Jiangsu Envset

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Principles of industrial wastewater treatment

http://www.envset.com/Industry-News/Principles-Of-Industrial-Wastewater-Treatment.shtml

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Maintenance of Multi-Disk Screw Press (MDS)

http://www.envset.com/Industry-News/Maintenance-of-Multi-Disk-Screw-Press.shtml

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The dissolved air flotation machine is a key part of the entire air flotation process. The quality of the fine bubbles produced by the dissolved air flotation system will directly affect its air flotation effect to a certain extent. After the pressure water passes through the release device, the dissolved air water is dissipated. Release, the water will release excess air, so small bubbles form naturally when passing through the liquid, and the bubbles are very small, with a diameter of about 5-20 microns.

http://www.envset.com/Industry-News/The-key-process-of-dissolved-air-flotation-machine.shtml

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What effect does sewage have on our health?

With the rapid development of cities and human over-exploitation of domestic water, people have less and less access to clean water. After water pollution, pollutants enter the human body through drinking water or food chain, causing acute or chronic poisoning. What impact does this sewage have on our daily life and health?

http://www.envset.com/Industry-News/What-effect-does-sewage-have-on-our-health.shtml

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ENVSET Co., Ltd commit to business development and technological innovation, pursue total quality management, cultivate international talents, fulfill their social responsibility in enterprises, produce high quality wastewater treatment and other environmental protection equipment.

We advocate rich and colorful staff activities, enable employees to work hard in a pleasant working environment, actively participate in large exhibitions, increase opportunities for face-to-face communication with customers.

Take the global, the omni-directional competitiveness as the development goal, further development into an international professional manufacturer.

http://www.envset.com/Company-Culture.shtml

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Jiangsu Envset is a professional manufacturer and supplier of dissolved air flotation. If you are interested in learning more about dissolved air flotation equipment technology, you can consult us.

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Micro sewage treatment equipment

Main features of micro sewage treatment equipment: 1. Compact structure, small area, can be buried underground, plant flowers and plants on the upper part of the equipment or construct small buildings; 2. No impact on the surrounding environment, low sludge output and low noise; 3. New technology, good effect and long service life; 4. Each unit has complete composition and high operating efficiency; 5. The treatment core and auxiliary are combined, and the effluent quality is stable; 6. Use gravity flow to save energy; 7. Easy operation and convenient maintenance; 8. Fully automatic control, no need for professional management; 9. The equipment can be manufactured according to standards, or specially designed and arranged according to the needs of users; 10. The equipment takes high-efficiency biochemical treatment as the core, integrating biochemical treatment, precipitation, filtration, disinfection and other unit treatments into one, and the treated water quality is stable.

Detais:http://www.envset.com/Industry-News/Micro-sewage-treatment-equipment.shtml

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Common problems of sludge treatment- MLSS abnormal

(1) The relationship with sludge age. Sludge age is an operable means to reach the sludge age index by removing activated sludge. Therefore, controlling the age of the sludge also results in a suitable sludge concentration range. (2) The relationship with temperature. For the normal activated sludge flora, the microbial activity in it will double when the temperature drops by 10°C. Therefore, during operation, we only need to reduce the system sludge concentration when the temperature is high, and increase the system sludge concentration when the temperature is low to achieve the purpose of stabilizing the treatment efficiency. (3) The relationship with the settlement ratio. The higher the concentration of activated sludge, the greater the final result of the sedimentation ratio, and vice versa. It should be noted that during operation, the settlement ratio increased due to the high concentration of activated sludge, and the observed settlement sludge is compressed and compacted; the increase in settlement ratio caused by the increase in the concentration of non-activated sludge is mostly inferior to compactness and dull color. The sedimentation ratio caused by low mixed liquor suspended solids is too low, and the observed sedimentation sludge has a dull color, poor compressibility, and sparse sedimentation of activated sludge.

http://www.envset.com/Industry-News/Common-problems-of-sludge-treatment-MLSS-abnormal.shtml

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Surfactant wastewater treatment

After the surfactant is used, most of the emulsified colloidal substances are eventually discharged into nature with the waste water. After the primary pollutant LAS enters the water body, it combines with other pollutants to form colloidal particles with a certain degree of dispersibility. Anionic surfactants have the effect of inhibiting and killing microorganisms, and also inhibit the degradation of other toxic substances. At the same time, the surfactants foam in the water to reduce the rate of reoxygenation and the degree of oxygenation in the water, and make the water quality worse. If it is not treated Direct discharge into water bodies will cause eutrophication problems in lakes, rivers and other water bodies; LAS can also emulsify other pollutants in the water body, increase the concentration of pollutants, and increase the toxicity of other pollutants, thereby causing indirect pollution. Surfactant production wastewater, kitchen wastewater, bathing wastewater, laundry wastewater and other wastewater containing LAS have a greater chronic toxicity to animals, plants and humans. 

