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Russian Application of Fully Automatic Filter Press in Landfill Leachate Treatment
Urban garbage is increasing at a rate of 10% per year. The huge amount of urban garbage has become a problem that plagues urban development and social and economic growth. Common methods for treating domestic garbage include incineration, composting, sanitary landfill, etc. Sanitary landfills have always been the main treatment method for urban garbage due to their mature technology and economic efficiency. However, sanitary landfills will produce a large amount of leachate, and the treatment of leachate is difficult to meet the standards. The high cost of treatment has always been widely discussed.
The application of a fully automatic filter press in the treatment of garbage leachate is very critical. Due to its high efficiency and degree of automation, this technology occupies an important position in the solid-liquid separation process. This article will introduce the application of a fully automatic filter press in garbage leachate treatment.
What is Landfill Leachate?
Urban garbage leachate is high-concentration organic wastewater, rich in many toxic and harmful substances, mainly including dissolved organic matter, inorganic salt components, heavy metals, and other pollutants with “three-cause” effects. Garbage leachate is different from general urban domestic wastewater. It has the characteristics of high pollution intensity and long duration, large fluctuations in water quality and water volume, high ammonia nitrogen content, imbalanced nutrient element ratios, and excessive metal ion content.
Therefore, garbage leachate will pollute surrounding water sources, including groundwater and surface water, causing serious excessive organic matter and heavy metals in surrounding water sources, and will also pollute the atmospheric environment. The accumulation of leachate is accompanied by stench, affecting the survival of surrounding humans, animals, and plants; it will also pollute the surrounding soil, and leachate will leak into soil pollution, resulting in excessive soil pollutants, etc.
Application Process of Fully Automatic Filter Press
Leachate pretreatment: Before entering the fully automatic filter press, the leachate usually needs to be pretreated to remove large particles and some soluble organic matter. Common pretreatment technologies include sedimentation, flotation, etc.
Filtering process: After pretreatment, the leachate is transported to the fully automatic filter press. Under high pressure, the leachate passes through the filter cloth, and the solid particles are captured on the filter cloth to form a filter cake, while the filtered liquid (filtrate) is discharged and enters further processing.
Unloading filter cake: The fully automatic filter press can automatically pull the plate to unload the filter cake. If necessary, it can also be equipped with a quick-open filter plate, which can pull open multiple filter plates at a time to unload the filter cake.
Filtrate discharge: The filtrate is discharged and collected from the outlet in an undercurrent manner.
Advantages of Fully Automatic Filter Press
- Fully automated operation: The monitoring is fully automated, from feeding, pressing, unloading, and conveying. The PLC programmable control mode is adopted to intelligently control the operation of the whole machine. The whole machine can be controlled automatically with one button through the touch control room platform, truly realizing automated industrial production.
- High pressure and low energy consumption: The system design adopts low-pressure feeding and gradually increases the squeezing pressure in stages, which overcomes the increase in filtration resistance caused by the decrease in moisture content of the filter cake itself, shortens the filtration cycle, reduces energy consumption, and improves work efficiency.
- Undercurrent without pollution: The system filtrate outflow design adopts an undercurrent mode, and the filtrate is discharged and collected in a centralized manner to reduce secondary pollution.
Conclusion
The application of a fully automatic filter press can significantly improve the treatment effect of landfill leachate, especially in solid-liquid separation. The use of filter press reduces the burden of subsequent treatment. In addition, due to the high degree of automation of operation, it can also improve the stability and continuity of treatment while reducing the risk of manual operation.
In short, the application of a fully automatic filter press in landfill leachate treatment not only effectively improves the treatment efficiency but also reduces the treatment cost and energy consumption, becoming an important equipment in the modern garbage treatment process.
