CN1868930A - Method of producing polyacidic soil regulating agent using offscum in alkali manufacturing and city sludge - Google Patents
Method of producing polyacidic soil regulating agent using offscum in alkali manufacturing and city sludge Download PDFInfo
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- CN1868930A CN1868930A CNA2006100358074A CN200610035807A CN1868930A CN 1868930 A CN1868930 A CN 1868930A CN A2006100358074 A CNA2006100358074 A CN A2006100358074A CN 200610035807 A CN200610035807 A CN 200610035807A CN 1868930 A CN1868930 A CN 1868930A
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- waste residue
- soda
- municipal sludge
- manufacturing waste
- acid soil
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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Abstract
A process for preparing a multi-element acidic soil conditioning agent from the alkali dregs and city sludge includes such steps as adding calcium lime to city sludge for stabilizing and disinfecting it, modifying the alkali dregs by (NH4)2HPO4, mixing them together, stacking to obtain compost, drying and breaking.
Description
Technical field
The present invention relates to the environmental engineering technical field, relate in particular to a kind of method of handling soda-manufacturing waste residue and municipal sludge production acid soil conditioner simultaneously.
Technical background
Environment protection is a fundamental state policy of China, and along with the continuous quickening of expanding economy and urbanization process, town and country agriculture and industry wastes such as municipal sludge and soda-manufacturing waste residue are serious day by day to the pollution of environment.
Municipal sludge is the product after a series of treatment process of city domestic sewage process sewage work, is example with the Guangzhou, municipal sludge water content 75%～83%, organic matter 23.45%～57.09%, full N, P
2O
5, K
2O is respectively 2.10%～5.33%, 0.59%～5.32%, 0.15%～3.15%, pH5.6～8.8; Also contain various trace elements, and the heavy metal overwhelming majority all reaches the agricultural state control standard of mud.So agriculturalization of municipal sludge is the method for disposal of the most promising a kind of resource recovery.
The waste residue that the soda ash process industry produces is a kind of strong alkaline substance, handles the edatope of the mode severe contamination water body of this disposal soda-manufacturing waste residue or periphery usually in the mode that pours in the coastal waters or utilize discarded place to stack.So soda-manufacturing waste residue has become problem demanding prompt solution of basic industry.But then, being rich in multiple middle trace element such as Ca, Mg, K, Si, Zn, Mn in the soda-manufacturing waste residue, all is the essential nutritive element of plant, so agriculturalization of soda-manufacturing waste residue also is the new way of an effective trade waste resource recovery.
Though, there have been some to handle municipal sludge now, perhaps handle soda-manufacturing waste residue, make that it is innoxious, the technical measures of resource utilization aspect, but these technology are all paid attention to the individual curing municipal sludge, perhaps individual curing soda-manufacturing waste residue, and technological operation is complicated and cost is higher relatively.In addition, there is certain defective in the end product function singleness that these technology are used, can't provide simultaneously to improve the soil acidity and big or middle, trace element is provided.
China has 200,000 km approximately
2The pH of soil is lower than 5.0, and the soil slant acidity is damaged the saturating property of plasmalemma in the plant materials, the minimizing that causes crop that nutritive elements such as Ca, Mg, K are absorbed.Traditional way is to improve acid soil with lime, and liming is the improvement acid soil and eliminates the comparatively effective of aluminium poison and classic methods.But, single liming, water-soluble attitude potassium of soil and exchangeable potassium content decrease, and soil available phosphorus content descends along with the rising of soil pH value.A large amount of or long-term application lime not only can cause soil compaction and form " lime harden field ", and can cause the dysequilibrium of multiple elements such as soil calcium, potassium, magnesium and cause crop failure.Also may cause the co-precipitation of magnesium and aluminium hydrated oxide at the acid soil liming, reduce the Mg in the soil solution
2+Activity and plant availability.Behind the liming, magnesium is displaced and subjects to leaching loss under the field condition, causes the soil exchangeable Mg content to reduce.
Summary of the invention
The objective of the invention is to overcome the individual curing municipal sludge of prior art or the shortcoming that the soda-manufacturing waste residue aspect exists, a kind of environment-friendly high-efficiency is provided, can utilize municipal sludge and soda-manufacturing waste residue to produce the method for acid soil conditioner simultaneously.
For achieving the above object, the present invention has taked following technical scheme:
The municipal sludge that the present invention adopts meets " pollutent control criterion in the agricultural mud " (GB4284-84) for the dewatered sludge that life sewage work produces.Its soda-manufacturing waste residue that adopts is to be formed through rinsing, filtration by the waste residue that ammonia alkali legal system alkali produces.The subsidiary material that add are unslaked lime (CaO) or monoammonium phosphate (NH4)
2HPO
4
The inventive method schema as shown in Figure 1, step is described as follows:
1, municipal sludge adding unslaked lime (CaO) carries out stabilization and sanitisation processing, and a large amount of heats sterilizations and deodorizing are emitted in a large amount of moisture content and unslaked lime (CaO) reaction that utilize municipal sludge to contain.
