How to deal with mechanical processing wastewater How to deal with industrial waste residue and wast

You can recommend that you use No. 01 demulsifier to separate the oil from the water first, destroy the oil and waste liquid in the water quality, so that they react with the demulsifier to adsorb and aggregate each other, and quickly flocculate and precipitate, so that the COD ammonia nitrogen and other substances in the wastewater will be partially reduced first, and the water will generally be very clean. The specific thing still depends on the water, after all, the things in the water will be used differently, and this needs to be tested.

The method of resin adsorption and oil removal can be considered, 90% of the oil is removed, and the rest is flotation and biochemical methods

This involves first filtering out the oil, and then using a physical method to filter out the visible impurities in the wastewater. Then use: iron-carbon micro-electrolysis + Fenton reagent + high-efficiency composite water purification agent of Kechuang water doctor to achieve the purpose of a large amount of precipitation.

The high-efficiency compound water purifier of the Kechuang Water Doctor is the laboratory test of the Kechuang Water Doctor according to the water sample and gets the test results. According to the water quality, the corresponding high-efficiency composite water purifier is configured. At present, there is only one company on the market that is willing to do this experiment for customers, which can further reduce the cost waste.

If the oil content of the wastewater is relatively high, it is recommended to separate the oil first, and the remaining wastewater can be pretreated with demulsifier or demulsification powder, and the treated wastewater can generally be clarified, and the subsequent use of AO process can be used.

1. Waste gas: collect the waste gas generated, and treat the industrial waste gas generated by the industrial site, such as dust particles, flue gas, odor gas, and toxic and harmful gases. Common waste gas purification includes factory smoke and waste gas purification, workshop dust and waste gas purification, organic waste gas purification, exhaust gas odor purification, acid and alkali waste gas purification, chemical waste gas purification, etc.

2. Wastewater: It is to use physical, chemical and biological methods to treat wastewater, purify wastewater, reduce pollution, and achieve wastewater reuse and make full use of water resources.

3. Waste residue: used as auxiliary fuel instead of low-sulfur coal; incineration in an incinerator, using its thermal energy to produce steam and generate electricity; High-temperature dry distillation produces gas and residue, which can be used as fuel, and the residue is cooled to form a glass body, which can be used as raw materials.

Power industrial waste residue, exhaust gas, waste water. It is not allowed to be treated and discharged casually, and it is not allowed to pollute the environment, so there are special emission and design methods.

In the manufacturing process, mechanical parts often need to be lubricated and protected, and the various oils attached to their surfaces must be removed before they can be made into finished products. Surfactants are used in the cleaning process to form a homogeneous and stable emulsion of oil and water. The main characteristics of this type of wastewater are:

The white emulsion with a small amount of bleaching oil on the surface has a high COD index, which far exceeds the emission standards set by the state, and must be treated before discharge. At present, the cleaning wastewater of mechanical parts mainly adopts the process of oil separation-air flotation-biochemical flushing.

The principle of mechanical wastewater treatment is as follows: oil separator treatment is to insert the floating oil floating on the water surface into the baffle on the water surface, collect it and remove it in a centralized manner. Air flotation treatment is to dissolve a large number of microbubbles under pressure (the diameter of the bubbles is generally 20-100 m) under the action of interfacial tension, bubble buoyancy and hydrostatic pressure difference, attached to the surface of the small oil beads dispersed in the water, and the combination of bubbles and attached pollutants floats to the water surface to achieve separation from water.

The insoluble oil in the water is removed by biological method, and then the dissolved pollutants in wastewater are removed by biological method to achieve the purpose of purifying wastewater. However, in the existing treatment methods, the air flotation process can only treat the insoluble oil in the wastewater, but cannot remove the emulsified oil, dissolved oil and surfactant molecules. Moreover, the existing treatment methods only have a 30-50% pollution removal rate for COD, and high-concentration wastewater often requires further biochemical treatment to meet the discharge standard.

Machine tool processing wastewater can be automatically treated by Aike electronic machinery wastewater treatment equipment, treatment method The treatment method of machine tool processing wastewater can be divided into the following types:

1.Sedimentation method: the wastewater is added to the sedimentation tank, the pollutants in the wastewater are precipitated by the addition of precipitant, and then the mud sedimentation in the sedimentation tank is fished out, the wastewater is discharged after treatment, and the mud is treated or disposed of after sedimentation.

2.Activated sludge method: The wastewater is added to the bioreactor to degrade organic matter by using a specific microbial population to achieve the purpose of purification. This method has a good treatment effect, and is suitable for a wide range of potatoes, but it has high requirements for the stability of water quality.

