NOVELTY - Removal of pigment of molasses alcohol waste comprises enzymatic processing, fermenting methane, decoloring processing, filtering solid-liquor, separating and purifying process, obtaining methane, feed and fertilizer product, recycling purified water and discharging by reaching the standard; taking molasses alcohol waste and cellulose as culture medium, and cultivating molasses alcohol waste strain which is used for processing molasses alcohol waste directly; and adopting a solid-liquor separating process method of twice decoloring and four-time filtering.    USE - Method for removing pigment of molasses alcohol waste useful for producing methane, fertilizer and protein feed.    ADVANTAGE - The molasses alcohol waste processed by the method is short in processing time, small in device volume, little in investment, and capable of realizing continuous processing. The cost of processing molasses alcohol waste is greatly reduced. The purity of produced methane reaches 70-80%, and the purified water is colorless. The chemical oxygen demand (COD) determined by potassium dichromate method is less than 210 mg/l. The waste reaches the recycling and discharging standard; and it is free from secondary pollution, capable of protecting environment, and excellent in economic benefit.    DETAILED DESCRIPTION - Removal of pigment of molasses alcohol waste comprises:    (A) regulating molasses alcohol waste, and regulating concentration to 3-3.5 degrees Brix by backwater, and regulating pH to 6-6.3 by lime;    (B) adopting molasses alcohol waste strain, taking the molasses alcohol waste that is pre-treated as culture medium, and cultivating for 22-24 hours at 30-32 degrees C, and amplifying and cultivating the molasses alcohol waste strain by taking molasses alcohol waste that is pre-treated as culture medium for 22-24 hours at 30-32 degrees C;    (C) adding regulated molasses alcohol waste strain whose molasses alcohol waste weight is greater than or equal to 10%, controlling the processing temperature at 30-32 degrees C, and processing for 6-8 hours;    (D) performing solid-liquor separation on molasses alcohol waste processed by molasses alcohol waste strain by a horizontal spiral centrifugal machine, and drying the solid wet thallus and taking as feed, and filtering the waste liquor so as to ferment methane;    (E) adopting the IC process of conventional anaerobic and aerobic method, finishing the fermentation in 2-3 days, and recycling the methane for production and living;    (F) adding lime to the fermented methane waste liquor, regulating and controlling pH in 10-11, and adding flocculant that is 0.1-0.2% of the weight of fermented methane waste liquor;    (G) filtering the fermented methane waste liquor with regulated pH by a plate-frame filter press, taking the filter slag as fertilizer, and filtering the fermented methane waste liquor;    (H) primarily decoloring by adding fly ash that is 3-6% of the weight of fermented methane waste liquor to the filtered fermented methane waste liquor, and agitating uniformly;    (I) subsiding fermented methane waste liquor processed by last step in a flow rate of 5000-8000 m3/5-10 hours naturally;    (J) filtering the naturally subsided fermented methane waste liquor by plate-frame filter press, and regenerating and recycling the recycled fly ash by conventional method, and filtering the fermented methane waste liquor;    (K) adding active carbon that is 0.1 wt.% of the waste liquor to the fermented methane waste liquor processed by the last step, or bringing the fermented methane waste liquor to the next process in a flow rate of 80 m3/1-2 hours by ozone; and    (L) separating the processing solution by centrifugal machine centrifugally, and recycling the active carbon, and regenerating and employing it, and obtaining recycled or standard-reached discharge purified water.    DESCRIPTION OF DRAWING(S) - The drawing is a block diagram of a method for removing pigment of molasses alcohol waste (Drawing includes non-English language text).