The main chemical reactions principle is as follows:
Sweetening of the soil acidity:
2, soda-manufacturing waste residue monoammonium phosphate (NH4)
2HPO
4Carrying out modification handles.
3, the abundant mixing of soda-manufacturing waste residue handled of municipal sludge that step 1 stabilization and sanitisation were handled and step 2 modification carries out hybrid composting.Through aerobic compost, can reach the sewage sludge harmlessness processing requirements of regulation in " urban wastewater treatment firm pollutant emission standard ": water ratio (%)＜65; Worm egg mortality ratio (%)＞95, excrement colibacillus group bacterium value＞0.01.
After mud is handled through aerobic compost, pathogen reduction, organic humusization, heavy metal stabilization, plant can utilize the form nutrient to increase, and its C/N ratio, physical behavior, nothing poison degree, solubleness, nutrient balance etc. and all are greatly improved.The nitrogen of composting production, phosphorus, potassium total nutrient 〉=4%, organic content 〉=20%, heavy metal content is lower than agricultural standards, is the organic fertilizer of a kind of efficient, high-quality, safety, meets Ministry of Agriculture's standard " organic fertilizer " fully (NY525-2002).
4, mixed fertilizer is transferred out in-vessel composting system after finishing compost, after the block drying that delivers from godown, the crusher in crushing, pack polynary acid soil change the amendment product.
Municipal sludge and soda-manufacturing waste residue have become a kind of sophisticated product, and following advantage have been arranged after biochemical synthesis processing composting technology is carried out environmental protection treatment:
1, owing to added alkaline industrial waste, product is alkalescence, has very strong sweetening of the soil tart ability.Strong acid there is shock absorption, the negative impact that discharges plurality of heavy metal in the environment of strong acid is reduced greatly; The content of heavy metal also reduces in the unit volume, and oxide compound in the product and organism have adsorption to heavy metal and synthesize the chemical combination attitude and stabilized, the heavy metal content of solubility reduces, reduced the absorption of farm crop to heavy metal, can not pollute, so this technology is also having outstanding advantage aspect the processing heavy metal food chain and ecotope.
2, contain abundant organism, the release of nutrients such as control nitrogen, phosphorus.Land used is increased soil fertility combination, quick-acting long-acting having both.Product is effectively eliminated the life-time service chemical fertilizer to soil souring, negative impact such as harden.
3, it can be used as the agricultural interpolation fertilizer of mixing of fertilizer, promote the growth of farm crop, contain trace element among natural soil microorganism and Ca, Mg, Si, Fe, Mn, Cu, the Zn etc., but organic matter stable soil structure, improve the ability of Soil conservation moisture content and the ability of saturated draining greatly, strengthen the natural character of soil, comprise the conductivity and the degree of preserving moisture of water.The enhancing of drainage and degree of preserving moisture has greatly reduced the harm that heavy rain and arid cause crop growth.
4, no germ, stable, be easy to storage, be easy to handle and use.Be loose soil particle shape on the structure, transport, store, use all very convenient.Because of not needing mud to be carried out nuisanceless processing production cost extremely low (concrete cost is looked turn of the market) with outside heating method.Also can make different compound fertilizer, more effectively reduce production costs according to market demand.
Technical maturity of the present invention, less investment, working cost are low; Product again can the regulation domain soil acidity, and the control Soil structure is damaged, and provides various nutrient elements to crop simultaneously, and real the realization turned waste into wealth, turned harm into good.Be fit to the Scientific Outlook on Development and China's national situation.
Description of drawings
Fig. 1 is a schema of the present invention
Embodiment
Subsidiary material unslaked lime (CaO) is handled mud with weight ratio by 5%～10%, carries out the process of mud alkaline stabilisation.Reaction needed water, and mud contains the moisture content of a large amount of water 75～83%, can be used as the source of raw water.Exothermic heat of reaction makes system's local temperature reach 90～105 ℃, and temperature maintenance is at 52～70 ℃ behind the abundant stirring and evenly mixing.Make sludge treating system be in the strong basicity environment of pH 〉=12, and keep minimum 3 day time, a large amount of heat energy that utilize strong basicity lime to emit are killed pathogenic agent and parasite, reduction stench and heavy metal-passivated.Soda-manufacturing waste residue adds properties-correcting agent monoammonium phosphate (NH4) with weight ratio by 10%～22%
2HPO
4, the soda-manufacturing waste residue of innoxious municipal sludge and modification material in in-vessel composting system is stopped carried out aerobic compost in 10-14 days then.The composting process oxygen-supplying amount is wanted suitably to be generally 0.1～0.2m
3/ m
3.min, the oxygen supply mode is by forced ventilation, therefore keeps the certain voidage of storeroom very important, and material particles makes voidage reduce too greatly, and too little its structural strength of particle is little, in case pressurized can topple over compression and cause actual space to reduce.Therefore granular size is wanted suitably to be decided by the material composition and property.The moisture content of composting material is controlled at 40～50% and is advisable; The suitable C/N ratio of composting process is 20～30; The C/P ratio is 75～150.
