wastewater law Articles

  • A study on the migration and transformation law of nitrogen in urine in municipal wastewater transportation and treatment

    Many studies suggest that the total nitrogen (TN) in urine is around 9,000 mg/L and about 80% of nitrogen in municipal wastewater comes from urine, because nitrogen mainly occurs in the form of urea in fresh human urine. Based on this fact, the study on the migration and transformation law of nitrogen in urine and its influencing factors was carried out. It can be seen from the ...


    By IWA Publishing

  • The Caribbean’s Wastewater Problem

    Sewage released untreated into environment threatens islands’ health and natural beauty For decades, wastewater management has been a growing problem for the Wider Caribbean Region (WCR), a problem that regional governments have long understood as a threat to the economy, the environment, and to ...


    By Fluence Corporation

  • Understanding Residential Wastewater

    Urban areas are the biggest culprits when it comes to waste generation. Most of India’ ...

  • Electrocoagulation of synthetic dairy wastewater

    This study compares the effectiveness of pollutant removal from synthetic dairy wastewater electrocoagulated by means of aluminum and iron anodic dissolution. A method based on the cubic function (third degree polynomial) was proposed for electrocoagulant dosing. Mathematical methods for calculating the optimal electrocoagulant doses proved to be quite precise and useful for practical ...


    By IWA Publishing

  • Evaluating Henry's law constant of N-Nitrosodimethylamine (NDMA)

    N-Nitrosodimethylamine (NDMA), a potential carcinogen, may contaminate the groundwater when the reclaimed wastewater is used for irrigation and groundwater recharge. Henry's law constant is a critical parameter to assess the fate and transport of reclaimed wastewater-borne NDMA in the soil profile. We conducted a laboratory experiment in which the change of NDMA concentration in water exposed to ...


    By IWA Publishing

  • Current and Future Wastewater Reuse in Texas

    ABSTRACTThe reuse of treated wastewater effluent has served as a source of water supply in Texas for decades. While this has often occurred without detailed planning, the formal, planned reuse of treated wastewater effluent is increasing rapidly in the state, especially in the area around the Dallas-Fort Worth metroplex. To plan for the increased water demand, Texas has been divided into 16 ...

  • Sustainable wastewater management in developing countries: are constructed wetlands a feasible approach for wastewater reuse?

    Water shortage is a major problem in many developing countries and represents one of the key factors for their development. The quality of available resources has deteriorated owing to pollution by lack of wastewater treatment facilities and control mechanisms/laws. Therefore there is a great need to propose appropriate wastewater management in developing countries. This paper summarises ...


    By Inderscience Publishers

  • Case study - Wastewater from surface treatments

    The Client Our Client is a company with a certified quality production process, working at an International level since 1960. They produce seamless cold-drawn steel tubes according to EN 10305-1 and welded cold-drawn precision steel tubes according to EN 10305-2, for automotive, hydraulic and mechanical applications. The ...


    By EVALED-Evaporator

  • Flavour Industry Wastewater Management Case Study

    This study is carried out to propose an appropriate treatment technology for wastewater discharged from a flavor production factory. Industrial wastewater discharged from this factory ranges between 50–70 m3/d with an average value of 60 m3/d. The major source of pollution in this factory is due to cleaning of the vessels therefore the treatment has been carried out on the end-of pipe wastewater. ...


    By Springer

  • Significant new environmental laws in Saudi Arabia – many ME countries may follow suit

    Just published in EHS Journal, Sanaa Chakibi, Middle Eastern EHS Expert at Enhesa, summarizes significant new environmental laws issued by Saudi Arabia in 2012 and provides links to the legislation in English. Background Saudi Arabia has acted with urgency to develop a comprehensive framework for ...

  • PeCOD® Case Study: 15 Sewer Use By-Law Monitoring: Batch Release Tracing City of Austin, Texas

    Municipal wastewater treatment plants are designed to process a calculated range of organic loading in the raw influent. The calculation of this loading is based on characteristics of the plant’s region, such as population and industry type. Organic loading is most often quantified by the concentration of parameters such as Total Suspended Solids (TSS), Biochemical Oxygen Demand (BOD), ...


