BWRs: boiling water reactors
PWRs: pressurized water reactors
HWRs: heavy-water reactors
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How to handle radioactive wastes at nuclear power stations
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Where does powdered resins be used at nuclear power plants?
Powdered resins are seldom used in PWRs of nuclear power plant, but are commonly used in BWRs of nuclear power plant with pre-coated filter demineralizers. The cleanup system of heavy-water reactors (HWRs) works mainly with once-through ion-exchange techniques to recycle heavy water.
Posted in Powdered resin application
What does main source of radioactive wastes come from ?
I think the main source of radioactive wastes comes from nuclear power stations.
Nuclear power is economically competitive and environmentally clean compared to most other forms of energy used in electricity production, so nuclear power stations gradually become a more and more important part of the national energy system in many countries.
With a result of the operation of nuclear reactors, some radioactive wastes are produced. Even though the wastes generated at nuclear power plants are rather low in activity and the radionuclides contained therein have a low radiotoxicity. However, nuclear power plants are the largest in number among all nuclear facilities and produce the greatest volume of radioactive wastes.
In my opinion, main source of radioactive waste still comes from nuclear power staions.
Posted in Waste handling
How to handle liquid radioactive wastes at nuclear power stations
Liquid radioactive waste generated at nuclear power plants usually contains soluble and insoluble radioactive components (fission and corrosion products) and nonradioactive substances. The general objective of waste treatment methods is to decontaminate liquid waste to such an extent that the decontaminated bulk volume of aqueous waste can be either released to the environment or recycled. Waste concentrate is subject to further conditioning, storage, and disposal. Because nuclear power plants generate almost all categories of liquid waste, nearly all processes are applied to treat radioactive effluents. Standard techniques are routinely used to decontaminate liquid waste streams. Each process has a particular effect on the radioactive content of the liquid. The extent to which these are used in combination depends on the amount and source of contamination. Four main technical processes are available for treatment of liquid waste: evaporation; chemical precipitation/flocculation; solid-phase separation; and ion exchange.
Posted in Water treatment