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on October 29, 2018, the experimental group was composed of general manager of Xingye, director of production plant and leaders and experts of relevant environmental protection departments. The acceptance and acceptance of Guigang emerging paper industry wastewater oxidation project constructed by Beijing Luheng Science and Technology Co., Ltd. was completed. The acceptance team and experts inspected the operation of sewage treatment equipment, effluent effect and project quality on the spot. At the same time, they approved the relevant technical data, consulted the acceptance monitoring report, confirmed that the effluent indicators met the requirements of national discharge standards, and unanimously agreed on the project nature. It can test and meet the requirements of Engineering quality. Acceptance and acceptance requirements for full completion of the project to a higher level of acceptance and acceptance.  

Construction background
Guigang Xingxin Paper Co., Ltd. is one of the largest recycled paper enterprises in Guangxi. It uses waste paper as raw material to produce corrugated paper with an annual output of about 150,000 tons. With the increasingly stringent environmental protection requirements, the original sewage treatment process and facilities can not meet the environmental protection requirements. Therefore, the owners consider the construction of an efficient anaerobic treatment system. The LOC external circulation high efficiency anaerobic reactor independently developed by Luheng Company is an anaerobic reactor specially designed for high concentration wastewater produced in papermaking, chemical industry and food industry. It has the characteristics of high COD removal efficiency, stable performance, small occupation area and strong impact load resistance. After many technical exchanges and communication with the owners, the technical scheme provided by Lvheng has been fully recognized by the owners. Eventually, Lvheng Technology is entrusted with the overall package of process and equipment for the anaerobic system and pre-precipitation system of the wastewater station, and is responsible for the design of process system, the processing, production, installation and commissioning of process equipment and auxiliary equipment until the effluent reaches the standard stably.

处理效果
The project started construction in May, 2018. After more than five months of construction and system debugging, the project has been running steadily and the effluent quality has reached the discharge standard of paper industry.

建成意义
The completion and operation of the project fundamentally solved the problem of stable discharge of paper-making wastewater from Xingxin Paper Industry and effectively improved the ecological environment. At the same time, on the basis of the original treatment process, the additional pre-precipitation system reduced the original chemical dosage of the owner. The operation of the anaerobic system provided stable water quality and quantity for the subsequent aerobic treatment and ensured the whole sewage area. The stable operation and standard of the management system. Biogas and granular sludge produced by anaerobic system have certain economic value. The construction of the project not only saves the cost of sewage treatment operation for the owners, but also brings remarkable social and economic benefits.
Brief Introduction of Technology-LOC External Circulation Anaerobic Reactor of Greenhouse Technology
LOC anaerobic reactor is developed on the basis of traditional UASB reactor and EGSB anaerobic reactor. The core of LOC anaerobic reactor is based on a specially designed water distribution and three-phase separation module, which realizes the highly turbulent state of wastewater in the reactor, promotes the full contact between wastewater and anaerobic microorganisms, improves the efficiency of anaerobic mass transfer reaction, and effectively intercepts biological carriers to ensure that the reactor is always in the interior. In a state of high efficiency and benign circulation, the pollutants in water are degraded by a large margin, and the by-product biogas can be used as energy.

Technical characteristics
1.Vertical structure, covering an area of provincial, generally 12-20 meters in height;
2.High organic load, short hydraulic residence time, maximum volume load up to 20 kg COD/(m.d)；
3.Low upwelling speed and energy saving (upwelling speed is controlled at 2-4 m/h without excessive reflux)；
4.Strong shock resistance and toxicity tolerance, it is widely used in various industrial wastewater treatment.；
5.The special design of three-phase separator can fully promote the growth of microorganisms and increase the biogas yield (gas yield can reach 0.4 m/kg COD)；
6.No internal running parts, no maintenance, long service life。