亞洲
之前我們為大家介紹過了廢水的一些基本特征以及危害，大家都知道，印染行業的廢水以有機污染為主，成分比較復雜，而且它的可生化性普遍比較差，目前主要的處理方法以生物處理法為主，同時輔助一些預處理和物理、化學的深度處理。今天我們主要來講一下治理的幾種方法，使用不銹鋼過濾網，幫助我們凈化受到污染的水源。廢鉻液處理：在采用印花工藝的印染廠中，印花滾筒鍍筒時要使用重鉻酸鉀等物質，滾筒剝鉻時會產生鉻污染，這些含鉻的廢水必須要進行單獨處理，以控制鉻的污染。中和：印染廢水的pH值很高，除了使用調節池進行均化之外，一般還要設置一個中和池，主要對廢水的pH值進行處理，使其滿足后續生產工藝的需求。調節：印染廢水的處理流程中通常都會設置調節池，其作用是均化水質、水量，防止纖維屑、漿料物質等沉淀于池底，池內一般使用水力、空氣或機械設備來進行攪拌，水力的停留時間為7小時左右。染料濃腳水預處理：染色換品種的時候排放出的染料廢水數量少，但是濃度很高，要對這一部分的廢水進行單獨處理，可以減少廢水的濃度。
Before we introduce the basic characteristics of the wastewater and harm, as everybody knows, printing and dyeing industry wastewater is given priority to with organic pollution, the composition is complicated, and it can be less biological sex is generally, the main processing method is given priority to with biological treatment, and some pretreatment and the depth of the physical and chemical processing. Today we mainly talk about several methods of governance, the use of stainless steel filter, to help us purify polluted water.
Waste chromium liquid treatment: in the printing process of the printing and dyeing factory, the printing drum plating cylinder to use potassium dichromate and other substances, chromium stripping cylinder will produce chromium pollution, these chromium containing wastewater must be treated separately to control the pollution of chromium. Neutralization: Printing and dyeing wastewater has a high pH value. In addition to using the regulating pool for homogenization, it is generally necessary to set up a neutralization pool, mainly treating the pH value of the wastewater, so that it can meet the needs of the subsequent production process. Regulation: printing and dyeing wastewater treatment process is usually set up a regulation pool, its role is to equalize the water quality and quantity, to prevent fiber chips, slurry materials and other precipitation at the bottom of the pool, the pool generally uses hydraulic, air or mechanical equipment to stir, the residence time of hydraulic is about 7 hours. Dye thick foot water pretreatment: when dyeing for varieties, the amount of dye wastewater discharged is small, but the concentration is very high. To treat this part of wastewater separately, the concentration of wastewater can be reduced.