    By MANTECH Inc.

  • EU Nations amass fines for wastewater treatment shortcomings

    Wastewater Treatment Failures The European Commission’s Urban Wastewater Treatment Directive of 1991 says that cities in areas with particularly sensitive waters, including those with waterways feeding into the Danube River, shown, are required to use more stringent treatment. The European Court of Justice is starting to assess fines against European Commission member ...


    By Fluence Corporation

  • Wastewater Mining and Reuse: Creating Benign Future Scenarios

    Wastewater mining: In addition to being perhaps the most uninviting combination of words, it sounds like a most unlikely idea. But for almost 30 years, Aqueonics, now headquartered in Greenville, SC, has pioneered such systems, starting in the ’80s, with its first wastewater mining project. For that project, Aqueonics provided an onsite or decentralized treatment system for a developer in ...


    By Aqueonics, Inc.

  • Case study: How to purify Hexavalent Chrome Wastewater

    We all talk about priority pollutants, about hazardous substances and discharge to the atmosphere etc. which are dangerous for our environmental. Day by day we adopt new laws and regulations to protect our green future. So, what is that “priority pollutants”? Priority pollutants are highly toxic chemicals. The list of these chemicals is quite large and includes thousands of items but ...


    By GlobeCore GmbH

  • Investment and operating costs of municipal wastewater treatment plants in China

    The municipal wastewater treatment will continue to be intensified in China due to the economic development and the poor water quality. Within four years, the number of wastewater treatment plants has doubled. Before 2000, mostly plants without nitrogen and phosphorous removal were built. Since Chinese laws require strict effluent qualities, many plants were built with ...


    By Inderscience Publishers

  • Treatment of domestic wastewater with an anaerobic ceramic membrane bioreactor (AnCMBR)

    In this study, a ceramic membrane with a pore size of 80 nm was incorporated into an anaerobic membrane bioreactor for excellent stability and integrity. Chemical oxygen demand (COD) removal efficiencies by biodegradation reached 78.6 ± 6.0% with mixed liquor suspended solids (MLSS) of 12.8 ± 1.2 g/L. Even though the total methane generated was 0.3 ± 0.03 L/g CODutilized, around 67.4% of it ...


    By IWA Publishing

  • Act now to beat EU changes to wastewater treatment regulations

    Introduction Over the past few months, signals have been emanating from Brussels that hint at tighter wastewater treatment regulations. For instance, not only has Carlos Moedas, EU Commissioner for Research, Science and Innovation, recently been calling for better treatment systems for wastewater, but former Environment Minister, Janez Potočnik, has backed ...

  • The fate and behaviour of organic micropollutants during wastewater treatment processes: a review

    The fate and behaviour of selected insecticides, herbicides, and polychlorinated biphenyls during primary sedimentation and secondary biological treatment of waste water are evaluated. The physico-chemical properties (chemical structure, aqueous solubility, octanol/water partition coefficient and Henry's Law constant) of these compounds which dictate the extent and mechanism of their removal ...


    By Inderscience Publishers

  • Safety in Drinking Water? Monitoring for Radioactive ContaminantsOnly Required Every Three, Six, or Nine Years per Federal Law

    Current federal law requires testing of drinking water for radionuclides, “hazardous radioactive materials” every three, six, or nine years. The states have the option to increase testing frequency. [Federal Register Year 2000; page 76746. http://www.gpoaccess.gov/fr/retrieve.html] An incident of terrorism, accident, or improper disposal ...


    By Technical Associates

  • Car wash wastewater treatment and water reuse – a case study

    Recent features of a car wash wastewater reclamation system and results from a full-scale car wash wastewater treatment and recycling process are reported. This upcoming technology comprises a new flocculation–column flotation process, sand filtration, and a final chlorination. A water usage and savings audit (22 weeks) showed that almost 70% reclamation was possible, and fewer ...


    By IWA Publishing

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