CN110540319B - Inorganic chemical detection laboratory waste liquid curing process and system - Google Patents
Inorganic chemical detection laboratory waste liquid curing process and system Download PDFInfo
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- CN110540319B CN110540319B CN201910781598.5A CN201910781598A CN110540319B CN 110540319 B CN110540319 B CN 110540319B CN 201910781598 A CN201910781598 A CN 201910781598A CN 110540319 B CN110540319 B CN 110540319B
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- 239000007788 liquid Substances 0.000 title claims abstract description 112
- 239000002699 waste material Substances 0.000 title claims abstract description 76
- 239000000126 substance Substances 0.000 title claims abstract description 59
- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000008569 process Effects 0.000 title claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 54
- 238000003756 stirring Methods 0.000 claims abstract description 44
- 229920001817 Agar Polymers 0.000 claims abstract description 21
- 239000008272 agar Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000007787 solid Substances 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 239000002244 precipitate Substances 0.000 claims abstract description 8
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 238000005352 clarification Methods 0.000 claims abstract 2
- 239000000243 solution Substances 0.000 claims description 40
- 238000001035 drying Methods 0.000 claims description 37
- 238000005192 partition Methods 0.000 claims description 20
- 239000011259 mixed solution Substances 0.000 claims description 19
- 238000000967 suction filtration Methods 0.000 claims description 17
- 239000003513 alkali Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 13
- 229920001903 high density polyethylene Polymers 0.000 claims description 13
- 239000004700 high-density polyethylene Substances 0.000 claims description 13
- 238000007711 solidification Methods 0.000 claims description 10
- 230000008023 solidification Effects 0.000 claims description 10
- 239000002585 base Substances 0.000 claims description 8
- 239000013049 sediment Substances 0.000 claims description 8
- 239000002274 desiccant Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 5
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 3
- 239000001110 calcium chloride Substances 0.000 claims description 3
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 3
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 238000000638 solvent extraction Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000003860 storage Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000002351 wastewater Substances 0.000 abstract description 4
- 238000007726 management method Methods 0.000 description 8
- 238000011049 filling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
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- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
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- 239000000499 gel Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a waste liquid curing process and system for an inorganic chemical detection laboratory, which comprises the following specific steps: a. acid-base classification collection waste liquid is carried out by using a waste liquid collection container; b. mixing the waste liquid, and performing acid-base neutralization and clarification according to needs to obtain a solution to be treated and a precipitate; c. converting the curing agent into a liquid state, transferring the curing agent and the solution to be treated to a stirring device, uniformly stirring, transferring to a container, standing, cooling and curing; d. collectively dewatering the solidified material and the aforesaid precipitated material, leaving a dried solid crushed material; e. and sealing and storing the solid crushed aggregates. The invention treats liquid laboratory wastewater into solid substance, thereby being more beneficial to safe storage and effective management, changing the characteristics of easy leakage, easy seepage and amorphous of liquid after the agar is solidified, reducing the volume of waste by changing the form of the substance, reducing the occupied area of the waste and being an environment-friendly and economical waste liquid treatment method.
Description
Technical Field
The invention relates to the field of waste liquid, in particular to a waste liquid curing process and system for an inorganic chemical detection laboratory.
Background
The government department gradually improves the environmental pollution problem by increasing the investment on the environmental protection career, and the control of the environmental pollution is also paid attention and support consistently, so that the protection of the environment is the obligation that each citizen should be used up. As an indispensable part of modern industrial systems, chemical detection laboratories play a very important role in various industries, and laboratory wastes are increasingly accumulated along with the continuous development of the work of the chemical detection laboratories, wherein the inorganic chemical laboratories have complex pollutant types and can be roughly divided into solid and liquid.
