walnut shell abrasive

Characteristics of walnut shell abrasive:
   Walnut shell abrasives are a new generation of abrasives that replace quartz sand abrasives, improve water quality and greatly reduce water treatment costs. Its compressive resistance is stronger. According to the data obtained from related tests, the average compressive limit of walnut shell particles with a particle size of 1.2-1.6mm is 0.2295KN (23.40kgf). Walnut shell particles with a particle size of 0.8-1.0mm have an average compressive limit of 0.165KN (16.84kgf). At the same time, the walnut shell abrasive has very stable chemical properties, does not contain toxic substances, and dissolves very little in acid, alkali, and water. The loss of walnut shell in hydrochloric acid solution is 4.99%, and the loss rate in sodium hydroxide solution is 3.8 %, will not cause deterioration of water quality.
The purpose of walnut shell abrasive:
Walnut shell as a filter material, on the one hand, has the ability of ordinary filter media to intercept suspended particles in wastewater; on the other hand, walnut shell filter media can rely on its unique surface physical and chemical properties to remove oil production wastewater through adhesion The medium emulsified oil particles are adsorbed on the surface of the filter material or the aggregates on the surface of the filter material to be removed.
Walnut shells can be used as an adsorbent and have been scientifically proven. However, the viscosity and surface tension of the oil adversely affect the adsorption rate of the walnut shell. At the same time, the recovery of oil from the walnut shell has a higher recovery rate than other water media, and it only needs to be compressed by force. Can be achieved. At the same time, walnut shell filter material is suitable for filtering well washing wastewater after pretreatment.