CN108455805B - Preparation method of sludge recycling agent - Google Patents
Preparation method of sludge recycling agent Download PDFInfo
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- CN108455805B CN108455805B CN201810289189.9A CN201810289189A CN108455805B CN 108455805 B CN108455805 B CN 108455805B CN 201810289189 A CN201810289189 A CN 201810289189A CN 108455805 B CN108455805 B CN 108455805B
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- dissolving
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- sludge
- stirring
- dissolving tank
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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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/01—Waste products, e.g. sludge
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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
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
Abstract
The invention discloses a preparation method of a sludge recycling agent, and belongs to the technical field of sludge recycling agents. The method comprises the following process steps of 1) putting polyoxyethylene octyl phenol ether-10 and sodium dodecyl sulfate into a dissolving tank, adding water and stirring to obtain a standby material A; adding water into chitin, and dissolving in a dissolving tank to obtain a standby material B; 2) adding the standby material A and the standby material B into a dissolving tank and fully stirring for standby; 3) putting aluminum sulfate into a dissolving tank, adding water for dissolving, and taking the aluminum sulfate as a standby material D; 4) putting the alkyl ketene dimer into a dissolving tank, and stirring and dissolving in water at 40-90 ℃ to obtain a spare material C; 5) adding an emulsifier and a dispersant into water at the temperature of 30-90 ℃, and stirring and dissolving to obtain a spare material E; 6) and adding the spare material C, the spare material D and the spare material C into the dissolving tank in the step 2, stirring, homogenizing by a homogenizer, cooling and barreling. The process is simple and easy to implement, convenient to control, high in production efficiency and high in raw material utilization rate.
Description
Technical Field
The invention relates to a preparation method of a sludge recycling agent, belonging to the technical field of sludge recycling agents.
Background
Sludge is a solid or semi-solid substance produced after sewage treatment, which contains a large amount of organic debris, bacteria, inorganic particles, colloids, and the like. According to measurement and calculation, an enterprise needs to spend 38 yuan for processing one ton of sludge, and particularly, as the landfill land for processing the sludge is increasingly tense, the landfill transportation distance is longer and longer, and the cost starts to rise continuously.
Different from sewage purification treatment, the sludge is not only large in quantity but also difficult to treat, which troubles various industries including urban sludge treatment, currently, the main treatment and disposal modes of the sludge in China comprise landfill, composting, incineration, building material manufacturing and the like, and the landfill is the most main mode of sludge disposal. However, the increasingly scarce land space, especially the sequelae of secondary pollution of atmosphere and underground water caused by sludge filling, makes the disposal method of landfill end up today with higher and higher environmental protection requirements. At present, not only is the problem of the landfill cost of the sludge solved, but also the path of the sludge landfill is close to blockage. Therefore, a low-cost and high-efficiency sludge treatment technology is in need of reality.
Disclosure of Invention
The invention aims to provide a preparation method of a sludge recycling agent, which can be used for preparing the sludge recycling agent to recycle sludge after environment-friendly treatment, thereby realizing low-cost and high-efficiency treatment of the sludge.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for preparing a sludge recycling agent, which comprises the following process steps,
1) putting polyoxyethylene octyl phenol ether-10 and sodium dodecyl sulfate into a dissolving tank, adding water and stirring to obtain a standby material A; adding water into chitin, and dissolving in a dissolving tank to obtain a standby material B;
2) adding the standby material A and the standby material B into a dissolving tank and fully stirring for standby; the volume ratio of the standby material A to the standby material B is as follows.
3) Putting aluminum sulfate into a dissolving tank, adding water for dissolving, and taking the aluminum sulfate as a standby material D;
4) putting the alkyl ketene dimer into a dissolving tank, and stirring and dissolving in water at 40-90 ℃ to obtain a spare material C;
5) adding an emulsifier and a dispersant into water at the temperature of 30-90 ℃, and stirring and dissolving to obtain a spare material E;
6) and adding the spare material C, the spare material D and the spare material E into the dissolving tank in the step 2, stirring, homogenizing by a homogenizer, cooling and barreling.
