Waste Management GuidelinesUniversity of Tsukuba

This pamphlet provides guidelines to faculty, staff and students on the appropriate collection, treatment and disposal of waste generated through their educational research, medical care, and administrative activities.The Office of Environmental and Safety Management provides guidance and advice on, and also supervises, the handling of waste. The pamphlet illustrates the following issues on the sorting and treatment of waste on campus:

Categories of waste and wastewaterLiquid laboratory waste and wastewater treatment facilitieson the Tsukuba campusFlow chart for sorting laboratory wasteSorting laboratory waste for separate collectionApplication procedure for laboratory waste treatmentReviewing the Office of Environmental and Safety Managementwebsite.Management of poisonous and deleterious substancesPRTR Law and Ibaraki Prefectural Regulation No. 9

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実 験 流 し

3回目以降の洗浄水のみ

実験廃液はポリタンクへ

生 活 流 し

生活系排水のみDaily-life waste

公共下水道へ直接排出されます実験廃液はポリタンクへ

Categories of waste and wastewater

Burnable waste

Non-burnablewaste

Empty cans

Empty bottles

PET bottles

Fluorescent lamps

Dry batteries

Paper, fabric, wood, plastic, and rubber products, food waste,solidi�ed cooking oil, etc.

Glass, metal, and ceramic ware, complex products consisting ofa combination of these materials, etc.

Empty food and drink cans.(Heavily soiled cans are handled as non-burnable waste.)

Empty food and drink bottles.(Heavily soiled bottles are handled as non-burnable waste.)

PET bottles for drinks and others.(Heavily soiled bottles, as well as caps, are handled as burnable waste.)

Fluorescent lamps contain mercury.(Broken �uorescent lamps are handled as non-burnable waste.)

Some dry batteries contain mercury.

Oversizedgarbage, etc.

Unnecessary �xtures, furniture, electrical appliances (other than those below),bicycles, etc.

Recyclableelectrical appliances

Air conditioners, TV sets, refrigerators, washing machines (any such itembelonging to an individual falls outside the scope of these guidelines)

Speci�c waste Department-speci�c waste

Liquid laboratory waste, solid laboratory waste, animal laboratory waste, waste reagents

General waste

Waste-collection boxes are set up on campus. To be collected on predetermined days.

Incineration

Land�ll

Recycling

Other waste

Laboratorywaste

Wastewater tobe drained to

a day-to-day sink

Wastewater to be drained to

a laboratory sink

The carelessness of a single individual can instantly prevent us from meeting our targets.

■Ef�uent standard for sewage systemCyanide compounds, alkyl mercury compounds:Total mercury:Carbon tetrachloride:Cadmium:Lead, Arsenic, benzene: Dichloromethane:Hexavalent chromium, 1, 4-dioxane:Boron:

Must not be detected.No more than 0.0005 mg /ℓNo more than 0.002 mg /ℓNo more than 0.003 mg /ℓNo more than 0.01 mg /ℓNo more than 0.02 mg /ℓNo more than 0.05 mg /ℓNo more than 1mg /ℓ

To be collected on days predetermined on a department-by-department basis.

Application for collection must be made individually by the waste generator when collection is required.

Categories of waste and wastewaterLiquid laboratory waste and wastewater treatment facilitieson the Tsukuba campusFlow chart for sorting laboratory wasteSorting laboratory waste for separate collectionApplication procedure for laboratory waste treatmentReviewing the Office of Environmental and Safety Managementwebsite.Management of poisonous and deleterious substancesPRTR Law and Ibaraki Prefectural Regulation No. 9

○Day-to-day sinks are provided in of�ces, hot-water service rooms, lavatories, and so on.

○Wastewater is discharged directly into the public sewage system.

○Day-to-day wastewater such as tea-making water, and non-toxic laboratory wastewater such as buffer solutions, must be drained to these sinks.

