Rubber Bucket

Content
1. What is rubber bucket?
2. Laboratory waste liquid treatment method (rubber bucket)
    2.1 Rubber water buckets
    2.2 Rubber bucket toolstation
3. How to buy rubber bucket?

According to the different chemical properties of waste liquids, laboratory waste liquids must be sorted and stored in containers that will not be corroded by the waste liquids, and it is also necessary to write labels for the types of waste liquids and when to store them and stick them on the containers. After a certain amount of waste liquid is stored, different treatment processes are then used to recover the waste liquid according to the different types of waste liquid. Rubber bucket plays an important role in the collection, storage, and treatment of laboratory waste liquids.

Lab rubber buckets are resistant to the corrosive effects of many chemicals.

a. Good chemical resistance

b. Safety handle construction

c. Stainless steel handle with rubber grip

d. Internal scale markings

Some rubber buckets have stainless steel carry handles with hard rubber grips and a safety grip construction on the bottom for stable tipping. They are internally marked with a scale of 1-12 quarts and 1-3 gallons.

The high concentration of waste acid and alkali solution should be discharged after neutralization to neutral. High concentrations of organic solvents containing small amounts of measured substances and other reagents should be recycled. High-concentration waste liquids for recycling should be stored centrally for recycling; low-concentration ones should be discharged after treatment. Storage containers and storage conditions should be determined according to the nature of waste liquids, and different waste liquids are generally not allowed to be mixed, and protected from light and heat sources to avoid adverse chemical reactions. The waste liquid storage containers must be labeled with the type, storage time, etc. A rubber bucket can be used when collecting some waste liquids.

Waste liquids containing mercury, chromium, lead, cadmium, arsenic, phenol, and cyanide must be treated to meet the standards before discharge, and the laboratory treatment methods are as follows.

If metallic mercury is accidentally scattered in the laboratory (e.g., broken thermometers), it must be removed promptly. If you use a dropper or a thin sheet of copper or copper wire soaked in an acidic solution of mercury nitrate, collect and cover with water in a beaker. Scattered mercury particles on the ground should be sprinkled with sulfur powder, generating less toxic mercury sulfide. There are two methods for dealing with it as follows.

a. Spray on acidified with a hydrochloric acid solution of potassium permanganate (5: 1000 volume ratio), after 1 to 2 hours to remove.

b. Sprayed with 20% aqueous ferric chloride solution, dry, and then remove (but the method cannot be used for metal surfaces, will produce corrosion).

For the treatment of waste liquid containing mercury, the waste liquid can first be adjusted to PH8~10 into an excess of sodium sulfide to generate mercury sulfide precipitation, and then add ferrous sulfate as a co-precipitant to generate iron sulfide precipitation can be precipitated by adsorption of mercury sulfide particles, and then static separation, the clear liquid can be discharged, and the residue can be roasted to recover mercury or made into mercury salt.

The PH of the waste solution is adjusted to 8~10 with alkali to generate Pb(OH)2 and Cd(OH)2 precipitates, then ferrous sulfate is added as co-precipitant, and the precipitates can be mixed with other inorganic substances for sintering treatment, and the clear liquid is discharged.

Chromium-containing waste liquid is added with reducing agents, such as ferrous sulfate, sodium sulfite, and iron filings, under acidic conditions to reduce hexavalent chromium to trivalent chromium, and then alkali is added, such as sodium hydroxide, calcium hydroxide sodium carbonate, etc., so that the three prices form Cr (OH)3 precipitate, and the clear liquid can be discharged. After the precipitation is dried, it can be treated by roasting method, so that it is roasted together with cinder, and can be landfilled after treatment.

Add calcium oxide to make the PH 8 to generate calcium arsenate and calcium arsenite precipitates, which co-precipitate in the presence of Fe3+. Or make the solution PH greater than 10 and add sodium sulfide, which reacts with arsenic to produce a precipitate of intolerable, low-toxicity arsenic sulfide. The test to produce arsenic-containing gas is carried out in a fume hood.

