Sewage treatment is a crucial aspect of environmental protection projects. It requires proper planning and implementation to ensure its effectiveness. To improve the quality of sewage treatment, a treatment mode of pre-treatment, primary, secondary, and tertiary linkage is established based on the current status of sewage pollution. The joint application of various technologies is used to achieve sound sewage treatment effects. As industry technicians, it is essential to grasp the critical points of sewage treatment accurately, operate reasonably, optimize the technology, and improve its feasibility as the industry develops.Wuxi Yosun Environmental Protection Equipment Co.,Ltd
This case study introduces the Tarim Ethylene Ethane Project of Dushanzi Petrochemical. The treatment of ethylene waste alkali liquid used the high-efficiency dissolved air flotation produced by our factory as a pretreatment to remove the oil substances entrained in the waste alkali liquid, and good results were achieved.
This project case introduces that the wastewater discharged by HANGZHOU ELECTROCHEMICAL NEW MATERIAL CO., LTD. during the production of PVC raw materials also contains a small amount of PVC fine particles. After the wastewater is pH-adjusted, coagulated, and flocculated, the fine particles are aggregated into larger flocs and recycled using high-efficiency dissolved air flotation, achieving good results.
In this case, Jiangsu Fengmang Compound Material sewage treatment project, we used the high-efficiency dissolved air flotation produced by our factory to remove most of the suspended impurities, and the effluent was sent to biochemical treatment, achieving good results.
This case introduces the Jiangning Science Park river sewage treatment project, which uses our factory's high-efficiency dissolved air flotation to treat river sewage. This equipment removes more than 90% of suspended solids and total phosphorus in the water body, and can reduce the COD value at the same time. After comprehensive treatment, it meets the fourth category of surface water environmental quality standards. Good results have been achieved.
The organic wastewater generated during the preparation and treatment of PCB circuit boards contains a lot of nickel. The chemical precipitation method balances the water quality and quantity of the nickel-containing wastewater, then passes through a pH adjustment tank with a pH value of about 3~4. Fenton reagent is added to the oxidation tank to convert the hypophosphite in the nickel-containing wastewater into orthophosphate to complete the wastewater decomposition. The wastewater is then introduced into an alkalization tank, and an aqueous solution of calcium hydroxide is added to generate nickel hydroxide and calcium phosphate precipitates. A polymer flocculant is added, and precipitation is carried out using a high-efficiency inclined plate sedimentation tank.