○Floc-like suspended organic substances, animal tissue and feces, sterilized growth media, and so on must be drained to a WC with a large waste pipe.

○Dilute laboratory wash wastewater (tertiary and subsequent wash water for laboratory instruments) must be drained to these sinks.

○Floc-like suspended organic substances, animal tissue and feces, growth media, and so on must not be drained to these sinks.

○Day-to-day wastewater such as tea-making water must not be drained to these sinks, either.

About 1000 kiloliters of general laboratory wastewater is discharged daily by the laboratories of the University.So, for example, if a mere 20 grams of dichloromethane were to be rinsed down a sink, our target criteria would be exceeded.

If you accidentally pour mercury, cyanide compounds, or other toxic substances down a sink, turn off the water immediately and contact the Of�ce of Environmental and Safety Management at 2891.

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Liquid laboratory waste and wastewater treatment facilities at Tsukuba Campus

Identify the contaminated wastewater path

Stop the use of the sink or stop the water supply

Clean or replace the sink and drainpipe

■Dilute laboratory wash wastewater treatment facilities (Central district)

Storage tank

Liquid laboratory waste(Waste solutions, primary and secondary washing water)

Laboratory

Day-to-day sink

Day-to-day drainpipe

Public sewage system Equipment for turning wastewater into water to be recycled

Wastewater treatment equipment

Sludge storage

Liquid waste

treatment equipment Waste

storeroom

Industrialwaste

disposersTone Puri�cation Center, Ibaraki Prefecture

Tone River

Laboratory sink(Tertiary and subsequent washing water)

Treatmentusing

iron powdermethod

Treated water storage tank

Wastewater monitoring tank

Wastewater monitoring

(Hg, Pb, CN, and pH)

Wastewatermonitoring

(Toxic substances)

Laboratory wastewater purge system

Dilute laboratorywashing water drain pipe

Inorganic liquid waste treatment facilities

Organic liquid waste storage facilities

Inorganic liquid waste

Organic liquid waste

Steps to be followed if mercury or other toxic substances are drained into the monitoring tank or the dilute wash wastewater storage tank

Fromlaboratory

Treatment chemicals

Wastewaterstorage tank

Screen Flocculationtank

Rapid mixingchamber

Sand�ltrationtower

Activatedcarbontower

Disinfectant

To eachbuilding

Filter-washing wastewater treatment facilities

Filter-washingwater

Tank forwater to

be recycled

Sludge removalequipment

Sludge

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Flow chart for sorting laboratory waste

Contains organicsubstances?

Discharge

Contains selenium, cyanide compounds, mercury, fluorine, phosphorus, arsenic, chromates, or heavy metals (cadmium, iron, lead etc.)?

Solid

Liquid

Photographic liquid waste?

Solid or Liquid?

Adjust the pH tobetween 5 and 9

Separatedliquid

Organic layer

Laboratory animal orits �oorcloth?

Contains toxic substancessuch as mercury?

Fixer solution?

Developer solution?

Contains solids?

Complex organicmetal compound?

Halogen-containingsolvent waste?

Contains phenols?

Contains water layer?

Waste oil?

General organicsolvent waste

Waste oil

Aqueous organicsolvent waste

Liquid wastecontaining phenols

Halogen-containingsolvent waste

Use chart below

Filter out solid waste, anddischarge as solid waste

Developer solution

Fixer solution

Solid general waste

Solid laboratory waste

Animal laboratory waste

Sort separately in this order: selenium, cyanide compounds, mercury, �uorine or phosphorous, arsenic, chromates, and heavy metals

To day-to-day sink(Acidic waste, alkaline waste, and non-toxic inorganic liquid waste with a concentration of 1% or less must be adjusted to a pH of 5 to 9 before being discharged.)

Separatedliquid

Organiclayer

Metal complex and organic metalcompound discharge

Contains halogenatedorganic metal?

Contains a water layer?

Metal-containing waste oil?

Metal-containing organic layer?

