CN104261550A - Biological composite filler for treating livestock wastewater, preparation method and application of biological composite filler - Google Patents
Biological composite filler for treating livestock wastewater, preparation method and application of biological composite filler Download PDFInfo
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- CN104261550A CN104261550A CN201410530998.6A CN201410530998A CN104261550A CN 104261550 A CN104261550 A CN 104261550A CN 201410530998 A CN201410530998 A CN 201410530998A CN 104261550 A CN104261550 A CN 104261550A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
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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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses a biological composite filler for treating livestock wastewater, and a preparation method and application of the biological composite filler, and belongs to the field of treatment of livestock breeding wastewater. The preparation method comprises the following steps: (1) washing, air-drying and cutting wheat straws and soybean straws; (2) heating the mixed straws for pyrolysis; (3) preparing an (NH4)2HPO4 solution; (4) feeding the mixed straws into the (NH4)2HPO4 solution; (5) heating willow blocks for pyrolysis; (6) mixing the straws, wheat starch and wheat bran with stirring; (7) impregnating and drying biomass blocks; (8) compressing the biomass blocks into bulks to obtain the biological composite fillers by using a compressor. After the biological composite fillers are fed into the livestock wastewater, macromolecular nutrient elements such as phytate phosphorus, residual veterinary drugs, urea and suspended matters and metallic elements such as copper, iron and zinc in the wastewater can be greatly adsorbed, so that the problem of difficulty in the treatment of the livestock wastewater is effectively solved.
Description
Technical field
The invention belongs to livestock breeding wastewater process field; Specifically, a kind of biological compounded mix processing waste water of livestock poultry and its preparation method and application is related to, more particularly, refer to for livestock breeding wastewater ammonia nitrogen loading high, water outlet is not easily up to standard, and left drug is many, processing cost is high, provides a kind of and process can make it biological compounded mix up to standard.
Background technology
In recent years; along with the development of China's intensive culture industry and large-scale cultivation industry; there is a large amount of plants in rural area; the wastewater flow rate of these plant's discharges every day is large, concentrated; and containing a large amount of pollutent in waste water; as heavy metal, residual veterinary drug and a large amount of pathogenic agent etc., cause the problem of environmental pollution that China is new.The environmental problem that livestock and poultry breeding industry brings is on the rise, and the quantity discharged of its chemical oxygen demand (COD) has exceeded the summation of China's industrial and life contaminated water quantity discharged, is one of principal element forming rural pollution.Because the leaching of Animal fecal pollution is very strong, the leaching such as the nitrogen in fecaluria, phosphorus and water soluble organic substance are very large, if do not dealt carefully with, will enter Water table polluted underground water by rainwash and diafiltration.To earth's surface water mitigation then main manifestations be that, after large amount of organic matter enters water body, the dissolved oxygen that organic decomposition will consume in water in a large number, makes water body smelly; After the dissolved oxygen in water body significantly declines, large amount of organic matter can under anaerobic continue to decompose, and will produce the toxic gas such as methane, hydrogen sulfide, cause hydrobiont mortality in decomposition; A large amount of suspended substances in waste water can make water body muddy, reduce the photosynthesis of algae in water, limit hydrobiological normal activity, make the hydrobiont of Organic pollutants sensitivity dead gradually, thus aggravate water bottom anoxic further, water body assimilative capacity is reduced; Nitrogen, phosphorus can make body eutrophication, the result of eutrophication can make NO3-N and NO2-N excessive concentration in water body, if people and animals' long-term drinking can cause poisoning, and the growth of some toxic algae and amount reproduction can discharge a large amount of toxin in water body, cause the mortality of hydrocoles, thus seriously destroy water ecology balance; Some germ, viruses etc. in fecaluria may cause some epiphytotics propagation etc. with water flow.
