TECHNOLOGY FOCUS - BIOLOGY - Preferred Method: The method further comprises: (iv) pumping the generated biogas from the biogas digester through the air inlet pipe to the microbial reactor through the control pump, mixing the biogas containing carbon dioxide, hydrogen sulfide, ammonia and other gases in the microbial reactor containing the mixed strain of microorganism for absorption, completing purification by conveying marsh gas through an air outlet pipeline to the biogas tank or directly using the purified gas, where the biogas purification comprises: passing the biogas through the inlet liquid pipeline and control pump and the nutrient solution through the nutrient solution supplementing pipeline and its control pump, respectively from the biogas digester for supplementing mixed microbial strain, where the nutrient solution is calcium hydroxide (50 g), magnesium sulfate (20 g), manganese sulfate (10 g) and zinc sulfate (10 g), forming a mixture in 1000 ml of water, when the microbial reactor primary sequence is started, firstly from the biogas digester, directly discharging water through the liquid inlet pipe into the microbial reactor and diluting 5 times, according to nutrient solution, diluting the biogas in a volume ratio of 1:10000, adding the nutrient liquid till the biogas containing nutrient solution reaches a final concentration of calcium hydroxide (0.5%), magnesium sulfate (0.2%), manganese sulfate (0.1%) and zinc sulfate (0.1%) and adjusting the pH of the diluted liquid to 7.5-8.5, according to the nutrient solution containing the liquid with spiral algae in a volume ratio of 10000:1, adding spirulina from the strain supplementary pipeline and the control pump, performing illumination with a control light intensity greater than 3000 lux at 22-36 degrees C, until the microbial reactor slurry is green, inoculating the mixed microbial strain through the supplementary pipeline and the control pump, inoculating the spirulina containing nutrition liquid in a volume ratio of 1:10000 to inoculate, where the mixed microbial strain nutrient solution containing the biogas slurry is 1 g: 10000 l and after inoculating the mixed microbial strain, the microbial reactor is illumination is greater than 3000lux, at 22-36 degrees C, and the pH is 7.5-8. 5, and regulating the opening of the air outlet pipe through the air inlet pipe and the control pump when the carbon dioxide partial pressure is 5-15%, passing the biogas through the air outlet pipeline to the biogas tank or using directly, initiating the microbial reactor, supplementing liquid, containing a large amount of purified proliferation mixed microbial strain through the supplementary discharge pipe and its control pump, where the spirulina is Spirulina platensis SP-3 strain, the mixed microbial strain is Aspergillus niger ACCC30132, Actinosporangium species ACCC41443, Saccharomyces cerevisiae ACCC20064, Bacillus megaterium ACCC10010, Bacillus cereus ACCC11109 and Bacillus subtilis ACCC11060 in a mass ratio of 10:8:1:1:1:1, (v) generating biogas in the biogas digester and passing through the liquid inlet pipeline and opening the control pump into the microbial reactor, pre-filling the opaque pipeline in the microbial reactor to 2/3 the volume of 0.5-1 cm of straw particles composed of a filtering device and a filtering interception lower microbial reactor for generating spirulina and a large amount of mixed microbial strains, where the organic pollutants in the microbial reactor is absorbed by the microbial strain, finishing by decomposing to purify the biogas, passing the liquid through the liquid pipeline, or as in step the (iii) through the pump into the aerobic digester for inoculating mixed microbial strain thus speeding up biogas fermentation. The culturing of Spirulina platensis SP-3 strain comprises: dissolving sodium bicarbonate (16.8 g), dipotassium phosphate (0.5 g), potassium nitrate (2.5 g), potassium sulfate (1 g), sodium chloride (1 g), magnesium sulfate (0.2 g), calcium chloride (0.04 g), ferrous sulfate