只有自己能够帮助自己 » Only you can help yourself 开始停留时间 » Start retention time 剩余20%在形成批量生产能力后付清。 » The remaining 20% paid after the mass production capability.
During the start-upprocess, the solidsofsewage sludgeaccumulatedcontinuouslyinASBRandkept longer solidretentiontime (SRT), helpful toenhance the treatmentefficiency.