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CN-122010329-A - Water treatment process for cleaned deep groove ball retainer

CN122010329ACN 122010329 ACN122010329 ACN 122010329ACN-122010329-A

Abstract

The application discloses a water treatment process for a clean deep groove ball retainer, and belongs to the technical field of sewage treatment. The method comprises the steps of filtering sewage generated after cleaning for the first time, removing larger impurities in the sewage, adjusting the pH of the sewage to 7-8, conveying a sewage treatment agent and the sewage into a stirring tank for stirring reaction, filtering for the second time, adding sodium hypochlorite into a precipitation tank for standing to obtain treated water, wherein the sewage treatment agent comprises, by weight, 1-2 parts of polyacrylamide, 6-10 parts of polyaluminum chloride, 3-8 parts of modified cotton fiber, 20-30 parts of diatomite and 30-40 parts of activated carbon, and the modified cotton fiber is obtained by modifying fluorine-containing silane and diphenylmethane diisocyanate. The treatment process can remove heavy metal ions and stretching oil in the sewage, reduce COD value and impurity content in the sewage generated by the cleaning process, and improve the water resource utilization rate.

Inventors

  • ZHENG GUANGHUI
  • ZHAO PEIZHEN
  • Wen Chunguo

Assignees

  • 山东金帝精密机械科技股份有限公司

Dates

Publication Date
20260512
Application Date
20260128

Claims (10)

  1. 1. The water treatment process after the deep groove ball retainer is cleaned is characterized by comprising the following steps of: (1) Filtering the sewage generated after the deep groove ball retainer is cleaned for the first time to remove impurities with larger particles in the sewage; (2) Conveying the sewage treated in the step (1) into a sewage tank, adding a pH regulator into the sewage tank, and regulating the pH of the sewage to 7-8; (3) The sewage treatment agent is filled into a medicine liquid cylinder, then the sewage treatment agent and the sewage are synchronously conveyed into a stirring cylinder, and stirred and reacted for 45-60min in the stirring cylinder; (4) Delivering the water treated in the step (3) to a precipitation tank after secondary filtration, adding 0.05-0.1 wt% of sodium hypochlorite, and standing for 1-2h in the precipitation tank to obtain treated water; The sewage treatment agent comprises, by weight, 1-2 parts of polyacrylamide, 6-10 parts of polyaluminium chloride, 3-8 parts of modified cotton fibers, 20-30 parts of diatomite and 30-40 parts of activated carbon; the modified cotton fiber is obtained by modifying fluorine-containing silane and diphenylmethane diisocyanate.
  2. 2. The process for treating water after cleaning of a deep groove ball cage according to claim 1, wherein the stirring speed in the stirring tank in the step (3) is 40-50r/min, and/or The pH regulator is at least one of calcium hydroxide, sodium hydroxide, nitric acid and oxalic acid.
  3. 3. The water treatment process after cleaning the deep groove ball retainer according to claim 1, wherein the adding amount of the sewage treatment agent is 40-50 g/m 3 .
  4. 4. The water treatment process after cleaning the deep groove ball retainer according to claim 1, wherein the weight ratio of the polyacrylamide to the modified cotton fiber is 1 (3-4).
  5. 5. The post-cleaning water treatment process for deep groove ball holders according to claim 1, wherein the weight ratio of polyaluminum chloride to activated carbon is 1 (4-5).
  6. 6. The post-cleaning water treatment process of the deep groove ball cage according to claim 1, wherein the preparation method of the modified cotton fiber is as follows: a1, adding cotton fibers into a solvent for soaking to obtain cotton fiber suspension; A2, adding hydrogen peroxide into the cotton fiber suspension, and filtering and drying to obtain pretreated cotton fibers; A3, dissolving the pretreated cotton fiber in a solvent, then adding fluorine-containing silane and an acid binding agent to react for 1-2 hours at 50-70 ℃, and cooling and drying to obtain cotton fiber A; And A4, adding the cotton fiber A into a solvent, then adding diphenylmethane diisocyanate and dibutyltin dilaurate, heating to 60-70 ℃ in an inert gas atmosphere, stirring and mixing for 1-2h, and cooling and drying to obtain the modified cotton fiber.
  7. 7. A process for the post-cleaning water treatment of a deep groove ball cage according to claim 6, characterized in that the concentration of the cotton fiber suspension is 1-1.5%, and/or The weight ratio of the pretreated cotton fiber to the fluorine-containing silane is 1 (0.2-0.4).
  8. 8. The post-cleaning water treatment process for deep groove ball cages of claim 6 wherein said fluorine containing silane comprises one of perfluorododecyl trichlorosilane, perfluorooctyl trichlorosilane, perfluorodecyl trichlorosilane.
  9. 9. The post-cleaning water treatment process for deep groove ball cages according to claim 6, wherein the weight ratio of cotton fiber A to diphenylmethane diisocyanate is 1 (2-3).
  10. 10. The water treatment process after cleaning of the deep groove ball retainer according to any one of claims 1 to 9, wherein the preparation method of the sewage treatment agent is as follows: s1, stirring and mixing diatomite, active carbon and polyaluminium chloride at 25-35 ℃ for 20-30min to obtain a mixture A; s2, stirring and mixing the modified cotton fiber and the polyacrylamide for 10-20min at 25-35 ℃ to obtain a mixture B; And S3, stirring and mixing the mixture A and the mixture B for 5-10min, granulating, and drying to obtain the sewage treatment agent.