Liquid waste other thanthe above that contains metal?

Halogen-containing organicmetal liquid waste

Aqueous organic metalliquid waste

Metal-containing waste oil(e.g. oil-based paints)

General organic metal liquid waste

Separate and store as inorganicliquid waste

If the waste contains both metal ions and organic substances, separate and store following the method for sorting organic substances. Be sure to enumerate and describe the main metallic elements present when separating and storing.Separately sort and describe the substances if the waste containstoxic metals (e.g.mercury, arsenic, lead).

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

No

No

No

No

No

No

Yes

Yes

Yes

Yes

No

No

No

No

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Flow chart for sorting laboratory wastes Sorting laboratory waste for separate collection

Do not �llmore than80% full.

Leak-free polyethylenetank for transportationon campus.

●Metallic mercury is to be collected separately.●Refer to the quick reference sheet for separation and collection when separating and　collecting complexes and organic metal compounds.●Phosphoric acid and calcium hydroxide wastewater must be collected separately as �uorine　wastewater.●Magnesium waste must be collected separately as general heavy metal wastewater.●The department performing operations that generate wastewater containing Be, Tl, and 　Os are responsible for treating it at its source.

Never mixwith organicsubstances

Place general organic solvent waste ina 10-liter polyethylene tank.

If the container is used for a solvent subjectto strict discharge regulations (such asbenzene), wash it out at least twice, usingethanol or another appropriate substance.

Do not mix toxic metals such as mercury and arsenic.

●Record the names of the chemicals collected and their approximate concentrations.　For PRTR class I designated substances and any substances speci�ed in the Prefectural　Regulations, in particular, record the amounts collected.

●Sort out waste having the highest concentration of toxic components.●For mixed waste, sort out the waste having the highest concentration of toxic components, according to the priority given below. (See also the chart on the previous page.)

●Deposits that are formed in liquid waste do not have to be removed.●Glass and other debris must be removed.

Record the contents

Sort priority for separate collection

Liquid waste pH adjustment

Solids in liquid waste

Liquid waste separated into two layers

Miscellaneous

Stopper solution

●Record the names of the chemicals collected and their approximate concentrations.　For PRTR class I designated substances and any substances speci�ed in the Prefectural　Regulations, in particular, record the amounts collected.

●Sort out that waste with the highest concentration of toxic components.●For mixed waste, sort out that waste having the highest concentration of toxic components,　according to the priority given below. (See also the chart on the previous page.)

If there is no more than 5% halogen-containing solvent: General organic solvent wasteIf there is more than 5% halogen-containing solvent: Halogen-containing solvent wasteWaste containing phenols must be sorted as phenol waste for separate collection.

●Must be adjusted to a pH of 5 to 9.

●Deposits that are formed from in liquid waste do not have to be removed.●Glass and other debris must be removed.

●Separate the liquids and handle the water layer as aqueous organic solvent waste.

●Refer to the quick reference sheet for separation and collection when separating and　collecting complexes and organic metal compounds.●The types of liquid waste listed below cannot be treated by outside contractors, and must 　be treated and detoxi�ed at the source.

Explosive substances, reactive hazardous substances that may cause combustion,decomposition explosions, polymerization, etc., polychlorinated biphenyl, radioactivesubstances, internationally controlled materials, pathogens, highly toxic substances,special ignitable substances (such as carbon disul�de and diethyl ether)

Inorganic liquid waste

Organic liquid waste

Photographic liquid waste

Record the contents

Liquid waste pH adjustment

Solids in liquid waste

Miscellaneous

Sort priority for separate collection

Do not �llmore than80% full.

Leak-free polyethylenetank for transportationon campus.

Store primary andsecondary washing water inthe container.

1. Selenium wastewater 2. Cyanide wastewater 3. Mercury wastewater4. Fluorine wastewater 5. Arsenic wastewater 6. Chromate wastewater7. Common heavy metal wastewater

●Only cyanide wastewater must be adjusted to a pH of 10 or greater.

