1. Project context
With the increasing of global environmental awareness, the demand for sewage treatment equipment in the international market is increasing. With its advanced technology and rich experience in the field of sewage treatment, ZhongQiaoqi successfully exported a set of food sewage treatment equipment to Russia, which treats 50 tons of food wastewater per hour, and the effluent quality meets the local discharge standards.
2. Equipment composition
The set of equipment includes inclined pipe sedimentation tank and filter equipment, through the integration of a variety of sewage treatment units, to achieve the high efficiency, energy saving, environmental protection of sewage treatment. The inclined tube sedimentation tank is separated by gravity, which improves the treatment efficiency by increasing the precipitation area. The filter equipment further removes the suspended matter and impurities in the water to ensure the water quality.
3. Equipment advantage
(1) Efficient treatment
The equipment adopts advanced biological treatment technology and physical and chemical treatment methods, which can efficiently degrade and remove the organic matter, suspended matter, heavy metal ions and other harmful substances in sewage, and the treatment effect is stable and reliable. The efficient solid-liquid separation technology of the inclined tube sedimentation tank reduces the particle settlement distance and reduces the precipitation time, which improves the processing capacity of the sedimentation tank.
(2) Compact structure
Integrated sewage treatment equipment integrates multiple treatment units in one equipment, compact structure, small area, easy to transport and installation. This gives the device a significant advantage in areas with tight land resources.
(3) High degree of automation
The equipment is equipped with an automatic control system, which can realize unattended and remote monitoring. Each equipment has undergone strict factory inspection, with low failure rate and maintenance free.
(4) Strong corrosion resistance
The shell is made of carbon steel, stainless steel or glass steel, and the carbon steel is made of epoxy coal asphalt paint. The equipment is equipped with reinforcement, buried depth can reach more than 2 meters, can also be used on the ground.
(5)Evenly uniform water
Each warehouse of the equipment is equipped with a water distribution system, water flow without short circuit phenomenon, the utilization rate of the pool can reach 89.8%, 15% -30% more than the no water distribution system or conventional water distribution.
(6) High oxygen transmission efficiency
Using special microporous aeration device, no blockage phenomenon, can fully mix sewage with activated sludge and dissolved oxygen, which can greatly improve the transfer efficiency of oxygen transfer and the biochemical activity of sludge.
(7) Biological affinity combination packing
The equipment is filled with functional biological affinity combination filler, rapid hanging film, rapid microbial growth, high activity, so the effluent quality is good.
4. MBR technology
MBR (Membrane bioreactor) process is a sewage treatment process that combines membrane separation technology with biological treatment technology. The process has the following main features:
(1) High-efficiency solid-liquid separation
MBR process can effectively carry out solid-liquid separation, its separation effect is much better than the traditional sedimentation tank, the effluent quality is good, the effluent suspended matter and turbidity are close to zero, can be directly reused, realizing the sewage resources.
(2) Microbial interception
The efficient interception of the membrane makes the microorganisms completely trapped in the bioreactor, realizing the complete separation of the reactor hydraulic residence time (HRT) and sludge age (SRT), and flexible and stable operation control.
(3) Reduce the floor area
Because MBR combines the aeration tank of the traditional sewage treatment with the secondary sedimentation tank into one and replaces all the process facilities of the tertiary treatment, the footprint can be greatly reduced and the civil engineering investment can be saved.
(4) High nitrification efficiency
The MBR process is conducive to the interception and reproduction of nitrification bacteria, and the system nitrification efficiency is high. Deamination and phosphorus removal can also be used through the change of operation mode.
(5) Low sludge yield
Because the mud age can be very long, the degradation efficiency of refractory organic matter is greatly improved. The reactor operates under high volume load, low sludge load and long mud age, and the residual sludge production is very low, theoretically realizing zero sludge discharge.
(6) Automatic control
The system implements PLC control and convenient operation and management.
5. Water quality
After the equipment treatment, the effluent water quality meets the local discharge standard in Russia. The specific indicators are shown as follows:
Chemical oxygen demand (COD): 50 mg/L
Biochemical oxygen demand (BOD): 10 mg/L
Suspension matter (SS): 10 mg/L
Animal and plant oil: 1 mg/L
The food and sewage treatment equipment exported to Russia, with its efficient, compact, multi-functional characteristics, has become an ideal choice to solve various sewage treatment problems. The equipment can not only effectively remove the harmful substances in the sewage, to ensure that the effluent quality meets the discharge standard, but also has the advantages of high degree of automation, strong corrosion resistance, uniform water distribution, high oxygen transmission efficiency and biological affinity combination packing. The introduction of MBR process further improves the treatment efficiency and effluent quality of the equipment, while reducing the floor area and sludge production. These advantages make the device widely recognized and used in the Russian market, making an important contribution to the local environmental protection and sustainable development.
