Preparation method of sludge coupling conditioner and conditioning method thereof

Abstract

The invention discloses a preparation method of a sludge coupling conditioner and a conditioning method thereof. The preparation method comprises the following steps: firstly, adding polyacrylamide, gum, limestone and sodium salt; heating and dehydrating through a heating device, cooling to the normal temperature, weighing and proportioning according to the proportion of the components, adding into a grinding stirrer, and grinding, mixing and stirring through the grinding stirrer. The invention relates to the technical field of city environment protection. Powdery raw materials are heated, dehydrated, ground, and mixed; the production and processing are simple, the raw materials are environmentally friendly and non-pollutant; the powdery material mixing efficiency is high; the conditioningefficiency is high; meanwhile, the proportion of internal calcium limestone is small; the internal calcium limestone can be fully neutralized with internal substances of city internal sludge; calciumsedimentation is reduced; the fault of a dehydration machine and pipeline blockage in the later stage are prevented, the dehydration efficiency is guaranteed, and the service life of the dehydrationmachine and the pipeline is prolonged.

Description

technical field [0001] The invention relates to the technical field of urban environmental protection, in particular to a preparation method of a sludge coupling conditioner and a conditioning method thereof. Background technique [0002] The water in sludge can be divided into four types according to its state: (1) interstitial water or free water, interstitial water is the free water existing in the gap between sludge particles, generally accounting for about 70% of the total water content of sludge; ( 2) Capillary water, capillary water is the water combined with sludge particles due to capillary action between sludge particles or in particle cracks, accounting for about 20% of the total water; (3) Adsorbed water, which is due to surface tension The water adsorbed on the surface of sludge particles has a strong surface adsorption force due to the small size of sludge particles; (4) bound water or cell water, bound water is the water contained in microbial cells in sludge,...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a method for preparing a sludge coupling conditioner and a conditioning method thereof, which solves the problem that the commonly used conditioner is mainly quicklime or modified quicklime mixed with a small amount of iron salt, Aluminum salt, polyacrylamide, but the dosage is large, the cost is high, the dry weight of sludge is increased, and the product after the reaction of quicklime and water is easy to settle, and the operation of a large amount of calcium may easily cause dehydration mechanical failure and pipeline blockage in the later stage. Iron salt 1. The aluminum salt agent is corrosive, which affects the life of machinery and pipelines. At the same time, the quenched and tempered products and raw materials are easy to pollute the environment and have poor environmental protection.