Sludge treatment, utilization, and disposal.
D011232:Chemical Precipitation; D004573:Electrolytes; D005374:Filtration; D006358:Hot Temperature; D007220:Industrial Waste; D008722:Methods; D011108:Polymers; D012037:Refuse Disposal; D012498:Sanitary Engineering; D014876:Water Pollution; D014877:Water Pollution, Chemical
D004573:Electrolytes; D007220:Industrial Waste; D011108:Polymers