http://www.envset.com/Industry-News/Surfactant-wastewater-treatment.shtml

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MBBR processes improve reliability, simplify operation, and require less space than traditional wastewater treatment systems. MBBR technology employs thousands of polyethylene biofilm carriers operating in mixed motion within an aerated wastewater treatment basin. Each individual biocarrier increases productivity through providing protected surface area to support the growth of heterotrophic and autotrophic bacteria within its cells. It is this high-density population of bacteria that achieves high-rate biodegradation within the system, while also offering process reliability and ease of operation.

http://www.envset.com/MBBR-Bio-media/MBBR.shtml

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How to make a sewage treatment solution

1. Project Overview: Introduce the specific situation of the project, the source and characteristics of sewage; 2. Design basis: design reference specifications and standards; 3. Designed water quality and quantity: sewage quantity and water quality, and the standards that need to be met; 4. Process analysis: analyze and compare the advantages and disadvantages of various processes, and select the most suitable process; 5. Process flow: draw a process flow chart and introduce each process flow; 6. Analysis of the parameters of each structure: calculation of the parameters of the structure, size, and attached power equipment, materials, etc.; 7. Prevention and control of secondary pollution: analysis of possible secondary pollution and main prevention and control measures; 8. Description of electrical automation: analysis of power equipment and its degree of automation; 9. List of main structures and equipment: List of structures and equipment, with total project investment analysis; benefit analysis: analysis and calculation of sewage treatment costs, calculation of maintenance costs, analysis and calculation of resulting benefits, etc.

http://www.envset.com/solution.shtml

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Dissolved Air Flotation system

http://www.envset.com/Dissolved-Air-Flotation/DAF.shtml

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Anaerobic digestion technology of buried sewage treatment equipment

The stable anaerobic digestion process mainly depends on the normal physiological activities of three microorganisms: hydrolytic fermentation bacteria, acid producing bacteria and methanogens. Temperature has an impact on the growth rate of microorganisms and the concentration of FAN in the buried sewage treatment equipment. Usually, under the premise of ensuring the activity of methanogens, the anaerobic digestion process is selected at medium temperature (30-40℃) and high temperature (50-60 ℃) under two ranges. Researchers found that high-temperature methanogens have stronger tolerance to ammonia resistance than meso-temperature methanogens. In buried sewage treatment equipment, anaerobic needs to adjust the carbon-nitrogen ratio. Too high carbon-nitrogen ratio will cause insufficient nitrogen source in the system and cannot fully consume carbon source; low carbon-nitrogen ratio may cause ammonia accumulation and resist anaerobic digestion Therefore, choosing a suitable carbon-nitrogen ratio is very important for the elimination of ammonia interference and its stable operation. The enhancement of microorganisms is particularly important in anaerobic digestion technology, and domestication inoculation is one of the effective ways to enhance the ammonia adaptability of methanogens. As the ammonia concentration in the system slowly increases, microorganisms can gradually adapt to the environment with higher ammonia concentration. Generally, when the mass concentration of TAN is 3000mg/L, methanogens can be completely resisted, but the domesticated methanogens can survive in an environment higher than 3000mg/L. In addition, different inert materials (clay, zeolite, activated carbon, etc.) are added to the anaerobic reactor of buried sewage treatment equipment to reduce ammonia resistance and stabilize anaerobic through adsorption, ion exchange, and expansion of the specific surface of microbial colonies. The digestion process. Envset is a professional supplier of geographic sewage treatment equipment. Our equipment uses advanced anaerobic digestion technology for sewage treatment. If you have requirements for sewage treatment equipment, you can contact us. envset.com/Industry-News/Anaerobic-digestion-technology.shtml

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Wastewater treatment equipment operation methods and precautions- mechanical screen

The screen is used to block the suspended or floating large solid objects in the intercepted sewage, such as duck dung, duck feathers, fibers, etc., to prevent the subsequent treatment equipment from being blocked or damaged. The screen is mainly divided into two kinds of artificial screen and mechanical screen. Regardless of what type of screen is used, the operator should make regular inspections and remove the screen slag in time to avoid odors due to sedimentation or corruption of debris. 

The mechanical screen runs according to the set time, and the opening and stopping time is set according to the actual situation. The operation should be smooth, with good lubrication and no abnormalities. Check the operation, slag discharge, and slag connection every 2 hours, and treat the grid slag in time to prevent pollutants from clogging the grid or falling into the pool again because the grid slag is not cleaned in time. 

The tap water flushing system of the rotating drum screen is set with an automatic operation cycle. Regularly observe whether the screen is blocked. In winter, the screen should be avoided from freezing. The flushing system needs to be operated for a long time. 

