CN104119184A - Production method of sludge compressed nutrient soil - Google Patents
Production method of sludge compressed nutrient soil Download PDFInfo
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- CN104119184A CN104119184A CN201410394568.6A CN201410394568A CN104119184A CN 104119184 A CN104119184 A CN 104119184A CN 201410394568 A CN201410394568 A CN 201410394568A CN 104119184 A CN104119184 A CN 104119184A
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Abstract
The invention discloses a production method of sludge compressed nutrient soil. According to the technical scheme, the production method is characterized by comprising the following steps: stirring, compressing, sterilizing at a low temperature by use of microwave and packaging raw materials of the sludge compressed nutrient soil to obtain the finished product. The sludge compressed nutrient soil is composed of sludge, high-viscosity attapulgite clay, flower ceramsite, peat soil, biogas residue, broken plant fibers, expanded vermiculite, expanded perlite, ferrous sulfate and super absorbent resin. The sludge compressed nutrient soil contains abundant nitrogen, phosphorus, potassium, organic matters and a plurality of trace elements, and thus is capable of providing necessary nutrient elements for the growth of plants and reducing the harms, caused by pathogenic bacteria and insect pests, to plants, and advantageous for normal growth and development of plants; as a result, the ecological environment is protected and secondary pollution on the surrounding environment is avoided; the production method of the sludge compressed nutrient soil is suitable for producing the sludge compressed nutrient soil different in formulas.
Description
Technical field
The present invention relates to Nutrition Soil, be specifically related to a kind of production method of mud compression Nutrition Soil.
Background technology
Mud is the smelly paste of a kind of easy corruption producing in sewage treatment process, its enrichment the pollutent in sewage, contain the hazardous and noxious substances such as the nutritive substances such as a large amount of nitrogen, phosphorus and organism, viral micro-organisms, parasitic ovum, heavy metal, without effectively processing and dispose, will environment be produced to serious harm.
Sludge moisture content >=80% that municipal sewage plant produces, mud is alkalescence mostly, and pH value is 8～10, the product of unsuitable direct production recycling.
Investigation shows, China has 80% mud not to be effectively addressed at present, even has greatly and is simply discarded in the PEs such as farmland, river, becomes new source of pollution.
At present a large amount of not mud of stabilizing treatment has become the heavy burden of sewage work, and mud how that output is huge, complicated component is properly processed safely, makes that it is innoxious, minimizing, resource utilization, has become dark concerned key subjects.
Nutrition Soil is the multiple mineral nutrition that contains of preparing specially in order to meet seedling growth growth, loose ventilation, and preserve moisture and fertility ability is strong, without the soil of disease and pest.Generally by fertile land for growing field crops soil, formed with decomposed dung mixed preparing, also be selected from import high-quality peat, coconut palm chaff, the Nutrition Soil mixing in specific proportions, but these Nutrition Soils are not through reasonably preparing burden and strict sterilization, are unfavorable for that the normal growth of nursery stock is grown.
Because Nutrition Soil is after treatment low weight and loose, the conventional products volume of Nutrition Soil is relatively large, is unfavorable for reducing the cost of producing and transporting.
Summary of the invention
The object of the invention is to overcome weak point in prior art, a kind of production method of mud compression Nutrition Soil is provided.
The production method of mud compression Nutrition Soil: the batching that mud is compressed to Nutrition Soil stirs, be packaged as finished product after compression, microwave temperature sterilization.
Mud compression Nutrition Soil is comprised of mud, high vegetable fibre, expanded vermiculite, pearlstone, ferrous sulfate and the High hydrophilous resin gluing after attapulgite clay, flower ceramsite, peat soil, natural pond slag, pulverizing.
For the significant challenge of reply water resource environment, China will continue to strengthen the investment of urban infrastructure.The energy-conserving and environment-protective requirement day by day improving along with government, the continuation of municipal public use are open, the propelling of Environmental Industry policy and being gradually improved of investment and financing environment, and wastewater treatment in China and regeneration cause will welcome Historic Opportunities for th e Development.
In the mud of city domestic sewage treatment plant, contain a considerable amount of nitrogen, phosphorus, potassium and trace element, through suitable art breading, as cultivation medium soil, soil improvement material, also can be used as the raw material of making fertilizer, the present invention selects the mud of city domestic sewage treatment plant discharge, water content≤90% of mud.