3.Membrane separation method: through ultrafiltration, reverse osmosis and other membrane technologies, the pollutants in the wastewater are separated from the water to achieve the effect of wastewater purification. This method has good treatment effect and does not need to add chemicals, but the equipment investment and operation cost are high.

4.Air flotation method: By adding gas, several sheds produce bubbles to make the pollutants in the wastewater float and laugh, and then achieve the purpose of purification through centralized treatment. This method has a fast processing speed and is suitable for small machining enterprises.

It is necessary to choose the appropriate wastewater treatment method according to the actual situation, and effectively purify the machine tool processing wastewater to achieve the purpose of environmental protection and energy saving.

Industrial wastewater usually contains a variety of organic, inorganic and harmful substances, which will cause serious pollution to the ecological environment if it is not directly discharged into the environment after treatment. The following are the treatment methods commonly used in industrial wastewater treatment equipment:

Sieving solids: Industrial wastewater contains solid particles of various sizes, and large particles of solids can be removed by physical methods, such as grids, cyclones, etc.

Sedimentation and sludge removal: The industrial wastewater that has been screened to remove solids is introduced into the sedimentation tank, and the suspended solids in the wastewater are precipitated through gravity to form sludge. Commonly used sedimentation tanks include sedimentation tanks, cyclone sedimentation tanks, air flotation sedimentation tanks, etc.

Biological treatment: The metabolic action of microorganisms is used to decompose organic matter into harmless substances. Biological treatment usually adopts activated sludge method, biofilm method, biological contact oxidation method, etc.

Chemical treatment: By adding chemical agents, the harmful substances in the wastewater are decomposed into harmless substances. Chemical treatments typically include neutralization, redox, coagulation and precipitation, etc.

Filtration: Remove fine suspended particles and organic matter in wastewater through physical methods, such as sand filtration, activated carbon adsorption, membrane separation, etc.

The above are the commonly used treatment methods for industrial wastewater treatment equipment, and the specific treatment methods and equipment selection should be determined according to the nature of wastewater and treatment requirements.

Eco wastewater treatment equipment adopts advanced treatment technology, which has good results in the treatment of industrial wastewater, and can tailor a suitable treatment plan according to the nature and requirements of wastewater, effectively remove harmful substances and organic matter in industrial wastewater, reduce the discharge standard of wastewater, and protect the ecological environment. At the same time, Eco wastewater treatment equipment has the characteristics of small footprint, high degree of automation and stable operation, and is deeply trusted by users.

Eco laboratory wastewater treatment equipment.

Wastewater treatment equipment is equipment used to treat industrial wastewater. In general, wastewater treatment equipment consists of the following steps:

Water pretreatment: including screen slag removal, sedimentation tank sedimentation, grass filter filtration and other processes. The main purpose of pretreatment is to remove solid impurities in wastewater and reduce the burden of subsequent treatment.

Biochemical treatment of water: including aerobic treatment and anaerobic treatment. Aerobic treatment mainly converts organic matter into inorganic matter through the metabolic activity of biological flora, and can also remove ammonia nitrogen, nitrate and other inorganic substances in wastewater; Anaerobic treatment is mainly the use of anaerobic bacteria to convert organic matter into gases such as methane and carbon dioxide.

Physical and chemical treatment of water: including precipitation, adsorption, ion exchange, electrolysis, ozone oxidation and other treatment processes. These processes can remove refractory organic matter, heavy metals, drugs, pesticides and other substances from wastewater.

Water disinfection: It is mainly used to disinfect wastewater by ultraviolet sterilization, ozone disinfection, chlorine disinfection, etc.

There are many types of wastewater treatment equipment, commonly used physical and chemical treatment equipment, biological treatment equipment, membrane separation equipment, etc. When selecting equipment, Fanfu needs to consider factors such as wastewater water quality, treatment requirements and discharge standards. In addition, wastewater treatment equipment needs to be regularly inspected, maintained and cleaned when it is first used to ensure the normal operation of the equipment and the treatment effect.

1.Electrolysis: The electrochemical reaction in the electrolytic cell is used to treat various pollutants in the wastewater.

Dissolved pollutants in industrial wastewater are formed by redox reactions in electrolysis to form precipitates or gas overflows. Electrolysis methods include electrolytic redox, electrolytic air flotation and electrolytic coagulation, which are mainly used to treat wastewater containing chromium and cyanide.

2.Chemical precipitation method: soluble chemical agents (i.e., precipitants) are added to the wastewater, and the chemical reaction occurs with the ionic inorganic pollutants in the water to generate insoluble or insoluble compounds, and the wastewater is precipitated and purified.

