CN102010109A - Application of bio-enzyme catalysis in residual sludge treatment - Google Patents
Application of bio-enzyme catalysis in residual sludge treatment Download PDFInfo
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Abstract
A bio-enzyme consists of pectinase, protease, lipase, cellulose, catalase and amylase; the application of bio-enzyme catalysis in residual sludge treatment is that: the residual sludge is treated by utilizing the high-efficiency biocatalysis of the bio-enzyme, odor molecules in the sludge are decomposed and deodorized through enzyme technology, pathogenic bacteria, ova and larvae are killed by utilizing an acid environment formed by inorganic acid generated by the sludge and a high temperature environment in the fermentation process, heavy metal ions in the sludge are stabilized by utilizing the chelation of the bio-enzyme, and the sludge is catalyzed by the enzyme, so that the sludge and water are quickly separated, a large amount of supernate is discharged, the sludge volume is reduced, and the sludge in inland river is reduced and is subjected to innocent treatment; meanwhile, through the bio-enzyme catalysis, long-chain molecules in the sludge are converted into short-chain molecules, polysaccharide and cellulose are converted into protein and amino acid, nutritional components of organic fertilizers are remained, the fertilizer efficiency is improved and the fermentation period can be shortened.
Description
Technical field
The present invention is specifically related to the application of biological enzyme in the excess sludge treatment and disposal.
Background technology
In sewage treatment process, and natural water body such as inland river, a large amount of mud can be produced.The water ratio of mud causes mud that huge volume is arranged up to 95%～99%, brings very big difficulty for the subsequent disposal of mud.The component complexity of mud, variability is big, forming flco is that suspended solids forms through the glued cohesion of different modes in the water, loosely organized, out-of-shape, highly non-homogeneous, specific surface area and porosity are high, have fractal structure, have the branch and the reticulated structure of similar fine hair in appearance, be gluey liquid, its main characteristic is the water ratio height.Except that containing a large amount of moisture, also contain organism, heavy metal and the salt of difficult degradation, and a spot of pathogenic micro-organism and parasitic ovum etc.Composition from mud, contain nutritive elements such as abundant organism and N, P, K and the necessary various trace elements of Ca of plant, Mg, Cu, Zn, Fe etc., wherein the content of organism, nitrogen, phosphorus etc. all is higher than general farmers' barnyard manure, also contains potassium and other trace element.Lipid content is low in the mud, the high VSS of carbohydrate content, and carbohydrate (starch, carbohydrate, fiber) content height (being higher than 50%), lipid content low (about 20%), organic content is lower than 50% slightly; The mud nitrogen content is higher, and generally about 3%, mud C/N is than the scope that maintains 10-20%; The pH of mud and total alkalinity are substantially in normal range, and pH is between 6.5-7.0, and total alkalinity is between 16-26mg/L; The nitrogen that is rich in the mud, phosphorus, potassium are the essential fertilizer components of farm crop, and organic soil ulmin primary deposition mud contains 33%, and digested sludge contains 35%, and humus sludge contains 47%, is good soil improvement agent; Mud contains a large amount of organism and a certain amount of cellulignin, and the mud thermal value after the dehydration is about 836kJ/kg, has higher calorific value, has self-sustaining burning and as the possibility of the energy under certain water ratio.If be applied in the soil, can improve Soil structure, increase soil fertility, promote the growth of crop, soil physics, chemistry and biological character there are certain improving effect.Organic substance in the mud can obviously improve the structural of soil, and the unit weight of soil is descended, and hole increases, and the ventilating permeable of soil and field capacity improve, thereby improve soil physical.Applying sludge also can improve the cation exchange capacity of soil, improves the surge capability of soil to soda acid, and the avtive spot of nutrient exchange and absorption is provided, thereby improves soil fertilizer.Use with the mud as fertilizer sources, the water-holding power of soil, capillary vessel hole and ion-exchange capacity all can improve 3-23%, the organic 35-40% that increases, and total nitrogen content increases by 70%, and granule increases 25-60%.In addition, mud can also change the biological character of soil, makes microorganism total amount and the increase of actinomycetes proportion in the soil, and the metabolism intensity of soil improves.The various nutrients that enrich in the mud increase Soil Nitrogen, phosphorus nutrient significantly, and can provide nutrient to plant effectively, reduce the amount of application of chemical fertilizer, thereby can reduce the cost of agriculture production.In addition, mud can make microbial biomass in the soil increase and metabolism intensity improves and change the biological character of soil, so the utilization of mud soil is that to be fit to the present Economic development situation of China be a kind of positive, productive mud.Simultaneously, China is a developing country, is again a large agricultural country, and its wide land resources is the inherent advantage that development sewage sludge soil utilizes.Therefore, no matter still utilize factor from fertilizer efficiency from economic factors, the soil of mud utilizes particularly that the agricultural of mud all is a kind of method of disposal that meets China's actual conditions.This method of disposal can also can be alleviated the shortage of China's rural resource on the other hand for domestic sewage plant sludge finds this outlet of YITIAOGEN on the one hand.
