Sustainable water management needs ecological clarifying of sewage

 

World wide long-term supply of clean drinking water is connected with the reliable cleaning of wastewater. In populous areas huge central purification plants and sewers are built, but for sparsely populated rural regions it makes much more sense and is economically better to clean the wastewater locally instead of pumping it over far distances. For this purpose natural clarifying plants, the so-called „constructed wetlands“ have been developed. The Janisch & Schulz systems offer reliable purification, advantageous and economically priced.

 

Constructed wetlands fulfil these criteria:

 

● The construction materials are available everywhere

   and do not have to be imported.

● The technology itself is easy to maintain.

● As the system is nature-oriented longevity is proven.

● Expenses for investment and maintenance amount

   about the half compared with conventional purification

   systems.

 

First attempts to clean water with constructed wetlands in Germany took place in the early 70's. Meanwhile more than 50,000 plants provide reliable performance.

 

 

Fields of application

Constructed wetlands require 1,5 up to 3 m² of area for every inhabitant connected. But not only where the area necessary is available at low cost the wetland can be operated economically. For communities or companies it mostly is the better choice to purify domestic wastewater from households, camping sites and hotel plants; likewise the wastewater from cities and municipalities; and sewage of commercial origin (e.g. slaughterhouses, dairies, tannery, etc.) can be cleaned reliably. 

              COD              30 - 80 mg/l

              BOD5              5 - 25 mg/l

              N total             5 - 18 mg/l

              P total            1 -   2 mg/l

  

Structure and function mode

In a first process step solids are extracted from the wastewater in septic tanks. The wastewater running now off is piped by pumps or with a mechanical construction into the wetland field. Depending on installation type the wastewater flows through the constructed wetland in horizontal or vertical direction. The field consists of sands and gravel in various granulations, endemic plants like helophytes grow on its surface (and, by the way, offer a beautiful sight). The roots penetrate the gravel-sand-bedding, ventilates it and keeps it hydraulically permeable.

 

 

1. Branch                                           4. Septic Tank

2. Rain spillway basin                       5. Constructed wetland     

3. Technic station                             6. Downspout

 

 

 

Principle

Wastewater consists of water with organic suspended soils such as soap, depending on the origin of the pollution. As soon as the dirty water is flowing through the substrate of the facility, a "biological lawn" forms on the surface of the granulate material which is the medium for rapidly colonizing micro-organisms. Carbon and nitrogen in the slop serve the microbes as nutrients. They are eliminated in aerobic and anaerobic processes, while phosphates are removed by sorption. The water coming off the constructed wetland can not be drunk. It is almost clean, but not pure enough for consumption. But it can be utilized for domestic and industrial use as well as for watering the garden.

  



Janisch & Schulz

 was founded by the engineers J. Janisch & Ch. Schulz. They have planned and built hundreds of constructed wetlands since 1990.

The purification plants are adapted individually as the case arises, depending on the location and the kind of wastewater to be cleaned.

J&S Ecosis Islas Canarias S.L. offer constructed wetlands and other water purifying systems in different scopes.

● Built ready to use in general contractorship;

● Designed, planned, timed and supervised including

   local site management;

● Do-it-yourself construction packages including

   planning, delivery of material and supervision.

 

 

    mail@js-ecosis.com

 

 

 

 

Textfeld: El Topo 34??E-38613 La Escalona / Vilaflor??Tenerife Sur????Tel/Fax (+34) 922 72 58 94??Móbil (+34) 617 00 00 54??www.lithos.org??

 


J&S Eco-Sistemas for wastewater treatment are products from

 

Ingenieurgesellschaft Janisch & Schulz mbH

Bahnhofstr. 15 ● D-35516 Münzenberg-Gambach

Germany

Tel. (+49) 60 33 74 52 90 ● Fax (+49) 60 33 74 52 911

www.pflanzenklaeranlagen.de