US 7,547,397 B1 · Particle-accelerating deposition and separation apparatus and method for turbid water

Abstract

A pretreatment particle-accelerating deposition and separation apparatus and method for purifying turbid raw water, which based on the theories of laminar flow requirement, particle-accelerating vertical deposition and water horizontal movement, separates water molecules from turbidity particles in a laminar flow region (with a Reynolds number lower than 1,000). By accelerating the velocity of high-turbidity raw water and the turbidity particles, the particles settle vertically because of inertia. Thus, the turbidity particles can be removed physically from the raw water and clean water can be collected at different heights of the apparatus while concentrated turbid water can be released to a nearby body of water after appropriate treatments. Thereby, turbid water can be purified for the subsequent coagulation, sedimentation and filtration processes in traditional water treatment plants.

Claims20

Dependent claims

A particle-accelerating deposition and separation apparatus comprising:

a housing, containing:
a hollow cylinder, provided with a plurality of clean water collecting pipes disposed on a peripheral wall thereof at various heights and equipped with at least one silt-removing outlet on a bottom thereof;
a top plate, containing an opening therein and disposed on a top inner side of said hollow cylinder;
and
a bottom plate, containing an opening therein and disposed at a bottom end of said hollow cylinder;
a hollow conical flow accelerator, disposed in said housing and containing a water inlet with a first diameter, a water outlet with a second diameter smaller than the first diameter, and a diameter-reducing portion between said water inlet and said water outlet, said water inlet being connected to said opening of said top plate of said housing;
and
a particle condenser, disposed in said opening of said bottom plate of said housing and under said water outlet of said hollow conical flow accelerator, said particle condenser containing a receiving entrance connected with said opening of said bottom plate of said housing.

5 more elements

A particle-accelerating deposition and separation method for turbid water under a laminar flow condition comprising the following steps:

(a) providing a housing comprising:
a hollow cylinder provided with a plurality of clean water collecting pipes disposed on a peripheral wall thereof at various heights and equipped with at least one silt-removing outlet on a bottom thereof, a top plate containing an opening therein and disposed on a top inner side of said hollow cylinder, and a bottom plate containing an opening therein and disposed at a bottom end of said hollow cylinder;
(b) providing a hollow conical flow accelerator disposed in said housing and containing a water inlet with a first diameter, a water outlet with a second diameter smaller than the first diameter, and a diameter-reducing portion between said water inlet and said water outlet, said water inlet being connected to said opening of said top plate of said housing;
(c) providing a particle condenser disposed in said opening of said bottom plate of said housing and under said water outlet of said hollow conical flow accelerator, said particle condenser containing a receiving entrance connected with said opening of said bottom plate of said housing;
(d) defining an area between said water outlet of said hollow conical flow accelerator and said receiving entrance of said particle condenser as a particle-water separation area;
(e) guiding turbid water into said water inlet of said hollow conical flow accelerator;
(f) collecting silt from said silt-removing outlet of said hollow cylinder accumulated on a bottom edge of said housing;
(g) receiving particles through said receiving entrance of said particle condenser, said particles being accelerated and expelled from said water outlet of said hollow conical flow accelerator and subsequently departing from said particle-water separation area;
and
(h) collecting clean water from said plurality of clean water collecting pipes of said hollow cylinder, said clean water being separated from said particles and laterally flowing out of said particle-water separation area.

7 more elements

Dependencies are inferred from the claim text.

Particle-accelerating deposition and separation apparatus and method for turbid water

Life of this patent

Particle-accelerating deposition and separation apparatus and method for turbid water

Life of this patent

Abstract

Claims20