CN105233793A - Method for purifying waste water by utilizing crop straw ash - Google Patents
Method for purifying waste water by utilizing crop straw ash Download PDFInfo
- Publication number
- CN105233793A CN105233793A CN201510677488.6A CN201510677488A CN105233793A CN 105233793 A CN105233793 A CN 105233793A CN 201510677488 A CN201510677488 A CN 201510677488A CN 105233793 A CN105233793 A CN 105233793A
- Authority
- CN
- China
- Prior art keywords
- straw
- crop straw
- stalk
- ash
- agricultural crop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
-
- 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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Landscapes
- Fertilizers (AREA)
Abstract
The invention discloses a method for purifying waste water by utilizing crop straw ash. After crop straw is collected in a compensated mode, the crop straw is concentrated and smashed through a straw pulverizer, so that the crop straw can be fully combusted. After the crop straw is smashed, the smashed straw undergoes compression forming through a compressor, so that the storage space can be reduced to facilitate transportation and storage, and material adding is facilitated during combustion. The crop straw having undergone the compression forming is incinerated in an incinerator, the incineration temperature is controlled to be 600-1000 DEG C, heat generated through incineration can be utilized in other ways, e.g., for power generation or heating for residents, so that solar energy in the crop straw can be utilized fully, and obtained ash is collected after the incineration.
Description
Technical field
The present invention relates to biological material to use and waste water treatment field, particularly a kind of method utilizing agricultural crop straw lime-ash to purify liquid waste.
Background technology
China is stalk big producing country. agricultural crop straw more than 600,000,000 ton can be produced every year old. and traditional agriculture and simple reproduction are only make a fire to cook, raise livestock, build a house, warm oneself and infertile field etc. to the utilization of stalk, along with the development of modern agriculture and modern processing. and start for the aspect such as industrial fuel and feed.But.Stalk also will continue significant period of time as the main domestic energy in rural area.Therefore, fully realize China's straw from village as the current condition of consumption of the energy and provide prediction, have very important meaning for China's rural development.
There are following three main development directions as the technology that utilizes of the energy in current stalk: straw solidification, liquefaction of corn straw, gasifying stalk.
1, agricultural crop straw is utilized to produce the technology of alcohol or light fuel.External a lot of country has carried out large quantity research in this respect, and Brazil produces in alcohol at renewable physical resources and is in world's rank of advanced units.
2, crops gasification technology.American Studies goes out stalk two-step fermentation technique, substantially increases the factor of created gase of biogas fermentation device.EU countries establishes more than 600 big-and-middle-sized biogas engineering. and wherein the overwhelming majority can be used for stalk generation biogas.
3, biomass compact forming and the charring process such as stalk.The factory that 9 production capacity are 250t/ days is had in the U.S..Separately there are 16 states to build to have a daily output of the bark shaped fuel processing factory of 300t.Family more than 30 of biomass granule fuel factory is had in the European countries such as Italy, Denmark, France, Germany, Sweden, Switzerland.Family of mechanical stamping formula shaped fuel factory more than 40.China has also carried out large quantifier elimination in this field, but extension process is not smooth.Be mainly manifested in and utilize technology also immature, high cost.Cannot promote on a large scale in rural area.If following relevant straw utilization technology makes substantial progress. China's straw from village consumption will significantly improve.
General agricultural crop straw all has the shortcomings such as loose, density is little, unit volume is large, calorific value is low, be used for as fuel that generating independently need be transported, stores, shredded, conveying equipment, this is also current domestic built or need the reason of Introduced From Abroad special equipment at many straw electric generation plants of founding a capital.Existing coal-fired electric generation furnace is not used, one-time investment is greatly its restraining factors.Stalk forming technology can not only address this problem effectively, and effectively can change the burning feature of stalk.Stalk forming technology refers under certain condition, loose straw extrusion in small, broken bits is become the shaped fuel of quality densification, regular shape.Energy density and middle matter coal facies are worked as.Compared to fragmentary shape stalk, compressed shaping after straw briquette fuel, combustion characteristics is raw obviously to be improved, and volatilization is few, and black smoke is few, and firepower is lasting, and fire box temperature is high; Directly can utilize electric power plant coal transportation, coal supply equipment, without the need to double fuel supply system; For shelf-stable, transport, easy to use.Straw Briquette Combustion Velocity is faster than coal, and the discharge of dust and other indexs is all low than coal.Denmark has built the multi fuel mode power plant of coal combustion, oil, natural gas and stalk particle in same body of heater.China has certain Research foundation in shaping stalk fuel exploitation, but large-scale industrialized straw briquette fuel production technology and eqUipment, and replace in the operation technique of coal fired power generation still blank in existing coal-burning power plant with straw briquette fuel.Shaped fuel has graininess and bar-shaped two large classes.According to the difference of shaping main technique feature, the technique of producing both at home and abroad biomass compression fuel roughly can be divided into wet pressing (colding pressing) shaping, hot-forming, carbonize shaping etc. 3 kinds.Distinguish by the method difference of shaping pressurization, technology is comparatively ripe, apply more shaped fuel processing machine roller die squash type (comprise ring mode and flat-die type powdered), piston punching type (comprising mechanical type, fluid pressure type), spiral squeezing type etc., wherein the shaping employing of roller die squash type is wet pressing (colding pressing) moulding process, and piston punching type, spiral squeezing type forming machine all adopt hot press forming technology.
