有机调理剂在印染生化污泥脱水中的应用研究  

Application of a Organic Conditioner in Dyeing Biochemical Sludge Conditioning

作　　者：吉世明 江栋 张有会 徐锡言 麦建波 崔利明 Ji Shiming;Jiang Dong;Zhang Youhui;Xu Xiyan;Mai Jianbo;Cui Liming(Guangdong Xindayu Environmental Engineering Co.,Ltd.,Guangzhou 510663,China;Zhongshan Gaoping Water Treatment Co.,Ltd.,Zhongshan 528445,China)

机构地区：[1]广东新大禹环境科技股份有限公司,广东广州510663 [2]中山市高平织染水处理有限公司,广东中山528445

出　　处：《广东化工》2024年第22期133-136,共4页Guangdong Chemical Industry

摘　　要：针对中山某纺织印染产业园废水处理站生化污泥采用无机调理剂(聚合硫酸铁)导致泥饼含水率高、产量低,造成系统排泥异常,以及滤液腐蚀性大、滤布更换困难、人员劳动强度大等问题,研究了不同有机调理剂对印染生化污泥调理的适用性。测试结果表明,新型4450有机调理剂能够应用于印染生化污泥调理,在配置浓度为0.15%~0.2%、粉剂投加比为0.3%~0.4%时,调理后生化污泥破真空时间<300 s,板框机泥饼产量(绝干泥量)提高10%~25%,泥饼含水率由66%降低至62%,污泥调理成本为169.4元/吨绝干泥。此外,该新型调理剂滤液pH为7,中性滤液大大减小对现场设备和管道的腐蚀,卸泥时间缩短50%,滤布更换周期延长一倍,大大减轻现场人员的劳动强度。本研究为印染行业生化污泥调理提供有效的工程指导和方法借鉴。Polymeric ferric sulfate(PFS) was used to improve dyeing biochemical surplus sludge dewatering properties in wastewater treatment station of a textile printing and dyeing industrial plant in Zhongshan,but there were many problems.This sludge conditioning method had the higher water content of filter cake( 66 %),the low filter cake output of plate and frame filter presses,the intensive physical labor and the short service life of the sludge conditioning equipments and pipelines and so on.To solve the difficulties of dyeing sludge dewatering,we researched the organic conditioners to replace PFS.The results showed that the novel organic conditioner could effectively improve dyeing biochemical surplus sludge dewatering performance.Compared with the PFS conditioning method,when the novel organic configuration concentration was 0.15 %~0.2 % and the powder dosage ratio was 0.3 %~0.4 %( organic conditioner weight/absolute dry sludge weight),vacuum breaking time of biochemical sludge<300 s,the amount of the filter cake output of a plate and frame machine increased by 10 %~25 % and the water content of the filter cake decreased from 66 % to 62 %.But the conditioning cost was remained unchanged( RMB 169.4 per ton absolute dry sludge).In addition,the pH of the new conditioner filtrate was 7,and the neutral filtrate greatly reduced the corrosion of field equipment and pipelines.At the same time,the sludge unloading time of each plate and frame machine was shortened by 50 % and the filter cloth replacement cycle was extended by 50 %.It was obvious that the new conditioning method greatly reduced labor intensity and labor time.

关 键 词：印染污泥 有机调理剂 生化污泥 

分 类 号：TQ[化学工程]