Wastewater Treatment Plant Process Poster

Create a horizontal infographic poster explaining the working principles of a wastewater treatment plant. The design style is industrial, modern, and high-contrast, utilizing a color palette of deep red, black, white, and teal/blue for water elements.

**Layout & Text Elements:**
1.  **Top Left/Center (Headline):** Large, bold, distressed red Chinese characters "污水处理厂" (Wastewater Treatment Plant) spanning across the top. Below it, large black bold text "工作原理" (Working Principles). Smaller black text underneath: "从进水、分离、生化反应到净化出水" (From influent, separation, biochemical reaction to purified effluent).
2.  **Left Sidebar:** Vertical layout with small text blocks. Top block: "让每一滴污水重回自然" (Let every drop of sewage return to nature), "水的下一站是更洁净的未来" (Water's next stop is a cleaner future), English text "CLEANER WATER BRIGHTER TOMORROW". Bottom block (red background): "处理改变为了更好的水环境" (Treatment changes for a better water environment), English text "CLEAN CYCLE HEALTHY CITIES".
3.  **Right Side (Background Image):** A large photographic collage showing an aerial view of circular clarifier tanks filled with blue-green water, connected by pipes and walkways. Overlay text on the right: "从污水到清水" (From sewage to clear water), "连接城市与更健康的生活" (Connecting cities with healthier lives), "FOR A CLEANER TOMORROW", "水循环 城市运行 与自然共生" (Water cycle, city operation, symbiosis with nature), "净化 让城市更有生命力" (Purification makes cities more vibrant), "CLEAN WATER STRONGER CITIES".
4.  **Bottom Center (Process Diagram):** A schematic cross-section diagram showing the flow of water through different stages. Arrows indicate direction from left to right. Labels above the sections: "格栅 / 沉砂" (Screening/Grit Chamber), "初沉" (Primary Sedimentation), "生化反应" (Biochemical Reaction - depicted with bubbles), "二沉" (Secondary Sedimentation). Labels at ends: "进水" (Influent) on left, "出水" (Effluent) on right.
5.  **Bottom Right:** Small text block: "更干净的水 更宜居的城市 更可持续的明天" (Cleaner water, more livable cities, more sustainable tomorrow), English text "CLEANER WATER HEALTHIER CITIES A BRIGHTER TOMORROW".
6.  **Center Red Box:** A small red square containing white text: "看不见的工程 支撑看得见的美好生活" (Invisible engineering supports visible good life), English text "INFRASTRUCTURE FOR A HEALTHIER TOMORROW".

**Visual Style Details:**
*   Use a grainy texture overlay on the entire image to give it a printed paper feel.
*   The typography should be heavy sans-serif for Chinese characters.
*   The water in the photos and diagrams should be a distinct teal/cyan color against the grayscale/red/black background.