How to determine the moisture in sludge? The forms of water in sludge include:

Gap water, free water in the gaps between particles, approximately70%It can be separated by gravity precipitation (concentration and compaction);

Capillary water is formed by the capillary phenomenon around highly dense small sludge particles20%Separation can be achieved by applying external forces such as centrifugal force and negative pressure to break the surface tension and cohesion of the capillary tube;

Surface adsorption of water and internal binding of water on particles, approximately10%Surface adsorbed water refers to the water attached to the surface of sludge particles, which has strong adhesion and often appears on solid surfaces such as colloidal particles and biological sludge. The coagulation method is used to remove the water on the attached surface through the mutual coagulation of colloidal particles; Internal bound water refers to the water that is bound within sludge particles, such as the internal water of cells in biological sludge and the crystalline water carried by metal compounds in inorganic sludge. It can be removed through biological separation or thermal methods.

The moisture content of sludge is particularly high! The performance requirements for testing instruments are quite strict, so it is obviously important to choose a sludge moisture analyzer (usually with a moisture content of85%When above, the sludge is in a flowing state;65%~85%It is in a plastic state at the time; below60%At that time, it is in a solid state. ）Sedimentation in still or slow-moving water environments, through physical means Unconsolidated soft fine-grained or very fine-grained soil formed by chemical and biochemical reactions. It belongs to modern and recent sediments. Mud can be composed of silt or clay according to particle size, with very few being fine sand or extremely fine sand. The clay minerals of coastal silt are mainly illite and montmorillonite, while freshwater silt is mainly illite and kaolinite. Mud contains a significant amount of（2～3%And many（10～12%The content of organic matter decreases with depth. The main characteristics of silt are: natural moisture content higher than liquid limit, and porosity ratio mostly greater than1.0Low dry density,only0.8～0.9Grams per cubic centimeter;Extremely high compressibility,Pressure from oneself9.8×10Pa increased to19.6×10Pa, the compression coefficient isa1-2>0.05The pressure comes from9.8×10Pa increased to29.4×10Paschal compression coefficienta1-3>0.1;Extremely low strength, often in a flowing state, considered as a weak foundation. Mud can be further divided into silt according to its porosity ratio (porosity ratio greater than) 1.5）And silty soil (with a porosity ratio of)1～1.5）. The natural structural changes of silt are very sensitive, and its structure and strength can automatically recover after being damaged by force, which is called thixotropy. Mud should not be used as a natural foundation because it can cause uneven settlement, leading to cracks, tilting, and affecting normal use of buildings. Artificial reinforcement measures must be taken when building on silt. If compacted and compacted, use vertical sand wells for drainage to accelerate the consolidation of silt. Sometimes column foundations can be used, or rigid ring beams and settlement joints that are suitable for uneven settlement can be used on the upper part of the building to ensure its stability and safety.

CSY-L3halogenRapid moisture analyzerIt can be widely applied to all industries that require rapid determination of moisture, such as pharmaceuticals, grains, feed, seeds, rapeseed, dehydrated vegetables, tobacco, chemical industry, tea, food, meat, as well as laboratory and production process requirements for moisture determination in industries such as textiles, agriculture and forestry, papermaking, rubber, plastics, textiles, etc; Simultaneously meet the determination of moisture content in solids, particles, powders, gels, and liquids.