公开(公告)号：US10143130B2

公开(公告)日：2018-12-04

申请号：US15244618

申请日：2016-08-23

Applicant: Netafim Ltd.

Inventor： Dennis Hannaford ,  Todd Rinkenberger

IPC: A01C23/00 ,  A01G25/00 ,  B01F15/00 ,  B01F15/02 ,  A01C23/04

Abstract: Disclosed are methods and apparatus for blending wastewater with fresh water for fertigation of a crop. In one embodiment, the wastewater and the fresh water are blended at a predetermined flow ratio through a blending valve to obtain a blended stream. A logic based controller controls the blending valve to set a predetermined flow ratio according to the electricity conductivity (EC) of the blended water stream. The blending, measuring, and adjusting steps form a feedback loop so as to maintain the blended stream at a target EC value.

公开(公告)号：US10182524B2

公开(公告)日：2019-01-22

申请号：US14834783

申请日：2015-08-25

Applicant: Netafim Ltd.

Inventor： Dennis Hannaford ,  Todd Rinkenberger

IPC: A01C23/00 ,  A01C23/04 ,  A01G25/02 ,  A01G25/00

Abstract: Disclosed are a method and apparatus for blending wastewater with fresh water for fertigation of a crop. In one embodiment, the wastewater and the fresh water are blended at a predetermined flow ratio through a blending valve to obtain a blended stream. A logic based controller controls the blending valve to set a predetermined flow ratio according to the electricity conductivity (EC) of the blended water stream. The blending, measuring and adjusting steps form a feedback loop so as to maintain the blended stream at a target EC value.