Combined biofilter device and method for treating papermaking wastewater
A biological filter, papermaking wastewater technology, applied in aerobic process treatment, chemical instruments and methods, processing wastewater treatment and other directions, can solve problems such as non-standard filter materials, achieve low infrastructure costs, high porosity, and convenient management Effect
Inactive Publication Date: 2016-06-15
INNER MONGOLIA UNIV OF TECH
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Problems solved by technology
The biological aerated filter has the characteristics of small footprint, low infrastructure cost, convenient management, and good effluent quality. However, the selection of filter materials used in the filter is not standardized, and there are many problems in the operation effect and investment and operation costs. question
Method used
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[0029] like figure 1 As shown, the sewage to be treated flows through the packing layer (2) through the water distribution tank (1), passes through the water outlet area after being oxidatively degraded by the biofilm attached to and growing on the packing layer, and finally is discharged through the pipeline of the water outlet. The function of the distribution pool is to store sewage, and make the sewage flow evenly through the section of the packing device through the pipeline. The aeration pump (4) supplies the oxygen source required for the growth and metabolism of microorganisms to the biofilm grown on the packing layer in the biofilter (8) through the aeration pipe (3), and the nutrients for the growth and metabolism of the microorganisms in the biofilter (8) are those in the sewage. Organic pollutants are provided. During the process of growth and metabolism, the organic pollutants are oxidized and degraded, so that the organic matter in the sewage is removed and purif...
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The invention relates to a combined biofilter device and method for treating papermaking wastewater. The device comprises a water distribution tank (1), a filler layer (2), an aeration pipe (3), an aeration pump (4), a sludge region (5), a water inlet valve (6), a sludge discharge port (7), a biofilter (8), an overflow weir (9), an overflow water outlet (10), a sloping plate precipitation region (11), a sludge discharge hopper (12) and a sludge discharge port (13). The combined biofilter is a novel sewage treatment technique developed for aeration biofilter modification. The primary precipitation tank is removed in the sewage treatment process, and the sloping plate precipitation tank is adopted to remove the activated sludge precipitation effect and the surplus activated sludge dewatering effect in the secondary precipitation tank. Thus, the device has the characteristics of favorable treatment effect and low engineering investment. The high adsorptivity and biocompatibility of the combined calcium silicate filler can be utilized to ensure the treated papermaking wastewater effluent to achieve the reclaimed water recycling landscape water quality standard.
Description
Technical field: [0001] The invention belongs to the technical field of industrial wastewater treatment, and in particular relates to a combined biological filter device and method for treating papermaking wastewater. Background technique: [0002] The paper industry is an industry directly related to the social economy. It is also an industry with large water consumption, serious environmental pollution, and high energy and chemical raw material consumption. The waste water produced by the paper industry has been recognized as one of the "six major public hazards" in the world. . This is because the discharge of papermaking wastewater is large, there are many types of pollutants, and the wastewater contains a large amount of toxic and harmful substances, including suspended solids, organic substances, mutagenic, carcinogenic, teratogenic and other substances, if they are directly discharged without effective treatment , it may cause the pollution of the entire water body, ...
Claims
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Login to View More IPC IPC(8): C02F9/14C02F103/28
CPCC02F3/02C02F1/52C02F3/107C02F2103/28
Inventor 张永锋王晓燕崔景东刘凯赵丽娟
Owner INNER MONGOLIA UNIV OF TECH