Sinochem Xiaoyi Chemical Industry Park
Project scale: The designed scale of the activated carbon adsorption system in this project is 84m³/h (2000m³/d), among which the discharged high-concentration brine from the high-concentration brine treatment section of Sinochem in Xiaoyi is approximately 70.83m³/h, the desorption liquid wastewater is about 12.5m³/h, and the diluted sodium sulfate chilled mother liquor is 4.5m³/h.
Project Name: Xiaoyi Economic Development Zone Wastewater Treatment Plant Salt Crystallization Zero Discharge Project
Project Owner: Baowu Water Technology Co., Ltd.
Project Contractor: Saiding Engineering Co., Ltd.
Application Industry: Wastewater Treatment in the Coking Industry - Activated Carbon Adsorption and Regeneration Device
Project Address: Construction site of the zero discharge project on the southeast side of Xiaoyi Economic Development Zone Wastewater Treatment Plant
Project Duration: Delivery to the site within 50 days of the issuance of the bid-winning notice, and completion after 6 months.
Project Scale: The designed capacity of the activated carbon adsorption system in this project is 84 m³/h (2000 m³/d), of which approximately 70.83 m³/h of high-concentration brine is discharged from the Xiaoyi Zhonghua high-concentration brine treatment section, approximately 12.5 m³/h of desorption wastewater, and 4.5 m³/h of sodium sulfate freezing mother liquor (after dilution);
Project Execution Indicators:
(1) Water quality requirements for the influent and effluent of the activated carbon adsorption system in the biochemical system
| Serial number | Project | Unit | concentrated salt water | DJM Desorption Solution | Sodium sulfate cryogenic stock solution (after dilution) | |||
| Water ingress | Effluent | Water ingress | Effluent | Water ingress | Effluent | |||
| 1 | Water volume | m3/li | 70.83 | 70.83 | 12.5 | 12.5 | 4.5 | 4.5 |
| 2 | Water temperature | ℃ | 15-40 | 25〜40 | ||||
| 3 | pH | 6-9 | 6-9 | |||||
| 4 | Suspended matter | mg/L | <70 | <5 | <70 | <5 | <20 | <5 |
| 5 | Chemical oxygen demand | mg/L | <550 | <80 | *350 | <500 | <860 | <150 |
| 6 | TOC | mg/L | <206 | <30 | <1629 | <187.3 | <322 | <56.2 |
| 7 | Ammonia nitrogen | mg/L | <5 | <5 | ||||
| 8 | TDS | mg/L | <65000 | <25000 | 80559 | |||
| 9 | Electrical conductivity | rS/c | <100000 | <35000 | ||||
(2) Activated carbon regeneration system
The regeneration temperature of the multi-stage furnace is controlled at ≤950℃, the temperature of the secondary furnace is controlled at ≤900℃, and the activated carbon regeneration capacity is ≥13t/d.
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