Through Haya Karima project for rural areas in various governorates, the current project includes the design of six wastewater treatment plants namely: (i) Mallawy, (ii) Tanouf, (iii) Delga, (iv) Deer Abou Hennes, (v) Al-Sheikh Shebeika, (vi) Nazlet Al-Badraman and (vii) Al-Amiria. These biological treatment plants are planned and designed for ultimate capacities (ranging from 7,500 m3/d to 70,000 m3/d) while phase 1 design documents are issued for capacities ranging from 5,000 m3/d to 40,000 m3/d. Effluent compliance with discharge limits were considered including the need of nutrients removal if required according to the case studied.

Wastewater lreatment Plant (WW1P) for Monshaat Al-Keram in Shebin Al-kanater, Qalyubia Governorate, with a capacity of 10,000 m3/day extendable to 20,000 m3/day in total, including all necessary civil and electromechanical work inside the plant boundaries.
The treatment plant is constructed as a compact system including the following compartments:
• Inlet flow meters
• Inlet quieting chambers
• Pretreatment (fine screens and, grit and grease)
• Biological treatment ASBR (Advanced Sequential Batch Reactor)

• Disk filters
• Disinfection
• Sludge treatment

Al-Khayri sewage treatment plant in Damanhour is considered the largest sewage treatment plant in the Beheira governorate, with a design capacity of 90,000 m3/day as a first stage and 160,000 m3/day as a final stage. This plant treats sewage using a conventional activated sludge system.

The treatment plant with a capacity of 80 thousand m3/day has been established with the active sludge system several years ago, during which it was subjected to phases of operation and discontinuation (outside the scope of the current study). around and inside some basins or units. Therefore, the current project was launched to rehabilitate the treatment lines (up to secondary treatment) at the Kattameya plant, with a capacity of 80,000 m3/day.