CN102851032B - Alkaline earth improving agent prepared by using monosodium glutamate production waste liquid, and preparation method thereof - Google Patents
Alkaline earth improving agent prepared by using monosodium glutamate production waste liquid, and preparation method thereof Download PDFInfo
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- CN102851032B CN102851032B CN201210333633.5A CN201210333633A CN102851032B CN 102851032 B CN102851032 B CN 102851032B CN 201210333633 A CN201210333633 A CN 201210333633A CN 102851032 B CN102851032 B CN 102851032B
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Abstract
The invention relates to a treatment technology of an industrial waste, and specifically relates to an alkaline earth improving agent prepared by using monosodium glutamate production waste liquid, and a preparation method thereof. According to dry substance weight ratio, the improving agent comprises 30-40 parts of monosodium glutamate waste fluid, 20-30 parts of biological carbon, 15-20 parts of lignite, 5-10 parts of fly ash, and 15-20 parts of diatomite. The preparation method comprises the steps that: according to the dry substance weight ratio, biological carbon, lignite, fly ash, and diatomite are well mixed; the mixture is added into concentrated monosodium glutamate waste fluid; and the mixture is well mixed, dried in air, sieved, well mixed, and packaged, such that finished products are obtained. The technology is environment-friendly and simple, and the cost is low. The soil improving agent is mainly used in mildly or moderately alkaline earth farmlands. The improving agent can be used independently, and can be mixed with a chemical fertilizer for applying.
Description
Technical field
The present invention relates to trade waste treatment technology, a kind of waste liquid that utilizes glutamate production is prepared alkali soil improvement agent and preparation method thereof specifically.
Background technology
Utilize the synthetic L-glutamic acid of biofermentation technique to produce monosodium glutamate, in fermented liquid, must add corresponding nitrogen, Repone K, potassium primary phosphate, magnesium sulfate, zinc sulfate, manganous sulfate, ferric sulfate, borax, these nutritive substances are all retained in waste liquid, also contain the organism such as residual sugar, thalline simultaneously.Chemical oxygen demand (COD) (the COD of the discarded liquid of high density producing in ion-exchange link
cr) be 30,000～45,000mg/L, biochemical oxygen demand (BOD) (BOD
5) be 20,000～25,000mg/L, suspended solid total amount (SS) 10,000～15,000mg/L, NH
3-N content is 10,000～15,000mg/L, SO
4 2-content is 40,000～50,000mg/L, pH value 2～3, be the industrial waste that a kind of intractability is high (buy vinine etc. Comprehensive treatment technology for monosodium glutamate wastewater. Henan science, 2002,20(4): 388～391).At present, utilizing the discarded liquid of glutamate production process intermediate ion exchange high density to produce fertilizer is an approach of recycling, but most technology are made dry powder by waste liquid evaporation concentration, again with addition of nitrogen phosphorus potassium and trace element, make composite fertilizer (Chinese invention patent application separately number: CN1136029A, CN1169474A, CN1442396A, CN1288877A, CN1170789C, CN101045657A, CN101037353A; Ji Baode. produce the novel process of compoiste fertilizer with monosodium glutamate waste liquid throw out. phosphate fertilizer and compound fertilizer, 2002,17 (3): 55-57; Wang Yongquan, Gao Lidong. glutamic acid fermentation tail washings is produced organic-inorganic compound fertilizer. the scientific and technological communication of fermenting, 2007,36 (2): 25-26).Wherein, the energy consumption that waste liquid is prepared dry powder link is high, and the cost that adds diammonium phosphate or monoammonium phosphate is relative also higher, and except only a few technology is carried out industrialization production, technology popularization application difficulty is larger mostly.If stoste is concentrated, make in waste liquid solid matter content 20～30%, then add other raw materials with in and moisture, cost will reduce greatly.Nitrogen and SO in concentrated rear composition
4 2-content is higher, itself can provide a large amount of nitrogens and Sulfur, wherein a large amount of amino acid of content has certain activation to phosphorus element, be equipped with other solid materials, produce soil improvement agent, reaching the dual purpose of refuse harmless treatment and recycling, is comparatively desirable technical measures.