Finish compost, transfer out in-vessel composting system.After the block drying that delivers from godown, the crusher in crushing, the pack polynary acid soil change the amendment product; Its major ingredient of product is an organic matter 18～31%, P, N, K
2O=4～7% is mainly used in the acidity of improving the soil, provides organic nutrient with structure and multiple big or middle, the trace element etc. of improving the soil.
If send nutrient substance thorough mixing such as smart mixed machine and N, P, K even.When water ratio reaches 18-22%, send into the high pressure tablets press, under high pressure and 60 ℃ of temperature condition, mixture is made evenly, harder particle, after the pneumatic drier drying, treat pin by putting in storage after the sack packer quantitative package.Granular compound fertilizer, its major ingredient are organic matter 15%～20%, P, N, K
2O 〉=25% is mainly used in the field crop plantation, and product meets the GB15063-94 national standard.
The polynary acid soil that adopts present embodiment to prepare changes amendment and obtains data shown in table 1, table 2 through experiment:
The physicochemical character analytical results of table 1 acid soil conditioner product
| pH | Organic (%) | N (％) | P 2O5 (％) | K 2O (％) | CaO (％) | MgO (％) | SiO 2 (％) | Proportion (g/cm 3) | Moisture content (%) | Humic acid (%) |
| 11.9 | 26 | 1.2 | 0.9 | 2.0 | 37.5 | 2.5 | 1.08 | 1.5 | 16 | 10.8 |
The test effect of table 2 acid soil conditioner on tomato and paddy rice
| Crop | Handle (waiting nutrient) | Soil pH value | The soil organism (%) | Volume increase (%) | ||
| The slash | Contrast improves | The slash | Contrast increases | |||
| Tomato | Special-purpose fertile | 4.8 | — | 1.9 | — | — |
| Special-purpose fertilizer+50kg/ mu amendment | 6.1 | 1.3 | 2.3 | 0.4 | 11.2 | |
| Paddy rice | Special-purpose fertile | 5.1 | — | 1.7 | — | — |
| Special-purpose fertilizer+50kg/ mu amendment | 5.8 | 0.7 | 2.2 | 0.5 | 7.8 | |
Claims (5)
1, a kind of method of utilizing soda-manufacturing waste residue and municipal sludge to produce acid soil conditioner, step is as follows:
(1) municipal sludge adding unslaked lime carries out stabilization and sanitisation processing, and a large amount of heats sterilizations and deodorizing are emitted in a large amount of moisture content and the unslaked lime reaction that utilize municipal sludge to contain;
(2) soda-manufacturing waste residue monoammonium phosphate (NH4)
2HPO
4Carrying out modification handles;
(3) the abundant mixing of soda-manufacturing waste residue handled of municipal sludge that step (1) stabilization and sanitisation were handled and step (2) modification carries out hybrid composting;
(4) mixed fertilizer is transferred out in-vessel composting system after finishing compost, after the block drying that delivers from godown, the crusher in crushing, pack polynary acid soil change the amendment product.
2, the method for utilizing soda-manufacturing waste residue and municipal sludge to produce acid soil conditioner as claimed in claim 1, it is characterized in that: the unslaked lime that adds in the step (1) is 5%～10% of mud weight ratio.
3, the method for utilizing soda-manufacturing waste residue and municipal sludge to produce acid soil conditioner as claimed in claim 1, it is characterized in that: soda-manufacturing waste residue adds properties-correcting agent monoammonium phosphate (NH4) with weight ratio by 10%～22% in the step (2)
2HPO
4
4, the method for utilizing soda-manufacturing waste residue and municipal sludge to produce acid soil conditioner as claimed in claim 1, it is characterized in that: the time of hybrid composting is more than at least three days in the step (3).
