CN1266027A - Wet dirt processing agent and method for processing wet dirt - Google Patents
Wet dirt processing agent and method for processing wet dirt Download PDFInfo
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- CN1266027A CN1266027A CN 99105612 CN99105612A CN1266027A CN 1266027 A CN1266027 A CN 1266027A CN 99105612 CN99105612 CN 99105612 CN 99105612 A CN99105612 A CN 99105612A CN 1266027 A CN1266027 A CN 1266027A
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Abstract
A wet-pollutant treating agent is formed from 100 weight portions of calcium oxide, 5-30 weight portions of sodium silicate, 5-30 weight portions of silicon dioxide and 1-10 weight portions of amoonium ion trapping agent, and can high-effectively treat wet pollutants, such as feces and refuse, and possesses energy-saving effect.
Description
The present invention relates to a wet soil treatment agent and a wet soil treatment method for treating wet soil. More particularly, the present invention relates to a wet soil treatment agent suitable for treating wet soil including waste materials such as excrements of animals, factories, etc., garbage, etc., and a wet soil treatment method for treating wet soil, which has an outstanding property of saving treatment energy, i.e., can be treated efficiently in a short time and in a clean environment.
At present, the range rate of sewers is less than 50% of the whole country. In an area where a sewer is not laid, sewage and sludgefrom homes and various public places such as hospitals, factories, and the like, and treatment tanks, and the like are collected by a dung cart or the like and transported to a treatment place to be treated in various ways. Further, wet garbage from homes and the like is collected by garbage collection vehicles, and many of the garbage is disposed of by burning or dumping.
At the treatment site, the collected and transported waste is treated by microbial decomposition into solid and liquid materials. The solid raw material may be treated as a fertilizer or by combustion, while the liquid raw material is subjected to a series of treatments including, for example, aggregation or precipitation, filtration, treatment with activated carbon, treatment with ozone, removal of nitrogen, phosphorus, etc., and then discharged into rivers, seas, etc. It is apparent that such a sewage treatment requires large-scale equipment, and the equipment, treatment and labor require expensive expenses. Also, the handling of solid raw materials requires very high costs.
Waste from animals, including feces and the like, may be collected and processed into compost. However, the formation of compost requires a long period of fermentation or aging, causes an unpleasant odor in the surrounding environment, and causes contamination of ground water including well water and the like in some areas.
Waste from households has a high water content and the disposal of waste requires large amounts of heavy oil to evaporate water therefrom, so that waste disposal lacks energy savings.
In view of the above-mentioned problems in the sewage treatment, various wet sewage treatment agents used for removing water by evaporating water from wet wastes such as sewage, sludge and the like, and a sewage treatment method for treating such wet wastes with such wet sewage treatment agents have been proposed.
Such wet soil treatment agents include, for example, the wet soil treatment agent disclosed in JP application publication (Kokai) No. 8-24,900, which comprises a composition containing calcium oxide and sodium silicate as main components. The patent specification also discloses a wet sewage treatment method for treating sewage, sludge and the like containing harmful heavy metals with such a wet sewage treatment agent.
JP patent publication (Kokai) No. 8-182,999 discloses a wet sewage treatment method comprising mixing sewage sludge with calcium oxide and dehydrating the sewage sludge while treating a large amount of ammonia gas generated when mixed with the calcium oxide, and adding an acidic powdery raw material to prevent generation and diffusion of a small amount of ammonia gas adsorbed in the dehydrated solid raw material.
This prior art, however, suffers from various drawbacks and difficulties.
For example, the wet soil treatment agent disclosed in JP application publication (Kokai) No. 8-24,900 is effective in adsorbing weakly acidic malodorous materials such as mercaptans, hydrogen sulfide and the like when treating wet soil including animal wastes, household wastes and the like, whereas weakly basic materials such as ammonia gas, trimethylamine gas and the like generated upon decomposition of nitrogen-containing components contained in the wastes and excrements are less likely to be adsorbed on the gel raw material. Therefore, the wet soil treatment agent has disadvantages in that offensive odor such as ammonia gas or trimethylamine gas may leak to the outside of the reaction system, and a separate deodorization device is required when using the soil treatment agent.
