Sewage sludge sorption and desorption measurements were conducted for nine diverse contaminants of varying polarity: caffeine, sulfamethoxazole, carbamazepine, atrazine, estradiol, ethinylestradiol, diclofenac, and, for the first time desethylatrazine and norethindrone. Two types of sorption behaviour were observed. Compounds with a log octanol-water partition coefficient, log Kow, below 3 show...

and ROWE, ]. A. 1960. Sewage lagoons and mosquito problems. Proc. Symposium on Waste Stabilization Lagoons. U.S. Public Health Service, Kansas City, Mo. p. 101. EADS, R. B., and MENGIES, G. C. 1956. Texas mosquito problems from a species standpoint. Mosq. News i6(3):i87. MVKI.KBUST, R. ]., and HARMSTON, F. C. 1962. Mosquito production in stabilization ponds. Water [•’ollut. ConL Fed. ). 34(3):3...

A pot experiment was conducted to study the influence of various irrigation regimes on some metabolic pools of wheat and alfalfa plants. The photosynthetic pigments and soluble proteins of the tested plants significantly increased when irrigated with sewage amended with Scenedesmus quadricauda or Nostoc sp. On the other hand, soluble carbohydrates decreased in wheat shoots at different treatmen...

Microalgal blooms can result from anthropogenic nutrient loadings in coastal ecosystems. However, differentiating sources of nutrients remains a challenge. The response of phytoplankton and benthic microalgae (BMA) to nutrient loads was compared across tropical tidal creeks with and without secondary treated sewage. Primary productivity in the water column was limited by nitrogen availability i...

Known as "Simsar" in Nepal, wetlands are those areas which lie between the land and deepwater and remian waterlogged or submerged under water, seasonally or throughout the year. Generally the land is so muddy that one cannot easily walk over it, and water is so deep that one can neither swim nor get drowned. River floodplains, shallow margins of lakes and reservoirs, shallow and seasonal ponds,...

Once deposited in a lagoon sewage sludge in the form of a very thick liquid or cake is a difficult deposit to handle and most known methods to remediate or stabilise them are very costly or environmentally intrusive or both, EKG has the unique potential for dewatering sludge after it has been deposited in a tip or lagoon. The basic EKG concept is to combine electrokinetic phenomena with the est...

During the 1980s, the profile of recreational water quality at Sydney’s beaches caused concern among Sydneysiders. Monitoring of recreational water quality indicated that most Sydney beaches had poor water quality, and this condition was attributed to the disposal of partiallytreated sewage at cliff-face discharges. An epidemiological study conducted in 1989–1990 attempted to determine the prev...

Biochar may improve soil hydrology by altering soil porosity, density, hydraulic conductivity, and water-holding capacity. These properties are associated with the grain size distributions of both soil and biochar, and therefore may change as biochar weathers. Here we report how freeze-thaw (F-T) cycling impacts the grain size of pine, mesquite, miscanthus, and sewage waste biochars under two d...

l and drainage has been central to the development of North America since colonial times, with the first organized drainage efforts occurring as early as the 1600s (Evans et al. 1996). Drainage has been encouraged to improve public highways, reduce public health risks, promote increased crop yield and reduced yield variability, reduce surface runoff and erosion, and increase land value. Agricul...

OBJECTIVE To assess the pollution of water bodies by domestic sewage and to evaluate the basic sanitation conditions of residences and the knowledge of the local population concerning intestinal parasitic diseases and the hazards they present to public health. METHODS Thirteen water samples were collected from each of four sites in different water bodies of the Bairro da Serra region, in Ipor...