Water treatment apparatus
US4693814A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 4, 1984 |
| Grant date | Sep 15, 1987 |
| Priority date | — |
| Expiry date | Sep 4, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/42
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A water treatment system including a pair of tank assemblies 110, 112 interconnected by a valve module 114 for controlling the communication of water to be treated to an on-line tank and the regeneration of an exhausted tank. Each tank assembly includes a compartment containing a water softening resing 125 and a compartment centering an iron filter media. The valve module is connected to a regeneration solution reservoir 150 by brine conduits 164, 220. A pumping assembly 192 automatically transfers a predetermined amount of a supplemental regenerant fluid from a well 168 into the regeneration solution reservoir at the conclusion of a regeneration cycle. The pumping assembly includes upper and lower chambers 194a, 196a communicating with the supplemental regenerant fluid reservoir 168 and brine supply conduits 164, 220 respectively. The lower chamber 196a contracts and expands in response to the depressurization and pressurization of the brine conduits and produces attendant expansion and contraction in the upper chamber 194a. The upper chamber draws a predetermined amount of regenerant fluid from the reservoir 168 and injects the fluid into the regeneration solution reservoir 150. …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.