At present, the process of waste water of livestock poultry mainly adopts the combination process of anaerobic-aerobic, very effective to the removal of COD and suspended substance, but Nitrogen/Phosphorus Removal is not obvious, and particularly for the waste water of livestock poultry of high ammonia-nitrogen content, denitrogenation processing often can not be up to standard.Trace it to its cause: waste water of livestock poultry reduces through anaerobic treatment afterload, and part larger molecular organics becomes small molecules, improves the ability of follow-up aerobic biochemical, but in anaerobic effluent, pollution load is still very large; Especially for the high ammonia nitrogen waste water of livestock poultry of larger cultivation scale, colourity is high, and hard-degraded substance is more, in addition containing pollutents such as metal, residual veterinary drug (microbiotic) and a large amount of pathogenic agent, these materials are large to water body environment pollution, difficult decomposition; Only rely on simple anaerobic hydrolysis-acidification cannot decompose these materials, because water is large to microbiological effect, pollutant load is high, the problem such as often cause the removal effect of poor processing effect when carrying out follow-up aerobic treatment, nitrogen phosphorus not good, and harmless treatment rate is low.Simultaneously, after the aerobic treatment of waste water of livestock poultry, C/N is lower, be unfavorable for denitrification process, affect the removal effect of TN (nitrogen content), especially in treating processes, there is the unpleasant situation of stink, this is the most averse phenomenon of surrounding resident often, is also to improve the problem that human settlement must solve.Therefore seek a kind for the treatment of process of more cost-effective waste water of livestock poultry, there is very real social benefit, economic benefit and environmental benefit.
So how efficiently processing livestock breeding wastewater has become an important topic.On the one hand, in animal and fowl fodder, a large amount of inorganic phosphorus about 75% added is phytate phosphorus, directly excretes, cause pollution because phytate phosphorus can not be absorbed by animal.On the other hand, each feed factory and plant all generally adopt high-copper, high ferro, the trace mineral supplements such as Gao Xin, due to these metallic elements specific absorption and utilization ratio is all very low easily excretes entered environment with ight soil, overall situation public hazards of China are become, and plant is arranged on rural area, and these copper, iron, the trace mineral supplements such as zinc and nitrogen and phosphorus are exactly required for farm crop, if so be directly discharged into the harmful material of water body can directly by farmland to utilizing, be preferred plan, want these copper, iron, the transfer of the trace mineral supplements such as zinc and nitrogen and phosphorus then will through a series for the treatment of process.
Existing data-searching finds, Chinese Patent Application No.: 200810120397.2, publication date on January 14th, 2009, disclose the patent application document that a name is called comprehensive treatment method for wastewater of livestock and poultry cultivation, this invention relates to a kind of method of wastewater treatment, and this treatment process adopts following measure: (1) carries out anaerobic biological treatment with up-flow anaerobic sludge blanket treater (UASB); (2) Aerobic biological process is carried out with modified version MBBR (MBBR); (3) N, P is removed with ammoniomagnesium phosphate crystal reaction method.But it is still very high to go out Water l oad after this invention anaerobism, and containing many hard-degraded substances in livestock breeding wastewater, in addition containing pollutents such as metal, residual veterinary drug (microbiotic) and a large amount of pathogenic agent, have restraining effect to follow-up aerobic microbiological, cannot ensure aerobic treatment efficiency, the biogas that UASB produces simultaneously does not rationally process, topmost complex disposal process, cost is high, and taste is unpleasant, is difficult to allow the resident of surrounding accept.
Chinese Patent Application No.: 201010250262.5, publication date on December 22nd, 2010, disclose the patent application document that a name is called a kind of two-stage anaerobic-tower type filter chamber livestock/poultry wastewater treatment system and treatment process, this invention relates to treatment system and the treatment process of waste water of livestock poultry, it comprises: one-level anaerobic pond, secondary anaerobic pond and tower type filter chamber, described tower type filter chamber water outlet connects gravel artificial swamp, by two-stage anaerobic, aerobic and artificial swamp organics removal and nitrogen phosphorus.The ammonia nitrogen removal of this invention relies on two-stage anaerobic, but cannot ensure that total nitrogen can effectively be removed, and denitrifying effect is not obvious, and arranges two-stage anaerobic, and a large amount of biogas of generation directly enter in air, cannot be utilized effectively.Or the problem of metal content cannot be solved.