Sludge composting technology is divided into aerobic fermentation and two kinds of technological processs of anaerobically fermenting.Anaerobically fermenting is because metabolites such as generation methane can produce stench, the height of facility investment simultaneously, the operational management complexity, strict, be suitable for the processing of large-scale Sewage Plant liquid sludge, because China generally adopts the anaeration in normal temperature fermentative processing, the mud temperature is at 30--40 ℃, subtract the appearance purpose though reach, but still can not direct returning to farmland.To mud behind the mechanical dehydration, mainly adopt the aerobic fermentation composting, the biological metabolism effect of aerobic fermentation process by the aerobic microorganism makes that organism changes into the soil ulmin that is rich in plant nutrient in the mud, and the final metabolite of reaction is CO
2, H
2O and heat, a large amount of heats make the material continuous high temperature, reduce the water ratio of material, remove pathogenic agent, parasitic ovum and weed seed effectively, make mud reach minimizing, stabilization, innoxious, resource utilization purpose.In anaerobically fermenting and aerobic fermentation process, adopt the biological enzyme technology, can promote mud further softening, discharge available nutrient, heavy metal contamination materials such as deleterious lead, chromium, arsenic, mercury, cadmium are passivated or degrade in the mud, pathogenic micro-organism in the mud and worm's ovum etc. have effectively been killed, the efficient foul smell of removing in the mud is a moisture, shorten fermentation period, facility investment and operation energy consumption all reduce by 1/3, equipment is less, operational management is simple, does not need other energy and labor management, is the sludge treatment and the disposal technology of efficient energy-saving., thereby, can directly put also further deep processing, preparation composite organic-inorganic fertilizer on market because Chinese countryside needs readily avaiable fertilizer from the fertilizer that compost produces.
Heavy metal in the sewage sludge and organic pollutant content have become the critical limitation factor that the mud soil utilizes, often contain heavy metal and many kinds of toxic organic compounds such as a large amount of copper, nickel, cadmium, lead, zinc, mercury in the mud, if the farmland midium or long term uses and can cause soil pollution, they enter human body by food chain again after by crop absorption, thereby influence HUMAN HEALTH.
Contain a large amount of pathogenic micro-organisms and parasite in the sludge from wastewater treatment plant, as not controlled, then mud can work the mischief to people and animals' health in soil utilization or use.So mud carries out before disposing or utilizing, and height, middle temperature aerobic method or anaerobic process are handled or the employing radiotreatment is indispensable link.
According to the measuring and calculating of environmental administration, the whole nation is annual to produce about about 3,000 ten thousand tons of the mud of water ratio 80%, and increases progressively with annual 15% quantity.Contain a large amount of organism and abundant nutritive substances such as nitrogen phosphorus in the mud, and objectionable constituent such as heavy metal, salt, pathogenic bacterium and parasite, mishandlingly will cause environmental health and pollution problem.
China has begun sludge of sewage treatment plant is used for landfill and urban afforestation at present, and mud is made matrix, makes composite fertilizer and is used for agricultural etc.Total situation still based on the form of mud soil utilization, is used for agricultural with mud but at home.Can therefore limit further disposal utilization owing to domestic high not enough to the attention degree of Oranoleptic indicators such as physical and chemical index such as the contained pathogenic bacteria of mud, heavy metal and toxic organic compound and foul smell control at the mud management aspect to mud.
Because what domestic sludge treatment was disposed starts late, in overall city planning is not included the sludge disposal place in many cities.Cause a lot of treatment plants to be difficult to find suitable mud and mud to throw aside the place; The weak foundation that China mud utilizes, there is wretched insufficiency in people to the understanding of mud utilization, the ultimate disposal problem of mud is lacked pay close attention to, and have stayed hidden danger to the ultimate disposal of some harmful mud; The utilization ratio of mud is not very high, and still the sewage plant sludge of some is only directly stacked by environmental sanitation department outward transport suburbs through storing promptly, this mode of a lot of employings in especially domestic southern cities.Such disposal options had both influenced the normal operation of Sewage Plant, and the random stacking of mud simultaneously may produce secondary pollution again, also causes the waste of sludge resource.Therefore, the current problem that faces of China is to develop the efficient treatment and disposal technology of mud as early as possible to solve ever-increasing sewage sludge, also becomes the research focus.
