CN112592028A - Mushroom dreg dehydration conditioner for pharmaceutical sludge pretreatment and application method - Google Patents
Mushroom dreg dehydration conditioner for pharmaceutical sludge pretreatment and application method Download PDFInfo
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- CN112592028A CN112592028A CN202011588688.1A CN202011588688A CN112592028A CN 112592028 A CN112592028 A CN 112592028A CN 202011588688 A CN202011588688 A CN 202011588688A CN 112592028 A CN112592028 A CN 112592028A
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
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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
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/343—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the pharmaceutical industry, e.g. containing antibiotics
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Abstract
The invention discloses a mushroom dreg dehydration conditioner for pharmaceutical sludge pretreatment and an application method thereof. The mushroom dreg dehydration conditioner is composed of the following raw materials in parts by weight: 2-5 parts of polyaluminium chloride, 30-40 parts of biomass solid waste and 0.2-1 part of polyacrylamide. The mushroom dreg dehydration conditioner for the pharmaceutical sludge pretreatment can realize dry solidification of mushroom dregs at normal temperature, so that the water content of the mushroom dregs can be reduced to about 50%, the cost of mushroom dreg dehydration is reduced, the environmental pollution caused by secondary fermentation of the mushroom dregs is avoided, the storage and transportation of fermented mushroom dregs are facilitated, the problems of high mushroom dreg resource utilization and harmless treatment cost are solved, and a new method is provided for solidification dehydration and further resource utilization of the mushroom dregs.
Description
Technical Field
The invention relates to the technical field of fermentation pharmaceutical sludge pretreatment, in particular to a mushroom dreg dehydration conditioner for pharmaceutical sludge pretreatment and an application method thereof.
Background
Fermentation pharmaceutical enterprises can produce a large amount of pharmaceutical sludge, namely waste mushroom dregs, in the production process, and the main components of the waste mushroom dregs are mycelium of drug-producing mushrooms, unused culture medium, metabolites produced in the fermentation process, degradation products of the culture medium, a small amount of active ingredients of drugs and the like. The water content of the bio-pharmaceutical fungus residues is generally 70-93%, the content of crude protein in dry basis is 30-52%, and the content of crude fat is 2-20%. The residual culture medium, antibiotic matrix and degradation products thereof in the mushroom dregs have potential harmfulness to the ecological environment and human health, and become the key point of environmental management in the antibiotic pharmaceutical industry.
In 2002, the department of agriculture, the department of health and the like in China jointly release a catalog of drug varieties forbidden to be used in feed and animal drinking water, and antibiotic filter residues are listed in the catalog; the 'national hazardous waste record' revised in 2016 definitely lists that 'mother liquor and reaction medium or culture medium waste in the production process of chemical bulk drugs' is HW02 medical waste, and safety disposal is carried out according to the medical hazardous waste, and the regulation further limits the treatment and disposal ways of the bio-pharmaceutical fungus residues as feed additives and organic fertilizers; research, development and popularization are encouraged in the technical policy of pollution prevention and control in the pharmaceutical industry, which is implemented in 2012, namely a recycling technology, a harmless treatment technology and a comprehensive utilization technology of fermentation fungus residues in a production process and a comprehensive utilization technology in a hazardous waste factory. The pressure on the aspect of bacterial residue disposal of pharmaceutical enterprises is increased while the environmental protection is enhanced by related policy and regulations, and how to realize reasonable and effective utilization and safe disposal of the biopharmaceutical bacterial residue becomes a problem to be solved urgently in the national pharmaceutical industry.
The difficulty of the prior art fungus dreg treatment lies in the dehydration link of the fungus dreg, because the moisture content of the wet fungus dreg is high, the secondary fermentation is easy to cause because the wet fungus dreg is not dehydrated in time or is not dehydrated completely, but because the wet fungus dreg has the characteristics of high organic matter content, low free water content, high vegetable oil content and the like, the dehydration is difficult, and even after the treatment of centrifugation, filter pressing and the like, the moisture content is still about 80 percent.
