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Coking wastewater compound chemical and preparation method thereof and application thereof

A coking wastewater and medicament technology, which is applied in chemical instruments and methods, water/sewage treatment, neutralized water/sewage treatment, etc., can solve problems such as high chroma and toxic substance content, and cannot meet the requirements of biological treatment, and achieve pore The effect of high density, fast sedimentation speed and large specific surface area

Active Publication Date: 2014-07-16
SHANDONG SUNYON GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The invention effectively solves the limitation that coking wastewater has high content of COD, ammonia nitrogen, chroma and toxic substances and cannot meet the requirements of biological treatment

Method used

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  • Coking wastewater compound chemical and preparation method thereof and application thereof

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Effect test

Embodiment 1

[0039] Take 30% magnesium sulfate, 20% potassium dihydrogen phosphate, 20% sodium dihydrogen phosphate, 10% sodium hydroxide, and 20% powdered activated carbon. After the above raw materials are fully mixed, dry at 100°C for 60 minutes to make a denitrification agent; take 20% ferric chloride, 20% ferric sulfate, 30% aluminum sulfate, 5% cationic polyacrylamide, calcium hydroxide 20%, diatomaceous earth 5%, the above raw materials are fully mixed, and dried at 60°C for 90 minutes to make a coagulant.

Embodiment 2

[0041] Get 20% of magnesium carbonate, 30% of magnesium chloride, 30% of disodium hydrogen phosphate, 15% of sodium hydroxide, and 5% of powdered activated carbon. After the above raw materials are fully mixed, dry at 90°C for 90 minutes to make a denitrification agent; take 30% ferric chloride, 20% ferric sulfate, 25% aluminum chloride, 5% anionic polyacrylamide, sodium hydroxide 10%, diatomaceous earth 10%, after mixing the above raw materials thoroughly, dry at 90°C for 30 minutes to make coagulant.

Embodiment 3

[0043] Take 36% of magnesium chloride, 32% of dipotassium hydrogen phosphate, 25% of calcium hydroxide, and 7% of powdered activated carbon. After fully mixing the above raw materials, dry at 100°C for 60 minutes to make a denitrification agent; take ferric sulfate 42%, Aluminum Chloride 36%, Cationic Polyacrylamide 5%, Calcium Hydroxide 12%, Powdered Diatomaceous Earth 5%, after mixing the above raw materials thoroughly, dry at 60°C for 45 minutes to make coagulation agent.

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Abstract

The invention discloses coking wastewater compound chemical and a preparation method thereof and application thereof, and belongs to the field of waste water treatment. The coking wastewater compound chemical is composed of a denitrfying agent and a coagulate flocculating agent. After magnesium salt, phosphate, an alkali adjusting agent and active carbon are mixed fully, drying is carried out at 70-100 DEG C for 60-90 minutes to prepare the denitrfying agent; ferric salt, aluminum salt, PAM, an alkali adjusting agent and kieselguhr are mixed fully, and then drying is carried out at 60-60 DEG C for 30-60 minutes to prepare the coagulate flocculating agent. The preparation technology of the coking wastewater compound chemical is simple, and cost is low. The coking wastewater compound chemical is applied to treatment of coking wastewater, the content of COD, the content of ammonia nitrogen, the content of volatile phenol and the content of cyanide in the coking wastewater are reduced effectively, and the burden of follow-up biological treatment is relieved.

Description

technical field [0001] The invention relates to the preparation and application of a compound medicament, in particular to a coking wastewater compound medicament and its preparation method and application, belonging to the field of wastewater treatment. Background technique [0002] Coking wastewater is the wastewater of a large number of aromatic compounds and heterocyclic compounds produced in the process of coal coke, gas purification and coking product recovery. Coking wastewater is a recognized industrial wastewater that is difficult to biodegrade. The difficulty of its treatment lies in the high content of cyanide and phenols, the difficulty of biodegradation of polycyclic aromatic hydrocarbons and heterocyclic compounds, poor biodegradability, and high concentration of ammonia nitrogen inhibits biological activity. The denitrification effect is not good. [0003] At present, the treatment method of coking wastewater mainly adopts biological method for treatment. Ho...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/56C02F1/58C02F1/66
Inventor 殷自道高桂富殷云华
Owner SHANDONG SUNYON GRP
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