Low concentrations of the phenol-containing waste stream can be added with sodium hypochlorite or bleaching powder to make phenol oxidation city and carbon dioxide. High concentrations can be extracted using ethyl butyrate, after repeated extraction with a small amount of sodium hydroxide solution. After reconciling the PH, redistillation is carried out and used after purification.

For low concentration waste solution, sodium hydroxide can be added to adjust the PH to 10 or more, and then potassium permanganate powder (3%) can be added to make the cyanide decompose. If it is a high concentration, it can be treated by alkaline chlorination method, first, adjust the PH to 10 or more with alkali and add sodium hypochlorite or bleaching powder. After the sufficient call, the hydride decomposes into carbon dioxide and nitrogen gas and is placed for 24 hours to discharge. Cyanide containing fee also shall not be dumped indiscriminately or mixed with acid, as generating volatile hydrogen cyanide gas is highly toxic.

The waste liquid that does not work with each other can be treated with iron powder. Adjust the PH 3-4 of the waste liquid, add iron powder, stir for half an hour, adjust PH 9 or so with alkali, stir for 10 minutes, and add polymer coagulant to precipitate, the clear liquid can be discharged, and the precipitate is treated as waste residue. Waste acid and alkali can be neutralized and treated.

The trichloromethane waste solution was washed once with water, concentrated sulfuric acid (one-tenth of the amount of trichloromethane), pure water, and hydroxylamine hydrochloride solution (0.5% AR). Wash twice with redistilled water, dehydrate the washed trichloromethane with sewage calcium chloride, leave it for a few days, filter, and distill. The distillation rate was 1~2 drops per second, and the distillate with a boiling range of 60~62 degrees C was collected (under the label frame) and stored in a brown reagent bottle (no rubber stopper).

a. Try to recover the solvent and use it repeatedly without hindrance to the experiment.

b. For ease of handling, their collection classification is often divided into the following categories.
a) Combustible substances
b) Flame-retardant substances
c) Aqueous waste liquids
d) Solids, etc.

c. Substances that are soluble in water are easily lost as aqueous solutions. Therefore, care should be taken when recycling. However, solvents such as methanol, ethanol, and acetic acid can be easily decomposed by the action of bacteria. Therefore, the dilute solution of such solvents can be discharged after dilution with a large amount of water.

d. Waste liquids containing heavy metals, etc. are disposed of as inorganic waste liquids after decomposing their organic matter.

e. Use rubber bucket according to the actual situation. Choose containers that are not broken and will not be corroded by the waste liquid. Use qualified high-strength waste liquid drums or high-density polyethylene waste liquid drums that are resistant to strong acids and alkalis.

f. Labeling of waste liquid buckets. Before collection, the waste liquid bucket containing general chemical waste liquids is labeled with a "waste liquid classification label"; the waste liquid bucket containing highly toxic waste liquids is labeled with a "highly toxic waste liquid label". Checking the category of waste liquids according to the nature of the waste liquids to be collected. Fill in the room where the waste liquid is generated, the contact person, and the contact telephone number.

g. The waste liquids listed below cannot be mixed with each other.

a) Peroxides and organic matter
b) Cyanide, sulfide, hypochlorite, and acid
c) Volatile acids such as hydrochloric acid, hydrofluoric acid, and non-volatile acids
d) Concentrated sulfuric acid, sulfonic acid, hydroxy acid, polyphosphoric acid, and other acids with other
e) Ammonium salts, volatile amines, and bases

a. After the waste liquid drum is filled, the relevant waste liquid information must be registered at the laboratory waste disposal contact.

b. The waste liquid bucket (rubber bucket) must be stored in a designated location where it is safe and not accessible to the general public.

c. When storing waste liquid buckets, tighten the caps and place them neatly and upright.

d. If there is not enough space, it can be stacked under the condition of ensuring safety. The maximum is not more than three layers.

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