Treatment of wastewater from service areas at motorways

Abstract

This paper deals with wastewater treatment systems placed in motorway service areas (MSAs). In the years 2008-2009 eight of such facilities installed on the stretch of the A2 motorway between Poznań and Nowy Tomyśl were examined and analyzed. The system consists of a septic tank, a submerged aerated biofi lter and an outfl ow fi lter. The volume of traffi c on the highway was analyzed, the amount of water use was measured and peak factors were calculated. On this basis it was concluded that the infl ows to the wastewater treatment systems in many cases exceeded the nominal design values.Based on the analysis of effl uent quality it was found that the effects of plant operation in large part did not meet the requirements. It was found that the bioreactor aeration system and the design of the suspension separator (outfl ow fi lter) should be modifi ed. One of the solutions was to use the soil-reed bed for wastewater treatment. The treatment of wastewater from the MSAs is a task that must take into account the unusual character of these facilities and the atypical quality of the effl uent.

Comparison of the Results from Microscopic Tests Concerning the Quality of Activated Sludge and Effluent

“…A frequent cause is the lack of appropriate measuring equipment, as well as the high variation in influent quality and quantity [11][12][13][14][15]. The pilot facility replicated the operation of a standard SWTP and was subjected to typical physicochemical measurements and less commonly performed microbiological tests, i.e., microscopic analysis.…”

Evaluation of Effectiveness of On-site Wastewater Treatment Systems Located at Roadside Rest Areas: Recognition and Diagnosis of Existing Problems in the Operation of Selected Facilities

“…An additional problem is implied by the limited possibilities for control, as local wastewater treatment systems along with environmental facilities are often leased to private entities or investors, which often makes it impossible to determine the scale of the problem. Another factor that hinders the operation of local treatment systems is the large variation in the amount of incoming wastewater in different seasons, so it is important to analyse both daily, weekly, and annual trends when designing and commissioning this type of investment [Makowska, Mazurkiewicz 2016]. This study identifies solutions used in local wastewater treatment plants established at roadside rest areas and evaluates their effectiveness in conducted field tests.…”