On the other hand, the wet soil treatment method disclosed in JP patent publication (Kokai) No. 8-182,999 generates a large amount of ammonia gas and trimethylamine gas during the treatment with calcium oxide, so that a large-sized adsorption apparatus must be installed in the reaction apparatus to adsorb these gases, thereby complicating and upsizing the apparatus and requiring a large amount of equipment cost. Meanwhile, a treating agent is additionally required, and therefore, this treating method has a disadvantage of being poor in economy. Further, an acidic powder material must be added at a later stage, so that a step of adding such a material is required, thereby complicating the process and being poor in usability.
The present invention has been made to successfully solve the above-mentioned problems occurring in the conventional art, and an object of the present invention is to provide a wet soil treatment agent for treating wet soil, which does not require a heating device and generates a high temperature enough to remove moisture from the soil, but is simply mixed with wet soil, including animal wastes, household wastes, etc., has an excellent property of saving energy, controls evaporation and diffusion of malodor components contained in the wet soil during the treatment, and can kill harmful organisms and keep the treatment under clean sanitary conditions.
To achieve the object, the present invention provides a wet soil treatment agent for treating wet soil, the agent comprising
Another object of the present invention is to provide a wet soil treatment method for treating wet soil which does not require a complicated system of equipment, can be operated in a simplified manner and in a short time, and can achieve efficient use and treatment efficiency in addition to the above effects.
Other objects, features and advantages of the present invention will become apparent from the following description.
The present invention will be described in more detail by way of specific embodiments.
The wet soil treatment agent of the present invention may include a composition comprising 100 parts by weight of calcium oxide, 5-30 parts by weight of sodium silicate, 5-30 parts by weight of silica, and 1-10 parts by weight of an ammonium ion scavenger.
By adding water to calcium oxide, the composition can generate heat of hydration to achieve very high temperatures according to the following chemical equation:
this heat of hydration can raise the temperature in the wet soil treatment system and evaporate the moisture contained therein, leaving the soil in a powdered form. The heat of hydration may also act to kill bacteria present in wet soils.
In addition, the wet soil treatment agent can adsorb weakly acidic and malodorous components including, for example, mercaptans and the like, on reaction products which are insoluble in water and obtained by reacting calcium oxide and sodium silicate. The reaction products may include, for example, sodium silicate gel, calcium sodium silicate gel, and the like.
In addition, the wet soil treatment agent of the present invention comprises an ammonium ion scavenger and silica including, for example, silica gel, etc., so that ammonium ions can be effectively adsorbed, thereby preventing ammonia gas generated at the time of treatment from adversely affecting the surrounding environment of the treatment site. Furthermore, the wet soil to be treated contains a large amount of nitrogen-containing components, so that it can also be used for the production of fertilizers, soil conditioners, and the like.
For the wet soil treatment agent of the present invention, the calcium oxide used may be a purification gradeor burnt lime having a purity of 50% or more. When using burnt lime, it is preferable to use a purity of 80% or more because the heat of reaction is high, and when the purity of burnt lime is low and if the purity is less than 50%, this tendency may be caused to remarkably appear.
In addition, the calcium oxide including, for example, burnt lime may be used in the form of powder, granules or agglomerates. Their average particle size is preferably from about 10mm to 0.001mm, in particular from about 1mm to 0.05 mm. If the average particle size is less than about 0.05mm, it is a tendency that the hydration reaction proceeds too quickly, with the result that a large amount of wet soil may be left untreated. Furthermore, calcium oxide and burnt lime having such a small particle size make it difficult to handle in the manufacture of wet soil treatment agents, and face the difficulty that their surface area is too large and may deteriorate to a large extent. On the other hand, if the average particle size of the calcium oxide and the burnt lime used is larger than about 1mm, there may be a tendency that the hydration reaction proceeds too slowly and takes a longer time. In addition, the temperature is difficult to rise, so that the reaction time becomes long. Longer reaction times may leave unreacted starting materials. In addition, the heat is diffused, reducing the effect of powdering the treated raw materials. These trends are detrimental to effective treatment of wet soils.
