家庭污水中有机污染物的光化学氧化模型

IF 0.5 4区环境科学与生态学 Q4 ENGINEERING, ENVIRONMENTAL

Environment Protection Engineering Pub Date : 2020-01-01 DOI:10.37190/epe200107

A. Bielski

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引用次数: 0

摘要

对某小户生活污水的混凝处理进行了研究。介绍了过氧化氢与紫外线(h2o2 /UV)联合氧化有机化合物的过程。采用不同初始COD和TOC浓度的灰水进行h2o2 /UV工艺。工艺参数为:过氧化氢用量0.5 ~ 4.0 kg h2o2 / m3, UV (254 nm)光照强度75.5 W/ m2，照射时间- 1 H。氧化效率在15% ~ 98%之间变化较大，COD值越高，氧化效率越低。每公斤COD的平均过氧化氢消耗量w = 12.2 g h2o2 /g o2 COD，而每TOC的平均过氧化氢消耗量w = 69.0 g h2o2 /g c。实验使人们能够建立凝血和氧化动力学的数学模型。模型表明，在初始COD = 859 g O 2 /m 3、混凝剂投加量为100 g Al 3+ /m 3、过氧化氢投加量为4 kg H 2 O 2 /m 3、紫外照射时间为3 H时，COD可降低98.4%。

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Photochemical oxidation model of organic pollutants in greywater from a small household

The treatment of coagulated greywater from a small household was investigated. The processes of oxidation of organic compounds with hydrogen peroxide combined with ultraviolet radiation (H 2 O 2 /UV) was described. Greywater with various initial COD and TOC concentrations was used in the H 2 O 2 /UV process. The process parameters were hydrogen peroxide doses 0.5–4.0 kg H 2 O 2 /m 3 , UV (254 nm) light intensity 75.5 W/m 2 and irradiation time – 1 h. The oxidation efficiency varied broadly from 15 to 98% and higher COD values corresponded to lower oxidation efficiencies. The average hydrogen peroxide consumption per kg of COD w was = 12.2 g H 2 O 2 /g O 2 COD, while per TOC it was w ′ = 69.0 g H 2 O 2 /g C. The experiments enabled one to developed mathematical models for coagulation and oxidation kinetics. The models showed that at the initial COD = 859 g O 2 /m 3 , the coagulant dose of 100 g Al 3+ /m 3 , the hydrogen peroxide dose of 4 kg H 2 O 2 /m 3 and the UV irradiation time of 3 h it is possible to decrease the COD by 98.4%.

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来源期刊

Environment Protection Engineering 环境科学-工程：环境

CiteScore

0.80

自引率

0.00%

发文量

审稿时长

12 months

期刊介绍： Water purification, wastewater treatment, water reuse, solid waste disposal, gas emission abatement, systems of water and air pollution control, soil remediation.