The inorganic chemical waste liquid has the characteristics of easy leakage, easy seepage and amorphous property due to obvious fluid property, and the collection and the protective storage of the inorganic chemical waste liquid are obviously more complicated compared with solid waste. Chemical detection laboratory waste streams typically come from solutions generated after sample analysis, expired reagents, remaining samples. Generally, the waste treatment in the chemical detection laboratory usually has a time lag, and the waste needs to be collected in a centralized manner first, and then the waste is uniformly processed after the storage amount meets the requirement. Laboratory chemical waste solutions need to be stored in specialized locations or facilities that meet specific requirements before chemical detection waste solution can be harmlessly treated and ultimately disposed of. This is not only a laboratory management requirement, but is also a normal economic consideration. For inorganic chemical laboratories, the collection of various types of waste water solutions is necessary, if on average about 30 liters of waste water are produced per day, about 150 liters are stocked once in five working days. And the waste liquid has the characteristics of strong acid, strong alkali and serious heavy metal ionization, is easy to enter water and soil to cause secondary pollution, and has great destructive effect on the natural environment.
Most laboratories put the focus of laboratory waste liquid management work in the aspect of categorised collection, perfect waste liquid storage condition and perfect waste liquid information-based management, but the chemical waste liquid in laboratory is different from domestic wastewater and industrial waste water, and its composition is complicated, and harmful substance concentration is too high, has great consumption effect to management manpower and management material resources, is unfavorable for the normal production action in laboratory. For example, chemical precipitation is often used in China for treating heavy metal waste liquid, but different types of heavy metals contained in different waste liquids have large differences in treatment methods and cannot be considered in a whole. For some test drugs, the general processing method is to collect them in a suitable container, label them, and keep them by a special person to prevent leakage and corrosion.
The liquid laboratory waste liquid is processed into solid substances, which is more beneficial to safe storage and management, and the agar has wide application in biological, medical and chemical industries and is generally used for manufacturing agar blocks to meet specific requirements. Naturally cooling agar at room temperature to obtain strong gel substance with cross-linked network structure, wherein the medium can be contained in the gaps of the network structure and cannot freely diffuse. The grease is easy to absorb water and contain other substances, can be conveniently shaped in liquid and semisolid states, and the obtained grease block is not easy to break and is easy to store.
Disclosure of Invention
The invention aims to provide a process and a system for solidifying inorganic chemical detection laboratory waste liquid, which are used for treating liquid laboratory waste water into solid substances, are more beneficial to safe storage and management, change the characteristics of easiness in leakage, easiness in seepage and amorphousness of liquid after agar is solidified, reduce the volume of waste by changing the substance form and reduce the occupied area of the waste, and are an environment-friendly and economic waste liquid treatment method.
The technical scheme of the invention is as follows:
a waste liquid curing process for inorganic chemical detection laboratories comprises the following specific steps:
a. acid-base classification collection of inorganic chemical detection laboratory waste liquid by using a waste liquid collection container;
b. mixing the waste liquid, and adjusting acid-base neutralization and pH value according to requirements to obtain a solution to be treated and a precipitate;
c. converting the curing agent into a liquid state, transferring the curing agent and the solution to be treated to a stirring device, uniformly stirring, transferring to a container, standing, cooling and curing;
d. collectively dewatering the solidified material and the aforesaid precipitated material, leaving a dried solid crushed material;
e. and sealing and storing the solid crushed aggregates.
In the step b, measuring the pH value of the mixed solution, if the pH value is less than 7.2, adding alkali liquor to ensure that the pH value of the solution is greater than 7.2, then cooling to room temperature, carrying out suction filtration on the solutions to obtain a clear solution for later use, and wrapping and collecting the obtained precipitate with suction filtration paper; and heating the obtained clear solution in a water bath, and keeping the temperature of the water bath at 50 ℃.
In the step c, the curing agent is agar, the agar and water are heated to 85-90 ℃ together to be converted into hot agar solution, and the temperature of the agar solution is cooled to 50-60 ℃ and kept constant to maintain a liquid state.
And c, the stirring blade of the stirring device in the step c is 20mm away from the bottom of the mixed solution, and the stirring speed is 80 rpm to avoid generating vortex.
The container in step c is made of HDPE mould.
And d, transferring the solidified substance and the precipitate substance into a drying box, drying by adopting a calcium chloride type drying agent in the drying box, and naturally dehydrating the whole drying box in a ventilated and cool environment.
The utility model provides an inorganic chemistry detects laboratory waste liquid curing system, includes waste liquid collection device, waste liquid mixing vessel, suction filtration device, stirring mixing arrangement and drying device.
