The invention discloses a method for highly producing microalgae by utilizing biogas slurry for livestock breeding. The method comprises the following steps: (1) reducing the turbidity and the chromaticity and the content of a part of refractory organic matters through flocculating and precipitating; (2) after completing precipitating, carrying out solid-liquid separation through natural settlement; (3) adding a certain amount of sodium carbonate in liquid for regulating the pH (Potential of Hydrogen) and the salinity; (4) inoculating the microalgae in the biogas slurry after expanding culture; (5) carrying out feedback regulation on light intensity and the pH during a culture process; (6) harvesting the microalgae, and completing treatment. According to the method disclosed by the invention, the problem of too low yield of the microalgae in current biogas slurry culture is solved, the harvested microalgae can be used as a raw material of biodiesel, the treated biogas slurry can reachtown secondary sewage emission standard, low emission of the biogas slurry and cyclic utilization of resources are realized, and the method is suitable for large-scale popularization and application.

Method for highly producing microalgae by utilizing biogas slurry for livestock breeding

The invention discloses a process for treating high nitrogen and phosphorus pig-breeding biomass slurry by using three-stage series connection of wolffia arrhiza and effluent reflux. According to theprocess, wolffia arrhiza aquaculture ponds of three-stage series connection is adopted as main bodies, and the simple, practical and economical treatment process of the high ammonia-nitrogen pig-breeding biogas slurry is constructed by utilizing the characteristics of high nitrogen and phosphorus resistance and high nitrogen and phosphorus absorption of the wolffia arrhiza; the process comprises the specific steps of: (1) introducing the pig-breeding biogas slurry into a conditioning tank directly, and performing adjustment of the ratio of nitrogen to phosphorous and the pH value sequentially;(2) introducing supernatant obtained after the adjustment into the three-stage wolffia arrhiza aquaculture ponds sequentially, and performing inoculation on to-be-cultured wolffia arrhiza in the three ponds sequentially according to treatment time, wherein the treatment time in the first-stage wolffia arrhiza aquaculture pond is 2 days, the treatment time in the second-stage wolffia arrhiza aquaculture pond is 4 days, and the treatment time in the third-stage wolffia arrhiza aquaculture pond is 7 days; and (4) finally separating the cultured wolffia arrhiza from a liquid phase, making 50% ofthe separated liquid reflow to the conditioning tank, treating the rest liquid in a disinfecting tank, and discharging the liquid which meets discharging standards. The process has the advantages of being simple in operation procedure, high in efficiency of removal of nitrogen and phosphorus and low in operation cost, and the harvested wolffia arrhiza can be used as a raw material of biodiesel andthe like, so that the resourceful treatment of the biogas slurry is achieved, and no secondary pollution is generated.

Process for treating high nitrogen and phosphorus pig-breeding biomass slurry by using three-stage series connection of wolffia arrhiza and effluent reflux

The invention relates to application of an algae-bacterium symbiotic system in removing pollutants in swine wastewater. The algae-bacterium symbiotic system disclosed by the invention can reduce pollutant discharge, promote algae growth, purify wastewater and improve algae utilization rate simultaneously. The scenedesmus subspicatus-nitrobacteria symbiotic system is suitable for purifying pig farmwastewater.

Application of algae-bacterium symbiotic system in removing pollutants in swine wastewater

The invention discloses a method for removing nitrogen and phosphorus in aquaculture wastewater by chlorella-acinetobacter-pseudomonas combination. Concomitant acinetobacter and pseudomonas are separated and cultured by chlorella, the chlorella, the acinetobacter and the pseudomonas are used in a combined manner to remove nitrogen and phosphorus in the aquaculture wastewater. According to the method, the chlorella, the acinetobacter and the pseudomonas are combined and used, synergetic effects are achieved, the nitrogen and the phosphorus in the aquaculture wastewater can be remarkably removed, and the method has good application prospects and market values.

Method for removing nitrogen and phosphorus in aquaculture wastewater by chlorella-acinetobacter-pseudomonas combination

The invention discloses a novel enhanced biological deamination process for advanced biogas slurry treatment. The deamination process comprises the following steps: arranging a deamination tank at thefront end of the whole biogas slurry biochemical treatment, and adding a composite medicament and powdered activated carbon into the deamination tank. The novel enhanced biological deamination process solves the problems of poor biochemical deamination effect of biogas slurry with high ammonia nitrogen, large dosage of biogas slurry pretreatment, more types of chemical agents used, complicated operation process for preparing the agents, and incapability of producing organic fertilizers by chemical sludge.

