The essence of wastewater biodegradability refers to the fact that the pollutants contained in the wastewater change the chemical structure of the pollutants through the life activities of the microorganisms, thereby changing the degree of chemical and physical properties of the pollutants.
The purpose of studying the biodegradability of pollutants is to understand whether the molecular structure of the pollutants can be decomposed by the action of the organism to the structural form allowed by the environment, and whether there is a sufficiently fast decomposition rate.
Over the years, accumulated at home and abroad in the study of various types of organic biodegradable performance of a lot of information to common organic chemical wastewater, for example, various substances biodegradability can be summarized in Table - [all types of organic matter may Degradability and special cases].
When analyzing the biodegradability of contaminants, the following points should also be noted.
1 Some organic substances are less toxic at low concentrations and can be degraded by microorganisms. However, at higher concentrations, it exhibits strong toxicity to microorganisms, as is the case with common phenol, cyanide, and benzene. If the concentration of phenol is 1 %, it is a good bactericide, but below 300mg/L , it can be degraded by domesticated microorganisms.
2 Waste water often contains a variety of pollutants. These pollutants may be mixed and mixed in the wastewater, which may cause compounding and polymerization, thus increasing their resistance to degradation. The mixing between toxic substances tends to increase the toxic effect. Therefore, the wastewater with complex water quality components cannot simply judge the difficulty of biochemical treatment of wastewater by the presence of a certain compound.
The species of the three inoculated microorganisms is an extremely important factor. Different microorganisms have different enzyme-inducing properties. Under the induction of the substrate, some microorganisms may produce corresponding inducing enzymes, while some microorganisms cannot, and thus the degradation ability of the substrate is different. At present, wastewater treatment technology has been developed to use special-effect bacteria and mutant bacteria to treat toxic waste water, and the degradation efficiency of toxic substances has been greatly improved. It has been found Fusarium (Fusarium), Nocardia (of Nocardia) cyanide and the like having the ability to break nitrile; Pseudomonas (e.g., phenol food hair pole Bacillus Pseudomonas phenolphagum, a phenol solution very gross tuberculosis Pseudomonas phenolicum), Micrococcus (Micrococcus) and the like have strong ability to degrade phenol . In the anaerobic fermentation process, some species of Pseudomonas and Flavobacterium have strong acid-producing ability, and Methanococcus has High gas production capacity.
At present, most of the biological treatment systems at home and abroad use mixed strains, natural induction and screening through domestication of wastewater, and the degree of domestication has a great influence on the degradation efficiency of substrates, such as treatment of phenol-containing wastewater, good domestication. when receiving the concentration of phenol may be several tens of mg / l up to 500 - 600mg / L.
4 Environmental factors such as pH , water temperature, dissolved oxygen, heavy metal ions have an impact on the growth and reproduction of microorganisms and the existence of pollutants. Therefore, these environmental factors also indirectly affect the degree of degradation of organic pollutants in wastewater.
Due to the variety of pollutants in the wastewater, the mutual influence is complicated. Therefore, the biodegradability of the wastewater should be evaluated through experiments, and the possibility and rationality of biochemical treatment should be judged.
An important data for judging the biodegradability of wastewater is the BOD value. Yingnuo Instrument (Shanghai) Co., Ltd. is a distribution agent, acting as the agent of the German lar ( LAR ) BioMonitor online BOD analyzer to monitor wastewater online and effectively grasp the wastewater condition. The biological toxicity online warning system can monitor surface water and drinking water online, and timely grasp the water quality.
Colon Hydrotherapy Machine
Colon Hydrotherapy Machine Principle:
The Colon Hydrotherapy Machine adopts the non-intrusive method to provide a safe and comfortable therapy, and it can operated easily; the user only need to hold the are-shape hydrotherapy nozzle and put it on the anus gently, the treated pure water with constant temperature and pressure will flow into the colon from the anus.
a lubricant layer between the intestinal wall and feces forms soon after water enters the colon; then the impacted feces and toxins will be evacuated through natural excretion mechanisms by decomposing the impacted feces, and promoting the squirm of large intestine.
The process enables a quick and thorough defecation. It is completely painless, non-toxic and free of side effects. Besides, the ozone generator in the system can provide ozone water for gynecologic and skin sterilization.
Colon Hydrotherapy Machine Function:
Get rid of constipation: colon hydrotherapy system will dissolve and dilute impacted feces, and stimulate the natural defecation function. Eliminate impacted feces and toxins: colon hydrotherapy system adopts physical method to clean out the impacted feces and toxins, thus it will reduce risk of
[autointoxication".
There`re not only the residues of digested food but also a lot of toxins, such as ammonia which may induce hepatic coma, hydrogen sulfide affecting the nervous system, methylindole leading to cancer, botulinum toxin, Tan toxic alkali, benzene, formic acid, butyric acid and so on. With the growing age, feces and toxins gradually accumulate in the body;
Been absorbed into the blood system by the intestinal mucosa, they will cause damage to the organs, meanwhile, lead to digestive system diseases and skin problems, even though make blood pressure problem, heart disease, Alzheimer`s and other symptoms worse. Impacted feces accumulate in the colon for a long time is an important inducement to the colorectal cancer.
Gynecologic and skin sterilization: colon hydrotherapy system (except comfort type) has ozone generator to produce ozone water for sterilization of harmful bacteria. Except for removing surface skin bacteria, it can also used for killing harmful bacteria which may cause gynecological inflammation, so it can be used for the treatment of vulva inflammation.
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