Introduction of sewage treatment process in sugarcane molasses factory

Sugarcane molasses factory wastewater is a kind of industrial wastewater with high concentration of organic pollutants, which will cause serious pollution to the environment if not treated properly. In order to reduce the impact on the environment, sugarcane molasses factories must adopt scientific and effective treatment processes to treat wastewater to meet discharge standards.

The process flow of sewage treatment in sugarcane molasses factory is as follows:
Preprocessing
Wastewater enters the pretreatment tank, undergoes physical treatment and preliminary biological treatment. In the pretreatment tank, it first passes through the grille and the grit chamber to remove larger impurities and sediment in the sewage, so as to avoid affecting the subsequent treatment equipment.
Then, the sewage will flow into the anaerobic bioreactor, where preliminary biological treatment is carried out, and some organic substances are converted into biodegradable substances through the action of microorganisms. The main purpose of this preliminary treatment is to reduce the load on subsequent treatment equipment and reduce treatment costs.

Biochemical Treatment
The pretreated wastewater flows into the biochemical treatment tank. Biochemical treatment refers to the process of using microorganisms to degrade pollutants into harmless substances such as water and carbon dioxide. In the biochemical treatment tank, the wastewater is fully contacted with the air, and the microorganisms existing in nature are used to degrade the pollutants. The microorganisms here are mainly divided into two types, one is anaerobic microorganisms, and the other is aerobic microorganisms.
In the process of processing, it is necessary to pay attention to the control of the feed and growth environment of microorganisms to ensure the efficient degradation of microorganisms. At the same time, attention should be paid to controlling the temperature, pH value and oxygen supply in the biochemical pool to ensure microbial activity and degradation efficiency.

Precipitation Treatment
The wastewater after biochemical treatment also needs to be subjected to sedimentation treatment to remove microorganisms, particles and colloidal impurities suspended in the wastewater. Usually, a sedimentation tank is used, using the principle of physical sedimentation, to add a certain amount of coagulant to the wastewater, so that the suspended solids in the wastewater gather into particles, and then settle to the bottom.
The main purpose of sedimentation treatment is to reduce the concentration of suspended solids in water, improve the transparency and stability of wastewater, and provide better conditions for subsequent treatment steps.

Filtration
The wastewater after sedimentation treatment still contains residual substances such as tiny suspended particles, colloids and other microorganisms. Therefore, filtration is required to remove these tiny particles and substances.
Usually, a filter material filter tank is used, and the waste water passes through the filter material layer to remove the residual substances in the water. The filter material layer of the filter tank is usually made of quartz sand, coal and other materials, and the size and shape of the filter material are required to be uniform to achieve good filtration. Effect. The main purpose of filtration treatment is to lower the concentration of suspended solids in the water, make the water more transparent, and meet the requirements of effluent water quality.

Disinfection
The filtered waste water is subjected to final disinfection treatment in the disinfection tank. The purpose of disinfection treatment is to achieve the effect of eliminating germs and ensure the safety of water quality by killing microorganisms such as bacteria and viruses in wastewater.
The disinfectants in the disinfection pool usually use chlorine gas, sodium hypochlorite, ozone and other substances to kill microorganisms such as bacteria and viruses in wastewater through chemical reactions. The wastewater after disinfection treatment meets the discharge standards stipulated by the state and can be safely discharged into the water environment.

Sludge Treatment
The sludge generated during the treatment process needs to be further treated to meet the requirements of harmless treatment. The sludge is generally dehydrated by a filter press, and then disposed of by incineration, landfill, etc.

In general, the treatment process of wastewater from sugarcane molasses factories requires a variety of methods, through multiple steps such as pretreatment, biochemical treatment, sedimentation treatment, filtration treatment and disinfection treatment, to treat the wastewater into water quality that meets the discharge standards, and Harmless disposal of sludge generated during the treatment process. The coordination and cooperation of these process steps can effectively reduce the concentration of pollutants in wastewater and protect the environment.

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