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Heavy metal sewage treatment agent and preparation method thereof

A technology of sewage treatment agent and heavy metal, which is applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. It can solve the problems of complex treatment process, long reaction time and high treatment cost. Achieve the effect of simple treatment method, low treatment cost and good effluent quality

Inactive Publication Date: 2017-05-31
NANNING HEIJING INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are three main types of heavy metal wastewater treatment methods in various countries in the world: the first type is the method of removing heavy metal ions in wastewater through chemical reactions, including neutralization precipitation method, sulfide precipitation method, ferrite co-precipitation method, chemical reduction method, Electrochemical reduction method and polymer heavy metal trapping agent method, etc., but this method has a long reaction time and low treatment efficiency; the second type is to adsorb and concentrate heavy metals in wastewater without changing their chemical form , Separation methods, including adsorption, solvent extraction, evaporation and coagulation, ion exchange and membrane separation, etc., the treatment process is complex and the treatment cost is high; the third category is flocculation, absorption, accumulation, enrichment, etc. by means of microorganisms or plants The method of removing heavy metals in wastewater by action, including biological flocculation, biochemical method and plant ecological restoration, etc., this method has the disadvantages of high cost, immature technology, and easy to cause biological pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A method for preparing a heavy metal sewage treatment agent, the specific steps are: (1) first weigh 15 parts of sodium polyacrylate, 10 parts of aluminum sulfate, 10 parts of ferric chloride, 20 parts of activated sludge, and 5 parts of tea leaves according to the parts by weight . , aluminum sulfate, and ferric chloride were added to deionized water, and ultrasonic vibration was used for 15 minutes to obtain the mixed solution I; (4) sodium alginate was added to the mixed solution I, and stirred while adding, to obtain the mixed solution II; (5) Add the above powder into the mixed liquid II, stir for 10 minutes, and use ultrasonic vibration for 5 minutes to obtain the finished product.

Embodiment 2

[0018] A method for preparing a heavy metal sewage treatment agent, the specific steps are: (1) first weigh 25 parts of sodium polyacrylate, 30 parts of aluminum sulfate, 15 parts of ferric chloride, 25 parts of activated sludge, and 10 parts of tea leaves according to the parts by weight . , aluminum sulfate, and ferric chloride were added to deionized water, and ultrasonic vibration was used for 20 minutes to obtain the mixed solution I; (4) sodium alginate was added to the mixed solution I, and stirred while adding, to obtain the mixed solution II; (5) Add the above powder into the mixed liquid II, stir for 15 minutes, and use ultrasonic vibration for 10 minutes to obtain the finished product.

Embodiment 3

[0020] A method for preparing a heavy metal sewage treatment agent, the specific steps are: (1) first weigh 22 parts of sodium polyacrylate, 25 parts of aluminum sulfate, 13 parts of ferric chloride, 22 parts of activated sludge, and 9 parts of tea leaves according to the parts by weight , 6 parts of sodium alginate, 2 parts of plant ash, and 90 parts of deionized water, for later use; (2) Put activated sludge, tea leaves, and plant ash into the pulverizer, and grind them into 90-mesh powder for later use; (3) Sodium polyacrylate , aluminum sulfate, and ferric chloride were added to deionized water, and ultrasonic vibration was used for 16 minutes to obtain the mixed solution I; (4) sodium alginate was added to the mixed solution I, and stirred while adding, to obtain the mixed solution II; (5) Add the above powder into the mixed liquid II, stir for 12 minutes, and use ultrasonic vibration for 8 minutes to obtain the finished product.

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Abstract

The invention discloses a heavy metal sewage treatment agent and a preparation method thereof. The heavy metal sewage treatment agent is prepared from the following components in parts by weight: 15-25 parts of sodium polyacrylate, 10-30 parts of aluminum sulfate, 10-15 parts of ferric chloride, 20-25 parts of active sludge, 5-10 parts of tea leaves, 5-10 parts of sodium alginate, 1-3 parts of plant ash and 70-200 parts of deionized water. The heavy metal sewage treatment agent has excellent removal rate and high treatment efficiency for various metal ions in heavy metal sewage, has stable performance, good precipitation effect, good effluent water quality and simple treatment method and is low in treatment cost. The heavy metal sewage treatment agent has high purity, no toxicity and no influence on operators, and cannot cause biological pollution or secondary pollution.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a heavy metal sewage treatment agent and a preparation method thereof. Background technique [0002] Heavy metal wastewater refers to wastewater containing heavy metals discharged from industrial production processes such as mining and metallurgy, machinery manufacturing, chemical industry, electronics, and instrumentation. Heavy metal wastewater mainly comes from wastewater discharged from mining, smelting, electrolysis, electroplating, pesticides, medicines, paints, pigments and other enterprises. The type, content and existing form of heavy metals in wastewater vary with different production enterprises. Heavy metal wastewater is one of the most serious environmental pollution and one of the most harmful industrial wastewater to humans, and its water quality and quantity are related to the production process. Heavy metals in wastewater generally cannot be decomposed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/52C02F101/20
CPCC02F1/00C02F1/52C02F2101/20
Inventor 张春花
Owner NANNING HEIJING INFORMATION TECH CO LTD
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