Paper sludge is a kind of biological solid castoff, which contains a lot of plant nutrients, such as cellulose organic matter, nitrogen, phosphorus, potassium, etc., and it also contains trace amounts of heavy metals and pathogenic bacteria.Paper sludge has large ash content and high water content, and it can be divided into biological sludge, alkali-rich white mud and deinking sludge.
China ZJN Environmental Protection Equipment Technology Co., Ltd. is a national high-tech enterprise. The company is committed to environment protection, energy saving, efficiency and practicality. It specializes in tailoring rotary drum dryers for enterprises. Over the years, our company has continuously researched and developed innovative drying technologies. It holds more than 100 independent intellectual property rights, technical achievements and know-hows. At present, it’s creating a true energy-saving exclusive brand. The paper sludge rotary drum dryer produced by the company has adopted the latest drying process to dry sludge in papermaking process and reduce pollution to the environment.It improves utilization of resources, energy, castoff in the production process, and its recycling of water in the production process helps maintain a virtuous circle of ecology and sustainable utilization of resources, etc., providing scientific and technological support for economic construction.
Paper sludge resource treatment
1. Incineration power generation
After the paper sludge is dried, it can be treated by incineration, which can collect heat energy to generate electricity without generating waste gas or waste residue.
2.Agricultural use
Paper sludge is rich in organic matter and total nitrogen, which can be widely used in crops, horticultural flowers, lawns and municipal greening.
3. Improve the soil
The paper sludge has a pH of 7.2 and can be used to improve acidic soils and adjust the soil acidity to a suitable pH range.
4.The production of activated carbon, ceramsite, artificial zeolite
The papermaking sludge has a high content of cellulose, a rough surface, and a large surface and a low price. It helps sludge disposal by turning trash into treasure, thereby realizing urban sludge reduction and resource reuse.Therefore, it will have considerable social, environmental and economic benefits.
5. new wall materials
Paper sludge and clay are mixed into a new type of wall material (brick) by a certain proportion of mixing.
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