The neomycin sulfate bacterial slag is a byproduct of neomycin sulfate fermentation, has complex components and consists of a small amount of neomycin sulfate, heavy metals, fermentation bacteria, polycyclic aromatic hydrocarbons and other organic matters. The water content of the mushroom dregs is high, the contents of inorganic components, polycyclic aromatic hydrocarbon and heavy metal are low, the contents of protein, fat and cellulose are high, and the content of C element in the mushroom dregs is more than 30%. Untreated neomycin sulfate bacteria residues can be subjected to secondary fermentation after being placed for a period of time, so that the bacteria residues become sticky, thin and stink, the surrounding environment is seriously damaged, and the storage and transportation of the bacteria residues are difficult. Most of the moisture in the neomycin sulfate mushroom dregs exists in the mycelium or is adsorbed on the surface of the mycelium, a large amount of moisture exists in the form of colloidal water, and the content of free water is very low, so that the moisture in the mushroom dregs cannot be effectively removed by conventional filter pressing and centrifugation. Although the mushroom dregs can be completely dried by adopting the heating dehydration method, the treatment process has high energy consumption and high treatment cost. The direct incineration of the fermentation mushroom dregs is also a method for treating the neomycin sulfate fermentation mushroom dregs, but because the mushroom dregs have high water content and the additional fuel is needed to supplement the calorific value, the direct incineration treatment cost is too high (about 2000 yuan/ton wet mushroom dregs), and the large-scale industrialization is difficult.
The dehydration performance of the mushroom dregs can be improved to a certain extent by adding a conditioner before dehydration, for example, Chinese patent CN103285662B discloses a method for efficiently dehydrating midecamycin mushroom dregs, which adopts ferric trichloride accounting for 1.6-6.5% of the dry weight of the mushroom dregs, polyaluminium chloride accounting for 10.4-27.5%, rice hull powder accounting for 20-40% and polyacrylamide accounting for 0.03-0.1% as a conditioner, and the water content of the mushroom dregs after high-pressure dehydration is reduced to about 55%. Although the patent obtains good dehydration effect, a large amount of polyaluminium chloride and ferric trichloride are used, so that the production cost is increased, and the content of chloride ions and aluminum ions in the wastewater is increased, thereby causing secondary pollution.
Therefore, the research on the novel mushroom dreg dehydration conditioner has important significance for solving the problems of secondary fermentation, difficult storage and transportation, high dehydration cost, resource utilization and high harmless treatment cost of mushroom dreg.
Disclosure of Invention
The invention mainly aims to provide a mushroom dreg dehydration conditioner for pretreatment of pharmaceutical sludge and an application method thereof.
In order to realize the aim, the invention provides a mushroom dreg dehydration conditioner for pharmaceutical sludge pretreatment, which comprises the following components in part by weight:
a bacterial dreg dehydration conditioner for pharmaceutical sludge pretreatment is composed of the following raw materials in parts by weight:
2-5 parts of polyaluminium chloride, 30-40 parts of biomass solid waste and 0.2-1 part of polyacrylamide, wherein the raw materials are stored separately;
the content of crude fibers in the biomass solid waste is more than 35%.
Preferably, the biomass solid waste is one or more of modified wood chips and corncob meal.
Preferably, the biomass solid waste is modified wood chips, or a combination of modified wood chips and other biomass solid waste.
Preferably, the particle size of the biomass solid waste is less than 1 mm.
The polyacrylamide is emulsion polyacrylamide.
The mushroom dregs are neomycin sulfate mushroom dregs.
The usage amount of the mushroom dreg conditioner is 32.2-46% of the dry weight of the neomycin sulfate mushroom dreg.
The application method of the bacterial dreg dehydration conditioner for the pretreatment of the pharmaceutical sludge comprises the following steps:
s1, firstly, adding polyaluminum chloride accounting for 2-5% of dry weight of mushroom dregs into wet mushroom dregs, and stirring for more than 15 min;
s2, adding biomass solid waste accounting for 30-40% of dry weight of the mushroom dregs, and continuously stirring for more than 15 min;
s3, finally adding polyacrylamide accounting for 0.2-1% of the dry weight of the mushroom dregs, and continuously stirring for more than 15 min;
and S4, performing pressure filtration to obtain the dehydrated mushroom residues.
And S4, the filter pressing pressure is 1.2-1.5 Mpa, and the time is 60-90 min.
The filter pressing equipment is a high-pressure plate-and-frame filter press, the feeding pressure is 0.6-1.0 Mpa, and the feeding time is 60-90 min.
