What is the difference between aerobic sludge particles and activated sludge

A variety of chemicals can be used for sludge deep dewatering, and the following are the most common chemicals used for ordinary sludge dewatering:

Cationic polyacrylamide: This is a polymer flocculant, which can flocculate small particles in sludge into larger particles through adsorption and bridging, and improve the sedimentation performance and dewatering performance of sludge.

Polyaluminum chloride: This is an inorganic polymer coagulant, which can coagulate with impurities in the sludge to form an insoluble precipitate, so that the water in the sludge is separated.

Lime: Lime can neutralize with the acids in the sludge, adjust the pH value of the sludge, and promote the cohesion and settlement of the sludge.

Diatomaceous earth: Diatomaceous earth has the characteristics of porosity and high specific surface area, which can be used as a filter aid to improve the filtration performance and dewatering performance of sludge.

It should be noted that different kinds of agents are suitable for different sludge properties and treatment requirements, so it is necessary to choose the appropriate agent according to the specific situation in practical applications. For sludge with high organic matter, under the condition that lime is not allowed to be added in the process, it is necessary to customize the organic deep sludge dewatering agent, and adjust the corresponding process parameters to ensure the sludge treatment effect.

Aerobic sludge particles, with aerobic bacteria on the outside and facultative bacteria on the inside. Activated sludge, dispersed aerobic bacteria.

Aerobic sludge particles, with aerobic bacteria on the outside and facultative bacteria on the inside. Activated sludge, dispersed aerobic bacteria.

1. Biological particles should refer to activated sludge (microbial colloid), as for the principle of clumping (brief description): the joint action of bacterial secretions, bacterial surfaces, protozoan adsorption, etc.

2. Granular sludge should be a sludge mass of suspended solids composed of flocculants in sewage, and its principle is that alum can ionize two metal ions in water: kal(SO4)2 = K+ +Al3+ +2SO42- and Al3+ is easily hydrolyzed to generate colloidal aluminum hydroxide AL(OH)3: AL3+ +3H2O = AL(OH)3(colloid) + 3H+ The adsorption capacity of aluminum hydroxide colloidal is very strong, which can adsorb the impurities suspended in the water, and form a precipitate to make the water clear.

Therefore, alum is a better water purification agent. Of course, it may also be other flocculants, and the principles are also different. However, some flocculants are harmful to organisms and cannot be used prior to biological treatment.

3. From the above analysis, it can be seen that one is mainly a biological flocculant, and the other is a pharmaceutical flocculant with an essential difference. Similarities and differences are the principles of their grouping.

Bioparticles should be more focused on carriers, and multiple organisms should be grown on the carrier, and the purpose of particles is to increase biomass;

Aerobic granular sludge is formed by the convergence of a variety of organisms that focus on their own growth and cultivation, which is related to the upwelling velocity.

There is not such a big difference in appearance, I personally understand!