It is impossible to negate the churning of wastewater from various processes though you might take several steps to minimize its amount. There are three wastewater classifications including yellow, grey and black water.
Blackwater comes from dishwashers, food preparation sinks, and toilet fixtures while greywater originates from bathroom sinks and other non-toilet fixtures and contains no urine or feces. Yellow water denotes wastewater primarily comprising urine from urinals.
Blackwater is highly contaminated and can only be used for irrigation after its specialized and lengthy recycling processes. Grey water systems in NZ, on the other hand, can treat this wastewater class and guarantee you purified water safe for human consumption.
Natural wastewater treatments are the ideal choice for municipalities looking for effective treatment solutions for their water. One of the treatment solutions in natural treatment is phytodepuration. This technique replicates the natural process of purification in a controlled environment.
It comprises artificial deep basins with inert material and aquatic plants which reproduce the natural purification process. The following are some of the phytodepuration systems used for greywater recycling.
Superficial Streams with Free Water Surfaces
These are basins with elongated shapes whose depths vary based on the treatment level needed and the macrophytes used. The water is first treated using primary sedimentation and grid filtration to get rid of large particles and for the reduction of the solid particles’ concentration.
In superficial streams with free water surfaces, the upper layers are aerobic while the deeper ones are anaerobic. Wastewater treatment in these systems is achieved through a combination of biological, chemical and physical factors.
Superficial Streams with Flooding Macrophytes
These have depths of 0.1–1m, and their bottom is covered with materials which promote the growth of aquatic plants. The basin’s surface is in contact with ambient air, and this allows the death of bacteria using solar radiation in the upper layers of the basin. Floating macrophytes at the bottom of these systems increase their purification efficiency since the plants and solar radiation will purify water.
Subsurface Systems
These are the most common phytodepuration systems comprising depths of 0.2–0.8m based on the types of macrophytes. They include inert filling materials which support the growth of aquatic plants.
The purification efficiency of subsurface phytodeputration systems is almost constant throughout since their medium will avert high thermal excursion. Unfortunately, the solar radiation in these systems is absent, and the air-oxygen exchange is blocked.
Sub Superficial Systems
Here, wastewater will be uniformly distributed throughout a basin trough. Wastewater will be fed continuously and passed through a filter medium made of constant-sized inert material.
Ammonia volatilization, denitrification, biological and filtration processes are the ones used for wastewater treatments in horizontal and vertical sub superficial systems.
If you are looking for the economical choice for your area’s greywater treatment, the above phytodepuration processes are currently your best choice. Since they use no chemicals, you are also assured of a chemical-free output that has no adverse effects for animals and humans.
The maintenance of the basins includes their cleaning, macrophyte trimming, bank damage reparation, hydro level checking, and floating vegetation removal.