The phenomenons such as the delay that little paper mill causes the pollution of Basin of Huaihe River, crop straw burning causes flight and the closedown of highway cause people to the extensive concern of the crop material utilization of resources.Crop material, as the important byproduct of agricultural, is the valuable source of agricultural and downstream industry, has again the possibility becoming Ecological Environment pollution sources.It plays the part of subject and object dual role in agriculture production environment.As important agricultural byproducts in plant husbandry production process; In Agro-ecological System, being the important composition of Agro-ecological System, is again the important step that Agro-ecological System can flow logistics; In agricultural and related industry, it is the important substance resource of agricultural downstream industry.But along with improving constantly of agricultural science and technology level, agriculture fast development, there is the change of matter from kind and output in crop material, and straw utilization technological lag, superfluous stalk is becoming the non-point pollution source in agroecological environment.
For a long time, crop material is defined as agriculture auxiliary product, causes having some limitations crop material the Study on Resources, what be mainly manifested in crop material calculation of natural resources is incomprehensive.Utilize the estimation of aspect from animal husbandry domestic animal or lacked domestic animal and can not utilize part; And the estimation of ecological environmental protection aspect is just analyzed from particular surroundings contamination phenomenon, what lack crop material type equally is comprehensive, and has the possibility of partial enlargement.
Due to the difference of different regions weather conditions, Social Culture, traditional habit, the crop material structure composition of each department is different.In tropical, the semi-tropical south of the River, rice is the Main Foods of local masses' traditional food, and paddy rice becomes the most important crop varieties in this area; Be located in the northern area of China in temperate zone, wheat, corn are the chief crops of local plantation; And being positioned at the Tibet of extremely frigid zones, the Tibetan masses get used to, based on barley wine, Tibetan's cooking culture of hiding cake, defining the distinctive pattern of farming based on highland barley in Tibet.Different patterns of farming, brings the difference of crop material kind and type structure between each department.The Northeast (Heilungkiang) is based on corn and soybean, in North China (Hebei) based on cornstalk and straw, in East China (Jiangsu) based on straw and straw, in south China (Guangdong) based on straw and sugarcane, in northwest (Xinjiang) based on cornstalk, straw and cotton.
Although China's crop material resource is numerous, owning amount only about 600kg per capita.And China's crop material is still in loose utilization state, even some areas are due to straw utilization technology imperfection, sometimes have little time to utilize and process, occur temporary transient surplus and by on-site incineration, cause a large amount of waste of crop material resource and pollution is brought to ecological environment.In order to abundant efficiency utilization China crop material resource; should around ecological agriculture sustainable development and Agriculture Ecological Environment Protection two basic points; what adjust crop material utilizes structure; strengthen the research and extension that crop material utilizes technology; expand straw utilization channel, promote effective utilization of China's crop material resource.
1, accelerate rural energy construction, carry out alternative crop material with the new energy, reduce crop material burning utilization as far as possible.The research and extension of energy-saving stove should be strengthened simultaneously, improve the efficiency of crop material.Accelerate the research and extension of crop material biomass energy process and utilization technology.As the gasification technology of crop material, carry out the development and utilization of crop material gasification gas; Carry out the research of crop material fuel process technology, as the process technology of crop material fuel slug and forming charcoal block, promote that crop material biomass energy develops to commercialization.
2, the research and extension of the organic also field technology of crop material resource is accelerated, crop material direct returning to farmland technology and no-tillage with straw mulch technology is widelyd popularize in conjunction with mechanization of agriculture, formulate the technical regulation of Returning Application of Crop Straw, avoid the waste in excessive also field, and go back the improper environment negative interaction brought in field.Accelerate the research and extension of crop material and chemical fertilizer Fertilizers technology, improve Returning Application of Crop Straw efficiency, reduce the environmental pollution that the excessive use of chemical fertilizer brings.Carry out and do the industrialized research of stalk fertilizer.
3, some technology of existing maturation should actively be promoted at crop material feed development technical elements, as straw ammoniation technology, alkalization technology, microbial fermentation technology, Sativa Silage Technology etc.; Meanwhile, the research of crop material fodder new technology is strengthened.
