Treated wastewater discharged from more than 400 onsite wastewater treatment systems (OWTS) near the Civic Center area of Malibu, California, 40 km west of downtown Los Angeles, composes 28% of the recharge to a 3.4 km(2) alluvial aquifer. On the basis of δ(18) O and δD data, the fraction of wastewater in some samples was >70%. Ammonium and nitrate concentrations in water from 15 water-table we...

Four-year-old Norway spruce (Picea abies L. (Karst.)) seedlings were exposed to ambient and elevated (1.5 x ambient in 1997 and 1.6 x ambient in 1998) ozone concentrations [O3] and three nitrogen (N) and two phosphorus (P) availabilities: "optimal" values (control); 70% of the control N and P values (LN and LP); and 150% of the control N value (HN). Treatments were applied in an open-field ozon...

With increasing concern for the pollution potential of farm wastes, there is a corresponding need for rapid and robust methods of analysis for animal manures. In order to study the rapid testing methods based on the relationship between nutrient concentrations and physicochemical properties, diverse samples (n=105) were used in this study. The results indicated strong linear relations between s...

Salt marshes are valuable ecosystems, as they provide food, shelter, and important nursery areas for fish macroinvertebrates, a wide variety of ecosystem services human populations. These heavily rely on the floristic composition salt with different species conferring service values adaptation resilience capacities towards stressors. Blue carbon, nitrogen, phosphorous stocks no exception to thi...

The data in this article mainly present the sequences of activated sludge from a full-scale municipal wastewater treatment plant (WWTP) carrying out simultaneous nitrogen and phosphorous removal in Beijing, China. Data include the operational conditions and performance, dominant microbes and taxonomic analysis in this WWTP, and function annotation results based on SEED, Clusters of Orthologous ...

In China, with the rapid urbanization and industrialization, and highly accelerated economic development have resulted in degradation of water resource. The water quality deterioration usual result from eutrophication in most cases, so how to dispose this type pollution water higher efficiently is an urgent task. Hower, different with traditional technology, constructed wetlands are effective t...

“Everything is everywhere, but the environment selects the best duo’’; natural selection holds the key to the relationship between the micro-algal communities in Lake Mälaren and the activated sludge organisms in the municipal wastewater of Västerås. Interest in microalgae-based activated sludge wastewater treatment has been increasing in recent decades as a way to meet the demand for sustainab...

Cultivation of some top vegetables was made by irrigation with distillery spent wash of different proportions. The spent wash i.e., primary treated spent wash (PTSW), 50% and 33% spent wash were analyzed for its plant nutrients such as nitrogen, phosphorous, potassium and other physical and chemical parameters. Experimental soil was tested for its chemical and physical parameters. Top vegetable...

BACKGROUND Simultaneous nitrogen, phosphorous and COD removal in a pilot-scale enhanced Sequencing Batch Reactor (eSBR) was investigated. METHODS The reactor consisted of a pre-anoxic zone and internal recycle and was fed with synthetic wastewater. The study was performed by operating the reactor in 6-hour cycles in three different operational modes during a time frame of 279 days. RESULTS ...