Fixer solutionDeveloper solution

●Must be neutralized and collected separately as aqueous organic 　solvent waste.●Small quantities may be neutralized and drained into a day-to-day sink.

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Solid laboratory waste

Animal laboratorywaste

Biologically hazardouswaste

Arts and crafts waste

Waste reagents

Flow chart for sorting laboratory wastes Sorting laboratory waste for separate collection

Record the collected toxic substances.

Attach copies ofthe treatmentapplication form.

Animalcarcasses,etc.

Place in a paper bag. Store the bag in a freezerbefore transportation.

●Handle animal feces, �oorcloths, remaining feed, etc. according to the rules governing animal carcasses.●Waste that includes heavy metals or toxic substances: Contact the Of�ce of Environmental and Safety　Management　

●This type of waste is not handled by the Of�ce of Environmental and Safety Management.　Sterilized growth media and the like must be drained into a day-to-day sink.　Sterilized containers, instruments, and others must be separated from the contents and then be disposed of as 　general waste.　When handling this waste, either do not use a bag with a biohazard mark, or erase the mark and indicate that 　the contents have been sterilized.●For information on disposing of growth media that includes heavy metals, contact the Of�ce of Environmental and 　Safety Management.

●Pigment wastewater, dye wastewater, printing material treatment wastewater, pottery wastewater,　solid waste, and others must be handled according to the rules governing liquid laboratory waste or the rules　governing solid laboratory waste.●Waste must be treated appropriately according to its properties.　Some waste contains both heavy metals and organic substances.　The website of the Of�ce of Environmental and Safety Management provides information on the toxic-metal　content and chemical composition of major pigments.

●To dispose of reagents that are no longer necessary, an application must be �led with the Of�ce of Environmental 　and Safety Management, using the "waste reagent treatment application form".　This waste will be handled as "industrial waste subject to special controls or industrial waste", and treatment 　　must be entrusted to outside contractors.●When there is a small amount of reagent remaining in a reagent bottle, produce inorganic or organic liquid waste 　whenever you can at your own responsibility.

Burnable solidlaboratory waste

Metallic mercury

Noncombustible solidlaboratory waste

Mercury-containing solidlaboratory waste

Place the plastic bag containingthe waste in another bag to prevent it from splashing or leaking, and then close the opening tightly.

Close the cap of any bottle containing metallicmercury tightly, wrap the bottle in packaging, andthen place it in a plastic bag.

Attach a label stating the name of the waste generator, the contents, the substances contained in the waste, the means of sterilization, and other necessary information.

・Wrap it completely in newspaper, etc.・Remove any noncombustible

substances.・If the waste presents a

biohazard risk, sterilize it in an autoclave.

Place the colored plastic bagcontaining the waste in another bag to prevent the waste and odor from leaking, and then close the opening tightly.

Disposing of reagent bottles1. Clean and dry the inside of the reagent bottle. Place the water used for cleaning the bottles in a liquid waste container and apply for collection and

treatment. Draining this water in a laboratory sink is strictly prohibited.2. When cleaning reagent bottles be sure to wear safety equipment such as protective goggles and gloves. Harmful reagents such as organic solvents,

speci�ed chemical substances, and poisonous or deleterious substances must be handled inside a draft chamber.3. Once the reagent bottles are clean, remove the reagent label (or, if the label cannot be removed, write “Clean” on the label), sort the bottles into glass

and plastic bottles, and place them in the appropriate containers at the waste collection station.4. Reagent bottles that contain highly toxic substances, reactive hazardous substances, PCB, or organic metallic compounds, must not be cleaned and

discarded. For these bottles, apply to have them treated as waste reagent.

