Residential water treatment and recycle system

Patent metadata

Field	Value
Publication number	US-11396464-B2
Application number	US-202117153968-A
Country	US
Kind code	B2
Filing date	Jan 21, 2021
Priority date	Sep 11, 2019
Publication date	Jul 26, 2022
Grant date	Jul 26, 2022

Abstract

Water treatment structures may have at least a first geotextile fabric layer; a second geotextile fabric layer; a third geotextile fabric layer; a first filler layer with plastic particles, arranged between the first and second geotextile fabric layers; and a second filler layer with plastic particles, arranged between the second and third geotextile fabric layers, wherein the geotextile fabric layers and the filler layers are within a housing, and wherein the structure is configured such that contaminated water proceeds sequentially through the first geotextile fabric layer, the first filler layer, the second geotextile fabric layer, the second filler layer, and the third geotextile fabric layer. Methods of treating wastewater may involve passing wastewater, after optional oxygenating and pre-filtering, through such alternating layers of geotextile, preferably nonwoven, and polymer particles.

First claim

The invention claimed is:

1. A residential water treatment system, comprising:
a waste water treatment structure,
a septic tank and/or a solids separation device upstream and in fluid communication with the water treatment structure, and
a discharge tank downstream and in fluid communication with the waste water treatment structure;
wherein the waste water treatment structure comprises
a first geotextile fabric layer;
a second geotextile fabric layer;
a third geotextile fabric layer;
a first filler layer comprising plastic particles, arranged between the first and second geotextile fabric layers; and
a second filler layer comprising plastic particles, arranged between the second and third geotextile fabric layers, and
an aeration tank under the first second and third fabric layers and the first and second filler layers,
wherein the first, second, and/or third geotextile fabric layer comprises at least 75 wt. %, relative to total fabric layer weight, of a nonwoven fabric comprising at least 75 wt. %, relative to total nonwoven fabric weight, of polypropylene or polyethylene terephthalate,
wherein the aeration tank, geotextile fabric layers and the filler layers are vertically stacked within a housing, and
wherein the waste water treatment structure is configured such that contaminated water proceeds sequentially through the aeration tank, the first geotextile fabric layer, the first filler layer, the second geotextile fabric layer, the second filler layer, and the third geotextile fabric layer.

2. The residential water treatment system of claim 1 , further comprising:
a fourth geotextile fabric layer; and
a third filler layer comprising plastic particles, arranged between the third and fourth geotextile fabric layers.

3. The residential water treatment system of claim 1 , wherein at least 90 wt. % of the plastic particles are solid plastic.

4. The residential water treatment system of claim 1 , wherein the plastic particles comprise at least 50 wt. % recycled polymer, relative to total particle weight.

5. The residential water treatment system of claim 1 , wherein the filler layers are packed with the plastic particles, such that the geotextile fabric layers require no further structural support within the housing.

6. The residential water treatment system of claim 1 , wherein the first, second, and/or third geotextile fabric layer, independently has a thickness in a range of from 1 to 10 mm,
and/or
wherein the plastic particles having an average largest dimension in a range of from 5 to 60 mm.

7. The residential water treatment system of claim 1 , further comprising
a first separate space, separated by a barrier from the fabric layers and the filler layers, configured to allow an oxygenation of the contaminated water.

8. The residential water treatment system of claim 1 , further comprising:
a second separate space, separated by a barrier from the fabric layers and the filler layers, configured to collect effluent downstream of the water treatment structure.

9. The residential water treatment system of claim 1 , further comprising:
a recycle configured to feed effluent from downstream of the water treatment structure to a point upstream of the water treatment structure.

Assignees

• Univ Imam Abdulrahman Bin Faisal

Inventors

• Yaman Cevat
• Aga Omer

Classifications

• C02F3/101

  Arranged-type packing, e.g. stacks, arrays · CPC title

• C02F3/103

  Textile-type packing · CPC title

• C02F3/288

  comprising septic tanks combined with a filter · CPC title

• C02F3/302

  Nitrification and denitrification treatment (C02F3/308 takes precedence) · CPC title

• C02F3/104

  Granular carriers · CPC title