Charcoal is the solid by-products after biomass Low Temperature Thermal under anaerobic or micro-oxygen condition transforms, and is that organic carbon content is high, the multi-purpose material of porousness, alkalescence, high adsorption capacity.Charcoal can improve soil organic carbon, improves soil water-retaining and fertilizer conservation performance, reduces nutrient loss, is of value to that soil microorganisms perches and movable, is good soil improvement agent.Charcoal delays the nutrient of fertilizer in soil and discharges, and reduces nutrient loss, improves fertilizer nutrient utilization ratio, is the effective carrier of fertilizer nutrient synergy.Charcoal is very stable in soil, buries after underground and can have hundreds of to more than one thousand years can not disappear, and can for a long time carbon be stored in to soil admittedly, has the solid carbon potentiality of extremely strong soil, contributes to slowing global warming.Utilize abandoned biomass to produce charcoal, and will be the multi-win technology with bright prospects by agricultural charcoal.At present, the utilization ratio of the waste (as rice husk, corn cob etc.) producing in China's agricultural crop straw and farm crop production process is very low, make based on this charcoal, and apply in agriculture production, will be a technology having a extensive future in Development of Recycle Agriculture process.Aspect charcoal fertilizer and soil improvement, Chinese invention patent application publication No. CN102424642A discloses a kind of by the charcoal obtaining after hot cracked useless to maize straw or apple tree limb wood chip or gasification; By charcoal and ammonium nitrate solution or the mixing of urea-ammonium nitrate solution, stirring and drying, adds binding agent, and granulation is dried, and produces the method for charcoal base slow-release nitrogen fertilizer, and tool improves effect of utilization rate of nitrogen fertilizer; CN102515914A has announced a kind of method of preparation and use of biomass carbon fertilizer, feature is by air-dry biomass material, pulverizing, under 250～650 ℃ of anoxics or oxygen free condition, carry out after carbonization, grinding is sieved, and prepares biomass carbon fertilizer and directly uses in farmland; CN102405706A has announced a kind of method of utilizing the biomass carbonated product improvement of agricultural wastes ripening salt alkaline earth; CN102358714A has announced a kind of multifunctional biomass charcoal fertilizer that utilizes stalk, kitchen waste biomass charcoal to produce; CN102342301A has announced a kind of leaf surface conditioning agent and application method thereof that utilizes stalk and the remaining biomass carbonated byproduct of life cupboard.In the method for the above-mentioned soil improvement that utilizes charcoal making fertilizer, provide some agricultural technological approaches of charcoal, but the nutrient content of charcoal own is low, use and there is certain limitation separately as soil improvement agent or amendment, in practical application, have much room for improvement.Its Raw, also has good effect as brown coal, flyash and diatomite etc. have improvement alkaline earth aspect, and these raw materials can use separately, also can be used in conjunction with.
Alkaline earth refers to the exchangeable sodium of soil colloid absorption some amount, and basicity, more than 15～20%, produces the soil of harm in various degree to crop normal growth.Make alkali soil improvement agent has a dual effect take trade waste as main raw material: the one, carry out harmless treatment and the recycling of industrial solid castoff; The 2nd, improvement low yield alkaline earth, reduces fertilising cost, economizes on resources, and Circulation Agriculture Development, realizes farmland sustainable use.
Summary of the invention
The object of the present invention is to provide a kind of waste liquid that utilizes glutamate production to prepare alkali soil improvement agent and preparation method thereof.
For achieving the above object, the technical solution used in the present invention is as follows:
Utilize the waste liquid of glutamate production to prepare an alkali soil improvement agent, it is characterized in that: described modifying agent is by dry matter weight ratio, 5～10 parts, 30～40 parts of monosodium glutamate waste liquids, 20～30 parts of charcoals, 15～20 parts, brown coal, 15～20 parts, flyash and diatomite.Press dry matter weight ratio, charcoal, brown coal, flyash, diatomite are mixed, join in the waste liquid of glutamate production, mix, air-dry, sieve, mix to obtain alkali soil improvement agent.
The waste liquid of described glutamate production is the discarded liquid of high density producing in ion-exchange link in glutamate production process, and the discarded liquid of high density adopts flocculation-air floating-triple effect concentrating under reduced pressure method of evaporation, makes stoste process evaporation concentration to solid matter weight content 20～30%.
Described charcoal is the solid product of waste through obtaining after 300～500 ℃ of charings in charring furnace that farm crop produce, then pulverizes or ball mill grinds with pulverizer, crosses 10 mesh sieves.
One or more in the waste that the waste that described farm crop produce produces for corn, soybean, broomcorn straw, straw, rice husk and/or corn cob.