5, as the described method of utilizing soda-manufacturing waste residue and municipal sludge to produce acid soil conditioner of one of claim 1 to 4, it is characterized in that: hybrid composting process oxygen-supplying amount is 0.1～0.2m in the step (3)
3/ m
3.min, the moisture content of hybrid composting raw material is controlled at 40～50%; The C/N ratio of composting process is 20～30; The C/P ratio is 75～150.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100358074A CN1868930A (en) | 2006-06-06 | 2006-06-06 | Method of producing polyacidic soil regulating agent using offscum in alkali manufacturing and city sludge |
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|---|---|---|---|
| CNA2006100358074A CN1868930A (en) | 2006-06-06 | 2006-06-06 | Method of producing polyacidic soil regulating agent using offscum in alkali manufacturing and city sludge |
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|---|---|
| CN1868930A true CN1868930A (en) | 2006-11-29 |
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|---|---|---|---|
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101544890B (en) * | 2009-05-05 | 2010-10-13 | 广东省农业科学院土壤肥料研究所 | A fertility-betterment type soil-conditioner and the preparation method thereof |
| CN101781568B (en) * | 2010-02-03 | 2011-08-31 | 北京海亚地大生化科技有限公司 | Soil conditioner, preparation method and application thereof |
| CN101367678B (en) * | 2008-09-27 | 2011-09-21 | 哈尔滨工业大学 | Uses of amendment in sludge composting |
| CN102731200A (en) * | 2012-06-11 | 2012-10-17 | 湖北大学 | Method for preparing economic crop growth-promoting agent by using protein peptide, and growth-promoting agent application method |
| CN103160285A (en) * | 2013-03-29 | 2013-06-19 | 广东大众农业科技股份有限公司 | Method for producing soil conditionert by utilizing subparticles in thick weather |
| CN103387437A (en) * | 2013-07-31 | 2013-11-13 | 常熟市常福有机复合肥有限公司 | Alkalescent mineral organic fertilizer |
| CN106171792A (en) * | 2016-08-05 | 2016-12-07 | 汉中市农业科学研究所（陕西省水稻研究所） | A kind of method of kiwi fruit tree garden interplanting Stropharia rugoso-annulata |
| CN109574447A (en) * | 2018-12-25 | 2019-04-05 | 重庆大学 | A kind of static treatment method of alkaline scrap material and municipal sludge reciprocation synchronism stability |
| CN109954747A (en) * | 2019-04-25 | 2019-07-02 | 广东春天生态科技集团有限公司 | A method of the rubbish containing iron and wood is decomposed using biological mud |
| CN109970471A (en) * | 2019-04-15 | 2019-07-05 | 上海交通大学 | A kind of method of nitrogen loss during reduction urban sewage sludge compost |
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- 2006-06-06 CN CNA2006100358074A patent/CN1868930A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367678B (en) * | 2008-09-27 | 2011-09-21 | 哈尔滨工业大学 | Uses of amendment in sludge composting |
| CN101544890B (en) * | 2009-05-05 | 2010-10-13 | 广东省农业科学院土壤肥料研究所 | A fertility-betterment type soil-conditioner and the preparation method thereof |
| CN101781568B (en) * | 2010-02-03 | 2011-08-31 | 北京海亚地大生化科技有限公司 | Soil conditioner, preparation method and application thereof |
| CN102731200B (en) * | 2012-06-11 | 2015-02-04 | 湖北大学 | Method for preparing economic crop growth-promoting agent by using protein peptide, and growth-promoting agent application method |
| CN102731200A (en) * | 2012-06-11 | 2012-10-17 | 湖北大学 | Method for preparing economic crop growth-promoting agent by using protein peptide, and growth-promoting agent application method |
| CN103160285A (en) * | 2013-03-29 | 2013-06-19 | 广东大众农业科技股份有限公司 | Method for producing soil conditionert by utilizing subparticles in thick weather |
| CN103160285B (en) * | 2013-03-29 | 2015-09-02 | 广东大众农业科技股份有限公司 | A kind of method utilizing the subparticle in thick weather to produce soil conditioner |
| CN103387437A (en) * | 2013-07-31 | 2013-11-13 | 常熟市常福有机复合肥有限公司 | Alkalescent mineral organic fertilizer |
| CN106171792A (en) * | 2016-08-05 | 2016-12-07 | 汉中市农业科学研究所（陕西省水稻研究所） | A kind of method of kiwi fruit tree garden interplanting Stropharia rugoso-annulata |
| CN109574447A (en) * | 2018-12-25 | 2019-04-05 | 重庆大学 | A kind of static treatment method of alkaline scrap material and municipal sludge reciprocation synchronism stability |
| CN109970471A (en) * | 2019-04-15 | 2019-07-05 | 上海交通大学 | A kind of method of nitrogen loss during reduction urban sewage sludge compost |
| CN109954747A (en) * | 2019-04-25 | 2019-07-02 | 广东春天生态科技集团有限公司 | A method of the rubbish containing iron and wood is decomposed using biological mud |
| CN109954747B (en) * | 2019-04-25 | 2022-04-22 | 广东春天生态科技集团有限公司 | Method for decomposing garbage containing iron and wood by using biological mud |
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