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Kunshan Pinhong EPT Co.,Ltd
Kunshan Pinhong EPT Co.,Ltd
Add : (Qiandeng Yuanchuang Base) No. 125, Jinxing South Road, Qiandeng Town, Kunshan, Jiangsu, China
Tel : （0086）15995617314
Fax : +86-512-50130524
E-mail :lvfang@ksphxs.com
31. What is a sewage slow infiltration system?
Sewage slow infiltration is to let the sewage slowly pass through the land, and the sewage is purified due to natural infiltration and filtration. It is suitable for soil with good water permeability and areas with low evaporation and humid climate.
32. What is a sewage rapid infiltration system?
Suitable for very permeable soils. Such as sandy soil, gravel sandy soil, etc. After the sewage tank reaches the surface of the rapid infiltration field, it infiltrates into the ground soon, and finally enters the groundwater layer.
33. How many stages does anaerobic reaction have? What are they?
The anaerobic reaction is divided into three stages: the first stage is the decomposition of organic matter into fatty acid machine products under the action of hydrolysis and fermentation bacteria.
The second stage is the further conversion of hydrogen-producing acetate into hydrogen, carbon dioxide and acetic acid under the action of bacteria.
The third stage is the methane fermentation stage (alkaline fermentation stage) through the action of two different groups of methanogens, one group converts hydrogen and carbon dioxide into methane, and the other group produces methane from acetic acid.
34. What is biphasic digestion?
Two-phase digestion is the separation of the acidogenic and methanogenic stages of anaerobic digestion of organic substrates.
35. What are the material components of sludge?
The composition of substances in sludge can be divided into organic sludge and inorganic sludge.
According to the source of sludge, it can be divided into primary sedimentation sludge, residual activated sludge, humic sludge, cooked sludge and chemical sludge.
36. What moisture is contained in sludge?
The moisture contained in the sludge is divided into four categories: the interstitial water between the particles, the capillary water, the adsorption water of the sludge particles and the water inside the particles.
Removal methods: gravity, air flotation, centrifugation.
37. What does mechanical dehydration include?
Mechanical dehydration: vacuum filtration dehydration, filter dehydration, rolling dehydration, centrifugal dehydration of sludge.
38. What is the stabilization purpose of sludge?
The purpose of sludge stabilization is to eliminate the odor emitted from the sludge and kill the pathogenic microorganisms in the sludge.
39. What is adsorption?
Using porous solids (such as activated carbon) or flocs (such as polyferron) to adsorb toxic and harmful substances in wastewater on the surface of solids or flocs or in micropores to achieve the purpose of purifying water quality, this treatment method is called Adsorption treatment. The object of adsorption can be insoluble solid substances or soluble substances.
40. What are the characteristics of physical adsorption and chemical adsorption?
Features of physical adsorption: the heat of adsorption is small, it can be carried out at low temperature, the adsorption is reversible, and the adsorption is basically non-selective.
Chemical adsorption characteristics: the heat of adsorption is large, the adsorption is irreversible, and the adsorption is selective.