High sticky attapulgite clay is the attapulgite clay that adopts the complete processing production that improves viscosity of attapulgite clay, attapulgite clay is after batching stirs, in input grinding machine, carry out abrasive dust for high sticky attapulgite clay powder, particle fineness≤0.074 millimeter.
High sticky attapulgite clay soil property is fine and smooth, has oily soapy, and light weight, property are crisp, fracture is conchoidal or irregular shape, and water-absorbent is strong, tool viscosity and plasticity-when wet, viscosity >=the 2200mPas of high sticky attapulgite clay powder, sticking power is good, is conducive to the bonding between raw material.
Gravel attapulgite flower ceramsite surface irregularity porous, it is a kind of lightweight, intensity is large, water-intake rate is high flower ceramsite, gravel attapulgite flower ceramsite can be immersed in water throughout the year and can not produce and burst apart, and constantly slowly discharging the needed nutrition of flowers, the present invention selects the particle fineness of gravel attapulgite flower ceramsite to be controlled at 1～3 millimeter.
Peat is called again the peat composed of rotten mosses or peat soil, and peat venting capability is good, light weight, water holding, fertilizer conservation, is conducive to microbial activities, strengthen biological property, nutritious, be cultivation matrix, it is again good soil mediator agent, and contain very high organic matter, and humic acid and nutrition, the peat after pulverizing is to pulverize after peat is dried, peat particle fineness≤2 millimeter after pulverizing, water content≤15% of peat.
Natural pond liquid decomposes through microorganism, has killed harmful viral bacterium, the nutrient that contains various plants growth, and abundant amino acid and various tethelin, VITAMIN etc., are a kind of quick-acting and the long-lasting liquid fertilizer that has both and become thoroughly decomposed.
Natural pond slag is rich in organic matter, soil ulmin, nitrogen, phosphorus, potassium, micronutrient element, multiple amino acids, enzyme and beneficial microorganism, can play the effect of good improvement soil.
Vegetable fibre after pulverizing is to pulverize after the plants such as the straw of farm crop, wood chip, bamboo bits and leaf are dried, plant fiber length≤15 millimeter after pulverizing, water content≤15% of vegetable fibre.
Vermiculite is after high-temperature roasting, and its volume energy expands rapidly several times to tens times, and the vermiculite after volumetric expansion, expanded vermiculite, is one of the lightest in the world mineral; Expanded vermiculite as soil improvement agent, can improve the structure of soil, and water storage soil moisture conservation improves ventilation property and the aquosity of soil, plays the multiple actions such as fertilizer conservation, water conservation, water storage, ventilative and mineral manure.
Perlite becomes a kind of lightweight, multifunctional novel shaped material through expansion.Have the features such as apparent density is light, thermal conductivity is low, chemical stability is good, pearlstone is for fertilizer conservation, water conservation, aseptic, good permeability on agricultural, gardens.
Anhydrous slufuric acid ferrous iron is white powder, ferrous sulfate containing crystal water is light green crystal, the ferrous sulfate of 10% aqueous solution is acid to reindeer moss, pH value is about 3.7, in the present invention not only can in and the alkalescence of mud, as the supplement of plant ferro element, plant answers iron deficiency and physiological disturbance occurs in control, make leaf look chlorosis, can also be used to kill liver moss.
The water absorbent rate of High hydrophilous resin can reach hundreds of times even thousands of times of own wt, and it is 100～300 times that the present invention selects the water absorbent rate of High hydrophilous resin.
The present invention is achieved by following technical proposals:
1, the production method of mud compression Nutrition Soil: (1) mud is compressed in the stirrer of batching input running of Nutrition Soil and stir, after stirring, input boil down to mud compression Nutrition Soil flap in tabletting machine, the gauge control of mud compression Nutrition Soil flap is at 5～30 millimeters; (2) mud is compressed to Nutrition Soil flap and be transported to and in belt type microwave dry sterilizer, carry out temperature sterilization and dry, temperature is controlled at 60～100 ℃, and the time is controlled at 30～120 minutes, sterilizing and dried mud compression Nutrition Soil flap water content≤15%; (3) by sterilizing and dried mud compression Nutrition Soil flap, be transported in insulated sterilizing storehouse, utilize in mud compression Nutrition Soil flap the waste heat of self, proceed sterilizing and dry, after mud compression Nutrition Soil flap is cooling, be packaged as the finished product of mud compression Nutrition Soil.