Summary of the invention
The problem that 1, will solve
Metal content cannot be solved high for existing waste water of livestock poultry process, containing the problem that nitrogen phosphorus and treating processes peculiar smell weigh, the invention provides a kind of biological compounded mix processing waste water of livestock poultry and its preparation method and application, biological compounded mix porosity and filler physical strength high, the phytate phosphorus in waste water can be adsorbed in a large number after in input waste water of livestock poultry, residual veterinary drug (microbiotic), urea, macromole nutritive element and the copper such as suspended substance, iron, the metallic elements such as zinc, Biofilm Colonization performance is strong, while absorption, also there is disinfection, the pathogenic agent in waste water can be killed, effectively solve the problem of waste water of livestock poultry process difficulty.
2, technical scheme
For solving the problem, the present invention adopts following technical scheme.
Process a preparation method for the biological compounded mix of waste water of livestock poultry, step is as follows:
(1) wheat stalk and soybean stalk cleaned air-dry and cut into the particle that length is 8-15mm, according to (3-5): the mass ratio of 1 selects wheat stalk and soybean stalk mixing, obtains granular mixed straw;
(2) above-mentioned granular mixed straw is heated pyrolysis in anoxic or anaerobic, pyrolysis temperature is 230-310 DEG C, and pyrolysis time is 0.5-1.5 hour, cools after pyrolysis, obtains the mixed straw after pyrolysis;
(3) diammonium phosphate is taken and water configuration concentration is the (NH of 120-150g/L
4)
2hPO
4solution;
(4) mixed straw after pyrolysis in step (2) is put into (NH that step (3) is prepared
4)
2hPO
4in solution, vibration 10-50 minute, then adds Repone K in solution, wherein the dosage of Repone K is the concentration of control Chlorine in Solution potassium is 90-120g/L, and vibration 20-40 minute, after placing 5-8 hour, filter and collect solid, obtaining modified stalk;
(5) get willow and be cut into block, then in oxygen-free environment, heat pyrolysis, pyrolysis temperature is 200-280 DEG C, and pyrolysis time is 1-3 hour, obtains the willow block after pyrolysis;
(6) by stalk modified in step (4), wheat starch and Testa Tritici mix and blend, the mass ratio of wherein modified stalk, wheat starch and Testa Tritici is (6-9): (1-1.8): 1, obtains mixing outer material; By the outside of outer for mixing material parcel willow block after pyrolysis, be compressed into block through pressing machine, obtain biomass briquette; Wherein the mass ratio of the outer material of mixing and willow block is (5-9): 1;
(7) biomass briquette in step (6) is reentered in the soaking solution of the middle mistake of step (4) and soaks 1-2.5 hour; Take out after soaking, dry;
(8) biomass briquette of drying in step (7) is become block through compressor compresses, obtain biological compounded mix.
Preferably, in described step (6), the pressure of pressing machine is 1.8-2.3MPa, and the length of biomass briquette is 20-29cm, and width is 9-13cm, and thickness is 5-9cm.
Preferably, in described step (8), the pressure of pressing machine is 2.4-2.7MPa, and the length of biological compounded mix is 20-29cm, and width is 9-13cm, and thickness is 4-8cm.
Preferably, the solution after again soaking in described step (7) directly enters in methane-generating pit or fermentation entered in farmland as Fertilizer application after 3 days.
Preferably, described fermentation refers to and is placed on natural reaction in an open container.
Biological compounded mix prepared by foregoing a kind of preparation method processing the biological compounded mix of waste water of livestock poultry.This biological compounded mix can be applied to process waste water of livestock poultry.
Foregoing biological compounded mix is in the application of crab culture pond as bottom stone.This filler is added in crab culture pond and uses, can purify water greatly, improve the surviving rate of crab.
The invention solves the application problem of wheat stalk in the preparation of the biological compounded mix of process waste water of livestock poultry, expand the range of application of wheat stalk.
