Method for restoration of black and odorous water in small watershed

A black and odorous water body and repair method technology, applied in chemical instruments and methods, water/sewage treatment, adsorption water/sewage treatment, etc., can solve problems such as adverse effects of biological growth, difficult long-term sustainable application, and secondary pollution of the environment. Achieve the effect of realizing solid waste recycling, not easy to rebound, and strong adsorption and phosphorus removal ability

Inactive Publication Date: 2017-09-15
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the aforementioned chemical treatment method has the following problems: 1) the chemical agents used in the chemical treatment will cause secondary pollution to the environment, and whether it will change the ecological environment and cause adverse effects on biological growth needs further research; 2) many When the chemical treatment method is used to remove black and odor-causing pollutants in black and odorous water bodies, the short-term effect is good, but the black and odor are easy to rebound, resulting in high treatment costs, and it is difficult to continue to apply for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1) Dry the diatomite raw ore at a temperature of about 100°C, grind it finely, pass it through a 100-mesh sieve, remove large particles of impurities, and store it airtight for later use;

[0034] 2) Weigh 30 g of the above-mentioned dried diatomite raw soil, and add 50 mL of H2O with a mass concentration of 20%. 2 SO 4 After soaking for 24 hours, put it in a water bath, and put it in a water bath at 80°C for 60 minutes, stirring constantly;

[0035] 3) Filter the diatomite after pickling, wash with deionized water until neutral, dry at 100°C, pulverize, grind, pass through a 100-mesh sieve, and store in an airtight manner for later use;

[0036] 4) Add 30 g of the above filtered and dried diatomite to 40 mL of ferric nitrate solution with a mass concentration of 30%, ultrasonically oscillate for 3 hours, age for 3 hours, transfer to an oven at 100°C for 6 hours, and dry to obtain modified diatomite ;

[0037] 5) The mechanically ground steel slag with a particle siz...

Embodiment 2

[0044]1) Dry the diatomite raw ore at a temperature of about 100°C, grind it finely, pass it through a 100-mesh sieve, remove large particles of impurities, and store it airtight for later use;

[0045] 2) Weigh 25g of dried diatomite raw soil, add 60mL of 25% H 2 SO 4 After soaking for 24 hours, put it in a water bath, and put it in a water bath at 90°C for 60 minutes, stirring constantly;

[0046] 3) Filter the above pickled diatomaceous earth, wash with deionized water until neutral, dry at 120°C, pulverize, grind, pass through a 100-mesh sieve, and store in an airtight manner for later use;

[0047] 4) Add 40mL of ferric nitrate solution with a mass concentration of 25% to the above-mentioned filtered and dried diatomite, ultrasonically oscillate for 3 hours, age for 3 hours, and transfer to a 100°C oven for 6 hours until drying;

[0048] 5) The mechanically ground steel slag with a particle size of 50um to 80um, passed through a 200-mesh sieve, and stored in an airtight...

Embodiment 3

[0055] 1) Dry the diatomite raw ore at a temperature of about 100°C, grind it finely, pass it through a 100-mesh sieve, remove large particles of impurities, and store it airtight for later use;

[0056] 2) Weigh 10 g of the above-mentioned dried diatomite raw soil, add 50 mL of 10% H 2 SO 4 After soaking for 24 hours, put it in a water bath, and put it in a water bath at 80°C for 60 minutes, stirring constantly;

[0057] 3) Filter the diatomite after pickling, wash with deionized water until neutral, dry at 100°C, pulverize, grind, pass through a 100-mesh sieve, and store in an airtight manner for later use;

[0058] 4) Add 10 g of the above filtered and dried diatomite to 50 mL of ferric nitrate solution with a mass concentration of 40%, ultrasonically oscillate for 3 hours, age for 3 hours, transfer to an oven at 100°C for 6 hours, and dry to obtain modified diatomite ;

[0059] 5) The mechanically ground steel slag with a particle size of 50um to 80um, passed through a ...

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Abstract

The invention discloses a method for restoration of black and odorous water in small watershed. The method comprises 1) taking diatomite, steel slag and attapulgite and respectively modifying them to obtain modified diatomite, steel slag and attapulgite, 2) uniformly mixing the modified diatomite, steel slag and attapulgite according to a weight ratio of 6 to 12: 2: 2 to 5 and then carrying out granulation to obtain a composite adsorption material, and 3) adding the composite adsorption material into black and odorous water to adsorb and remove blackening and odorous pollutants in the black and odorous water, wherein a use ratio of the composite adsorption material is 5-15 g/L. The composite adsorption material can adsorb the blackening and odorous pollutants in the black and odorous water, has good treatment effects, has an NH3-N removal rate of 50% or more, reduces re-pollution, and can be used for a long time. The composite adsorption material reduces a cost and has the advantages of solid waste recycling, energy saving and environmental protection.

Description

technical field [0001] The invention relates to wastewater pretreatment technology, in particular to a method for repairing black and odorous water bodies in small watersheds. Background technique [0002] Black and odorous water is an extreme phenomenon of water pollution. At present, black and odorous water has become one of the common problems in the urban water environment of our country. The problem of black and odorous water is mainly caused by the metabolism of algae and bacteria in the water and the excessive discharge of pollutants into the water by humans. In recent years, with the rapid development of my country's economy, the increasing scale of cities, the increasing shortage of environmental infrastructure, the continuous increase of sewage discharge, a large number of pollutants into the river, the chemical oxygen demand (COD), nitrogen, phosphorus, sulfur in water The concentration of other pollutants exceeds the standard, the water body of the river is serio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12C02F1/28B01J20/30
CPCB01J20/0229B01J20/12B01J2220/42C02F1/281C02F2103/007
Inventor 刘璞韩斌吴高明张垒刘尚超康凌晨
Owner 武汉钢铁有限公司
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