Processing method for phosphor containing wastewater

A treatment method and technology for wastewater, which can be used in water/sewage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc., and can solve problems such as lowering water pH value and adverse effects of biological treatment.

Active Publication Date: 2008-09-24
溧阳常大技术转移中心有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

However, in the traditional sewage biological treatment process, the addition of iron salt will reduce the pH value of the water. Although the exce

Method used

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  • Processing method for phosphor containing wastewater

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Embodiment 1

[0012] Soak the pulverized 40-mesh volcanic rock powder in water with a pH of 9 and a temperature of 60°C for 3 days, then separate, dry and activate at 105°C for 1 hour to obtain activated volcanic rock; put 30 mg of the treated volcanic rock into 60 mL of phosphate with a concentration of In 40mg / L waste water, stir for 2 hours; precipitate and separate, and the removal rate of phosphate is over 99%.

Embodiment 2

[0014] The pulverized 100-mesh volcanic rock powder was soaked in water with a pH of 7 and a temperature of 40°C for 4 days, separated, dried and activated at 105°C for 1 hour, and the activated volcanic rock was obtained; 1000 mg of the treated volcanic rock was put into 800 mL of In 20mg / L waste water, stir for 3 hours; precipitate and separate, and the removal rate of phosphate is over 99%.

Embodiment 3

[0016] Soak the pulverized 60-mesh volcanic rock powder in water with a pH of 8 and a temperature of 50°C for 4 days, then separate, dry and activate at 105°C for 1 hour to obtain activated volcanic rock; put 400 mg of the treated volcanic rock into 200 mL of phosphate with a concentration of In 30mg / L wastewater, stir for 2.5h; precipitate and separate, and the removal rate of phosphate is over 99%.

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Abstract

The invention discloses a treatment method of phosphoric wastewater, which includes the procedures that: firstly, crushed 40-100mu lave powder or lave grain with grain diameter being 3-4 mm is separated after being dipped into water with pH valve being equal to 7-9 for 3-4 days under the constant temperature being 40-60 DEG C, and is dried in 105 DEG C and is activated for 1 h, so active lave is obtained; secondly, 30-1000 mg of obtained active lave is put in 50-800 ml of phosphoric wastewater, and is mixed for 2-3 h; thirdly, the mixed mixture is settled and separated. The treatment method uses large specific surface area of the lava to activate the surfaces containing various metallic elements under the alkalescency condition, so as to cause the metallic elements to be the hydroxylation for forming activation position points of adsorbing phosphate radical which is easily combined with hydroxide radical to be firmly adsorbed on the surface of the lava, thereby the removal ratio of phosphate radical in wastewater can reach up to more than 99 percent. The adsorbed lava can be used repeatedly after acidizing.

Description

technical field [0001] The invention relates to a treatment method for wastewater containing phosphate ions, and belongs to the technical field of sewage treatment in environmental protection. Background technique [0002] my country's water resources are short, water pollution is becoming more and more serious, and the discharge of wastewater is increasing year by year. The conventional sewage treatment process generally uses a combination of biological and chemical methods to remove phosphorus, but the general biological phosphorus removal method can only remove about 30-40% of phosphorus, and it is difficult to completely remove pollutants such as phosphate radicals, resulting in many rivers and lakes. Eutrophication. Studies have shown that when the concentration of phosphate in the lake reaches 0.03mg / L, it can cause eutrophication. Therefore, phosphorus removal from domestic sewage and industrial wastewater is one of the effective measures to control water eutrophica...

Claims

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Application Information

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IPC IPC(8): C02F1/58C02F1/28
Inventor 马建锋黄文艳李定龙
Owner 溧阳常大技术转移中心有限公司
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