The method of the biological compounded mix process waste water of livestock poultry prepared above, its step is as follows:
A biological compounded mix is put in pending waste water of livestock poultry by (), soak 3-10 hour, wherein the volume ratio of biological compounded mix and waste water of livestock poultry is 1:(10-20);
B () soaks after, take out the biological compounded mix in step (a), biological compounded mix after soaking is cocked, then at surface coverage one deck wheat stalk or maize straw, carry out During High-Temperature Composting, the Environment Day medial temperature of compost is set to T, wherein the span of T is 0-45 DEG C, the compost time is t, and unit is h, and wherein the value of t is 240-(T-10) × 2.4; By the rational period, play maximum corruption effect;
C () is directly entered by the waste water of livestock poultry solution soaking biological compounded mix in step (b) in methane-generating pit or fermentation entered in farmland as Fertilizer application after 3 days;
D product after During High-Temperature Composting in step (b) dries by (), use as fertilizer.
3, beneficial effect
Compared to prior art, beneficial effect of the present invention is:
(1) the present invention considers Financial cost and the result of use of raw material, through great many of experiments, finally determine to adopt wheat stalk and soybean stalk, and through a large amount of optimization experiments, determine that pyrolysis temperature is 230-310 DEG C, pyrolysis time is 0.5-1.5 hour, absorption property and the follow-up mechanical property of the stalk after such pyrolysis can reach optimum regime, serve the effect of the treatment of wastes with processes of wastes against one another simultaneously, not only solve the problem of waste water of livestock poultry process difficulty, and solve the problem of stalk, if promoted the use of, then crop straw burning problem can be given and solution;
(2) what the present invention adopted the modification of stalk is diammonium phosphate and Repone K, these elements are all the necessary elements of plant-growth, can directly as soil fertility quality after using, the maximum cost of the present invention is willow, can form a large amount of spaces after willow pyrolysis, the trace element especially in willow have good adsorption effect to urea etc. containing nitrogen macromolecule and antibiosis;
(3) stalk, wheat starch and Testa Tritici mix and blend is adopted during briquetting of the present invention, raw material sources cost is low, for follow-up During High-Temperature Composting provides place mat, and Biofilm Colonization when being conducive to using, absorption microbiotic, also can improve the effect of subsequent high temperature compost;
(4) in step of the present invention (6), the pressure of pressing machine is 1.8-2.3MPa, the length of the size of biomass briquette is 20-29cm, width is 9-13cm, thickness is 5-9cm, in step (8), the pressure of pressing machine is 2.4-2.7MPa, the length of biological compounded mix is 20-29cm, width is 9-13cm, thickness is 4-8cm, this is because process waste water of livestock poultry will control the suitable time, suitable pressure guarantees suitable space and adsorptive power, size then determines adsorption time, if too little, adsorption effect is not obvious, then adsorption time can be extended too greatly, cause may also having the nitrogenous substancess such as urea like this in the process of absorption again to overflow, the offensive gases of trace can be discharged in treating processes, affect surrounding resident, also be unfavorable for that workman's is healthy, and according to requirement operation of the present invention, then offensive gases can not be produced,
(5) solution after again soaking in step of the present invention (7) directly enters in methane-generating pit or fermentation entered in farmland as Fertilizer application after 3 days, fermentation refers to and is placed on natural reaction in an open container, at this time owing to having been adsorbed containing nitrogen macromolecule and the metallic element such as microbiotic and copper, iron, zinc, there is no that offensive gases discharges like this, in methane-generating pit or fermentation 3 days, ph value is neutral, can directly enter in farmland, not only play the effect of pouring, the phosphorus of the trace that its inside is contained and potassium are also supplementing farmland fertilizer;
(6) the present invention is while solution waste water of livestock poultry, also can solve a process difficult problem for wheat and soybean stalk, the treatment of wastes with processes of wastes against one another, the biological compounded mix of preparation is cheap, be easy to get, environmental protection, adsorb saturated filler to continue to use as fertilizer after During High-Temperature Composting, no waste mine is discharged.
Embodiment
Below in conjunction with in specific embodiment, the present invention is described in detail.