Summary of the invention
The object of the present invention is to provide the utilisation technology of biological enzyme in the excess sludge treatment and disposal, adopt the biological enzyme technique to high-efficiency to handle excess sludge, come the more present inaccessiable excess sludge of Pollution abatement technology is handled by effective biocatalytic Activity, make sludge reduction, stabilization, innoxious, resource utilization after the processing, thoroughly administer the biological enzyme that pollutes and can make full use of and efficiently handle the excess sludge technology.
A kind of biological enzyme is a compound biological enzyme, and this prozyme is by polygalacturonase, proteolytic enzyme, lipase, cellulase, catalase, the diastatic composition; The massfraction of forming each component of this biological enzyme is: polygalacturonase 4-20%, proteinase 8-30%, lipase 8-30%, cellulase 8-25%, catalase 4-20%, amylase 5-25%.Also can add in phytase, laccase, dextranase, zytase, saccharifying enzyme, Pullulanase and the mannase one or more in the described prozyme, addition accounts for the 4-30% of prozyme quality.
The application of a kind of biological enzyme in the excess sludge treatment and disposal, be to utilize the biocatalytic Activity efficiently of biological enzyme to handle excess sludge, utilize zymotechnic with the foul smell molecular breakdown in the mud, disappear smelly, and utilize the mineral acid of its generation to form sour environment and fermenting process hot environment, kill pathogenic bacteria, worm's ovum, the young, the sequestering action that utilizes biological enzyme is with the heavy metal ion stabilization in the mud, by enzyme catalysis mud, make the muddy water sharp separation, a large amount of supernatant liquors is discharged, reduce sludge volume, realized minimizing; By the biological enzyme effect long chain molecule in the mud is transformed into the chain rupture molecule, polysaccharide, Mierocrystalline cellulose are transformed into protein, amino acid keeps the nutrition composition that fertilizer needs, and improves fertilizer efficiency and can shorten fermentation period simultaneously.
Utilize the biocatalytic Activity efficiently of biological enzyme, can be used for the excess sludge of Treating Municipal Sewage treatment plant, inland river mud and industrial organic sludge.
The concrete grammar of handling excess sludge is:
1) mixes uniformly or contact preparing biological enzyme and mud, stir;
2) according to the water content of mud, can suitably regulate moisture content, the moisture content that regulates should be at 50-70%, and agglomerating to hold, a finger resilience energy gently scatters, and does not drip in the middle of the webs and is advisable;
3) treat sludge fermentation, after temperature rose to 50 degree, turning every day once stirred twice, and ferment got final product in 7-10 days.
Above-mentioned steps 1) can add microbial bacteria in, microbial bacteria is mixed and is formed by vinelandii 20%-30%, organophosphorus bacterium 20%-30%, inorganic phosphorus bacteria 15%-25%, potassium bacterium 20%-32%.
The quality of described interpolation biological enzyme accounts for 2 ‰-5% of sludge quality, and the amount of microbial bacteria accounts for 1 ‰-5% of sludge quality.
In the excess sludge process of Treating Municipal Sewage treatment plant, can add the plant refuse that contains C, wheat bran, one or more of depleted straw, the mud after the processing can be in order to produce fertilizer, and addition is the 5%-40% of biological enzyme quality; In handling inland river mud, can add one or more of inorganic carrier component water, diatomite or construction waste fragment of brick, addition is the 5%-40% of biological enzyme quality.
Excess sludge after the processing can be used as produces organic composite fertilizer or agricultural soil.
Adopt the biological enzyme scavenging agent to substitute the inland river and dig the mud engineering clearly.Under certain conditions, only need to throw to be sprinkling upon places such as contaminated river course, lakes and marhshes, reservoir, bay, just can decompose the mud of removing the bottom, purify contaminated water body, secondary pollution can not take place.With machinery or artificial smooth river course bottom, the especially show-through dry place of cleaning; Remove bulk stone, weeds and other foreign material in the river course.Build little Dam retaining in show-through riverbed segmentation with bed mud.Maintain in the river course under the situation of water, the substrate scavenging agent is evenly spread the river bed by design requirements.After the organism in the bed-silt was absorbed decomposition, the bed mud surface was exactly sand, the stone that one deck is not absorbed decomposition, and water quality takes a turn for the better.
The comprehensive utilization of mud material of construction is meant the inorganicization processing of mud, is used to make cement additive, brickmaking, system aglite and roadbed material etc.
