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acidic wastewater effluent Applications

  • Waste water respirometry solutions for toxicity reduction tests

    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.

    By Strathkelvin Instruments Ltd. based in North Lanarkshire, UNITED KINGDOM.

  • Water treatment research for mining industry

    Securing a reliable supply of water for extraction, handling and transportation is vitally important to mining companies looking to expand their operations. These companies will go to great lengths to meet this need, running pipelines hundreds of miles long from desalination plants on the coast and treating wastewater that is conventional held in tailings ponds. Wastewater treatment technologies can recover saleable metal that might otherwise be lost and prevent environmental contamination from highly acidic effluent streams. Developing the infrastructure and technologies to meet these challenges in the mining industry is driving a market worth $11.9 billon.

    By Global Water Intelligence (GWI) based in Oxford, UNITED KINGDOM.

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