Embodiment 1
Process a preparation method for the biological compounded mix of waste water of livestock poultry, step is as follows:
(1) wheat stalk and soybean stalk cleaned air-dry and cut into the particle that length is 8-10mm, selecting wheat stalk and soybean stalk mixing according to the mass ratio of 4:1, obtain granular mixed straw;
(2) above-mentioned granular mixed straw is heated pyrolysis in anoxic or anaerobic, pyrolysis temperature is 290 DEG C, and pyrolysis time is 1 hour, cools after pyrolysis, obtains the mixed straw after pyrolysis;
(3) diammonium phosphate is taken and water configuration concentration is the (NH of 135g/L
4)
2hPO
4solution (the amount energy submergence mixed straw of solution, the present embodiment is configured with the solution of 100kg, and mixed straw has prepared 230kg);
(4) mixed straw in step (2) after pyrolysis puts into the (NH that step (3) is prepared
4)
2hPO
4in solution, vibrate 30 minutes, then in solution, add Repone K, wherein the dosage of Repone K is the concentration of control Chlorine in Solution potassium is 110g/L, vibrates 30 minutes, after placing 6 hours, filters and collect solid, obtaining modified stalk;
(5) get willow and be cut into block, then in oxygen-free environment, heat pyrolysis, pyrolysis temperature is 240 DEG C, and pyrolysis time is 2 hours, obtains the willow block after pyrolysis;
(6) by stalk modified in step (4), wheat starch and Testa Tritici mix and blend, the mass ratio of wherein modified stalk, wheat starch and Testa Tritici is 7:1.5:1, obtains mixing outer material; By the outside of outer for mixing material parcel willow block after pyrolysis, be compressed into block through pressing machine, obtain biomass briquette; Wherein the mass ratio of the outer material of mixing and willow block is 7:1, and core is willow block, and outside is the outer material of mixing; The pressure of pressing machine is 2.0MPa, and the length of biomass briquette is 26cm, and width is 10cm, and thickness is 8cm.
(7) biomass briquette in step (6) is reentered in the soaking solution of the middle mistake of step (4) and soaks 1.5 hours; Take out after soaking, dry; Solution after again soaking directly enters in methane-generating pit; Solution free from extraneous odour after process;
(8) biomass briquette of drying in step (7) is become block through compressor compresses, the pressure of pressing machine is 2.6MPa, and the length of the size of biological compounded mix is 26cm, and width is 10cm, and thickness is 6cm, obtains biological compounded mix.
The method of the biological compounded mix process waste water of livestock poultry prepared above, its step is as follows:
A biological compounded mix is put in pending waste water of livestock poultry by (), soak 5 hours, wherein the volume ratio of biological compounded mix and waste water of livestock poultry is 1:15;
B () soaks after, take out the biological compounded mix in step (a), biological compounded mix after soaking is cocked, then at surface coverage one deck wheat stalk, carry out During High-Temperature Composting, the Environment Day medial temperature of compost is set to T, and the compost time is t, unit is h, and wherein the value of t is 240-(T-10) × 2.4; Because envrionment temperature often fluctuates, this formula is the reasonable temperature simulated in the lab, if run into the situation of mean daily temperature fluctuation in continuous several days, then the value of T is according to the temperature temperature computation of minimum a day, during the present embodiment experiment, minimum daily mean temperature is 26 DEG C, t is 201.6h, and this time only represents that corruption completes, and does not represent and needs immediately to take out;
C the waste water of livestock poultry solution soaking biological compounded mix in step (b) directly enters in methane-generating pit by (); Solution free from extraneous odour after process;
D product after During High-Temperature Composting in step (b) dries by (), obtain dry-matter, dry-matter uses as fertilizer, after testing, not only not containing pathogenic agent in dry-matter, and microbiotic is decomposed, not only for farmland provides nitrogen, phosphorus, potassium element in dry-matter, also containing the abundant metallic element such as copper, iron, zinc, be applied in farmland as fertilizer, trace element need not be applied again, and can significantly improve the situation that hardens of soil, reduce the use of industrial chemical fertilizer.
The biological compounded mix prepared above also can in the application of crab culture pond as bottom stone.Be added in crab culture pond by this filler and use, can purify water greatly, improve the surviving rate of crab, the cultivation density of crab improves 13% than situation about not adding.