Present technique adopt the biocatalysis principle be utilize enzyme and zymotechnic with the foul smell molecular breakdown in the mud, disappear smelly, and utilize the mineral acid of its generation to form sour environment and fermenting process hot environment, kill pathogenic bacteria, worm's ovum, the young, the sequestering action that utilizes biological enzyme is with the heavy metal ion stabilization in the mud, by the muddy water sharp separation in the enzyme catalysis mud, a large amount of supernatant liquors is discharged, and has reduced sludge volume, has realized minimizing.By the biological enzyme effect long chain molecule in the mud is transformed into the chain rupture molecule, polysaccharide, Mierocrystalline cellulose are transformed into protein, amino acid keeps the nutrition composition that fertilizer needs, and improves fertilizer efficiency and can shorten fermentation period simultaneously.Biological enzyme causes as catalyzer and the acceleration chemical reaction.They open the chemical chain of different pollution substances, rapidly each pollutant are converted into the small organic molecule of easy degraded or directly are degraded to CO
2, H
2Inorganicss such as O make their degradeds, through the biological enzyme process, shorten the treatment time, can keep useful matter in the mud, remove useless material, and make the heavy metal passivation.
Utilize biological enzyme technical finesse mud, soften → biological enzyme → biologically dehydrating → a series of technology such as material adjusting → heavy metal passivation, produce organic composite fertilizer and agricultural soil by sludge seeding.Nitrogen phosphorus potassium total nutrient is greater than 10%, and organic content is greater than 38%, and heavy metal content is a kind of efficient, cheap, safe novel ecological fertilizer far below Ministry of Agriculture's standard.Simultaneously, this product price is low, is accepted by market easily, has vast market prospect.Fertilizer wherein: nitrogen, phosphorus, potassium 10%, pH6-8, organic 38%, moisture (free-water) content/(%)≤20.Agricultural soil: nitrogen, phosphorus, potassium content 3%, pH6-8, organic matter 38%, moisture (free-water) content/(%)≤20.Heavy metal content is lower more than 50% than mud agricultural standards in the product, and induced worm egg death rate and intestinal bacteria index all meet relevant national standard.
Adopt biological enzyme technical finesse disposing sludge, produce fertilizer and agricultural soil, its advantage is:
(1) guaranteed the normal operation of sewage work, the protection water surrounding.
(2) reduced the improper harm of sludge disposal to environment.The annual mud that reduces has avoided causing because of organic contamination the possibility of body eutrophication to surface water and phreatic pollution.
(3) facility investment is few: the facility investment that this technology day is handled 1 ton of mud is about 1/2 of other treatment technology, and 50 tons in the wet mud of day processing 80% water content is handled 12 days cycles fully, but continuous production.
(4) fermentation time shortens, and is reduced to about 10 days by more than 20 days, surpasses half thereby dwindle floor space, greatly reduces construction costs.
(5) running cost is low:
1. owing to adopted advanced biological enzyme technology, treating processes only need be added biological bacteria and enzyme.
2. the origin of heat of sludge fermentation and drying process only consumes small amount of electrical energy in biological heat energy when turnover throwing machine is worked.
3. level of automation height, technical process is simplified, and working method is grasped easily, and operator are less, and cost of labor is relatively low.
(6) production process does not produce the three wastes: all round process does not produce waste liquid, waste residue, and the smell index meets national environmental standard after biological treatment.All raw materials remove the water vapour and the CO that discharge after treatment
2All become nutrition soil outward.
(7) resultant quality better: mud is after continuing 70 degree thermophilic fermentations, fermentation thoroughly, free from extraneous odour, the sterilization ovum that goes out is killed grass-seed, the nutrition soil that mud generates through biological fermentation, not only the organic content height, also have a large amount of probioticss, increase soil organic matter content, improve soil activation, improve soil physical chemistry, alleviate soil compaction; Promote crop growth, promote the crop precocity; Can also make the crop root prosperity, stem is thick, leaf is thick.Drought resisting, waterlogging-resistant, cold-resistant, resistant to lodging, diseases and insect pests resistance is strong, and obvious volume increase, the effect of increasing income are arranged.
(8) compoiste fertilizer of Sheng Chaning, different with chemical fertilizer is to carry out restoration of the ecosystem to barren soil, for soil provides enough organic matters, avoid the situation that hardens of soil to take place, reduced the possibility that insect pest takes place, reduced the usage quantity of agricultural chemicals, the guarantee people's is healthy and safe.
