CN101643268A - Water treatment method for killing red worms with ultrasound-ozone - Google Patents

Abstract

The invention discloses a water treatment method for killing red worms with ultrasound-ozone, which is designed in order to solve the technical problems of low red worm death rate, increasing contentof carcinogen and mutagenic compounds such as disinfection by-products and the like in effluent and difficult insurance on safety water supply of a water works in the current water treatment method ofkilling red worms with a prechlorination process. The method is realized by the following steps: pre-introducing ozone to raw water before conventional processing; simultaneously utilizing ultrasonicwave with the frequency of 50HZ and the power of 120W to act on the raw water for 10-20min, thus all red worms in the treated raw water are killed and are completely and effectively removed in sequent coagulation, precipitation and filter water supply treatment processes. In addition, the introducing amount of ozone in raw water is 1-2mg per liter. The invention has the beneficial effects that the technique can effectively control the red worms in water, thereby ensuring the qualification of water quality index of effluent water. Compared with the current prechlorination process, the invention improves the security of water quality of water supply, and reduces the generation of three genicity compounds such as high-concentration chloride or trihalomethane and the like, thus effectively controlling the red worms and having better effects on the aspect of removing micropollutants.

Description

Ultrasonic-Ozone Water Treatment Method for Killing Red Worms

Technical field:

The invention relates to a water treatment method, in particular to a water treatment method for killing bloodworms in water so as to be effectively removed by ultrasonic-ozone.

Background technique:

The climate in southern cities in my country is warm and humid all year round, which is suitable for insect breeding. When surface water bodies are generally polluted, bloodworms are easy to breed in water sources and enter the water supply system, which has become a problem that plagues the domestic water supply industry. The appearance of red worms in user water not only violates the sanitary standards for drinking water, but more importantly, most red worms are the intermediate hosts of pathogenic organisms in water, thus becoming an important medium for spreading diseases and bringing great harm to people's water safety. a great threat. In response to the above problems, most water plants use pre-chlorination technology to control, but at 10mg/L chlorine dosage, after 30 minutes of exposure, bloodworms only have a 28.9% mortality rate, and there are the following disadvantages at the same time: First, the use of pre-chlorination The process increases the disinfection by-products in the effluent, such as the content of carcinogenic and mutagenic substances such as trihalomethanes and haloacetic acids, which affects the safety of drinking water; on the other hand, this process cannot completely and effectively remove red worms. A small amount of red worms can still be detected in the effluent from the filter, which makes it difficult to guarantee the safe water supply of the water plant.

Invention content:

In order to solve the problem of using the prechlorination process to control the present invention, in the case of 10mg/L chlorine dosage, the red worm has only 28.9% mortality rate after contacting for 30 minutes, and there are disinfection by-products in the effluent, such as three halides. The content of carcinogenic and mutagenic substances such as methane and haloacetic acid has affected the safety of drinking water and cannot completely and effectively remove red worms. A small amount of red worms can still be detected in the effluent of the filter, making the water To solve the technical problem that it is difficult to guarantee the safe water supply of the plant, an efficient and safe ultrasonic-ozone water treatment method for killing red worms is provided. The amount of ozone in 1 liter of raw water is 1-2mg. At the same time, ultrasonic waves with a frequency of 50Hz are used. The ultrasonic power is 120W and the action time is 10-20min. , Filtration and water treatment process to be thoroughly and effectively removed.

Beneficial effects of the present invention: the technology can effectively control the red worms in the water, ensure the water quality index of the factory water is qualified, and has the incomparable superiority of the existing technology. Compared with the current pre-chlorination process, the water treatment technology using ultrasonic-ozone has further improved the safety of water supply and reduced the formation of high-concentration chlorides or trihalomethanes. The operation is safe and convenient. The invention not only can effectively control bloodworms, but also has good effect in removing micro-pollutants.

Ultrasonic degradation of organic pollutants in water is a water treatment technology with great development potential and has a good application prospect.

Description of drawings:

Figure 1 is a schematic diagram of an experimental device for killing red worms by ultrasonic-ozone.

Fig. 2 is a schematic diagram of the effect of killing red worms by the method of the present invention.

Detailed ways:

The water treatment method of ultrasonic-ozone killing red worms is realized through the following steps: first, pre-pass ozone into the raw water before conventional treatment, the amount of ozone per liter of raw water is 1-2mg, and the use frequency is 50Hz at the same time Ultrasound, the ultrasonic power is 120W, and the action time is 10-20min.

Embodiment 1: in conjunction with accompanying drawing 1, Fig. 2, ultrasonic-ozone kills the water treatment method of red worm, realizes by following steps: at first by the reaction before the conventional treatment to the ozone generator 2 that is connected with oxygen bottle 1 The raw water 4 in the device 3 is pre-passed with ozone, and the amount of ozone per liter of raw water is 1 mg. At the same time, an ultrasonic probe 5 with a frequency of 50 Hz is used to radiate ultrasonic waves into the raw water. The ultrasonic power is 120 W and the action time is 20 minutes. Bloodworms in the treated raw water all died. And in the follow-up coagulation, sedimentation, filtration feed water treatment process to be thoroughly and effectively removed.

Embodiment 2: in conjunction with accompanying drawing 1, Fig. 2, the water treatment method that ultrasonic-ozone kills red worm is realized by following steps: first by the reaction before the conventional treatment to the ozone generator 2 that is connected with oxygen bottle 1 The raw water 4 in the device 3 is pre-passed with ozone, and the amount of ozone per liter of raw water is 2 mg. At the same time, an ultrasonic probe 5 with a frequency of 50 Hz is used to radiate ultrasonic waves into the raw water. The ultrasonic power is 120 W and the action time is 10 minutes. Bloodworms in the treated raw water all died. And in the follow-up coagulation, sedimentation, filtration feed water treatment process to be thoroughly and effectively removed.

Oxygen cylinder 1, ozone generator 2 and ultrasonic probe 5 among the embodiment 1-2 are commercially available products, adopting oxygen cylinder 1 in the test is 40 liters (Shenyang Yechi Gas Co., Ltd.), and ozone generator 2 is CHYF -3A ozone generator (Hangzhou Rongxin Electronic Equipment Co., Ltd.), ultrasonic probe 5 is a 88-1 type probe type ultrasonic generator (Institute of Acoustics, Chinese Academy of Sciences).

Claims (3)

1. The water treatment method of ultrasonic-ozone killing red worms is realized through the following steps: first, pre-pass ozone into the raw water before conventional treatment, and the amount of ozone per liter of raw water is 1-2mg, and the frequency of use at the same time The ultrasonic wave is 50Hz, the ultrasonic power is 120W, and the action time is 10-20min. 2. The ultrasonic-ozone water treatment method for killing red worms according to claim 1, characterized in that: the amount of ozone per liter of raw water is 1 mg, and the ultrasonic wave with a frequency of 50 Hz is used at the same time, and the ultrasonic power is 120 W. The time is 20 minutes. 3. The ultrasonic-ozone water treatment method for killing red worms according to claim 1, characterized in that: the amount of ozone per liter of raw water is 2 mg, and the ultrasonic frequency is 50 Hz, and the ultrasonic power is 120 W. The time is 10 minutes.

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