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Ecological management method for heavy metal pollution river

A technology for ecological governance and heavy metals, applied in the treatment of polluted waterways/lakes/ponds/rivers, water pollutants, water/sewage treatment, etc. Water ecological system balance damage and other problems, to achieve the effects of excellent environmental friendliness, less secondary pollution, and improved use efficiency

Inactive Publication Date: 2018-07-06
NINGBO JIANTONG ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current environmental protection requirements are extremely strict on the discharge standards of industrial wastewater, but there is still no effective way to truly achieve zero discharge of industrial wastewater containing heavy metal ions, which will cause some of the heavy metal ions in industrial wastewater to flow into rivers In the middle, after a long period of time, its pollution load far exceeds the environmental capacity and self-purification capacity of the city's limited receiving water body, causing heavy metal ion pollutants in the river water to seriously exceed the standard, resulting in the destruction of the balance of the water ecosystem, a sharp decline in biodiversity, and the ecological environment of the water body. Declining functionality and usability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of ecological treatment method of heavy metal polluted river course provided by the present embodiment, comprises the following steps:

[0020] (1) drop into flocculant earlier in the river course, described flocculant comprises 30 parts of polyamide xanthate sodiums, 15 parts of starch phosphates, 10 parts of chitosan, 5 parts of acrylamides, 20 parts of initiators by weight, 5 parts of ferric sulfate, 10 parts of nanometer iron ferric oxide, 20 parts of nanometer ferrous chloride, 5 parts of modifying agent, described modifying agent comprises 30 parts of chloroacetic acid, 20 parts of cationic etherification agent, 15 parts by weight Polyepichlorohydrin amine, 5 parts of graphene;

[0021] (2) drop into heavy metal trapping agent again in the river course, remove the heavy metal ion in the river course, described heavy metal trapping agent comprises 40 parts of tetrathiocarbamic acid, 15 parts of dithiocarbamate, 10 parts by weight Parts of starch, 8 parts of...

Embodiment 2

[0027] The ecological treatment method of a kind of heavy metal polluted river course provided by this embodiment, its general steps are the same as embodiment 1, its main difference is that, described flocculant comprises 50 parts by weight of polyamide xanthate sodium, 20 parts of starch phosphoric acid Esters, 15 parts of chitosan, 10 parts of acrylamide, 30 parts of initiator, 10 parts of ferric sulfate, 15 parts of nano ferric oxide, 30 parts of nano ferrous chloride, 10 parts of modifier.

[0028] The ecological treatment method of the heavy metal polluted river course of this embodiment can solve the problems of environmental pollution caused by the heavy metal polluted river course, and save energy and protect the environment. At the same time, the flocculation ability is excellent, so that the turbidity removal rate of sewage can reach more than 99%, and the heavy metal removal rate can reach more than 95%.

Embodiment 3

[0030] A kind of ecological treatment method of heavy metal polluted river course provided by this embodiment, its general steps are the same as embodiment 1, and its main difference is that, described modifying agent comprises 40 parts of chloroacetic acid, 30 parts of cationic etherifying agent, 30 parts of polyepichlorohydrin amine, 10 parts of graphene.

[0031] The ecological treatment method of the heavy metal polluted river course of this embodiment can solve the problems of environmental pollution caused by the heavy metal polluted river course, and save energy and protect the environment. At the same time, the flocculation ability is excellent, so that the turbidity removal rate of sewage can reach more than 99%, and the heavy metal removal rate can reach more than 95%.

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Abstract

The invention discloses an ecological management method for a heavy metal pollution river. The method comprises sewage flocculating treatment and heavy metal capturing, wherein the sewage treatment flocculating agent comprises the following components in parts by weight: 30-50 parts of sodium xanthate polyamide, 15-20 parts of starch phosphate, 10-15 parts of chitosan, 5-10 parts of acrylamide, 20-30 parts of an initiator, 5-10 parts of ferric sulfate, 10-15 parts of nanometer iron oxide, 20-30 parts of nano ferrous chloride and 5-10 parts of a modifier; the heavy metal capturing agent comprises the following components in parts by weight: 40-50 parts of tetrathiocarbamic acid, 15-20 parts of dithiocar-bamate, 10-15 parts of starch, 8-10 parts of polyacrylamide, 6-8 parts of sodium n-butylxanthate, 5-10 parts of polyvinyl alcohol and 20-30 parts of a filler. The independently developed flocculating agent and heavy metal capturing agent are adopted, so that ecological management of theheavy metal pollution river is realized.

Description

technical field [0001] The invention relates to a method for treating polluted rivers, in particular to an ecological treatment method for heavy metal polluted rivers. Background technique [0002] The current environmental protection requirements are extremely strict on the discharge standards of industrial wastewater, but there is still no effective way to truly achieve zero discharge of industrial wastewater containing heavy metal ions, which will cause some of the heavy metal ions in industrial wastewater to flow into rivers In the middle, after a long period of time, its pollution load far exceeds the environmental capacity and self-purification capacity of the city's limited receiving water body, causing heavy metal ion pollutants in the river water to seriously exceed the standard, resulting in the destruction of the balance of the water ecosystem, a sharp decline in biodiversity, and the ecological environment of the water body. Function and use function are declinin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/20
CPCC02F1/285C02F1/5236C02F1/5263C02F1/542C02F1/56C02F3/322C02F9/00C02F2101/20C02F2103/007
Inventor 史建林
Owner NINGBO JIANTONG ENVIRONMENTAL PROTECTION TECH
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