When the burnt lime is coated with fats and oils, it can be preferably used even if its average particle size is about 2mm to 0.05 mm. Although the particle size of the burnt lime may vary depending on the amount or kind of fat and oil, the amount of fat and oil may become large when the average particle size is less than about 0.05 mm. In this case, however, the reaction rate of the hydration reaction may increase and may cause the reaction to proceed rapidly. On the other hand, when the average particle size of the burnt lime is larger than about 2mm, there may be caused a tendency that the highest temperature at the time of treatment is lowered. In either case, it is not preferred to coat the fat and oil on the burnt lime having an average particle size outside the above range.
For the wet soil treatment agent of the present invention, calcium oxide including burnt lime may be preferably coated with fats and oils. Coating may be accomplished by coating the surface of the calcium oxide with fats and oils. The coating on the surface of the calcium oxide can prevent the calcium oxide from adsorbing moisture present in the air and causing hydration during storage. Furthermore, the coating itself can be broken by stirring during use as a wet soil treatment agent and bring the surface of the calcium oxide into contact with water present in the wet soil. Once the surface of the calcium oxide is in direct contact with the water present therein, the calcium oxide starts to generate heat and starts to hydrate, thereby raising the temperature of the wet soil. As the temperature for lifting the wet soil is higher and higher, the effect of breaking the fat and oil coating is faster and faster, and the final reaction is further promoted.
When fats and oils are used in the present invention, fats and oils having a wide range of melting points, for example, -10 ℃ to 200 ℃, may be used, and the melting point range of fats and oils may vary widely depending on the kind of source of the fats and oils. Fats and oils having a melting point of about 40 ℃ to 150 ℃, and preferably 60 ℃ to 120 ℃, may be preferred, for example, when the fats and oils include, for example, paraffins, random polymers, low molecular weight polymers such as oligomers of various resins. Fats and oils may include, for example, fats and oils having melting points below 40 ℃ may exude from the coating during storage, thereby makinghandling difficult and, at the same time, more likely to be flammable to fire, sparks, and the like. On the other hand, when fats and oils having melting points of more than 150 ℃ are used, the coating has to be heated, thereby consuming a large amount of energy. Other types of fats and oils may also be used as coatings. Such fats and oils may include, for example, C having a melting point of about-10 ℃ to 75 ℃, preferably about-5 ℃ to 70 ℃5-C22Saturated or unsaturated fatty acids. In addition, animal, e.g., bovine, equine, ovine, porcine, etc., bone fat, bovine, porcine, ovine, etc., fat, vegetable oil, etc., each of which has a melting point of about-10 ℃ to 75 ℃, preferably about-5 ℃ to 70 ℃, may also be suitably used. Waste materials of these fats and oils may also be used. These fats and oils having a lower melting point but still having a higher boiling point can be easily and uniformly coated on the surface of calcium oxide.
In addition to fats and oils, polyethers can also be used. Such polyethers may include, for example, polyethylene glycol or polypropylene rubbers.
Coating may be accomplished by mixing 100 parts by weight of calcium oxide with about 0.1 to 10 parts by weight, preferably about 0.5 to 6 parts by weight of fats and oils and/or polyethers in a conventional manner by spraying a liquid, e.g., solution, dispersion, etc., of the fats and oils and/or polyethers onto the calcium oxide, and blending the calcium oxide with the fats and/or polyethers by a blender, mixer, blender, etc.
The sodium silicate used in the present invention may include, for example, water glass, sodium orthosilicate, sodium disilicate, sodium tetrasilicate, and the like. Among these sodium silicates, water glass, sodium orthosilicate, and sodium orthosilicate are preferably used in accordance with the ease of producing calcium silicate gel or the like. The sodium silicate may preferably be used in the form of a powder or flakes. When sodium silicate is used in this form, it can be easily and quickly mixed with the other ingredients of the treatment agent and dissolved in the water of the treatment system to form a gel product.
The sodium silicate may be used in an amount of about 5 parts by weight to about 30 parts by weight, relative to 100 parts by weight of calcium oxide. On the one hand, if the ratio of sodium silicate is less than 5 parts by weight per 100 parts by weight of calcium oxide, curing of the organic raw material, in particular, becomes difficult. On the other hand, if the proportion of sodium silicate is less than 30 parts by weight per 100 parts by weight of calcium oxide, a large amount of labor is required for transportation and the like during the post-treatment.
