Acclimation and culture device for halotolerant bacteria in salt-containing wastewater and using method of acclimation and culture device

Abstract

The invention discloses an acclimation and culture device for halotolerant bacteria in salt-containing wastewater and a using method of the acclimation and culture device. The device comprises an acclimation zone and a culture zone which are connected through a pipeline, wherein the acclimation zone comprises an anaerobic / anoxic zone, an aerobic zone and an anoxic zone which are communicated in sequence; the culture zone comprises an anaerobic culture zone, an aerobic culture zone and an anoxic culture zone which are not communicated with one another; the aerobic zone is internally provided with a first treatment zone and a second treatment zone which are connected in parallel; the initial end of the anaerobic / anoxic zone is connected with a water inlet pipe, and the anaerobic / anoxic zone, the aerobic zone and the anoxic zone are connected with drain pipes; a first slow-release filler is arranged in each of the first treatment zone and the second treatment zone; and a second slow-release filler is arranged in the anoxic zone. The device is not provided with a sedimentation tank, a sludge backflow device or a stirring device, and is simple in structure, low in equipment cost and operation electric charge, not prone to being damaged and easy to operate.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a device for acclimating and cultivating salt-tolerant bacteria in saline wastewater and a method for using it. Background technique [0002] In the production process of chemical industry, pharmacy and fuel, the wastewater produced not only contains high concentration of organic matter, but also contains high concentration of salt substances. When the physical and chemical method is used to treat this kind of wastewater, it will be found that this method has a large investment, high operating costs, and it is difficult to achieve the expected purification effect. When biological methods are used to treat this type of wastewater, the effect is not good because the high concentration of salt substances has an inhibitory effect on microorganisms; so the domestication and screening of halophilic bacteria or halophilic bacteria suitable for saline wastewater is s...

AI Technical Summary

Problems solved by technology

When the physical and chemical method is used to treat this kind of wastewater, it will be found that the method has a large investment, high operating costs, and it is difficult to achieve the expected purification effect.

When biological methods are used to treat this type of wastewater, the effect is not good because the high concentration of salt substances has an inhibitory effect on microorganisms; so the domestication and screening of halophilic bacteria or halophilic bacteria suitable for saline wastewater is such The core problem of sewage biochemical treatment

[0003] However, the salt-tolerant microorganisms that have been successfully domesticated and screened are all sensitive bacteria. When the salinity of the saline wastewater influent fluctuates, the activity of the bacteria will be greatly affected. Therefore, it is necessary to maintain the salinity of the water body during the operation of the saline wastewater. However, due to various reasons, the influent salinity of many projects in actual projects varies widely, making it difficult for the biochemical system of saline wastewater to operate stably

[0004] At present, there are two main schemes for the biological treatment of high-salt wastewater: one is to cultivate activated sludge suitable for specific water quality through long-term domestication of activated sludge in the treatment process, and then carry out biological treatment, but this kind of sludge cultivation The method has a long cultivation cycle and general adaptability to water quality fluctuations; the second is to add exogenous salt-tolerant microorganisms during the treatment process. This method also has the function of maintaining the stable operation of the biochemical section, but this method needs a certain period of time The long-term dosing of internal strains, the adaptability of salt-tolerant microorganisms added from external sources to the corresponding sewage may not be suitable, the domestication and screening period is long, and a certain amount of time is required to adapt to fluctuations in water quality

Images