scholarly journals WASTEWATER EVAPORATOR POND ASSESSMENT OF «CASPI BITUM» LLP

REPORTS ◽  
2020 ◽  
Vol 6 (334) ◽  
pp. 88-95
Author(s):  
G.Zh. Kenzhetayev ◽  
◽  
S. Syrlybekkyzy ◽  
L.S. Taizhanova ◽  
◽  
...  
Keyword(s):  
Maximum Permissible Concentration ◽  
Petroleum Products ◽  
Total Iron ◽  
Evaporation Process ◽  
Surface Active Agents ◽  
Degree Of Oxidation ◽  
Surface Active ◽  
Harmful Substances ◽  
Anionic Surface ◽  
Sand Massif

The dynamics and level of pollution of the wastewater evaporator pond of the bitumen plant were studied in 2018-2019. The chemical composition of the waste water (WW) pond was determined by 8 indicators. The average annual indicators of the studied harmful substances in the water exceeded the permissible level from 1.1 to 21.9 times. At the same time, exceeding standards were registered for substances of 3 and 4 hazard classes: total iron - up to 2.8 times, petroleum products - up to 1.7 times. The content of anionic surface active agents (SAA) in the evaporator pond with an average degree of oxidation was recorded in excess of the maximum permissible concentration (MPC) by 2.0 times, 2.13 times, and 2.32 times on average over the years at points 1, 2, and 3, respectively. The average values of biochemical oxigen demand/chemical oxigen demand (BOD5/COD) for 2018-2019 were as follows for the studied points of the evaporator pond: at point 1 (water outlet) - 0.215, at point 2 (South-Eastern part) - 0.195, at point 3 in the area of the sand massif - 0.21, and under the condition of BOD5/COD<0.5 it means that the WW is over by resistant to oxidation compounds. This requires accelerating the evaporation process. A heliotechnical system of translucent coverings has been developed and offered for intensifying the evaporation process and isolating harmful substances from contacts with the biosphere. This system is environmentally and economically feasible.

Physicochemical and Biological Treatability Studies on Surfactant Wastewaters

1992 ◽  
Vol 26 (1-2) ◽  
pp. 377-386 ◽  
Author(s):  
F. Çeçen
Keyword(s):  
Activated Sludge ◽  
Suspended Solids ◽  
Heavy Duty ◽  
Surface Active Agents ◽  
Surface Active ◽  
Liquid Type ◽  
Experimental Findings ◽  
Biological Treatability ◽  
Anionic Surface

Laboratory-scale physicochemical and biological treatability studies were performed on wastewaters discharged from an industry producing household and heavy-duty detergents of powder and liquid type. The characterization of effluents led to the conclusion that the industry was highly pollutant in terms of BOD5, COD, surfactant, phosphorus, oil-grease, suspended solids and pH. By the use of lime in the precipitation stage about 80 % of COD and more than 90 % of phosphorus and anionic surface active agents could be removed. Following the treatment with lime the biodegradation of these wastewaters was investigated in continuously fed activated sludge units. The biokinetic constants of the reaction were determined as k = 0.76 d−1, Ks = 972 mg/l COD, a = 0.58 mg O2/mg COD, b = 0.044 mg O2/mg MLVSS.d. The experimental findings were used in the design of a full-scale treatment system.

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