Emergency handling process for sudden burst of raw material alga

Abstract

The emergency treatment process for material water with water bloom includes the following steps: 1. throwing chlorine dioxide in the amount of 0.5-5.0 mg / l for pre-oxidation; 2. adding active carbon powder in 5-50 mg / l for adsorption; 3. adding flocculant polyferric aluminum chloride to react, and filtering after precipitation; and 4. sterilizing with chlorine in 2.5-3.5 mg / l. The process has excellent algae, algal poison and arene eliminating capacity, ideal permanganate index eliminating effect, simple technological process and low cost, and is suitable for emergency treatment for material water with water bloom.

Description

(1) Technical field [0001] The invention relates to an algae emergency treatment process, which is used for the emergency treatment when the raw material water algae in the urban water supply industry explodes suddenly. (2) Background technology [0002] At present, due to a large number of untreated point source and non-point source pollutants entering the surface water body, the eutrophication of the water body is becoming more and more serious, and the overgrowth of algae leads to a sharp increase in algae and their metabolites in the water source, which is critical for the safe operation of water plants. There is a relatively large impact, which leads to the decline of urban water supply water quality and poses a potential threat to the health of users. [0003] The traditional raw material water purification process is generally coagulation-sedimentation-filtration-disinfection. This process has poor treatment effect on algae and their metabolites in water. Although coa...

AI Technical Summary

Problems solved by technology

[0002] At present, due to a large number of untreated point source and non-point source pollutants entering the surface water body, the eutrophication of the water body is becoming more and more serious, and the overgrowth of algae leads to a sharp increase in algae and their metabolites in the water source, which is critical for the safe operation of the water plant. It has a relatively large impact, leading to a decline in the quality of urban water supply and a potential threat to the health of users

[0003] The traditional raw material water purification process is generally coagulation-sedimentation-filtration-disinfection. This process has poor treatment effect on algae and their metabolites in water. Although coagulation can remove some algae, the destruction of algae leads to more Intracellular substances enter the water, which aggravates the water pollution. In the emergency situation of high incidence of algae, the shortcomings of the conventional treatment process are even more exposed.

The current emergency treatment process to deal with the high incidence of algae requires high-efficiency purification equipment, a large site, and a large amount of funds. The pre-chlorination process usually used has limited oxidation capacity, poor emergency algae removal efficiency, and will produce "three causes" (carcinogenic Chlorinated disinfection by-products

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