Conditioning and tempering composite material for treating river and lake polluted sediment and its preparation method

A technology for polluting sediment and composite materials, applied in sludge treatment, water/sludge/sewage treatment, dewatering/drying/concentrated sludge treatment, etc. The problem of poor curing effect, etc., can improve the structural properties and water characteristics, wide application range, and improve the strength.

Active Publication Date: 2017-07-21
POWERCHINA WATER ENVIRONMENT GOVERANCE
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a conditioning and tempering composite material for river and lake polluted sediment, aiming to solve the problem that the existing curing agent has poor curing effect and cannot effectively reduce the concentration of organic matter and heavy metals in the sediment

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Conditioning and tempering composite material for treating river and lake polluted sediment and its preparation method
  • Conditioning and tempering composite material for treating river and lake polluted sediment and its preparation method
  • Conditioning and tempering composite material for treating river and lake polluted sediment and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A river and lake polluted sediment treatment conditioning conditioning composite material, based on the total mass of the composite material as 100%, including each component shown in the mass percentage content of Example 1 in Table 1, wherein the The nano-micron modified gelling material is prepared by the following method:

[0056] Provides active SiO 2 40%, active Al 2 o 3 20%, active CaO 20%, active Fe 2 o 3 15%, active TiO 2 1%, active Na 2 O2%, active MgO 2%;

[0057] Mixing the above-mentioned components to form a mixed material, and calcining the mixed material at 1000-1450° C. for more than 20 minutes to obtain a sintered product;

[0058] The obtained sinter was mixed with hemihydrate CaSO 4 Mix evenly with nano-silicon dioxide at a ratio of 1:0.05:0.02, grind until D95≤15μm, and obtain nano-micron modified gelling material.

[0059] Table 1

[0060]

[0061]

[0062] Add the conditioning and tempering composite material for processing the ...

Embodiment 2

[0071]A river and lake polluted sediment treatment, conditioning and tempering composite material, based on the total mass of the composite material as 100%, includes each component shown in the mass percentage content in Example 2 of Table 1, wherein the The preparation method of the nano-micron modified gelling material is the same as that of Example 1.

[0072] The river and lake swell polluted sediment treatment conditioning and tempering composite material described in Example 2 is added to the lake pollution silt, and the consumption of the river and lake swell pollution silt treatment conditioning and tempering composite material is the dry weight of the polluted bottom sludge The ratio is shown in Example 2 of Table 1. After conditioning and tempering for 10-30min, enter the filter press for mud-water separation and solidification to obtain mud cake completely. The sediment before and after conditioning is tested for pollutants. The detection standard is "GB 15618-1995...

Embodiment 3

[0079] A river and lake surge polluted sediment treatment conditioning conditioning composite material, based on the total mass of the composite material as 100%, including each component shown in the mass percentage content in Example 3 of Table 1, wherein the The preparation method of the nano-micron modified gelling material is the same as that of Example 1.

[0080] The river and lake polluted sediment treatment conditioning conditioning composite material described in Example 3 is added to the sewage treatment plant contaminated sediment, and the amount of the river and lake pollution sediment treatment conditioning conditioning composite material is the polluted sediment The ratio of the dry weight is shown in Example 3 of Table 1. After conditioning and tempering for 10-30 minutes, the mixture is put into a filter press for mud-water separation and solidification to obtain a mud cake. The sediment before conditioning was tested for pollutants and microorganisms. The tes...

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 size (mesh)aaaaaaaaaa
compressive strengthaaaaaaaaaa
Login to view more

Abstract

The invention provides a conditioning and tempering composite material for river and lake polluted sediment treatment, which comprises the following components in the following mass percentages based on the total mass of the composite material as 100%: nano-micron modified gelling material 52‑78.7%; polyaluminum ferric silicate 6‑12%; zeolite powder 3‑7%; activated calcium oxide 2‑8%; anhydrite 3‑6%; activated carbon powder 2‑6%; sodium silicate 0.2 ‑1%; silica powder 4‑7%; trisodium thiocyanate 0.1‑1.0%. The conditioning and tempering composite material for river and lake polluted sediment provided by the present invention can significantly reduce the content of heavy metals, organic pollutants, and microorganisms in the sediment, disperse and destroy flocculents and aggregates in the mud, and improve the quality of the mud. Structural properties and hydraulic properties, accelerate the separation of mud and water.

Description

technical field [0001] The invention belongs to the technical field of bottom mud treatment, and in particular relates to a conditioning and tempering composite material for treating river and lake polluted bottom mud and a preparation method thereof. Background technique [0002] Sediment is an important part of the muddy water environment, a basic factor for the existence and development of social and economic systems, and plays a vital role in supporting the regional national economic development. Due to the accumulation of history and the recent rapid development of economic construction and other reasons, more than 90% of cities in my country have increasingly severe muddy water environment problems, mainly manifested in serious siltation of urban rivers, shortage of water resources, excessive water pollution, and damage to water ecological balance. Wait. The increasingly serious problem of muddy water environment has led to more and more serious obstacles to the sustai...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/14C02F101/20C02F11/143C02F11/145
CPCC02F2101/20C02F11/145C02F11/143
Inventor 王民浩陈士强翟德勤刘黎慧赵新民王冠东
Owner POWERCHINA WATER ENVIRONMENT GOVERANCE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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