The batching that mud compresses Nutrition Soil is comprised of following component by weight percentage: the vegetable fibre 1～10% after the gravel attapulgite flower ceramsite 2～15% after mud 25～75%, high sticky attapulgite clay 2～15%, natural pond immersion bubble, the peat 2～15% after pulverizing, natural pond slag 2～15%, pulverizing, expanded vermiculite 0.5～5%, pearlstone 0.5～5%, ferrous sulfate 0.1～5% and High hydrophilous resin 0.1～5%.
2, by particle fineness, be to soak in the gravel attapulgite flower ceramsite input natural pond liquid pool of 1～3 millimeter, gravel attapulgite flower ceramsite is after soaking, can absorb fast a large amount of natural pond liquid, soak time is controlled at 30～60 minutes, the gravel attapulgite flower ceramsite of taking-up after natural pond immersion bubble carries out airing, gravel attapulgite flower ceramsite water content≤15% after airing.
The batching of gravel attapulgite flower ceramsite is comprised of following component by weight percentage: high sticky attapulgite clay powder 1～10%, attapulgite clay mine tailing 5～25%, red bentonite in powder 5～20%, mud 45～65%, diatomite mine tailing 5～20% and powdered rice hulls 1～10%;
The production method of gravel attapulgite flower ceramsite: input Squeezinggranulator granulation after (1) the batching of gravel attapulgite flower ceramsite being added to stirrer for mixing, particle diameter is controlled at 8～25 millimeters, and particle length is controlled at 10～40 millimeters; (2) by the particle input internally heated type revolution roasting in kilns after granulation, maturing temperature is controlled at 550～850 ℃, and roasting time is controlled at 1～6 hour; (3) will in the particle input crusher after roasting, pulverize as gravel particle and sieve, particle fineness be controlled at 1～12 millimeter, is gravel attapulgite flower ceramsite.
Gravel attapulgite flower ceramsite is to adopt " gravel attapulgite flower ceramsite " applied on November 10th, 2011 by the inventor, and Chinese patent Granted publication number is: CN 102503372 B, Granted publication day: on 04 17th, 2013.
3, high sticky attapulgite clay is the attapulgite clay that adopts the complete processing production that improves viscosity of attapulgite clay, it is characterized in that, and from the attapulgite clay of mining area exploitation, need to be through the weathering of 30～120 days; Modification processing method is: calculate by weight percentage, get the attapulgite clay 94～98% after weathering, evenly add 2～6% sodium carbonate, jointly input in fermentation vat, add clear water to soak ageing, soak time is 72～120 hours; Get the attapulgite clay after immersion, in input stirrer, stir, and by the attapulgite clay after stirring, through extrusion machine, be extruded into thin slice, its gauge control is at 0.5～2 millimeter, by attapulgite clay thin slice, carry out airing, the attapulgite clay thin slice after airing, its water content≤15%; Batching is calculated by weight percentage: the attapulgite clay 94～98% after airing, High hydrophilous resin 0.5～5% and Mierocrystalline cellulose 0.5～3%, above-mentioned batching is stirred, and after stirring, input and in grinding machine, carry out abrasive dust, particle fineness≤0.074 millimeter.
Above-mentioned production technique is to adopt " the improving the complete processing of viscosity of attapulgite clay " of being applied on June 20th, 2005 by the inventor, and Chinese patent Granted publication number is: CN 1317067C, Granted publication day: on May 23rd, 2007.
The detection method of high sticky attapulgite clay: get 28.0g attapulgite clay powder sample, add in the suspension cup of homogenizer, add again 372g water, suspension cup is placed on homogenizer, under the rotating speed of 11000 revs/min, stir 20 minutes, to pour in the beaker of 250mL through high-speed stirring sample suspension, use NDJ-1 type rotational viscosimeter to carry out the viscosity of test suspension liquid, tested viscosity value >=2200 mPas is high sticky attapulgite clay.
Described in the present invention, PCm is all weight percentage.