Precautions:

(1) In the course of operation, if fiber debris is entangled and blocked the harrow chain, it should be cleaned in time to avoid affecting the normal operation of the machine;  

(2) When the machine is operating normally, calcium-based grease must be injected into the grease nipple of each lubrication part with butter every two months;  

(3) The lubricating oil in the reducer must be replaced regularly, and the general equipment must be replaced after half a month of operation. Change the oil every three months in the future, and pay attention to the oil level of the reducer.

The information comes from the Internet, please click for details:http://www.envset.com/

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Safety precautions for power usage of industrial wastewater treatment equipment

1. It is forbidden to use steel tape or steel tape for measuring work around industrial wastewater treatment equipment.

2. Don't blindly trust the switch or control device, only open the knife switch, there is an obvious breaking point is safe.

3. Hang up the sign of "No switch on, someone working".

4. Disassembled or broken exposed live joints must be wrapped in insulating cloth in time and placed in a place that is not easy for people to reach. Turn off the switch, unplug the plug, and cut off the power supply after using up the industrial wastewater treatment equipment.

5. Do not touch the electrical appliances and electrical installations of industrial wastewater treatment equipment with wet hands.

6. The housing of industrial waste water treatment equipment should be grounded reliably to prevent insulation breakdown of industrial waste water treatment equipment or personal electric shock when the housing is electrified. Turn off the switch, unplug and cut off the power supply after the industrial waste water treatment equipment is used up.

7. Try to avoid live operation. Live operation can only be carried out after the approval of the person in charge of electricity use and effective measures.

8. When several people are working together on industrial wastewater treatment equipment maintenance, they should be notified before the industrial wastewater treatment equipment is turned on.

9. Before confirming that there is no electricity, it should be considered that there is electricity, and do not touch industrial wastewater treatment equipment casually.

The information comes from the Internet, please click for details: http://www.envset.com/

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The role of anaerobic biological filter

Anaerobic biological filter is an anaerobic biological reactor filled with microbial carrier (ie filter material). Part of the anaerobic microorganisms adhere to and grow on the filter material to form an anaerobic biofilm, and some of them are suspended in the gaps of the filter material. Users who are familiar with wastewater treatment know the role of anaerobic biological filter in the entire wastewater treatment process. In order to let everyone know clearly, let us introduce the role of anaerobic biological filter.

1. Filtration: The filler intercepts large particles and suspended matter filtered into the water.

2. Hydrolysis: Anaerobic microorganisms can hydrolyze large-molecule insoluble substances into small-molecule soluble substances.

3. Absorption: Anaerobic microorganisms absorb and absorb organic pollutants in water, part of which is used for their own growth and reproduction, and part of which is sealed by U-shaped water in the form of biogas.

4. Denitrification: return the effluent from the contact oxidation bed to the anaerobic filter. The denitrifying bacteria in the anaerobic microorganisms can use the nitrate nitrogen in the return water and convert it into nitrogen to remove the nitrogen in the sewage.

The above four points are the role of anaerobic biological filter. After reading this article, I believe you will have a better understanding of sewage treatment. In the entire sewage treatment process, each part is playing its own role. If you want to know the details of other stages in the sewage treatment process, you can go to the Jiangsu Envset website for details.

The information comes from the Internet, please click for details:http://www.envset.com/

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Industrial wastewater pretreatment

The treatment before biochemical treatment is generally called pretreatment. As the cost of biochemical treatment is relatively low and the operation is relatively stable, the general wastewater is treated by biochemical method, and the treatment of industrial wastewater also uses biochemical method as the main treatment method. However, industrial wastewater contains certain organic substances that inhibit microorganisms and are toxic. Therefore, the wastewater must undergo necessary pretreatment before entering the biochemical tank. The purpose is to reduce as much as possible the substances that inhibit microorganisms and toxic in the wastewater. Or remove to ensure that the microorganisms in the biochemical pool can operate normally. There are two purposes of pretreatment: one is to reduce and remove as much as possible the substances in the wastewater that are toxic and inhibitory to microorganisms or convert them into substances that are harmless or beneficial to microorganisms to ensure the microorganisms in the biochemical pool It can operate normally; the second is to reduce the COD load in the pretreatment process to reduce the operating burden of the biochemical pool. The pretreatment process is iron-carbon micro-electrolysis and Fe2 /Fe3 reduction oxidation method. The countless tiny iron-carbon primary batteries formed are conducive to the oxidation-reduction reaction, which can destroy and remove the toxic and harmful substances in the wastewater, and neutralize the precipitation process The active flocs formed by ferric iron and ferric iron in alkaline conditions can also absorb organic substances in wastewater to reduce the COD load and ensure the normal operation of the subsequent biochemical treatment system. The information comes from the Internet, please click for details:envset.com