The selection of technical solutions for integrated wastewater treatment and reuse is very important. The selection principles and requirements are as follows:
First, it is very important to scientifically determine the influent water quality and influent volume of the sewage treatment plant. It is the basis for the correct selection of the wastewater treatment process.
Second, a comprehensive analysis of character and individuality comprehensive wastewater steel enterprises.
Third, it is necessary to consider the comprehensive balance of quantity and quality of water used in the whole plant or process, such as water temperature, water volume, suspended solids and salt.
Fourth, in order to realize the reuse of treated sewage for the production of supplementary water, in the advanced treatment of recycled water, according to the quality of sewage water, the treatment process of reducing the temporary hardening and the processing technology such as filtration and sterilization should be selected.
5. In the whole plant or regional large circulating water system, in order to maintain the high recycling rate of water, it is necessary to consider the key factors of the overall balance of water quality. Therefore, it is necessary to prevent salt enrichment in water and choose in wastewater reuse. Whether there is a desalination system or facility.
Sixth, it is necessary to pay attention to the choice of quality and quantity of drugs.
Seventh, to ensure water quality monitoring and operation control. The drainage of steel companies has its commonalities. The main pollutants in the effluent are suspended solids, oil, etc., the content, alkalinity and hardness are higher, the general BOD5/COD ratio is lower, the biodegradability is poor, and the biochemical treatment process can be ignored.
Therefore, it is advisable to use physical-chemical water treatment such as pretreatment, coagulation softening, pH adjustment and filtration for this type of sewage. The drainage of steel companies also has its own personality. Due to different distribution areas and differences in production processes, the quality of sewage is the same and varies, and the composition and content of various pollutants vary widely.
Therefore, for each plant, the treatment and reuse processes used are not exactly the same, and should be reasonably selected and adjusted according to the wastewater quality of each plant. The wastewater quality of iron and steel enterprises is complex, generally including the turbid circulation drainage of each process and the production wastewater of the auxiliary workshop. In the combined drainage pipeline, it usually includes domestic sewage and rainwater. Therefore, when selecting a comprehensive sewage treatment plan, the comprehensive water discharge and the drainage water quality and water volume of each enterprise should be collected and verified scientifically and reasonably. Otherwise, the integrated sewage treatment process does not combine the water quality and quantity of the production wastewater, and it is difficult to meet the actual requirements, resulting in difficulties in the operation of the treatment plant or the suspension of production and transformation, which often occurs in practice. Therefore, a reasonable determination of the influent water quality and quantity of the treatment plant is the basis of comprehensive wastewater treatment.
Z Purline Roll Forming Machine
Z Purline Roll Forming Machine
Z purline formed by Z purline forming machine,advantages of well compressive strength and flatness; automatioc measureing, cutting and punching; high-level of
automation and conveniently installation.
It can be used in the main body stress structure of the large and medium-size enterprises civil construction, like the plant, warehouse, locomotive shed, hangar, exhibition building, theatre, stadiums, roofing load-bearing load and wall surface support of the arbour.Material of rollers: Shaft Bearing steel(Quenching)
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