Described brown coal are more than 30% earthy browncoal of humic acids weight content.
Described flyash is the flyash that heat power plant's production process produces, and crosses 40～60 mesh sieves.
Described air-dry be to water content 10～15% by air-dry mixture.
Described air-dry rear mixture is crossed 5 orders or 10 mesh sieves.
Tool of the present invention has the following advantages:
1. technique of the present invention is simple, easily implement, and raw material abundance, raw materials used cheap.
2. the present invention's monosodium glutamate waste liquid used is trade waste, monosodium glutamate waste liquid only need be concentrated to solid matter content 20～30%, do not need to make dry powder, utilize the moisture in charcoal, brown coal, flyash, diatomite and in concentrated solution, greatly reduce the processing cost of energy consumption and waste liquid; Meanwhile, for glutamate production waste provides good method for innocent treatment and recycling approach.
3. the present invention utilizes the concentrated solution of the discarded liquid of high density producing in glutamate production ion exchange process, add charcoal, brown coal, flyash, diatomite, utilize the given efficacy of various system component, by the synergistic function of each composition, reach and improve organic carbon content in soil, sweetening of the soil alkalescence, reduce soil pH, improve soil permeability energy, promote the formation of soil agreegate, improve soil water-retaining, fertilizer conservation performance, reduce nutrient loss, improve the utilization ratio of chemical nitrogen fertilizer and phosphate fertilizer, thereby improve the effect of soil productivity, make gained alkali soil improvement agent environmental friendliness, technique is simple, with low cost, mainly solve the low inferior problem of productivity that the environmental pollution of glutamate production waste liquid and alkaline earth cause because of Environmental Factors.
4. the composition of raw materials in the present invention is reasonable, and its main component has the specific mechanism of action: the discarded liquid of high density that 1. production of gourmet powder ion-exchange link produces contains higher sulfate radical, can in and alkalescence in alkaline earth, reduce soil pH; The discarded liquid of high density also contains each seed amino acid, residual sugar, nitrogen, phosphorus, potassium and the various plants required trace element of growing, and waste liquid itself can provide certain nutritive element such as nitrogen and phosphorus; The small molecular organic acid producing in amino acid wherein and production fermenting process has good activation to phosphorus element, is a kind of element of phosphorus preferably synergistic agent raw material; 2. charcoal is the solid by-products after biomass Low Temperature Thermal under anaerobic or micro-oxygen condition transforms, and is that organic carbon content is high, the multi-purpose material of porousness, alkalescence, high adsorption capacity.Charcoal can improve soil organic carbon, improve Soil structure, promote the formation of soil agreegate, improve soil water-retaining, fertilizer conservation performance, reducing nutrient loss, is the effective carrier of fertilizer nutrient synergy, is of value to that soil microorganisms perches and movable, particularly mycorrhizal fungi is good soil improvement agent; A large amount of calcium, the magnesium ions of content in charcoal, by increasing the content of exchangeable calcium, magnesium ion in soil, can reduce the saturation ratio of sodium ion in soil greatly, thereby improves soil permeability energy; 3. the sulfate radical effect in humic acids and monosodium glutamate waste liquid in brown coal, becomes the humic acids of activation after acidifying.Activation humic acids has nitrogen and the fixing effect of minimizing phosphorus element of keeping, activation humic acids after being manured into soil can promote the formation of soil agreegate, improve Soil structure, reduce saline and alkaline harm in soil, the brown coal after acidifying are very effective to the improvement of alkali-affected soil; 4. flyash is the solid waste that thermal power generation produces, and is that a kind of chemical stability is high, and the stopping composition that absorption property is good, itself contains higher calcium oxide and magnesium oxide, is the good industrial produced wastes of one that reduces sodium saturation ratio in soil; 5. diatomite is generally to be formed by the dead later silicate remains of the unicellular algae that is referred to as diatom, main chemical is moisture noncrystal silicon-dioxide, with clay mineral (iron, calcium, magnesium, aluminum oxide) and organic matters such as a small amount of montmorillonite, kaolinites.Its stable chemical performance, hole is molten greatly, aperture is large, specific surface area is large, is a kind of saline and alkaline high-quality non-metallic minerals of improveing.
5. raw materials of the present invention is all alkali soil improvement agent of high-quality, and has certain fertilizer efficiency, and formula material is pollution-free to soil and crop, without residual hazard, and environmental friendliness.