According to the invention, the safe and environment-friendly biomass solid waste is compounded with the polyaluminium chloride and the polyacrylamide, so that the use amount of the polyaluminium chloride is reduced, ferric trichloride is not required, the biomass solid waste with larger use amount and the dehydrated mushroom dregs can be mixed for use, and no adverse effect is generated on resource utilization of the mushroom dregs. The mushroom dreg dehydration conditioner for the pharmaceutical sludge pretreatment can realize dry solidification of mushroom dregs at normal temperature, so that the water content of the mushroom dregs can be reduced to about 50%, the cost of mushroom dreg dehydration is reduced, the environmental pollution caused by secondary fermentation of the mushroom dregs is avoided, the storage and transportation of fermented mushroom dregs are facilitated, the problems of high mushroom dreg resource utilization and harmless treatment cost are solved, and a new method is provided for solidification dehydration and further resource utilization of the mushroom dregs.
Detailed Description
The invention provides a mushroom dreg dehydration conditioner for pretreatment of pharmaceutical sludge, which is prepared from the following raw materials in parts by weight:
2-5 parts of polyaluminium chloride, 30-40 parts of biomass solid waste and 0.2-1 part of polyacrylamide; the raw materials are stored separately, so that the raw materials are prevented from being mixed to react and influence the performance; wherein the content of crude fiber in the biomass solid waste is required to be more than 35%.
Polyaluminium chloride can take place the hydrolysis, generates iron hydroxide, aluminium hydroxide colloid, and it has good adsorptivity, can adsorb the suspended solid in the aquatic and with its coagulation sedimentation to reach the effect of flocculation and precipitation, this application adopts industry aluminium chloride can.
The biomass solid waste mainly comprises crude fiber, lignin and the like, and when the content of the crude fiber in the waste is more than 35%, suspended matters can be condensed through a bridging effect, so that rapid conditioning is realized; in addition, the natural air drying speed of the mushroom dreg cake can be increased, and the plant oil can be adsorbed.
The polyacrylamide is preferably emulsion polyacrylamide, and the emulsion polyacrylamide is formed by accurately regulating and controlling the molecular weight and the charge density of a polymer by an advanced process, and mainly plays a role in adsorbing and bridging to change small particles into large particles, so that the settling property of the flocculating constituent is improved. The performance is superior, and the flocculation effect and the water filtration performance are better than those of common solid PAM.
The polyaluminium chloride, the biomass solid waste and the polyacrylamide are used together, so that the electrostatic repulsion and hydration among bacteria residue particles can be reduced, and the polyaluminium oxide has a high-charge polymeric cyclic chain body with a Keggin structure, has high electric neutralization and bridging effects on the bacteria residues, and is used for coagulating the bacteria residues; the biomass solid waste and the sludge form a certain rigid skeleton structure through electrostatic crosslinking, so that the sludge cake can still keep permeability when compressed by external force, and the overflow of moisture is facilitated; adding polyacrylamide to make the destabilized colloidal particles grow up rapidly through bridging and net catching, so as to flocculate the mushroom dregs. Wherein the solid waste of living beings can also adsorb a large amount of vegetable oil contents of fungus sediment, when filtering through the high pressure, solidify a large amount of oil in solid state material the inside, prevent that oil from reducing filter cloth air permeability through the filter cloth extrusion, influence the dehydration effect, this application adopts the solid waste of living beings of safety ring guarantor and polyaluminium chloride, polyacrylamide complex use, the use amount of polyaluminium chloride has not only been reduced, and need not use ferric trichloride, and the great solid waste of living beings of use amount can the mixed use with the fungus sediment after the dehydration, do not produce any adverse effect to the utilization of fungus sediment resourceization. The bacterial slag dehydration conditioner for the pretreatment of the pharmaceutical sludge can realize dry solidification of the bacterial slag at normal temperature, reduce the water content of the bacterial slag to about 50 percent, reduce the cost of bacterial slag dehydration, avoid environmental pollution caused by secondary fermentation of the bacterial slag, facilitate the storage and transportation of fermented bacterial slag, and solve the problems of high cost of bacterial slag resource utilization and harmless treatment.
