Rich students (Figure), papermaking wastewater reuse, papermaking wastewater provided by the Environmental Protection Engineering Co., Ltd. Guangzhou Fu students. Road Zhiyuan, tempering forward. Guangzhou Fu students Environmental Engineering Co., Ltd. (www.fsyhb.com) strive to be and you win, symbiosis, strategic partners before the trip, the more determined to become the most influential environmental monitoring equipment company, and you leap together to succeed ! papermaking wastewater treatment technologies - biological contact oxidation biological contact oxidation is attached biofilm wastewater and full contact on the packing, the use of microbial metabolism in the waste water of organic pollutants, nitrogen and phosphorus to achieve decomposition and conversion, so that the resulting waste water purification process. Biofilm attached to the filler layer is typically composed of milk, aerobic and anaerobic layer layer. When waste water and covered with a biofilm packing contact, adsorption and biological mucosa infiltration of wastewater pollutants into the film: low molecular weight organics in the mucous layer does not reach the outside world already decomposed microbes; polymers and refractory organics attached On Bo film, through microbial extracellular enzymes break down into small molecules, after entering the microbial cells. Biological contact oxidation and activated sludge wastewater treatment compared to paper manufacturers in Guangdong, operational simplicity, strong impact. The middle of the main components of the wastewater COD lignin dissolved in water, BOD5 / COD value of about 3.0, is more difficult to biodegrade wastewater. Bleaching using biofilm wastewater, BOD5 removal rate over 70%, while only about 30% COD removal, effluent quality is difficult to meet emission standards. May, after contact oxidation pond effluent in chemical coagulation and sedimentation of wastewater, treated effluent can meet emission standards. Hazards of a papermaking wastewater, waste pulp cooking section boiled pulp black liquor and soda acid method boiled pulp red liquid. Alkaline pulping liquor emitted mainly degradation products of wood solidarity and carbohydrates. Lignin degradation products have the smell even with a bad smell; the degradation products of carbohydrates will cause waste of BOD values ??increased. Because of the large alkaline black liquor, dark in color, smell heavy, made of foam, and consume a lot of oxygen papermaking wastewater discharge, water body in the water a serious threat to the environment and human harm. Because of its complex composition, difficult to handle, and sometimes consume oxygen in the water, so that the creatures can not normally survive in water, so that further deterioration of the environment. Red liquid acid pulping emissions, also mostly lignin degradation products and carbohydrates. 2, chlorine bleach liquid waste are now widely used chlorine bleaching technology. Hypochlorite bleach generated when the chloroform and other more organic chlorides, chlorinated phenols which is the main component, but there are more than 10 kinds of which are highly toxic substances. If this is not treated wastewater discharge standards or would not cause serious harm to the environment. 3, papermaking wastewater on the overall environmental harm caused by papermaking wastewater serious pollution to the environment, such as poorly biodegradable organic contaminants will remain in the environment for a very long time, papermaking wastewater detect damage to the environment, reduce environmental their resilience. Sewage discharged into water bodies high chroma, so water pollution, and reduces the self-purification capacity of water bodies, but also the water harsh environment of living organisms, or worse still is the accumulation of toxic substances in the body and enter the body through the food chain, resulting in produce a variety of unknown diseases, the ultimate victims of environmental damage or human himself. Wastewater will also contain the smell and color of the human senses cause some harm, so that the deterioration of the human living environment, on human health caused irreversible damage.