Silica which can be used is, for example, silica gel, amorphous silica obtainable by blast furnace comminution, etc. The amount of silica may be about 5 parts by weight to 30 parts by weight with respect to 100 parts by weight of calcium oxide. On the one hand, when the silica is less than 5 parts by weight, the action of capturing ammonium ions or trimethylammonium ions will be difficult, thereby causing a tendency to generate ammonia gas or amine odor during the treatment. On the other hand, when the silica is increased to more than 30 parts by weight, there may be a tendency that the reaction temperature is lowered so that a sufficient degree of moisture cannot be removed from the wet soil.
The same trend was seen with the addition of the ammonium ion scavenger. That is, on the one hand, when the amount of the ammonium ion scavenger is less than about 1 part by weight per 100 parts by weight of calcium oxide, the proportion of the trapped ammonium ion or trimethylammonium ion may decrease, and ammonia gas or amine malodor may be generated to a higher degree during treatment.On the other hand, when the amount of the ammonium ion scavenger is more than about 10 parts by weight per 100 parts by weight of calcium oxide, a decrease in reaction temperature may be caused, making it difficult to remove a sufficient degree of moisture from wet soil.
The ammonium ion capturing agent in the soil treating agent of the present invention may include, for example, chlorides such as zinc chloride, aluminum chloride, tin chloride, iron chloride and the like, nitrates such as zinc nitrate, aluminum nitrate, tin nitrate, iron nitrate and the like, sulfates such as zinc sulfate, aluminum sulfate, tin sulfate, iron sulfate, potassium hydrogen sulfate, sodium hydrogen sulfate, ammonium iron sulfate, potassium aluminum sulfate, sodium aluminum sulfate and the like, phosphates such as ammonium dihydrogen phosphate, potassium dihydrogen phosphate, sodium dihydrogen phosphate and the like. The hydrochloride salt thereof may also be used. The ammonium ion scavenger may be used alone or in combination of two or more.
The ammonium ion scavenger may be appropriately selected depending on the concentration or type of ammonium ions to be treated. The ammonium ion capturing agent can effectively capture ammonium ions and has an effect of adsorbing ammonium ions on silica such as silica gel or the like.
Further, when nitrate and/or phosphate is used as the ammonium ion scavenger, ammonium ions and/or phosphate ions can be used to increase the characteristics of the fertilizer, and the residue obtained from the treatment of wet soil can be produced as a fertilizer. The ammonium ion scavenger may be used in the form of a powder or a concentrated solution.
The wet soil treatment method of the present invention comprises the steps of adding a quantity of wet soil treatment agent to a wet soil, including, for example, animal waste, garbage, etc., and agitating thewet soil. The wet soil treatment agent may be added in a ratio of about 20 to 150 parts by weight per 100 parts by weight of soil.
The wet soil treatment method can remove moisture from wet soil very efficiently in a very short time by using heat generated by hydration reaction of calcium oxide, and does not require the use of heating equipment or deodorizing equipment. When moisture is removed from the wet soil, the raw material becomes a solid state. Therefore, the wet soil treatment method is excellent in energy consumption and in use properties. The method is also excellent in environmental sanitation because the harmful organisms can be killed by heat generated by the reaction with calcium oxide.
The stirring step may be accomplished with a propeller stirrer, a ribbon mixer, or the like. In addition, malodor is rarely generated during the treatment and thus can be accomplished by simplified equipment such as a mixer truck (mixervehicle), etc., and wet soil can be immediately treated at the collected site. Therefore, the wet soil treatment method of the present invention can be effectively used as a measure that can be taken in an unexpected event such as an earthquake or the like.
The present invention will be described in more detail by way of examples.
The wet soil treatment agents used in the following examples were prepared and used for treatment in the manner described below.
Wet soil treatment agent # 1: a mixture consisting of 100 parts by weight of burnt lime (95% of calcium oxide) having an average particle size of 100 mesh, 20 parts by weight of sodium silicate, 20 parts by weight of silica and 5 parts by weight of aluminum nitrate as an ammonium ion scavenger.
Wet soil treatment agent # 2: a mixture consisting of 103 parts by weight of burnt lime whose surface is coated with approximately 3 wt% of bone fat, 20 parts by weight of sodium silicate, 20 parts by weight of silica, and 5 parts by weight of aluminum sulfate as an ammonium ion capturing agent.
