城市污水处理厂的污泥处置方案评价

城市污水处理厂的污泥是污水所产生的固态、半固态及液态废弃物。若处理、处置不当，会明显地影响污水处理厂的正常运行，同时又对环境造成严重污染。若有效地利用污泥中的营养成分及所含的生物能源，化害为利，将成为最好的选择。目前国内外较先进及成熟的污泥处理和处置方法有：土地利用、高温堆肥、热干化和焚烧等方法。无论采取何种处置方法，污泥产品都不应对环境造成二次污染。在介绍了几种处置方案后，认为只有在兼顾环境生态、社会和经济效益平衡的前提下，选择适合本地情况的最佳方案。污泥的最终出路是部分或全部资源化利用或以某种形式回到环境中去。

The Evaluation of Sludge Disposal Schemes in Civil Wastewater Treatment Plant

The sludge of waste treatment plant is solid, semi solid and liquid waste. If the sludge is not disposed suitably, it will influence the normal work of waste treatment plant and create severe pollution. By making full use of the nutrition and organisms energy of sludge, we can transform the harm into the good and this will be the best choice. At present, the advanced and reliable methods of sludge treatment include: Using as soil; Heaping dung in high temperature; Heating and drying. Incinerating, etc. No matter what happened, the sludge viceproducts should not make secondary pollution. Introducing the ways of sludge disposal, the most suitable scheme can be chosen after balancing the benefit of environment, society and economy. The ultimate ways of sludge should be resourcing or recycling harmlessly.