Some animal waste ponds or lagoons have been found to be seriously over used.

Today, the site is overgrown, with many pits and waste ponds still evident.

Tar sands oil production has already created more than 50 square miles of toxic waste ponds so massive they are visible from space.

In the past, we assumed that the treatment of wastewater going into normal sewage plants and animal (dairy) waste ponds were the same.

He knew that waste pond liners can leak, seeping contaminated waste.

These tests together with routine periodic monitoring provided an extensive database to assist in managing waste pond decision-making.

Existing methods of separating oil from sand leave behind huge waste ponds of thick, caustic sludge.

A typical hog waste pond.

In November 2012, there was a major leak from the gypsum waste pond, which is contaminated with nickel, uranium and other toxic metals.

However, the oil sands are also a growing source of greenhouse gas, and vast waste ponds at mining projects are toxic to wildlife.

“They fly in and float around on the open waste ponds and act as a gateway to poison the wider area.”

It prevents over vegetation in streams and lakes, controls odours from waste ponds and precipitates heavy metals.

In 1985, the EPA fined the company $2.1 million for violations that included operating additional landfills and waste ponds without authorization.

Nelson Mandela's rally was laid out on the closest thing Sharpeville has to a recreation area - the grassy bank of an industrial waste pond.

In 2008, more than 1,600 ducks died after landing on a northern Alberta toxic waste pond that contained pollution generated in the oil sands separation process.

Then, they pass by an industrial waste pond of Rayonier just before crossing over the Altamaha River into Long County.

One of the results of this activity was a waste pond, which was contaminated with radioactive waste including strontium-90, caesium-137; tritium, and transuranics.

Balancing VOC reductions against waterway spills (via waste ponds/streams, etc.) requires further research.

David T. Hanson's aerial view of waste ponds looks like a second-generation Abstract Expressionist canvas painted in acid.

The dairy farmers here are already a beleaguered lot, coping with falling milk prices and environmental lawsuits over seepage from unlined waste ponds, among other serious problems.

On that job, the owner, Dow Chemical Plant in Fort Saskatchewan, had many waste ponds on the site.

By bringing together industrial and biological expertise, the collaborative project with United Water aims to make the design and operation of waste ponds a more exact science.

Such waste ponds may be used for regular disposal of pollutant materials or may be used as upset receivers for special pollution events.

Waste ponds often have pond liners, such as concrete or robust synthetic polymeric materials, to prevent infiltration of chemicals to soil or groundwater.

The United States Environmental Protection Agency reported that "Site operations resulted in the contamination of soils, ground water, and waste ponds on the property."

Often, chemical ponds themselves are addressed for cleanup action after their useful life is over or when a risk of groundwater contamination arises.

One example of a chemical pond is situated in the woods of Piscataway, New Jersey.

A waste pond or chemical pond is a small impounded water body used for the disposal of water pollutants, and sometimes utilized as a method of recycling or decomposing toxic substances.

Many of those who live nearby fear that a leak in the plastic liner of a chemical pond could drip into a watershed or that a truck spill could send carcinogens into a field of beef cattle.

In Amwell Township, your opinion of fracking tends to correspond with how much money you're making and with how close you live to the gas wells, chemical ponds, pipelines and compressor stations springing up in the area.

Senapathy published a book titled Independent Birth of Organisms in 1994, which proposes that all organisms on earth had originated independently from a chemical pond, thus rejecting common descent The book was a result of his 12 years research in molecular biology.

One resident in Amwell was riding her horse behind Range Resources' chemical pond for holding fracking flowback when she encountered "a hissing and bubbling sound in the stream" and a "red foamy oil slick" that caused the stream to exhibit "rainbow water".

Chemical pond treatments to maintain the 'ecological balance' in ponds are not always tested to assess their effects, although some may have beneficial effects (for example, adding chalk to a pond polluted by phosphorus could precipitate the nutrient from the water and prevent it from being taken up by algae).

The most common solution used for wastewater treatment in Kenya are waste stabilisation ponds.

Waste stabilisation ponds have been introduced since the late 1960s, due to the favourable tropical climate and the availability of natural wetlands.

A unique waste stabilisation pond in the grounds manages, conserves, re-uses and disposes of all water imports on site.

Activity budgets of waterfowl (Anatidae) on a waste stabilisation pond at the Western Treatment Plant, Victoria.

