[1]颜莹莹,孟春霖,臧星华,等.深圳市污泥深度脱水应急工程的设计与运行[J].中国给水排水,2022,38(4):120-124.
YANYing-ying,MENGChun-lin,ZANGXing-hua,et al.Design and Operation of the Emergency Project for Deep Dewatering of Sludge in Shenzhen[J].China Water & Wastewater,2022,38(4):120-124.
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YANYing-ying,MENGChun-lin,ZANGXing-hua,et al.Design and Operation of the Emergency Project for Deep Dewatering of Sludge in Shenzhen[J].China Water & Wastewater,2022,38(4):120-124.
深圳市污泥深度脱水应急工程的设计与运行
中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第4期 页码: 120-124 栏目: 出版日期: 2022-02-17
- Title:
- Design and Operation of the Emergency Project for Deep Dewatering of Sludge in Shenzhen
摘要:- 由于本地污泥处置能力不足，目前深圳市仍有约60%的污泥外运处置，运输距离远，处置价格高。2019年初，深圳福永水质净化厂将离心脱水后含水率80%的污泥运送至183 km外的华润电力海丰电厂进行掺烧，总成本约62 352 元/d。2019年5月起，该厂污泥深度脱水应急工程开始实施，采用能与现状离心脱水系统相衔接的深度脱水带式机，通过药剂调理和机械压榨，将污泥含水率从80%降至60%，污泥外运量从120 t/d降至68.3 t/d，减量效果显著。在污泥减量的同时，污泥的处理处置总成本也降至44 315 元/d，经济效益明显。此外，深度脱水后的污泥从团状塑态变为片状半固态，有利于进行长距离运输和电厂协同处置，污泥热值从-0.96 MJ/kg升至0.69 MJ/kg。该污泥深度脱水应急工程已稳定运行一年多，其设计和运行经验具有一定的借鉴意义。
Abstract:- Due to the lack of local sludge disposal capacity, about 60% of the sludge in Shenzhen is still exported for disposal, which means a long transportation distance and high disposal price. At the beginning of 2019, Shenzhen Fuyong WWTP transported the sludge with a water content of 80% after centrifugal dewatering to China Resources Power Haifeng Power Plant, which is 183 km away, for mixed burning with a total daily cost of about 62 352 yuan. Since May 2019, the emergency project for deep dewatering of sludge has been implemented. The deep dewatering belt dehydrator that can be connected with the current centrifugal dewatering system has been used to reduce the sludge water content from 80% to 60% and reduce the sludge transport volume from 120 t/d to 68.3 t/d through chemical conditioning and mechanical pressing with significant reduction effect. Besides, the total cost of sludge treatment and disposal has also decreased to 44 315 yuan/d, with obvious economic benefits. In addition, the appearance of the sludge after deep dewatering changes from a lumpy plastic state to a sheet?like semi?solid state, which is conducive to long?distance transportation and power plant co?processing. The calorific value of sludge increased from -0.96 MJ/kg to 0.69 MJ/kg. The emergency project of sludge deep dewatering has been running stably for over a year, whose design and operation experience can provide references.
相似文献/References:
[1]罗锋,彭进湖,张忠祥,等.南方污水处理厂污泥厌氧发酵制取碳源及投加策略[J].中国给水排水,2022,38(3):1.
LUO Feng,PENG Jin?hu,ZHANG Zhong-xiang,et al.Preparation of Carbon Source by Anaerobic Fermentation of Sludge in Wastewater Treatment Plant in Southern China and Its Dosing Strategy[J].China Water & Wastewater,2022,38(4):1.
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