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

A daily maintenance dredging method for sediment in medium and small water bodies

A daily maintenance and bottom sludge technology, which is applied in chemical instruments and methods, water/sludge/sewage treatment, dehydration/drying/concentrated sludge treatment, etc., can solve problems such as water alkalinization and unfavorable water ecology

Active Publication Date: 2021-04-09
QUANZHOU NORMAL UNIV
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology can turn the floating mud into solid mud, which can be excavated. The problem is that the water body is seriously alkalized, which is seriously unfavorable to the water ecology.

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

[0037] A rural ditch in Quanzhou, with a width of about 3 meters, accumulated a large amount of floating mud underwater, and the mud surface floated up in summer.

[0038] Use bagasse to impregnate cationic polyacrylamide, stick coarse sand in the pellet machine, roll into pellets, and then dry to form a nearly round loose agglomerate elastic aggregate with a real density of about 1.5 g / cubic centimeter, high molecular polymer ( Cationic polyacrylamide) is used in an amount of about 0.1-1% of the weight of the loose agglomerate elastic aggregate.

[0039] About one thousandth of the floating mud weight aluminum sulfate and two thousandths of the dolomite powder are put into the ditch in advance, and the bottom mud flocculation pretreatment is carried out by raking.

[0040] After 12 hours, put in loose lumpy elastic aggregates to cover the bottom mud, and use a steel wire rake to roll the elastic aggregates. After 15 minutes, a relatively dense near-spherical sludge pellet wil...

Embodiment 2

[0043] An earthen pond for shrimp farming in Quanzhou, about 1 mu, emergency repair of sediment in the late stage of shrimp farming

[0044] In the big test, loose palm husk slag was impregnated with chitin, a biological flocculant, and steel slag particles were artificially pasted on the side of the pool to adjust the weight, and then dried to form a nearly round loose elastic aggregate with a real density of about 1.6 g / cubic centimeter. Chitin The dosage is about 0.1-1% of the weight of the elastic aggregate.

[0045] Add 0.05% of the sediment weight of alum particles to sink to the bottom, followed by adding traditional bottom modification agents magnesium peroxide and calcium peroxide to kill harmful bacteria. The wire brush slightly rakes the flocculated sediment and oxidizes and inhibits the fermented sediment.

[0046] Add elastic aggregates to cover the bottom mud, and use a steel wire rake to roll the elastic aggregates. After 30 minutes, a relatively dense near-sphe...

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
densityaaaaaaaaaa
diameteraaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a daily maintenance dredging method for bottom mud of medium and small water bodies: 1) putting aluminum salt particles and alkaline mineral powder in advance in the bottom mud area, and raking the bottom mud for pre-flocculation treatment of the bottom mud; 2) bonding rigid fibers Form loose aggregate elastic aggregate, and spray cationic flocculant; 3) Put the elastic aggregate into the water to make it sink freely, and the elastic aggregate covers the bottom of the water; 4) Drag the elastic aggregate back and forth to make it roll on the bottom mud surface , a large amount of floating mud is agglomerated on the elastic aggregate, and gradually dehydrated and compacted underwater due to mechanical movement, becoming a sludge pellet with a density much higher than that of the floating mud; 5) Raking the sludge pellet, when it is obviously not easy to When deformed, continue to drag the rake to move it away from the shore. The present invention adopts fiber toughening flocculation granulation to form ball-shaped sludge balls with skeleton inside and flocculated bottom mud wrapped outside. This structure can meet the purpose of sweeping and transporting with simple machinery. After the sludge pellets are dried, they can be used as landscaping soil to realize rational utilization of resources.

Description

technical field [0001] The invention relates to the field of water body dredging, in particular to a daily maintenance dredging method for bottom mud in small and medium water bodies. Background technique [0002] Sediment dredging is currently the main water source control method, currently there are several methods: 1. Dry water operation: dry soil excavation, hydraulic filling (usually used for small and micro water bodies); 2. Water-carrying operation: grab type, ordinary twisting suction type, bucket wheel type, chain bucket type; 3. Lightly polluted water-carrying Operating technology - environmental protection cutter suction, pump suction dredging. The common features of the above dredging methods are: when the river channel is dredged, the silt exists in an approximate flow-plastic state, and when the external force stirs, it will flow and the mud will float away, causing serious pollution around and downstream of the dredging site. Large lakes, harbor bays, large ...

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): C02F11/143C02F11/145C02F11/147
CPCC02F11/14
Inventor 陈楷翰陈昱霖
Owner QUANZHOU NORMAL UNIV
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