The fresh sludge that city domestic sewage treatment plant produces is alkalescence mostly, and pH value is 8～10, adds ferrous sulfate to carry out after acidification in fresh sludge, and mud is slightly acidic, and pH value is controlled at 5.5～7.0.
Sterilizing and dried mud compression Nutrition Soil flap are transported in insulated sterilizing storehouse, utilize waste heat to continue mud compression Nutrition Soil to carry out sterilizing and dry, can continue to kill germ and the insects such as excrement colibacillus group that in mud compression Nutrition Soil, Disabled stays, roundworm egg, nematode, weed seed in mud and peat can also be steamed extremely, avoid the germination again of weed seed.
Ferrous sulfate not only can conditioning of mud potential of hydrogen, can also impel chlorophyll formation, can prevent and treat flowers and trees because of the yellows that iron deficiency causes, be the indispensable elements of the acid flowers and trees of happiness.
Gravel attapulgite flower ceramsite is inputted in the liquid pool of natural pond and soaked, and flower ceramsite inside will suck a large amount of natural ponds liquid, to increase effective nutritive ingredient of mud compression Nutrition Soil; Flower ceramsite can also play and regulate soil aggregate, coordinate moisture and ventilation property in mud compression Nutrition Soil, is conducive to crop root and stretches and normal growth.
The mud that directly utilizes city domestic sewage treatment plant is main raw material, after batching, stirring, compression and temperature sterilization, produce a kind of mud compression Nutrition Soil of sheet, volume-diminished before the compression of small product size ratio is below 25%, greatly reduce production and the transportation cost of product, increase the economic benefit of enterprise.
The using method of mud compression Nutrition Soil: mud is compressed to Nutrition Soil and put into water and soak after 5 minutes, the mud compression Nutrition Soil of sheet is reduced to loose Nutrition Soil very soon, and after water suction, the weight of the former compression Nutrition Soil of weight ratio of loose Nutrition Soil has increased more than 5 times.
Mud compression Nutrition Soil can be used for construction and the maintenance processes in cities and towns green space system or forest land, suburb, as cultivation medium soil, soil improvement material, quality meets the national standard of " GB/T 23486-2009 urban wastewater treatment firm sludge disposal afforestation shale ".
Adopt production method of the present invention to produce mud compression Nutrition Soil; production technique is simple; do not need separately to mud concentrate, recuperate under medical treatment, dewater, stablize, the course of processing of mummification or burning; in whole production process, there is no waste gas, dust and dry sound; be conducive to preserve the ecological environment, avoided surrounding enviroment to cause secondary pollution.
In mud compression Nutrition Soil, contain a large amount of nitrogen, phosphorus, potassium, organic matter and various trace elements, be that a kind of nutrition is complete, fertilizer efficiency is high, nontoxic, aseptic, harmless, odorless and the good high-quality Nutrition Soil of water retention property, can provide plant-growth necessary nutritive element, do not use chemical fertilizer and chemical pesticide, reduce pathogenic bacteria and the harm of insect to plant, the normal growth that is conducive to plant is grown.
Mud compression Nutrition Soil can also be used to produce the mud compression planting brick of different shape.
The various wastes of a large amount of employing in the batching of mud compression Nutrition Soil, are not only conducive to improve resource utilization, turn waste into wealth, and can also reduce land occupation, and protection and environment purification, save the energy, reduces production costs, and increases economic efficiency.
The production method of mud compression Nutrition Soil is applicable to produce the mud compression Nutrition Soil of different ingredients.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
1, the production method of mud compression Nutrition Soil: (1) mud is compressed in the stirrer of batching input running of Nutrition Soil and stir, after stirring, input boil down to mud compression Nutrition Soil flap in tabletting machine, the gauge control of mud compression Nutrition Soil flap is at 24 millimeters; (2) mud is compressed to Nutrition Soil flap and be transported to and in belt type microwave dry sterilizer, carry out temperature sterilization and dry, temperature is controlled at 60～100 ℃, and the time is controlled at 42 minutes, sterilizing and dried mud compression Nutrition Soil flap water content≤12%; (3) by sterilizing and dried mud compression Nutrition Soil flap, be transported in insulated sterilizing storehouse, utilize in mud compression Nutrition Soil flap the waste heat of self, proceed sterilizing and dry, after mud compression Nutrition Soil flap is cooling, be packaged as the finished product of mud compression Nutrition Soil.