Embodiment
In the present invention, monosodium glutamate waste liquid is for adopting prior art take corn as raw material, produce in monosodium glutamate process by zymotechnique, the discarded liquid of high density producing in ion-exchange link, adopt flocculation-air floating-triple effect concentrating under reduced pressure method of evaporation, make stoste through evaporation concentration to solid matter weight content 20～30%, obtain concentrated solution (buy vinine etc. Henan science, 2002,20 (4): 388～391).
In the present invention, described charcoal is at least one solid product obtaining after 300～500 ℃ of charings in charring furnace in the waste produced of the farm crop such as corn, soybean, broomcorn straw, straw, rice husk, corn cob, with pulverizer pulverize or ball mill grind, cross 10 mesh sieves.
In the present invention, it is 30%(weight that brown coal adopt humic acids (HA) content) above commercially available earthy browncoal.Earthy browncoal is the more shallow a kind of brown coal of degree of coalification, as the product of Inner Mongolia Autonomous Region Huolin Gol coal production, the main chemical constitution (by weight percentage) of brown coal is: contain 30～50wt% humic acids, and carbon containing 70～80%, hydrogen 5～6%, nitrogen and oxygen 15～25%, surplus is impurity.Its main weight is composed as follows: carbon containing 70～80%, hydrogen 5～6%, nitrogen and oxygen 15～25%.
In the present invention, described flyash is the flyash that heat power plant's production process produces, and crosses 40～60 mesh sieves.Its main chemical constitution (by weight percentage) is as follows: silicon-dioxide 40～60%, aluminium sesquioxide 25～35%, ferric oxide 5～15%, calcium oxide 3～10%, and magnesium oxide 1～2%, potassium oxide 1～2%, sodium oxide 1～2%, surplus are impurity.
In the present invention, described diatomite was the diatomite in powder of 40～60 mesh sieves, its main chemical compositions is by weight percentage: silicon-dioxide 91～94%, aluminium sesquioxide 2～3%, ferric oxide 0.4～0.6%, magnesium oxide 0.1～0.3%, calcium oxide 0.2～0.4%, surplus is impurity.
In the present invention, moisture content refers to weight percent.
Embodiment 1
The alkali soil improvement agent composition that utilizes glutamate production waste liquid is by dry matter weight ratio: 35 parts of monosodium glutamate waste liquids, 25 parts of charcoals, 15 parts, brown coal, 20 parts, flyash, 5 parts, diatomite.By proportioning cross 10 mesh sieves charcoal, brown coal, cross 50 mesh sieves flyash, cross the diatomite of 50 mesh sieves, even by mechanically mixing, join in the monosodium glutamate waste liquid that concentrated rear solid matter weight content is 25%, mix, mixture is air-dry to water content 10%(weight), cross 5 mesh sieves, mix, after packing, obtain alkali soil improvement agent.
Embodiment 2～9:
Difference from Example 1 is: the proportioning of raw material is difference (table 1) to some extent, and concrete preparation method is with embodiment 1.
Table 1
Application examples 1
In Kangping County, Liaoning Province, an area is selected approximately, about 1000m by two new villages of home township
2, physical features is smooth, the medium rice terrace on the lower side of soil fertility, soil type is Meadow Alkaline Soils, belongs to slight alkaline earth, tests front 0～20cm topsoil soils essential property as follows: soil pH is 8.45, soil organic matter content 7.69g/kg, total nitrogen content 0.49g/kg, content of tatal phosphorus 0.37g/kg, quick-acting potassium content 49.38mg/kg, available phosphorus contents 7.63mg/kg, cation exchange capacity 12.67cmol/kg, exchangeable sodium 3.54cmol/kg, basicity is 27.94%.12 60m are set
2community.4 processing, repeat for 3 times, contrast as not executing modifying agent, process 1,2,3 for executing respectively alkali soil improvement agent 50,100, the 150kg/667m of embodiment 1
2, be paddy rice for studying thing, above-mentioned alkali soil improvement agent and fertilizer are Base-appling once.Test-results shows, uses the alkali soil improvement agent of this invention, can significantly increase rice yield (table 2), reduce slight alkaline earth soil pH and the soil weight, improve Cation Exchange Capacity in Soils, reduce content and the saturation ratio (table 3) of sodium ion, can reach the effect of good improvement alkaline earth.
