CN115991524B - Sustained-release product for treating urine wastewater and preparation method thereof - Google Patents
Sustained-release product for treating urine wastewater and preparation method thereof Download PDFInfo
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- CN115991524B CN115991524B CN202310289986.8A CN202310289986A CN115991524B CN 115991524 B CN115991524 B CN 115991524B CN 202310289986 A CN202310289986 A CN 202310289986A CN 115991524 B CN115991524 B CN 115991524B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention belongs to the technical field of urine wastewater treatment, and particularly discloses a slow-release product for urine wastewater treatment and a preparation method thereof. The slow release product is prepared by taking artificial synthetic camphor powder, a kathon solution and citric acid as main raw materials. The slow release product has effects of preventing urine corrosion and deodorizing. The slow release block has higher hardness, and is not easy to crack and generate powder after long-time storage; the storage period is long, and the deterioration is not easy. The method has the advantages of simple preparation process flow, good repeatability, low equipment requirement, low production cost and easy industrialized production.
Description
Technical Field
The invention belongs to the technical field of urine wastewater treatment, and particularly relates to a slow-release product for urine wastewater treatment and a preparation method thereof.
Background
Urine waste water in urinals or other urine containers in toilets contains a large amount of microorganisms, and urease secreted by the microorganisms can catalyze urea in urine to hydrolyze into ammonia and carbon dioxide, so that the irritating ammonia smell can be generated. At present, the urine preservation is realized mainly by adding artificial synthetic camphor balls into a urinal or adding a kathon preservative solution with a certain proportion into a urine collecting barrel. The main component of the artificial camphor powder is 1, 4-p-dichlorobenzene, and the main application is moth-proofing, mildew-proofing and deodorizing. The main components of the pinus koraiensis preservative are a mixture of 2-methyl-4-isothiazolin-3-one (MI) and 2-methyl-5-chloro-4-isothiazolin-3-one (CMI) and a little magnesium chloride and magnesium nitrate as stabilizers, is an excellent broad-spectrum bactericide, has good inhibition effect on saccharomycetes, fungi, gram bacteria, heterotrophic bacteria, algae and the like, and is widely used for sterilization and preservation treatment. The citric acid can rapidly remove scale on the inner wall of the pipeline and has the sterilization effect. However, in the actual application scene, the kathon preservative is not timely added or can not act on the corner of the pipeline, so that the sterilizing effect of the kathon can be reduced, and the urine preservative effect can not be achieved only by means of the camphor ball.
Disclosure of Invention
The invention aims to provide a synthesis method of a slow-release block with sterilization and deodorization functions, which is low in cost and easy to operate. Aiming at the problems that the kathon preservative cannot act on urine at the turning part of a pipeline in the using process, the addition is not timely, the addition is insufficient or excessive, and the like, the artificial synthetic camphorball only has the effects of deodorization and sterilization. Aiming at the problems, the invention mixes the artificial camphor powder, the kathon solution and the citric acid solution according to a certain proportion, converts the kathon liquid and the citric acid solution into solid by utilizing the characteristic that the synthetic camphor powder is easy to solidify at normal temperature, plays a slow-release role simultaneously, prolongs the anti-corrosion and deodorant playing time of the synthetic camphor and the kathon, and increases the action and effect thereof.
The invention provides a slow release product for treating urine wastewater, which aims to solve the technical problems in the background, and comprises the following components in percentage by weight: 67% -89% of camphor powder, 1% -3% of kathon solution and 10% -30% of citric acid powder, which are calculated according to mass concentration;
the slow release product at least comprises one of slow release particles, slow release blocks, slow release capsules and slow release tablets containing the components and the contents;
the slow release product at least comprises one of a cylinder and a sphere;
the camphor powder is artificial synthetic camphor powder, and the main component of the camphor powder is one or a mixture of 1, 4-paradichlorobenzene or natural camphor powder;
the pinus koraiensis is a mixture comprising 2-methyl-4-isothiazolin-3-one (MI) and 2-methyl-5-chloro-4-isothiazolin-3-one (CMI).