The biomass solid waste of the invention preferably adopts one or more of modified wood chips and corncob meal. The modified sawdust can be grafted with fatty acid and other methods, so that the oil adsorption performance of the modified sawdust is further improved, and the modified sawdust can be used independently or combined with other biomass solid wastes and has a better effect. The corncob powder has the advantages of high porosity, large specific surface area, rich lignin and crude fiber content, good toughness and proper hardness, and can be combined with modified wood chips to adjust the porosity, air permeability, hardness and the like of a system, further improve a rigid structure formed by the corncob powder and pharmaceutical sludge and improve the dehydration effect. The rice hull powder is rice hull powder, the content of crude fiber of the rice hull powder is lower than that of sawdust, but the rice hull powder can achieve the effect of adjusting the porosity of a system and the like by being comprehensively used with the sawdust. When the corn cob powder, the rice bran powder and the modified sawdust are used comprehensively, the dosage of the corn cob powder or the rice bran powder is preferably less than one half of that of the modified sawdust.
Preferably, the mushroom dregs are neomycin sulfate mushroom dregs, and because the mushroom dregs contain more colloidal water and vegetable oil, the mushroom dregs are difficult to completely dehydrate by adopting a conventional dehydration conditioner, the conditioner compounded with the biomass solid waste can promote the effects of adsorption bridging and flocculation agglomeration of the mushroom dregs, adsorb a large amount of vegetable oil components of the neomycin sulfate mushroom dregs, and reduce the water content of the neomycin sulfate mushroom dregs to about 50 percent after high-pressure filter pressing.
Preferably, the using amount of the mushroom dreg conditioner is 32.2-46% of the dry weight of the wet mushroom dreg, and within the range, a good dehydration effect can be achieved, and the cost can be reduced as far as possible.
The application method of the bacterial dreg conditioner for the pretreatment of the pharmaceutical sludge comprises the following steps:
s1, firstly, adding polyaluminum chloride accounting for 2-5% of dry weight of mushroom dregs into wet mushroom dregs, and stirring for more than 15 min;
s2, adding biomass solid waste accounting for 30-40% of dry weight of the mushroom dregs, and continuously stirring for more than 15 min;
s3, finally adding polyacrylamide accounting for 0.2-1% of the dry weight of the mushroom dregs, and continuously stirring for more than 15 min;
and S4, performing pressure filtration to obtain the dehydrated mushroom residues.
Sequentially adding polyaluminium chloride, biomass solid waste and polyacrylamide into the bacterial slag, and coagulating the bacterial slag by virtue of high-degree electric neutralization and bridging of the polyaluminium oxide; then adding biomass solid waste to adsorb a large amount of vegetable oil in the mushroom dregs, and forming a certain rigid skeleton structure with the sludge through electrostatic crosslinking so as to destabilize mushroom dreg flocs; finally, polyacrylamide is added to ensure that the destabilized colloidal particles grow up rapidly through the bridging action and the net catching action, so that the mushroom dregs are flocculated and are dehydrated through filter pressing, thereby achieving the purpose of thoroughly dehydrating the mushroom dregs.
Preferably, the pressure filtration pressure of the step S4 is 1.2-1.5 Mpa, the time is 60-90 min, and the dehydration of the mushroom dregs is more facilitated under a certain high pressure.
Preferably, the filter pressing equipment is a high-pressure plate-and-frame filter press, the feeding pressure is 0.6-1.0 Mpa, and the feeding time is 60-90 min.
Example 1
A bacterial dreg dehydration conditioner for pharmaceutical sludge pretreatment is composed of the following raw materials in parts by weight: 4 parts of polyaluminium chloride, 40 parts of biomass solid waste (modified wood chips with the average particle size of less than 0.4 mm) and 0.3 part of polyacrylamide emulsion, wherein the 3 components are stored separately.
A pharmaceutical factory in Hubei is a medium-sized preparation enterprise for researching and producing antibiotic raw material medicines, veterinary medicines, amino acid raw materials and serial preparations, and the bacterial residues of the enterprise are neomycin sulfate bacterial residues. Taking mushroom dregs (wet mushroom dregs 200 m/d, water content 95.2%) of the company as a processing object, and taking a mushroom dreg dehydration conditioner with 44.3% of dry weight of the mushroom dregs for dehydration treatment, wherein the specific steps are as follows:
conveying the bacterial residues into a conditioning tank through a sludge pump, adding polyaluminum chloride (accounting for 4% of the dry weight of the bacterial residues) in a conditioner into the conditioning tank through a metering pump, and stirring for 15 min; then adding the biomass solid waste (accounting for 40% of the dry weight of the mushroom dregs) in the conditioner into a conditioning pool through a spiral conveyer conditioner, and stirring for 15 min; finally, adding the polyacrylamide emulsion (accounting for 0.3 percent of the dry weight of the mushroom dregs) into a conditioning pool through a metering pump, and stirring for 15 min; conveying the conditioned mushroom dregs into a high-pressure diaphragm plate frame through a high-pressure screw pump for dehydration, wherein the feeding pressure is 1.0MPa, and the feeding time is 60 min; the squeezing pressure is 1.5MPa, and the squeezing time is 60 min; and finally obtaining the water content of the dehydrated mushroom dregs of 50.4 percent.