Table 2 test is processed and rice yield effect
Table 3 is used the impact of modifying agent on soil essential property
Claims (7)
1. a method of utilizing the waste liquid of glutamate production to prepare alkali soil improvement agent, it is characterized in that: described modifying agent is by dry matter weight ratio 5～10 parts, 30～40 parts of monosodium glutamate waste liquids, 20～30 parts of charcoals, 15～20 parts, brown coal, 15～20 parts, flyash and diatomite;
Press dry matter weight ratio, charcoal, brown coal, flyash, diatomite are mixed, join in the waste liquid of glutamate production, mix, air-dry, sieve, mix to obtain alkali soil improvement agent.
2. by the method for utilizing the waste liquid of glutamate production to prepare alkali soil improvement agent claimed in claim 1, it is characterized in that: the waste liquid of described glutamate production is the discarded liquid of high density producing in ion-exchange link in glutamate production process, the discarded liquid of high density adopts flocculation-air floating-triple effect concentrating under reduced pressure method of evaporation, makes stoste process evaporation concentration to solid matter weight content 20～30%.
3. by the method for utilizing the waste liquid of glutamate production to prepare alkali soil improvement agent claimed in claim 1, it is characterized in that: described charcoal is the solid product of waste through obtaining after 300～500 ℃ of charings in charring furnace that farm crop produce, grind with pulverizer pulverizing or ball mill again, cross 10 mesh sieves.
4. by the method for utilizing the waste liquid of glutamate production to prepare alkali soil improvement agent claimed in claim 1, it is characterized in that: described brown coal are more than 30% earthy browncoal of humic acids weight content.
5. by the method for utilizing the waste liquid of glutamate production to prepare alkali soil improvement agent claimed in claim 1, it is characterized in that: described flyash is the flyash that heat power plant's production process produces, and crosses 40～60 mesh sieves.
6. by the method for utilizing the waste liquid of glutamate production to prepare alkali soil improvement agent claimed in claim 1, it is characterized in that: described air-dry for by air-dry mixture to moisture content weight content 10～15%.
7. by the method for utilizing the waste liquid of glutamate production to prepare alkali soil improvement agent claimed in claim 6, it is characterized in that: described air-dry rear mixture is crossed 5 orders or 10 mesh sieves.
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| CN105367334B (en) * | 2014-11-15 | 2019-06-14 | 深圳市芭田生态工程股份有限公司 | The soil conditioner and its method produced using natural minerals and organic waste |
| CN105062499A (en) * | 2015-08-28 | 2015-11-18 | 贵州开磷集团股份有限公司 | Three-step improvement method for saline alkali soil |
| CN105753516A (en) * | 2016-01-20 | 2016-07-13 | 江西省红壤研究所 | Method of manufacture and method of use of biochar capable of promoting growth of seedlings in gleyed rice field |
| CN106053447B (en) * | 2016-05-11 | 2020-08-07 | 首都师范大学 | Method for measuring soil carbon sequestration effect in rice growing season and biochar composition |
| WO2018119640A1 (en) * | 2016-12-27 | 2018-07-05 | 王璐 | Fertilizer for improving alkali soil |
| CN106905979A (en) * | 2017-02-22 | 2017-06-30 | 安徽帝元现代农业投资发展有限公司 | It is a kind of to add modified soil conditioner straw biomass charcoal of monosodium glutamate waste liquid and preparation method thereof |
| CN108218562A (en) * | 2017-12-27 | 2018-06-29 | 新疆慧尔农业集团股份有限公司 | A kind of salt-soda soil special conditioning agent and preparation method thereof |
| CN109536177A (en) * | 2018-12-24 | 2019-03-29 | 吉林中粮生化有限公司 | The soil conditioner and production method produced using sodium glutamate mother liquid and trade waste |
| CN110041941B (en) * | 2019-04-15 | 2021-04-23 | 中国矿业大学(北京) | Soil conditioner for fast curing of semi-crude soil and method for fast curing of semi-crude soil |
| CN110157449B (en) * | 2019-06-03 | 2020-12-18 | 阜阳师范学院 | Method for improving saline-alkali soil by using biochar |
| CN110590460A (en) * | 2019-10-17 | 2019-12-20 | 辽宁省农业科学院 | Freezing-reducing melting-controlling synergist for agricultural production in cold regions, preparation method and application |
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