冲洗池

Currently, in the prior backflush process for treating a micropollution underground water source by utilizing a biological filter tank, yielding water often reflows to a sedimentation tank.

目前利用生物滤池处理微污染地下水源传统的反冲洗工艺出水一般是直接回流至沉淀池。

The method comprises the following steps: according to the raw water quality, the change of the number of bacteria inside the sedimentation tank and the water quality of the backflush yielding water, the backflush yielding water in the sedimentation tank is collected and deposited in a backflush phase of a working period; supernatant fluid containing mass active bacteria and soluble nutrient elements reflow to the sedimentation tank; total or partial sediment containing soluble nutrient elements in an underlayer reflow to the sedimentation tank and is reutilized by mass microorganisms in the sedimentation tank, thereby replenishing the nutrient substrate needed for microorganism growth, proliferation and metabolism under the condition of the low nutrition substrate, and maintaining the ecological stability in the sedimentation tank.

该方法根据原水水质和生物滤池内部细菌数量的变化以及反冲洗出水的水质，将生物滤池工作周期中反冲洗阶段的反冲洗出水收集并沉淀，将其含有大量活性细菌和溶解性营养元素的上清液回流至生物滤池，下层含有不溶性营养物质的沉淀全部或部分回流至生物滤池，被生物滤池当中的大量存在的微生物重新利用，从而补充在低营养基质条件下，微生物生长、增殖和新陈代谢所必需的营养基质，维持生物滤池当中的生态稳定。

A process for treating the sludge generated by alumina sewage treating system incldues such steps as pumping the alumina sewage in sand depositing pool then in depositing pool, mixing the bottom sludge, the sewage from sand-water separator, and the regenerated water from filter to obtain backflush water, heating in desilicating heater, washing the secondary red mud to recover Na2O and Al2O3, anjd returning the washing liquid containing Na2O and Al2O3 back to the flow of production of alumina.

本发明公开了一种氧化铝废水处理系统的污泥处置新工艺，它将氧化铝废水先进入沉砂池中进行沉砂处理后才进入沉淀池中，将虹吸泥机从沉淀池中吸出的底流污泥和砂水分离器分离出的污水以及将部分经过滤器过滤后所得的再生水作为反冲洗水一起通过污泥泵送到脱硅加热器中加热得污泥热水，然后将污泥热水用于二赤泥洗涤沉降，以回收赤泥附着的Na2O和Al2O3，将洗涤赤泥后含有Na2O和Al2O3的洗液送到氧化铝生产流程中重新使用。

The different head loss pattern was considered as the reason of that up-flow BAF had a longer operation time than down-flow BAF. Carbonate gravel (3～5mm) filter had a larger porosity and consequently had a longer operation time than that of ceramist filter.

试验中发现，上向流曝气生物滤池运行过程中水头损失呈近线性变化，而下向流曝气生物滤池的水头损失则在接近过滤终点时呈明显的指数式突跃增加，这是导致下向流曝气生物滤池运行周期比较短、反冲洗比较容易的主要原因。

The steps involved are as follows: 1 Clean ultrasonically all component parts with a degreaser in a warm water solution. 2 Rinse with warm water in an ultrasonic bath.

清洗步骤包括如下：1在含有脱脂剂的温水溶液中用超声波清洗所有部件。2在一个超声池内用温水冲洗，再用冷水冲洗。

The steps involved are as follows: 1 Clean ultrasonically all component parts with a degreaser in a warm water solution. 2 Rinse with warm water in an ultrasonic bath. Rinse again in cold water. 3 Put all component parts under black light for inspection of any carbon.

清洗步骤包括如下：1 在含有脱脂剂的温水溶液中用超声波清洗所有部件。2 在一个超声池内用温水冲洗，再用冷水冲洗。3 将所有部件放置在红外线下检查是否有碳。

The study results showed that the air-water backwash was an efficient BAF backwashing method.

试验研究结果表明，气水联合反冲洗可以有效地对曝气生物滤池进行反冲洗。

The backwashing is the key technology of fast-filter.

反冲洗是快滤池的一项关键技术，反冲洗的效果关系到滤床下一个周期的过滤效果。

Nowadays working state is analyzed and test is compared in this paper .An optimal running method in water backwashing and air scour of trickling filter is proposed ,by means of timing to improve technics rules of trickling filter.

本文通过对现有工况的分析和试验对比，通过调速手段改善气水反冲洗滤池的工艺条例，提出了气水反冲洗滤池的优化运行方案。

Based on the study for backwashing technology, the most optimal backwashing strategy was established, on the base of which to compare the effective rule of backwashing on both of BAC filters.

通过研究不同反冲洗方式、冲洗强度对炭池生物量、净水效能等多项指标的影响确定了炭池的最佳反冲洗模式，在此基础上进一步分析比较了反冲洗对两生物活性炭滤池的影响规律。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了