
In order to solve the above problems, the present invention proposes a kind of ecological nitrogen fertilizer.This ecological nitrogen fertilizer mud is as ecological organic carrier, and nutritive element, based on nitrogenous fertilizer, adds organic titanium, tensio-active agent and functional additive simultaneously, organic and inorganic nitrogenous fertilizer can be combined, prevent the loss of nitrogenous fertilizer, improve utilization rate of nitrogen fertilizer; Can improve crop root and microbic activity, promote the absorption to nutrient, each nutritive element in balanced soil, improves hardening of soil simultaneously, promotes the fertility of soil.
The present invention further provides a kind of preparation method of ecological nitrogen fertilizer, the method be by city domestic sewage process after mud first utilize high temperature to carry out sterilization and parasiticide ovum, carry out deodorizing simultaneously, remove the heavy metal ion in sewage again, slough moisture, add nitrogenous fertilizer, under the existence of tensio-active agent, nitrogenous fertilizer and mud combine, add organic titanium again and functional additive fully mixes, drying can obtain ecological nitrogen fertilizer of the present invention.
A kind of ecological nitrogen fertilizer of the present invention, is characterized in that: adopt the mud after processing to provide organic in this ecological nitrogen fertilizer, add organic titanium, its constitutive material is following weight part simultaneously:
Mud: 30 ~ 40 parts,
Nitrogenous fertilizer: 30 ~ 40 parts,
Organic titanium: 2 ~ 10 parts,
Functional additive: 20 ~ 30 parts,
Tensio-active agent: 0.2 ~ 0.5 part.
Mud described above is the active sludge of city domestic sewage treatment plant.Containing n-p-k element and organic matter in this mud, simultaneously also containing parasitic ovum and a small amount of heavy metal ion.
Nitrogenous fertilizer described above can be urea, ammonium salt, nitrate and their arbitrary composition.
Organic titanium described above is humic acid chelating organic titanium.
Tensio-active agent described above be in following material any one: N-formyl alkyl imino Synthetic rubber, isoprene-styrene, hydrogenated, block, diblock, Polyoxyethylene Methyl acryate-propylene cyanogen graft copolymer, N-formyl alkyl imino Synthetic rubber, isoprene-styrene, hydrogenated, block, diblock and Polyoxyethylene Methyl acryate-propylene cyanogen graft copolymer are amphipathic comb copolymer, containing amino on its molecular chain, carboxyl and hydroxyl, can with the amide nitrogen in nitrogenous fertilizer and ammonia radical ion generation Chemical bond, stablize nitrogenous fertilizer, also can reduce the surface tension of mud simultaneously, adsorb with nitrogenous fertilizer, prevent loss of nitrogenous fertilizer, improve the utilization ratio of nitrogenous fertilizer.
Functional additive described above is the composition of following several material: zeolite, Wingdale, kaolin, starch, stalk.Its ratio is zeolite: Wingdale: kaolin: starch: stalk=2 ~ 4:1 ~ 5:1 ~ 3:1 ~ 2:5 ~ 10, and its granularity of wherein said zeolite is 50 ~ 80 orders, and described stalk granularity is 3 ~ 7cm.
A kind of ecological nitrogen fertilizer of the present invention, is characterized in that: its preparation method has following steps:
(1) active sludge is added in leaching filling, adds the clear water of 5 ~ 10 of active sludge weight, after adopting mechanical stirring mode to stir 1 ~ 2h, filter, obtain the liquid containing heavy metal and water-containing sludge;
(2) be added in another leaching filling to the heavy metal liquid in step (1), add the medical stone Adsorption of Heavy Metals of 5% ~ 10% of heavy metal liquid volume, setting mechanical stirring rotating speed is 50r/min ~ 80r/min, and temperature is set to 40 ~ 60 DEG C, stop stirring after stirring 2 ~ 4h, filter to obtain liquid;
(3) liquid mixing in the water-containing sludge in step (1) and step (2) is added in airtight stirred reactor, hybrid reaction, setting stir speed (S.S.) is 20r/min ~ 50r/min, with this understanding, stop irradiating after utilizing plasma body to carry out irradiation 2 ~ 5min to it, setting temperature of reaction kettle is 130 ~ 160 DEG C, and pressure is set to 0.1Mpa ~ 0.3Mpa, reacts 3 ~ 5h with this understanding;
(4) by another open type stirred autoclave of reacted substance transfer in step (3), design temperature is 40 ~ 60 DEG C, add nitrogenous fertilizer and tensio-active agent, keep reaction 2 ~ 3h under the rotating speed of 50r/min ~ 80r/min after, dehydrate to moisture be within 10% ~ 15%;
(5) organic titanium and functional additive are added in the open type stirred autoclave in step (4), after being fully uniformly mixed, drying a kind of ecological nitrogen fertilizer.
