60results about How to "Play a role in degradation" patented technology

The present invention belongs to the technical field of soil remediation and discloses a polycyclic aromatic hydrocarbon contaminated soil remediation material. The polycyclic aromatic hydrocarbon contaminated soil remediation material comprises the following components in parts by weight: diatomaceous earth, peat soil, humic acid, corn cob, nutrients, a surfactant, an oxidant and a compound microbial agent; the nutrients comprise rice bran, (NH4)2HPO4, urea, calcium superphosphate and plant ash; the surfactant is an anionic and non-ionic mixed surfactant; the oxidant is one of hydrogen peroxide activated sodium persulfate, potassium hydrogen persulfate or a Fenton reagent; the compound microbial agent comprises pseudomonadaceae powder, bacillus powder and fusarium powder; and the weight ratio of the pseudomonadaceae powder, bacillus powder and fusarium powder is 3:(1-5):(2-5). Compared with the prior art, beneficial effects are as follows: the polycyclic aromatic hydrocarbon contaminated soil remediation material is capable of degrading polycyclic aromatic hydrocarbons in the soil and also has an improved effect on the soil conditions of the soil.

The invention relates to a polypeptide preparation method, and particularly relates to a preparation method of earthworm polypeptide extract, the preparation method of the earthworm polypeptide extract includes (1) pretreatment, to be more specific, taking fresh earthworms, washing clean, homogenizing, and performing ultrasonic extraction; (2) fermentation treatment, to be more specific, adding mixed strains into a solid-liquid mixture, adjusting pH, and fermenting; (3) first enzymolysis, to be more specific, adding bromelain into the fermentation mixture, adjusting pH, and inactivating enzymes to obtain an enzymolysis substance; (4) second enzymolysis, to be more specific, adding pepsin into the enzymolysis substance for enzymolysis treatment, centrifuging the enzymolysis substance for removal of slag, and collecting supernatant; and (5) ultrafiltration treatment, to be more specific, taking the supernatant collated by the step (4) for ultrafiltration with an ultrafiltration membrane, and using a nanofiltration membrane for interception of the ultrafiltered filtrate, and lyophilizing the obtained interception liquid to obtain earthworm peptides. The earthworm polypeptide extract prepared by combination of the fermentation and the enzymolysis has good color, no fishy odor and bitter taste, and has better antioxidant activity, and the method also greatly improves the extraction rate of the polypeptides.

The invention discloses a remediation agent for remediating aged petroleum contaminated soil. The remediation agent is prepared from the following components: a compound surfactant microemulsion, rhamnolipid, persulfate and quick lime. A using method of the agent comprises the step of preparing the use amounts of the components according to the pollution degree of soil, wherein the use amounts of the components are respectively a light pollution use amount, a moderate pollution use amount and a severe pollution use amount. The remediation agent is green and environmentally-friendly, and all the components are common agents in environmental protection and restoration engineering and are easy to obtain; pollutants are finally decomposed into CO2, H2O and other non-toxic substances, so the removal rate of target pollutants is high, and secondary pollution to the environment is avoided; and a remediation method is easy and convenient to operate, short in repairing time, low in cost, high in safety and capable of achieving engineering application.

The invention discloses a preparation method of cow manure organic fertilizer. The preparation method is characterized by comprising steps as follows: (1) cow manure pretreatment: cow manure is squeezed and aired until the moisture content ranges from 30% to 40%; (2) pulverization treatment: a pulverizer performs pulverization treatment; (3) mixing: pulverized rice husk and cow manure are mixed uniformly; (4) ammoniation treatment: 9%-11% of ammonium hydroxide is added for ammoniation treatment; (5) fermentation in a fermentation pool: a leavening agent accounting for 3%-6% of the total mass of the mixture is added, and fermentation is performed in the fermentation pool; (6) deodorized fermentation: a fertilizer leavening agent accounting for 2%-3% of the total mass of the mixture is added for layered fermentation; (7) drying and granulation: the granular cow manure organic fertilizer with the moisture ranging from 15% to18% is prepared. The obtained cow manure fertilizer contains rich nutrition, ingredients are decomposed sufficiently, operation is simple, practicability is realized, and the utilization rate of the cow manure and rice husk is increased.

The invention discloses a bamboo powder fermentation feed. The bamboo powder fermentation feed comprises the following main raw materials by weight percent: 10-70% of bamboo powder, 10-30% of maize powder, 5-30% of cottonseed meal, 5-30% of soybean meal, 5-15% of soybean curb residue, 0.01-0.1% of glucose, 0.05-0.2% of sucrose, lactococcus lactis, lactobacillus plantarum, bacillus subtilis, bacillus cereus, trichoderma viride, beer yeast or brewing yeast. A preparation method for the bamboo powder fermentation feed comprises the steps as follows: trimming, spraying for roughly cleaning, cleaning for the second time, roughly crushing, and finely crushing to obtain fine bamboo powder; and mixing the raw materials, activating culture, enzymatically hydrolyzing microorganisms, drying and granulating, inspecting, packaging, marking and warehousing. According to the invention, a trace amount of micro harmful substances remained in the feed can be degraded.