The batching that mud compresses Nutrition Soil is comprised of following component by weight percentage: the vegetable fibre 4% after the gravel attapulgite flower ceramsite 6% after mud 68%, high sticky attapulgite clay 10%, natural pond immersion bubble, the peat 5% after pulverizing, natural pond slag 4%, pulverizing, expanded vermiculite 1%, pearlstone 0.8%, ferrous sulfate 0.6% and High hydrophilous resin 0.6%.
2, by particle fineness, be to soak in the gravel attapulgite flower ceramsite input natural pond liquid pool of 1～3 millimeter, gravel attapulgite flower ceramsite is after soaking, can absorb fast a large amount of natural pond liquid, soak time is controlled at 40 minutes, the gravel attapulgite flower ceramsite of taking-up after natural pond immersion bubble carries out airing, gravel attapulgite flower ceramsite water content≤13% after airing.
Claims (4)
1. the production method of mud compression Nutrition Soil, it is characterized in that, (1) mud is compressed in the stirrer of batching input running of Nutrition Soil and stir, after stirring, input boil down to mud compression Nutrition Soil flap in tabletting machine, the gauge control of mud compression Nutrition Soil flap is at 5～30 millimeters; (2) mud is compressed to Nutrition Soil flap and be transported to and in belt type microwave dry sterilizer, carry out temperature sterilization and dry, temperature is controlled at 60～100 ℃, and the time is controlled at 30～120 minutes, sterilizing and dried mud compression Nutrition Soil flap water content≤15%; (3) by sterilizing and dried mud compression Nutrition Soil flap, be transported in insulated sterilizing storehouse, utilize in mud compression Nutrition Soil flap the waste heat of self, proceed sterilizing and dry, after mud compression Nutrition Soil flap is cooling, be packaged as the finished product of mud compression Nutrition Soil;
The batching that described mud compresses Nutrition Soil is comprised of following component by weight percentage: the vegetable fibre 1～10% after the gravel attapulgite flower ceramsite 2～15% after mud 25～75%, high sticky attapulgite clay 2～15%, natural pond immersion bubble, the peat 2～15% after pulverizing, natural pond slag 2～15%, pulverizing, expanded vermiculite 0.5～5%, pearlstone 0.5～5%, ferrous sulfate 0.1～5% and High hydrophilous resin 0.1～5%.
2. the gravel attapulgite flower ceramsite after natural pond immersion bubble according to claim 1, it is characterized in that, the gravel attapulgite flower ceramsite that is 1～3 millimeter by particle fineness is inputted in the liquid pool of natural pond and is soaked, soak time is controlled at 30～60 minutes, the gravel attapulgite flower ceramsite of taking-up after natural pond immersion bubble carries out airing, gravel attapulgite flower ceramsite water content≤15% after airing;
The batching of described gravel attapulgite flower ceramsite is comprised of following component by weight percentage: high sticky attapulgite clay powder 1～10%, attapulgite clay mine tailing 5～25%, red bentonite in powder 5～20%, mud 45～65%, diatomite mine tailing 5～20% and powdered rice hulls 1～10%; The production method of gravel attapulgite flower ceramsite: input Squeezinggranulator granulation after (1) the batching of gravel attapulgite flower ceramsite being added to stirrer for mixing, particle diameter is controlled at 8～25 millimeters, and particle length is controlled at 10～40 millimeters; (2) by the particle input internally heated type revolution roasting in kilns after granulation, maturing temperature is controlled at 550～850 ℃, and roasting time is controlled at 1～6 hour; (3) will in the particle input crusher after roasting, pulverize as gravel particle and sieve, particle fineness be controlled at 1～12 millimeter, is gravel attapulgite flower ceramsite.
