Poultry slaughtering wastewater treatment equipment for chickens, ducks, and poultry

Zhengyuan Environmental Protection is a professional manufacturer of slaughter wastewater treatment equipment, providing you with integrated large, medium, and small wastewater treatment equipment that can be applied to the treatment of poultry slaughter wastewater such as chicken wastewater, duck (goose) wastewater, rabbit wastewater, pig wastewater, cattle wastewater, and sheep wastewater. The latest sewage treatment technology in 2020, factory direct prices, support for customized production, installation and commissioning services.

The price of sewage treatment equipment for chicken, duck and poultry slaughtering starts at 10000 yuan. The specific quotation needs to be determined based on the water output. You can consult our manufacturer's customer service.

Specifications for sewage treatment equipment for chicken, duck, and poultry slaughter: Large, medium, and small sewage treatment equipment can be customized and produced according to our water output requirements of 1-50 tons.

Characteristics of slaughter wastewater from chickens, ducks, and poultry:

Characteristics of chicken, duck, and poultry wastewater: high organic matter concentration, high suspended solids, deep color, high NH3-N concentration due to the presence of a large amount of animal feces, and a large number of pathogenic bacteria. The pollutants in sewage mainly exist in the form of solid and dissolved carbohydrates, which cause the sewage to exhibit high BOD5, CODcr, SS, and chromaticity. At the same time, the sewage has good biodegradability and contains a large amount of nutrients such as N and P. Due to the fact that the solid residue in sewage is mainly organic matter, it is necessary to strengthen pretreatment, perform solid-liquid separation, and reduce the subsequent treatment load.

Characteristics of chicken, duck and poultry wastewater treatment equipment:

1. The JQ-YZ-YZ integrated aquaculture wastewater treatment equipment is made of carbon steel anti-corrosion treatment or assembled with stainless steel components, which is lightweight, easy to transport, and convenient to install;

2. The anti-corrosion structure of glass fiber reinforced plastic, carbon steel and stainless steel is adopted, which has excellent characteristics such as corrosion resistance and aging resistance, with a service life of up to 15 years;

3. Save land, no need to build houses or provide heating and insulation. Maximized device integration and reduced footprint;

4. No pollution, no odor, reducing secondary pollution;

5. Unrestricted by sewage volume, flexible and adaptable, can be used individually or in combination with multiple.

6. The entire equipment processing device is equipped with PLC automatic electrical control equipment and equipment fault alarm equipment, which operates safely and reliably. Generally, there is no need for dedicated personnel to manage it, and only timely maintenance and upkeep of the equipment are required, with low management costs.

Process flow of sewage treatment equipment for chicken, duck and poultry slaughter:

1. Air flotation and sedimentation

Air flotation and sedimentation tank is a commonly used solid-liquid separation equipment in the sewage treatment industry, which can effectively remove suspended solids, oil, and gel substances in sewage and is the main process of sewage pretreatment. Dissolved air flotation technology has been widely used in water supply, drainage, and wastewater treatment in recent years. It can effectively remove light flocs that are difficult to precipitate in wastewater.

The wastewater discharged from aquaculture farms contains a large amount of manure and suspended solids, which is the main reason for the high CODcr and ammonia nitrogen in aquaculture wastewater. The large amount of suspended solids also has a significant impact on subsequent biochemical treatment. Therefore, the focus of aquaculture wastewater treatment is on the treatment of suspended solids. Based on our company's actual experience in aquaculture wastewater treatment, the pre-treatment adopts a process of regulating tank+air flotation primary sedimentation tank. By adding flocculants to the wastewater, the suspended solids in the wastewater can be removed, which can effectively reduce the workload of subsequent biochemical treatment and provide good conditions for subsequent treatment processes.

2. Hydrolysis acidification method

Hydrolytic acidification is mainly used in wastewater treatment processes with high organic matter concentration and high SS, and is a relatively important process. When organic matter in water has complex structures, hydrolytic acidification bacteria use H+and - OH ionized by H2O to open C-C in organic molecules. By adding H+at one end and - OH at the other end, long chains can be hydrolyzed into short chains, branched chains into straight chains, and cyclic structures into straight or branched chains, improving the biodegradability of wastewater. When SS is high in water, hydrolytic bacteria capture it through the extracellular mucosa, hydrolyze it into molecular fragments with external enzymes, and then enter the intracellular metabolism. Incomplete metabolism can turn SS into soluble organic matter, and the effluent becomes clear. During this process, hydrolytic bacteria utilize the covalent bond energy in organic matter that breaks bonds through hydrolysis to complete the activity of life. The principle of hydrolysis and acidification is to efficiently decompose organic matter that is difficult to degrade under aerobic conditions by facultative hydrolysis and acidification microorganisms. By increasing the B/C of wastewater, it facilitates the efficient operation of subsequent aerobic biological treatment. Hydrolytic acidification eliminates the methane production stage in anaerobic digestion, which requires strict environmental conditions and slow microbial proliferation. Greatly reducing the volume of anaerobic treatment equipment while eliminating the need for gas recovery and utilization systems.

The hydrolysis acidification reactor is not strictly an anaerobic reactor. Considering the dissolved oxygen concentration that needs to be maintained in the reactor, it can only be used as a type of facultative reactor and is not strictly an anaerobic environment. Therefore, it has little or no participation in the methane production process, and is usually only used as a system to improve biodegradability before the aerobic reactor, which can effectively improve the treatment efficiency of the aerobic reactor.