Example 2
A bacterial dreg dehydration conditioner for pharmaceutical sludge pretreatment is composed of the following raw materials in parts by weight: 3.5 parts of polyaluminium chloride, 35 parts of biomass solid waste (modified wood chips with the average particle size of less than 0.4 mm) and 0.5 part of polyacrylamide emulsion, wherein the 3 components are stored separately.
A certain biotechnology and technology corporation limited in Shandong province is a biomedical enterprise which is specialized in research, development and production of novel steroid hormone drug core intermediates and derivatives. The company has five series of biological steroid medicine raw materials of androstenedione, nonahydroxyandrostenedione, androstenedione and the like. Taking mushroom dreg (wet mushroom dreg 500m, water content 94.5%) of the company as a processing object, and taking a mushroom dreg dehydration conditioner with 39% of dry weight of mushroom dreg for dehydration treatment, wherein the dehydration treatment is as follows:
conveying the bacterial residues into a conditioning tank through a sludge pump, adding polyaluminum chloride (accounting for 3.5 percent of the dry weight of the bacterial residues) in a conditioner into the conditioning tank through a metering pump, and stirring for 15 min; then adding the biomass solid waste (accounting for 35% of the dry weight of the mushroom dregs) in the conditioner into a conditioning pool through a spiral conveyer conditioner, and stirring for 15 min; finally, adding the polyacrylamide emulsion (accounting for 0.5 percent of the dry weight of the mushroom dregs) into a conditioning pool through a metering pump, and stirring for 15 min; conveying the conditioned mushroom dregs into a high-pressure diaphragm plate frame through a high-pressure screw pump for dehydration, wherein the feeding pressure is 1.0MPa, and the feeding time is 90 min; the squeezing pressure is 1.5MPa, and the squeezing time is 60 min; the water content of the dehydrated mushroom dregs is finally 52.8%.
Example 3
A bacterial dreg dehydration conditioner for pharmaceutical sludge pretreatment is composed of the following raw materials in parts by weight: 2 parts of polyaluminium chloride, 30 parts of biomass solid waste (modified sawdust: rice chaff powder is 2:1, g/g, and the average particle size is less than 1 mm), and 0.8 part of polyacrylamide emulsion, wherein the 3 parts are stored separately.
Taking neomycin sulfate mushroom dregs (wet mushroom dregs 200 m/d, water content 95.2%) of a certain company as a processing object, taking a mushroom dreg dehydration conditioner with 32.8% of mushroom dreg dry weight, and performing dehydration treatment, wherein the method specifically comprises the following steps:
conveying the bacterial residues into a conditioning tank through a sludge pump, adding polyaluminum chloride (accounting for 2% of the dry weight of the bacterial residues) in a conditioner into the conditioning tank through a metering pump, and stirring for 15 min; then adding the biomass solid waste (accounting for 30% of the dry weight of the mushroom dregs) in the conditioner into a conditioning pool through a screw conveyor conditioner, and stirring for 15 min; finally, adding the polyacrylamide emulsion (accounting for 0.8 percent of the dry weight of the mushroom dregs) into a conditioning pool through a metering pump, and stirring for 15 min; conveying the conditioned mushroom dregs into a high-pressure diaphragm plate frame through a high-pressure screw pump for dehydration, wherein the feeding pressure is 0.6MPa, and the feeding time is 90 min; the squeezing pressure is 1.2MPa, and the squeezing time is 90 min.
Example 4
A bacterial dreg dehydration conditioner for pharmaceutical sludge pretreatment is composed of the following raw materials in parts by weight: 5 parts of polyaluminium chloride, 35 parts of biomass solid waste (corn cob powder: modified wood chips are 3:5, g/g, and the average particle size is less than 1 mm), and 0.2 part of polyacrylamide emulsion, wherein the 3 parts are stored separately.
