1 / 21

OECD/Eurostat JQ Inland Waters

OECD/Eurostat JQ Inland Waters. Country presentation Lithuania Violeta Juozefaite. TABLE 4:. National population connected to waste water treatment plants. Table 4: data supplied before project. Data sources. Data used from: The Total Population Census, 2001 (SD)

monte
Télécharger la présentation

OECD/Eurostat JQ Inland Waters

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. OECD/Eurostat JQ Inland Waters Country presentation Lithuania Violeta Juozefaite

  2. TABLE 4: National population connected to waste water treatment plants

  3. Table 4: data supplied before project

  4. Data sources Data used from: • The Total Population Census, 2001 (SD) • Waste water database (EPA) Data wasn’t included from: • Regional Environmental Protection Departments • Municipalities

  5. The Total Population Census’2001 • Total population of Lithuania in 2001 – 3 487 000 • In 2003 total population decreased by ~ 41 000, i.e. less than 1% • Statistics includes data about ~1500 cities and settlements with population of > 200, this is~ 85% of tot. pop. • TPC’2001 Questionnaire includes question “Are you connected to a sewer?” • Storage tanks are included in WWCS

  6. Population density in Lithuania

  7. Waste water database • Database includes data on about 1069 WWTPs • From DB 327 WWTPs were selected which: • corresponds to JQ UWWTP and other WWTP, i.e. IWWTP definitions and • have data on influent and effluent about: TSS, BOD (at least) + COD, N , P. • No data about independent WWTP is supplied to DB.

  8. Settlements connected to WWCS

  9. Population excluded from WWT analysis • Rule: if settlement’s treatment plant could not be identified then this settlement is excluded, i.e. defined as not treated Data about population is excluded: • in settlements < 200 pop. of all pop. – 516 465 (14.8% ) • in settlements and towns which are connected to WWCS: • with < 1 000 pop. – 288 291 (8.3% of total pop.) • with 1 000 - 2 000 pop. – 36 352 (1.0% of total pop.) • with 2 000 - 10 000 pop. – 47 186 (1.4%of total pop.)

  10. Identification of WWT category • For identification of a WWT category JQ treatment plants classification was used • WWT category of a particular WWTP was identified according to requirements of UWWT Directive: • was applied principle “and” for treatment efficiency for all indicated parameters • treatment efficiency of Coliforms has not been taken into account

  11. Table 4 (interim results for 2003):

  12. Waste water treatment in Lithuania

  13. Problems (1) • TPC’2001 data does not indicate WWCS type, i.e. system of conduits, storage tanks or combined system. • There is no data about treatment on part of settlements which are connected to sewer. In case there is no data about WWTP in a settlement it’s impossible to indicate treatment category. Should this part of population be excluded from WWT, although they maybe are treated? • Proposals (draft) of the Commission:Storage tanks are no collecting systems in the terminology of the UWWT Directive.

  14. Problems (2) • There is no definition of individual treatment plant in Lithuania, so no data about independent treatment is available in Lithuania. • Incomplete data on influents. WWTPs usually supply all required data on effluents, but not so eagerly on influents.

  15. Conclusions • TPC’2001 data on population could not be used forever. So, more sophisticated methodology for assessment of population connected to WWT should be developed. • Data collecting system in waste water field should be changed to fill gaps of JQ and to fulfill reporting obligations to the Commission.

  16. TABLE 6: Sewage sludge production and disposal

  17. Task: Collection of information on sewage sludge production and disposal Activities: • Correction of existing order for collection of primary data. Done • Analysis of collected primary data. Done • Preparation of order for national statistical data collection. On the preparation

  18. Problems Collected primary data analysis has showed that: • Significant amount of WWTPs has not supplied data • Data supplied is not comprehensive • Majority of WWTPs has not provided data about sewage sludge amount in dry solids and m3 • Outcome - there is no possibilities to fill Table 6 of JQ for 2003

  19. Solutions • Data collecting problems on sewage sludge in Lithuania could be and will be solved by legal means only. • On July, 2004 will come into force package of new legal acts on statistical accounting of waste (in Lithuania sewage sludge is attributed to solid waste field): • The Permits for Activity • The Waste Treatment Rules • The Rules on Sewage Sludge Use

  20. The Waste Treatment Rules • EWC-Stat included • Waste recovery [R] and disposal [D] definitions corresponds to EU legislation and JQ • Mandatory primary data reporting for waste producers and treaters • We shall include sewer sludge reporting in dry solids and cubic meters

  21. The Rules on Sewage Sludge Use • Reporting forms on sewage sludge use will be improved to fulfil reporting obligations (93/481/EC and 94/741/EC) to the Commission

More Related