Embodiment 2
Process a preparation method for the biological compounded mix of waste water of livestock poultry, step is as follows:
(1) wheat stalk and soybean stalk cleaned air-dry and cut into the particle that length is 9-13mm, selecting wheat stalk and soybean stalk mixing according to the mass ratio of 3:1, obtain granular mixed straw;
(2) above-mentioned granular mixed straw is heated pyrolysis in anoxic or anaerobic, pyrolysis temperature is 230 DEG C, and pyrolysis time is 1.5 hours, cools after pyrolysis, obtains the mixed straw after pyrolysis;
(3) diammonium phosphate is taken and water configuration concentration is the (NH of 150g/L
4)
2hPO
4solution (the amount energy submergence mixed straw of solution, the present embodiment is configured with the solution of 100kg, and mixed straw has prepared 250kg);
(4) mixed straw in step (2) after pyrolysis puts into the (NH that step (3) is prepared
4)
2hPO
4in solution, vibrate 10 minutes, then in solution, add Repone K, wherein the dosage of Repone K is the concentration of control Chlorine in Solution potassium is 90g/L, vibrates 40 minutes, after placing 5 hours, filters and collect solid, obtaining modified stalk;
(5) get willow and be cut into block, then in oxygen-free environment, heat pyrolysis, pyrolysis temperature is 280 DEG C, and pyrolysis time is 1 hour, obtains the willow block after pyrolysis;
(6) by stalk modified in step (4), wheat starch and Testa Tritici mix and blend, the mass ratio of wherein modified stalk, wheat starch and Testa Tritici is 9:1:1, obtains mixing outer material; By the outside of outer for mixing material parcel willow block after pyrolysis, be compressed into block through pressing machine, obtain biomass briquette; Wherein the mass ratio of the outer material of mixing and willow block is 5:1, and core is willow block, and outside is the outer material of mixing; The pressure of pressing machine is 1.8MPa, and the length of biomass briquette is 29cm, and width is 13cm, and thickness is 9cm.
(7) biomass briquette in step (6) is reentered in the soaking solution of the middle mistake of step (4) and soaks 2.5 hours; Take out after soaking, dry; Enter in farmland as Fertilizer application after solution after again soaking ferments 3 days; Fermentation refers to and is placed on natural reaction in an open container; Solution free from extraneous odour after process;
(8) biomass briquette of drying in step (7) is become block through compressor compresses, the pressure of pressing machine is 2.7MPa, and the length of the size of biological compounded mix is 29cm, and width is 13cm, and thickness is 8cm, obtains biological compounded mix.
The method of the biological compounded mix process waste water of livestock poultry prepared above, its step is as follows:
A biological compounded mix is put in pending waste water of livestock poultry by (), soak 10 hours, wherein the volume ratio of biological compounded mix and waste water of livestock poultry is 1:20;
B () soaks after, take out the biological compounded mix in step (a), biological compounded mix after soaking is cocked, then at surface coverage one deck maize straw, carry out During High-Temperature Composting, the Environment Day medial temperature of compost is set to T, wherein the span of T is 0-45 DEG C, the compost time is t, and unit is h, and wherein the value of t is 240-(T-10) × 2.4; Because envrionment temperature often fluctuates, this formula is the reasonable temperature simulated in the lab, if run into the situation of mean daily temperature fluctuation in continuous several days, then the value of T is according to the temperature temperature computation of minimum a day, like this by the rational period, play maximum corruption effect, improve treatment cycle simultaneously; During the present embodiment experiment, minimum daily mean temperature is 0 DEG C, and t is 264h, and this time only represents that corruption completes, and does not represent and needs immediately to take out;
C () enters as Fertilizer application in farmland after the waste water of livestock poultry solution soaking biological compounded mix in step (b) ferments 3 days, solution free from extraneous odour in fermenting process; ;
D product after During High-Temperature Composting in step (b) dries by (), obtain dry-matter, dry-matter uses as fertilizer, after testing, not only not containing pathogenic agent in dry-matter, and microbiotic is decomposed, not only for farmland provides nitrogen, phosphorus, potassium element in dry-matter, also containing the abundant metallic element such as copper, iron, zinc, be applied in farmland as fertilizer, trace element need not be applied again, and can significantly improve the situation that hardens of soil, reduce the use of industrial chemical fertilizer.
