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Greywater Systems With Geomembrane

Name: China Greywater Systems With Geomembrane Manufacturers, Suppliers and Factory - Low Price - Ruiheng Building Materials
Brand: Ruiheng
SKU: 280279599

Using geomembranes in greywater systems is a common and highly effective practice, crucial for environmental protection and water reuse. Providing a primary barrier to prevent uncontrolled seepage and protect groundwater.

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Description

Products Description

Using geomembranes in greywater systems is a common and highly effective practice, crucial for environmental protection and water reuse. Their core function remains the same as for spirulina ponds: providing a primary barrier to prevent uncontrolled seepage and protect groundwater.

different thicknesses of Geomembranes Test		Unit	Standard	Test Frequency	RH75	RH10	RH15	RH20	RH30
Mechanical Properties	Thickness	mm	D5199	per roll	0.75	1.00	1.50	2.00	3.00
	Density	g/cc	D1505/D792	90,000 kg	0.94
	Tensile Properties		D 6693
	· yield strength	kN/m	Type IV	9,000 kg	11	15	22	29	44
	· break strength	kN/m			20	27	40	53	80
	· yield elongation	%			12	12	12	12	12
	· break elongation	%			700	700	700	700	700
	Tear Resistance	N	D 1004	20,000 kg	93	125	187	249	374
	Puncture Resistance	N	D 4833	20,000 kg	240	320	480	640	96

However, specific considerations differ due to the composition of greywater.

Why use geomembranes for greywater collection?

Greywater (from showers, bathtubs, sinks, and laundry) is not potable water, but it is also less polluted than sewage (blackwater).

GREYWATER

The primary objectives of using geomembranes

1.Groundwater protection: Preventing nutrients (nitrogen and phosphorus from soaps), surfactants (detergents), and other chemicals from leaching into groundwater aquifers.

2.Regulatory compliance: Most environmental regulations require that any constructed wastewater collection structure have a primary (and sometimes secondary) liner that meets specific hydraulic conductivity standards.

3.Reuse containment: Effectively controlling the flow of water for treatment, storage, and subsequent reuse (e.g., subsurface irrigation, toilet flushing).

4.Prevent soil saturation: Avoid the formation of persistently wet areas that can cause odors, soil instability, or sewage uptake.

Common Applications

1. Lined Constructed Wetland:
Purpose: A shallow, lined pond filled with gravel and wetland plants (such as reeds or rushes) that naturally treats greywater through microbial and plant activity.
Lining: The geomembrane ensures that water flows through the gravel and plant root zones for treatment, rather than seeping untreated into the ground.

2. Greywater Settling/Retention Pond:
Purpose: A tank or pond that allows solids to settle before pumping water to irrigation fields or for further treatment.
Lining: Prevents leakage from the retention pond. Retention ponds are typically buried high-density polyethylene (HDPE) tanks or concrete tanks with a geomembrane lining.

3. Infiltration Pond (Lined for Safety):
Purpose: While traditional infiltration ponds allow water to seep into the soil, lined infiltration ponds can be used for temporary storage or to hold water before pumping it to a designated safe infiltration area, such as a covered pond. Liner purpose: To store water for controlled treatment/reuse, rather than uncontrolled infiltration in unsuitable locations (such as near wells or building foundations).

HDPE (high-density polyethylene) offers excellent chemical resistance to soaps, detergents, and mild acids/bases. It also offers strong UV resistance when exposed to the elements. It is extremely durable and has a long service life. However, it is less flexible and requires specialized welding. It is the preferred choice for most permanent underground graywater systems, such as constructed wetlands and large impoundments.

Installation Notes:
Protection (Geotextile): Non-woven geotextiles must be used both below the geomembrane (as a buffer layer) and above it (usually as a protective layer). This protects the geomembrane from puncture by sharp rocks during backfilling and from potential degradation due to UV exposure.

Using a geomembrane for greywater containment is a best practice for safe and responsible water reuse. It creates a controlled environment where greywater can be treated, stored, or redirected without harming the surrounding ecosystem.