Remove by clear water heavy metal in above-mentioned steps (1), the present invention's mud used is the active sludge after process city domestic sewage, therefore heavy metal content is relatively low, in clear water, utilize mechanical stirring mud fully can be separated with heavy metal ion, heavy metal ion is made to be free in water from the parcel of mud, carry out solid-liquid separation again, the liquid containing heavy metal ion can be obtained.
In above-mentioned steps (2), medical stone is natural mineral, and heavy metal has very strong absorption, Adsorption of Heavy Metal Ions at the temperature of 40 ~ 60 DEG C, greatly can reduce the content of heavy metal in heavy metal liquid, to reach the object of removing heavy metal.
In above-mentioned steps (3), liquid in step (2) is mixed with mud, because of in stirring extraction in step (1), dissolved organic matter in mud and beneficial microorganism bacterium can be dissolved in water, be filtered together with heavy metal ion, the nutritive substance that therefore residual major part can be water-soluble in heavy metal liquid.The plasma reactor wherein used in plasma irradiating used, its power input is 1000W ~ 5000W, and frequency is 10 ~ 20KHZ, and irradiation temperature is 25 DEG C ~ 35 DEG C, and input bleed pressure is 0.008MPa ~ 0.020MPa.This plasma body is gases used selects nitrogen, and the unbound electron in nitrogen is accelerated, and obtains high-energy, can make sludge cell wall breakage, transmit each matter energy, improves internal motion speed, promotes organic decomposition, promotes anaerobic digestion reaction.
In above-mentioned steps (3), plasma body also can make partial organic substances be decomposed into small organic molecule rapidly while abolishing mud cell walls, provide the microbial nutrition of the part in mud, promote that it is bred.Under the condition of High Temperature High Pressure, can kill parasitic ovum and microorganism, high temperature resistant bacterium is under the condition of high temperature simultaneously, can accelerate decomposition organic in mud, promotes the slaking of mud.
A kind of ecological nitrogen fertilizer of the present invention and preparation method thereof, utilize the main carriers of active sludge as nitrogenous fertilizer of city domestic sewage treatment plant, tensio-active agent is utilized to be combined with the mode of active sludge by chemical bond energy by nitrogenous fertilizer, the leaching of nitrogenous fertilizer and volatilization can be prevented to run off, improve the utilization ratio of nitrogenous fertilizer.Contain N P and K, trace element, various beneficial microorganism bacterium and a large amount of organic matters in mud simultaneously, nutritive substance can also be provided for Soil Microorganism while crop alimentary material is provided, promote the activity of soil microorganisms, improve the permeability of soil, promote the fertility of soil.The organic titanium added can improve the activity of fertilizer and crop root equally, promotes that crop root is to the absorption of fertilizer, makes crop yield.The functional additive added can improve soil, the nutritive element in balanced soil, keeps the moisture content in soil, prevents arid.
A kind of ecological nitrogen fertilizer of the present invention and preparation method thereof, its outstanding feature and beneficial effect are:
1, utilize the active sludge of city domestic sewage treatment plant as organic matter, first heavy metal and parasitic ovum removal are carried out to it, organism in activated sludge and microorganism, under the existence of tensio-active agent, the combination of chemical bond energy is carried out again with nitrogenous fertilizer, loss of nitrogenous fertilizer can be prevented, improve utilization rate of nitrogen fertilizer, reach the object of nitrogen fertilizer slow-releasing.Solve the secondary pollution problem that mud causes environment, prevent mud to the pollution of underground water and environment, ensure the security of fertilizer, decrease the harm to crop and human body health.
2, N P and K, trace element, various beneficial microorganism bacterium and a large amount of organic matters is contained in mud, the amount of application of n p k fertilizer can be reduced, nutritive substance can also be provided for Soil Microorganism while crop alimentary material is provided, promotes the activity of soil microorganisms, improve the permeability of soil, improve soil compaction situation, increase the crumb structure of soil, strengthen the degeneration-resistant disease resistance of crop, promote the quality of crop, increase organic carbon content in soil, promote soil fertility.