The waste liquid collecting device comprises an acid liquid collecting device and an alkali liquid collecting device and is used for collecting acid liquid and alkali liquid generated in an inorganic chemical detection laboratory in a classified manner and transferring the acid liquid and the alkali liquid to a waste liquid mixing container;
the waste liquid mixing container is used for carrying out acid-base neutralization reaction and pH value adjustment on acid liquor and alkali liquor generated in an inorganic chemical detection laboratory and collected by the waste liquid collecting device;
the suction filtration device is used for carrying out suction filtration on the solution in the waste liquid mixing container;
the stirring and mixing device is used for uniformly mixing and stirring the mixed solution after suction filtration and the solution melted by the agar and transferring the mixed solution to an HDPE (high-density polyethylene) mould;
the HDPE mould is used for standing, cooling and solidifying the stirred and mixed solution to obtain a solidified substance;
the drying device dehydrates and dries the precipitated substance and the solidified substance.
Stirring mixing arrangement includes the agitator, installs agitator motor at mixing vessel's top, and the puddler that stretches into in the mixing vessel is installed to agitator motor's lower extreme, installs stirring vane on the puddler, mixing vessel is last still to be provided with the detachable filling opening, and the lower extreme of filling opening is connected and is stretched into the liquid feeding pipe in the mixing vessel, mixing vessel's bottom still is provided with the liquid outlet with mixed solution exhaust clean.
Stirring vane is double-deck blade, and bottom blade is 20mm from mixing vessel bottom, liquid feeding pipe is 10mm from mixing vessel bottom.
Drying device includes the drying box, and drying box installs on upper portion and installs the case lid sealed with the drying box, is provided with the partition board seat on drying box inside wall, and the partition board seat is gone up the installation division board and is used for becoming the multilayer with the internal partitioning of drying box, places the drier layer that is used for the dehydration to mixed solution on the top division board, places sediment filter paper package and solidification material on lower division board, and sediment filter paper package and solidification material dehydration become futilely, the division board is including being used for supporting the hangers that separates the board seat, and the center of division board is to undercut formation layer board, and equidistant seting up is used for making things convenient for the bleeder vent that the aqueous vapor stream circulated to drier layer on the hangers.
Compared with the prior art, the invention has the beneficial effects that:
(1) the liquid inorganic chemical laboratory waste liquid is processed into solid substances, so that the safe storage and management are facilitated, and the pollution of the discharge of the inorganic chemical laboratory waste liquid to the environment is avoided;
(2) the volume of the waste is reduced, and the occupied area of the waste is reduced;
(3) the inorganic chemical laboratory waste liquid absorbing material is pollution-free and is generally easy to obtain;
(4) in each stage of the treatment process, common means of an inorganic chemical laboratory are not separated, and the planning and safety regulation of the laboratory are met;
(5) if the solidified waste liquid is sent to a special treatment unit, the chemical property of the curing agent does not need to be specially considered in the treatment stage, and the treatment process is simplified.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Fig. 2 is a block diagram of the system of the present invention.
FIG. 3 is a schematic structural diagram of the stirring and mixing device of the present invention.
Fig. 4 is a schematic structural view of the drying box of the present invention.
Fig. 5 is a schematic top view of the partition plate of the present invention.
FIG. 6 is a schematic diagram of a side view of the partition plate of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, the present invention provides a technical solution:
an inorganic chemistry detection laboratory waste liquid solidification system comprises a waste liquid collecting device 1, a waste liquid mixing container 2, a suction filtration device 3, a stirring and mixing device 4 and a drying device 5;
the waste liquid collecting device 1 comprises an acid liquid collecting device and an alkali liquid collecting device and is used for collecting acid liquid and alkali liquid generated by an inorganic chemical detection laboratory in a classified manner and transferring the acid liquid and the alkali liquid to the waste liquid mixing container 2;
the waste liquid mixing container 2 is used for carrying out acid-base neutralization reaction and pH value adjustment on acid liquor and alkali liquor generated in an inorganic chemical detection laboratory and collected by the waste liquid collecting device 1;
the suction filtration device 3 is used for suction filtration of the solution in the waste liquid mixing container 2;
the stirring and mixing device 4 is used for uniformly mixing and stirring the solution subjected to suction filtration and the solution melted by the agar and transferring the solution to an HDPE (high-density polyethylene) die;
the HDPE mould is used for standing, cooling and solidifying the stirred and mixed solution to obtain a solidified substance;
the drying device 5 dries and dehydrates the sediment filter paper packet and the solidified substance.