The invention provides another technical scheme of a preparation method of a slow-release product for treating urine wastewater, which comprises the following steps:
grinding camphor powder, sieving, and putting into a mould;
adding the kathon solution into the ethanol solution of the citric acid, uniformly stirring, and then pouring into the same die in the step 1);
heating to 150-250deg.C in the mold, and stopping heating when the powder in the mold becomes liquid;
cooling to room temperature, demoulding to obtain the slow release product of the mixture of the camphor powder and the pinus koraiensis.
Preferably, the citric acid in the step 2) is added into an absolute ethanol solution to prepare a citric acid solution, wherein the mass-volume ratio of the citric acid to the absolute ethanol in the citric acid solution is 1:4-5, and the unit g/ml.
Preferably, the step 1) is sieving and selecting the mesh number of 200-300.
Preferably, the heating temperature in the step 3) is 170-200 ℃.
The slow release product with deodorizing and sterilizing effects is added into the urine wastewater, so that the technical problems in the background technology are successfully solved. The slow-release product formed by mixing and solidifying the artificial camphor powder, the kasong solution and the citric acid solution according to a certain proportion inhibits the hydrolysis of urine discharged into the urinal, prevents the problems of dirt blockage of the urinal and peculiar smell generated by the hydrolysis of the urine, and prolongs the preservation time of fresh urine.
The slow release product in urine can delay the time of the action of camphor powder, pinus koraiensis and citric acid. The alcaligenes in the calicheane group are reduced through the relative abundance expression of bacterial communities, so that the pH rise is inhibited, the generation of free ammonia nitrogen is also inhibited, and the sustained-release sterilization and deodorization performance is good. Meanwhile, the addition of the camphor powder can reduce Acinetobacter, and the bacillus can cause urogenital infection.
The urine anti-corrosion slow-release product has good dispersibility and uniformity after being put into the urine anti-corrosion slow-release product.
According to the invention, the ethanol solution is selected, the absolute ethanol plays a role in dissolution and dispersion, the problem of mixing of the pinus koraiensis and the citric acid is well solved, and the camphor powder can be well and uniformly dissolved and mixed with the pinus koraiensis and the citric acid.
Drawings
FIG. 1 is a flow chart of the preparation of the urine antiseptic and deodorant sustained release block.
FIG. 2 is a graph showing the relative abundance of bacterial communities after 120 hours of urine collected after 12 hours of storage of the prepared urine preservative and deodorant sustained release product in urine wastewater.
Detailed Description
The present invention is further illustrated below with reference to examples and figures, it being understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, and that various equivalent modifications of the present invention will fall within the scope of the appended claims to the present application after reading the present invention.
The camphor powder, the kathon solution and the citric acid used in the invention are all commercial products.
As shown in figure 1, the preparation method of the slow release product for treating the urine wastewater comprises the following steps:
grinding and sieving artificial synthetic camphor powder, placing into a mould, and selecting or manufacturing corresponding mould according to use occasion and environment, wherein the slow release product at least comprises one or more of slow release particles, slow release blocks, slow release capsules and slow release tablets;
weighing a kathon solution and an ethanol solution of citric acid, and adding the kathon solution and the ethanol solution of citric acid into the same die in the step 1);
turning on the heater, stopping heating when the powder in the mold becomes liquid;
cooling to room temperature, demoulding to obtain the final product of the slow release block of the mixture of the camphor powder and the pinus koraiensis.
Example 1
(1) Weighing 12g of synthetic camphor powder by a balance, grinding, sieving with a 200-mesh sieve, and putting into a mould;
(2) Then 1.35 ml of 14% kathon solution is weighed and added into ethanol solution containing 2.4g of citric acid to be uniformly mixed, and the mixed liquid is added into the same die in the step (1);
(3) Turning on a heater, heating to 200deg.C for 35 min, and stopping heating when powder in the mold becomes liquid;
(4) Cooling to room temperature, and demolding to obtain a finished product of the slow-release block of the mixture of the camphor powder and the pinus koraiensis;
(5) The slow release block was placed in a urinal, urine after 12 hours was collected, and its pH was measured.
