Most of the N and P in household sewage is from human waste.

On-site septic systems are a common method of treating household sewage.

Constructed wetlands can be useful for biofiltration and treatment of typical household sewage.

Rural residents depend on on-site septic systems to treat household sewage.

Such connections frequently result in the discharge of industrial process waste or household sewage into rivers and streams without proper treatment.

Then, if you release less, you can earn more, save and sell that "unused household sewage credit" to the city, or to your neighbor.

Household sewage is the largest point source of N and P to the Canadian environment and will likely continue to be so.

On-site treatment and disposal of wastewater (septic or household sewage treatment systems)

Sewage treatment is the process of removing contaminants from wastewater, primarily from household sewage.

The lake is no longer the mecca it was for nude bathing, being heavily polluted from the household sewage dumped into it.

It is not simply "treated household sewage," nor is it "inadvertently" contaminated with industrial wastes.

The river is heavily polluted by industrial and household sewage to the point that it has been called as 'the world's dirtiest river' by some.

As a predecessor to modern sewage treatment systems, household sewage was collected from towns and cities and transported to nearby farm lands.

Whenever there is significant rainfall on the island of Montreal, household sewage is mixed with the city street rainwater and discharged untreated into the river.

Industrial, farm and household sewage from the mainland, experts say, has profoundly changed the lagoon biology and allowed the large, tough weeds to get the upper hand.

Their first project, the design of a wetland to treat household sewage from a hotel a few miles from Drumnadrochit and Loch Ness, exemplifies this belief.

Large methane digester tanks huddle in a corner of the Hunts' spacious garage for another research project on treating household sewage and using plants to filter the effluent.

Cowater Alaska Inc provides a flush tank and haul system to remote Alaskan communities that previously did not have a safe disposal system for household sewage.)

As the deleterious consequences of raw sewage discharge became apparent, trunk sewers were built to divert the household sewage in combined sewers to sewage treatment plants.

It supported the improvement and expansion of the water supply of Bobo-Dioulasso as well as the collection and treatment of industrial and household sewage in the same city.

The biogas used as fuel for the Neo is produced from a combination of household sewage and livestock waste, broken down and fermented, company spokesman Kenji Fujita said.

In addition to household sewage collected in sewers, septic sewage systems, urban runoff and combined sewer overflows are also major sources of nutrients to ground and surface waters.

Arruda and Thomé found this species in both clean and polluted freshwater environments (polluted by household sewage), as well as on both natural and artificial substrates.

It was a dark night, and the fellow was thrown over the south wall of the city where he landed on the gehenna rubbish dump with the household sewage and rotting vegetables.

Two months ago the company established an affiliate, POSCO Environment and Energy, to transform household sewage into "refuse-derived fuel," a complementary coal fuel suitable for generating electricity.