heptahydrate (0.01 g) and EDTA (0.08 g) in 1000 ml of distilled water, and packing into a culturing flask, sterilizing at 121 degrees C for 30 minutes, inoculating, calculating and inoculating spirulina (0.1 g) according to 1000 ml of the culture medium at room temperature, illuminating at 6000 lux, culturing for 48 hours, and shaking the culture flask. The culturing of Aspergillus niger ACCC30132 strain comprises: dissolving sucrose (30 g), magnesium sulfate (0.5 g), rozenite (0.01 g), sodium nitrate (3 g), potassium chloride (0.5 g) and dipotassium phosphate (1 g) in 1000 ml of distilled water, and packing into the culturing flask, sterilizing for 30 minutes at 121 degrees C, shaking, isolating and culturing 2-3 single colonies with an inoculation loop, shaking at 30 degrees C for 100 revolutions/minute and culturing for 24 hours. The culturing of Actinosporangium comprises: dissolving soluble starch (20 g), potassium nitrate (1 g), dipotassium phosphate (0.5 g), magnesium sulfate (0.5 g), sodium chloride (0.05 g), rozenite (0.01 g), at pH 7.4-7.6 in 1000 ml of distilled water, and packing into the culturing flask, sterilizing for 30 minutes at 121 degrees C, shaking, isolating and culturing 2-3 single colonies with an inoculation loop, shaking at 30 degrees C for 100 revolutions/minute and culturing for 48 hours. The culturing of Saccharomyces cerevisiae ACCC20064 strain comprises: dissolving starch (200 g), glucose (20 g), sodium chloride (2 g), peptone (1 g), in 1000 ml of water, adjusting the pH to 7.2, and packing into a culturing flask, sterilizing for 30 minutes at 121 degrees C, shaking, isolating and culturing 2-3 single colonies with an inoculation loop, shaking at 30 degrees C for 100 revolutions/minute and culturing for 18 hours. The culturing of Bacillus megaterium ACCC10010 strain comprises: dissolving corn flour (50 g), sodium chloride (2 g), peptone (1 g), sucrose (10 g) in 1000 ml of water, adjusting the pH to 7.2, and packing into a culturing flask, sterilizing for 30 minutes at 121 degrees C, shaking, isolating and culturing 2-3 single colonies with an inoculation loop, shaking at 30 degrees C for 100 revolutions/minute and culturing for 18 hours. The culturing of Bacillus cereus ACCC11109 strain comprises: dissolving peptone (5 g), sodium chloride (5 g), beef extract (3 g), agar (15 g) in 1000 ml of distilled water, adjusting the pH to 7 and packing into a culturing flask, sterilizing for 30 minutes at 121 degrees C, shaking, isolating and culturing 2-3 single colonies with an inoculation loop, shaking at 30 degrees C for 100 revolutions/minute and culturing for 18 hours. The culturing of Bacillus subtilis ACCC11060 strain comprises: dissolving sucrose (8 g), sodium chloride (3 g), peptone (3 g), beef extract (3 g) in 1000 ml of water, adjusting the pH to 7.2, and packing into a culturing flask, sterilizing for 30 minutes at 121 degrees C, shaking, isolating and culturing 2-3 single colonies with an inoculation loop, shaking at 30 degrees C for 100 revolutions/minute and culturing for 18 hours. The microbial reactor, after a week of continuous reaction in the step (v), retains a lot of spirulina and microbes on the straw filter for biological composting after purification of the inoculating liquid mixed microbial strain. The reactor in replacement with the straw filter trapping the fecal matter directly in the excrement filtering layer is a mixture of manure and straw in a mass ratio of 1:1000, uniformly mixing, regulating the temperature at 33 degrees C, adjusting the mixture of manure and straw material with a relative humidity to 60-70% and performing biological composting.    TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preferred Components: The material of the transparent pipeline is either glass or transparent plastic. The vertical pipes are arranged at intervals with transparent pipes and opaque pipes in groups of 2-6, preferably 4. The vertical pipeline present between the liquid outlet and inlet pipes are in groups of 2-6, preferably 4.