Wet soil treatment agent #3 (for comparison): a mixture consisting of 103 parts by weight of burnt lime whose surface is coated with approximately 3 wt% of bone fat, 20 parts by weight of sodium silicate and 20 parts by weight of silica. The treating agent does not contain any ammonium ion trapping agent.
Each of the above wet soil treatment agents was prepared by mixing all the ingredients in a powder mixer. Example 1: treatment of feces
Feces were collected as samples using a vacuum vehicle. Samples containing approximately 95% moisture were used as wet standards.
The sample (100g) was placed in a 1 liter screw belt mixer. 70g of wet soil treatment agent #1 was added to the sample. When stirring was initiated, an exothermic reaction was caused to occur for a short period of time and water evaporated from the sample. No ammonia odor was smelled during the treatment and the sample dried to a powder after 15 minutes.
The results of the experiments are shown in table 1 below. Comparative example 1;
the same sample as used in example 1 was used as the sample of comparative example 1. A sample (100g) was placed in a 1 liter ribbon blender and treated substantially as in example 1 using wet soil treatment agent #3 without any ammonium ion scavenger.
In this comparative example, a strong odor generated by ammonia gas was smelled during the treatment. The sample became powdery after 20 minutes of treatment with the wet soil treatment agent.
The results of the experiments are shown in table 1 below.
TABLE 1
| Research projects | Treatment agent #1 (wt％) | Treatment agent #3 (wt％) | Analytical method |
| Total nitrogen content | 0.32 | 0.23 | Bottom deposit study #18 |
| Total phosphorus content | 0.097 | 0.096 | Bottom deposit study #19 |
| Total calcium content | 0.069 | 0.064 | Bottom sediment based study #6 |
| Calcium carbonate | 40.2 | 40.2 | Bottom sediment based study #6 |
As is apparent from table 1, the sample treated with the wet soil treatment agent #1 contained about 1.4 times as much nitrogen-containing components as the sample treated with the wet soil treatment agent #3 which did not contain the ammonium ion scavenger. This result confirms the effect of the ammonium ion scavenger. It was also found that the sample treated with wet soil treatment agent #1 contained a large amount of phosphate and potassium components, and was suitable for use as a fertilizer. In addition, it contains a large amount of calcium component, and thus can be used as a fertilizer, a soil conditioner, and the like.
The experimental results show that the malodor components are adsorbed to remove the malodor. In addition, the sample treated with the wet soil treatment agent #1 was made into powder, thereby being easy to handle. Example 2: cow dung
Cow dung was collected as a sample (water content: about 45%) by a vacuum car in substantially the same manner as in example 1.
To a 200g sample placed in a 1 liter container, 160g of wet soil conditioner #2 was added and the mixture was stirred. During the stirring, an exothermic reaction occurred to generate heat, and the sample remained in a powder state about 20 minutes after the start of the stirring. At this time, it was found that the exothermic reaction proceeded milder than that occurred in example 1 because the wet soil treatment agent #2 did not contain bone fat unlike the wet soil treatment agent # 1. No odor was emitted during the treatment.
The compositions of the samples were analyzed and the results are shown in table 2 below. Comparative example 2:
the cow dung sample (100g) collected above was treated with the wet soil treatment agent #3 containing no ammonium ion scavenger in substantially the same manner as in example 2. During the treatment, a strong odor was observed.
The compositions of the samples were analyzed and the results are shown in table 2 below.
TABLE 2
| Research projects | ToReason agent #2 (wt％) | Treatment agent #3 (wt％) | Analytical method |
| Total nitrogen content | 0.39 | 0.25 | Bottom deposit study #18 |
| Total phosphorus content | 0.038 | 0.036 | Bottom deposit study #19 |
| Total calcium content | 0.070 | 0.068 | Bottom sediment based study #6 |
| Calcium carbonate | 48.9 | 48.6 | Bottom sediment based study #6 |
As is apparent from table 2, the sample treated with the wet soil treatment agent #2 contained ingredients suitable for use as a fertilizer, and it contained a large amount of nitrogen-containing ingredients as compared with the sample treated with the wet soil treatment agent #3 containing no ammonium ion scavenger. Example 3: treatment of waste
The waste consisting of vegetable residues and fish and shell residues in a ratio of about 2: 1 was collected as a sample (water content: about 70%).
