Now artificial marshes are being planted to further cleanse the effluent from sewage treatment plants ... of the Cedar Rapids Garden Club volunteered to buy and plant a wetland garden.

Industries, especially the food & beverage and pharmaceutical industries, are making heavy investments in anaerobic wastewater treatment plants to produce renewable energy while reducing waste.

Industries, especially the food & beverage and pharmaceutical industries, are making heavy investments in anaerobic wastewater treatment plants to produce renewable energy while reducing waste. In ...