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Composite biological enzyme preparation for deweighting treatment of domestic sludge, and production and application method thereof

A compound biological enzyme and domestic sludge technology, applied in the direction of biochemical equipment and methods, enzymes, enzymes, etc., can solve the problems that are difficult to meet large-scale sewage treatment plants, complex biological enzyme production process, single sewage components, etc. It will produce secondary pollution, not easy to change and lose activity, and reduce the effect of TSS

Inactive Publication Date: 2013-02-27
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In my country, there are relatively few studies on the use of biological methods to reduce sludge, especially the use of compound biological enzymes to catalyze sludge reduction. Due to the complexity of the production process of biological enzymes in the past, the cost is high, and the composition of sewage is required to be relatively simple. It is difficult to meet the requirements of large-scale sewage treatment plants, so even less work has been done in this area

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] The treatment process of an urban domestic sewage plant is activated sludge method, and the process section includes grid section, primary sedimentation tank, biochemical tank (anaerobic tank, aeration tank), secondary sedimentation tank, return sludge section, and additives for compound enzyme preparations It is added in the anaerobic tank, aeration tank and secondary sedimentation tank, among which

[0085] (1) Add in anaerobic tank treatment:

[0086] Protease 25 parts;

[0087] Laccase 22 parts;

[0088] 17 parts of xylanase and pentosanase;

[0089] Cellulase, hemicellulase 25 parts;

[0090] 15 parts of lipase;

[0091] Amylase 12 parts.

[0092] Composite protective agent: 5.025wt% of the total amount of all enzymes, wherein:

[0093] Propylene glycol 3wt% of the total amount of all enzymes,

[0094] Xanthan collagen 0.5% by weight of the total amount of all enzymes

[0095] Potassium sorbate 0.01% by weight of the total amount of all enzymes

[0096] Ca...

Embodiment 2

[0125] The treatment process of an urban domestic sewage plant is activated sludge method, and the process section includes grid section, primary sedimentation tank, biochemical tank (anaerobic tank, aeration tank), secondary sedimentation tank, return sludge section, and additives for compound enzyme preparations is added to the anaerobic tank, where

[0126] (1) Add in anaerobic tank treatment:

[0127] Protease 30 parts;

[0128] Laccase, manganese peroxidase 25 parts;

[0129] 17 parts of xylanase and pentosanase;

[0130] 23 parts of pectinase and hemicellulase;

[0131] 13 parts of lipase;

[0132] Amylase 14 parts

[0133] Composite protective agent: 6.44wt% of the total amount of all enzymes, wherein:

[0134] Propylene glycol 3 wt% of the total amount of all enzymes

[0135] Xanthan collagen 0.4% by weight of the total amount of all enzymes

[0136] Potassium sorbate 0.02% by weight of the total amount of all enzymes

[0137] Calcium chloride, sodium chlori...

Embodiment 3

[0140] The treatment process of an urban domestic sewage plant is activated sludge method, and the process section includes grid section, primary sedimentation tank, biochemical tank (anaerobic tank, aeration tank), secondary sedimentation tank, return sludge section, and additives for compound enzyme preparations is added in the aeration tank, where

[0141] (1) Add in aerobic pool treatment:

[0142] Protease 25 parts;

[0143] Manganese peroxidase 25 parts;

[0144] 17 parts of xylanase and mannanase;

[0145] Cellulase 25 parts;

[0146] 13 parts of lipase;

[0147] Composite protective agent: 5.64wt% of the total amount of all enzymes, wherein:

[0148] Glycerol 4% by weight of the total amount of all enzymes

[0149] Xanthan collagen 0.6% by weight of the total amount of all enzymes

[0150] Sodium benzoate 0.03% by weight of the total amount of all enzymes

[0151] Sodium chloride 3% by weight of the total amount of all enzymes

[0152] Sodium thiosulfate 0...

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Abstract

The invention relates to a composite biological enzyme preparation for the deweighting treatment of domestic sludge, and a production and application method thereof. The invention is characterized in that 100-500 kilograms of composite biological enzyme for the deweighting treatment of domestic sludge are used for 100 thousand tons of municipal domestic sewage, wherein the composite biological enzyme for the deweighting treatment of domestic sludge comprises 25-30 parts of protease, 20-25 parts of one or more of laccase, polyphenol oxidase and manganese peroxidase, 17-21 parts of one or more of xylanase, pentosanase and mannase, 20-25 parts of one or more of cellulase, pectinase and hemicellulase, 10-15 parts of lipase and 12-16 parts of amylase. Compared with the prior art, the invention removes hydrogen sulfide gas and undesirable odor thereof, simultaneously eliminates the inhibiting effect of H2S on the nitrification process, effectively reduces nitrate and ammonia, decomposes proteins, starch, fat, food oil, xylan, cellulose and other organic substances, converts suspended substances, accumulated waste and soluble organic substances in the sludge into carbon dioxide, nitrogen gas, oxygen gas, water and sulphate, reduces the TSS (Total Suspended Solids), COD (Chemical Oxygen Demand) and BOD (Biochemical Oxygen Demand), greatly decreases the yield of the sludge, and has the advantages of no poison, no corrosiveness and no secondary pollution production.

Description

technical field [0001] The invention relates to a preparation for treating domestic sludge and a use method thereof. Background technique [0002] At present, no relevant patents have been found that specifically use compound biological enzymes to treat domestic sludge reduction, but some literature shows that the following methods can achieve sludge reduction, promote the decomposition of organic matter in sludge, and contribute to The volume reduction of sludge can objectively reduce the volume of sludge. [0003] References: "New Technologies for Sludge Reduction in Sewage Treatment", "Research on Multifunctional Microbial Agents for Sludge Reduction", "Research on Enhancing the Hydrolysis of Excess Sludge with External Enzyme", "Reduction of Excess Sludge Technology Research Progress", "External Enzyme Enhanced Hydrolysis of Excess Sludge Under Anaerobic Conditions", "Sewage Plant Sludge Enzymatic Reduction and Recycling Technology Research". [0004] (1) Chemical age...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N9/00
Inventor 吴荣标潘润锦孔维杰
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