(9) present technique has solved the current mud problem of outlet that faces, and will improve surface water quality, is the requisite measure of water surrounding comprehensive improvement.Both protected environment, the Sustainable development for society provides good condition and necessary guarantee again.Economic development, social progress are had promoter action, and its social benefit is huge.In a word, this is a protection environment, builds the highly civilized health city, and the public utility works for the descendants benefits has obvious social.
Adopt biological enzyme technical finesse mud, the organic substance of difficult degradation is resolved into the small-molecule substance of readily biodegradable, reduce Pollutant levels greatly, reduce sludge volume, improve the removal effect of pollutent, shorten fermentation period, efficient foul smell and the moisture of removing in the mud, promote mud further softening, discharge available nutrient, in the mud heavy metal contamination materials such as deleterious lead, chromium, arsenic, mercury, cadmium are passivated or degrade, and have effectively killed pathogenic micro-organism in the mud and worm's ovum etc., for follow-up disposal and utilization create favorable conditions.
Adopt biological enzyme technical finesse disposing sludge, purpose is through biological degradation, makes the plant nutrient form more help the absorption of plant, also can eliminate stink, kill pathogenic bacteria and parasite on the other hand.Water ratio after the thickening is about delivers to the fermentation cabin fermentation after the mud of 60-80% and additive (bacterial classification, biological enzyme) mix, the biological enzyme dosage is 2 ‰-1%, stack turner operation every day once, material is moved to CD outlet by the warehouse entry mouth, with Middle pressure draught fan to the compost material intermittent aeration, because biological enzyme and aerobic bacteria effect, compost material can be warmed up to more than 60 ℃ after three days, in this process, the sludge fermentation time is shortened in the effect of biological enzyme performance efficient catalytic, keeps active principle, remove unwanted component, make the heavy metal passivation; Kept 2-3 days at 60-65 ℃, realize sterilization and exsiccant purpose, material stopped 7-9 days in in-vessel composting system, finished compost, transferred out in-vessel composting system.Because the efficient catalytic effect of biological enzyme, whole process does not produce foul smell substantially.Technical indicator: dehydration rate 40-45%; Good deodorization effect reaches no obvious peculiar smell; Mud-water separation is effective, and clear liquid drainage water index meets water quality standard; Economical effectiveness is superior.
Embodiment
A kind of biological enzyme is by polygalacturonase, proteolytic enzyme, lipase, cellulase, catalase, the diastatic composition; The massfraction of forming each component of this biological enzyme is: polygalacturonase 4-20%, proteinase 8-30%, lipase 8-30%, cellulase 8-25%, catalase 4-20%, amylase 5-25%.
The concrete grammar of handling excess sludge is:
1) mixes uniformly or contact preparing biological enzyme and microbial bacteria and mud, stir;
2) according to the water content of mud, can suitably regulate moisture content, the moisture content that regulates should be at 50-70%, and agglomerating to hold, a finger resilience energy gently scatters, and does not drip in the middle of the webs and is advisable;
3) treat sludge fermentation, after temperature rose to 50 degree, turning every day once stirred twice, and ferment got final product in 7-10 days.
Described microbial bacteria is made up of vinelandii 20%-30%, organophosphorus bacterium 20%-30%, inorganic phosphorus bacteria 15%-25%, potassium bacterium 20%-32%.
The quality of described interpolation biological enzyme accounts for 2 ‰-5% of sludge quality, and the amount of microbial bacteria accounts for 1 ‰-5% of sludge quality.
In the excess sludge process of Treating Municipal Sewage treatment plant, can add the plant refuse that contains C, wheat bran, one or more of depleted straw, the mud after the processing can be in order to produce fertilizer; In handling inland river mud, can add one or more of inorganic carrier component water, diatomite or construction waste fragment of brick.
Excess sludge after the processing can be used as produces organic composite fertilizer or agricultural soil.
Embodiment 1:
According to the disclosed concrete grammar of claim, adopt the biological enzyme technology to carry out the excess sludge of treatment and disposal municipal sewage plant, produce fertilizer.
Water ratio is about compound biological enzyme and the 1kg microbial strains that adds 2kg in the mud of 60-80% after the 1000kg thickening, wherein compound biological enzyme comprises polygalacturonase, proteolytic enzyme, lipase, cellulase, catalase, amylase etc., microbial strains comprises vinelandii, organophosphorus bacterium, inorganic phosphorus bacteria and potassium bacterium etc., and its each component ratio is: polygalacturonase 8%, proteolytic enzyme 13%, lipase 13%, cellulase 12%, catalase 8%, amylase 10%; Vinelandii 30%, organophosphorus bacterium 30%, inorganic phosphorus bacteria 15%, potassium bacterium 20%, discarded straw, wheat bran 5%.Deliver to the fermentation cabin fermentation after it is mixed, operation stack turner every day is once moved by the warehouse entry mouth material to CD outlet, with Middle pressure draught fan to the compost material intermittent aeration, because biological enzyme and aerobic bacteria effect, compost material can be warmed up to more than 60 ℃ after three days; Kept 3 days at 60-65 ℃, in the storehouse, stopped 9 days afterwards, finish compost, transfer out in-vessel composting system, through granulation, metering, wrapping machine warehouse-in, get final product fertilizer.