The technical scheme of the invention is further improved as follows: in the step 1, the mass ratio of the polyoxyethylene octyl phenol ether-10 to the sodium dodecyl sulfate is 1: 1-1: 1.5.
the technical scheme of the invention is further improved as follows: the mass ratio of the water for dissolving the polyoxyethylene octyl phenol ether-10 and the sodium dodecyl sulfate in the step 1 to the mass ratio of the polyoxyethylene octyl phenol ether-10 to the sodium dodecyl sulfate is (1: 90) - (1): 45.
the technical scheme of the invention is further improved as follows: the concentration of the dissolved chitin in the step 1 is 2-20%.
The technical scheme of the invention is further improved as follows: and 3, the concentration of the aluminum sulfate dissolved in the step 3 is 5-8%.
The technical scheme of the invention is further improved as follows: the dispersant used in step 5 was sodium methylene dinaphthalene sulfonate.
The technical scheme of the invention is further improved as follows: the concentration of the solution after the alkyl ketene dimer is dissolved in the step 4 is 5-10%.
The technical scheme of the invention is further improved as follows: the mass ratio of the standby material C to the standby material D in the step 6 is (1-1.2:) (0.9-1.2): (1-1.5).
Due to the adoption of the technical scheme, the invention has the following technical effects:
the sludge recycling agent is prepared by selecting proper raw materials, designing a reasonable raw material proportion, and carrying out mixing dissolution reaction on the raw materials and treating the raw materials by a homogenizer. The process is simple and easy to implement, convenient to control, high in production efficiency and high in raw material utilization rate.
The sludge recycling agent produced by the invention can realize harmless treatment on sludge, and when the sludge recycling agent is used for treating sludge in a paper mill, the treated sludge and paper pulp can be mixed for recycling to produce paper, so that the material performance of a paper finished product is improved to a certain extent.
Detailed Description
The present invention will be described in further detail with reference to specific examples below:
the invention discloses a preparation method of a sludge recycling agent, the sludge recycling agent can be efficiently prepared by the preparation method, and the prepared sludge recycling agent has a good using effect.
The technical scheme of the invention is as follows:
1) adding alkylphenol polyoxyethylene ether emulsifier and sodium dodecyl sulfate into a dissolving tank, adding water and stirring to obtain a standby material A; wherein the mass ratio of the polyoxyethylene octyl phenol ether-10 to the sodium dodecyl sulfate is (1: 1) - (1): 1.5; wherein the mass ratio of the water for dissolving the polyoxyethylene octyl phenol ether-10 and the sodium dodecyl sulfate to the mass ratio of the polyoxyethylene octyl phenol ether-10 to the sodium dodecyl sulfate is (1: 90) - (1): 45. adding water into chitin, and dissolving in a dissolving tank to obtain a standby material B; the concentration of the dissolved chitin is 2-20%.
2) Adding the standby material A and the standby material B into a dissolving tank and fully stirring for standby; the volume ratio of the standby material A to the standby material B is 1: 1.
3) Putting aluminum sulfate into a dissolving tank, adding water for dissolving, and taking the aluminum sulfate as a standby material D; usually, the concentration of the aluminum sulfate after dissolution is 5 to 8%.
4) Putting the alkyl ketene dimer into a dissolving tank, and stirring and dissolving in water at 40-90 ℃ to obtain a spare material C; the concentration of the solution after the alkyl ketene dimer is dissolved is 5-10%.
5) Adding an emulsifier and a dispersant into water at the temperature of 30-90 ℃, and stirring and dissolving to obtain a spare material E; the dispersant used in this step was sodium methylene dinaphthalene sulfonate.
6) And adding the spare material C, the spare material D and the spare material E into the dissolving tank in the step 2, stirring, homogenizing by a homogenizer, cooling and barreling. Wherein the mass ratio of the standby material C, the standby material D and the standby material E is (1-1.2:) (0.9-1.2): (1-1.5).