Record the contents

Miscellaneous

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1

2

1

3

4

The following application instructions and forms are provided as Excel �les: Application for Inorganic Liquid Waste Treatment, Application for Organic Liquid Waste Treatment, Application for Metal Complex and Organic Metal Compound Treatment, Application for Silver Halide Photographic Liquid Waste Treatment, Application for Solid Laboratory Waste Treatment, Application for waste Reagents

Notes on storing waste

Store waste in a location that is protected fromsunlight and rain and which is not easilyaccessible to outsiders.(Do not place the waste in the corridor.)Be careful not to cause odor leaks or accidents.

When transporting waste, take special care so that no liquid or odor leaks occur.

Application procedure for laboratory waste treatment

The Of�ce of Environmental and Safety Management will send you one ofthe tags shown below, according to the type of waste.

You, the applicant, must carry the waste to the treatment facilities in the prescribed style of packaging on the designated date and time.

The Of�ce of Environmental and Safety Management will perform a veri�cation of the waste and then receive it.

A person who discharges waste must download the application form for laboratory waste treatment from the Of�ce of Environmental and Safety Management website, �ll in the required items, andsubmit it as an e-mail attachment to the Of�ce of Environmental and Safety Management.

When carrying it, make sure that you are accompanied by the person responsible for the experiment(the waste generator), who is familiar with the contents.

Phenols Aqueous organic Waste oil Halogen-containing General organic Inorganic waste

The Of�ce of Environmental and Safety Management does not return or dispose of used high-pressure gas canisters. Please contact the gas dealer directly and request collection and disposal.(These canisters cannot be discarded as oversized garbage even if they are empty.)

Of�ce of Environmental and Safety ManagementPhone: +81-29-853-2891 (2891 from an on-campus telephone)E-mail address: jitukan@un.tsukuba.ac.jp

If more than a certain amount of any of the 462 class I designated chemical substances identi�ed by the Law Act on Con�rmation, etc. of Release Amounts of Speci�c Chemical Substances in the Environment and Promotion of Improvements to Management Thereof (PRTR Law) is used in a year at the University, the University must report the amounts released and transferred to the government via the prefectural governor. The Of�ce of Environmental and Safety Management surveys and totals the amounts of the designated substances handled at the University. As a result of a pilot survey, it is expected that the substances listed below will exceed the limits on amounts handled, above which reporting is required:acetonitrile, xylene, chloroform, dichloromethane, n-hexane, N,N-dimethylformamide, toluene, phenol, benzene, formaldehydeThe following are designated chemical substances that are handled in large amounts every year:acrylamide, aniline, ethylenediamine, ethylenediaminetetraacetic acid, carbon tetrachloride, 1,4-dioxane, trichloroethylene, pyridine Of the 37 substances designated under Ibaraki Prefectural Ordinance No. 9 (regulation concerning the preservation of the living environment in Ibaraki Prefecture), the following are all handled in large amounts annually at the University:acetone, ammonia, hydrogen chloride, ethyl acetate, n-butyl acetate, methanol, methyl ethyl ketone, sulfuric acid (including SO3)For the above designated substances, remember to record the amounts stocked, purchased, and discarded (in kg units).

Management of poisonous anddeleterious substances

Chemical substances addressed by PRTRand by Ibaraki Prefectural Ordinance No.9

Storing poisonous and deleterious substances

Using poisonous and deleterious substances

■Store any such materials in a tip-resistant, metallic chemical cabinet, and lock the cabinet.

■Af�x a sticker indicating the presence of non-medical poisonous and deleterious substances to the chemical cabinet.

■Do not store such materials on a laboratory table or in a glass chemical cabinet.

■For each reagent, record the name, the poisonous and deleterious substance cla ification ottle tyle date of rcha e amo nt rcha ed date of e age and any other nece ary information■ fter e immediately ret rn it to the ca inet■ o not di o e of any oi ono and

deleterio tance itho t caref l con ideration

Reviewing the Of�ce of Environmental and Safety Management website !

http://anzenkanri.tsukuba.ac.jpU R L

( 2016.Jan. )