This kind fertilizer has efficiently kept the active principle in the mud through the biological enzyme effect, removes useless composition, and make heavy metal passivation in the mud, fermentation thoroughly, free from extraneous odour, the sterilization ovum that goes out is killed grass-seed, not only the organic content height, also have a large amount of probioticss.
Embodiment 2:
According to the disclosed concrete grammar of claim, adopt the biological enzyme technology to carry out the excess sludge of treatment and disposal municipal sewage plant, produce fertilizer.
Water ratio is about compound biological enzyme and the 2.5kg microbial strains that adds 5kg in the mud of 60-80% after the 1000kg thickening, wherein compound biological enzyme comprises polygalacturonase, proteolytic enzyme, lipase, cellulase, catalase, amylase etc., microbial strains comprises vinelandii, organophosphorus bacterium, inorganic phosphorus bacteria and potassium bacterium etc., and its each component ratio is: the portion rate in the compound biological enzyme is: polygalacturonase 20%, proteinase 8 %, lipase 30%, cellulase 8%, catalase 20%, amylase 14%; At 2.5kg microbial strains per-cent umber: wherein vinelandii 23%, organophosphorus bacterium 20%, inorganic phosphorus bacteria 25%, potassium bacterium 32%; Stalk 40%.1) mixes uniformly or contact preparing biological enzyme and microbial bacteria and mud, stir; 2) according to the water content of mud, can suitably regulate moisture content, the moisture content that regulates should be at 50-70%, and agglomerating to hold, a finger resilience energy gently scatters, and does not drip in the middle of the webs and is advisable; 3) treat sludge fermentation, after temperature rose to 50 degree, turning every day once stirred twice, and ferment got final product in 7 days.This kind fertilizer has efficiently kept the active principle in the mud through the biological enzyme effect, removes useless composition, and make heavy metal passivation in the mud, fermentation thoroughly, free from extraneous odour, the sterilization ovum that goes out is killed grass-seed, not only the organic content height, also have a large amount of probioticss.
Embodiment 3:
According to the disclosed concrete grammar of claim, adopt the biological enzyme technology to carry out the excess sludge of treatment and disposal municipal sewage plant, produce fertilizer.
Water ratio is about compound biological enzyme and the 50kg microbial strains that adds 50kg in the mud of 60-80% after the 1000kg thickening, wherein compound biological enzyme comprises polygalacturonase, proteolytic enzyme, lipase, cellulase, catalase, amylase etc., microbial strains comprises vinelandii, organophosphorus bacterium, inorganic phosphorus bacteria and potassium bacterium etc., and its each component ratio is: polygalacturonase 4%, protease 3 0%, lipase 8%, cellulase 25%, catalase 8%, amylase 25%; Vinelandii 20%, organophosphorus bacterium 29%, inorganic phosphorus bacteria 19%, potassium bacterium 32%, wheat bran, stalk 25%.Deliver to the fermentation cabin fermentation after it is mixed, operation stack turner every day is once moved by the warehouse entry mouth material to CD outlet, with Middle pressure draught fan to the compost material intermittent aeration, because biological enzyme and aerobic bacteria effect, compost material can be warmed up to more than 60 ℃ after three days; Kept 2-3 days at 60-65 ℃, in the storehouse, stopped 7-9 days afterwards, finish compost, transfer out in-vessel composting system, through granulation, metering, wrapping machine warehouse-in, get final product fertilizer.
This kind fertilizer has efficiently kept the active principle in the mud through the biological enzyme effect, removes useless composition, and make heavy metal passivation in the mud, fermentation thoroughly, free from extraneous odour, the sterilization ovum that goes out is killed grass-seed, not only the organic content height, also have a large amount of probioticss.
Embodiment 4:
According to the disclosed concrete grammar of claim, adopt the biological enzyme technology to carry out innoxious, minimizing treatment and disposal inland river mud.
