Method for harmlessly treating high-zinc and high-lead sludge
A harmless treatment of sludge, applied in the harmless treatment of lead sludge, high zinc field, can solve the problems of water and soil heavy metal pollution, achieve good environmental and social benefits, reduce production costs, prices cheap effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0046] Example 1
[0047] Combine figure 1 , A method for harmless treatment of sludge containing high zinc and lead, the steps are:
[0048] A. Using steel wire rope factory pickling sludge with lead content of 0.4-2% and zinc content of 3-15% as raw materials, the steel wire rope sludge containing high zinc and lead is dried to a constant weight; the drying of steel wire rope sludge The temperature is 100-105℃, which does not change the internal material composition of the sludge.
[0049] The raw material used in the present invention is steel wire rope pickling sludge that cannot be effectively treated for a long time and is harmful to the environment, which belongs to dangerous solid waste. After treatment, the harmlessness and resource utilization of the raw materials are realized, and the working environment of the wire rope factory is improved; at the same time, the pollution The mud output is large and stable, the price is low and urgently needs treatment, there is no shor...
Example Embodiment
[0062] Example 2
[0063] This embodiment is the same as embodiment 1, wherein in step A, the steel wire rope factory pickling sludge with a lead content of 0.4% and a zinc content of 3% is used as the raw material to dry the steel wire rope sludge containing high zinc and lead to a constant temperature. Heavy; the drying temperature of wire rope sludge is 100℃, which does not change the internal composition of the sludge;
[0064] In step C, the pulverized wire rope sludge is added to 160g / L NaOH solution for reaction, and the dosage ratio is 5 cubic strong alkali solution for 1 ton of dry sludge; the reaction temperature is 50°C and 300 revolutions per minute. Stir at low speed, the reaction time is 60min, at the optimal reaction temperature, fully react to achieve the best extraction efficiency;
[0065] In step D, filter, rinse with water, and rinse 3 times;
[0066] In step E, the sulfide separating agent is added to the filtrate containing zinc and lead complex obtained by filt...
Example Embodiment
[0070] Example 3
[0071] This embodiment is the same as embodiment 1, wherein in step A, the steel wire rope factory pickling sludge with a lead content of 2% and a zinc content of 15% is used as the raw material, and the steel wire rope sludge containing high zinc and lead is dried to a constant temperature. Heavy; the drying temperature of wire rope sludge is 105℃, which does not change the internal material composition of the sludge;
[0072] In step C, the crushed steel wire rope sludge is added to 240g / L NaOH solution for reaction, and the dosage is 20 cubic meters of strong alkali solution for 1 ton of dry sludge; the reaction temperature is 70°C and 600 revolutions per minute. Stir at low speed, the reaction time is 80min, at the optimal reaction temperature, fully react to achieve the best extraction efficiency;
[0073] In step D, filtering, using plate and frame filter press for dehydration and filtering, and the filter residue is washed with water for 5 times;
[0074] In...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap