What equipment should be used for chemical sewage treatment?

Chemical wastewater treatment equipment.

With the intensification of environmental pollution of water resources by industrial production wastewater, industrial wastewater treatment is particularly important, and the utilization rate of industrial wastewater treatment equipment is gradually increasing.

At present, the commonly used industrial wastewater treatment equipment includes grid decontamination machine, air flotation machine, sedimentation tank, filter, buried sewage treatment equipment, dehydrator, sludge scraper, filter press and evaporator and other equipment.

Centrifuge: Centrifuges are mainly used to separate solid particles in suspension from liquids, or to separate two incompatible liquids with different densities in emulsions.

Sewage dewatering machine: The sludge dewatering machine is characterized by automatic control operation, continuous production, stepless speed regulation, suitable for a variety of sludge dewatering, suitable for sludge dewatering in water supply and drainage, papermaking, casting, leather, textile, chemical, food and other industries.

Aerator: The aerator is to inject microbubbles directly into the untreated sewage through the dispersed air impeller, and under the joint action of coagulant and flocculant, the suspended matter undergoes physical flocculation and chemical flocculation, thus forming a large number of suspended matter floccules.

Air flotation machine: It is a kind of equipment that removes suspended solids, grease and various colloids in various industrial and municipal sewage. The equipment is widely used in oil refining, chemical industry, brewing, slaughtering, electroplating, printing and dyeing and other industrial wastewater and municipal sewage treatment.

Evaporator: The principle of evaporation crystallization and evaporation concentration is used to evaporate and crystallize industrial wastewater, and the evaporator is divided into multi-effect evaporator, MVR evaporator and forced circulation evaporator.

There are many kinds of industrial wastewater treatment equipment, generally mainly industrial wastewater treatment technology and methods, and the selection of appropriate industrial wastewater treatment process can select different industrial wastewater treatment equipment.

The selection of industrial wastewater treatment equipment is based on the quality, quantity and treatment requirements of industrial wastewater.

Chemical wastewater, whether it is organic chemical or inorganic chemical industry, the composition of wastewater is complex, most of it is highly toxic, phosphorus, nitrogen content is high and it is not easy to be purified, so let's analyze and understand it todayWhat kind of equipment should be selected to achieve zero discharge treatment of chemical wastewater?

Chemical wastewater is mainly used in process wastewater, cooling water, waste gas washing water, equipment and site washing water discharged from industrial production.

Chemical wastewater treatment equipment can be used to achieve zero discharge of chemical wastewater, and the most used process of equipment is currently usedMicroelectrolytic processing, which can handle those with the following characteristics:Sewage

1. Sewage containing heavy metal content: electroplating wastewater, printing wastewater, mining wastewater;

2. Sewage containing BOD COD content: petroleum wastewater, leather wastewater, papermaking wastewater, wood processing wastewater;

3. Sewage containing pigments: dyes, printing and dyeing wastewater, coking wastewater, petrochemical wastewater;

4. Sewage containing phosphorus and sulfide: organophosphorus agricultural wastewater, organochlorine agricultural wastewater;

The process flow of zero-discharge microelectrolysis treatment of chemical wastewater is roughly as follows: when the equipment is introduced into the industrial wastewater, countless micro-battery systems will be formed in the equipment, which will form an electric field in its action space, and the H will be generated during the treatment process

and divalent iron ions can undergo redox reactions with many components in wastewater, and finally achieve degradation and decolorization.

My Suggested Scheme:

1. Firstly, the content of manganese ions in wastewater is determined. If it is very high, it can be pretreated first, ** part of manganese.

**Process: First use liquid alkali to adjust the pH of the wastewater to about one, and then add the sodium carbonate required for conversion according to the manganese ion and magnesium ion content you measured, and precipitate the manganese and magnesium ions in the form of carbonate. This process can be carried out in a reactor or pool.

2. The supernatant enters another pool, adjusts the left and right with liquid alkali, and then adds hydrogen peroxide and flocculant, and after sedimentation, the water that meets the discharge standard is obtained.

3. The equipment is simple, so you need a pool, a circulating pump, a dosing pump, etc., and it is best to have a plate and frame filter press.

4. Your wastewater is generally not so simple, and it must be accompanied by excessive chromium or other metal ions. There is currently no requirement for magnesium in wastewater discharge. But there are requirements for other heavy metals.

5. Your wastewater is estimated to have the problem of COD and ammonia nitrogen. Please treat the sewage according to the specific water quality and discharge it up to the standard.

Hello, glad to answer for you. 1. Special equipment: all kinds of sewage pumps, sludge pumps, water storage pumps, metering pumps, screw pumps, air compressors, roots blowers, centrifugal blowers, surface aerators, automatic water sampling machines, grid cleaning machines, sand scrapers, sludge scrapers, sludge scrapers, sludge suction machines, sludge thickening scrapers, digester sludge mixing equipment, biogas boilers, heat exchangers, liquid mixers and sludge dewatering machines, etc.

2. Electrical equipment: AC and DC motors, variable speed motors, starting switchgear, lighting equipment, lightning protection equipment, substation and distribution equipment (including cables, indoor line overhead lines, isolation switches, load switches, fuses, small amount of oil switches, voltage transformers, current transformers, power capacitors, power breakers, protectors, automatic devices and grounding devices, etc.). 3. General equipment:

Electric hoists, centrifuges, incubators, ovens, refrigerators, all kinds of manual and electric gate valves, butterfly valves, gate openers and check valves, green water spraying trucks, hand push and electric lawn mowers, winches, lathes, planers, milling machines, overhead cranes, transport vehicles, etc.

Hello dear, happy to solve the problem for you, <>

The process equipment of the sewage treatment plant includes those Answer: 1. Air flotation machine Air flotation machine is a kind of equipment used for water quality clarification, which can effectively remove the frivolous floc that is difficult to be deposited in the sewage, and has the characteristics of small footprint, stable treatment effect, simple operation, small sludge production, good effluent effect, and low operating cost. 2. Belt filter press The belt filter press is a solid-liquid separation equipment developed and developed from Germany, and the product is made of high-quality filter belts, which has the characteristics of large processing ability, high dehydration power, long service life, and contact operation.

3. The mature AO composite biological contact oxidation technology is selected, which has a good function of removing organic matter and denitrification in the water, and the new filler is selected, which has the advantages of fast film hanging, long life, fast treatment effect, automatic operation of the system underground, small footprint, low noise, no peculiar smell, etc. 4. Sloping plate (tube) sedimentation pool The inclined plate (tube) sedimentation pool is a combined sedimentation pool designed according to the theory of shallow pond sedimentation, which can improve the sedimentation power by 50 to 60%, and can be improved by 3 5 times in the same area. 5. Filter Mechanical filter is an important part of the purification system, which should be used to remove mechanical impurities, replacement, microorganisms, organic matter and other impurities.

The filter media generally include quartz sand, activated carbon, manganese sand, anthracite, etc., which can be divided into single-flow filter and dual-flow filter according to the water inlet method. Single-flow type: the pipeline is simple, the operation is stable, the filtration rate is low, and the operation cycle is short Double-flow type:

Large filtration capacity, strong decontamination, long operation cycle, messy pipeline 6, grid In the front process of sewage treatment, the grid blocks and removes all kinds of bone particles and floating objects, so that the follow-up treatment process can be smoothly mirrored.

The specific steps and methods used in sewage treatment plants will vary depending on the type of equipment and process. The following are the use process and some common precautions of general sewage treatment equipment:

1.Removal of large particulate matter: The first step in wastewater treatment is usually the removal of large particulate matter, which can be pre-treated by equipment such as screens or screens. Operators need to regularly remove solids that have accumulated on the equipment to ensure proper operation of the equipment.

2.Sedimentation tank treatment: After the sewage enters the sedimentation tank, the solid particles will settle to the bottom of the tank, forming a sludge layer. During the sedimentation process, the operator should pay attention to controlling the water level in the tank and the operation of the stirring device to ensure that the sludge deposition effect is good.

3.Biochemical treatment: After precipitation, the sewage will enter the biochemical treatment unit, such as activated sludge method, biological filter, etc.

In the process of biochemical treatment, it is necessary to ensure the healthy operation of biological flora and suitable environmental conditions. This includes the operation of the aeration system, the maintenance of appropriate temperatures, pH values and redox potentials.

4.Disinfection treatment: In some cases, the treated wastewater needs to be disinfected to kill pathogenic microorganisms.

Commonly used disinfection methods include ultraviolet irradiation, ozone oxidation, etc. In the process of disinfection, it is necessary to ensure the normal operation of the disinfection equipment and strictly control the dosage of disinfectant.

5.Deodorization treatment: For sewage treatment plants that produce unpleasant odors, deodorization treatment is required.

This can be achieved through activated carbon adsorption, biological deodorization, etc. Operators should pay attention to maintaining the function of deodorization equipment, and regularly replace or repair adsorption materials such as activated carbon.

6.Monitoring and maintenance: During the operation of sewage treatment equipment, regular monitoring and maintenance are required to ensure the normal operation and performance of the equipment. For example, monitoring the effectiveness of treatments, keeping equipment clean, regular maintenance and replacement of parts, etc.

In addition, operators need to understand the relevant safety operating procedures and emergency treatment plans to ensure personal safety and the normal operation of sewage treatment equipment. The specific operation details and precautions should be determined according to the operation manual of Liang Qin of the specific equipment and the suggestions of the first businessman. If you are not familiar with a particular equipment or process, it is advisable to consult a relevant professional or equipment supplier for proper operating guidance.

(1) Physical treatment.

The so-called physical treatment method is to separate and separate dissolved small objects and suspended pollutants in wastewater. Due to its different physical properties, it can be divided into gravity separation method, sieve method and centrifugal method. The cost of physical treatment is low, but the content of pollutants in the wastewater after treatment is relatively high.

2) Chemical treatment.

The chemical treatment method is to decompose toxic and harmful substances into non-toxic and harmless substances through redox reaction or neutralization. For example, chemical reactions are created by the addition of chemicals (common neutralization, redox, and coagulation). In the process of chemical wastewater treatment, chemical experiments are adopted, and the equipment used is equipped with supporting pools, irrigation, towers and some auxiliary equipment.

The chemical treatment method has the advantages of low investment, low cost and simple operation, a mature technical advantage, can withstand a large amount and high load impact, and can be applied to various chemical wastewater treatment, but it is difficult for chemical raw materials to continuously consume and produce sludge and discharge water for reuse, and covers a large area.

3) Physicochemical methods.

When treating wastewater by mass transfer, it not only involves chemical action, but also has related physical action, so it is called physicochemical method. It is a physical and chemical treatment method of sewage that combines physical and chemical effects to purify wastewater. These methods mainly include extraction, stripping, stripping, adsorption, electrodialysis, ion exchange, and reverse osmosis, among others.

Before using this method, the wastewater should be pre-treated to remove oil, suspended solids and harmful gases from the wastewater, and the pH value should be adjusted if necessary.

Sewage treatment equipment can refer to the following points for selection.

Basis for the selection of sewage treatment equipment

According to the nature of the sewage, the concentration of pollutants, the content of pollutants, including organic content, inorganic content, SS value, COD value, infectious virus content and so on. According to the specific pollution situation of water quality, the appropriate process equipment is selected.

2.According to the local water production requirements, each locality, for the environmental governance promulgated by the system and regulations are different, some places require more relaxed, some places require very strict. When selecting sewage treatment equipment, it is necessary to test whether the quality of the produced water of the equipment meets the local sewage discharge standards.

3.According to**. The difference between sewage treatment equipment is relatively large, with hundreds of thousands and hundreds of thousands.

Different materials, different processes, and different distances lead to the final difference of the equipment. When choosing a school infirmary, it is best to determine the actual budget of the infirmary.

4.Since many sewage treatment equipment are customized, when looking for equipment manufacturers, it is necessary to shop around, understand the manufacturer's qualifications, technology, market reputation, and choose based on all factors.

Advantages of sewage treatment equipment

1.Integrated equipment, simple operation, high safety, new coronavirus wastewater treatment equipment does not need to be guarded by manual personnel, saving the energy of the R&D personnel of the CDC.

2.It occupies a small area, can be placed indoors or outdoors, and can be treated in a timely and rapid manner, especially for the highly contagious new coronavirus wastewater, which can be treated in time and sterilized in time.

3.With a high degree of automation, the new coronavirus wastewater treatment equipment combines the traditional separation and filtration method with the new sterilization and aeration activated sludge method to filter the wastewater layer by layer according to the complexity of the wastewater.

4.Long service life, stable performance, the service life of the new coronavirus wastewater treatment equipment is more than 10 years, the operator only needs to regularly record the operating parameters, pay attention to daily maintenance, and check the water connection of the equipment to judge the use of the equipment.