The following are specific examples:
in this embodiment, a plurality of dissolving tanks having a capacity of 1 cubic meter, a plurality of dissolving tanks having a capacity of 3 cubic meters, a plurality of dissolving tanks having a capacity of 0.5 cubic meters, and a homogenizer are prepared. The preparation method comprises the following specific steps:
1) putting polyoxyethylene octyl phenol ether-10 and sodium dodecyl sulfate into a dissolving tank of 1 cubic meter, adding water and stirring to obtain a standby material A; wherein the mass of the polyoxyethylene octyl phenol ether-10 is 5-12 kg, and the mass of the sodium dodecyl sulfate is 6-9 kg. The mass of the water for dissolving the polyoxyethylene octyl phenol ether-10 and the sodium dodecyl sulfate is 500-900 Kg.
Adding water into chitin, and dissolving in a dissolving tank to obtain a standby material B; the concentration of the dissolved chitin is 2-20%.
2) Adding the standby material A and the standby material B into a dissolving tank and fully stirring for standby; wherein the spare material A has 300-500L, and the spare material B has 300-500L.
3) Putting aluminum sulfate into a dissolving tank with 3 cubic meters, and adding water to dissolve the aluminum sulfate to obtain a spare material D; usually, the concentration of the aluminum sulfate after dissolution is 5 to 8%.
4) Adding 25-50 Kg of alkyl ketene dimer into a 0.5 cubic meter dissolving tank, stirring and dissolving in water at 40-90 ℃ to obtain a spare material C; the concentration of the solution after the alkyl ketene dimer is dissolved is 5-10%.
5) Adding an emulsifier and a dispersant into water at the temperature of 30-90 ℃, stirring and dissolving to serve as a standby material E for subsequent use; the dispersant used in this step was sodium methylene dinaphthalene sulfonate. The mass ratio of the emulsifier to the dispersant is (1-1.5): (0.8-1.1). The ratio of the mass of the water used in the step to the sum of the mass of the emulsifier and the mass of the dispersant is (3-5): (1).
6) And adding the spare material C, the spare material D and the spare material E into the dissolving tank with the volume of 3 cubic meters in the step 2, stirring, homogenizing by using a homogenizer, cooling and barreling. Wherein the mass of the spare material C is 300-360Kg, the mass of the spare material D is 290-360Kg, and the mass of the spare material E is 333-450 Kg.
And preparing the standby material A, the standby material B, the standby material C, the standby material D and the standby material E in advance according to concentration in actual production, and then taking the materials as required to mix and stir, and carrying out corresponding treatment.
The invention uses polyoxyethylene octyl phenol ether-10, which is used as synthetic fiber oil agent, diffusant in bleaching and dyeing, leveling agent, oil field foaming agent, wetting agent, retarder, mud activating agent, near-wellbore area treating agent, detergent in metal industry, pesticide, rubber emulsifier, etc. The antistatic performance is good, and the softening agent is used as a softening agent in synthetic fiber short fiber blended yarn slurry, so that the final sludge recycling agent has the function of softening sludge.
Sodium lauryl sulfate used in the present invention is a non-toxic anionic surfactant. The biological degradation degree is more than 90%, and the sludge recycling agent has good emulsifying, foaming, penetrating, decontaminating and dispersing performances.
The chitin is used for sludge flocculation, can effectively improve granular materials and main materials of fine particles and fibers with flocculation effect, and is a degradable main material under strict environmental protection requirements. Chitin as a natural flocculant is a main material for edible liver protection. The material is a novel material which can be used for sludge flocculation and can effectively improve secondary pollution. Granular materials with flocculation effect and fine and small fibers are mainly retained, the main materials are degradable under strict environmental protection requirements, the single retention material is also the only biological retention and drainage aid material for recycling gold and silver, and the chitin used in the process can have the advantages of diversity, dispersibility, retention and dehydration properties and no secondary pollution.
