The water content of sludge is too high, how can it be effectively dewatered

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.

The water content of the sludge is too high, and there are many ways.

The most direct way is to replace the sludge dewatering agent with a plate and frame filter press.

Plate and frame filter press is a kind of efficient dehydration equipment to realize the separation of solid and liquid in industrial production, with simple structure, easy operation, stable operation and convenient maintenance. The filtration area is flexible and occupies a small area. It has strong adaptability to materials and is suitable for various occasions of small and medium-sized sludge dewatering.

It is used in sand washing, chemical, ceramic, petroleum, pharmaceutical, food, smelting and other industries. It is also suitable for industrial filtration sewage treatment.

The sludge dewatering machine for municipal sewage has a high moisture content (over 80) and a large consumption of chemicals.

Dear, hello, the sludge dewatering machine for municipal sewage has a high moisture content (over 80), and the reason for the large consumption is generally the problem of the filter press. It is recommended that you change the filter press, the belt filter press is recommended for large processing capacity, and the plate and frame filter press is used for small processing capacity. The choice of the agent should be correct, and cationic polyacrylamide is generally used for this kind of sewage.

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The sludge dewatering machine for municipal sewage has a high moisture content (over 80) and a large consumption of chemicals.

Hello dear and happy to answer for you. The sludge dewatering machine for municipal sewage has a high water content (over 80) and a large amount of chemical consumption due to the following reasons: 1. The feed particle size is uneven, and after the flotation refined coal enters the refined coal pool, the coarse particles are easy to settle, resulting in a large deviation of each package of water, and the water content of the flotation refined coal is not only unqualified, but also unstable.

2. Pressing and blowing can not be carried out at the same time, the loosening of the filter cake is poor, and when the pressing time reaches a certain level, prolonging the pressing time has little impact on the water content. 3. Only a layer of coarse-grained permeable layer can be formed in the middle of the filter cake for one-time feeding. The total thickness of the filter cake is thick, the water permeability is poor, and the water content of flotation refined coal is high.

The above is all the answers of the answer, I hope it can help you, and I wish you a happy life

The sludge dewatering machine for municipal sewage has a high moisture content (over 80) and a large consumption of chemicals.

Hello Kiss is happy to answer this question for you. 1. The sludge is complex, the organic matter content is extremely high, and the sludge particles are too hydrophilic 2. The sludge conditioning is not very successful, and the sludge is not tempered according to the quality of the sludge itself, which destroys the hydrophilicity of the sludge 3. The pressure of the sludge dewatering equipment is too low, and the degree of sludge extrusion is not enough, which is also the main reason. For example, the sludge moisture content after the treatment of ordinary plate and frame filter press, belt filter press and chamber filter press is relatively high, and the moisture content of the sludge treated by the diaphragm filter press with the secondary pressing function is slightly lower, and the new ultra-high pressure sludge filter press of Zhengzhou Dingsheng has the lowest moisture content and the most thorough dewatering of the sludge due to its squeezing force 4-6 times higher than that of the ordinary sludge filter press.

Crucible oven method, test the weight comparison of the absolute dry sludge.

(Sludge weight before dewatering - Sludge weight after dewatering) Sludge weight before dewatering Multiply by 100%.

Sludge dewatering rate calculation

Sludge before dewatering.

DAO weight - post-dewatering sludge weight version) Sludge weight before dewatering is multiplied by 100%.

Sludge dewatering: A sludge treatment method that removes water from the fluidized primary, concentrated or digested sludge and converts it into semi-solid or solid sludge blocks. After dewatering, the moisture content of the sludge can be reduced to 55 to 80 percent, depending on the nature of the sludge and sediment and the efficiency of the dewatering equipment. Further dewatering of the sludge is called sludge drying, and the moisture content of the dried sludge is less than 10%.

The main methods of dehydration are natural drying method, mechanical dehydration method and granulation method. Natural drying and mechanical dewatering are suitable for sewage sludge. The granulation method is suitable for coagulation and sedimentation sludge.

The weight before dehydration minus the hungry weight after dehydration is the yield rate.