CN113149757A - Method for preparing ecological restoration nutritive cube based on sludge quality of town sludge compost - Google Patents
Method for preparing ecological restoration nutritive cube based on sludge quality of town sludge compost Download PDFInfo
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- CN113149757A CN113149757A CN202110403056.1A CN202110403056A CN113149757A CN 113149757 A CN113149757 A CN 113149757A CN 202110403056 A CN202110403056 A CN 202110403056A CN 113149757 A CN113149757 A CN 113149757A
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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
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/28—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing peat, moss or sphagnum
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F5/00—Fertilisers from distillery wastes, molasses, vinasses, sugar plant or similar wastes or residues, e.g. from waste originating from industrial processing of raw material of agricultural origin or derived products thereof
- C05F5/006—Waste from chemical processing of material, e.g. diestillation, roasting, cooking
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
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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
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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
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/14—Tablets, spikes, rods, blocks or balls
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
Abstract
The invention relates to a method for preparing an ecological restoration nutritive cube based on sludge of town sludge compost, belonging to the field of resource utilization of solid waste. The method for preparing the ecological restoration nutrition block based on the sludge of the town sludge compost is characterized in that the sludge obtained after the biological composting of the town sludge is used as a main material, is mixed with an adhesive and a nutritional water-retaining agent, and is pressed into a cube nutrition block with the side length of 15cm-30 cm. The method for preparing the ecological restoration nutritive cube based on the sludge quality of the town sludge compost has the advantages that: the production method is simple, the nutrition block can be widely used as a matrix for ecological restoration and landscaping of saline-alkali soil, desertification land, abandoned mines and the like, and the nutrition block is prepared by taking sludge waste generated by sewage treatment as a main material, so that resource utilization of the sludge waste is realized.
Description
Technical Field
The invention relates to a method for preparing an ecological restoration nutritive cube based on sludge of town sludge compost, belonging to the field of resource utilization of solid waste.
Background
With the rapid development of economy, China faces more and more serious ecological environment problems. The problems of restoration and reconstruction of degraded ecosystems such as land desertification, salinization, mine wasteland and the like are urgently needed to be solved. Taking the problem of desertification as an example, the areas of the mild, moderate, severe and extremely severe desertification lands in China are respectively 26.11, 25.36, 33.35 and 87.29 km2The total area of the desertified land in China is 15.17 percent, 14.73 percent, 19.38 percent and 50.72 percent respectively. Serious land desertification threatens the sustainable development of ecological safety and economic society of China. At present, various treatment methods are provided for desertification, salinization and mining wasteland, and among them, green plant cultivation, namely phytoremediation, is one of the most effective methods. However, sandy land, saline-alkali land and mine waste land have the problems of nutrient deficiency, serious water seepage and the like, so that the greening cost is high, and large-area popularization is hindered.
Meanwhile, with the increasing importance of people on living environment, sewage treatment has become a necessary part in the urban construction process, the active sludge method is the mainstream process of sewage treatment at present, and dewatered sludge is solid waste generated in the urban sewage treatment process. The microbial biomass is complex in components, generally consists of a zoogloea formed by a plurality of microorganisms and an aggregate of organic matters and inorganic matters adsorbed by the zoogloea, contains nutrient elements such as nitrogen, phosphorus and organic matters, and also contains harmful substances such as heavy metals, pathogenic bacteria, parasitic ova and organic pollutants, and can cause serious environmental pollution due to improper treatment. How to effectively treat and utilize the sludge becomes an important challenge in the environmental protection field of China. At present, common sludge disposal methods include sanitary landfill, throwing into the sea, incineration and land utilization, wherein the sludge land utilization is considered as a disposal method with the most development potential, and is used for ecological restoration and reconstruction of lands such as degraded forest lands, grasslands, mine wastelands and the like, so that a way is provided for sludge treatment, and nutrient substances of sludge are fully utilized.