The biological compounded mix prepared above also can in the application of crab culture pond as bottom stone.Be added in crab culture pond by this filler and use, can purify water greatly, improve the surviving rate of crab, the cultivation density of crab improves 9% than situation about not adding.
Embodiment 3
Process a preparation method for the biological compounded mix of waste water of livestock poultry, step is as follows:
(1) wheat stalk and soybean stalk cleaned air-dry and cut into the particle that length is 10-15mm, selecting wheat stalk and soybean stalk mixing according to the mass ratio of 5:1, obtain granular mixed straw;
(2) above-mentioned granular mixed straw is heated pyrolysis in anoxic or anaerobic, pyrolysis temperature is 310 DEG C, and pyrolysis time is 0.5 hour, cools after pyrolysis, obtains the mixed straw after pyrolysis;
(3) diammonium phosphate is taken and water configuration concentration is the (NH of 120g/L
4)
2hPO
4solution (the amount energy submergence mixed straw of solution, the present embodiment is configured with the solution of 100kg, and mixed straw has prepared 240kg);
(4) mixed straw in step (2) after pyrolysis puts into the (NH that step (3) is prepared
4)
2hPO
4in solution, vibrate 50 minutes, then in solution, add Repone K, wherein the dosage of Repone K is the concentration of control Chlorine in Solution potassium is 120g/L, vibrates 20 minutes, after placing 8 hours, filters and collect solid, obtaining modified stalk;
(5) get willow and be cut into block, then in oxygen-free environment, heat pyrolysis, pyrolysis temperature is 200 DEG C, and pyrolysis time is 3 hours, obtains the willow block after pyrolysis;
(6) by stalk modified in step (4), wheat starch and Testa Tritici mix and blend, the mass ratio of wherein modified stalk, wheat starch and Testa Tritici is 6:1.8:1, obtains mixing outer material; By the outside of outer for mixing material parcel willow block after pyrolysis, be compressed into block through pressing machine, obtain biomass briquette; Wherein the mass ratio of the outer material of mixing and willow block is 9:1, and core is willow block, and outside is the outer material of mixing; The pressure of pressing machine is 2.3MPa, and the length of biomass briquette is 20cm, and width is 9cm, and thickness is 5cm.
(7) biomass briquette in step (6) is reentered in the soaking solution of the middle mistake of step (4) and soaks 1 hour; Take out after soaking, dry; Solution after again soaking directly enters in methane-generating pit; Solution free from extraneous odour after process;
(8) biomass briquette of drying in step (7) is become block through compressor compresses, the pressure of pressing machine is 2.4MPa, and the length of biological compounded mix is 20cm, and width is 9cm, and thickness is 4cm, obtains biological compounded mix.
The method of the biological compounded mix process waste water of livestock poultry prepared above, its step is as follows:
A biological compounded mix is put in pending waste water of livestock poultry by (), soak 3 hours, wherein the volume ratio of biological compounded mix and waste water of livestock poultry is 1:10;
B () soaks after, take out the biological compounded mix in step (a), biological compounded mix after soaking is cocked, then at surface coverage one deck wheat stalk, carry out During High-Temperature Composting, the Environment Day medial temperature of compost is set to T, wherein the span of T is 0-45 DEG C, reach 45 DEG C owing to being difficult to consecutive mean temperature in physical environment, the During High-Temperature Composting of the present embodiment adopts laboratory simulation, and medial temperature controls at 45 DEG C, the compost time is t, unit is h, and wherein the value of t is 240-(T-10) × 2.4, and namely the compost time is 156h;
C () is directly entered by the waste water of livestock poultry solution soaking biological compounded mix in step (b) in methane-generating pit or fermentation entered in farmland as Fertilizer application after 3 days;
D product after During High-Temperature Composting in step (b) dries by (), obtain dry-matter, dry-matter uses as fertilizer, after testing, not only not containing pathogenic agent in dry-matter, and microbiotic is decomposed, not only for farmland provides nitrogen, phosphorus, potassium element in dry-matter, also containing the abundant metallic element such as copper, iron, zinc, be applied in farmland as fertilizer, trace element need not be applied again, and can significantly improve the situation that hardens of soil, reduce the use of industrial chemical fertilizer.
