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Agent for realizing reduction of low-concentration cyanogen-containing coking wastewater sludge and preparation method thereof

A coking wastewater and sludge reduction technology, applied in the field of water treatment, can solve problems such as the inability to reduce chloride ions in water, substandard water quality parameters, and a large amount of sludge generated, and achieve low cost, good synergy, and environmental protection. Effect

Active Publication Date: 2021-12-10
鞍钢栗田(鞍山)水处理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the coking wastewater after biochemical treatment mainly relies on two processes of adding cyanide removal agent and back-end ozone oxidation. Generally speaking, the treatment cost is high, the amount of sludge generated is large, the energy consumption is large, and the requirements for the equipment itself are strict. Complicated, and there are problems that the water quality parameters are not up to standard and the chlorine ions in the water cannot be reduced

Method used

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  • Agent for realizing reduction of low-concentration cyanogen-containing coking wastewater sludge and preparation method thereof
  • Agent for realizing reduction of low-concentration cyanogen-containing coking wastewater sludge and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In this example, the medicament for reducing the amount of low-concentration cyanide-containing coking wastewater sludge is obtained according to the following ratio and method: add 5 g of sodium bicarbonate to 76 g of water, and after fully dissolving, use a microwave processor to dissolve 4 g of alginic acid Disperse the sodium evenly into the solution, then quickly add 9g of titanium dioxide by-products - ferrous sulfate heptahydrate, 5g of anhydrous copper sulfate, stir evenly and defoam for 45 minutes, the obtained gel state substance full of abundant voids, put it Dry in a vacuum oven at 40° C. for 60 hours, crush and pass through a 100-mesh sieve to obtain an adsorbent. After anaerobic fermentation of 10 parts of Salsify ginseng fruit and 4 parts of potassium carnate, 6 parts of quicklime were added thereto, dried and pulverized after shaking evenly, and a powder product was obtained through a 50-mesh sieve, and then mixed with 0.8 parts of alkali-hydrolyzed poly...

Embodiment 2

[0045] In this example, the medicament for realizing the reduction of low-concentration cyanide-containing coking wastewater sludge is obtained according to the following ratio and method: in 73g of water, add 7g of sodium bicarbonate, and after fully dissolving, use a microwave processor to dissolve 3.5g of seaweed Sodium bicarbonate was uniformly dispersed into the solution, and then quickly added 10g of titanium dioxide by-products-ferrous sulfate heptahydrate, 6.5g of anhydrous copper sulfate, stirred evenly and defoamed for 45 minutes, and the obtained gel-state substance filled with abundant voids, It was dried in a vacuum oven at 40° C. for 60 hours, and crushed through a 100-mesh sieve to obtain an adsorbent. After anaerobic fermentation of 8 parts of Salsify ginseng fruits and 3 parts of potassium carnate, 4 parts of quicklime were added thereto, dried and pulverized after shaking evenly, and a powder product was obtained through a 50-mesh sieve, and then mixed with 0...

Embodiment 3

[0048] The advanced treatment agent in this application is obtained according to the following ratio and method: add 8g of sodium bicarbonate to 73g of water, and after it is fully dissolved, disperse 5g of sodium alginate evenly into the solution with a microwave processor, and then add it quickly 8.5g of titanium dioxide by-products - ferrous sulfate heptahydrate, 7.5g of anhydrous copper sulfate, stirred evenly and defoamed for 45 minutes, the obtained gel substance filled with abundant voids was dried in a vacuum oven at 40°C for 60 hours , crushed through a 100-mesh sieve to obtain an adsorbent. After anaerobic fermentation of 12 parts of Salsify ginseng fruit and 4 parts of potassium carnate, 5 parts of quicklime were added thereto, dried and pulverized after shaking evenly, and the powder product was obtained through a 50-mesh sieve, and then mixed with 1.0 parts of alkali-hydrolyzed polyacrylamide powder, 48 parts of adsorbent, 11 parts of hydrated magnesium aluminum h...

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Abstract

The invention relates to a preparation method of an agent for realizing reduction of low-concentration cyanogen-containing coking wastewater sludge. The agent comprises the following components in parts by weight: 40-60 parts of an adsorbent, 10-15 parts of Tragopogon orientalis fruits, 2-5 parts of quick lime, 1-5 parts of potassium cinnamate, 0.5-1 part of alkaline hydrolysis polyacrylamide powder, 10-15 parts of hydrated magnesium aluminum hydroxide carbonate and 7-15 parts of zinc acetate. According to the invention, the agent can realize decoloration, chlorine reduction and sludge reduction of low-concentration cyanogen-containing coking wastewater, and has outstanding significance for recycling reclaimed water after coking wastewater treatment, greatly improving the utilization rate of water resources, realizing water saving and emission reduction and reducing the sludge treatment cost; the compound agent is low in cost, stable in property and remarkable in effect; and titanium dioxide by-products, Tragopogon orientalis fruits and the like are reasonably utilized, so that the reutilization of resources is realized.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a decolorization and dechlorination agent for reducing the amount of low-concentration cyanide-containing coking wastewater sludge and a preparation method thereof. Background technique [0002] The operation of the coking plant will discharge a large amount of industrial wastewater, and the design capacity of one coking plant is 4×10 5 The amount of waste water discharged by the coking plant of t / a will exceed 1000t / d. The discharged coking wastewater contains a wide variety of polycyclic aromatic hydrocarbons and inorganic substances such as cyanide and sulfide, which are highly toxic and difficult to treat. They not only cause serious pollution to the environment, but also directly threaten human health. They are relatively difficult to biodegrade High concentration organic industrial wastewater. The treatment of coking wastewater has always been a research hotspot a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/52C02F1/56B01J20/04B01J20/24B01J20/22C02F101/18C02F101/10C02F101/32C02F101/12
CPCC02F1/288C02F1/5281C02F1/5236C02F1/56B01J20/045B01J20/24B01J20/226C02F2303/06C02F2101/18C02F2101/101C02F2101/327C02F2101/12
Inventor 李红孙辉胡文军陶贵立张宇王坤鹏陈奇张冲
Owner 鞍钢栗田(鞍山)水处理有限公司
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