The compound biological enzyme of adding 1% in the mud of inland river, wherein compound biological enzyme is made up of polygalacturonase, proteolytic enzyme, lipase, cellulase, catalase, amylase etc., its each component ratio is: polygalacturonase 20%, protease 3 0%, lipase 30%, cellulase 11 %, catalase 4%, amylase 5%, construction waste wall brick 40%.Pollution substance in the river course mud contacts with biological enzyme, and through catalyzed degradation, after 10 days, sludge volume reduces 8-10%, and after two weeks, after volume reduced 15%, one month, volume reduced more than 20%.Through certain hour, biological enzyme can carry out the efficient catalytic degraded as organic pollutant to the pollutent in the mud, and makes heavy metal stabilization by the sequestering action of enzyme, reduces sludge volume simultaneously, makes it innoxious and minimizing.
Embodiment 5:
According to the disclosed concrete grammar of claim, adopt the biological enzyme technology to carry out innoxious, minimizing treatment and disposal inland river mud.
Section width average 4.8m, long 102m city inland river are administered in certain inland river.Before the improvement, the water body muddiness in the river course, bottom sludge are black mud, the about 60cm of thickness, and the 10m scope can smell tangible stink in the distance river course.Dropping into composite compound biological enzyme is made up of polygalacturonase, proteolytic enzyme, lipase, cellulase, catalase, amylase, phytase etc., its each component ratio is: polygalacturonase 19%, proteolytic enzyme 13%, lipase 24%, cellulase 23%, catalase 7%, amylase 5%, phytase 9%, construction waste sandstone 5%.Added the biological enzyme scavenging agent 10 days afterwards, and administered the section stink and disappear, many microfaunas occur, the mud in the riverbed has changed oxygen condition into from anaerobic state.28 days, it is clear that river water quality becomes, and silt seam slightly reduces.50 days, mud mud face reduced 8cm, and it is light that the mud color is changeed.Two months, lesser fry appearred in the river course, and silt seam reduces above 12cm.Three month, lesser fry increased, and mud mud face reduces more than the 20cm; The mud mud face of administering section begins to present canescence, and water quality visibility meter reaches 4/5, and part is administered visible bottom, the section river course grains of sand.4-6 is individual month behind the additional input prozyme catalyzer: administering section has small fish, and the mud face is canescence, and the mud face had reduced 25-30 cm bottom gushed in the river.
Embodiment 6:
According to the disclosed concrete grammar of claim, adopt the biological enzyme technology to carry out innoxious, minimizing treatment and disposal industry organic sludge.Certain waste water processing station of large-scale food company, 3500 tons of day processing slaughterhouse wastewaters, on average every day, sludge output was 10 tons, this mud can be used as the field fertilizer through processing and uses.Treating processes: with the excess sludge in sewage works preliminary sedimentation tank and the second pond by being pumped in the sludge treatment pond, simultaneously with prozyme catalyzer 4%, microbial bacteria 4% evenly is added in the sludge treatment pond, each component ratio of prozyme is: polygalacturonase 17%, proteolytic enzyme 25%, lipase 25%, cellulase 21%, catalase 5%, amylase 7%, vinelandii 24%, organophosphorus bacterium 23%, inorganic phosphorus bacteria 23%, potassium bacterium 30%, discarded shell, skin slag 21%.1) mixes uniformly or contact preparing biological enzyme and microbial bacteria and mud, stir, leave standstill and handled 5-10 individual hour; 2) according to the water content of mud, can suitably regulate moisture content, the moisture content that regulates should be at 50-70%, and agglomerating to hold, a finger resilience energy gently scatters, and does not drip in the middle of the webs and is advisable; 3) treat sludge fermentation, after temperature rose to 50 degree, turning every day once stirred twice, and ferment got final product in 10 days.Dewater through equipment pressure filter commonly used, mud-water separation obtains water ratio and is lower than 50% mud cake again, and the packing entrucking is cleared and sent the field to do agricultural fertilizer.This kind biocatalysis is handled fertilizer through the biological enzyme effect, has efficiently kept the active principle in the mud, removes or transform useless composition, and make heavy metal passivation in the mud, catalytic efficiency height, free from extraneous odour, the sterilization ovum that goes out, not only the organic content height, also have a large amount of probioticss.Processing cost is low, easy and simple to handle simultaneously.The present invention is novel, and with this kind biological enzyme treatment and disposal mud technology, effective, efficient height and cost are low, and stability is strong, and is easy and simple to handle, can make sludge reduction, stabilization, innoxious, resource utilization after the processing.