Before land utilization, the sludge is usually subjected to harmless treatment, so that the volume of the sludge is reduced, the sludge is convenient to transport and apply, and harmful substances such as heavy metals, pathogenic bacteria, organic pollutants and the like in the sludge are reduced and even removed. At present, aerobic composting treatment of sludge is one of the most common harmless sludge treatment methods due to the characteristics of economy, practicability, energy conservation, no secondary pollution and the like. Composting is to mix sludge and organic materials according to a certain proportion, decompose organic matters and kill pathogenic bacteria, parasitic ova and weed seeds under a certain condition by the high temperature generated by the action of microorganisms, so that the sludge is reduced and harmless. The compost can effectively remove the odor of the sludge, passivate heavy metals, kill pathogenic bacteria and parasitic ova, convert part of harmful organic matters into humus, and enable the nutrients of the humus to be absorbed and utilized by plants more easily. Therefore, the nutrient block prepared based on the sludge of the town sludge compost for ecological restoration of saline-alkali soil, desertification land and abandoned mine field is developed, can realize resource utilization of sludge waste, and has good economic benefit and social benefit.
Disclosure of Invention
The invention aims to provide an ecological restoration nutrition block prepared based on sludge quality of town sludge compost, which is developed by using sludge solid waste generated by town sewage treatment as a main material, can reduce and recycle sludge, can provide necessary nutrients for plant restoration and landscaping of saline-alkali soil, desertification land and abandoned mine field, and realizes resource utilization of sludge and ecological restoration of degraded land.
The invention is realized by the following technical scheme:
a method for preparing ecological restoration nutritive cube based on sludge of town sludge compost is characterized in that: the nutrient block comprises the following components in percentage by mass, wherein 95.0-96.0% of urban sludge subjected to biological composting treatment meets the main muddy materials of national standards GB/T24600-latest execution standard for sludge treatment and land improvement of urban sewage treatment plants and GB/T23486-latest execution standard for sludge treatment and landscaping of urban sewage treatment plants, 3.5-4.5% of binder and 0.5-1.0% of nutrient water-retaining agent are mixed and pressed into a cube of 15-30 cm.
The adhesive comprises the following components in percentage by mass: 65.0-68.0% of water, 14.0-17.0% of modified starch, 15.0% of bentonite, 2.0% of NaOH and 1.0% of phosphoric acid.
The nutritional water-retaining agent comprises the following components in percentage by mass: 50.0-52.0% of modified furfural residues, 45.0-47.0% of nutritional agent and 3.0% of polyacrylamide water-retaining agent.
Further, the ecological restoration nutrition block prepared based on the sludge of the town sludge compost is mainly used for planting arbors and shrubs with good drought resistance and cold resistance effects.
Further, the preparation method for preparing the ecological restoration nutrition block based on the sludge quality of the town sludge compost is carried out according to the following steps:
step 1:
selecting mud: selecting the sludge of a municipal sewage plant which is subjected to biological composting treatment and the quality of which meets the national standard of sludge GB/T24600-latest execution standard for sludge treatment and land improvement of municipal sewage plant and sludge GB/T23486-latest execution standard for sludge treatment and landscaping of municipal sewage plant;
step 2:
preparing a binder and a nutritional water-retaining agent: preparing an adhesive and a nutritional water-retaining agent according to the mass percentage composition of the adhesive and the mass percentage composition of the nutritional water-retaining agent;
and step 3:
mixing materials: according to the mass percentage composition of the ecological restoration nutrition block prepared based on the sludge of the town sludge compost, the sludge selected in the step 1 is fully and uniformly mixed with the binder and the nutritional water-retaining agent prepared in the step 2;
and 4, step 4:
briquetting: and (3) placing the material obtained in the step (3) into a mold, pressing the material by adopting the pressure of 0.1-0.2 MPa, wherein the compression ratio of the material is 1:2-1:2.5, the shape of the nutrition block is a cube with the side length of 15cm-30 cm, and placing the pressed nutrition block in a flat place for airing.
