Project Description: This project is the MBR membrane replacement project of the electroplating park. In response to the national energy conservation and emission reduction policy, the entire electroplating wastewater treatment workshop will be fully renovated. The treated water production meets the national electroplating wastewater discharge standards, and the effluent reaches RO. Influent requirements.
The 6500m3/d wastewater treatment project of the industrial park, the design of integrated wastewater influent water quality is as follows:
| Name | Unit | Index value |
| CODcr | mg/l | ≤400 |
| pH | － | 6.5～8.5 |
| TN- | mg/l | ≤30 |
| TP | mg/l | ≤2 |
| NH3-N | mg/l | ≤40 |
| Vegetable oil | mg/l | ≤50 |
| Vegetable oil | mg/l | ≤3 |
After the wastewater is treated, it can reach “Urban Wastewater Recycling and Urban Miscellaneous Water Quality” (GB/T-18920-2002); “Urban Wastewater Recycling and Industrial Water Quality” (GB/T-19923-2005); The specific indicators of effluent are as follows:
| Name | Unit | Index value |
| SS | mg/l | ≤5 |
| Turbidity - | NTU | ≤1 |
Brief introduction to the project process: split + adjustment tank + single treatment + coagulation sedimentation + MBR membrane bioreactor + ultrafiltration + reverse osmosis. The production chain of each electroplating wastewater enters the shunt regulation and physical and chemical treatment. After physicochemical treatment, it enters the coagulation sedimentation tank to coagulate and precipitate. After sedimentation, the produced water enters the biochemical pool for biochemical treatment. The biochemical production water flows into the MBR membrane pool for deep biochemistry and filtration, so that the effluent reaches the RO inflow standard.
Project Engineering Picture: MBR Pool in the System
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