Background technology
In order to improve the water quality in lake, river; Guarantee the unimpeded of normal flood carrying capacity in river course and navigation channel, harbour, China has carried out large-scale dredging and desilting engineering, according to statistics; About 6700 ten thousand steres of Taihu Lake bed mud ecological dredging amount only; About 8000 ten thousand steres of Delta of the Pearl River area dredging silt amount, still will produce a large amount of dredging silt in water conservancy, lake, river and port dredging and the desilting engineering 10 years futures, become the reality that is difficult to avoid.
The dredging silt that produces in the dredging engineering adopts the method for stacking or abandoning to handle usually; Not only cause the waste of a large amount of land resourcess on the one hand; Will cause irremediable destruction to ecotope; On the other hand, dredging silt contains heavy metal, organic pollutant mostly, will inevitably cause secondary pollution to surrounding enviroment.
Because the dredging silt water cut that harbour, navigation channel, lake and river etc. produce is high and be difficult for dehydration, clay particle is many, and intensity is low; Volume is big, has brought many rough sledding for transportation, storage and the use of mud, can not find appropriate processing mode again they are settled; So, have only dredging silt is connected mud band water to deliver to the Refuse bin together, to treat its natural weathering; This treatment process is contaminate environment both, causes huge a, unnecessary spending to government again.
Because edible fungi residue can not directly be used for fertilising; Also often be mixed with a certain amount of derosal soup; Mouldy in a large number, blackout, acid are smelly and receive the bacterium slag of living contaminants arbitrarily to be deposited in field, highway both sides or two sides, river, cause the environment of traffic jam and polluted air, soil and river.
Chinese patent Granted publication CN 101485282 B; At on 04 06th, 2011 Granted publication day; Name is called " ecological protection greening substrate for rock slope "; Disclose a kind of ecological protection greening substrate for rock slope, be prepared from the mixture of mixed fermentations such as stalk, cow dung, edible fungi residues, mud and organic fiber and composite fertilizer, water-loss reducer of soil, sticker, attapulgite, soil disinfectant, PH regulator uniform mixing.
The weak point of above-mentioned patent is: mixed fermentations such as the stalk of being selected for use in " ecological protection greening substrate for rock slope ", cow dung, edible fungi residues, mud and organic fiber, can not reach the effect of fully fermenting and sterilization, and production cost is higher; Though attapulgite can play the effect of caking agent, not all attapulgite can both play the effect of caking agent, has only the higher attapulgite clay powder of viscosity under well-beaten condition, just can play the effect of caking agent.
Summary of the invention
The objective of the invention is to overcome weak point in the prior art, a kind of method of utilizing lake silt to produce ecological, environmental protective nutrition soil is provided.
Utilize lake silt to produce the method for ecological, environmental protective nutrition soil: the batching of ecological, environmental protective nutrition soil to be added in the biaxial rneader jointly stir; Be transported to through rotary conveyor after stirring and be squeezed into irregular particle in the twin rollers; Irregular particle being imported in the integrated soil disinfection insect-killing device again and carried out sterilizing pesticide and oven dry, is the finished product of ecological environmental protection nutritive soil through the irregular particle after sterilizing pesticide and the oven dry.
Edible fungi residue, ferrous sulfate, zinc sulfate, ammonium molybdate, copper sulfate, borax and manganous sulfate after the feces of livestock and poultry of ecological, environmental protective nutrition soil after by lake silt, flyash, high sticking attapulgite clay powder, bentonite in powder, High hydrophilous resin, fermentation, edible fungi residue, the carbonization are formed.
Lake silt is the mud that dredging harbour, navigation channel, lake and river etc. produce; Contain elements such as a large amount of nitrogen, phosphorus, potassium in the lake silt; Its content surpasses general soil; And these elements necessary for plant growth nutrition just, the present invention selects for use water ratio greater than 75% lake silt.
Flyash is made up of xln, vitreum and a small amount of unburnt carbon granules, and flyash can improve the structure of ecological, environmental protective nutrition soil, reduces unit weight; Increase voidage, improve ground temperature, dwindle rate of expansion; For glutinous, heavy, plate and acid soil good improving effect is arranged, and help the soil moisturizing soil moisture conservation, water, fertilizer, gas, heat trend are coordinated; Flyash itself contains the available nutritive ingredient of various plants, for good edatope has been created in plant-growth.