TABLE 1
| Time (h) | Experimental | Control group | |
| 0 | 6.4 | 6.5 | |
| 24 | 6.5 | 8.7 | |
| 48 | 6.6 | 9.2 |
The change in urine pH over 48 hours is shown in Table 1.
Example 2
(1) Weighing 8.88g of synthetic camphor powder by a balance, grinding, sieving by a 200-mesh sieve, and putting into a mould;
(2) Then 1.0 ml of 14% kathon solution is weighed and added into ethanol solution containing 1.78g of citric acid to be uniformly mixed, and the mixed liquid is added into the same die in the step (1);
(3) Turning on a heater, heating to 180deg.C for 35 min, and stopping heating when powder in the mold becomes liquid;
(4) Cooling to room temperature, and demolding to obtain a finished product of the slow-release block of the mixture of the camphor powder and the pinus koraiensis;
(5) The slow release block was placed in a urinal, urine after 12 hours was collected, and its pH was measured.
TABLE 2
| Time (h) | Experimental | Control group | |
| 0 | 6.5 | 6.5 | |
| 24 | 6.7 | 8.8 | |
| 48 | 6.7 | 9.1 |
The change in urine pH over 48 hours is shown in table 2.
Example 3
(1) Weighing 10 g of the balance, grinding the synthesized camphor powder, sieving with a 200-mesh sieve, and putting into a die;
(2) Then 1.12 ml of 14% kathon solution is weighed and added into ethanol solution containing 2g of citric acid to be uniformly mixed, and the mixed liquid is added into the same die in the step (1);
(3) Turning on a heater, heating to 170deg.C for 35 min, and stopping heating when powder in the mold becomes liquid;
(4) Cooling to room temperature, and demolding to obtain a finished product of the slow-release block of the mixture of the camphor powder and the pinus koraiensis;
(5) The slow release block was placed in a urinal, urine after 12 hours was collected, and its pH was measured.
TABLE 3 Table 3
| Time (h) | Experimental | Control group | |
| 0 | 6.2 | 6.2 | |
| 24 | 6.8 | 6.7 | |
| 48 | 6.9 | 8.7 |
The change in urine pH over 48 hours is shown in Table 3.
| Examples | Mesh of sieve | Temperature (DEG C) | Natural camphor powder g | 14% Kathon solution ml | Citric acid g | Absolute ethanol ml | Shaped sustained release product | pH for 48 hours |
| 4 | 200 | 250 | 12 | 1.35 | 2.4 | 12 | Sustained release capsule | 6.6 |
| 5 | 250 | 170 | 8.88 | 1.0 | 1.78 | 8.9 | Sustained release granule | 6.5 |
| 6 | 300 | 150 | 10 | 1.12 | 2 | 10 | Sustained release tablet | 6.7 |
Examples 4-6 above are other sustained release products.
In the above examples, the color change was observed on days 1 and 5, and the relative abundance of bacterial colonies in urine on day 5 is shown in FIG. 2. The slow release product in urine can delay the time of the action of camphor powder, pinus koraiensis and citric acid. By expressing the relative abundance of bacterial communities, alcaligenes in the calicheane group are reduced, thereby inhibiting the increase in pH and also inhibiting the generation of free ammonia nitrogen.
Experiments on solubility
In the process of preparing the urine anti-corrosion and deodorant slow-release product, the dissolution assisting effect in different solvents (water, dimethyl sulfoxide, polyethylene glycol, absolute ethyl alcohol and citric acid solution) is tried, the absolute ethyl alcohol plays a role in dissolution assisting and dispersion, the absolute ethyl alcohol solution is selected, the problem of the miscibility of the pinus koraiensis and the citric acid is well solved, and the camphor powder can be well and uniformly dissolved and mixed with the pinus koraiensis and the citric acid.
