Chemical and chemical wastewater treatment equipment

The chemical and chemical wastewater treatment equipment produced by Zhengyuan Environmental Protection Manufacturer, as well as the food wastewater treatment equipment, have reasonable design, beautiful appearance, strong universality, exquisite materials, and are sturdy and durable. Chemical and chemical wastewater treatment equipment has low prices, direct sales from manufacturers, on-site installation, and a series of after-sales services.

The price of chemical and chemical wastewater treatment equipment starts at 20000 yuan, and specific prices need to be consulted with customer service.

Analysis of Chemical and Chemical Wastewater Quality

1. Characteristics of sewage quality

The chemical industry is a highly polluting industry, and it requires a large amount of water in the production process. After production is completed, the water used in production becomes wastewater containing a large amount of pollutants such as sulfur and phenol cyanide, which needs to be discharged. Due to the diversity of chemical production products, the discharged wastewater also contains a large amount of various pollutants, such as polycyclic aromatic amine compounds, heterocyclic compounds, etc. These pollutants can cause changes in the properties of wastewater, which puts higher requirements on chemical wastewater treatment technology and equipment, thereby increasing the difficulty of chemical wastewater treatment.

2. Wastewater treatment process

In the early stages of the development of chemical industry, people only valued the benefits brought by chemical industry, lacked awareness of water conservation and environmental protection, and did not realize the consumption and pollution of water resources caused by chemical industry. With the continuous development of society and the increasing severity of energy and environmental crises, people's awareness of water conservation and environmental protection is also constantly improving. They have begun to pay attention to the consumption and pollution of water resources by chemical industry, which has promoted the rapid development of sewage treatment technology. Through the treatment of sewage, this type of water has become the inflow of production processes, realizing the recycling of water resources.

Technical parameters of chemical and chemical wastewater treatment equipment:

Style: Underground type

Automation level: Automatic;

Applicable object: sludge;

Filter material type: Diatomaceous earth;

Performance: Precise filtration, efficient filtration;

Scope of application: chemical, pharmaceutical, food;

Effective volume: 100 (L);

Dimensions: 26 (m);

Processing capacity: 1-10m3/h;

Feed moisture content: 20-40 (%);

Moisture content of filter cake: 10-20 (%);

Equipment weight: 5000 (Kg).

Advantages of Zhengyuan Environmental Protection Chemical Wastewater Treatment Equipment:

1. Strong ability to withstand impact loads. The average residence time of contact oxidation method is more than 6 hours;

2. It has the ability to remove nitrogen and phosphorus, and can achieve the ability to treat industrial wastewater, domestic sewage, and urban sewage by adjusting the structure of the equipment;

3. The fillers in the contact oxidation tank are mostly composite soft fillers, which are lightweight, high-strength, physically and chemically stable, have a large specific surface area, strong biofilm adhesion ability, and high contact efficiency between sewage and biofilm;

4. An aerator is used in the contact oxidation tank for air blowing aeration, causing the fiber bundles to continuously float and aerate evenly, resulting in mature microbial growth and possessing the characteristics of activated sludge process;

5. Stable effluent quality, low sludge production and easy treatment;

6. Submersible pumps can be installed in equipment to reduce construction costs;

7. The equipment can be installed on the ground or buried underground. When buried underground, the upper cover can be used for greening, resulting in a smaller factory area and fewer ground structures;

8. Easy to achieve automatic control, with simple management and operation.

9. The device can be connected to a car to make a mobile integrated sewage treatment equipment.

Chemical and chemical wastewater treatment equipment process:

1. Physical processing technology

(1) Centrifugal method

The principle of centrifugal separation for wastewater treatment is to use centrifugal force to rapidly rotate and separate suspended particles from the wastewater. If the suspended particles in the wastewater are rapidly rotating, the larger solid particles will be thrown to the periphery during the rotation process, while the smaller particles will be left in the outer ring, with the purpose of separating the wastewater and suspended particles. However, it should be emphasized that there is a significant density difference between oil and water in wastewater, which can be separated by a centrifuge to achieve preliminary purification of the wastewater.