4, strengthen the research and extension of crop material comprehensive utilization technique energetically, use stalk to make soilless culture raw material, the multi-level utilization of development stalk, promote crushed stalk culturing edible fungus, bacterium slag feeds pigs, and pig manure fermentation produces biogas, biogas residue and biogas liquid infertile field technology, forms the multi-level utilization of crop material.
5, the research of the post-processing technology of crop material papermaking is strengthened.Crop material pulping and paper-making is that China utilizes one of stalk resource comparatively ripe technology, but the black liquor after slurrying brings serious pollution to environment, answers Study on Acceleration to the wastewater processing technology after slurrying.As utilized the sugared ore pulp process crop material producing fodder after slurrying, nutritional labeling and the palatability of stalk can be improved.
Summary of the invention
For the sewage pollution on the environment problem of China's mining, metallurgical and life, the object of the invention is to propose a kind of method utilizing agricultural crop straw lime-ash to purify liquid waste, thus agricultural crop straw is fully utilized, avoid the wasting of resources, can easily utilize again the lime-ash after its burning to purify liquid waste efficiently simultaneously, preparation method is simple and easy to do, successful of purifying liquid waste, and method is beneficial to be promoted.
For reaching this object, the present invention by the following technical solutions:
The method utilizing agricultural crop straw lime-ash to purify liquid waste, comprising: agricultural crop straw (Wheat Straw, straw, soybean stalk, cornstalk etc.), stalk crasher, compressor, incinerator.
After agriculture is received, a large amount of agricultural crop straw heap is abandoned in farmland, except seldom part is utilized, most stalk combustion (of oil) insitu, both polluted environment, and waste is unfortunately stored in the energy in stalk again, simultaneously farmland fertilizer also scorches owing to being subject to high temperature and running off in a large number, cause arable land to harden, soil property worsens, and then forms vicious circle.So, after collecting agricultural crop straw with compensation, agricultural crop straw is put together, with stalk crasher, agricultural crop straw is pulverized, with make it burning time can Thorough combustion.After pulverizing, with compressor powder of straw being minced and carry out compression forming, can storage area be reduced like this, be convenient to transport, deposit, contributing to filling when burning.The agricultural crop straw of compression forming is burned in incinerator, incineration temperature controls at (600 DEG C ~ 1000 DEG C), burn the heat produced to be utilized by other approach, generate electricity as carried out or resident's heating, be fully utilized to make the solar energy in agricultural crop straw, after burning, collect the lime-ash obtained.
Detailed description of the invention
Technical scheme of the present invention is further illustrated below by detailed description of the invention.
Embodiment 1
Agricultural crop straw is put together, with stalk crasher, agricultural crop straw is pulverized, with make it burning time can Thorough combustion.After pulverizing, with compressor powder of straw being minced and carry out compression forming, can storage area be reduced like this, be convenient to transport, deposit, contributing to filling when burning.The agricultural crop straw of compression forming is burned in incinerator, incineration temperature controls at 600 DEG C ~ 1000 DEG C, burn the heat produced to be utilized by other approach, generate electricity as carried out or resident's heating, be fully utilized to make the solar energy in agricultural crop straw, after burning, collect the lime-ash obtained.
A certain amount of stalk ash is put into the water source containing heavy-metal pollution, temperature controls in room temperature, gyratory shaker is utilized to stir, stir 5 hours, then utilize the filter membrane of 0.3 μm to be separated with solution by the agricultural crop straw lime-ash be dispersed in sewage, can be calculated by ion concentrations versus in the solution before and after absorption by the capacity of heavy metal ion in the solution that adsorbs.
Waste material after stalk process, as the application of Crop fertilizer, is characterized in that after heavy metal filters, and obtains organic environmental-protection fertilizer after residue fermentation.
Embodiment 2
Get a certain amount of sanitary sewage, the color and luster of naked eyes direct vision solution and transparency situation, and by the content of organics in Instrumental Analysis sanitary wastewater, a certain amount of agricultural crop straw lime-ash is put into sanitary sewage, temperature controls in room temperature, stir with gyratory shaker, stir 5 hours, then the filter membrane of 0.3 μm is utilized to be separated with solution by the agricultural crop straw lime-ash be dispersed in sewage, be separated color and luster and the transparency situation of rear naked eyes direct vision solution, can be calculated by organic matter concentrations versus in the solution before and after absorption by organic capacity in the solution that adsorbs.
Waste material after stalk process, as the application of Crop fertilizer, is characterized in that after heavy metal filters, and obtains organic environmental-protection fertilizer after residue fermentation.
Claims (5)
1. the method utilizing agricultural crop straw lime-ash to purify liquid waste, comprise: agricultural crop straw (Wheat Straw, straw, soybean stalk, cornstalk etc.), stalk crasher, compressor, incinerator, to it is characterized in that, the agricultural crop straw of collection is pulverized by stalk crasher.
