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An environmentally friendly treating agent for heavy-metal wastewater

A sewage treatment agent and heavy metal technology, which is applied in water/sewage treatment, adsorbed water/sewage treatment, neutralized water/sewage treatment, etc. Simple effect of raw materials

Inactive Publication Date: 2018-03-09
李长沛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing treatment agents for heavy metal wastewater treatment mostly use organic reagents to treat heavy metal-containing sewage. Although good results can be achieved, organic reagents pollute the water body to a certain extent and are expensive.
At present, there are also methods of using inorganic reagents to treat heavy metal sewage, but some organic reagents containing heavy metals are often used, which introduces new heavy metal pollution while treating heavy metal sewage.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] An environment-friendly heavy metal sewage treatment agent, comprising the following components by weight: 30 parts of activated carbon, 30 parts of calcium hydroxide, 5 parts of alum, 20 parts of ferric chloride, 20 parts of sepiolite, 35 parts of natural bleaching earth, aluminum 3 parts of calcium carbonate, 30 parts of magnesium carbonate.

[0019] Wherein, the activated carbon is activated carbon made from bamboo charcoal.

[0020] The preparation method of described environment-friendly heavy metal sewage treatment agent comprises the following steps:

[0021] 1) Calcium hydroxide, ferric chloride, sepiolite, natural fuller's earth, calcium aluminate and magnesium carbonate are pulverized and mixed thoroughly, dried at 80°C for 6 hours, and then calcined at 500°C for 5 hours to obtain a calcined mixture ;

[0022] 2) Put the activated carbon into the crushing equipment, crush it to 80 mesh, then put it into the granulator, add alum and the calcined mixture prepa...

Embodiment 2

[0025] An environment-friendly heavy metal sewage treatment agent, comprising the following components by weight: 60 parts of activated carbon, 10 parts of calcium hydroxide, 15 parts of alum, 10 parts of ferric chloride, 50 parts of sepiolite, 8 parts of natural bleaching earth, aluminum Calcium acid 10 parts, magnesium carbonate 15 parts.

[0026] Wherein, the activated carbon is activated carbon made of charcoal as a raw material.

[0027] The preparation method of described environment-friendly heavy metal sewage treatment agent comprises the following steps:

[0028] 1) Grind calcium hydroxide, ferric chloride, sepiolite, natural bleaching earth, calcium aluminate, and magnesium carbonate, mix them thoroughly, dry at 90°C for 3 hours, and then calcinate at 650°C for 3 hours to obtain a calcined mixture ;

[0029] 2) Put the activated carbon into the crushing equipment, crush it to 125 mesh, then put it into the granulator, add alum and the calcined mixture prepared in s...

Embodiment 3

[0032] An environment-friendly heavy metal sewage treatment agent, comprising the following components by weight: 35 parts of activated carbon, 15 parts of calcium hydroxide, 10 parts of alum, 15 parts of ferric chloride, 25 parts of sepiolite, 20 parts of natural bleaching earth, aluminum 5 parts of calcium carbonate, 20 parts of magnesium carbonate.

[0033] Wherein, the activated carbon is activated carbon made from coconut shell charcoal.

[0034] The preparation method of described environment-friendly heavy metal sewage treatment agent comprises the following steps:

[0035] 1) Calcium hydroxide, ferric chloride, sepiolite, natural fuller's earth, calcium aluminate, and magnesium carbonate were pulverized and mixed thoroughly, dried at 85°C for 5 hours, and then calcined at 600°C for 4 hours to obtain a calcined mixture ;

[0036] 2) Put the activated carbon into the crushing equipment, crush it to 100 mesh, then put it into the granulator, add alum and the calcined mi...

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PUM

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Abstract

An environmentally friendly treating agent for heavy-metal wastewater is disclosed. The treating agent includes, by weight, 30-60 parts of activated carbon, 10-30 parts of calcium hydroxide, 5-15 parts of alum, 10-20 parts of ferric chloride, 20-50 parts of sepiolite, 8-35 parts of natural bleaching clay, 3-10 parts of calcium aluminate and 15-30 parts of magnesium carbonate. The treating agent can form an alkaline environment, can form colloid in a water body and can effectively promote precipitation of heavy metal ions. Raw materials are simple and cheap. The production cost is low. The treating agent is suitable for large-scale industrial application and is high in practicality.

Description

technical field [0001] The invention relates to an environment-friendly heavy metal sewage treatment agent, which belongs to the field of waste water treatment. Background technique [0002] The human demand for water resources is expanding at an alarming rate, and at the same time, the increasingly serious water pollution is eroding a large amount of water resources available for consumption. Human beings all over the world are paying attention to environmental protection and environmental governance issues. Heavy metal pollution is also one of the environmental issues that people consider, because it seriously threatens human daily life and their own health. [0003] Industrial wastewater is the main source of water pollution, and wastewater containing heavy metal ions is particularly serious for water pollution. Heavy metals are extremely harmful to human health and the ecological environment. Wastewater containing heavy metals such as lead, mercury, cadmium, chromium, ...

Claims

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Application Information

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IPC IPC(8): C02F1/66C02F1/52C02F1/28C02F101/20
CPCC02F1/283C02F1/5236C02F1/66C02F2101/20
Inventor 李长沛
Owner 李长沛
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