The hydrolysis process utilizes the hydrolysis and acidification stages of anaerobic treatment, while abandoning the methane production (alkaline fermentation) stage. The main purpose of hydrolysis treatment is to achieve the transformation of difficult to biodegrade organic matter through hydrolysis and non hydrolysis. By changing the molecular structure (ring opening, bond breaking, cracking, group substitution, reduction, etc.), complex and difficult to biodegrade organic matter molecules are transformed into slowly or rapidly biodegradable organic matter, thereby significantly improving the biodegradability and decolorization effect of wastewater, and ultimately including difficult to biodegrade organic matter (groups or chemical bonds in molecular structures) as electron acceptors. To stabilize the effluent quality, reduce the impact load, and create conditions for aerobic treatment, this process can effectively solve the problem of suspended solids (SS). On the other hand, the characteristic is that all or part of the remaining sludge generated in the aerobic section is refluxed to the anaerobic section. Due to the sufficient biological solid retention time (SRT) in the anaerobic section, the sludge can undergo thorough anaerobic digestion in the anaerobic section, so that the remaining sludge is completely decomposed into H2O and CO2 in the circulation process, and the entire system reaches its own sludge balance, with less or no sludge discharge, effectively solving the problem of wastewater sludge and also playing a role in biological denitrification.

3. Contact oxidation method

Biological contact oxidation method is a type of biofilm method, consisting of a tank body, packing material, and aeration system. Microorganisms such as bacteria, fungi, and post protozoa grow and reproduce on packing carriers. Microorganisms take up organic matter in wastewater as nutrients, adsorb and decompose it, and continuously metabolize and maintain activity, thus purifying the wastewater. In the presence of sufficient dissolved oxygen and food, microbial reproduction is very rapid, and the biofilm gradually thickens. Dissolved oxygen and organic matter in sewage are utilized by microorganisms through diffusion. When the biofilm reaches a certain thickness, oxygen cannot diffuse into the interior of the biofilm, aerobic bacteria die, and facultative bacteria and anaerobic bacteria begin to multiply in large numbers, forming an anaerobic layer. The dead aerobic bacteria are used as a substrate, and anaerobic bacteria continue to grow on this basis. After a period of time, the number begins to decrease, and coupled with the escape of metabolic gases, large pieces of biofilm fall off. On the surface of the detached biofilm, new biofilm develops again. In the contact oxidation tank, due to the large surface area of the filler, every stage of biofilm development exists, stabilizing the ability to remove organic matter at a high level. The BOD removal rate is generally between 80% and 90%.

The advantages of this process are stable operation and reliable treatment effect. High volume load and short processing time. Low power consumption, simple operation of the treatment system, convenient maintenance and management, and low sludge production.

4 Ozone oxidation process

The ozone generated by the ozone generator is diffused into the water to be treated through gas water contact equipment, usually using microporous diffusers, bubble towers or injectors, turbine mixers, etc. The utilization rate of ozone should strive to reach over 90%, and the remaining ozone should be discharged with the exhaust gas. To avoid air pollution, the exhaust gas can be catalytically decomposed using activated carbon or Hoggart agent, or catalytic combustion can be used to decompose ozone. The ozone oxidation technology has the following characteristics:

① Ozone, due to its strong oxidizing ability, can remove substances that are difficult to remove by other water treatment processes;

② The reaction rate of ozone oxidation is fast, which can reduce the volume of reaction equipment or structures;

③ The remaining ozone will quickly convert into oxygen, which not only does not produce secondary pollution, but also increases dissolved oxygen in water;

④ While sterilizing and killing viruses, it can also eliminate odors and odors;

⑤ Odorization helps with flocculation and can improve sedimentation efficiency.

3.2.4 Discount point chlorination process

Wastewater contains ammonia and various organic nitrogen compounds, and most wastewater treatment plant discharges contain a considerable amount of nitrogen. If the nitrification stage is completed in the secondary treatment, nitrogen usually exists in the form of ammonia or nitrate. After adding chlorine or sodium hypochlorite, hypochlorous acid easily reacts with ammonia in wastewater, forming three types of chloramines in sequence during the reaction:

NH3+HOCl → NH2Cl (monochloramine)+H2O

NH2Cl+HOCl → NHCl2 (dichloroamine)+H2O

NHCl2+HOCl → NCl3 (nitrogen trichloride)+H2O

The above reaction is related to pH value, temperature, and contact time, as well as the initial ratio of ammonia to chlorine. In most cases, it is mainly in the form of monochloramine and dichloroamine. The chlorine in it is called effective compound chlorine.

In the study of adding chlorine to ammonia water, it was found that when the chlorine dosage reached a molar ratio of chlorine to ammonia of 1:1, the residual chlorine increased. When the molar ratio reached 115:1 (mass ratio 716:1), the residual chlorine decreased to the lowest point, which is the "inflection point". At the inflection point, almost all oxidizing chlorine is reduced, all ammonia is oxidized, and further chlorination produces free residual chlorine. In wastewater treatment, the amount of chlorine required to reach the inflection point always exceeds a mass ratio of 7.6:1. As the pre-treatment level of wastewater increases, the amount of chlorine required to reach the inflection point decreases.

Due to the large amount of chlorine added and high cost, the breakpoint chlorination method is generally not used as the main process in denitrification. Therefore, this process is used at the end of sewage treatment to control the concentration of ammonia nitrogen in the effluent, and together with ozone, it can also kill bacteria and viruses, ensuring that the effluent ammonia nitrogen and coliform bacteria meet the standards.

According to the analysis of the appeal, the integrated aquaculture wastewater treatment equipment adopts the main treatment process of "air flotation sedimentation+hydrolysis acidification+two-stage contact oxidation+ozone disinfection".

When doing sewage treatment, sewage treatment equipment is basically used, and chicken farm sewage treatment naturally also uses chicken farm sewage treatment equipment. Zhengyuan Environmental Protection is at the forefront of equipment research in China and can also do chicken farm sewage treatment projects. Enterprises interested in project cooperation can come to us for cooperation, let's make a contribution to the environmental protection cause together.