Infiltracijos į nuotakyną tyrimai

Abstract

Darbe vertinta lietaus nuoteku ir gruntinio vandens itaka komunaliniu nuoteku debitui. Problema ta, kad infiltracinis vanduo, patekes i nuotakyna, didina tinklu apkrova, taip pat tam itaka daro ir neapmokestintas nuoteku kiekis. Tyrimai buvo atlikti naudojant mobiliaja nuoteku debito matavimo iranga, kuria buvo analizuojami dvieju pasirinktu tiriamuju objektu duomenys: senos ir naujos statybos nuoteku tinklai. Tiriamiesiems nuoteku tinklams itaka daro toje zonoje iškritusiu krituliu kiekis.

Infiltration water increases sewage system load but is not taxed. This paper evaluates rainfall and ground water infiltration influence on municipal runoff yield. The experiments were carried out using mobile wastewater flow measuring equipment, which was used to acquire flow data from two municipal sewage systems: an older construction Aukštakalnio micro district sewage system and a newer construction Sudeikiu town sewage system. The acquired data showed that with higher than 1.0 mm/h precipitation rate the municipal runoff yield in Aukštakalnio micro district started to increase, the highest registered 3.4 mm/h precipitation rate resulted in a flow increase from 14.8 m3/h to 22.4 m3/h. After twenty-four hours of heavy (13.9 mm/d) rain the runoff yield remained elevated (18– 19 m3/h) for the next two days. The average runoff yield on other days was around 13.6 m3/h.