soil treatment plant Articles

  • Wastewater and groundwater

    Nearly 25 percent of the population in the United States—in more than 25 million homes—disposes of wastewater through onsite, or unsewered, systems that return treated effluent to the ground. This is an important public health issue because many of those same homes use wells that rely on groundwater for the drinking water supply. With ...

  • Bioremediation replaces “dig and dump” for treatment of pesticides in soil

    Historical usage of organochlorine pesticides (OCPs) such as DDT, toxaphene and dieldrin has resulted in long-term soil contamination, because these substances typically do not degrade naturally at significant rates, so sites are still impacted decades after the end of application. For example, DDT use in Canada ended over 30 years ago, but impacted soil remains at many sites. Such was the case ...


  • Soil Filters

    Soil filters (in german: Retentionsbodenfilter) are facilities for the removal of nutrients and/or pollutants; typically on the level of an industrial site, a quarter or a drainage system (sub-)catchment. Usually they are located at the discharge points to surface waterbodies to ensure water quality standards. Soil filters consist of two parts: The first part is a retention pond or basin for ...


    By IWA Publishing

  • Dallas eastside water treatment plant, Dallas, Texas

    In 1996, consulting engineers under con-tract to the City of Dallas contacted Soil Stabilization Products Company Inc. (SSPCo) to discuss solutions for chronic problems caused by more than a dozen sliding failures per year on the outer slopes of a water treatment facility's lagoon. The facility, administered by Dallas Water Utilities, consisted of a series of water retention lagoons enclosed ...


    By Presto Geosystems

  • Sludge characterization at Kadahokwa water treatment plant, Rwanda

    A study was carried out to characterize the sludge produced at Kadahokwa Water Treatment Plant (KWTP) in Butare to assess the effectiveness of the sludge treatment and potential impacts of sludge disposal on the environment. Parameters analyzed were chromium, nickel, cadmium, lead, copper, zinc, iron, manganese, aluminium, total nitrogen, total phosphorus, potassium and cation exchange capacity ...


    By IWA Publishing

  • Can chemical treatments to displace radioisotopes influence soil fertility? A laboratory trial

    Soils contaminated with radionuclide pose a long–term radiation hazard to human health through exposure via the food chain and other pathways. Remediation of contaminated soils has become increasingly important. The feasibility to move radionuclides from superficial soil layers to a deeper level using an acid leaching solution was already illustrated previously. As this chemical treatment may ...


    By Inderscience Publishers

  • Impact of fly–ash–amended soil on growth and yield of crop plants

    Fly Ash (FA), a waste product of thermal power stations, has great potential for use in agriculture, because it contains almost all macro as well as micronutrients. In view of the potential disposal problem of FA, this investigation was carried out to search an economical and eco–friendly solution of its disposal by using it as nutrient source in agriculture for growth of crop plants. FA ...


    By Inderscience Publishers

  • A soil quality index for reclaimed mine soils

    The quality of soils found in mines is low if they do not receive any reclamation treatment. To our knowledge, there are no still equations to evaluate the quality of metal contaminated mine soils after the application of the reclamation treatments mainly in use today (planting vegetation and amending with wastes). Therefore, the purposes of the present study was (i) to propose a method for ...


    By John Wiley & Sons, Ltd.

  • Bioaccumulation of triclosan and triclocarban in plants grown in soils amended with municipal dewatered biosolids

    Biosolids generally contain the microbiocidal agents triclosan (TCS) and triclocarban (TCC) that are persistent during wastewater treatment and sorp to organic material. The present study investigated the concentration of TCS in tissues of radish, carrot and soybean grown in potted soil amended with biosolids. Highest mean concentrations of TCS in radish, carrot and soybean root tissue midway ...


    By John Wiley & Sons, Ltd.

  • DEFERUM high iron removal water treatment plant equipment and technology

    DEFERUM is the ONLY technology available to remove HIGH iron (up to 80mg/L) and gas problems in water distribution, potable water and groundwater environments with very low operating costs. DEFERUM is also eco-friendly!Iron is one of the earth's most plentiful resources, making up at least five percent of the earth's crust. Rainfall seeping through the soil dissolves iron in the earth's surface ...

