Aquatic Toxicity Monitoring Applications

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  • Category: Monitoring & Testing ×

  • Subcategory: Aquatic Toxicity Monitoring ×

Waste water respirometry solutions for toxicity reduction tests

by Strathkelvin Instruments Ltd.     based in Motherwell, UNITED KINGDOM

In industrial manufacturing companies, before a new process comes on-line, it is important to measure the toxicity of the effluent stream. This is especially the case for companies who treat their own waste. From the toxicity value (EC50) obtained, it may be a cost-effective solution to simply discharge the effluent to the treatment works at a slow and defined rate to minimise damage to the activated sludge. Following a period of acclimatisation it is often possible to increase feed rates to the plant and this can again be managed using the Strathtox Respirometer. An alternative approach is to undertake toxicity reduction procedures, such as neutralisation or acid hydrolysis, in pilot-scale laboratory studies. The Respiration or the Nitrification Inhibition Test may be used for this. In the future, toxicity reduction may be stipulated by local authority, water company or publicly-owned treatment works prior to giving discharge consents. Toxicity reduction may be evaluated using toxicity tests on activated sludge provided by the treatment works.

Pure drinking water solutions for day care & preschools

by Pure & Secure, LLC.     based in Lincoln, NEBRASKA (USA)

CHILDREN ARE ESPECIALLY SENSITIVE TO TOXINS IN WATER. Children are much more sensitive to chemicals in the water supply than adults. A child’s brain continues to grow after birth, and this development process is very sensitive to chemical interference. Research now suggests that a single small dose of a chemical on a critical day of development can cause permanent learning disorders*. Now you can show parents that your preschool is the market leader in protecting their children from toxins that could be present in your tap water. Our premium water distillers allow you to provide your children with fresh, distilled water, the safest drinking and cooking water available.

Waste water respirometry solutions for toxicity tracking

by Strathkelvin Instruments Ltd.     based in Motherwell, UNITED KINGDOM

If toxicity is identified in a mixed sewage entering a treatment works, the problem for the plant manager is to track and identify the source of the toxicity. This can be done by sampling the effluent stream at various points in its length. By working in a logical sequence back up the sewer network the number of samples can be minimised. This type of testing should be rigorously enforced for new product introduction by a waste producer, as well as sampling the effluents directly at source. The samples would be tested against the activated sludge of the receiving works, using the Respiration Inhibition Test or the Nitrification Inhibition Test.

Online Monitoring for the Drinking Water Industry

by AppliTek NV - Environmental Analysis Division     based in Nazareth, BELGIUM

AppliTek manufactures wet-chemical analyzers specifically designed for measuring on a continuous base the quality indices of drinking water, from raw water intake up to distribution level. Our systems have a small footprint, reduced reagent consumption and show excellent levels of detection in compliance with modern standards.

On top of that, the delivery of safe water throughout the water cycle will raise the need for efficient monitoring systems detecting in real-time contaminations. `Broadband toxicity`, a non-specific parameter defined by AppliTek, is a prodigiously new and clean technology for safeguarding drinking water.

Waste water treatment plants Screening area: stripping

by Chromatotec Group     based in Val de Virvée, FRANCE

Context & Challenges Globally, the wastewater treatment is the first public health issue. Urban development leads to urbanization near waste water treatment plant and extension of sewerage network. These aspects induce to an augmentation of sulfur compounds (H2S, mercaptans and sulfides) which are very corrosive, odorant and toxic. To monitor this compounds online CHROMATOTEC® offers high meteorological solutions. To ensure the safety of operatives in the screening building/area of waste water treatment works an H2S analyzer has been installed in the main building to complement the protection provided by individual monitors. Chromatographic measurements show that other sulfurous compounds including Methylmercaptans are present in the air in addition to H2S.

Concerned about PAHs in Parking Lot Sealcoats?

by Sitelab Corporation     based in West Newbury, MASSACHUSETTS (USA)

There is growing concern - and regulations in the works - over the use of sealcoating products due to their high PAH content.  In the United States and elsewhere, most sealcoats are made from coal tar which can be toxic to aquatic life and threaten public water supplies from rain and runoff. Sitelab can be used to quickly check the concentrations of polycyclic aromatic hydrocarbons and determine if it's made from coal tar or alternative petroleum based black top sealants.  Got samples?  We'll test them for free!  Contact Sitelab Corporation for details.

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