The selection of the wastewater treatment process in Inner Mongolia should comprehensively consider various factors, and the technical and economic comparison of multiple schemes can be used to draw conclusions, including: wastewater water quality, wastewater treatment degree, construction and operation costs, engineering ease of construction, local natural And social conditions, the amount of sewage and secondary pollution.
Wastewater quality: The quality of domestic sewage is generally relatively stable. General treatment methods include acidification, aerobic biological treatment, and disinfection. The industrial wastewater should be reasonably selected based on the specific water quality conditions. In particular, it is necessary to point out that for the treatment of wastewater by aerobic biological treatment process, pay attention to the biodegradability of wastewater. BOD5 / COD> 0.3 is usually required. If the requirements cannot be met, anaerobic biological hydrolysis and acidification can be considered to improve The biodegradability of wastewater, or consider the use of non-biological treatment of physical or chemical methods. Welcome attention, environmental friendly bee!
Sewage treatment degree: This is the main basis for the selection of sewage treatment process. In principle, the degree of sewage treatment in Inner Mongolia depends on the water quality characteristics of the sewage, the fate of the treated water, and the self-purification capacity of the water flowing into the sewage. But at present, the determination of the degree of sewage treatment is mainly based on the requirements of the relevant national legal systems and technical policies. Generally, the environmental management department controls the discharge concentration of sewage according to the Comprehensive Sewage Discharge Standard and related industry discharge standards. Some regions with higher levels of economic development have also set stricter local discharge standards. Therefore, no matter what kind of sewage needs to be treated, no matter what kind of treatment technology and treatment degree is adopted, it should be based on and based on the effluent of the treatment system being able to meet the standards. Prevent and treat water environment pollution in accordance with the requirements of laws, regulations and policies.
Construction and operation costs: When considering construction and operation costs, the precondition is that the treated water meets the water quality standards. Under this premise, the technological process with low construction and operating costs should be taken seriously. In addition, reducing floor space is also an important measure to reduce construction costs.
Ease of engineering construction: The ease of engineering construction is also one of the influencing factors in choosing a process. In Inner Mongolia, if the groundwater level is high and the geological conditions are poor, it is not suitable to choose a treatment structure with large depth and difficult construction.
Local natural and social conditions: The local topography, climate and other natural conditions also have a certain impact on the selection of wastewater treatment processes. If the local climate is cold, after adopting appropriate technical measures, a process that can operate normally in the low temperature season and ensure that the water quality is up to standard should be adopted. Local social conditions such as raw materials, water resources and power supply are also one of the factors that should be considered in process selection.
Water quantity of sewage: In addition to water quality, water quantity of sewage is also one of the influencing factors. Welcome to pay attention to environmentally friendly bees. For wastewater with large changes in water volume and water quality, first consider adopting a process with strong anti-shock load capacity, or consider setting up buffer tanks and other buffer equipment to minimize adverse effects.
Secondary pollution: Should pay attention to the problem of secondary pollution during sewage treatment. For example, the wastewater of pharmaceutical factories contains a large amount of organic substances (such as benzene, toluene, bromine, etc.). Organic waste gas will be emitted during the aeration process, which will affect the surrounding atmospheric environment. Recycling, cyanide will be contained in the tail gas of the cooling tower, which will cause pollution to the atmosphere. In the treatment of Pomegranate wastewater from Inner Mongolia Sewage Treatment Pesticide Factory, Pomegranate will be degraded by the alkali method. If lime is used as the alkalizing agent, the sludge produced will Causes secondary pollution; sludge disposal is a key consideration when printing and dyeing or dye factory wastewater treatment.