Aluminum sulfate is usually used as a flocculating agent to be matched with chitin, so that the sludge recycling agent has a good flocculation effect.
The dispersant N, namely methylene dinaphthalene sodium sulfonate, is a dispersant for papermaking, and can make the sludge recycling agent particularly suitable for recycling sludge in papermaking industry. The dispersant has excellent grinding effect, solubility and dispersibility; can be used as a dispersant for textile printing and dyeing and wettable pesticide, a dispersant for papermaking, an electroplating additive, a water-soluble coating, a pigment dispersant, a water treatment agent, a dispersant and the like.
The sludge recycling agent is prepared by selecting proper raw materials, designing a reasonable raw material proportion, and carrying out mixing dissolution reaction on the raw materials and treating the raw materials by a homogenizer. The process is simple and easy to implement, convenient to control, high in production efficiency and high in raw material utilization rate.
When the sludge recycling agent is used and the treated sludge is pressurized by a high-pressure reactor, the sludge can be quickly transformed into cations within 3 seconds, and the cations are linked and flocculated into linear slurry to cause sludge-water separation. After the reacted cationic flocculent sludge is added to the net, the cationic flocculent sludge can be quickly combined with the anionic paper pulp and absorbed, and the paper is formed along with the fiber. The sludge retention rate is as high as more than 95 percent, and the felt cannot be blocked. The papermaking sludge recycling agent is added quantitatively, so that the reacted cationic flocculent sludge can be filled in gaps among the coarse fibers in time, the density and the longitudinal and transverse tension of paper are improved, and the paper surface flatness is increased. It also improves the strength, ring crush, folding resistance and bursting resistance of the paper. The sludge recycling agent also has ultrahigh dehydration property, the service life of the net blanket is prolonged, and the machine-rotating efficiency is greatly improved. More importantly, the finished product after adding the mud has high paper quality, no toxicity, no smell and no secondary pollution. Thereby thoroughly solving the problem of secondary utilization. Not only protects the environment, but also brings considerable economic and social benefits to enterprises.
The sludge recycling agent is particularly suitable for sludge treatment of paper mills, and the sludge recycling agent is used for treating sludge and then is recycled into papermaking pulp to be made into paper, so that the use amount of paper pulp can be reduced, the cost is reduced, the physical index of the paper is improved, the sludge is treated in an environment-friendly manner, and the pollution of the sludge to the environment is avoided.
The sludge recycling agent has cations, so that the wide pH value range from acidity to alkalinity can be absorbed by fibers, a good effect is achieved, aluminum sulfate is not needed, and the recycling agent is more suitable for solidification and has a better effect under neutral to slightly alkaline conditions.
The sludge recycling agent is very convenient to use. Because the recycling agent has low viscosity and is easy to disperse in cold water, the recycling agent can be conveniently prepared into solutions with various concentrations required by the process, and can be used together with a plurality of natural and synthetic water-soluble polymers containing-OH (hydroxyl), -NH2 (amino), -COOH (carboxyl) and the like to achieve better effect; the recycling agent is a non-formaldehyde wet strength agent and can be applied to occasions such as paper for consumption, paper for food and the like. In addition, the recycling agent is a non-hazardous article, can be packaged and transported by adopting a plastic barrel and a plastic-lined iron barrel, and only needs to be washed by water when leakage and damage occur.
The sludge recycling agent is simple to use, and the process flow is as follows: the method comprises the steps of firstly settling the sludge in a first settling tank, secondly settling the sludge in a second settling tank and an air flotation machine, → vibration sieve purification → a sludge storage tank → a medicament pipeline → a high-pressure high-efficiency sludge reactor → a slurry spraying pipeline → paper making.
By using the sludge recycling agent, the sludge can be used for papermaking, so that the sludge is recycled, and the quality of paper products is improved.