3, the organic titanium added and functional additive, can not only improve the activity of fertilizer and crop root, promotes that crop root is to the absorption of fertilizer, make crop yield, can also soil be improved, the nutritive element in balanced soil, keep the moisture content in soil, prevent arid, reach the object of water conservation.
4, its biodegradability of material that the present invention adopts is good, can not to environment, and life-time service can environmental protect pollution situation.
Embodiment
Below by way of embodiment, the present invention is described in further detail, but should not be construed as scope authority of the present invention and be only limitted to following example.
embodiment 1
A kind of ecological nitrogen fertilizer, its each material consists of following weight part:
30 parts, mud, 30 parts, nitrogenous fertilizer, organic titanium 10 parts, functional additive 30 parts, 0.2 part, tensio-active agent.
Wherein nitrogenous fertilizer is urea, and functional additive respectively forms and ratio is zeolite: Wingdale: kaolin: starch: stalk=2:2:1:2:6.
N-formyl alkyl imino Synthetic rubber, isoprene-styrene, hydrogenated, block, diblock elected as by tensio-active agent wherein.
The preparation method of ecological nitrogen fertilizer, comprises the following steps:
(1) active sludge is added in leaching filling, adds the clear water of 5 ~ 10 of active sludge weight, after adopting mechanical stirring mode to stir 1 ~ 2h, filter, obtain the liquid containing heavy metal and water-containing sludge;
(2) be added in another leaching filling to the heavy metal liquid in step (1), add the medical stone Adsorption of Heavy Metals of 5% ~ 10% of heavy metal liquid volume, setting mechanical stirring rotating speed is 50r/min ~ 80r/min, and temperature is set to 40 ~ 60 DEG C, stop stirring after stirring 2 ~ 4h, filter to obtain liquid;
(3) liquid mixing in the water-containing sludge in step (1) and step (2) is added in airtight stirred reactor, hybrid reaction, setting stir speed (S.S.) is 20r/min ~ 50r/min, with this understanding, stop irradiating after utilizing plasma body to carry out irradiation 2 ~ 5min to it, setting temperature of reaction kettle is 130 ~ 160 DEG C, and pressure is set to 0.1Mpa ~ 0.3Mpa, reacts 3 ~ 5h with this understanding;
(4) by another open type stirred autoclave of reacted substance transfer in step (3), design temperature is 40 ~ 60 DEG C, add nitrogenous fertilizer and tensio-active agent, keep reaction 2 ~ 3h under the rotating speed of 50r/min ~ 80r/min after, dehydrate to moisture be within 10% ~ 15%;
(5) organic titanium and functional additive are added in the open type stirred autoclave in step (4), after being fully uniformly mixed, drying a kind of ecological nitrogen fertilizer.
Its plasma gas of plasma reactor used is nitrogen, and its power input is 1000W ~ 5000W, and frequency is 10 ~ 20KHZ, and irradiation temperature is 25 DEG C ~ 35 DEG C, and input bleed pressure is 0.008MPa ~ 0.020MPa.
embodiment 2
A kind of ecological nitrogen fertilizer, its each material consists of following weight part:
35 parts, mud, 35 parts, nitrogenous fertilizer, organic titanium 5 parts, functional additive 25 parts, 0.3 part, tensio-active agent.
Wherein nitrogenous fertilizer is ammonium phosphate, and functional additive respectively forms and ratio is zeolite: Wingdale: kaolin: starch: stalk=1:1:2:1:8
N-formyl alkyl imino Synthetic rubber, isoprene-styrene, hydrogenated, block, diblock elected as by tensio-active agent wherein.
