New industrial dissolved oxygen monitor aids treatment of sewage and industrial wastes

1974 ◽  
Vol 2 (4) ◽  
pp. 412-413
Keyword(s):  
Dissolved Oxygen ◽  
Industrial Wastes ◽  
Oxygen Monitor

scholarly journals Water Quality Parameters: A Case Study of Karnafully River Chittagong, Bangladesh

1970 ◽  
Vol 45 (2) ◽  
pp. 177-181 ◽  
Author(s):  
M Iqbal Sarwar ◽  
Ahmad Kamruzzaman Majumder ◽  
M Nurul Islam
Keyword(s):  
Dissolved Oxygen ◽  
Chemical Oxygen Demand ◽  
Winter Season ◽  
Oxygen Demand ◽  
Agricultural Runoff ◽  
Industrial Wastes ◽  
Toxic Waste ◽  
Total Alkalinity ◽  
Physiochemical Parameters ◽  
Pharmaceutical Industries

The river Karnafully is one of the Himalayan River originating from the Lushai Hills in India. The catchments of the Karnafully and its allied streams cover 5,500 (14,000 sq km) square miles. Water samples were collected from Karnafully River along different points and analyzed for various physiochemical parameters during winter. Effects of industrial wastes, municipality sewage and agricultural runoff on the river water were investigated. The study was conducted between the Kaloorghat Bridge and Patenga estuary including Chittagong port. This is the most polluted area due to the presence of many chemical fertilizers, iron, leather and pharmaceutical industries. All these industries discharge their untreated toxic waste water directly into the river Karnafully. The study involved determination of physical and chemical parameters of surface water at different points. The mean values of water temperature, total suspended solids (TSS), total dissolved solids (TDS), total solids (TS), turbidity, dissolved oxygen (DO), bio-chemical oxygen demand (BOD), chemical oxygen demand (COD), pH, electric conductivity and total alkalinity were 23°C, 365.87 mg/L, 8018.8, 8518.33 mg/L, 31.54 FTU, 1.55 mg/L, 6.65 mg/L, 13961 μs/cm, 247.47 mg/L, 560.27 mg/L and 4.8 mg/L respectively. Key words: Physiochemical parameters; Winter season; Monsoon season; Dissolved oxygen; Biological oxygen demand. DOI: 10.3329/bjsir.v45i2.5722Bangladesh J. Sci. Ind. Res. 45(2), 177-181, 2010

Water quality of the estuary and Firth of Forth, Scotland

1987 ◽  
Vol 93 (3-4) ◽  
pp. 303-314
Author(s):  
A. H. Griffiths
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Industrial Wastes ◽  
Direct Result ◽  
Receiving Waters ◽  
Firth Of Forth ◽  
Effluent Waste

SynopsisThe major sources of domestic and industrial wastes being discharged into the estuary and firth are described and quantified. The effects of these inputs on the quality of the receiving waters, in terms of their dissolved oxygen and micronutrient levels, are discussed.In the estuary, nitrate is shown to behave in an essentially conservative manner in the winter months; the ammonia distribution exhibits summer maxima as a direct result of the effluent waste inputs; the orthophosphate distribution is characterised by considerable losses in the upper reaches. The data on lateral distributions of micronutrients show marked gradients.In the firth the significant improvements in waters off the Edinburgh coastline are described. The influence of the existing major discharges on water quality is shown occasionally to extend to the eastern limit of the firth for ammonia and orthophosphate.

Preliminary results of the optimization of biogas production at the biogas station of the national research institute of animal production in Grodziec Sląski – Kostkowice

2015 ◽  
Vol 2 (3) ◽  
pp. 26-31
Author(s):  
K. Węglarzy ◽  
Yu. Shliva ◽  
B. Matros ◽  
G. Sych
Keyword(s):  
Agricultural Production ◽  
Crude Protein ◽  
Biogas Production ◽  
Electric Energy ◽  
Corn Silage ◽  
Industrial Wastes ◽  
Organic Mass ◽  
National Research Institute ◽  
Digestion Process ◽  
By Products

Aim. To optimize the methane digestion process while using different recipes of substrate components of ag- ricultural origin. Methods. The chemical composition of separate components of the substrate of agricultural by-products, industrial wastes, fats of the agrorefi nery and corn silage was studied. Dry (organic) mass, crude protein (fat) fi ber, loose ash, nitrogen-free exhaust were estimated in the components and the productivity of biogas was determined along with the methane content. These data were used as a basis for daily recipes of the substrate and the analysis of biogas production at the biogas station in Kostkowice. Results. The application of by-products of agricultural production solves the problem of their storage on boards and in open containers, which reduces investment costs, related to the installation of units for their storage. Conclusions. The return on investment for obtaining electric energy out of agricultural biogas depends considerably on the kind of the substrate used and on technological and market conditions.

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