天然气行业污水零排放新型工艺
New Technology for Wastewater Zero Discharge in Natural Gas Industry
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- 引用格式:
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张永红,连伟,何化.天然气行业污水零排放新型工艺[J].天然气与石油,2016,34(1):0.doi:
Zhang Yonghong, Lian Wei, He Hua.New Technology for Wastewater Zero Discharge in Natural Gas Industry[J].Natural Gas and Oil,2016,34(1):0.doi:
- DOI:
- 作者:
- 张永红 连伟 何化
Zhang Yonghong, Lian Wei, He Hua
- 作者单位:
- 中国石油集团工程设计有限责任公司西南分公司
China Petroleum Engineering Co., Ltd. Southwest Company
- 关键词:
- 零排放；生化处理；电渗析；蒸发结晶；废水处理
Zero discharge; Bio-chemical treatment; Electro osmosis; Evaporation and crystallization; Waste water Treatment
- 摘要:
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为减轻天然气行业污水最终处置造成的环境压力，设计实施了一套针对天然气行业的污水零排放新型工艺，通过污水分质处理原则，达到分质回用要求。该工艺由生化处理和提浓处理对全厂各种废水进行回用处理，处理后回用水CODcr、BOD5和电导率明显下降，平均值分别达到 50 mg/L、14 mg/L和388 μs/cm，达到回用水水质标准。由生化处理和提浓处理产生的残液最终进入蒸发结晶装置，做最后处置，将水与固体彻底分离，生成的产品水电导率平均值只有3525 μs/cm，达到循环水补水要求。采用该污水零排放新型工艺最终实现了无污水外排。
In order to release environmental pressure resulting from waste water treatment and discharging in gas industry, a new process is applied in engineering design of waste water treatment in gas treatment plant and the requirement of reuse and zero discharge of the treated waste water can be met through the principle of different water quality with different treating process. This process includes a set of bio-chemical treatment unit and a set of concentrated treatment unit, CODcr, BOD5 and conductivity of waste water from the treatment units decrease obviously, its average values reach 50 mg/L, 14 mg/L and 388 µ s/cm respectively and its main parameters have met the requirements of water recycle using quality. The tail liquid from bio-chemical treatment unit and concentrated treatment unit will be led into evaporation pool for evaporation and crystallization unit and its liquid and solid has been separated thoroughly, the average conductivity of product water can be as low as 35.25 µ s/cm, which can reach the quality requirement of distilled water. Application of the new waste water treatment process can realize the goal of waste water zero discharge.
