Experience of all-season use of FOPS®-K filter to remove debris from the surface runoff of a residential area

Summary

In residential areas that are places of residence and various activities of the population, a significant amount of solid materials of various origin and dispersion is formed that can be defined as debris (or municipal sweepings for roads). While interacting with atmospheric precipitation, this debris enters public wastewater disposal systems disrupting their operation («Rules for cold water supply and wastewater disposal»). To solve this problem, experimental studies were carried out to estimate possible removing debris from surface runoff using a FOPS^®-K filter (basket type). The premises of the university campus was chosen as an experimental residential area where debris of biological, anthropogenic and technogenic origin accumulated. The results of testing FOPS^®-K filter for two cycles (each for 12 months) showed that using the filter provided for removing not only large debris but also a significant part of the sand (3/4 of the total dry matter) from the surface runoff up to the size except 0.04 mm. It was established that all components of the debris captured by the filter contained 3–66.3 g/kg of oil products. During the tests, the debris was regularly removed from FOPS^®-K filter (once every 3 months).

Key words

surface runoff , residential area , FOPS filter , debris removal

The experience of year-round operation of FOPS® filter in the purification of surface runoff from technologically disturbed resident areas

Summary

At present residential areas in big cities in particular, have been exposed to technogenic pollution related to heavy traffic, development of managed territories including areas close to big shopping and leisure centers and other crowded places. In order to improve the quality of life for the citizens and reduce the negative impact on the environment special attention shall be paid to the collection, removal and treatment of surface runoff from such territories. The purpose of testing FOPS^®-MU filter during four seasons (spring – summer – autumn –winter – spring) was the assessment of the efficiency and practicability of operating this equipment for surface runoff treatment. In the process of observations it was stated that the main source of the pollution of surface runoff from resident areas (suspended solids, oil products, iron, manganese) was automobile transport. Peak concentrations of some pollutants reached 150–400 maximum permissible concentrations set for the effluent discharged into the municipal sewer. Year-round continuous operation (for 13 months) of FOPS^®-MU filter showed high treatment efficiency in relation to different pollutants during the entire testing period without any loss of the operating capacity including after the negative temperature period. The high performance characteristics of FOPS^®-MU filter were also promoted by using FOPS^®-K filter-basket for collecting waste.

Key words

surface runoff , efficiency of treatment , residential area , sewer manhole , filter cartridge , filter-basket

Results of the test operation of FOPS^® filter for treatment of stormwater runoff from residential areas in St. Petersburg

Summary

In the process of designing facilities for the treatment of surface runoff from residential areas certain difficulties arise with determining the composition and actual concentrations of pollutants required for the calculations. The task of the work was testing the operation on-site of a filter cartridge for the purification of polluted surface runoff flowing into the storm sewer from the residential area during the spring-summer period. The results of the study of the composition of surface runoff from the residential area and possible treatment with the use of a filter cartridge (FOPS^®-MU) are presented. It is shown that highways contribute much to the pollution of the surface runoff from the residential areas. The main pollutants are suspended solids, oil products, iron and manganese. It is stated that the use of FOPS^® - MU filter provides for the high efficiency of the surface runoff treatment during the entire period (April – September) without any losses of the nominal capacity.

Key words

surface runoff , efficiency of treatment , residential area , sewer manhole , filter cartridge