Degradation of nonylphenol ethoxylates during the composting of sludges from wool scour effluents

Article Abstract:

Investigation into the composting of wool scour sludge containing nonylphenol ethoxylate (NPE) from the scouring process showed that 98% of the NPE and NPE residues were almost gone by the 14th week of composting. The degradation of NPE in the composting process is believed to follow the oxidative hydrolytic shortening of the poly(ethylene oxide) chain of the hydrophile, resulting in low levels of NPE degradation intermediates.

Waste Management and Remediation Services, Industrial Water Pollution, Surface active agents, Industrial wastes, Woolen and worsted manufacture, Wool fabric manufacture

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Corrosion in drinking water distribution systems: a major contributor of copper and lead to wastewaters and effluents

Article Abstract:

The corrosion of water supply systems may contribute to most of the copper and lead in wastewater effluents. In fact, such corrosion may be the primary reason why for some supply systems, the wastewater effluent contains copper concentrations that exceed minimum safety standards. Any attempt to reduce the corrosion in water supply systems should also consider the impact on the wastewater.

Water pollution, Corrosion and anti-corrosives, Corrosion, Waterworks

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Irrigation with sewage effluents: the Israeli experience

Article Abstract:

Sewage effluent is widely used for irrigation in Israel. However, greater control over nutrient levels would be beneficial. Research is needed into the pollutant effects of additional nutrients in the groundwater. Sewage may also contain industrial organic materials and salts. Heavy metals in the effluent may contaminate the food chain and the spread of pathogens encouraged.

Israel, Waste management, Sewage irrigation

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