(2) Membrane separation

In recent years, the rapid development of sewage treatment technology has also led to the emergence of new technologies, and membrane separation is a new type of sewage treatment technology. Related studies have found that membrane separation technology is widely used in various fields of wastewater treatment, with a good development trend and significant social value. The characteristic of this technology is that it does not require the use of any other additives and only achieves separation through physical principles.

It can adapt well to changes in oil concentration in raw water and will not cause secondary pollution to the water due to other impurities. The advantages of this technology are mainly reflected in the aspects of sewage odor and color, and most importantly, it further stabilizes the water body by reducing the microbial content in the sewage. However, membrane separation technology has higher process requirements compared to other technologies in the application process. The application of this treatment method requires regular cleaning and sterilization of the mold under a certain pressure environment.

2. Chemical methods

In general, chemical flocculation is often combined with air flotation as a pretreatment technology to treat oilfield wastewater, and is one of the commonly used chemical treatment methods in various oilfields. The flocculants commonly used in this process include organic flocculants, inorganic flocculants, and composite flocculants. In recent years, there have been many applications and studies of organic polymer flocculants in oilfield wastewater treatment, and they have developed rapidly [6-8]. The reason for this is that organic polymer flocculants have the advantages of producing less sludge, high efficiency, low dosage, and fast treatment speed.

Hydrolysis acidification method refers to the process of using hydrolytic bacteria to break or open the chain to transform difficult to degrade large molecular organic substances into easily biodegradable small molecular substances, thereby reducing the load of subsequent treatment and improving the biodegradability of oilfield wastewater treatment. This method is often combined with biochemical methods to form a process of hydrolysis acidification biochemical treatment.

Chemical oxidation method refers to the conversion of dissolved inorganic and organic substances in petroleum wastewater into less toxic or non-toxic substances through chemical oxidants under the action of catalysts, so that they exist in a form that is easy to separate from water, improving the biodegradability of petroleum wastewater. Catalytic oxidation, UV/H2O2 oxidation, and UV/O3 oxidation are common chemical oxidation methods. As a preprocessing method, it is often used in conjunction with other methods.

3. Coagulation treatment

The coagulation oil removal method uses coagulants to break down colloidal solids and remove colloidal solids and emulsified oil. In wastewater treatment, in order to treat dispersed oil, dissolved oil, and emulsified oil in oilfield wastewater, coagulation sedimentation method is usually used for removal. During the treatment process, suspended solids and mud can be removed. The main principle of coagulation treatment is to use physical or chemical methods to increase the separation speed of various impurities in sewage and accelerate their sedimentation.

The three common coagulation effects of coagulants on colloidal particles in water are electrostatic neutralization, adsorption bridging, and mesh sweeping. According to the different types of coagulants, or their colloidal properties and dosage, their coagulation effects can be classified into primary and secondary. With the continuous use of composite coagulants and inorganic polymer coagulants, their purification effect in oilfield wastewater treatment is getting better and better, and adding a certain dose of chemicals can greatly reduce investment costs and improve treatment efficiency.

4. Enhanced Microbial Technology

The immobilized microbial sewage treatment technology is particularly suitable for the expansion and technological transformation of existing old chemical enterprise sewage treatment plants. For old chemical enterprise sewage treatment plants with insufficient treatment capacity and substandard treated effluent, this technology can be applied for expansion and technological transformation without the need for basic infrastructure construction. Only the existing biochemical tank or treatment water tank needs to be transformed into a 3T-IB immobilized microbial anaerobic filter (3T-AF) or a 3T-IB immobilized microbial aerated biological filter (3T-BAF). Depending on the water quality, 3T-IB high-efficiency dedicated biological carriers can be loaded into the tank and 3T-B high-efficiency dedicated microorganisms can be added, which can increase the treatment water volume by more than twice, improve the treatment water quality, reduce operating costs, and ensure standard discharge. The 3T-IB immobilized microbial wastewater treatment technology is the simplest, most economical, and most effective advanced technology for expanding and improving the treatment water quality of existing old chemical enterprise wastewater treatment plants. It can greatly save renovation investment costs and achieve the best renovation results.

