Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Processing technology of walnut shell filtering material

A processing technology, walnut shell technology, applied in the direction of liquid separation, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of inability to absorb waste water, easy agglomeration of harmful substances, etc., achieve remarkable filtering effect and improve the quality of purified water , the effect of high hardness

Inactive Publication Date: 2015-12-09
SHANXI CHANGYUAN AGRI & SIDELINE NATIVEPROD
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a processing technology for walnut shell filter material in order to solve the problem that the existing filter material cannot absorb harmful substances in waste water and is easy to agglomerate

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: a kind of processing technology of walnut shell filter material, comprises the steps:

[0015] (1) Impurity removal: the raw material walnut shells are air-separated with a winnowing machine, and impurities such as green bark and firewood are filtered out;

[0016] (2) Disinfection and cleaning: Soak the walnut shells after winnowing with 5ppm sodium hypochlorite disinfectant for 5 minutes and then clean them with distilled water;

[0017] (3) Drying and crushing: Dry in a dryer at 65°C for 14 hours to make the water content less than 10%; crush with a crusher;

[0018] (4) Polishing, steam washing and degreasing: polishing with a drum polishing machine to remove surface convex fronts to make the surface roughness reach Ra0.8; steam washing machine for 1 hour; then degrease in a dryer at 85°C for 20 hours, containing The water content is less than 8%; irradiated with 185nm wavelength ultraviolet rays for 20 hours to sterilize; screened and graded, that is...

Embodiment 2

[0022] Embodiment 2: a kind of processing technology of walnut shell filter material, the walnut shell after winnowing is that the sodium hypochlorite disinfectant solution of 5ppm is soaked for 7 minutes and cleaned with distilled water after air selection; steam washing for 2 hours; then degreasing in a dryer at 88° C. for 20 hours, and the prepared walnut shell filter material has a particle size of 2.1 mm. All the other steps are the same as those described in Example 1. It has been determined that the walnut shell filter material prepared by the method of the present invention is used to treat wastewater, the removal rate of suspended solids reaches 97%, the removal rate of oil reaches 93%, the turbidity of filtered water is reduced from above 5NTU to below 1NTU, and the filtration effect is remarkable.

Embodiment 3

[0023] Embodiment 3: a kind of processing technology of walnut shell filter material, the walnut shell after air selection is soaked in the sodium hypochlorite disinfectant solution of 5ppm with concentration for 10 minutes and cleaned with distilled water after disinfection; Drying machine 70 ℃ dried 18 hours, steam washing machine steaming and washing for 3 hours; then degreasing in a dryer at 90° C. for 20 hours, and the prepared walnut shell filter material has a particle size of 2.5 mm. All the other steps are the same as those described in Example 1. It has been determined that the walnut shell filter material prepared by the method of the present invention is used to treat wastewater, the removal rate of suspended solids reaches 96%, the removal rate of oil reaches 94%, the turbidity of filtered water is reduced from above 5NTU to below 1NTU, and the filtration effect is remarkable.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of adsorption material preparation, aims to solve the problems that conventional filtering materials cannot absorb harmful substances in wastewater and get agglomerated easily, and provides a processing technology of a walnut shell filtering material. The processing technology comprises the following steps: removing the impurities, disinfecting the walnut shells, washing, drying, grinding, polishing, steaming and washing to remove the grease, polishing the walnut shells in a cylinder polishing machine to remove the projected parts on the surface and reach a surface roughness of Ra0.8; steaming and washing the walnut shells in a steaming and washing machine for 1 to 3 hours; degreasing the walnut shells in a baking oven with a temperature of 85 to 90 DEG C for 20 hours until the water content is less than 8%; irradiating the walnut shells by UV rays with a wavelength of 185 nm for 20 hours to kill the bacteria; and finally screening and grading so as to obtain the walnut shell filtering material. The prepared walnut shell filtering material can absorb suspensions and harmful substances in wastewater. During the application process, the hardness of the provided filtering material is high, the filtering material will not get rotten or agglomerated, the toughness of the filtering material is high, moreover, the filtering material can be easily regenerated, thus the replacement frequency is reduced, the labor and time are saved, and the cost is low. The processing technology is simple, the water quality can be improved effectively, the raw material sources are wide, and the using effect is prominent. The provided novel filtering material can greatly reduce the water treatment cost.

Description

technical field [0001] The invention belongs to the technical field of adsorption material preparation, and in particular relates to a processing technology of walnut shell filter material. Background technique [0002] At present, most of the filter materials for wastewater treatment widely used in China are made of quartz sand, anthracite and other materials. During wastewater treatment, most of these materials are layered into filter tanks, and the wastewater can be filtered through the filter tanks. Purpose. The above-mentioned materials have the following disadvantages as filter materials for wastewater treatment: one is that they have no adsorption capacity, and can only play the role of filtering suspended solids in wastewater, and cannot absorb harmful substances. The second is that it is easy to agglomerate and needs to be replaced frequently, which is time-consuming and labor-intensive, and the cost is high. [0003] The invention patent "Walnut shell adsorption ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/40
Inventor 李保卫冯蕊蕊冯光旭冯昱张秀婷
Owner SHANXI CHANGYUAN AGRI & SIDELINE NATIVEPROD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com