2. a kind of method utilizing agricultural crop straw lime-ash to purify liquid waste according to claim 1, is characterized in that, the agricultural crop straw compression forming after pulverizing, in incinerator, wait until stalk ash after burning.
3. a kind of method utilizing agricultural crop straw lime-ash to purify liquid waste according to claim 1, is characterized in that, the heat burning burning can be used for generating and resident's heating equipment.
4. a kind of method utilizing agricultural crop straw lime-ash to purify liquid waste according to claim 1, it is characterized in that, incineration temperature controls at 600 DEG C ~ 1000 DEG C.
5. utilize the waste material after the stalk process of one of claim 1-4 as an application for Crop fertilizer, it is characterized in that after heavy metal filters, after residue fermentation, obtain organic environmental-protection fertilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510677488.6A CN105233793A (en) | 2015-10-19 | 2015-10-19 | Method for purifying waste water by utilizing crop straw ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510677488.6A CN105233793A (en) | 2015-10-19 | 2015-10-19 | Method for purifying waste water by utilizing crop straw ash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105233793A true CN105233793A (en) | 2016-01-13 |
Family
ID=55031764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510677488.6A Pending CN105233793A (en) | 2015-10-19 | 2015-10-19 | Method for purifying waste water by utilizing crop straw ash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105233793A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03183A (en) * | 1989-05-26 | 1991-01-07 | Chugoku Electric Power Co Inc:The | Method for removing cod by use of coal ash |
| CN1793074A (en) * | 2005-11-21 | 2006-06-28 | 江苏省农业科学院 | Process for producing multielement fertilizer by plant straw ash |
| CN1888534A (en) * | 2006-07-19 | 2007-01-03 | 天津泰达环保有限公司 | Method for electric generating utilizing stalks mixed burned with city life refuses |
-
2015
- 2015-10-19 CN CN201510677488.6A patent/CN105233793A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03183A (en) * | 1989-05-26 | 1991-01-07 | Chugoku Electric Power Co Inc:The | Method for removing cod by use of coal ash |
| CN1793074A (en) * | 2005-11-21 | 2006-06-28 | 江苏省农业科学院 | Process for producing multielement fertilizer by plant straw ash |
| CN1888534A (en) * | 2006-07-19 | 2007-01-03 | 天津泰达环保有限公司 | Method for electric generating utilizing stalks mixed burned with city life refuses |
Non-Patent Citations (1)
| Title |
|---|
| 黄容等: "不同生物质灰渣对磷的吸附解吸动力学特征", 《水土保持学报》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Junfeng et al. | Assessment of sustainable energy potential of non-plantation biomass resources in China | |
| Zeng et al. | Utilization of straw in biomass energy in China | |
| Aremu et al. | Enhanced biogas production from poultry droppings using corn-cob and waste paper as co-substrate | |
| CN102603383B (en) | Production equipment and preparation method of slow-release bio-organic fertilizer | |
| CN102942978B (en) | Manufacturing method of sludge biomass fuel | |
| CN101307266A (en) | Biomass solid fuel and processing method | |
| CN101831337B (en) | Process technique for producing crop straw fuel | |
| Lin | The development and prospective of bioenergy technology in China | |
| CN104086238A (en) | Preparation method of biogas residue organic fertilizer employing biochar as carrier | |
| CN104974812A (en) | Method for producing clean coal (carbon) spheres by using municipal sludge and agricultural wastes | |
| CN104230401A (en) | Treatment method of kitchen garbage | |
| CN107586805A (en) | Comprehensively utilize five joint production process of biological straw | |
| Nsubuga et al. | Potential of jackfruit waste for biogas, briquettes and as a carbondioxide sink-a review | |
| CN103352056B (en) | Peat is the method that raw material prepares biogas, yellow humic acid coproduction organic fertilizer | |
| CN109721435A (en) | A kind of production system and method for charcoal base compound organic and inorganic fertilizer | |
| Shyam | Agro-residue-based renewable energy technologies for rural development | |
| CN106701233A (en) | Straw biogas residue biomass coal briquette and preparation method thereof | |
| CN102643693A (en) | Process for producing biogas by utilizing methane-straw gas coproduction device | |
| CN109912144A (en) | A method of kitchen garbage biogas project biogas residue is dissolved using blattaria | |
| CN105600751B (en) | Biogas fermentation waste liquid combines meager coal into the common gasification system of slurry | |
| CN104761383A (en) | Method for preparing organic bacterial manure from biological carbon produced by dry distillation of organic matter wastes | |
| CN108641771A (en) | A kind of pecan biological particles | |
| CN105233793A (en) | Method for purifying waste water by utilizing crop straw ash | |
| CN108034472A (en) | A kind of pecan biological particles | |
| CN104745263B (en) | A kind of preparation method of biomass molding fuel coproduction high humic acid organic fertilizer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160113 |