5. Acoustic, microwave, and ultrasonic dehydration techniques

Sound waves can accelerate sweat aggregation and improve the efficiency of crude oil dehydration; Ultrasonic waves can reduce energy consumption and decrease the amount of demulsifier used; The stability of microwave in emulsion drops, but it is also low to heat the lotion, further promoting the coalescence of water droplets, which has a good application prospect in solving the problem of deep dehydration of crude oil with complex properties caused by old oilfields in eastern China.

Microwave refers to electromagnetic waves with frequencies ranging from 300MHz to 300GHz. Microwave water treatment technology is a new type of water treatment technology that utilizes the strong catalytic effect of physical and chemical reactions between single-phase flow and phase current in the microwave field, as well as the ability to selectively generate energy and kill microorganisms through action.

Ultrasonic waves are high-frequency mechanical waves with a frequency of generally 2 × 104-5x108 Hz, with strong concentration and penetration between energy sources. Ultrasonic waves can cause condensation and cavitation in water. When ultrasound is applied to a solution containing wastewater, it causes small oil droplets to vibrate together with water. However, due to the different relative vibration velocities generated by particles of different sizes, oil droplets will collide with each other, resulting in an increase in the volume of adhesive and oil droplets.

Then, due to the large size of the particles, there is only random motion. The concentration and separation of small and medium-sized water and oil droplets, as well as oil-water separation, have good effects. Ultrasonic treatment of emulsified oily wastewater must first determine the most beautiful sound wave frequency through experiments, or there may be ultrasonic grinding effects that affect the treatment effect. At present, scholars at home and abroad have used ultrasonic technology to drop dozens of pollutants in solution water. However, the research object is a single component simulation system, and actual wastewater usually contains multiple pollutants. Therefore, further research is needed on how ultrasonic technology can be applied in actual wastewater treatment and comfort.

In addition, current research on the use of ultrasonic technology to degrade pollutants mostly belongs to the laboratory stage. Due to the insufficient understanding of the degradation mechanism, reaction kinetics, and reactor design of sonochemical reactions, it is currently difficult to achieve engineering.

In general, the treatment methods used are determined based on the different components of wastewater. Currently, the main treatment methods used are chemical treatment, physical treatment, and biological treatment, and are gradually developing towards the integration of these three technologies. Reasonable treatment of chemical wastewater can effectively alleviate water pollution problems and bring certain comprehensive benefits to enterprises.

Precautions for selecting chemical wastewater treatment equipment:

1. Chemical wastewater treatment level: The wastewater quality is usually relatively stable, and general treatment methods include acidification, aerobic biological treatment, disinfection, etc. The reasonable selection of process flow for sewage treatment equipment should be based on specific water quality conditions. It is particularly important to note that when using aerobic biological treatment technology to treat wastewater, attention should be paid to the biodegradability of the wastewater. Usually, COD/BOD5>0.3 is required. If this requirement cannot be met, anaerobic biological hydrolysis acidification can be considered to improve the biodegradability of the wastewater, or non biological physical or chemical treatment methods can be considered.

2. Difficulty level of chemical engineering construction: The difficulty level of engineering construction is also one of the influencing factors in choosing the process flow of sewage treatment equipment. If the groundwater level is high and the geological conditions are poor, it is not suitable to use deep and difficult to construct treatment structures.

3. Construction and operation costs: Considering the construction and operation costs of sewage treatment equipment, the premise should be that the treated water meets the water quality standards. Under this premise, the low cost process of engineering construction and operation should be given due attention. In addition, reducing the footprint is also an important measure to lower construction costs.