Inorganic composite water purifying agent for quickly removing COD (Chemical Oxygen Demand) and preparation method of inorganic composite water purifying agent

Abstract

The invention discloses an inorganic composite water purifying agent for quickly removing COD (Chemical Oxygen Demand). The inorganic composite water purifying agent is prepared from the following raw materials in parts by weight: 450 to 750 parts of ferrous sulfate, 80 to 120 parts of bentonite, 20 to 50 parts of sulfuric acid, 20 to 50 parts of sodium carbonate and 5 to 10 parts of carbon black. The inorganic composite water purifying agent is prepared by the following steps of weighing the raw materials according to a formula, and mixing to obtain a mixed material; adding water which is 5 percent of the weight of the mixed material; uniformly stirring and then feeding into a ball mill mixer for mixing and crushing; then enabling the mixed material to enter a reaction still and reacting for 4 hours to obtain a mixed liquid, namely the water purifying agent. A selected medicinal composition has the characteristics of quickness, strong effect and broad spectrum activity. The inorganic composite water purifying agent has the remarkable advantages of significant effect of removing pollutants such as COD / SS (Suspended Solid), short coagulation time, no poison and harm, low aluminum, low price and the like.

Description

technical field [0001] The invention relates to the field of chemical preparations, in particular to an inorganic composite water purifier for removing COD in sewage. Background technique [0002] According to my country's 13th Five-Year Environmental Plan, controlling water pollution, protecting water resources, maintaining ecological balance and sustainable development have become the top priorities of economic development. The current discharge standard for urban sewage treatment will be further raised to Grade A+. Therefore, the existing urban and industrial sewage treatment facilities must be upgraded. [0003] Many scientific and technological personnel and environmental protection units have found in the research that there is not much room for further biochemical treatment of tail water discharged from urban and industrial sewage treatment facilities. However, if the above task indicators are solved, these two methods are complicated in process and huge in investmen...

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Problems solved by technology

[0003] Many scientific and technological personnel and environmental protection units have found in the research that there is not much room for further biochemical treatment of tail water discharged from urban and industrial sewage treatment facilities. However, if the above task indicators are solved, these two methods are complicated in process and huge in investment, and are not suitable for most sewage treatment plants, let alone solve the problem of land occupation of existing sewage treatment facilities. not enough problems