The sample (300g) was placed in a 2 liter container and 60g of wet soil treatment agent #2 was added. The mixture was stirred for 20 minutes witha mixer. Little odor was found during stirring. After the stirring was completed, the sample became powdery. It was also found that the weight of the waste was reduced to about 60% of the original weight of the waste and the volume was reduced to about 70%.
The composition of the wet soil treatment agent #2 treated samples was analyzed and the results are shown in table 3 below. Comparative example 3:
a sample of 300g amount was treated with the wet soil treating agent #3 in substantially the same manner as in example 3. No odor was smelled during the stirring.
The composition of the samples treated with wet soil treatment #2 was analyzed and the results are shown in table 3 below.
TABLE 3
| Research projects | Treatment agent #2 (wt％) | Treatment agent #3 (wt％) | Analytical method |
| Total nitrogen amount | 0.24 | 0.19 | Bottom deposit study #18 |
| Total phosphorus amount | 0.05 | 0.05 | Bottom deposit study #19 |
| Total calcium content | 0.25 | 0.24 | Bottom sediment based study #6 |
| Calcium carbonate | 37.8 | 37.1 | Bottom sediment based study #6 |
As is apparent from table 3, the sample treated with the wet soil treatment agent #2 contained ingredients suitable for use as a fertilizer, and it contained a large amount of nitrogen-containing ingredients as compared with the sample treated with the wet soil treatment agent #3 containing no ammonium ion scavenger. In addition, it is rich in potassium and calcium components and is suitable for use as a fertilizer and other purposes.
The wet soil treatment agent of the present invention includes a composition comprising calcium oxide, sodium silicate, silica and anammonium ion scavenger, which has various advantages: the temperature of the wet sewage treatment system can be raised to a level sufficient to evaporate the water contained therein by the heat generated by the hydration reaction of the calcium oxide. The generated heat may also kill pests that multiply in wet soils. The remaining product can be obtained in powder form, easy to handle and environmentally hygienic and safe.
The wet soil treatment agent of the present invention also has advantages in that weakly acidic malodorous components such as mercaptans and the like can be adsorbed on a water-insoluble reaction product obtained by the reaction of calcium oxide and sodium silicate. The reaction products may include, for example, sodium silicate gel, calcium sodium silicate gel, and the like.
Further, the wet soil treatment agent of the present invention can effectively adsorb ammonium ions on silica because it contains an ammonium ion-capturing agent and silica, thereby making it possible to prevent the generation of malodorous gases such as ammonia and trimethylamine during treatment and the contamination of the environment around the treatment site. Furthermore, the wet soil to be treated contains a large amount of nitrogen-containing components, and thus can be used as a fertilizer and a soil conditioner for a second purpose.
In addition, calcium oxide is coated with fats and oils or polyethers in order to prevent the wet soil treatment agent of the present invention from being hydrated by absorbing moisture in the air during storage. Further, when the wet soil treatment agent is agitated, the coating layer formed on the surface of calcium oxide is broken to contact with water, heat is generated and thus hydration is started, raising the temperature of the wet soil. As the temperature of wet soils gets higher, the coating formed on the calcium oxide surface becomes more brittle, thereby promoting faster hydration.
This constitution of the wet soil treatment agent of the present invention can promote the drying of wet soil, and the dried soil residue can be utilized as a fertilizer or the like.
In addition, the wet soil treatment agent of the present invention contains an ammonium ion scavenger including, for example, sulfate, chloride, hydrochloride, nitrate, phosphate, and the like. The ammonium ion capturing agent may be selected according to the concentration and type of ammonium ions contained in the wet soil to be treated, and may effectively capture the ammonium ions and adsorb them on the silica. In particular, when a nitrate or a phosphate is selected as the ammonium ion scavenger, the wet soil treatment agent comprising such an ammonium ion scavenger can also be used as a fertilizer as a secondary use because nitrate or phosphate ions can supplement the characteristics of the fertilizer components.