Referring to fig. 3, the stirring and mixing device 4 includes a mixing container 40, a stirring motor 41 is installed at the top of the mixing container 40, a stirring rod 42 extending into the mixing container 40 is installed at the lower end of the stirring motor 41, a stirring blade 43 is installed on the stirring rod 42, a detachable liquid filling port 45 is further provided on the mixing container 40, the lower end of the liquid filling port 45 is connected to a liquid filling conduit 46 extending into the mixing container 40, and a liquid outlet 44 for discharging a mixed solution is further provided at the bottom of the mixing container 40.
In order to ensure uniform mixing, a heating device is also arranged at the bottom of the mixing container 40 to heat the mixed solution in the container, so as to ensure that agar is not solidified before the mixed solution is discharged.
The stirring blade 43 is a double-layer blade, the bottom layer blade is 20mm away from the bottom of the mixing container 40, and the liquid adding guide pipe 46 is 10mm away from the bottom of the mixing container 40.
Referring to fig. 4-6, the drying device 5 includes a drying box 50, a box cover 51 installed on the upper portion of the drying box 50 for sealing the drying box, a partition plate seat 52 installed on the inner sidewall of the drying box 50, partition plates 53 installed on the partition plate seat 52 for partitioning the interior of the drying box 50 into multiple layers, a drying agent layer 54 for dehydrating the mixed solution placed on the top partition plate, a sediment filter paper pack and a solidified material 55 placed on the bottom partition plate for dehydrating and drying the sediment filter paper pack and the solidified material, the partition plate 53 including lugs 530 for supporting the partition plate seat 52, a support plate 531 formed by sinking the center of the partition plate 52 downward, and air holes 532 provided on the lugs 530 at equal intervals for facilitating the circulation of water vapor to the drying agent layer 54.
A waste liquid curing process for inorganic chemical detection laboratories comprises the following specific steps:
a. acid-base classification collection waste liquid is carried out by using a waste liquid collection container;
b. mixing the waste liquid, measuring the pH value of the mixed solution, adding alkali liquor if the pH value is less than 7.2 to ensure that the pH value of the solution is greater than 7.2, slightly cooling to room temperature for a moment, carrying out suction filtration on the solutions to obtain clear solutions for later use, and wrapping and collecting the obtained precipitate with suction filtration paper; heating the obtained clear solution in water bath, and keeping the temperature of the water bath at 50 ℃;
c. heating agar and water to 85-90 ℃ together to convert the agar and the water into hot agar solution, and cooling the agar solution to 50-60 ℃ and keeping the constant temperature to maintain a liquid state;
then transferring the solution and the solution to be treated to a stirring device for uniform stirring, wherein the distance between a stirring blade of the stirring device and the bottom of the mixed solution is 20mm, the stirring speed is 80 r/min to avoid generating vortex, and transferring the solution to an HDPE (high-density polyethylene) die for standing, cooling and solidifying;
d. transferring the solidified substance and the sediment filter paper bag into a drying oven, drying in the drying oven by adopting a calcium chloride type drying agent, and naturally dehydrating the whole drying oven in a ventilated and cool environment to leave dried solid crushed materials;
e. and sealing and storing the solid crushed aggregates.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The inorganic chemical detection laboratory waste liquid curing process is characterized by comprising the following specific steps of:
a. acid-base classification collection of inorganic chemical detection laboratory waste liquid by using a waste liquid collection container;
b. mixing the waste liquid, and performing acid-base neutralization and clarification according to needs to obtain a solution to be treated and a precipitate;
c. converting the curing agent into a liquid state, transferring the curing agent and the solution to be treated to a stirring device, uniformly stirring, transferring to a container, standing, cooling and curing;
d. collectively dewatering the solidified material and the aforesaid precipitated material, leaving a dried solid crushed material;
e. sealing and storing the solid crushed aggregates;
in the step b, measuring the pH value of the mixed solution, if the pH value is less than 7.2, adding alkali liquor to ensure that the pH value of the solution is greater than 7.2, then cooling to room temperature, carrying out suction filtration on the solutions to obtain a clear solution for later use, and wrapping and collecting the obtained precipitate with suction filtration paper; heating the obtained clear solution in water bath, and keeping the temperature of the water bath at 50 ℃;
in the step c, the curing agent is agar, the agar and water are heated to 85-90 ℃ together to be converted into hot agar solution, and the temperature of the agar solution is cooled to 50-60 ℃ and kept constant to maintain a liquid state.