The invention has the advantages that: the method for preparing the ecological restoration nutritive cube based on the sludge quality of the sludge compost in the town has the following characteristics:
1. the method for preparing the ecological restoration nutritive cube based on the sludge quality of the town sludge compost is prepared by taking waste sludge generated by town sewage treatment as a main material, contains rich nutrient elements such as nitrogen, phosphorus, organic matters and the like, can provide energy for plant growth, and realizes resource utilization of wastes;
2. according to the method for preparing the ecological restoration nutritive cube based on the sludge of the town sludge compost, after watering or natural precipitation is carried out on the surface layer of the land of the restoration site, water can be stored due to the water-retaining agent, and water is provided for the growth of plants;
3. the method for preparing the ecological restoration nutritive cube based on the sludge of the town sludge compost is simple in production method and can be widely used as a matrix for plant restoration and landscaping of saline-alkali soil, desertification land and abandoned mines.
Therefore, the ecological restoration nutritive cube prepared based on the sludge quality of the sludge compost in cities and towns is a novel ecological restoration material for the ecological degraded land, which is environment-friendly and practical.
Detailed Description
Example 1
Sludge of the urban sewage treatment plant, the quality of which meets the national standard GB/T24600-latest execution standard for sludge treatment land improvement of urban sewage treatment plants and GB/T23486-latest execution standard for sludge treatment and landscaping of urban sewage treatment plants after biological high-temperature composting, is fully mixed with an adhesive and a nutritional water-retaining agent according to the following mass percentage ratios:
1. 95.0 percent of town sludge after biological composting treatment
2. 4.0 percent of binder
3. 1.0 percent of nutritional water-retaining agent
The adhesive is prepared from the following components in percentage by mass:
1. 67.0 percent of water
2. Modified starch 15.0%
3. 15.0 percent of bentonite
4、NaOH 2.0%
5. 1.0 percent of phosphoric acid
The nutritional water-retaining agent is prepared from the following components in percentage by mass:
1. 52.0 percent of modified furfural residues
2. 45.0 percent of universal plant nutrient
3. 3.0 percent of polyacrylamide water-retaining agent
The components are prepared into a cube nutrient block with the side length of 15cm, and the nutrient block is used for planting shrubs such as sea buckthorn, caragana microphylla, tiger hazelnut and the like with good drought resistance and cold resistance effects, and can be used for plant restoration of sandy land and saline-alkali soil or used as a matrix of landscaping tree species.
Further, the preparation method for preparing the ecological restoration nutrition block based on the sludge quality of the town sludge compost is carried out according to the following steps:
step 1:
selecting mud: selecting the sludge of a municipal sewage plant which is subjected to biological composting treatment and the quality of which meets the national standard of sludge GB/T24600-latest execution standard for sludge treatment and land improvement of municipal sewage plant and sludge GB/T23486-latest execution standard for sludge treatment and landscaping of municipal sewage plant;
step 2:
preparing a binder and a nutritional water-retaining agent: preparing an adhesive and a nutritional water-retaining agent according to the mass percentage composition of the adhesive and the mass percentage composition of the nutritional water-retaining agent;
and step 3:
mixing materials: according to the mass percentage composition of the ecological restoration nutrition block prepared based on the sludge of the town sludge compost, the sludge selected in the step 1 is fully and uniformly mixed with the binder and the nutritional water-retaining agent prepared in the step 2;
and 4, step 4:
briquetting: and (3) placing the material obtained in the step (3) in a mould, pressing the material by adopting the pressure of 0.15 MPa, wherein the compression ratio of the material is 1:2.2, the shape of the nutrition block is a cube with the side length of 15cm, and placing the pressed nutrition block in a flat place for airing.
Example 2
The invention is realized by the following technical scheme:
the ecological restoration nutritive cube is prepared based on sludge of town sludge compost for desertification land, abandoned mines and landscaping.
