In the production process of the papermaking industry, sludge treatment has always been a core problem restricting the green development of the industry. The traditional dewatering process is confronted with bottlenecks such as high moisture content, high treatment cost and large equipment wear and tear. However, the sludge efficiency enhancer, with its unique chemical modification technology, provides a breakthrough solution for the deep dewatering of papermaking sludge.
I. Characteristics of Papermaking Sludge and the Dilemma of Dewatering
Papermaking sludge is mainly composed of fibers, fillers, colloidal materials and microorganisms. Its colloidal structure is complex, and there is a strong binding force between water and solid particles. This characteristic leads to the fact that traditional mechanical dewatering equipment (such as plate and frame filter presses and belt filter presses) can only reduce the moisture content to 75%-80%, making it difficult to achieve deep dewatering. High moisture content sludge not only increases transportation costs but also restricts subsequent resource utilization - incineration requires additional fuel, composting is prone to breed pathogenic bacteria, and landfill occupies a large amount of land resources.
Ii. Technological Breakthroughs in Sludge Enhancers
Sludge enhancers achieve deep dewatering through the synergistic effect of multiple components:
Youdaoplaceholder0 Surface structure modification : Containing inorganic compounds, degreasing agents and other components, it can reduce the solid surface load and specific surface area of sludge, destroy the bacterial cell wall, and release bound water.
Youdaoplaceholder0 Charge neutralization effect : The sludge surface treatment agent can neutralize the surface charge of colloidal particles, reduce the repulsive force, and promote the aggregation of particles to form large-sized flocs.
Youdaoplaceholder0 Permeability optimization : The cell wall breaker can improve the pore structure of sludge and enhance the water migration channels. When used in conjunction with a plate and frame filter press, it can increase the pressure utilization rate of the filter chamber to over 90%.
Take the sludge enhancer as an example. When used in combination with a high-pressure diaphragm filter press, it can reduce the moisture content of sludge from over 90% to 40%-60%, increase the thickness of the sludge cake by 30%, and ensure uniform dryness both inside and out without the "runny core" phenomenon. After being applied by a large-scale papermaking enterprise, the annual sludge volume was reduced by 120,000 cubic meters, transportation costs were lowered by 45%, and the fuel consumption for incineration decreased by 60%.
Iii. Comparative Advantages of Enhancers over Traditional Pharmaceuticals
Youdaoplaceholder0 Treatment efficiency : The traditional lime conditioning method requires the addition of 20%-30% lime, while the dosage of the sludge enhancer is only 0.5%-2%, and there is no need to adjust the pH value. The actual measurement of a certain sewage treatment plant shows that the sludge enhancer increases the dewatering efficiency by 35% and shortens the pressing cycle by 40%.
Youdaoplaceholder0 Equipment protection : The formula free of chloride and calcium ions prevents equipment corrosion and extends the service life of the filter cloth by 2-3 times.
Youdaoplaceholder0 Environmental benefits : The calorific value of the treated sludge increases by 20%, making it more suitable for incineration for power generation; The leaching concentration of heavy metals has been reduced to below the environmental protection standard, meeting the resource utilization requirements for brick-making, roadbed materials, etc.
During the critical period of transformation and upgrading in the papermaking industry, sludge efficiency enhancers have addressed the pain points of traditional treatment processes. The comprehensive cost of sludge treatment can be reduced by more than 50%, providing a solid support for the sustainable development of the industry.