化学除油器是综合了斜管沉淀器及机械澄清池的优点的一种高效节能的降浊除油设备，已广泛用于钢铁、石化、石油行业含油废水处理。连铸污水中主要含有氧化铁皮和少量油脂，连铸污水处理系统常用化学除油器用于去除水中的氧化铁皮悬浮物和油脂。The chemical degreaser is a high-efficiency and energy-saving turbidity reduction and oil removal equipment that combines the advantages of inclined tube settlers and mechanical clarifiers. It has been widely used in the treatment of oily wastewater in the steel, petrochemical, and petroleum industries. The continuous casting sewage mainly contains iron oxide scale and a small amount of grease. The chemical degreasing device is commonly used in the continuous casting sewage treatment system to remove the suspended iron oxide scale and grease in the water.

    化学除油器构造及工作原理

化学除油器是采用三合一技术理论而设计的，加有凝聚剂的原水经管道混合器混合后，进入三角形环形槽，同时环形槽中加油絮凝剂，然后由槽底配水孔流入第一反应室，在第一反应室与清水分离后回流的水流混合（回流量为进水量的3.5倍，回流量可以通过调节机构来控制），混合后的水通过叶轮提升至第二反应室。The chemical degreaser is designed using the theory of three-in-one technology. The raw water with coagulant is mixed by the pipeline mixer and enters the triangular annular groove. At the same time, the oil flocculant is added to the annular groove, and then flows into the first through the water distribution hole at the bottom of the groove In the reaction chamber, the refluxed water after the first reaction chamber is separated from the clean water is mixed (the reflux is 3.5 times of the inlet water, and the reflux can be controlled by an adjusting mechanism), and the mixed water is promoted to the second reaction chamber through the impeller.

再沿伞形罩进入斜管区分离，清水上升由集水槽流出设备外，回流水由回流 缝回到第一反应室，池底排泥管定期排泥。 池顶安装有搅拌机，起搅拌及提升作用。搅拌 机为摆线针轮减速机，再经大小齿轮减速，带动搅拌轴，搅拌轴顶设有手动叶轮升降机构，能调节搅 拌轴上叶轮出水口大小，从而调整回流水量。Then it enters the inclined pipe area along the umbrella-shaped hood and separates. The clear water rises and flows out of the equipment from the sump, and the return water returns to the first reaction chamber through the return seam. The mud drain pipe at the bottom of the pool is regularly drained. A mixer is installed on the top of the pool for mixing and lifting. The mixer is a cycloidal pinwheel reducer, which is decelerated by large and small gears to drive the mixing shaft. The top of the mixing shaft is equipped with a manual impeller lifting mechanism, which can adjust the size of the impeller water outlet on the mixing shaft to adjust the return water volume.

    针对第二反应室内积泥问题，采取了如下改造 措施。将油絮凝剂直接向下伸至第一反应室，从而 使大颗粒污泥沉积于第一反应室内的污泥斗内。在 第二反应室中沉降的是小颗粒污泥，对第二反应室 和搅拌机运行的影响便可大为减弱。In response to the problem of mud accumulation in the second reaction chamber, the following renovation measures were taken. Extend the oil flocculant directly down to the first reaction chamber, so that large particles of sludge are deposited in the sludge hopper in the first reaction chamber. The small particles of sludge settled in the second reaction chamber, and the influence on the operation of the second reaction chamber and the mixer can be greatly reduced.

化学除油器出水问题
    对于化学除油器的出水的问题，可在其出水立管内插入一跟排气管，用以释放随水流中的空气，破坏气水混合流，则可以提高出水流速，出水管中央的旋涡也可基本不见。排气管插入出水立管的深 度根据现场实际试验确定，以破坏出水旋涡为准，管径可取ＤＮ８０。实际应用后，确实起到了效果，并且在排气管顶有类似小喷泉的现象。For the problem of the water output of the chemical degreaser, an exhaust pipe can be inserted into the water outlet riser to release the air in the water flow and destroy the air-water mixed flow, which can increase the water flow rate and the vortex in the center of the water outlet pipe. But basically missing. The depth of the exhaust pipe inserted into the water outlet riser is determined according to the actual field test, and is subject to the destruction of the water outlet vortex. The pipe diameter can be DN80. After actual application, the effect is indeed achieved, and there is a phenomenon similar to a small fountain on the top of the exhaust pipe.

泥斗排泥管积泥问题
    对于泥斗排泥管积泥问题。主要的技术措施是在排泥管上电动排泥电动阀前（电动排泥阀与泥斗之间）的管道上外接一路冲洗水源。冲洗水源可为厂区工业水或回用水，供水的水压应在0.2Mpa以上。对于泥斗排泥管，定期采用冲洗水源进行冲洗，从 而起到疏通淤堵的问题。For the problem of sludge accumulation in the hopper pipe. The main technical measure is to connect a flushing water source to the pipeline before the electric mud discharge valve on the mud discharge pipe (between the electric mud valve and the mud bucket). The flushing water source can be industrial water or reused water in the factory, and the water pressure of the water supply should be above 0.2Mpa. For the sludge discharge pipe of the hopper, the flushing water source is used for flushing on a regular basis, so as to dredge the clogging problem.

排泥方式问题

    化学除油器底部污泥斗排泥管上取消电动蝶阀，改为采用电动闸阀或球阀、截止阀等其他便于 调节流量的阀门，阀门的电动执行器采用调节型。每次排泥周期按如下程序控制：全开阀门10ｓ左右，再将阀门处于1/2开度10s左右，最后将阀门关闭。按此实施后，原先化学除油器开关型的排泥方式转 变为调节型的排泥方式。采取该技术措施后，可以有效提高化学除油器排泥含固率，同时减少化学除油器排泥时耗水量。 The electric butterfly valve is removed from the sludge discharge pipe of the sludge bucket at the bottom of the chemical degreaser, and the electric gate valve or ball valve, stop valve and other valves that are convenient to adjust the flow are adopted instead. The electric actuator of the valve adopts the regulating type. Each mud discharge cycle is controlled according to the following procedure: fully open the valve for about 10 seconds, then place the valve at 1/2 opening for about 10 seconds, and finally close the valve. After this is implemented, the original switch-type sludge discharge method of the chemical degreaser has been changed to a regulated sludge discharge method. After adopting this technical measure, the solid content of the sludge discharged by the chemical degreaser can be effectively increased, and the water consumption of the sludge discharged by the chemical degreaser can be reduced at the same time.