The preparation method of ecological nitrogen fertilizer, comprises the following steps:
(1) active sludge is added in leaching filling, adds the clear water of 5 ~ 10 of active sludge weight, after adopting mechanical stirring mode to stir 1 ~ 2h, filter, obtain the liquid containing heavy metal and water-containing sludge;
(2) be added in another leaching filling to the heavy metal liquid in step (1), add the medical stone Adsorption of Heavy Metals of 5% ~ 10% of heavy metal liquid volume, setting mechanical stirring rotating speed is 50r/min ~ 80r/min, and temperature is set to 40 ~ 60 DEG C, stop stirring after stirring 2 ~ 4h, filter to obtain liquid;
(3) liquid mixing in the water-containing sludge in step (1) and step (2) is added in airtight stirred reactor, hybrid reaction, setting stir speed (S.S.) is 20r/min ~ 50r/min, with this understanding, stop irradiating after utilizing plasma body to carry out irradiation 2 ~ 5min to it, setting temperature of reaction kettle is 130 ~ 160 DEG C, and pressure is set to 0.1Mpa ~ 0.3Mpa, reacts 3 ~ 5h with this understanding;
(4) by another open type stirred autoclave of reacted substance transfer in step (3), design temperature is 40 ~ 60 DEG C, add nitrogenous fertilizer and tensio-active agent, keep reaction 2 ~ 3h under the rotating speed of 50r/min ~ 80r/min after, dehydrate to moisture be within 10% ~ 15%;
(5) organic titanium and functional additive are added in the open type stirred autoclave in step (4), after being fully uniformly mixed, drying a kind of ecological nitrogen fertilizer.
Its plasma gas of plasma reactor used is nitrogen, and its power input is 1000W ~ 5000W, and frequency is 10 ~ 20KHZ, and irradiation temperature is 25 DEG C ~ 35 DEG C, and input bleed pressure is 0.008MPa ~ 0.020MPa.
embodiment 3
A kind of ecological nitrogen fertilizer, its each material consists of following weight part:
40 parts, mud, 38 parts, nitrogenous fertilizer, organic titanium 2 parts, functional additive 20 parts, 0.5 part, tensio-active agent.
Wherein nitrogenous fertilizer is saltpetre, and functional additive respectively forms and ratio is zeolite: Wingdale: kaolin: starch: stalk=3:4:3:1:5.
Polyoxyethylene Methyl acryate-propylene cyanogen graft copolymer elected as by tensio-active agent wherein.
The preparation method of ecological nitrogen fertilizer, comprises the following steps:
(1) active sludge is added in leaching filling, adds the clear water of 5 ~ 10 of active sludge weight, after adopting mechanical stirring mode to stir 1 ~ 2h, filter, obtain the liquid containing heavy metal and water-containing sludge;
(2) be added in another leaching filling to the heavy metal liquid in step (1), add the medical stone Adsorption of Heavy Metals of 5% ~ 10% of heavy metal liquid volume, setting mechanical stirring rotating speed is 50r/min ~ 80r/min, and temperature is set to 40 ~ 60 DEG C, stop stirring after stirring 2 ~ 4h, filter to obtain liquid;
(3) liquid mixing in the water-containing sludge in step (1) and step (2) is added in airtight stirred reactor, hybrid reaction, setting stir speed (S.S.) is 20r/min ~ 50r/min, with this understanding, stop irradiating after utilizing plasma body to carry out irradiation 2 ~ 5min to it, setting temperature of reaction kettle is 130 ~ 160 DEG C, and pressure is set to 0.1Mpa ~ 0.3Mpa, reacts 3 ~ 5h with this understanding;
(4) by another open type stirred autoclave of reacted substance transfer in step (3), design temperature is 40 ~ 60 DEG C, add nitrogenous fertilizer and tensio-active agent, keep reaction 2 ~ 3h under the rotating speed of 50r/min ~ 80r/min after, dehydrate to moisture be within 10% ~ 15%;
(5) organic titanium and functional additive are added in the open type stirred autoclave in step (4), after being fully uniformly mixed, drying a kind of ecological nitrogen fertilizer.
Its plasma gas of plasma reactor used is nitrogen, and its power input is 1000W ~ 5000W, and frequency is 10 ~ 20KHZ, and irradiation temperature is 25 DEG C ~ 35 DEG C, and input bleed pressure is 0.008MPa ~ 0.020MPa.
embodiment 4
A kind of ecological nitrogen fertilizer, its each material consists of following weight part:
35 parts, mud, 40 parts, nitrogenous fertilizer, organic titanium 5 parts, functional additive 20 parts, 0.45 part, tensio-active agent.
Wherein nitrogenous fertilizer is ammonium nitrate, and functional additive respectively forms and ratio is zeolite: Wingdale: kaolin: starch: stalk=4:5:2:2:10.
