Ferrate pre-oxidation-bioactivity filter combined water treatment method

Abstract

The invention provides a ferrate pre-oxidation-bioactivity filter combined water treatment method, which comprises the following steps: firstly, adding ferrate to pre-oxidize a micro-polluted water body, wherein the adding quantity of the ferrate is controlled between 0.3mg / L and 1.5mg / L, and the pre-oxidation time is 5-30min; and enabling pre-oxidized water to flow in from the top end of bioactivity filter and flows out from the bottom end, wherein the upper layer of the bioactivity of the bioactivity filter is an active carbon layer with height of 60-80cm, and the lower layer is a quartz sand layer, and the filtration speed is 6-9m / h. the invention includes various procedures of chemical oxidization, absorption, biological oxidization and the like, is applied to the feedwater treatment without changing the traditional process and increasing large equipment, presents better organic pollutants removal property, and is a conventional pollution-removal strengthening technology which is suitable to national conditions of China and can economically improve the water quality of drink water.

Description

(1) Technical field [0001] The invention relates to a treatment method, which is a water treatment method suitable for the transformation of old water plants. (2) Background technology [0002] Affected by the discharge of industrial wastewater and domestic sewage, the quality of drinking water sources in my country has gradually deteriorated. The pollution components in water are mainly organic matter containing natural organic and inorganic components. Among them, many trace organic pollutants are the most difficult to remove, which is very harmful to human health. In addition, the increase in the content of ammonia nitrogen and other pollutants in water also seriously affects Pollution removal efficiency of water treatment processes. [0003] Activated carbon has been widely used in the advanced treatment of drinking water due to its well-developed pore structure, which can effectively adsorb organic matter. However, activated carbon has limited adsorption capacity and ...

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Problems solved by technology

However, there are certain problems in the actual application of the ozone oxidation process: (1) the investment in the ozone oxidation process equipment is large, the operating cost is relatively high, and the maintenance and management are complicated; (2) the high concentration of ozone will cause harm to the human body, and the ozone Exhaust gas needs to be strictly treated; (3) When the raw water contains bromide, it will form bromate harmful to human body under the oxidation of ozone. Bromate is classified as 2B level by the International Agency for Research on Cancer (higher carcinogenic possibility ), these deficiencies limit the application of the ozone process

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