Sludge of the urban sewage treatment plant, the quality of which meets the national standard GB/T24600-latest execution standard for sludge treatment land improvement of urban sewage treatment plants and GB/T23486-latest execution standard for sludge treatment and landscaping of urban sewage treatment plants after biological high-temperature composting, is fully mixed with an adhesive and a nutritional water-retaining agent according to the following mass percentage ratios:
1. 96 percent of town sludge after biological composting treatment
2. 3.5 percent of binder
3. 0.5 percent of nutritional water-retaining agent
The adhesive is prepared from the following components in percentage by mass:
1. 68.0 percent of water
2. Modified starch 14.0%
3. 15.0 percent of bentonite
4、NaOH 2.0%
5. 1.0 percent of phosphoric acid
The nutritional water-retaining agent is prepared from the following components in percentage by mass:
1. 52.0 percent of modified furfural residues
2. 45.0 percent of universal plant nutrient
3. 3.0 percent of polyacrylamide water-retaining agent
Pressing the components into cube nutrition blocks with side length of 30cm, and planting drought-resistant and barren-resistant arbor and shrub such as Robinia pseudoacacia, Chinese pine, apricot tree, etc. to perform plant restoration of abandoned mines or as matrix of landscaping tree species.
Further, the preparation method for preparing the ecological restoration nutrition block based on the sludge quality of the town sludge compost is carried out according to the following steps:
step 1:
selecting mud: selecting the sludge of a municipal sewage plant which is subjected to biological composting treatment and the quality of which meets the national standard of sludge GB/T24600-latest execution standard for sludge treatment and land improvement of municipal sewage plant and sludge GB/T23486-latest execution standard for sludge treatment and landscaping of municipal sewage plant;
step 2:
preparing a binder and a nutritional water-retaining agent: preparing an adhesive and a nutritional water-retaining agent according to the mass percentage composition of the adhesive and the mass percentage composition of the nutritional water-retaining agent;
and step 3:
mixing materials: according to the mass percentage composition of the ecological restoration nutrition block prepared based on the sludge of the town sludge compost, the sludge selected in the step 1 is fully and uniformly mixed with the binder and the nutritional water-retaining agent prepared in the step 2;
and 4, step 4:
briquetting: and (3) placing the material obtained in the step (3) in a mould, pressing the material by adopting the pressure of 0.2MPa, wherein the material compression ratio is 1:2, and placing the pressed nutrition block in a flat place to be dried to obtain the nutrition block.
Claims (7)
1. A method for preparing an ecological restoration nutrition block based on sludge of town sludge compost is characterized in that the sludge after the biological composting of the sludge of the town is taken as a main material, mixed with an adhesive and a nutritional water-retaining agent and pressed into a cube nutrition block.
2. The method for preparing the ecological restoration nutritive cube based on the sludge quality of the town sludge compost as claimed in claim 1 is characterized in that: the ecological restoration nutritive cube prepared based on the sludge quality of the town sludge compost comprises the following components in percentage by mass: 95.0-96.0% of town sludge after biological composting, 3.5-4.5% of binder and 0.5-1.0% of nutritional water-retaining agent.
3. According to the claim 1, the main muddy material after the biological composting of the urban sludge is the muddy material of which the muddy quality after the biological composting of the sludge of the urban sewage treatment plant meets the national standard GB/T24600-latest execution standard for sludge treatment and land improvement of sludge treatment of the urban sewage treatment plant and GB/T23486-latest execution standard for sludge treatment and landscaping of sludge treatment of the urban sewage treatment plant.
4. The method for preparing the ecological restoration nutritive cube based on the sludge of the town sludge compost as per the claim 1 and the claim 2 is characterized in that: the adhesive comprises the following components in percentage by mass: 65.0-68.0% of water, 14.0-17.0% of modified starch, 15.0% of bentonite, 2.0% of NaOH and 1.0% of phosphoric acid.
5. The method for preparing the ecological restoration nutritive cube based on the sludge of the town sludge compost as per the claim 1 and the claim 2 is characterized in that: the nutritional water-retaining agent comprises the following components in percentage by mass: 50.0-52.0% of modified furfural residues, 45.0-47.0% of universal plant nutrient and 3.0% of polyacrylamide water-retaining agent.