2. The inorganic chemical detection laboratory waste liquid solidification process according to claim 1, wherein the stirring blade of the stirring device in the step c is 20mm away from the bottom of the mixed solution, and the stirring speed is 80 rpm to avoid generating vortex.
3. The inorganic chemical detection laboratory waste liquid solidification process of claim 1, wherein the container in the step c is made of HDPE mold.
4. The inorganic chemical detection laboratory waste liquid solidification process according to claim 1, wherein in the step d, the solidified substance and the precipitate substance are transferred to a drying oven, the drying oven is dried by a calcium chloride type drying agent, and the whole drying oven is placed in a ventilated and cool environment for dehydration.
5. An inorganic chemical detection laboratory waste liquid solidification system for performing waste liquid solidification according to the inorganic chemical detection laboratory waste liquid solidification process of any one of claims 1 to 4, characterized by comprising a waste liquid collection device (1), a waste liquid mixing container (2), a suction filtration device (3), a stirring and mixing device (4) and a drying device (5);
the waste liquid collecting device (1) comprises an acid liquid collecting device and an alkali liquid collecting device and is used for collecting acid liquid and alkali liquid generated by an inorganic chemical detection laboratory in a classified manner and transferring the acid liquid and the alkali liquid to a waste liquid mixing container (2);
the waste liquid mixing container (2) is used for carrying out acid-base neutralization reaction and pH value adjustment on acid liquor and alkali liquor generated in an inorganic chemical detection laboratory and collected by the waste liquid collecting device (1);
the suction filtration device (3) performs suction filtration on the solution in the waste liquid mixing container (2);
the stirring and mixing device (4) is used for uniformly mixing and stirring the filtered clear solution and the filtered agar solution and then transferring the mixture to an HDPE (high-density polyethylene) die;
the HDPE mould is used for standing, cooling and solidifying the stirred and mixed solution to obtain a solidified substance;
the drying device (5) dries and dehydrates the precipitated substances and the solidified substances;
the stirring and mixing device (4) comprises a mixing container (40), a stirring motor (41) is installed at the top of the mixing container (40), a stirring rod (42) extending into the mixing container (40) is installed at the lower end of the stirring motor (41), a stirring blade (43) is installed on the stirring rod (42), a detachable liquid adding opening (45) is further formed in the mixing container (40), the lower end of the liquid adding opening (45) is connected with a liquid adding guide pipe (46) extending into the mixing container (40), and a liquid outlet (44) for discharging mixed solution completely is further formed in the bottom of the mixing container (40);
stirring vane (43) are double-deck blade, and bottom layer blade is 20mm from mixing vessel (40) bottom, liquid feeding pipe (46) are 10mm from mixing vessel (40) bottom.
6. The inorganic chemical detection laboratory waste liquid solidification system according to claim 5, wherein the drying device (5) comprises a drying box body (50), a box cover (51) for sealing the drying box is installed on the upper portion of the drying box body (50), a partition plate seat (52) is arranged on the inner side wall of the drying box body (50), a partition plate (53) is installed on the partition plate seat (52) and used for partitioning the interior of the drying box body (50) into a plurality of layers, a drying agent layer (54) for dehydrating the mixed solution is placed on the top partition plate, a sediment filter paper bag and a solidified substance (55) are placed on the lower partition plate, the sediment filter paper bag and the solidified substance are dehydrated and dried, the partition plate (53) comprises a hanging lug (530) for propping against the partition plate seat (52), a supporting plate (531) is formed by downwards sinking the center of the partition plate (53), and air holes (532) for facilitating the water and air to flow to the drying agent layer (54) are formed at equal intervals on the hanging lug (530) .
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2019
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