Shunting type dual-system sludge decrement film bioreactor and using method thereof
A membrane bioreactor, sludge reduction technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problem that the sludge cannot maintain a high concentration state, etc. To achieve the effect of sludge reduction, safe and reliable water quality, and simple operation
Inactive Publication Date: 2013-05-08
DONGHUA UNIV
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Problems solved by technology
When the organic concentration of the influent is low, the sludge cannot maintain a high concentration state due to the sludge's own metabolism, and MBR can only treat wastewater with a relatively high concentration.
Method used
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Embodiment 1
[0022] ×× Textile Co., Ltd. has an annual natural output of 6,500 tons of cotton yarn; an annual output of 1,000 tons of knitted gray cloth; and an annual output of 4.5 million pieces of knitwear. It is a textile enterprise integrating cotton spinning, knitting, printing and dyeing, and garment making. The total volume of production wastewater is 1000m 3 / d, concentration COD Cr Calculated at 550mg / L; in order to save water resources, the company decided to use advanced membrane technology for treatment and reuse. However, in order to ensure the service life of the membrane, pre-treatment must be achieved in order to make full use of the facilities and minimize the impact of salt on reuse; the decision is divided into two groups:
[0023] 25% of the dyeing wastewater in the pre-dyeing and finishing process, that is, 250m 3 / d Concentrated water containing almost all salts is a group, and the water quality COD is about 1500mg / L; 3 / d dilute wastewater (COD Cr About 300mg / l...
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The invention relates to a shunting type dual-system sludge decrement film bioreactor and a using method thereof. The reactor comprises a high-concentration system and a low-concentration system. The using method comprises the following steps of: shunting clear inflow water and dirty inflow water to obtain high-concentration inflow water and low-concentration inflow water; and making the high-concentration inflow water and the low-concentration inflow water enter the high-concentration system and the low-concentration system respectively, wherein the high-concentration system is used for treating high-concentration inflow water by adopting hydrolytic acidification and an aerobic film bioreactor and the high-concentration inflow water can be drained after being treated, and the low-concentration system is used for treating low-concentration waste water by using an anaerobic film bioreactor and an aeration biofilter, and the low-concentration waste water can be recycled as reclaimed water after being treated or further prepared into purified water. According to the method, the influence of salts in the waste water on recycling of reclaimed water is avoided by shunting clear water and dirty water, the problem that higher sludge concentration cannot be maintained due to excessively low organic load of the low-concentration system is solved, the treatment cost of sludge is lowered,and the running cost is lowered; and the process disclosed by the invention is particularly suitable for industrial sludge treatment and reclaimed water recycling in dyeing and finishing, brewing enterprises and the like.
Description
technical field [0001] The invention belongs to the field of sewage treatment equipment and its use, in particular to a split-flow dual-system sludge reduction membrane bioreactor and its use method. Background technique [0002] Membrane bioreactor (MBR) process, as a new and efficient water treatment technology, has the advantages of good treatment effect, stable effluent quality, simple equipment, small footprint and convenient operation, especially for high-concentration sludge reactors. It can reduce sludge production, and the effluent can meet the current and future highest requirements for sewage discharge standards. At present, when waste water resources become a trend and sewage discharge standards are becoming stricter, it undoubtedly has strong development potential and market prospects. Anaerobic membrane bioreactor (AMBR) is a sewage treatment process that effectively combines anaerobic treatment technology and membrane technology. When the anaerobic treatment ...
Claims
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IPC IPC(8): C02F9/14
Inventor李方
OwnerDONGHUA UNIV