Slaughtering and internal processing wastewater process
For biodegradable organic wastewater, biological treatment is one of the effective and economical treatment methods of Zui, and it is also the common main process of meat processing wastewater treatment. Can be divided into two parts: pre-treatment and biochemical treatment; Process Description: Pretreatment process: mechanical grille Provided two water inlet grille artificial slag, and each grid are provided two mutually alternate in order to remove the larger floating waste, reduce the load on the subsequent processing unit. The rotary grille decontamination machine has a grid gap of 3 mm , a water depth of 1 m in front of the grid, a grid inclination of 75 ° and a grid width of 0.8 m . Power 1.5 kW . The rotary grille decontamination machine is assembled into a set of rotary grille chains by a unique caries factory. Driven by the motor reducer, the chain of teeth rotates in the direction of reverse water flow. When the crowbar chain runs to the upper part of the equipment, due to the guiding of the sheave and the curved rail, a relative self-cleaning motion is generated between each set of molars, and most of the solid matter falls by gravity. The other part relies on the reverse movement of the cleaner to clean the debris sticking to the molars. Pre-aeration conditioning tank: The quality and quantity of wastewater in the slaughtering and processing wastewater vary greatly in different time periods. In order to make the subsequent biochemical treatment system operate smoothly and smoothly, the regulating pool is set to control the fluctuation of water quantity and water quality. The adjustment tank size is 23.7m × 17 m , the effective water depth is 7 m , the effective volume is 2 700 m3 , and the hydraulic retention time is 9 h . The tank is equipped with aeration equipment to provide agitation and pre-aeration to prevent odors in the summer pool. Biochemical treatment process: Contact oxidation pool: After the wastewater is treated by UASB , BOD5 and COD have been greatly reduced, but the discharge standard is not reached. The BOD5 and COD in the raw water are further degraded in the contact oxidation zone , and the ammonia nitrogen in the wastewater is removed. Design of a contact oxidation tank, the grid is divided into four, the effective volume of 3 695 m3, flow rate of 300 m3 / h, the residence time of 17.8 h, using a combination of fillers pool 2 145 m3, Φ 150 mm × 80 mm, microporous disc diffuser Pool 2 530 , Φ 260 mm , processing capacity 2.5 m3 / h . Among them, the combination of soft and semi-soft fillers is an ideal product in the biochemical treatment of sewage. The utility model has a plastic ring as a skeleton, is loaded with a vinylon wire, and the vinylon wire is fastened on the plastic ring, and the tow is uniformly distributed in the sewage, the film is easily formed, the film is changed, and the adaptability to the sewage concentrated liquid is good, and the utilization of oxygen is utilized. The rate is high. The microporous aerator has a small aeration bubble diameter, a small gas-liquid interface diameter, a large gas-liquid boundary area, uniform bubble diffusion, no clogging of the pores, and strong corrosion resistance. Sludge dewatering: The sludge of this project is selected by the plate-and-frame filter press to dewater the sludge. The quantity is 1 set, the production capacity is 40 ~ 60 m3 / h , and the PAM flocculant is added to the sludge before dewatering to improve the sludge dewatering performance. Green 烨 environmental protection frame filter press generally consists of the head plate, tail plate, filter plate, hydraulic cylinder, main beam, transmission and pulling device. The hydraulic cylinder piston pushes the head plate, so that the filter plate presses the adjacent filter plate to form a filter chamber; the mud pump sends the mud into the filter chamber, the water permeable filter cloth is discharged through the liquid discharge port, and the solid mud forms a filter cake in the filter chamber. When the mud filter chamber is filled with a high-pressure pump continues to pressure filtration of the slurry, solid-liquid separation in the filter chamber. Guangzhou Luyi Environmental Protection Equipment Co., Ltd.
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