Attapulgite clay be a kind of layer of chain-like structure contain Shuifu County's zeopan clay mineral, high sticking attapulgite clay soil property is fine and smooth, water-absorbent is strong; Higher viscosity and the plasticity-of tool when wet; Help the bonding between the ecological, environmental protective nutrition soil raw material, and can adsorb heavy metal ion and the carcinogenic substance in the ecological, environmental protective nutrition soil, but also deodorizing eliminates the unusual smell; Keep the nutritive ingredient in the ecological, environmental protective nutrition soil not run off, help growth and development of plant.
High sticking attapulgite clay powder is meant gets 28.0g attapulgite clay powder sample; Add in the suspension-s cup of impeller, add 372g water again, the suspension-s cup is placed on the impeller; Under 11000 rev/mins rotating speed, stirred 20 minutes; To pass through the high-speed stirring sample suspension again and pour in the beaker of 250ml, the viscosity of using NDJ-1 type rotational viscosimeter to test its suspension-s, tested viscosity value>=2200
MPasThe attapulgite clay powder be high sticking attapulgite clay powder, the height that the present invention selects for use glues attapulgite clay powder particles fineness≤0.074 millimeter.
Bentonite in powder has strong water absorbability and swelling property, adsorbable 8~15 times to the water yield of own vol, volumetric expansion can reach several times even 30 times; In water medium, can be dispersed into as a form of gel and suspension, this medium solution has certain glutinousness, variability and oilness; Stronger CEC is arranged; All gases, liquid, organic substance are had certain adsorptive power, and maximal absorptive capacity can reach 5 times of weight to self; The admixture of it and water, mud or fine sand has plasticity-and agglutinating value(of coal), bentonite in powder particle fineness≤0.074 that the present invention selects for use millimeter.
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 for use.
Feces of livestock and poultry after the fermentation is meant to be concentrated feces of livestock and poultry such as pig, ox, sheep, chicken, duck and goose or ferment separately; Contain abundant nutritive element and organic matter in the feces of livestock and poultry by fermentation; It is a kind of good organic fertilizer resource; Can improve utilizability nitrogen, phosphorus, potassium, organic content and the growth that promotes plant of ecological, environmental protective nutrition soil; Increase the yield and quality of the organic content of ecological, environmental protective nutrition soil, the physico-chemical property of improving ecological, environmental protective nutrition soil, raising crop, can also kill germ and insects such as excrement colibacillus group, roundworm egg, nematode.
Edible fungi residue is a remaining waste behind the various mushrooms of cultivation, and it contains protein and other nutritive substance, and the title of " tropina " is arranged; Contain a large amount of mycelium; The bacterium slag is loose ventilative, can in ecological, environmental protective nutrition soil, further resolve into the soil ulmin with good ventilation, water-holding capacity, can increase the ventilation property of ecological, environmental protective nutrition soil; Avoid the ecological, environmental protective nutrition local products life phenomenon that hardens; The bacterium slag is rich in organism and multiple mineral element, can improve ecological, environmental protective nutrition soil, increases the fertility of ecological, environmental protective nutrition soil.
Edible fungi residue after the carbonization is that edible fungi residue is carried out roasting under anoxic condition; Black edible fungi residue after the roasting is the edible fungi residue after the carbonization; Contain a large amount of potash fertilizer in the edible fungi residue after the carbonization, and can further strengthen the ventilation property of ecological, environmental protective nutrition soil.
Iron is to form the necessary element of chlorophyll, and plant just produces chlorosis during iron deficiency, and it is faint yellow that blade is, even is white, and the present invention selects ferrous sulfate for use.
Zinc is the component of some enzyme of plant, and zinc also is to promote that some metabolic reactions are essential, and zinc generates and forms glucide and is absolutely necessary for chlorophyll, and the present invention selects zinc sulfate for use.
Molybdenum mainly shows in the intravital physiological function of plant aspect the nitrogen metabolism, and molybdenum can also promote photosynthetic intensity and eliminate active aluminum in the acid soil in plant materials, to accumulate and the toxic action that produces that the present invention selects ammonium molybdate for use.
Copper has the ability that improves plant chlorophyll stability, avoids chlorophyll to wreck too early, helps blade and carries out photosynthesis better, and the present invention selects copper sulfate for use.
Boron can promote the normal operation of glucide, and the position that boron-containing quantity is the highest in plant materials is colored, so boron deficiency often shows as " colored and unreal ", and the present invention selects borax for use.