| Comparative example | Mesh of sieve | Temperature (DEG C) | Natural camphor powder g | 14% Kathon solution ml | Citric acid g | Absolute ethanol ml | pH for 48 hours |
| 1 | 200 | 180 | 12 | 2.5 | 2.4 | 12 | 6.5 |
| 2 | 200 | 180 | 12 | 0.15 | 2.4 | 12 | 7.5 |
| 3 | 200 | 180 | 12 | 0.15 | 4.8 | 24 | 7.3 |
The urine anti-corrosion slow-release product has good dispersibility and uniformity after being put into the urine anti-corrosion slow-release product. After the prepared urine anti-corrosion and deodorant slow release block is washed by urine wastewater and stored for 12 hours, the transparency of the urine after the collected urine passes through 120 hours is obviously changed, the solution of a blank urine group without the slow release block is turbid, the bottom of a glass bottle can visually see the precipitate generated by hydrolysis of the urine, and the urine washed by the urine anti-corrosion and deodorant slow release block is still clear and transparent, and the precipitate is not generated at the bottom. The results show that the prepared urine anti-corrosion and deodorizing slow release block has a certain anti-corrosion and deodorizing effect.
The three components and content ranges in comparative examples 2 and 3 are outside: 67-89% of camphor powder, 1-3% of kathon solution and 10-30% of citric acid powder, and the result is not ideal.
The foregoing description is only illustrative of the preferred embodiments of the present invention, and therefore should not be taken as limiting the scope of the invention, for all changes and modifications that come within the meaning and range of equivalency of the claims and specification are therefore intended to be embraced therein.
Claims (3)
1. The slow release product for treating the urine wastewater is characterized by comprising the following components in percentage by weight: 67% -89% of camphor powder, 1% -3% of kathon solution and 10% -30% of citric acid powder, which are calculated according to mass concentration;
the slow release product is one of slow release granules, slow release blocks, slow release capsules and slow release tablets containing the components and the contents;
the slow release product is one of a cylinder and a sphere; the camphor powder is artificial synthetic camphor powder, and the main component of the camphor powder is 1, 4-p-dichlorobenzene;
the pinus koraiensis is a mixture comprising 2-methyl-4-isothiazolin-3-one and 2-methyl-5-chloro-4-isothiazolin-3-one;
the preparation of the slow release product comprises the following steps: 1) Grinding camphor powder, sieving, and putting into a mould; 2) Adding ethanol solution of citric acid into the kathon solution, uniformly mixing, and then pouring into the same die in the step 1); 3) Heating to 150-250deg.C in the mold, and stopping heating when the powder in the mold becomes liquid; 4) Cooling to room temperature, and demolding to obtain a slow-release product of the mixture of the camphor powder and the pinus koraiensis;
and 2) adding citric acid into the absolute ethyl alcohol solution to prepare a citric acid solution, wherein the mass volume ratio of the citric acid to the absolute ethyl alcohol in the citric acid solution is 1:4-5, and the unit g/ml.
2. The slow release product for treating waste water of urine according to claim 1, wherein the step 1) is carried out by sieving with a sieve having a mesh number of 200 to 300.
3. The slow release product for treating waste water of urine according to claim 1, wherein the heating temperature in the step 3) is 170-200 ℃.
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| JP2000319104A (en) * | 1999-05-11 | 2000-11-21 | Kyoto Karitasu:Kk | Slow release complex and its secondary product |
| JP4953888B2 (en) * | 2007-04-03 | 2012-06-13 | 優 伊原 | Silver-supported ceramic porous material for silver ion spray |
| CN102215693A (en) * | 2008-11-14 | 2011-10-12 | 株式会社凯美克尔 | Controlled-release antibacterial/antifungal agent for gas-phase use and antibacterial/antifungal method utilizing same |
| CN102210871A (en) * | 2010-07-16 | 2011-10-12 | 钟术光 | Pharmaceutical carrier of slow-release medicine |
| CN106085651A (en) * | 2016-06-24 | 2016-11-09 | 南京为绿生物科技有限公司 | Green health spacetabs type cleaning toilet is precious |
| CN109158080A (en) * | 2018-09-15 | 2019-01-08 | 天津大学 | A kind of magnesium for recycling nitrogen P elements in urine changes the preparation method of charcoal |
| CN109160571A (en) * | 2018-09-15 | 2019-01-08 | 天津大学 | A method of urine waste water reclaiming is disposed |
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