N-formyl alkyl imino Synthetic rubber, isoprene-styrene, hydrogenated, block, diblock elected as by tensio-active agent wherein.
The preparation method of ecological nitrogen fertilizer, comprises the following steps:
(1) active sludge is added in leaching filling, adds the clear water of 5 ~ 10 of active sludge weight, after adopting mechanical stirring mode to stir 1 ~ 2h, filter, obtain the liquid containing heavy metal and water-containing sludge;
(2) be added in another leaching filling to the heavy metal liquid in step (1), add the medical stone Adsorption of Heavy Metals of 5% ~ 10% of heavy metal liquid volume, setting mechanical stirring rotating speed is 50r/min ~ 80r/min, and temperature is set to 40 ~ 60 DEG C, stop stirring after stirring 2 ~ 4h, filter to obtain liquid;
(3) liquid mixing in the water-containing sludge in step (1) and step (2) is added in airtight stirred reactor, hybrid reaction, setting stir speed (S.S.) is 20r/min ~ 50r/min, with this understanding, stop irradiating after utilizing plasma body to carry out irradiation 2 ~ 5min to it, setting temperature of reaction kettle is 130 ~ 160 DEG C, and pressure is set to 0.1Mpa ~ 0.3Mpa, reacts 3 ~ 5h with this understanding;
(4) by another open type stirred autoclave of reacted substance transfer in step (3), design temperature is 40 ~ 60 DEG C, add nitrogenous fertilizer and tensio-active agent, keep reaction 2 ~ 3h under the rotating speed of 50r/min ~ 80r/min after, dehydrate to moisture be within 10% ~ 15%;
(5) organic titanium and functional additive are added in the open type stirred autoclave in step (4), after being fully uniformly mixed, drying a kind of ecological nitrogen fertilizer.
Its plasma gas of plasma reactor used is nitrogen, and its power input is 1000W ~ 5000W, and frequency is 10 ~ 20KHZ, and irradiation temperature is 25 DEG C ~ 35 DEG C, and input bleed pressure is 0.008MPa ~ 0.020MPa.
embodiment 5
A kind of ecological nitrogen fertilizer, its each material consists of following weight part:
40 parts, mud, 30 parts, nitrogenous fertilizer, organic titanium 8 parts, functional additive 22 parts, 0.4 part, tensio-active agent.
Wherein nitrogenous fertilizer is urea, and functional additive respectively forms and ratio is zeolite: Wingdale: kaolin: starch: stalk=2:3:3:2:10.
Polyoxyethylene Methyl acryate-propylene cyanogen graft copolymer elected as by tensio-active agent wherein.
The preparation method of ecological nitrogen fertilizer, comprises the following steps:
(1) active sludge is added in leaching filling, adds the clear water of 5 ~ 10 of active sludge weight, after adopting mechanical stirring mode to stir 1 ~ 2h, filter, obtain the liquid containing heavy metal and water-containing sludge;
(2) be added in another leaching filling to the heavy metal liquid in step (1), add the medical stone Adsorption of Heavy Metals of 5% ~ 10% of heavy metal liquid volume, setting mechanical stirring rotating speed is 50r/min ~ 80r/min, and temperature is set to 40 ~ 60 DEG C, stop stirring after stirring 2 ~ 4h, filter to obtain liquid;
(3) liquid mixing in the water-containing sludge in step (1) and step (2) is added in airtight stirred reactor, hybrid reaction, setting stir speed (S.S.) is 20r/min ~ 50r/min, with this understanding, stop irradiating after utilizing plasma body to carry out irradiation 2 ~ 5min to it, setting temperature of reaction kettle is 130 ~ 160 DEG C, and pressure is set to 0.1Mpa ~ 0.3Mpa, reacts 3 ~ 5h with this understanding;
(4) by another open type stirred autoclave of reacted substance transfer in step (3), design temperature is 40 ~ 60 DEG C, add nitrogenous fertilizer and tensio-active agent, keep reaction 2 ~ 3h under the rotating speed of 50r/min ~ 80r/min after, dehydrate to moisture be within 10% ~ 15%;
(5) organic titanium and functional additive are added in the open type stirred autoclave in step (4), after being fully uniformly mixed, drying a kind of ecological nitrogen fertilizer.
Its plasma gas of plasma reactor used is nitrogen, and its power input is 1000W ~ 5000W, and frequency is 10 ~ 20KHZ, and irradiation temperature is 25 DEG C ~ 35 DEG C, and input bleed pressure is 0.008MPa ~ 0.020MPa.
