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CN109354381A 一种浓缩纺织印染污泥的方法 无效 - 撤回

一种浓缩纺织印染污泥的方法
摘要：
一种浓缩纺织印染污泥的方法，包括以下步骤：（1）向预浓缩后的印染污泥中投加酸或固体释酸物质，调节pH为3-6；（2）加入玻璃化温度（Tg）高于室温的水性高分子共聚物，混合后反应5-30min；（3）加入与酸反应缓慢释放微气泡的无机物固体颗粒，不断反应释放微气泡黏附污泥颗粒；（4）加热污泥，使温度升高至水性高分子共聚物的Tg以上5-20℃，保温5-60min，使污泥上浮形成浓缩的污泥层；（5）排出底部的水层，使污泥得到浓缩；（6）将污浓缩泥降温冷却至温度低于水性高分子共聚物Tg以下，然后将污泥过滤脱水，提高污泥脱水速度。
摘要（英）：

A textile dyeing and printing sludge concentration method includes steps: (1) feeding acids or solid acid-releasing substances into pre-concentrated dyeing and printing sludge, and adjusting pH to 3-6; (2) adding a waterborne macromolecular copolymer with glass transition temperature (Tg) higher than the room temperature, mixing, and performing reaction for 5-30min; (3) adding inorganic solid particles which slowly release microbubbles in reaction with acids, and continuously releasing the microbubbles in reaction to adhere sludge particles; (4) heating sludge until the temperature rises to be5-20 DEG C above the Tg of the waterborne macromolecular copolymer, and keeping the temperature for 5-60min to enable sludge to float up to form a concentrated sludge layer; (5) discharging a bottomwater layer to concentrate sludge; (6) cooling the concentrated sludge to a temperature below the Tg of the waterborne macromolecular copolymer, and filtering and dewatering the sludge, so that the sludge dewatering speed is increased.

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