Introduction to sludge, how sludge is produced

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.

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Sludge is a solid precipitate produced by water and sewage treatment processes.

Sludge is a product of sewage treatment and is an extremely complex heterogeneous body composed of organic residues, bacterial bacteria, inorganic particles, colloids, etc.

Because the microorganisms in the sludge are constantly consuming the envy of the nutrients in the wastewater. Among the organic matter consumed, part of the organic matter is oxidized to provide the energy required for the life activities of microorganisms, and the other part of the organic matter is used by microorganisms to synthesize new cytoplasm, so that microorganisms can reproduce and reproduce.

The main characteristics of sludge are high moisture content (up to 99% or more), high organic matter content, easy to decay and smell, and fine particles, small specific gravity, and gelatinous liquid. It is a thick substance between liquid and solid and can be transported by pump, but it is difficult to separate solids from liquid by sedimentation.

Sludge refers to the mixture of solid matter and microorganisms produced in the wastewater treatment process, and its main components are organic matter, inorganic salts and microorganisms. Sludge can be used in the following ways:1

Compression drying: After compression drying, the sludge can be made into solid sludge paste or granules for soil improvement, fertilizer production, etc. 2.

Pyrolysis treatment: The sludge is subjected to high-temperature pyrolysis treatment, and organic substances such as oil, gas and coke can be obtained for energy production. 3.

Anaerobic digestion: The sludge is put into an anaerobic digester for fermentation to produce swamp gas and organic fertilizer. 4.

Combustion treatment: The sludge is burned at high temperature to obtain energy and ash and other substances. 5.

Biotransformation: The use of microorganisms to biotransform sludge can be made into biofertilizers, enzymes and other products for use in agriculture and industry. 6.

Soil remediation: Using sludge as a soil amendment can improve soil fertility and water retention and promote plant growth. 7.

Building materials manufacturing: Mixing sludge with other raw molding materials can be made into bricks, wall panels and other building materials products. 8.

Sludge to landfill: Sludge is disposed of in landfills to reduce its volume and environmental impact. In short, sludge can be utilized in a variety of ways, which can achieve resource utilization and environmental benefits.

Summary. Hello, dear, glad to answer for you, sludge can be hand-composted or mechanically composted.

Hello, dear, glad to answer for you, sludge can be hand-composted or mechanically composted.

Hello, sludge lead can never be composted by hand or mechanically. Composted sludge is a good agent for soil improvement. However, the sludge with excessive heavy metal content should be disposed of carefully after dewatering, and it is generally necessary to landfill and seal it.

Summary. Hello dear, sludge can be hand-composted or mechanically composted. Composted sludge is a good soil amendment. However, the sludge with excessive heavy metal content should be carefully disposed of after dehydration, and it is generally necessary to landfill and seal it.

Hello dear, sludge can be hand-composted or mechanically composted. The composted sludge is a good soil amendment. However, for the sludge orange trap with excessive heavy metal content, it should be carefully disposed of after the dewatering place is vacant, and it is generally necessary to landfill and seal it.

Sludge treatment and final sludge disposal methods: mainly include thickening, digestion, dewatering, composting or domestic landfill. Concentration is either mechanical concentration or gravity concentration, and subsequent digestion is usually anaerobic medium-temperature digestion, that is, anaerobic technology.

The biogas produced by digestion can be used as energy for combustion or power generation, or for chemical products. The sludge produced by digestion is stable in nature and has fertilizer effect, and after dehydration, it reduces the accumulation of body base and hands into cake forming, and will also be conducive to transportation.