TAILIEUCHUNG - Waste Water Treatment and Reutilization Part 15

Tham khảo tài liệu 'waste water treatment and reutilization part 15', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Wastewater Minimization in a Chlor-Alkali Complex 409 In this section the flow rate of cooling water discharge is 48 m3 h. This discharge should be recycled. The freshwater is also used in tail gas absorption and the discharge water has been reused in the hydrochloride process. White carbon black section The freshwater consumption of the white carbon black section is 27m3 h. The freshwater is mainly used in absorbing and cooling. Air absorber cooling consumes 5m3 h while the consumption of tail gas absorber acid gas absorber and discharge absorber are 6 6 10 m3 h respectively. Fig. 2. Balanced water system of plant 1 Sodium hypochlorite section This section has two streams of cooling water that are not recycled. They are the cooling water of the absorber and cooler whose flow rates are 16m3 h and 43m3 h respectively. Chlorine drying section The freshwater consumption is totally direct discharge cooling water. The discharged cooling water includes the tail gas column cooling chlorine water cooling and the chlorine cooling. Chlorine liquid section Despite of direct discharging water the freshwater are also used for bottle washing and hot water tank supplement. 410 Waste Water - Treatment and Reutilization discharge discharge Gas absorber 10m3 Acid gas absorber Tail gas absorber Hydroch loride 120 150m3 Steam condensate 6m3 27m3 54m3 100 150m3 Hydrogen drum sealing Tail gas absorber Chlorine drying I discharge Fig. 3. Balanced water system of plant 2 Plant 3 Plant 3 only consumes pure water and the pure water flow rate is 55 m3 h. The pure water is used in the electrolyzer feed and pump sealing. The discharge of pump sealing water could be reused in the resin regeneration. In addition the batch process of filter washing and resin regeneration consume 360 m3 pure water per day while the discharge is sent to dissolving salt. Plant 5 utility plant This plant is composed of the pure water production process and the cooling towers. The capacity .

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