The project is aimed at solving the problem of disposal of wastewater from the Ayalon Region, located between Jerusalem and Tel Aviv, and with a forecast year 1995 population of 210,000. Another objective is to reclaim the wastewater, thereby augmenting the country's water resources potential.
Various alternatives were investigated and technoeconomic studies carried out, providing separate solutions for the northern and southern towns.
According to this, wastewater from the northern towns, with flows ranging from 4.4 to 7.8 million cu.m/year, would be conveyed via pipelines and pumped to the collection network, whence they would be sent to the Dan Region treatment plant.
Wastewater from the southern towns, with estimated flows of 8 to 11.7 million cu.m/year, would be treated and stored for reuse in irrigation in agricultural areas located between Ramla and Latrum.
The system includes pipes, pumping stations, concrete storage reservoirs, wastewater treatment plants, and earth reservoirs for seasonal storage. Each town would have its own treatment plant, comprising oxidation, aeration and anaerobic lagoons. Following treatment, the effluents would be conveyed to seasonal reservoirs, where a total storage volume of about 4.4 million cu. misrequired .
The existing Na'an reservoir, with a volume of 0.7 million cu.m, would be integrated into the system.
An additional reservoir of 3.7 million cu.m capacity would be constructed in the Latrun Valley.
The effluents are envisaged for use in irrigation of cotton, citrus, avocados, vineyards and industrial crops in the Ramla and Latrun areas .