In another aspect of the present invention, the wet soil treatment method can remove moisture from wet soil such as excrements, garbage, etc., and efficiently solidify the wet soil in a relatively short time by the heat generated by the exothermic reaction of hydration of calcium oxide. Another advantage of this wet soil treatment process is that no heating or deodorizing equipment is required. Therefore, the wet soil treatment method of the present invention is advantageous in that energy can be saved and in that practical performance can be obtained. In addition, it can rapidly kill harmful organisms by high temperature generated by heat during reaction, thereby being extremely advantageous to environmental sanitation.
Claims (7)
1. A wet soil treatment agent for treating wet soil, the agent comprising
100 parts by weight of calcium oxide,
5 to 30 parts by weight of sodium silicate,
5 to 30 parts by weight of silica, and
1-10 parts by weight of an ammonium ion trapping agent.
2. The wet soil treatment agent according to claim 1, wherein the purity of the calcium oxide is 50% or more.
3. The wet soil treatment agent according to claim 1 wherein the average particle size of said calcium oxide is from about 0.001mm to 10 mm.
4. The wet soil treatment agent according to claim 1, wherein the surface of said calcium oxide is coated with a fat or oil having a melting point of about-10 ℃ to 200 ℃, or a polyether.
5. The wet soil treatment agent according to claim 1 wherein said ammonium ion scavenger is a chloride, sulfate, nitrate or phosphate salt.
6. The wet soil treatment agent according to claim 5, wherein:
the chloride is zinc chloride, aluminum chloride, stannic chloride or ferric chloride;
the sulfate is zinc sulfate, aluminum sulfate, tin sulfate, ferric sulfate, potassium bisulfate, sodium bisulfate, ferric ammonium sulfate, aluminum potassium sulfate or aluminum sodium sulfate;
the nitrate is zinc nitrate, aluminum nitrate, tin nitrate or ferric nitrate; or
The phosphate is ammonium dihydrogen phosphate, potassium dihydrogen phosphate or sodium dihydrogen phosphate.
7. A wet soil treatment method for treating a wet soil, themethod comprising the steps of:
adding 20-150 parts by weight of a wet soil treatment agent to 100 parts by weight of wet soil; and is
The mixture of wet soil and wet soil treatment agent is agitated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99105612 CN1266027A (en) | 1999-03-08 | 1999-03-08 | Wet dirt processing agent and method for processing wet dirt |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99105612 CN1266027A (en) | 1999-03-08 | 1999-03-08 | Wet dirt processing agent and method for processing wet dirt |
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| CN1266027A true CN1266027A (en) | 2000-09-13 |
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| CN 99105612 Pending CN1266027A (en) | 1999-03-08 | 1999-03-08 | Wet dirt processing agent and method for processing wet dirt |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106311711A (en) * | 2015-06-19 | 2017-01-11 | 曾领才 | Calcification agent for urban household garbage treatment and application of calcification agent |
| WO2018032810A1 (en) * | 2016-08-16 | 2018-02-22 | 中电建水环境治理技术有限公司 | Composite material for treating, conditioning, and remediating contaminated river or lake sediment, and manufacturing method thereof |
| CN109006501A (en) * | 2017-06-05 | 2018-12-18 | 张琼月 | Recyclable cat litter and manufacturing method thereof |
| CN110143749A (en) * | 2019-06-12 | 2019-08-20 | 蔡伟 | A kind of septic tank sludge microwave drying and other treatment device and processing method |
-
1999
- 1999-03-08 CN CN 99105612 patent/CN1266027A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106311711A (en) * | 2015-06-19 | 2017-01-11 | 曾领才 | Calcification agent for urban household garbage treatment and application of calcification agent |
| WO2018032810A1 (en) * | 2016-08-16 | 2018-02-22 | 中电建水环境治理技术有限公司 | Composite material for treating, conditioning, and remediating contaminated river or lake sediment, and manufacturing method thereof |
| CN109006501A (en) * | 2017-06-05 | 2018-12-18 | 张琼月 | Recyclable cat litter and manufacturing method thereof |
| CN110143749A (en) * | 2019-06-12 | 2019-08-20 | 蔡伟 | A kind of septic tank sludge microwave drying and other treatment device and processing method |
| CN110143749B (en) * | 2019-06-12 | 2022-01-28 | 江苏首标环保科技有限公司 | Microwave drying treatment device and treatment method for sludge in septic tank |
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