China's existing chemical wastewater treatment mode is more, although these different ways play different roles, but in the process of use there are certain limitations, this limitation makes the wastewater treatment work can not be carried out efficiently, based on this, in order to realize the design of the treatment mode can play a better wastewater treatment effect, its design ideas should be carried out according to the following aspects:
1. Water quality characteristics of chemical wastewater
Under normal circumstances, the water quality fluctuation of the receiving tank will occur in the process of discharging wastewater in chemical engineering, and if the pH of the wastewater discharged in a short period of time in the discharge process is extremely high, the pH of the receiving tank will also change suddenly. Secondly, in the process of China's current chemical engineering production work, the extraction process used in the workshop does not use the two-stage sewage delayering equipment, which will lead to the direct discharge of wastewater.
Secondly, in view of the instability of the water quality and quantity of production wastewater, in order to ensure the stable operation of the wastewater treatment system, it is necessary to configure raw water, and it is necessary to allocate raw water COD The amount of raw water needs to be allocated Production wastewater COD The amount of domestic sewage COD glucose COD glucose amount of domestic sewage, that is: a b x y m n a b.
2. Selection of wastewater treatment process means.
The wastewater generated by different chemical industries has different characteristics, so in order to achieve better results in the process of wastewater treatment, the wastewater treatment technology should be reasonably selected. If the requirement for wastewater treatment is to realize the adjustment and balance of the pH of the wastewater, then the homogeneous adjustment process can be used to treat the wastewater, and this process can realize the adjustment and balance of the pH of the wastewater. Because the discharge of chemical engineering wastewater has a large fluctuation, so it will have an impact on the stability of the subsequent biochemical treatment, when affecting the stability of the subsequent biochemical treatment, it is not only easy to lead to the collapse of the sludge treatment system, but also will lead to the pH in the wastewater with strong instability, in view of this situation, the wastewater pool can be set at the port of the inlet water when the homogeneous adjustment process means are used for treatment, so that the uniform water quality can be realized. After the setting is completed, the pH level of the two tanks should be adjusted in the process of alternating between the two pools, so that the neutral pH level can be maintained when the wastewater enters the biochemical treatment system.
3. Analysis of wastewater treatment process.
In the process of chemical production of the wastewater to be treated to carry out the water inlet work first, in the past wastewater treatment process in its water inlet work often appears pipeline valve blockage, in the face of this situation can be set stainless steel grille to remove the solidified matter in the wastewater, so that can effectively avoid the occurrence of pipeline valve blockage problem. After the completion of the inlet work, it is necessary to start to carry out the homogenization treatment of oil separation, this treatment mode is to discharge the wastewater that is lifted up into the oil separation homogenization tank, and determine the residence time of the wastewater according to the discharge mode of the chemical production wastewater and the stability of the water volume, after the completion of the work, the pH of the wastewater should be adjusted, and the adjustment work is to put a certain amount of liquid alkali and sulfuric acid into the wastewater pool after the wastewater is discharged, when the pH adjustment of the wastewater is completed, The decomposition of hydrolytic acidifying bacteria can be used to convert the organic matter in the wastewater.
4. Chemical engineering wastewater treatment technology.
Magnetic separation technology is a new type of wastewater treatment technology developed in China in recent years, because the wastewater will contain a certain amount of non-magnetic or weakly magnetic particles, so the use of magnetic separation technology for wastewater treatment can be through the use of direct magnetic separation, indirect magnetic separation and microbial magnetic separation to remove the non-magnetic and weakly magnetic particles. Magnetic separation technology is still in the research stage in the current development of China, so it has not been widely used in practical work.
In China's current chemical engineering wastewater treatment used in a variety of process means, Dalton membrane plant believes that these treatment methods have certain limitations in terms of treatment effect and use cost, so it is not conducive to the effective development of the chemical industry, in view of this situation, it is necessary to combine the characteristics of wastewater water quality of chemical enterprises to use appropriate wastewater treatment process means and formulate the wastewater treatment process, so as to achieve the sustainable development of chemical enterprises from the strengthening of wastewater treatment work.
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