Wastewater treatment agent, preparation method thereof and wastewater treatment method

A wastewater treatment agent and wastewater technology, which is applied in the directions of oxidized water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of complex process, poor treatment effect, and difficult control of the treatment process, and achieve good treatment effect and efficiency. high effect

Active Publication Date: 2013-10-16
湖南循安生态环境资源技术有限公司
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Problems solved by technology

[0005] Aiming at the existing problems of complex wastewater treatment process, difficult control of the treatment process, long period and poor treatment effect, the present invention provid

Method used

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  • Wastewater treatment agent, preparation method thereof and wastewater treatment method

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preparation example Construction

[0028] The invention also provides a preparation method of the above-mentioned wastewater treatment agent, which comprises uniformly mixing sodium silicate and ferrate to obtain ferrosilicon copolymer, and mixing hydrogen peroxide and ferrous sulfate to obtain Fenton's reagent.

[0029] The wastewater treatment agent of the present invention is prepared by preparing ferrosilicon copolymer and Fenton's reagent respectively, and is added to wastewater for treatment when used.

[0030] According to the wastewater treatment agent provided by the present invention, in order to better remove ammonia nitrogen and COD in wastewater, preferably, the ferrosilicon copolymer is formed by the polymerization of sodium silicate and ferrate; the sodium silicate and ferrate The molar ratio of salt is 3:1-3. The Fenton reagent includes H 2 o 2 and FeSO 4 ·7H 2 O; the H 2 o 2 with FeSO 4 ·7H 2 The molar ratio of O is 10:1-3.

[0031] According to the wastewater treatment agent provided ...

Embodiment 1

[0038] Wastewater treatment: High ammonia nitrogen and high COD wastewater is produced during the production of hydrazine hydrate. The water quality is pH 12, COD 1458mg / L, ammonia nitrogen 2523mg / L, and water temperature 60°C.

[0039] Preparation of waste water treatment agent by weight: ferrosilicon copolymer 55wt%, sodium silicate (as Na 2 SiO 3 In terms of) and ferrate (in K 2 FeO 4 Calculated) the molar ratio is 3:3; Fenton's reagent 45wt%, hydrogen peroxide (with 100% H 2 o 2 Calculated) and ferrous sulfate (as FeSO 4 ·7H 2 O) The molar ratio is 10:1.

[0040] First add acid to the wastewater to adjust the pH value to 6, and then add the wastewater treatment agent to the wastewater. The amount of the wastewater treatment agent added is: the amount of the wastewater treatment agent added to 1L of wastewater is 0.9kg, stirred and mixed, and the reaction time is After 80 minutes, the treated wastewater A1 was obtained.

Embodiment 2

[0042] Wastewater treatment: High ammonia nitrogen and high COD wastewater is produced during the production of hydrazine hydrate. The water quality is pH 12.5, COD 1259mg / L, ammonia nitrogen 2187mg / L, and water temperature 60°C.

[0043] Preparation of waste water treatment agent by weight: ferrosilicon copolymer 55wt%, sodium silicate (as Na 2 SiO 3 In terms of) and ferrate (in K 2 FeO 4 The molar ratio of the meter) is 3:1; Fenton's reagent 45wt%, hydrogen peroxide (with 100% H 2 o 2 Calculated) and ferrous sulfate (as FeSO 4 ·7H 2 O meter) the molar ratio is 10:3.

[0044] First add acid to the wastewater to adjust the pH value to 7, and then add the wastewater treatment agent to the wastewater. The amount of the wastewater treatment agent added is: the amount of the wastewater treatment agent added to 1L of wastewater is 0.6kg, stirred and mixed, and the reaction time is After 60 minutes, the treated wastewater A2 was obtained.

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Abstract

The invention provides a wastewater treatment agent. The wastewater treatment agent comprises silicon iron copolymer and a Fenton's reagent, wherein when the total weight of the wastewater treatment agent is taken as reference, the content of silicon iron copolymer is 50-70 wt%, and the content of the Fenton's reagent is 30-50 wt%. The invention also provides a preparation method of the wastewater treatment agent and a wastewater treatment method adopting the wastewater treatment agent. The treatment effect of the wastewater treatment agent is better than that of a wastewater treatment agent in a control group, and particularly, the ammonia nitrogen treatment effect is remarkably optimized. The wastewater treatment method is simple, is short in treatment period and does not generate irritant gases.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and in particular relates to a wastewater treatment agent, a preparation method and a wastewater treatment method. Background technique [0002] Ammonia nitrogen and COD wastewater mainly come from domestic sewage and industrial wastewater. The concentration of ammonia nitrogen and COD in domestic sewage is low, and the discharge requirements can be met through appropriate biochemical treatment. The concentration of ammonia nitrogen and COD in industrial wastewater is high and comes from a wide range of sources. The ammonia nitrogen content of wastewater discharged from different production plants varies greatly. High-concentration ammonia nitrogen wastewater mainly comes from petrochemical, non-ferrous metal chemical metallurgy, fertilizer, fine chemical, pharmaceutical chemical, meat processing and breeding industries. Ammonia nitrogen is an important factor causing water eutrophication,...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/72
Inventor 陈建华乐晓兵廖军岳廷希高波
Owner 湖南循安生态环境资源技术有限公司
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