Reading guidance：Recently, textile industry has been the rapid development, printing and dyeing waste water discharge volume continues to increase, thus produced by printing and dyeing residual sludge is gradually incr

    Recently, textile industry has been the rapid development, printing and dyeing waste water discharge volume continues to increase, thus produced by printing and dyeing residual sludge is gradually increasing, composition is relatively complex. In the sludge treatment and disposal of sludge process, is likely to cause environmental secondary pollution, causing new environmental problems. The treatment and disposal of sludge need the introduction of new technology.
Ultrasonic treatment technology
   Using ultrasonic (100 Hz) degradation of printing and dyeing waste water sludge is a new technology developed in recent years. The sludge can be by ultrasonic cavitation caused by strong hydrodynamic shear decomposition, cell wall broken, releasing cells contained components and cytoplasm, to enter into the further degradation. Ultrasound has the advantages of no pollution, high energy density and decomposition speed, for sludge refluxing system can reduce sludge yield. But the mechanism of ultrasonic wave was applied to the sludge treatment, the optimization of operating parameters and with the sewage treatment process reasonable combination still need to further study.
Use mine area to dispose sludge
  Chinese population, shortage of land resources. In order to alleviate this contradiction, people can use the sludge on the abandoned mines effectively filling and reclamation. (such as coal, iron ore mines) after years of mining, the formation of many large goaf, if not timely and effectively filling, will lead to large-scale geological disaster the surface subsidence and landslides. If the filling of sludge disposal and mine goaf combined, will contribute to the disposal of sludge has become a new "green hope project industry", also help the sustainable development of economy and society. The city sludge as a waste, although it contains some pollutants, but it at the same time also is a good organic fertilizer resources. The mine surface sludge waste, one input of organic matter and mineral nutrients of soil, is conducive to the promotion of the activity and reproduction of microorganism On the other hand, the number of soil microorganism is greatly improved because of the activated sludge, which is composed of microbial groups.
Wet-type oxidation method
   Wet oxidation is a kind of physical and chemical method at high temperature (critical temperature is 150 to 370 DEG C) and under a certain pressure, using this method to treat high concentration organic wastewater and wastewater biochemical is not easy to be very effective. Because the material structure and dyeing sludge in high concentration organic wastewater is very similar, so this method can be used for treatment of dyeing sludge. The sludge treatment of printing and dyeing by Wao method and the effect of reaction temperature has great effect on total COD degradation. Stay in the condition of 300 DEG and 30 min, the total COD removal effect 80. Reaction temperature on sludge oxidation is greater than the effect of solution concentration on the oxygen solution of residual sludge oxidation. In particular the temperature and pressure, total COD into soluble organic matter mainly depends on the oxidation time. In this process, the degradation of COD 82%, 18% COD in soluble form; more than 70% of the MLSS (mixed Synthetic solution suspended solids) is removed and the MLVSS (mixed liquor can be volatile suspended solids) and MLSS ratio decreased.WAO treatment of printing and dyeing sludge effect is very obvious, but due to under the condition of high temperature and high pressure reaction, simple equipment, operation and maintenance costs high for large and medium-sized sewage treatment plant.
High speed bio reactor
   High-speed bio reactor technology is developed in the use of soil sludge treatment based. Using soil microbial sludge treatment, because the system is open and is influenced by temperature and soil moisture, soil by time and area have a limitation. The SWEC company since the 80s of the 20th century began to develop high-speed bio reactor, the technology will be dehydrated sludge, digestion and drying combined, make soil treatment of the whole process in a closed loop system for.Texaco after nearly 20 years of research and development, the high-speed bio reactor technology gradually mature, and popularize.    The core part of the operating system of the biological reactor, which is composed of two parts, the upper part is mixed sludge and soil area, the load of sludge to be uniform, sludge components in bio degradation in this area; the lower part is a gas liquid liquid separation zone. Don't stay in the soil, in order to increase the oxygen transfer rate. High loading rate sludge through the system, the organic component will by 70% ~ 80%, the concentration of suspended solids removal rate was 45% ~ 60. Compared with other biological treatment technology, the system takes much less energy and can run continuously, and can keep the the optimum temperature for microbial degradation, especially suitable for the limitation of natural conditions or soil moisture in sludge treatment process. From 5000 to 30000 mg/l from the sedimentation tank sludge concentration can be directly into the system, without any pretreatment. Because of the high speed bio reactor operating under normal temperature and pressure, the structure of the reactor is not very high, so this method is widely used in the treatment of printing and dyeing sludge.
  New technology of textile dyeing sludge development and application can promote the disposal of the progress of sludge treatment, sludge treatment industry should have emerged the new sludge treatment technology. Zhengzhou Taida energy saving drying equipment Technology Co., Ltd. and national well-known university cooperation R & D sludge SCDD treatment enterprises.
 
  

：We are in an awkward situation in the process of sludge disposal We should have a good command of present situation ：Apply sludge to agricultural field Prefer to choose composting method