| 1. | Sludge liquor is recirculated in the secondary system .
污泥水回流到二级处理系统。 |
| 2. | Most of the cellulose will settle to produce a sludge .
大部分纤维素沉淀生成污泥。 |
| 3. | Less than 0. 3% of u.s. croplands receive sludge .
03弱的美国农地上施用了污泥。 |
| 4. | Sludge incineration is a frequently employed disposed method .
污泥焚烧也是一种常用的处置方法。 |
| 5. | Sludges forming in the acid interfere with storage and handling .
在酸中形成淤渣，妨碍贮存和运输。 |
| 6. | Over 300 strains of bacteria have been found in activated sludge .
活性污泥中发现有300种以上的细菌。 |
| 7. | Thickening is the usual first step in sludge disposal processing .
污泥处置过程中，浓缩通常是第一道工序。 |
| 8. | Typically these sludges settle rapidly but do not compact very well .
这些污泥一般沉降迅速，但并不很紧密。 |
| 9. | Fluid sludge can be sold to farmers for spreading on their fields .
液态污泥可以出售给农民，洒布在农田里。 |
| 10. | Better methods of dewatering and disposing of these sludges are needed .
需要研究更好的污泥脱水和处置方法。 |
