Sludge synergists: Mechanism of action, application fields and differences from conditioners
Definition and mechanism of sludge synergists
Sludge synergist is a chemical agent specially used to improve the dewatering performance of sludge, its core function is to destroy the colloidal structure of the sludge, reduce the viscosity of the sludge, improve the solid content, so as to release the bound water and improve the dehydration efficiency. The specific action mechanism includes:
Damage colloidal stability: By changing the charge distribution and hydrophobicity of the surface of the sludge particles, it is easier to aggregate and precipitate between the particles, reducing the free water content.
Reduce sludge viscosity: improve sludge fluidity and facilitate efficient dehydration in plate and frame filter press, belt filter press and other equipment.
Release intracellular water: destroy the cell structure of microorganisms and release intracellular water that is difficult to be removed by conventional dehydration.
Improve the efficiency of solid-liquid separation: Cooperate with the mechanical dewatering equipment to form a tight mud cake and shorten the dehydration cycle.
Two, application field
Sludge enhancer is widely used in high moisture content and difficult to dehydrate sludge scenarios, the main areas include:
Domestic sludge: sludge produced by municipal sewage treatment plants, the moisture content is usually more than 90%, and the synergist can help reduce it to less than 60%.
Industrial Sludge
Printing and dyeing, paper: treatment of sludge containing organic fiber, improve dehydration efficiency and reduce solid waste.
Electroplating, chemical, leather: dealing with complex composition sludge, improve dehydration performance.
Paper sludge reuse: as a sludge reuse agent, improve the paper yield and reduce production costs.
Three, the core difference with sludge conditioner
Iv. Technical Advantages and Economy
Dehydration efficiency improvement: data from a municipal project show that the sludge moisture content is reduced from 82% to 58% after the use of sludge enhancer, and the dehydration cycle is shortened by 50%.
Cost savings: The pharmaceutical cost is reduced by 30%-50% compared with the traditional conditioner, and the equipment maintenance cost (such as filter cloth replacement) is reduced by 60%.
Environmental benefits: Avoid the use of inorganic salts such as lime, reduce equipment corrosion and clogging of filter cloth, and reduce the COD and ammonia nitrogen residue of filtrate.
Five, the future trend
Customized development: According to the sludge characteristics of different industries (such as chemical sludge containing heavy metals), research and development of special synergist formulations.
Intelligent control: combined with online monitoring equipment, real-time adjustment of the dosage, optimize the dehydration effect.
Carbon neutral orientation: Developing biodegradable synergists to reduce life-cycle carbon emissions.
Conclusion: Through the synergistic effect of multiple mechanisms, sludge synergists show significant advantages in deep dehydration, cost control and environmental benefits, especially in the field of industrial sludge treatment has broad application prospects. With the technological iteration, it will become an important technical support for sludge treatment "reduction and resource utilization".