Open AccessMathematical Simulating of the Waste Water and Pollutants Spreading after their Discharge from a Bog
Author(s) -
С. А. Лавров
Publication year - 2018
Publication title -
vodnoe hozâjstvo rossii: problemy, tehnologii, upravlenie/vodnoe hozâjstvo rossii : problemy, tehnologii, upravlenie
Language(s) - English
Resource type - Journals
eISSN - 2686-8253
pISSN - 1999-4508
DOI - 10.35567/1999-4508-2018-2-5
Subject(s) - bog , peat , pollutant , environmental science , hydrology (agriculture) , environmental engineering , process (computing) , geology , geotechnical engineering , chemistry , ecology , computer science , organic chemistry , biology , operating system
This work’s significance is caused by the necessity of developing a method of digital assessment of the waste water discharge impact upon bogs with taking into consideration many-factor character of this process. A spatial 2D mathematical model taking into account hydro/physical and physical/chemical properties of the peat deposit and enabling to simulate various technological methods and the pollutants spreading process in case of waste water discharge to any bog areas has been proposed and implemented for the first time. A bog area located between the Zolotitsa and the Svetlaya rivers (Archangel Oblast) was a target of modeling. All main hydro/physical, hydro/chemical and geo/physical characteristics of it have been determined as a result of field investigation. Setting of edge and initial conditions, as well some model parameters was performed with GIS. A special information/modeling complex in MapInfo has been developed and implemented. It enables to imitate the waste water discharge process on a monitor screen. Digital assessments of hydrological, hydro/physical, hydro/chemical and sorption properties of bog areas, as well as geometry and discharge techniques’ impact upon the processes of pollutants spreading within the bog active layer have been carried out. It has been shown that the use of the peat deposit with 0.5 – 200 cm/s coefficient of filtration for purification of layers is capable of increasing the bog water-passage capability from 2 m3/hour to 720 m3/hour. In this case, however, duration of the bog purification ability decreases from 5 years to 1 month. The obtained results enable to assess actual consequences of the bogs use as an additional treatment facility and to take decisions on expedience of this action.