Description

Water treatment process for cleaned deep groove ball retainer Technical Field The application relates to a water treatment process for a clean deep groove ball retainer, and belongs to the technical field of sewage treatment. Background In order to avoid the defects of scratches, strains and the like on the surface of the retainer, the surface of the retainer is usually added with stretching oil to carry out stretching operation, so that the surface of the retainer is not only adhered with the metal scraps, the dust and other pollutants, but also is partially reserved with the stretching oil, and the metal particles, impurities and residual stretching oil on the surface of the retainer need to be removed by a cleaning process to meet the cleanliness of the final product. At present, the cleaning process of the deep groove ball retainer mainly adopts a water washing, high-pressure spray cleaning or integrated ultrasonic composite cleaning mode, a large amount of wastewater containing pollutants is generated in the cleaning process, the components of the wastewater are relatively complex, and the main characteristics of the wastewater include that firstly, organic stretching oil which is difficult to degrade is formed into stable emulsion under the action of a surfactant, and the stretching oil is difficult to separate by a simple physical method; secondly, impurities such as metal scraps, dust and the like generated in the preparation process of the retainer are heavy metal ions with smaller particle sizes and massive metal particles with larger particle sizes. The COD concentration in the sewage is usually high due to the complex content of the sewage generated by the cleaning process, and the sewage cannot reach the discharge requirement and the recycling requirement, so that the sewage is required to be treated and then reaches the discharge or recycling requirement. Chinese patent No. 120058172B discloses a chemical wastewater treatment method, which comprises the steps of filtering and impurity removing the chemical wastewater, adding polyacrylamide, zeolite powder, polyaluminium chloride and active carbon, carrying out primary stirring treatment, adding a wastewater treatment agent, carrying out secondary stirring treatment under ultraviolet light, and filtering to obtain the treated wastewater. In the above patent, the twice stirring treatment is to adsorb dust or heavy metal ions in the sewage, remove heavy metal or partial dust in a manner of heavy metal complexation and the like, however, a large amount of grease generally exists in the sewage, the existence of the grease can affect the later-stage utilization of the sewage, and the grease is easy to adsorb other toxic and harmful substances, so that the pollution degree of the water body is increased. Therefore, a water treatment process for cleaning the deep groove ball retainer, which can remove heavy metal ions, dust and other impurities in sewage and remove grease in sewage, is urgently needed at present. Disclosure of Invention In order to solve the problems, the water treatment process after the deep groove ball retainer is cleaned is provided, the treatment process can not only remove heavy metal ions in sewage, but also remove stretching oil, reduce COD value and impurity content in sewage generated by the cleaning process, clarify water, recycle water, improve water resource utilization rate and reduce production cost. In one aspect of the application, a water treatment process for a clean deep groove ball retainer is provided, which comprises the following steps: (1) Filtering the sewage generated after the deep groove ball retainer is cleaned for the first time to remove impurities with larger particles in the sewage; (2) Conveying the sewage treated in the step (1) into a sewage tank, adding a pH regulator into the sewage tank, and regulating the pH of the sewage to 7-8; (3) The sewage treatment agent is filled into a medicine liquid cylinder, then the sewage treatment agent and the sewage are synchronously conveyed into a stirring cylinder, and stirred and reacted for 45-60min in the stirring cylinder; (4) Delivering the water treated in the step (3) to a precipitation tank after secondary filtration, adding 0.05-0.1 wt% of sodium hypochlorite, and standing for 1-2h in the precipitation tank to obtain treated water; The sewage treatment agent comprises, by weight, 1-2 parts of polyacrylamide, 6-10 parts of polyaluminium chloride, 5-8 parts of modified cotton fibers, 20-30 parts of diatomite and 30-40 parts of activated carbon; the modified cotton fiber is obtained by modifying fluorine-containing silane and diphenylmethane diisocyanate. According to the application, the sewage generated after the deep groove ball retainer is cleaned is filtered for one time, larger metal particles and other impurities are primarily removed, then the pH value in the sewage is regulated, the dissolution of part of metal ions is reduced by controlling th