Taking neomycin sulfate mushroom dregs (wet mushroom dregs 200 m/d, water content 95.2%) of a certain company as a processing object, taking a mushroom dreg dehydration conditioner with 40.2% of mushroom dreg dry weight, and performing dehydration treatment, wherein the method specifically comprises the following steps:
conveying the bacterial residues into a conditioning tank through a sludge pump, adding polyaluminum chloride (accounting for 5% of the dry weight of the bacterial residues) in a conditioner into the conditioning tank through a metering pump, and stirring for 15 min; then adding the biomass solid waste (accounting for 35% of the dry weight of the mushroom dregs) in the conditioner into a conditioning pool through a spiral conveyer conditioner, and stirring for 15 min; finally, adding the polyacrylamide emulsion (accounting for 0.2 percent of the dry weight of the mushroom dregs) into a conditioning pool through a metering pump, and stirring for 15 min; conveying the conditioned mushroom dregs into a high-pressure diaphragm plate frame through a high-pressure screw pump for dehydration, wherein the feeding pressure is 0.8MPa, and the feeding time is 75 min; the squeezing pressure is 1.4MPa, and the squeezing time is 75 min.
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Claims (10)
1. The mushroom dreg dehydration conditioner for the pretreatment of the pharmaceutical sludge is characterized by comprising the following raw materials in parts by weight:
2-5 parts of polyaluminium chloride, 30-40 parts of biomass solid waste and 0.2-1 part of polyacrylamide, wherein the raw materials are stored separately;
the content of crude fibers in the biomass solid waste is more than 35%.
2. The bacterial dreg dehydration conditioner for the pretreatment of pharmaceutical sludge according to claim 1,
the biomass solid waste is one or more of modified wood chips and corncob meal.
3. The bacterial dreg dehydration conditioner for the pretreatment of pharmaceutical sludge according to claim 2,
the biomass solid waste is modified wood chips or the combination of the modified wood chips and other biomass solid waste.
4. The bacterial dreg dehydration conditioner for the pretreatment of pharmaceutical sludge according to claim 1,
the particle size of the biomass solid waste is less than 1 mm.
5. The bacterial dreg dehydration conditioner for the pretreatment of pharmaceutical sludge according to claim 1,
the polyacrylamide is emulsion polyacrylamide.
6. The bacterial dreg dehydration conditioner for the pretreatment of pharmaceutical sludge according to any one of claims 1 to 5,
the mushroom dregs are neomycin sulfate mushroom dregs.
7. The bacterial dreg dehydration conditioner for pharmaceutical sludge pretreatment as set forth in claim 6,
the usage amount of the mushroom dreg conditioner is 32.2-46% of the dry weight of the neomycin sulfate mushroom dreg.
8. The application method of the bacterial dreg dehydration conditioner for the pretreatment of the pharmaceutical sludge according to any one of claims 1 to 7, comprising the following steps:
s1, firstly, adding polyaluminum chloride accounting for 2-5% of dry weight of mushroom dregs into wet mushroom dregs, and stirring for more than 15 min;
s2, adding biomass solid waste accounting for 30-40% of dry weight of the mushroom dregs, and continuously stirring for more than 15 min;
s3, finally adding polyacrylamide accounting for 0.2-1% of the dry weight of the mushroom dregs, and continuously stirring for more than 15 min;
and S4, performing pressure filtration to obtain the dehydrated mushroom residues.
9. The method of claim 8, wherein the step of applying the bacterial sludge dewatering conditioner for the pretreatment of the pharmaceutical sludge comprises,
and S4, the filter pressing pressure is 1.2-1.5 Mpa, and the time is 60-90 min.
10. The method of claim 9, wherein the step of applying the bacterial sludge dewatering conditioner for the pretreatment of the pharmaceutical sludge comprises,
the filter pressing equipment is a high-pressure plate-and-frame filter press, the feeding pressure is 0.6-1.0 Mpa, and the feeding time is 60-90 min.
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|---|---|---|---|---|
| CN113860967A (en) * | 2021-11-16 | 2021-12-31 | 陕西麦可罗生物科技有限公司 | Device and method for treating biological fermentation fungus residues |
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