TP114 - Uredba o emisiji snovi in toplote pri odvajanju odpadnih voda v vode in javno kanalizacijo

Concerns principles of the constant rate injection method and the sudden injection method (integration method), and the principles of injection, sampling and analysis which apply for all types of tracer. The tracers used and their concentrations should be compatible with the legislation of each country regarding the occasional and short-durations discharges of foreign substances into natural waters.

Describes the tracers used (fluorescein, rhodamine B, acid yellow 7, sulfo rhodamine B, pyranine, and rhodamine WT), the tracer measurement (principle, field measurement and laboratory measurements), environmental factors affecting tracers, techniques for tracer injection, sampling techniques, analysis and computation.

This International Standard specifies the procedure of calibration of current-meters of rotating-element type as well as stationary-sensor type (electromagnetic type) in straight open tanks. It also specifies the types of tank, rating carriage and equipment to be used and the method of presenting the results. The procedure does not take into account any possible difference existing between the behaviour of a currentmeter moving in motionless water and that of a fixed current-meter in turbulent flow.

This International Standard provides a standard basis for the collection and processing of data for the determination of the uncertainties in measurements of discharge in open channels by velocity-area methods using current-meters. To determine the discharge in open channels by the velocity-area method, components of the flow (velocity, depth and breadth) need to be measured. The component measurements are combined to compute the total discharge. The total uncertainty in the computed discharge is a combination of the uncertainties in the measured components. Clause 4 of this International Standard deals with the types of errors and uncertainties involved. Clauses 5 and 6 present a standard procedure to estimate the component uncertainties by the collection and processing of the necessary data. This International Standard is intended to be applied to velocity-area methods that involve measurement of point velocities at a relatively small number of discrete depths and transverse positions in the flow crosssection, as described in ISO 748. This International Standard is not intended to be applied to measurements made by Acoustic Doppler Velocity Profilers (ADVP) or other instruments that produce essentially continuous velocity profiles of the flow field.

This part of IS0 9555 deals with the use of chemical tracers in discharge measurements by the dilution method. Apparatus and methods of general application are set out in IS0 9555-l and are not repeated here, with the exception of those relating specifically to chemical tracers. Chemical tracers have several advantages\ as follows.
a) As with fluorescent tracers, the handling of the tracer follows normal chemical laboratory practice, and no special equipment (e.g. radiation
shielding) is required. Care is still required, however, when handling concentrated tracer, to avoid contamination of samples and, with some
tracers, for reasons of chemical toxicity.
b) In general, chemical tracers are widely available commercially, and tnay be stored indefinitely.
c) Analysis may be possible using laboratory facilities currently used for water quality determination.
d) In general, chemical tracers are phofochemically stable.

This Technical Specification provides an understanding of the nature of measurement uncertainty and its significance in estimating the 'quality' of a measurement or a determination in hydrometry. It is applicable to flow measurements in natural and man-made channels. Rainfall measurements are not covered.

This International Standard specifies methods for determining the velocity and cross-sectional area of water flowing in open channels without ice cover, and for computing the discharge therefrom. It covers methods of employing current-meters or floats to measure the velocities. It should be noted that although, in some cases, these measurements are intended to determine the stage-discharge relation of a gauging station, this International Standard deals only with single measurements of the discharge; the continuous recording of discharges over a period of time is covered in ISO 1100-1 and ISO 1100-2.

TC - Replace Equation A.2 (E+F)

This standard deals with installations for the separation of light liquids (e.g. oil and petrol), i.e. those with a density up to 0.95 g/cm3 from waste water by means of gravity and/or coalescence. The standard is not primarily intended to apply to installations that are required to treat large quantities of trade effluent (e.g., oil refinery effluent). The standard may, however, still be appropriate for this purpose depending on local requirements.

This standard specifies definitions, nominal sizes, principles of design, performance requirements, marking, testing and quality control for grease separators.
This standard applies to separators for the separation of greases and oils of vegetable and animal origin from wastewater by means of gravity and without any external energy.
This standard does not cover grease separators intended to treat domestic wastewater from kitchen areas of single family dwellings, where the separator has a nominal size less than 1.
The standard is not applicable for the separation of light liquids, e.g. petrol, fuel and heating oil, and does not cover the treatment of wastewater exclusively containing stable emulsions of greases and oils.
The standard does not cover the use of biological means (bacteria and enzymes).

This standard specifies definitions, principles of sizing, installation, operation and maintenance of separator systems for light liquids in accordance with prEN 858-1:1997 as well as requirements and test methods for cleansing agents discharged with the waste water into the separator system. When pollution control requires the treatment of pollutants other than light liquids, additional measures shall be necessary.

This standard specifies requirements on selection of nominal sizes, installation, operation and maintenance of grease separators in accordance with prEN 1825-1:1998. This standard does not apply to waste water containing light liquids, e.g. grease or oils of mineral origin, and does not include treating stable emulsions of grease or oil in water. The standard does not cover the use of biological means (bacteria, enzymes for so-called "self-cleaning").

This standard deals with installations for the separation of light liquides (e.g. oil and petrol), i.e. those with a density up to 0.95 g/cm3 from waste water by means of gravity and/or coalescence. The standard is not primarily intended to apply to installations that are required to treat large quantities of trade effluent (e.g., oil refinery effluent). The standard may, however, still be appropriate for this purpose depending on local requirements.

Investigates cross-channel mixing characteristics of solutes injected in streams. Specifically, it relates to the use of tracers for the measurement of discharge. The purpose of the report is as follows: to compare methods of defining the degree of mixing; to compare methods of estimating the mixing length and to recommend a particular method; to investigate the errors in dilution measurements associated with incomplete mixing; to discuss methods of reducing errors in dilution-discharge measurements when mixing is incomplete.