Traditional water treatment methods are generally carried out by precipitation, biological filtration and other (aerobic, anaerobic) water treatment facilities.These facilities cover a large area, expensive investment, the effect is not very ideal.It has been suggested that the wheat starch plant should be built near the municipal sewage treatment station, and the discharged wastewater should be directly introduced into the sewage treatment station for centralized treatment with other municipal wastewater.Because the waste water discharged by the starch plant is rich in BOD and other industrial waste water is rich in COD, the treatment together can improve the efficiency of the whole city's waste water treatment.Conversely, the wheat starch plant can thus save about a part of the fixed asset investment in wastewater treatment.Large plant investment in more than 2 million yuan.Some wheat starch production process, the production process of water can be partially recycled, less waste water emissions, which is beneficial to save water and reduce the cost of water treatment.However, it will gradually increase the concentration of soluble matter in water during the production process, which will cause adverse effects on the whiteness of starch.In this way, it appears that the open water process works well, but it wastes a lot of water and sewage.

      Wastewater from wheat starch processing is also a difficult problem.The main reason is that the discharge of wastewater is large, and the investment and operation cost of wastewater treatment facilities are relatively large.The solids in the wastewater from wheat starch processing are mainly gluten and microdeposition powder.Soluble substances include water-soluble protein and soluble sugar, etc.And a very small amount of lipid.If a starch brightener is used during the production process, a small residue of the brightener may remain in the water.