A leachate is any liquid that, in the course of passing through matter, extracts soluble or suspended solids, or any other component of the material through which it has passed. Leachate is a widely used term in the environmental sciences where it has the specific meaning of a liquid that has dissolved or entrained environmentally harmful substances that may then enter the environment. It is most commonly used in the context of land-filling of putrescible or industrial waste.
- Landfill leachate treatment is a challenge due to the high and variable concentrations of dissolved solids, organics, heavy metals and xenobiotic organics.
- To permit evaluators and landfill designers with a tool to rapidly evaluate and compare the performance of alternatives landfills designs.
- The primary criterion for design of the Leachate Treatment Plant Manufacturer is that all leachate be collected and removed from the landfill at a rate sufficient to prevent an unacceptable hydraulic head occurring at any point over the lining system.
A range of technologies are available for the treatment of landfill leachate, proven in many diverse cases. The following section introduces selected technologies that have predominantly been employed for landfill leachate treatment. The highlighted technologies are deployed both as stand-alone solutions and as part of a process combination. The composition of the landfill leachate plays a decisive role in selecting the appropriate technology.
The Leachate Treatment Plant Manufacturer requirements for leachate from landfills can vary, depending on the discharge requirements, and the contaminants present. By high TDS, high ammonia, high BOD and/or COD, heavy metals, and color Leachate from sanitary landfills is generally characterized. Discharge options include discharge to where no access to sewer is available, or publicly owned treatment works or discharge to ground or surface water. In the case of the latter, the requirements of Leachate Treatment Plant are much greater than when discharge to a POTW is available.
Due to the high and variable concentrations of dissolved solids, heavy metals, dissolved and colloidal organics and xenobiotic organics, Landfill Leachate Treatment is a major engineering challenge. Many different methods were in use to treat the landfill leachate. Most of these methods are adapted for wastewater treatment processing and have not yielded satisfactory results for Leachate Treatment Plant . Due to its varying characteristics and with high conductivity, leachate is hard to treat by Leachate Treatment Plant with biological treatment or chemical treatment.
Good Leachate Treatment Plant is essential for any leachate management system which features on site Leachate Treatment is to be successful, and the Leachate Treatment Plant itself cannot work successfully unless the Leachate Treatment Plant is capable of delivering the leachate to it reliably in the flows needed to prevent the build-up of leachate within the landfill cells.
The ability of the Leachate Treatment Plant to deal with variations in the flow and strength of the leachate is the first requirement to be considered when embarking on a Leachate Treatment Plant design. This means that a high level of integration is needed between the Leachate Treatment Plant design and the Leachate Treatment Plant Manufacturer.