Compound water treatment agent as well as preparation method and application thereof

Abstract

The invention provides a compound water treatment agent which is prepared from the following components in parts by weight: 0.1-5 parts of hydroxyapatite, 40-65 parts of natural zeolite, 1-10 parts of quartz, 1-10 parts of albite, 1-10 parts of illite, 10-40 parts of attapulgite and 0.1-5 parts of sepiolite. The invention further provides a preparation method and an application of the compound water treatment agent. The compound water treatment agent provided by the invention has the advantages of low cost, large specific surface area, high activity, high dispersity and high treatment efficiency.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a composite water treatment agent, and also relates to a preparation method and application of the composite water treatment agent. Background technique [0002] At present, water pollution has become one of the most important problems of urban environment in our country. Rivers and lakes across the country are generally polluted to varying degrees, especially in the middle and lower reaches of large and medium-sized cities. Urban rivers are an important part of my country's water environment. Due to the discharge of industrial wastewater and urban domestic sewage, urban rivers are seriously polluted and eutrophication is common. According to statistics, by the beginning of the 20th century, there was almost no complete natural river in the world, and the severe damage and degradation of urban rivers has been recognized as a global ecological environment problem. It c...

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Problems solved by technology

The physical method often treats the symptoms but not the root cause, and the aeration and reoxygenation technology and the sediment dredging technology all have the disadvantage of large investment, and do not have the ability to control pollution on a large scale, and the final treatment of the polluted sediment removed in the sediment dredging is also a problem. It is a difficult problem; the chemical method mainly uses various chemical agents, such as adding chemical agents to kill algae, adding iron salts, etc. to promote the precipitation of phosphorus (chemical phosphorus fixation), etc. Although chemical methods can temporarily improve water quality, they will cause Secondary pollution; Biological method is a main body repair technology with good development prospects. It has low treatment cost, no impact on the environment, and can degrade pollution to the maximum extent. Difficult to promote technology

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