3. high sticky attapulgite clay is the attapulgite clay that adopts the complete processing production that improves viscosity of attapulgite clay according to claim 1, it is characterized in that, and from the attapulgite clay of mining area exploitation, need to be through the weathering of 30～120 days; Modification processing method is: calculate by weight percentage, get the attapulgite clay 94～98% after weathering, evenly add 2～6% sodium carbonate, jointly input in fermentation vat, add clear water to soak ageing, soak time is 72～120 hours; Get the attapulgite clay after immersion, in input stirrer, stir, and by the attapulgite clay after stirring, through extrusion machine, be extruded into thin slice, its gauge control is at 0.5～2 millimeter, by attapulgite clay thin slice, carry out airing, the attapulgite clay thin slice after airing, its water content≤15%; Batching is calculated by weight percentage: the attapulgite clay 94～98% after airing, High hydrophilous resin 0.5～5% and Mierocrystalline cellulose 0.5～3%, above-mentioned batching is stirred, and after stirring, input and in grinding machine, carry out abrasive dust, particle fineness≤0.074 millimeter;
The detection method of high sticky attapulgite clay, it is characterized in that, get 28.0g attapulgite clay powder sample, add in the suspension cup of homogenizer, then add 372g water, suspension cup is placed on homogenizer, under the rotating speed of 11000 revs/min, stir 20 minutes, to pour in the beaker of 250mL through high-speed stirring sample suspension, use NDJ-1 type rotational viscosimeter to carry out the viscosity of test suspension liquid, tested viscosity value >=2200 mPas is high sticky attapulgite clay.
4. the batching of mud compression Nutrition Soil according to claim 1, it is characterized in that, water content≤90% of mud, peat particle fineness≤2 millimeter after pulverizing, water content≤15% of peat, water content≤15% of natural pond slag, plant fiber length≤15 millimeter after pulverizing, water content≤15% of vegetable fibre.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104987231A (en) * | 2015-07-27 | 2015-10-21 | 蒋文兰 | Production method for sludge carbonized nutrient soil |
| CN105110875A (en) * | 2015-07-27 | 2015-12-02 | 蒋文兰 | Production method for swill oil carbonization soil |
| CN107282012A (en) * | 2017-07-27 | 2017-10-24 | 广州市番禺盛达穗南有限公司 | Can dispose waste liquid middle heavy metal perlite compress Nutrition Soil production method |
| CN109220488A (en) * | 2018-11-18 | 2019-01-18 | 蒋文兰 | Using the method for sludge modular tree planting bag plantation shrub |
| CN109220339A (en) * | 2018-11-15 | 2019-01-18 | 蒋文兰 | For planting the sludge modular tree planting bag of shrub |
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| CN102119651A (en) * | 2010-12-22 | 2011-07-13 | 郭云征 | Small soilless culture method and device |
| CN102503372A (en) * | 2011-11-10 | 2012-06-20 | 许庆华 | Gravel attapulgite flower ceramsite |
| CN102627500A (en) * | 2012-04-17 | 2012-08-08 | 江苏花海农业科技有限公司 | Method for producing ecological environment protection water retention nutrient soil by using lake silt |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1699259A (en) * | 2005-06-20 | 2005-11-23 | 许庆华 | Process for improving viscosity of attapulgite clay |
| CN102119651A (en) * | 2010-12-22 | 2011-07-13 | 郭云征 | Small soilless culture method and device |
| CN102503372A (en) * | 2011-11-10 | 2012-06-20 | 许庆华 | Gravel attapulgite flower ceramsite |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104987231A (en) * | 2015-07-27 | 2015-10-21 | 蒋文兰 | Production method for sludge carbonized nutrient soil |
| CN105110875A (en) * | 2015-07-27 | 2015-12-02 | 蒋文兰 | Production method for swill oil carbonization soil |
| CN107282012A (en) * | 2017-07-27 | 2017-10-24 | 广州市番禺盛达穗南有限公司 | Can dispose waste liquid middle heavy metal perlite compress Nutrition Soil production method |
| CN109220339A (en) * | 2018-11-15 | 2019-01-18 | 蒋文兰 | For planting the sludge modular tree planting bag of shrub |
| CN109220488A (en) * | 2018-11-18 | 2019-01-18 | 蒋文兰 | Using the method for sludge modular tree planting bag plantation shrub |
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| CN104119184B (en) | 2016-04-06 |
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Effective date of registration: 20190724 Address after: 211700 Yulan Avenue 38-2, Xuyi County Economic Development Zone, Huaian City, Jiangsu Province Patentee after: Jiangsu Shiao Nonmetallic Application Technology Co., Ltd. Address before: 211700 Huaian, Xuyi province Timor King international residential area, building 2, unit 202 room 18 Patentee before: Xu Shengying |