Novel enhanced biological deamination process for advanced biogas slurry treatment

The invention discloses a composite system used for purifying high ammonia nitrogen pig breeding biogas slurry via algae-bacterium symbiosis/ecological floating bed combined technology. According to the composite system, algae-bacterium symbiosis and ecological floating bed technology is taken as a base, a high-efficiency low-consumption standard treatment system of high ammonia nitrogen pig breeding biogas slurry is constructed, and algae bacterium biomass and plant are obtained at the same time. A purifying method comprises following steps: pig breeding waste water is subjected to solid-liquid separation firstly, and is delivered into an anaerobic fermentation pool; generated high ammonia nitrogen biogas slurry is subjected to pH adjusting and nutritive salt adjusting, and is delivered into the composite system for processing, and biochemical treatment effluent is delivered through a flocculating settling pool and a disinfectant pool so as to realize clear water up-to-standard release. Operation is simple; operation cost is low; pollutant removing efficiency is high; harvested algae bacterium biomass can be taken as a raw material of feed, biological hydrogen production, and biodiesel, and no secondary pollution is caused.

Composite system used for purifying high ammonia nitrogen pig breeding biogas slurry via algae-bacterium symbiosis/ecological floating bed combined technology

The invention discloses a continuous system for processing high ammonia-nitrogen pig raising biogas slurry by combining microalgae and aquatic plants. According to the system, microalgae and aquatic plants are used as the basis for building an efficient low-consumption standard reaching processing continuous system of the high ammonia-nitrogen pig raising biogas slurry; meanwhile, microalgae biomass and plants are harvested. The continuous system has the concrete steps that pig raising waste water is subjected to solid-liquid separation and then enters an anaerobic fermentation pool; the generated high ammonia-nitrogen biogas slurry enters a microalgae and aquatic plant composite system to be processed after pH value and nutrition salt regulation; bio-chemical effluent flows into a flocculating settling pool and a sterilization pool; then, clean water is discharged in a standard reaching way. The continuous system provided by the invention has the advantages that the operation is simple; the nutrition substance removal efficiency is high; the operation cost is low; the harvested microalgae biomass can be used as feed and non-grain raw materials of biodiesel; in addition, secondary pollution is not generated.

Continuous system for processing high ammonia-nitrogen pig raising biogas slurry by combining microalgae and aquatic plants

The invention discloses a method for treating high-temperature steam thermo-hydrolyzed sludge through fermentation type acid-forming bacteria, belonging to the field of microbe application The method comprises the following steps: (1) screening the fermentation type acid-forming bacteria; (2) purely culturing the fermentation type acid-forming bacteria; (3) performing anaerobic digestion: according to the dosage of the fermentation type acid-forming bacteria to the high-temperature steam thermo-hydrolyzed sludge being 1 to 8 by volume, using the fermentation type acid-forming bacteria to treat the high-temperature steam thermo-hydrolyzed sludge, wherein the treatment temperature is 50 DEG C and the period is 18d; (4) performing methane collection for compost treatment on digested sludge According to the method provided by the invention, a microbiologic method is used for treating the high-temperature steam thermo-hydrolyzed sludge, compared with direct high-temperature anaerobic digestion treatment on the thermo-hydrolyzed sludge, the removal rate of COD is improved by 20 to 25 percent, and the gas production rate is improved by 90 to 95 percent The method provided by the invention has the advantages that the treating efficiency is high, the reaction period is short, meanwhile, generated methane can be comprehensively used, and real harmless reduction treatment on the sludge is realized

Method for treating high-temperature steam thermo-hydrolyzed sludge through fermentation type acid-forming bacteria

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Zhou Zhen

Author Tools

Chat about Author

Papers

Composite system used for purifying high ammonia nitrogen pig breeding biogas slurry via algae-bacterium symbiosis/ecological floating bed combined technology

Continuous system for processing high ammonia-nitrogen pig raising biogas slurry by combining microalgae and aquatic plants

Method for treating high-temperature steam thermo-hydrolyzed sludge through fermentation type acid-forming bacteria