Claims (3)
1. ecological nitrogen fertilizer and preparation method thereof, is characterized in that: adopt the active sludge after processing to provide organic in this ecological nitrogen fertilizer, add organic titanium, its constitutive material is following weight part simultaneously:
Mud: 30 ~ 40 parts,
Nitrogenous fertilizer: 30 ~ 40 parts,
Organic titanium: 2 ~ 10 parts,
Functional additive: 20 ~ 30 parts,
Tensio-active agent: 0.2 ~ 0.5 part;
This ecological nitrogen fertilizer be obtained by following steps:
(1) active sludge is added in leaching filling, adds the clear water of 5 ~ 10 of active sludge weight, after adopting mechanical stirring mode to stir 1 ~ 2h, filter, obtain the liquid containing heavy metal and water-containing sludge;
(2) be added in another leaching filling to the heavy metal liquid in step (1), add the medical stone Adsorption of Heavy Metals of 5% ~ 10% of heavy metal liquid volume, setting mechanical stirring rotating speed is 50r/min ~ 80r/min, and temperature is set to 40 ~ 60 DEG C, stop stirring after stirring 2 ~ 4h, filter to obtain liquid;
(3) liquid mixing in the water-containing sludge in step (1) and step (2) is added in airtight stirred reactor, hybrid reaction, setting stir speed (S.S.) is 20r/min ~ 50r/min, with this understanding, stop irradiating after utilizing plasma body to carry out irradiation 2 ~ 5min to it, setting temperature of reaction kettle is 130 ~ 160 DEG C, and pressure is set to 0.1Mpa ~ 0.3Mpa, reacts 3 ~ 5h with this understanding;
(4) by another open type stirred autoclave of reacted substance transfer in step (3), design temperature is 40 ~ 60 DEG C, add nitrogenous fertilizer and tensio-active agent, keep reaction 2 ~ 3h under the rotating speed of 50r/min ~ 80r/min after, dehydrate to moisture be within 10% ~ 15%;
(5) organic titanium and functional additive are added in the open type stirred autoclave in step (4), after being fully uniformly mixed, drying a kind of ecological nitrogen fertilizer.
2. a kind of ecological nitrogen fertilizer according to claim 1 and preparation method thereof, is characterized in that: wherein said mud is the active sludge of city domestic sewage treatment plant; Described nitrogenous fertilizer can be urea, ammonium salt, nitrate and their arbitrary composition; Described organic titanium is humic acid chelating organic titanium; Described tensio-active agent be in following material any one: N-formyl alkyl imino Synthetic rubber, isoprene-styrene, hydrogenated, block, diblock, Polyoxyethylene Methyl acryate-propylene cyanogen graft copolymer; Described functional additive is the composition of following several material: zeolite, Wingdale, kaolin, starch, stalk; Its ratio is zeolite: Wingdale: kaolin: starch: stalk=2 ~ 4:1 ~ 5:1 ~ 3:1 ~ 2:5 ~ 10, and wherein zeolite particle size is 50 ~ 80 orders, and stalk granularity is 3 ~ 7cm.
3. a kind of ecological nitrogen fertilizer according to claim 1 and preparation method thereof, it is characterized in that: the plasma reactor wherein used in step (3) described plasma irradiating, gases used is nitrogen, the power input of plasma reactor is 1000W ~ 5000W, frequency is 10 ~ 20KHZ, irradiation temperature is 25 DEG C ~ 35 DEG C, and input bleed pressure is 0.008MPa ~ 0.020MPa.
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| PCT/CN2015/099660 WO2016115964A1 (en) | 2015-01-23 | 2015-12-30 | Ecological nitrogen fertilizer and preparation method |
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| WO2016115964A1 (en) * | 2015-01-23 | 2016-07-28 | 成都新柯力化工科技有限公司 | Ecological nitrogen fertilizer and preparation method |
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| CN113767833B (en) * | 2020-06-09 | 2023-07-04 | 杭州元成规划设计集团有限公司 | Slope growth matrix and preparation method thereof |
| CN115215704A (en) * | 2022-07-28 | 2022-10-21 | 无锡国联环保科技股份有限公司 | Novel application of sludge hydrolyzed polypeptide concentrated solution |
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