Soil conditioner for treating cadmium and arsenic combined pollution of farmland and application method of soil conditioner
A soil conditioner and compound pollution technology, which is applied in the field of farmland soil remediation, can solve the problems of secondary pollution, unknown soil-crop coupling treatment effect, and reduced effectiveness of heavy metals, and achieves simplified process, labor cost saving, and strong application scope. Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0030] Embodiment 1: A kind of preparation method of the soil conditioner that is used to control farmland cadmium, arsenic compound pollution
[0031] (1) Preparation of modified biochar: take dry rice straw from non-heavy metal-contaminated areas, crush it, and then pyrolyze and carbonize it at 500°C for 3 hours in a closed nitrogen atmosphere to obtain biochar. Stir and mix with 0.15mol / L nitric acid, remove ash and acid modification at room temperature, the stirring time is 2h, the stirring speed is 200r / min, after the stirring is completed, filter the leaching solution, and the obtained solid is washed with deionized water for several times until The pH of the eluate is 6.5-7.5, then dried at 90°C to constant weight, taken out after cooling, ground and sieved to obtain powdery modified biochar with a particle size range of 100-200 mesh.
[0032] (2) Get 50 mass parts of the modified biochar of step (1) gained, after mixing with 15 mass parts of reduced iron powder, 15 mas...
Embodiment 2
[0034] Six flat fields with an area of about 0.9 mu were selected in a township in Datian County, Fujian Province for the verification test of soil conditioners. The test is set with 3 treatments, each treatment is repeated 3 times, and there are 9 plots in total. A 2.5-meter-wide protection row is set around the test area, and field ridges (20 cm in width and 30 cm in height) are set between every two plots, and the fields are covered. Plastic film to prevent water and fertilizer from different plots, and each plot is randomly arranged in blocks.
[0035] Treatment 1: blank (CK), conventional fertilization, without any soil conditioner;
[0036] Process 2: the soil conditioner 400kg / mu that conventional fertilization+embodiment one makes;
[0037] Treatment 3: conventional fertilization+800 kg / mu of the soil conditioner prepared in Example 1.
[0038] On June 30, 2020, the soil conditioner and water were mixed uniformly through a mixing tank at a mass ratio of 1:10 to form ...
PUM
Property | Measurement | Unit |
---|---|---|
particle size (mesh) | aaaaa | aaaaa |
specific surface area | aaaaa | aaaaa |
particle size (mesh) | aaaaa | aaaaa |
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, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com