  • Biodegradation of PPCPs in wastewater treatment plants - a Danish case study

    The non-restricted production and use of pharmaceuticals and personal care products (PPCPs) has led to their presence in effluents from treatment plants, which can pose a threat to aquatic organisms downstream. This study analysed the breakdown of six common chemicals in four Danish treatment plants. The findings shed new light on the factors affecting removal of PPCPs from waste, showing that ...

  • Sensitivity analysis for the SimpleTreat model to simulate fate of chemicals in sewage treatment plants

    SimpleTreat 3.1 predicts the distribution and elimination of chemicals by sewage treatment. The model is used as the default calculation in EUSES 2.0 to estimate exposure concentration in the receiving water, soil and air. A sensitivity analysis was performed to rank input parameters according to their influence on model predictions. Triclosan was selected for the base case. The sewage flow, ...


    By IWA Publishing

  • A review of the detection, fate and effects of engineered nanomaterials in wastewater treatment plants

    Engineered nanomaterials (ENMs) are increasingly found in a wide range of products and processes, and consequently increasing loads are expected to reach wastewater treatment plants (WWTPs). To better assess the potential risk of ENMs to the environment via input through WWTP effluents, this review considers ENM detection methods, fate in WWTPs and potential effects on biota exposed to ...


    By IWA Publishing

  • Domestic wastewater treatment by a constructed wetland system planted with rice

    The experiments were conducted in four concrete laboratory scale free water surface constructed wetland units 1 m wide, 1.5 m long and 0.8 m deep. Paddy field soil was added to a depth of 0.4 m and rice seedlings (Oryza sativa L.) were transplanted into the units at a density of 25 plants/m2. Domestic wastewater collected from Chiang Mai University was applied into each unit via two different ...


    By IWA Publishing

  • Remediation of Explosives in Soil - Case Study

    Client: Department of the Army, U.S. Army Corps of Engineers Site: Ravenna Army Ammunition Plant (“AAP”), Ohio Task: In-situ Rapid Chemical Degradation of Munitions Constituents in Soil by MuniRem® Date: October 2009 Situation The test site is an inactive and ...


    By Planteco, Inc

  • Dynamic atmospheric chamber systems: applications to trace gas emissions from soil and plant uptake

    Atmospheric emissions, transport, transformation and deposition of trace gases may be simulated through chambers. The dynamic flow-through chamber system has been developed in response to a need to measure emissions of nitrogen, sulphur and carbon compounds for a variety of field applications. Oxides of nitrogen (NO, NO2, NOY) emissions have been measured from ...


    By Inderscience Publishers

  • Newport water treatment plant improvements - new membrane treatment facility case study

    City of Newport Newport, Oregon, USA HDR provided design and construction engineering services for a new water membrane filtration facility in Newport, Oregon. The plant's capacity was upgraded from 4 to 6 million gallons per day (MGD), expandable to 10 MGD. The new treatment system design includes an intake pump station, a pressurized flocculation system, membrane ...


  • Remediation of petroleum hydrocarbons in soil and groundwater

    Client: Power Generation Industry Location: Dagenham, London, England Services: Contaminated land site investigation, risk assessment and remediation services, due diligence    Summary: Our client was able to identify contamination arising from a tenant's activities, and obtain funds for remediation prior to ...

  • Impact of organic residues on soil microorganisms

    It is well known that organic residue amendments to soil give beneficial effects such as provision of plant nutrients, increased humus content and thereby increased water holding capacity, improved structure and increased cation exchange capacity. Organic wastes can be a valuable fertiliser in terms of phosphorous. Chemical precipitation in the sewage treatment plant makes sewage sludge rich in ...


    By ORBIT e.V.

  • Drinking water treatment residuals as an amendment to alkaline soils: Effects on the growth of corn and phosphorus extractability

    Abstract: Drinking water treatment residuals (alum) are waste products of water purification that have potential for environmental remediation as a soil amendment and a potential plant growth medium. In this study, the influence of added Drinking water treatment residuals on the extractability and availability of phosphorus to plants; determination of the agronomic rate of alum to different ...

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