Manganese can promote the metabolism of glucide and the metabolism of nitrogen, with growth and development of plants and output substantial connection is arranged, and the present invention selects manganous sulfate for use.
The present invention is achieved through following technical proposals:
1, utilize lake silt to produce the method for ecological, environmental protective nutrition soil: the batching of ecological, environmental protective nutrition soil to be added in the biaxial rneader jointly stir; Be transported to through rotary conveyor after stirring and be squeezed into irregular particle in the twin rollers; Again irregular particle is imported in the integrated soil disinfection insect-killing device and carried out sterilizing pesticide and oven dry; Through the irregular particle after sterilizing pesticide and the oven dry is the finished product of ecological environmental protection nutritive soil, massfraction≤30% of ecological, environmental protective nutrition soil moisture.
The batching of said ecological, environmental protective nutrition soil is made up of following component by weight percentage: edible fungi residue 2~20% and trace element mixture 0.01~2% after the feces of livestock and poultry 5~35% after ecological, environmental protective nutrition soil work in-process 35~85%, the fermentation, edible fungi residue 5~25%, the carbonization.
The half-finished working method of said ecological, environmental protective nutrition soil: add lake silt and suction solidifying agent in the batching plant respectively; According to the batching requirement lake silt and suction solidifying agent are mixed in the back adding concrete mixer again and stir; In whipping process; Large quantity of moisture in the lake silt solidifying agent that absorbed water absorbs, and the lake silt after suction is solidified is cured as ecological, environmental protective nutrition soil work in-process.
The half-finished batching of said ecological, environmental protective nutrition soil is made up of following component by weight percentage: lake silt 55~90% and suction solidifying agent 10~45%.
The batching of said suction solidifying agent is made up of following component by weight percentage: flyash 65~85%, high sticking attapulgite clay powder 5~20%, bentonite in powder 3~15% and High hydrophilous resin 0.1~5%.
The batching of said trace element mixture is made up of following component by weight percentage: ferrous sulfate 0.01~25%, zinc sulfate 0.01~25%, ammonium molybdate 0.01~20%, copper sulfate 0.01~20%, borax 0.01~20% and manganous sulfate 0.01~20%.
Said integrated soil disinfection insect-killing device is formed by adding hometown earth sterilizing pesticide device and pot arch, add hometown earth sterilizing pesticide device by cylindrical conduit, ring flange, hopper, sterilizing pesticide chamber, spiral conveying blade, hub, sealing plate, sealing-ring, extraction line, vapor pipe, thermopair, chock, shaft coupling and buncher form; Pot arch is made up of body of heater, combustion chamber, furnace bottom, ash storage room, ash-removing door, gas blower, chimney, refractory materials, fire bars, blast pipe and fire door.
The separate case application of integrated soil disinfection insect-killing device patent of invention, number of patent application is: 201210086118.1 and 201210087882.0.
Utilize lake silt to produce ecological, environmental protective nutrition soil; Have the advantages that technology is simple, production efficiency is high and with low cost; Need not carry out processed to the higher lake silt of water cut, can be at the harbour, the dredging scene in navigation channel, lake and river processes the ecological, environmental protective nutrition soil of various prescriptions, effectively handles and make full use of lake silt; Save a large amount of land resources, can adopt the commercialization mode that lake silt is carried out comprehensive development and utilization.
Utilize and contain flyash, high sticking attapulgite clay and wilkinite in the ecological, environmental protective nutrition soil of lake silt production; Can adsorb the heavy metal in the lake silt, organic and inorganic pollutant; Do not use chemical nitrogen fertilizer and chemical pesticide; Help preserving the ecological environment, avoid surrounding enviroment are caused secondary pollution.
Ecological, environmental protective nutrition soil finished product is through sterilizing pesticide with after drying; Can guarantee the inner quality of ecological, environmental protective nutrition soil; Contain a large amount of nitrogen, phosphorus, potassium, organic matter and various trace elements in the ecological, environmental protective nutrition soil finished product; Be that a kind of nutrition is complete, fertilizer efficiency is high, water retention property is lasting, nontoxic, harmless and do not have the high-quality ecological, environmental protective nutrition soil of stink, can provide plant-growth necessary nutritive element; Reduce the harm to plant of pathogenic bacteria and insect, the normal growth that helps plant is grown.
The method of utilizing lake silt to produce ecological, environmental protective nutrition soil is applicable to the lake silt to be the ecological, environmental protective nutrition soil of main material production multiple formulations.