New method for acclimating active sludge resisting high chloride ion wastewater

Abstract

The invention relates to a new method for acclimating active sludge resisting high chloride ion wastewater. Through domestication culture, the active sludge can stably grow in sewage containing chloride ions at the concentration of 20g / L, and can degrade pollutants in the water. A shooting-and-bouncing-ray (SBR) method is adopted in a reaction process, and only one intermittent reaction tank is arranged; and compared with a continuous active sludge method, the new method has the advantages hat: a secondary sedimentation tank and sludge returning equipment are not required to be specially arranged, and capital investment can be saved compared with that of a common active sludge method. The new method also has the advantages of large reaction kinetics, high efficiency, flexible running mode, good denitrification effect and readily available materials. The acclimated sludge is common municipal sludge, readily available and low in price, and the new method is suitable for acclimating sludge in sewage treatment plants of coastal cities and oil fields. The new method effectively overcomes the influence of a high chloride ion adverse factor, and successfully realizes biological treatment of the high chloride ion wastewater.

Description

technical field [0001] The invention relates to a new method for acclimating high chloride ion-resistant wastewater activated sludge. Background technique [0002] With the continuous development of coastal industry and marine transportation, water pollution with seawater as the main carrier is becoming more and more serious. Traditional methods use physical and chemical methods to deal with this type of pollutants, but due to the application of physical and chemical methods, it is easy to cause secondary pollution. In recent years, more scholars have chosen to use biological methods to treat marine sewage. Since there is still a large amount of CL in seawater--- - , CL - It has a strong toxic effect on microorganisms. Because high concentrations of salt will cause rapid changes in the osmotic pressure of microbial cells, resulting in cell rupture or inhibition of bacterial growth, the biological treatment system will be damaged. Therefore, in the current actual sewage tre...

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Problems solved by technology

[0002] With the continuous development of coastal industry and marine transportation, water pollution with seawater as the main carrier is becoming more and more serious. Traditional methods use physical and chemical methods to deal with this type of pollutants, but due to the application of physical and chemical methods, it is easy to cause secondary pollution. In recent years, more scholars have chosen to use biological methods to treat marine sewage

Since there is still a large amount of CL in seawater--- - , CL - It has a strong toxic effect on microorganisms. Because high concentrations of salt will cause rapid changes in the osmotic pressure of microbial cells, resulting in cell rupture or inhibition of bacterial growth, the biological treatment system will be damaged. Therefore, in the current actual sewage treatment project However, it is still relatively difficult to domesticate, cultivate and treat high-salt wastewater sludge, and there is no mature experience for reference.

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