hệ thống xử lý nước thải biogas 3d

Create a semi-realistic 3D model of a pig biogas wastewater treatment system with a rectangular layered tank. Top layer: a long mixing chamber labeled "Trộn", connected to an inlet pipe "Đầu vào", with a simple agitator inside. Left side: a curved vertical pipe system labeled "Cống chắn", with 2–3 connected pipes and valves. Middle layer: a chamber labeled "Nước + gas", with wavy liquid surface and small bubbles rising. Below: a darker sludge layer labeled "Bùn" with dense texture. Bottom: a horizontal sludge channel labeled "Máng bùn (chờ) thừa", slightly sloped. Add arrows showing flow direction from inlet → mixing → water → sludge → bottom channel. Use concrete walls, metal pipes, dirty water and sludge textures. Show cutaway view, isometric angle, soft daylight, clean engineering style.