However, many waste stabilisation ponds systems are ineffective because of poor operation and maintenance, design and configuration mistakes and the mixing of municipal and industrial wastes.

Inmuong, Y., Waste stabilisation pond sewage treatment system: its appropriateness to a regional city of Thailand, The University of Tasmania, MEnvStds.

The opening of this new facility on schedule would not have been possible without the installation of a large waste stabilisation pond and reed-bed system designed to treat all the foul wastewater on site.

One of them is the Dandora Waste Stabilisation Pond System which treats the industrial and domestic sewage from the city of Nairobi and is the largest pond system in Africa.

David Sweeny, a PhD student in Environmental Health at Flinders, is attempting to model the flow in the vast waste stabilisation ponds of United Water's Bolivar Wastewater Treatment Plant, north of Adelaide.

It was found that the flowforms increased the DO concentrations in low (roughly 10 mg/L) and medium (roughly 100 mg/L) BOD effluents, thus confirming reports of their suitability for reducing waste stabilisation pond odour.

According to an article by a group of researchers from the Waste Stabilisation Ponds and Constructed Wetlands (WSP & CW) Research Group at the University of Dar es Salaam, stabilization ponds have been the most common technology for wastewater treatment in Tanzania.

The project will also upgrade and expand an existing waste stabilization pond treatment facility.

This research involves the development of an ecological model for anaerobic waste stabilization ponds.

Key words: waste stabilization ponds, nitrogen, rock filters, nitrification, denitrification.

This study analyzes samples taken from 15 separate locations inside a small waste stabilization pond system in New Zealand.

Determination of Cellosolve and Chlorex concentrations inhibitory to industrial waste stabilization pond treatment efficiencies.

Waste stabilization ponds (lagoons) currently serve the comparatively small populations of Whitehorse and Yellowknife.

Predicted temperatures were compared with measured temperatures as well as with the results of three other models previously developed for waste stabilization ponds.

Table A3-50 shows the percentage of wastewater treated aerobically (primary and secondary wastewater treatment) and anaerobically (waste stabilization ponds) for 1983–2004.

Many of the smaller wastewater treatment plants are waste stabilization ponds, a low-cost and low-energy treatment that eliminates pathogens while conserving nutrients.

Thorneloe, S.A. (1993), Methane emissions originating from the anaerobic waste stabilization ponds case study:

Measured as the distance from the periphery of the odour producing source structure (waste stabilization pond) and the nearest point of the property line of a sensitive land use."

In rural Ceará a villager is employed by the Residents' Association to maintain the sewers and the wastewater treatment plant (typically, a single facultative waste stabilization pond).

Therefore waste stabilization ponds (lagoons), storage bassins, constructed wetlands, rapid filtration or upflow anaerobic sludge blanket (UASB) reactors can be used.

A World Bank study carried out in Sana'a, Yemen, in 1983 makes a detailed economic comparison of waste stabilization ponds, aerated lagoons, oxidation ditches and trickling filters.

BONTOUX. / Seasonal variations in the forms of phosphorus in waste stabilization pond plant under arid climatic condition at Marrakech (Morocco).

Waste stabilization ponds (facultative lagoons) were assumed to be anaerobic, since they are primarily anaerobic systems with an aerobic top layer that reverts to anaerobic conditions during the night (Rich, 2005).

Water-borne sanitation of sewage disposal systems, including small-bore sewerage, conventional sewerage and septic tanks. Liquid waste treatment, including conventional treatment, waste stabilization ponds, resource recovery (biogas, aquaculture, composting).

International Water Association Biennial Conference, Berlin Sweaney, D.G., Cromar, N.J. and Fallowfield, H.J. (2001) The dynamic nature of environmental and hydraulic interactions in waste stabilization ponds - implications for treatment efficiency.

The most sensitive organisms were microbial populations in waste stabilization ponds, with approximately a 40% inhibition of respirometric activity (i.e., changes in total organic carbon, chemical oxygen demand and 2-ethoxyethanol concentration) at 1 000 000 µg/L in a 5-day study (Davis et al., 1989).

The MUD survey defines primary treatment as any form of mechanical sewage treatment, secondary treatment as biological sewage treatment or waste stabilization ponds, and tertiary treatment as some form of sewage treatment providing a higher level of treatment than secondary treatment.