Embodiment 7
According to the disclosed concrete grammar of claim, adopt the biological enzyme technology to carry out innoxious, minimizing treatment and disposal inland river mud.Section width average 4.8m, long 102m city inland river are administered in certain inland river.Before the improvement, the water body muddiness in the river course, bottom sludge are black mud, the about 60cm of thickness, and the 10m scope can smell tangible stink in the distance river course.Drop into composite compound biological enzyme by polygalacturonase, proteolytic enzyme, lipase, cellulase, catalase, amylase, phytase, laccase, zytase are formed, its each component ratio is: polygalacturonase 19%, proteolytic enzyme 13%, lipase 24%, cellulase 23%, catalase 7%, amylase 5%, phytase 9%, laccase 10%, zytase 5%, mineral salts 5%.
Above-mentioned only is several specific embodiment of the present invention, but design concept of the present invention is not limited thereto, and allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection domain of the present invention.
Claims (10)
1. the application of biological enzyme in the excess sludge treatment and disposal, be primarily characterized in that: this biological enzyme is a kind of compound biological enzyme, is made up of polygalacturonase, proteolytic enzyme, lipase, cellulase, catalase, amylase.
2. biological enzyme as claimed in claim 1, be primarily characterized in that: the massfraction of forming each component of this compound biological enzyme is: polygalacturonase 4-20%, proteinase 8-30%, lipase 8-30%, cellulase 8-25%, catalase 4-20%, amylase 5-25%.
3. biological enzyme as claimed in claim 1, be primarily characterized in that: also can add in phytase, laccase, dextranase, zytase, saccharifying enzyme, Pullulanase and the mannase one or more in the described prozyme, addition accounts for the 4-30% of prozyme quality.
4. the application of biological enzyme in the excess sludge treatment and disposal, be primarily characterized in that: utilize the biocatalytic Activity efficiently of biological enzyme to handle excess sludge, utilize zymotechnic with the foul smell molecular breakdown in the mud, disappear smelly, and utilize the mineral acid of its generation to form sour environment and fermenting process hot environment, kill pathogenic bacteria, worm's ovum, the young, the sequestering action that utilizes biological enzyme is with the heavy metal ion stabilization in the mud, by enzyme catalysis mud, make the muddy water sharp separation, a large amount of supernatant liquors is discharged, reduce sludge volume, realized minimizing; By the biological enzyme effect long chain molecule in the mud is transformed into short chain molecule, polysaccharide, Mierocrystalline cellulose are transformed into protein, amino acid keeps the nutrition composition that fertilizer needs, and improves fertilizer efficiency and can shorten fermentation period simultaneously.
5. the application of biological enzyme as claimed in claim 4 in the excess sludge treatment and disposal, be primarily characterized in that: the biocatalytic Activity efficiently of utilizing biological enzyme, the excess sludge that can be used for Treating Municipal Sewage treatment plant, inland river mud and industrial organic sludge.
6. the application of biological enzyme as claimed in claim 4 in the excess sludge treatment and disposal is primarily characterized in that: the concrete grammar of handling excess sludge is:
1) biological enzyme for preparing and mud are mixed uniformly or contact, stir;
2) according to the water content of mud, can suitably regulate moisture content, the moisture content that regulates should be at 50-70%, and agglomerating to hold, a finger resilience energy gently scatters, and does not drip in the middle of the webs and is advisable;
3) treat sludge fermentation, after temperature rose to 50 degree, turning every day once stirred twice, and ferment got final product in 7-10 days.
7. the application of biological enzyme as claimed in claim 6 in the excess sludge treatment and disposal, be primarily characterized in that: can add microbial bacteria in described claim 6 step 1), microbial bacteria is mixed and is formed by vinelandii 20%-30%, organophosphorus bacterium 20%-30%, inorganic phosphorus bacteria 15%-25%, potassium bacterium 20%-32%.
8. the application of biological enzyme as claimed in claim 6 in the excess sludge treatment and disposal, be primarily characterized in that: the quality of described interpolation biological enzyme accounts for 2 ‰-5% of sludge quality, and the amount of microbial bacteria accounts for 1 ‰-5% of sludge quality.
9. one kind as claim 1,2,3,4,5 or 6 application of described biological enzyme in the excess sludge treatment and disposal, be primarily characterized in that: in the excess sludge process of Treating Municipal Sewage treatment plant, can add the plant refuse that contains C, wheat bran, one or more of depleted straw, addition is the 5%-40% of biological enzyme quality, and the mud after the processing can be in order to produce fertilizer; In handling inland river mud, can add the inorganic carrier component, one or more of water, diatomite or construction waste fragment of brick, addition are the 5%-40% of biological enzyme quality.
10. the application of biological enzyme as claimed in claim 6 in the excess sludge treatment and disposal is primarily characterized in that: the excess sludge after the processing can be used as produces organic composite fertilizer or agricultural soil.
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