Claims (5)
1. A preparation method of a sludge recycling agent is characterized by comprising the following steps: comprises the following process steps of the following steps,
1) putting polyoxyethylene octyl phenol ether-10 and sodium dodecyl sulfate into a dissolving tank, adding water and stirring to obtain a standby material A; adding water into chitin, and dissolving in a dissolving tank to obtain a standby material B; the mass ratio of the polyoxyethylene octyl phenol ether-10 to the sodium dodecyl sulfate is 1: 1-1: 1.5; the mass ratio of the water for dissolving the polyoxyethylene octyl phenol ether-10 and the sodium dodecyl sulfate to the mass of the polyoxyethylene octyl phenol ether-10 and the sodium dodecyl sulfate is (1: 90-1): 45, a first step of; the concentration of the dissolved chitin is 2-20%;
2) fully stirring the standby material A and the standby material B in a dissolving tank for standby, wherein the volume ratio of the standby material A to the standby material B is 1: 1;
3) putting aluminum sulfate into a dissolving tank, adding water for dissolving, and taking the aluminum sulfate as a standby material D;
4) putting the alkyl ketene dimer into a dissolving tank, and stirring and dissolving in water at 40-90 ℃ to obtain a spare material C;
5) adding an emulsifier and a dispersant into water at the temperature of 30-90 ℃, and stirring and dissolving to obtain a spare material E;
6) and adding the spare material C, the spare material D and the spare material E into the dissolving tank in the step 2, stirring, homogenizing by a homogenizer, cooling and barreling.
2. The method for preparing the sludge recycling agent according to claim 1, wherein the method comprises the following steps: and 3, the concentration of the aluminum sulfate dissolved in the step 3 is 5-8%.
3. The method for preparing the sludge recycling agent according to claim 1, wherein the method comprises the following steps: the dispersant used in step 5 was sodium methylene dinaphthalene sulfonate.
4. The method for preparing the sludge recycling agent according to claim 1, wherein the method comprises the following steps: the concentration of the solution after the alkyl ketene dimer is dissolved in the step 4 is 5-10%.
5. The method for preparing the sludge recycling agent according to claim 1, wherein the method comprises the following steps: in the step 6, the mass ratio of the standby material C, the standby material D and the standby material E is (1-1.2): (0.9-1.2): (1-1.5).
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| CN201810289189.9A CN108455805B (en) | 2018-04-03 | 2018-04-03 | Preparation method of sludge recycling agent |
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| CN201810289189.9A CN108455805B (en) | 2018-04-03 | 2018-04-03 | Preparation method of sludge recycling agent |
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| CN108455805B true CN108455805B (en) | 2021-04-20 |
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| CN110436747A (en) * | 2019-07-31 | 2019-11-12 | 克拉玛依市博瑞科技发展有限公司 | Oil, water release agent and preparation method thereof and application method |
| CN115432907A (en) * | 2022-09-15 | 2022-12-06 | 北京尚水清源水处理技术有限公司 | Sludge dewatering method by thermal hydrolysis anaerobic digestion |
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| KR100893934B1 (en) * | 2007-08-30 | 2009-04-20 | 주식회사 성우지오텍 | Manufacture method of environmentally friendly life sewage sludges |
| CN101700920A (en) * | 2009-11-03 | 2010-05-05 | 武汉循环经济研究院 | Combined flocculating agent with controllable flocculation and using method thereof |
| CN102337707B (en) * | 2011-09-29 | 2013-12-25 | 浙江展航生物科技有限公司 | Preparation method of modified AKD (Alkyl Ketene Dimer) neutral sizing agent |
| CN108883999B (en) * | 2015-12-21 | 2022-02-18 | 凯米拉公司 | Recovery of phosphorus compounds from wastewater |
| CN206538325U (en) * | 2017-01-03 | 2017-10-03 | 郑州华祥浆料有限公司 | A kind of paper mill sludge reclaiming system |
| CN109626730A (en) * | 2017-05-30 | 2019-04-16 | 南京霄祥工程技术有限公司 | A kind of purpose ceramic-film filter for wastewater treatment |
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