The biological compounded mix prepared above also can in the application of crab culture pond as bottom stone.Be added in crab culture pond by this filler and use, can purify water greatly, improve the surviving rate of crab, the cultivation density of crab improves 10% than situation about not adding.
Claims (9)
1. process a preparation method for the biological compounded mix of waste water of livestock poultry, step is as follows:
(1) wheat stalk and soybean stalk cleaned air-dry and cut into the particle that length is 8-15mm, according to (3-5): the mass ratio of 1 selects wheat stalk and soybean stalk mixing, obtains granular mixed straw;
(2) above-mentioned granular mixed straw is heated pyrolysis in anoxic or anaerobic, pyrolysis temperature is 230-310 DEG C, and pyrolysis time is 0.5-1.5 hour, cools after pyrolysis, obtains the mixed straw after pyrolysis;
(3) diammonium phosphate is taken and water configuration concentration is the (NH of 120-150g/L
4)
2hPO
4solution;
(4) mixed straw after pyrolysis in step (2) is put into (NH that step (3) is prepared
4)
2hPO
4in solution, vibration 10-50 minute, then adds Repone K in solution, wherein the dosage of Repone K is the concentration of control Chlorine in Solution potassium is 90-120g/L, and vibration 20-40 minute, after placing 5-8 hour, filter and collect solid, obtaining modified stalk;
(5) get willow and be cut into block, then in oxygen-free environment, heat pyrolysis, pyrolysis temperature is 200-280 DEG C, and pyrolysis time is 1-3 hour, obtains the willow block after pyrolysis;
(6) by stalk modified in step (4), wheat starch and Testa Tritici mix and blend, the mass ratio of wherein modified stalk, wheat starch and Testa Tritici is (6-9): (1-1.8): 1, obtains mixing outer material; By the outside of outer for mixing material parcel willow block after pyrolysis, be compressed into block through pressing machine, obtain biomass briquette; Wherein the mass ratio of the outer material of mixing and willow block is (5-9): 1;
(7) biomass briquette in step (6) is reentered in the soaking solution of the middle mistake of step (4) and soaks 1-2.5 hour; Take out after soaking, dry;
(8) biomass briquette of drying in step (7) is become block through compressor compresses, obtain biological compounded mix.
2. a kind of preparation method processing the biological compounded mix of waste water of livestock poultry according to claim 1, it is characterized in that, in described step (6), the pressure of pressing machine is 1.8-2.3MPa, and the length of biomass briquette is 20-29cm, width is 9-13cm, and thickness is 5-9cm.
3. a kind of preparation method processing the biological compounded mix of waste water of livestock poultry according to claim 1, it is characterized in that, in described step (8), the pressure of pressing machine is 2.4-2.7MPa, and the length of biological compounded mix is 20-29cm, width is 9-13cm, and thickness is 4-8cm.
4. a kind of preparation method processing the biological compounded mix of waste water of livestock poultry according to claim 1, it is characterized in that, the solution after again soaking in described step (7) directly enters in methane-generating pit or fermentation entered in farmland as Fertilizer application after 3 days.
5. a kind of preparation method processing the biological compounded mix of waste water of livestock poultry according to claim 1, is characterized in that, described fermentation refers to and is placed on natural reaction in an open container.
6. biological compounded mix prepared by a kind of preparation method processing the biological compounded mix of waste water of livestock poultry in claim 1-5 described in any one.
7. biological compounded mix according to claim 6 is in the application of crab culture pond as bottom stone.
8. the application of biological compounded mix according to claim 6 in process waste water of livestock poultry.
9. the application of wheat stalk in the preparation of the biological compounded mix of process waste water of livestock poultry.
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