Hospital wastewater contains pathogenic agents and hazardous compounds; so, it will cause many risks on environmental and human health of different communities. The aim of this research was to investigate the efficiency of hospital wastewater treatment plant in north of Iran. This cross-sectional descriptive research was done on four hospital wastewater treatment plant in north of Iran during 2...

The textile dyeing and printing units in Sanganer town, Jaipur, Rajasthan, India. Discharge a huge volume of mostly untreated textile dye wastewater (10,000-15,000kl/day) into various pools and drain adjoining the textile printing units. A number of azo dyes are used in textile printing industries, As a result. The textile waste waters are loaded with them, along with other chemicals used durin...

This study evaluated the effectiveness of soils with different textures and thickness to treat BOD, N and P eluted from household septic effluent. The assessments were accomplished by leaching undisturbed soil monoliths of 30, 45 and 60 cm thickness and 25 cm in diameter, representing the four different textural groups and hydraulic loadings recommended by the Kentucky Health Department, with d...

Water quality monitoring is an important aspect of water management concerning to the pollution control. The removal of biodegradable organic substances is a very important aspect of evaluation the treatment efficiency in a wastewater treatment plant (WWTP). The amount of oxygen consumed by microorganisms to oxidise organic substances is characterised by biochemical oxygen demand (BOD), a widel...

In the monitoring of pollutants in an aquatic environment, it is important to preserve water quality safety. Among the available analysis methods, the microbial fuel cell (MFC) sensor has recently been used as a sustainable and on-line electrochemical microbial biosensor for biochemical oxygen demand (BOD) and toxicity, respectively. However, the effect of the background organic matter concentr...

The present work aimed to evaluate the osmotic conditioning and shading on the germination and on the initial growth of aroeira seedlings. The seeds were pre-imbibed in solutions with different concentrations of PEG (polyethylene glycol) and KNO3 and incubated at 10°C and 20°C temperatures, during 0 (control), 12 and 24 hours. After these periods, the seeds were dried until they reached the ini...

The dilution biochemical oxygen demand (BOD) test has widespread application for design and operation of wastewater treatment processes, evaluating the quality of natural waters, and assessing the effect of wastewater discharges on these waters. While standardization of the BOD-measuring method has become of prime importance in maintaining dependable data acquisition, changes are made as needed...

Palm oil processing operation is invariably accompanied by palm oil mill effluent (POME) considered to be an environmental pollutant. While anaerobic digestion and the present tertiary treatment technologies of POME are able to meet the current regulatory effluent discharge requirement of biological oxygen demand (BOD) 100 mg litre – the current limit set by the Department of Environment (DOE) ...

Various kinds of biosensors were developed for the environmental control. Microbial sensor consisting immobilized yeasts and oxygen probe has been applied to estimation of 5-day BOD. The response time of BOD sensor was less than 20 mm and the minimum measurable BOD was 3 mg l-. Amperometric microbial sensor for ammonia was constructed with immobilized nitrifying bacteria and an oxyger probe. Th...