| 摘要 |
<p>A method of treating waste materials such as farm waste or canal silts comprises preparing means to contain liquid waste such as a bed, trench or container, filling the means with the liquid waste and allowing the waste to settle into a liquid and solid phase. The liquid phase is then removed by either a mechanical means, such as a pump, or by allowing the liquid to be evaporated by the sun or to seep from a permeable holding means. The remaining waste material, with a liquid content of greater than 30%, may then be returned to the land in the form of fertiliser or mulch. A further filtration step may be used to reduce the liquid content of the dewatered slurry utilising a belt filter press and the resulting waste material may be further dried and stored for subsequent use. An apparatus for effecting the separation of waste materials is also disclosed and comprises a container 1, with inlet pipe 3 and outlet pipe 8, separated into two compartments by a baffle 11, and provided with a means 13 to break-up solid matter.</p> |