6. The method for preparing the ecological restoration nutritive cube based on the sludge of the town sludge compost as per the claim 1 and the claim 2 is characterized in that: the preparation method comprises the following steps:
step 1:
selecting mud: selecting the sludge of a municipal sewage plant which is subjected to biological composting treatment and the quality of which meets the national standard of sludge GB/T24600-latest execution standard for sludge treatment and land improvement of municipal sewage plant and sludge GB/T23486-latest execution standard for sludge treatment and landscaping of municipal sewage plant;
step 2:
preparing a binder and a nutritional water-retaining agent: preparing an adhesive and a nutritional water-retaining agent according to the mass percentage composition of the adhesive and the mass percentage composition of the nutritional water-retaining agent of claims 3 and 4;
and step 3:
mixing materials: according to the claim 2, the mass percentage composition of the ecological restoration nutritive block prepared based on the sludge of the town sludge compost is that the sludge selected in the step 1 is fully mixed with the binder and the nutritional water-retaining agent prepared in the step 2;
and 4, step 4:
briquetting: and (3) placing the material obtained in the step (3) into a mold, pressing the material by adopting the pressure of 0.1-0.2 MPa, wherein the compression ratio of the material is 1:2-1:2.5, the shape of the nutrition block is a cube with the side length of 15cm-30 cm, and placing the pressed nutrition block in a flat place for airing.
7. The method for preparing the ecological restoration nutritive cube based on the sludge of the town sludge compost as per the claim 1 and the claim 2 is characterized in that: the ecological restoration nutritive cube prepared based on the sludge composting muddy quality of the cities and towns is mainly used for planting trees or shrubs with good drought resistance and cold resistance effects and used for ecological restoration and landscaping of saline-alkali soil, desertification land, abandoned mines and the like.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114853532A (en) * | 2022-05-13 | 2022-08-05 | 沈阳大学 | Plant growing bag prepared based on town sludge and use method thereof |
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| WO1985003071A1 (en) * | 1983-12-29 | 1985-07-18 | Innocap Aktiebolag | A plant nutrient product |
| CN103739344A (en) * | 2013-11-22 | 2014-04-23 | 北京矿冶研究总院 | Bottom layer spray-seeding base material containing fermented sludge and preparation method thereof |
| CN106699461A (en) * | 2017-01-06 | 2017-05-24 | 广州市新之地环保产业有限公司 | Compost material composition and composting method for preparing culture medium |
| CN108243650A (en) * | 2017-12-29 | 2018-07-06 | 同济大学 | It is a kind of that the multiple green method of abandoned mine is strengthened using stabilisation sludge |
| CN111602576A (en) * | 2019-02-22 | 2020-09-01 | 陈建君 | High-survival-rate plant culture medium for mountain greening and preparation method thereof |
-
2021
- 2021-04-15 CN CN202110403056.1A patent/CN113149757A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1985003071A1 (en) * | 1983-12-29 | 1985-07-18 | Innocap Aktiebolag | A plant nutrient product |
| CN103739344A (en) * | 2013-11-22 | 2014-04-23 | 北京矿冶研究总院 | Bottom layer spray-seeding base material containing fermented sludge and preparation method thereof |
| CN106699461A (en) * | 2017-01-06 | 2017-05-24 | 广州市新之地环保产业有限公司 | Compost material composition and composting method for preparing culture medium |
| CN108243650A (en) * | 2017-12-29 | 2018-07-06 | 同济大学 | It is a kind of that the multiple green method of abandoned mine is strengthened using stabilisation sludge |
| CN111602576A (en) * | 2019-02-22 | 2020-09-01 | 陈建君 | High-survival-rate plant culture medium for mountain greening and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114853532A (en) * | 2022-05-13 | 2022-08-05 | 沈阳大学 | Plant growing bag prepared based on town sludge and use method thereof |
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