Chemical precipitation is mostly used to remove heavy metal ions such as mercury, chromium, lead, zinc, etc. from wastewater. Chemical precipitation methods include hydroxide precipitation, sulfide precipitation, barium salt precipitation and ferrite precipitation.

3.Disinfection and sterilization: Disinfection and sterilization technology is mainly used for the advanced treatment of water.

Chlorine, hypochlorite, chlorine dioxide, ozone, ozone-ultraviolet light are mainly used for disinfection. Chlorine dioxide, which is used to disinfect water, has received a lot of attention in recent years, mainly because it does not react with humus in water to form halogenated hydrocarbons. Ozone disinfection is considered to be an effective disinfection method to replace chlorine in the water treatment process, because ozone first has a strong bactericidal power, followed by the rate of oxidative decomposition of organic matter, so that the mutagenicity of the disinfected water is minimized.

Industrial wastewater treatment methods include physical method, chemical method and biological method. As we all know, biological method is a very economical method, but the composition of industrial wastewater is complex, some contain toxic organic matter, or contain heavy metal components, and microorganisms cannot carry out biochemical reactions in such wastewater, so we can add a pretreatment process section in the front stage of industrial wastewater treatment to improve the biodegradability of industrial wastewater.

Industrial wastewater pretreatment methods generally include the following parts:

1. FCM catalytic self-electrolysis method: it can open the ring and break the chain of cyclic or long-chain macromolecular organic compounds, redox the conjugated colored groups, and reduce nitrobenzene to amine aniline to reduce biological toxicity, so as to remove COD organic matter in sewage, decolorize, remove ammonia nitrogen and total nitrogen, remove heteroatoms, completely remove heavy metal ions, and improve the biodegradability of industrial wastewater.

2. SAO3 ozone catalytic oxidation method: ozone catalytic oxidation method is an advanced oxidation technology based on ozone, which combines the strong oxidation of ozone with the adsorption and catalytic characteristics of catalysts, which can effectively solve the problem of incomplete degradation of organic matter. It has a good application effect in the field of industrial treatment, and the pretreatment combined with ozone catalytic oxidation technology can increase the biodegradability and biochemical efficiency of wastewater, and can ensure that the effluent is stable and up to standard.

Industrial wastewater treatment projects can effectively remove pollutants in wastewater through wastewater pretreatment, biochemical treatment, advanced treatment and other methods, protect the environment and promote sustainable development.

Pretreatment: Industrial wastewater often contains impurities such as suspended solids, grease, and dissolved substances. The pre-treatment step is designed to remove these impurities, and common methods include screen filtration, sedimentation, pH adjustment, etc.

Some wastewater COD may exceed the standard, and simple pretreatment cannot be biochemical, so it needs to be usedIron-carbon micro-electrolysis technologyRemoval of toxic substances and effective removal of COD, improve biodegradability and biochemical efficiency.

Biological treatment: Pre-treated wastewater is introduced into a bioreactor to degrade organic matter by microorganisms. Common biological treatment methods include activated sludge method, anaerobic digestion, biofilm method, etc.

In biological treatment, microorganisms convert organic matter into carbon dioxide, water, and biosolids.

Advanced treatment: Some industrial wastewater may contain refractory organic matter, heavy metals, toxic substances, etc., which need to be advanced treatment. Advanced treatment methods include adsorption, oxidation, etcAdvanced oxidationetc., to further reduce the concentration of pollutants in wastewater.

Wastewater containing highly toxic substances, such as wastewater containing some heavy metals, radioactive substances, high concentration of phenol, cyanide, etc., should be separated from other wastewater for easy treatment and useful substances. Some wastewater with large flow and light pollution, such as cooling wastewater, should not be discharged into sewers, so as not to increase the load of urban sewers and wastewater treatment plants. This type of wastewater should be recycled after proper treatment in the plant.

Wastewater containing highly toxic substances, such as wastewater containing some heavy metals, radioactive substances, high concentration of phenol, cyanide, etc., should be separated from other wastewater for easy treatment and useful substances.

Some wastewater with large flow and light pollution, such as cooling wastewater, should not be discharged into the sewer, so as not to increase the load of urban sewers and wastewater treatment plants. This type of wastewater should be recycled after proper treatment in the plant.

In the production process of using toxic raw materials and producing toxic intermediate products and celery-resistant products, reasonable technological processes and equipment are adopted, and strict operation and supervision are implemented to eliminate leakage and minimize the amount of loss.

The most fundamental thing is to reform the production process and eliminate the generation of toxic and harmful wastewater in the production process as much as possible. If the toxic material or product is replaced by a non-toxic material or product.