文档介绍：xxxx市造纸厂废水处理工艺
摘要
制浆造纸过程中的许多工艺环节都有废水的产生,这些废水不仅对环境有危害,同时也大大提高了成本。为了解决这些问题,寻求一种合理的治理方法显得尤为重要。
本设计针对xxxx造纸厂废水的情况,按照国家和环保部门的要求,需要对该厂产生的污水进行处理。由资料知纸厂生产过程中产生的废水COD为1400mg/l,BOD为500mg/l,SS为1000mg/l。结合相关资料中造纸废水处理方法及工艺,根据废纸制浆造纸废水特点,以及污水排放标准,本厂废水处理方案确定为微孔筛网过滤-物化预处理-生化法。通过筛网,气浮去除大部分的SS,再经水解酸化将废水中难降解的有机物转化成可降解的有机物,之后的接触氧化法结合了活性污泥和生物膜的优点,提高了处理效率。
关键词:造纸废水;处理方法;接触氧化法;气浮法
ABSTRACT
Wastewater is generated in many aspects during the papermaking process . The wastewater is not only hazardous to the environment, but also greatly increased the cost. So, to solve these problems, finding a reasonable method of treatment is especially important.
The design is for the case of paper mills inBaotou, in accordance with the state and the requirements of environmental protection department . Information known by the paper mill, wastewater produced consists COD to 1400 mg/l , BOD to 500 mg/l, SS for 1000 mg/l. Relevant information in the bined with wastewater treatment methods and technology, according to the characteristics of the waste paper pulp and paper wastewater, and effluent standards, waste water treatment plant as a microscopic filter screen - physical-chemical pre-treatment - chemical or biological method at last. Through the screen, .most of the SS were removed, then acid hydrolysis of waste water in the anic matter into anic matter, followed by the contact bined with activated sludge and biology of the advantages of increased processing efficiency.
KEY WORDS: paper wastewater;treatment methods; contact oxidation;flotati
目录
前言 1
第一章绪论 2
2
2
2
2
3
,筛选废水 3
3
3
3
4
气浮或沉淀法 4
xxxx造纸厂相关资料 6
、水质资料 6
6
6
6
第二章处理工艺确定 7
概述 7
工艺比较 8
SBR工艺的主要特点是: 8
深井曝气工艺 8
AB工艺的性能特点 9
厌氧—好氧工艺 9
酸化水解—好氧工艺 9
UASB反应器 10
方案确定 11
第三章筛网 14
筛网的设计说明 14
具体设计