Reading guidance：Cowboy clothing with chic, stylish and convenient features, gained worldwide popularity, popular in the world, leading the fashion trend. In Chinas Guangzhou Province, a city is one of the worlds proce

     Cowboy clothing with chic, stylish and convenient features, gained worldwide popularity, popular in the world, leading the fashion trend. In China's Guangzhou Province, a city is one of the world's processing center of denim clothing, denim clothing is the local pillar industry, cowboy production accounted for 60% of the market China 17%, occupy the world market. The main processing procedure of denim dyeing, stone, shrinking, cleaning etc., in this series of process, it will consume a lot of water, industrial waste water produced in large quantities. Because there will be residual waste water with ring structure of indigo dye and various reductive and strong oxidation dyeing assistant, help slurry agent, biochemical degradation process is longer, so the sewage treatment process using biochemical and physico-chemical process. The combined process of sludge production. According to relevant data, the annual wet pollution denim Industrial Park Sludge production has exceeded 10 million tons, at present, the main through simple landfill disposal, have yet to find suitable and disposal methods. However, disposal of sludge landfill will occupy a lot of land, can also cause environmental secondary pollution. Therefore, to find out denim dyeing sludge treatment and set effective method is imperative.
    It has been identified in denim dyeing sludge is mainly composed of fiber and pumice, two winding mixed difficult with physical separation, so resources should give full consideration to the characteristics of two kinds of material, to maximize the use of. 
Used as absorption raw materials
    Pumice debris is one of the main components in the mud stained denim India, as with stomatal chemical composition sio240%~70% volcano lava, al2o310%~16%, void inclusion volume accounted for more than the actual volume 1/2, after activation with chemical or physical, can release the empty space and adsorption with the cotton fiber at a certain temperature. Charcoal carbonization activation, into adsorption with high activity. Choose two activation carbonization process, is expected to be prepared for printing denim contaminated mud adsorbent has good adsorption properties in chemical, environmental and other industrial sectors and has broad application prospects. Some Japanese companies use pumice as raw materials for deodorization agent prepared with activated carbon, the effect of the same, the cost was decreased.
Used as cement raw materials
    Pumice silicate alo4 rate is higher, and has a water hardness, and is the active material of the cement. Fiber has a high calorific value, up to 17 450 kj/kg, denim fabric printing and polluted mud can be used as a raw material for cement, the pumice as active points, and fiber is as fuel, combustion heat can be used for cement firing.
Used as light ceramic raw materials
    In ceramic ingredients added some of the fuel, in the firing process, combustible and combustion of volatile the ceramsite pore formation, achieve the purpose of reducing the density of ceramsite lightweight ceramsite produced by the principle of. Fiber denim fabric printing and polluted mud on the one hand to play a role in pore formation, on the other hand due to the high calorific value of the fiber and in the sintering process can provide a considerable amount of heat, so as to reduce the burning process of the fuel consumption. Pumice as aluminosilicate, as part of the structure of the ceramic group.
 Used as rock wool materials
     Rock wool is a new type of lightweight, energy-saving synthetic silicate non continuous flocculent fiber material, is widely used in thermal insulation, sound absorption and insulation and other construction and chemical industry. The main chemical composition of the rock wool sio240%~50%, al2o310%~17%, pumice chemical group is consistent with rock wool requirements. Under the condition of high temperature, fiber combustion heat generated, and volatile, does not affect the quality of the products.   
    Denim fabric printing and polluted mud leaching solution containing Zn, Pb, Cr and other heavy metals, which as, P and NH3-N were more than surface IV water quality standard, simple landfill will cause secondary pollution to the environment. Jean dyeing sludge mainly composed of fibers and pumice, fiber is about 20%, the content of pumice to 79%. There are still some soluble salt, soluble salts in alkaline substances mainly. According to the composition characteristics of denim dyeing sludge, pumice, and fiber is the main object of resource application, two closely, physical separation difficult. Considering the denim fabric printing contaminated mud available as adsorbent, cement, light haydite and rock wool raw materials. 

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