ประกอบด้วยร่องยาวหรือพื้นดินที่เคลื

Long furrows or consists of ground coated or impregnated with a waterproof material below. To prevent water leakage and filters to allow the plants to grow crops and adhesion. Filter may be used as a rock.การที่น้ำเสียไหลผ่านด้านข้างของตัวกรองจะทำให้น้ำเสียถูกบำบัดในระหว่างสัมผัสกับผิวหน้าตัวกรองและส่วนรากของพืชบริเวณใต้ชั้นกรองจะอิ่มตัวด้วยน้ำตลอดเวลา This system is suitable for wastewater with BOD load in the range.Mg / L.

Contains a long Groove or ground coating tinting materials waterproof below. In order to prevent the leakage of water and the filter plant to help make the adhesion and growth of plants. The filter is used, it might be rock. The wastewater flows through the sides of the filter to make the waste water was treated during the facial filters and best filtering layer under the roots of a plant are saturated with water at any time. This system is suitable for waste water owe b o d range. Mg/l.

Includes a long groove or land that is coated or plastered with water resistant materials at the bottom to prevent leakage of the water and the filter to help plant and plant growth can be traction. filter may be used as a stone.The wastewater flows through the side of the filter to make wastewater treatment has been in contact with your skin during the filters and the area under the roots of the plant floor filter is saturated with water at all times. It is suitable for a waste water charges are BOI is in the range.mg/L